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1

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

2

Advanced technology development multi-color holography  

NASA Technical Reports Server (NTRS)

Several key aspects of multi-color holography and some non-conventional ways to study the holographic reconstructions are considered. The error analysis of three-color holography is considered in detail with particular example of a typical triglycine sulfate crystal growth situation. For the numerical analysis of the fringe patterns, a new algorithm is introduced with experimental verification using sugar-water solution. The role of the phase difference among component holograms is also critically considered with examples of several two- and three-color situations. The status of experimentation on two-color holography and fabrication of a small breadboard system is also reported. Finally, some successful demonstrations of unconventional ways to study holographic reconstructions are described. These methods are deflectometry and confocal optical processing using some Spacelab III holograms.

Vikram, Chandra S.

1994-01-01

3

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

4

Pit Distribution Design for Computer-Generated Waveguide Holography  

NASA Astrophysics Data System (ADS)

Multilayered waveguide holography (MWH) is one of a number of page-oriented data multiplexing holographies that will be applied to optical data storage and three-dimensional (3D) moving images. While conventional volumetric holography using photopolymer or photorefractive materials requires page-by-page light exposure for recording, MWH media can be made by employing stamping and laminating technologies that are suitable for mass production. This makes devising an economical mastering technique for replicating holograms a key issue. In this paper, we discuss an approach to pit distribution design that enables us to replace expensive electron beam mastering with economical laser beam mastering. We propose an algorithm that avoids the overlapping of even comparatively large adjacent pits when we employ laser beam mastering. We also compensate for the angular dependence of the diffraction power, which strongly depends on pit shape, by introducing an enhancement profile so that a diffracted image has uniform intensity.

Yagi, Shogo; Imai, Tadayuki; Ueno, Masahiro; Ohtani, Yoshimitsu; Endo, Masahiro; Kurokawa, Yoshiaki; Yoshikawa, Hiroshi; Watanabe, Toshifumi; Fukuda, Makoto

2008-02-01

5

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 ...

Mrs. Thackeray

2007-10-14

6

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

7

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

8

Holography: A survey  

NASA Technical Reports Server (NTRS)

The development of holography and the state of the art in recording and displaying information, microscopy, motion, pictures, and television applications are discussed. In addition to optical holography, information is presented on microwave, acoustic, ultrasonic, and seismic holography. Other subjects include data processing, data storage, pattern recognition, and computer-generated holography. Diagrams of holographic installations are provided. Photographs of typical holographic applications are used to support the theoretical aspects.

Dudley, D. D.

1973-01-01

9

A high-reflective surface measurement method based on conoscopic holography technology  

NASA Astrophysics Data System (ADS)

Measuring high-reflective surfaces using optical method is always a big challenging problem. This paper presents a high-reflective surface measurement method based on conoscopic holography technology using a 4D motion platform equipped with a conoscopic holography optical probe. There are two key problems needed to solve before the automate scan of the complex shape surface: the coordinate calibration and the path planning. To improve the calibration efficiency and accuracy, the coordinate calibration is divided into two parts: the rough calibration and the accurate registration. The path planning consists of two aspects including: the path points generation and the path points verification. In addition, by scanning the objects having high-reflective surfaces, such as the metal blades, coins and other work-pieces, the efficiency of the measurement method has been verified.

Cheng, Xu; Li, ZhongWei; Shi, YuSheng; Zhao, HengShuang; Zhan, Guomin

2014-11-01

10

Digital holography: 30 years later  

Microsoft Academic Search

Digital holography is analysis, synthesis and simulation of wave fields by means of digital computers and processors. Since first publications in digital holography, more than 30 years have passed. From then on, the ideas of digital holography formulated at that time has found quite a number of applications and implementations; but not all of them. Some old dreams such as

Leonid P. Yaroslavsky

2002-01-01

11

Image communication scheme based on dynamic visual cryptography and computer generated holography  

NASA Astrophysics Data System (ADS)

Computer generated holograms are often exploited to implement optical encryption schemes. This paper proposes the integration of dynamic visual cryptography (an optical technique based on the interplay of visual cryptography and time-averaging geometric moiré) with Gerchberg-Saxton algorithm. A stochastic moiré grating is used to embed the secret into a single cover image. The secret can be visually decoded by a naked eye if only the amplitude of harmonic oscillations corresponds to an accurately preselected value. The proposed visual image encryption scheme is based on computer generated holography, optical time-averaging moiré and principles of dynamic visual cryptography. Dynamic visual cryptography is used both for the initial encryption of the secret image and for the final decryption. Phase data of the encrypted image are computed by using Gerchberg-Saxton algorithm. The optical image is decrypted using the computationally reconstructed field of amplitudes.

Palevicius, Paulius; Ragulskis, Minvydas

2015-01-01

12

Computer generated holography using a graphics processing unit  

NASA Astrophysics Data System (ADS)

We have applied the graphics processing unit (GPU) to computer generated holograms (CGH) to overcome the high computational cost of CGH and have compared the speed of a GPU implementation to a standard CPU implementation. The calculation speed of a GPU (GeForce 6600, nVIDIA) was found to be about 47 times faster than that of a personal computer with a Pentium 4 processor. Our system can realize real-time reconstruction of a 64-point 3-D object at video rate using a liquid-crystal display of resolution 800×600.

Masuda, Nobuyuki; Ito, Tomoyoshi; Tanaka, Takashi; Shiraki, Atsushi; Sugie, Takashige

2006-01-01

13

Computer generated holography using a graphics processing unit.  

PubMed

We have applied the graphics processing unit (GPU) to computer generated holograms (CGH) to overcome the high computational cost of CGH and have compared the speed of a GPU implementation to a standard CPU implementation. The calculation speed of a GPU (GeForce 6600, nVIDIA) was found to be about 47 times faster than that of a personal computer with a Pentium 4 processor. Our system can realize real-time reconstruction of a 64-point 3-D object at video rate using a liquid-crystal display of resolution 800x600. PMID:19503377

Masuda, Nobuyuki; Ito, Tomoyoshi; Tanaka, Takashi; Shiraki, Atsushi; Sugie, Takashige

2006-01-23

14

technologies for computer  

E-print Network

information about how Microsoft Research tools and technologies can enhance your computer science research involved in innovative research in these areas? Microsoft Research Connections provides access to toolsTools and technologies for computer scientists who dream the future More information For more

Chaudhuri, Surajit

15

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

16

Holography in string theory  

NASA Astrophysics Data System (ADS)

This thesis presents three aspects of holography, or holographic duality, in string theory. The goal of holography is to describe gravitational theories by field theories in fewer dimensions. Although recently there have been significant strides toward understanding generic holographic dualities between particle theory and gravity, it is not clear how string theory might implement this. In Chapter 2 the role of compact directions in holography is explored. We discover that a generalization of Bousso's prescription is necessary. In this chapter we also discover that holography provides no clear solution to understanding closed timelike curves, unlike earlier speculation. Using holography as a tool, we are able in Chapter 3 to compute the thermal two-point function of the graviton in the dual to a Little String Theory. This is a strongly coupled non-gravitational theory. It exists as a limit of a certain weakly coupled string theory. We find a typical thermal spectrum with no obvious interpretation in terms of particles and bound states. We find evidence supporting a conjecture that this theory is thermodynamically unstable. Finally, in Chapter 4, we investigate the inhomogeneous decay of an unstable D-brane. We study the average number and energy of closed strings emitted during the decay, and confirm that the space-filling D-brane decays completely into lower-dimensional D-branes. One of the long-term goals of this research is to understand how closed-string fluctuations appear in the open-string sector of string theory. This is directly related to the appearance of holography in string theory since gravity appears in the closed-string sector, while the end-points of open strings can be described by field theory.

Deboer, Philip Albert

17

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

Microsoft Academic Search

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,

Masahiro Daibo; Norio Tayama

1998-01-01

18

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

19

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

20

[Earth Science Technology Office's Computational Technologies Project  

NASA Technical Reports Server (NTRS)

This grant supported the effort to characterize the problem domain of the Earth Science Technology Office's Computational Technologies Project, to engage the Beowulf Cluster Computing Community as well as the High Performance Computing Research Community so that we can predict the applicability of said technologies to the scientific community represented by the CT project and formulate long term strategies to provide the computational resources necessary to attain the anticipated scientific objectives of the CT project. Specifically, the goal of the evaluation effort is to use the information gathered over the course of the Round-3 investigations to quantify the trends in scientific expectations, the algorithmic requirements and capabilities of high-performance computers to satisfy this anticipated need.

Fischer, James (Technical Monitor); Merkey, Phillip

2005-01-01

21

Thermodynamic holography  

E-print Network

The holographic principle states that the information about a volume of a system is encoded on the boundary surface of the volume. Holography appears in many branches of physics, such as optics, electromagnetism, many-body physics, quantum gravity, and string theory. Here we show that holography is also an underlying principle in thermodynamics, a most important foundation of physics. The thermodynamics of a system is fully determined by its partition function. We prove that the partition function of a physical system is an analytic function of all the physical parameters, and therefore its values in any area on the complex plane of a physical parameter are uniquely determined by its values along the boundary. The thermodynamic holography has applications in studying thermodynamics of nano-scale systems (such as molecule engines, nano-generators and macromolecules) and provides a new approach to many-body physics.

Bo-Bo Wei; Zhan-Feng Jiang; Ren-Bao Liu

2014-11-24

22

Computer Viruses. Technology Update.  

ERIC Educational Resources Information Center

This document provides general information on computer viruses, how to help protect a computer network from them, measures to take if a computer becomes infected. Highlights include the origins of computer viruses; virus contraction; a description of some common virus types (File Virus, Boot Sector/Partition Table Viruses, Trojan Horses, and…

Ponder, Tim, Comp.; Ropog, Marty, Comp.; Keating, Joseph, Comp.

23

COMPUTERS: EDUCATIONAL TECHNOLOGY PARADOX?  

Microsoft Academic Search

As we move further into the new millennium, the need to involve and adapt learners with new technology have been the main aim of many institutions of higher learning in Malaysia. The involvement of the government in huge technology-based projects like the Multimedia Super Corridor Highway (MSC) and one of its flagships, the Smart Schools have invoked responses to many

Wan Narita Mustapha

24

Computer Technology for Industry.  

ERIC Educational Resources Information Center

A special National Aeronautics and Space Administration (NASA) service is contributing to national productivity by providing industry with reusable, low-cost, government-developed computer programs. Located at the University of Georgia, NASA's Computer Software Management and Information Center (COSMIC) has developed programs for equipment…

Aviation/Space, 1982

1982-01-01

25

Decoding Technology: Computer Shortcuts  

ERIC Educational Resources Information Center

For the typical early childhood administrator, there will never be enough hours in a day to finish the work that needs to be done. This includes numerous hours spent on a computer tracking enrollment, managing the budget, researching curriculum ideas online, and many other administrative tasks. Improving an administrator's computer efficiency can…

Walker, Tim; Donohue, Chip

2008-01-01

26

Information Technology: Computer Systems Engineer  

NSDL National Science Digital Library

Watch how a community college education took one person from being a computer know-nothing to having a career as a successful information technologist, in this video adapted from Pathways to Technology.

WGBH Educational Foundation

2012-05-18

27

Computer Technology and Social Issues.  

ERIC Educational Resources Information Center

Computing involves social issues and political choices. Issues such as privacy, computer crime, gender inequity, disemployment, and electronic democracy versus "Big Brother" are addressed in the context of efforts to develop a national public policy for information technology. A broad range of research and case studies are examined in an attempt…

Garson, G. David

28

Information Technology: Computer Systems Engineer  

NSDL National Science Digital Library

In this video adapted from Pathways to Technology, learn what drove Choice Jenningsâ??someone who had never owned a computer of his ownâ??to become interested in computer graphics, attend community college, earn an associate's degree in computer systems engineering (CSE), and start his own information technology (IT) business. Also see the many roles a CSE professional can play, from systems administrator to IT director.The video runs 2:45 and is accompanied by a background essay, standards alignment, and discussion questions. Users who sign up for a free account can save the resource and download the video as well.

29

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

30

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

31

Helsinki University of Technology: Computational Information Technology  

NSDL National Science Digital Library

Computational Information Technology is a research group of the Laboratory of Computational Engineering at the Helsinki University of Technology in Finland. This section of the website introduces visitors to the group's work on modelling and analyzing complex physical, technical and economic processes and systems. Researchers "carry out method development and application oriented research on advanced probabilistic and information theoretic methods." Some applications include statistical modelling of financial markets, pattern recognition in neural networks, machine vision for microscope image processing, data mining, and intelligent human-machine interfaces. The Research Projects section describes the group's work in these areas and highlights the mathematical and statistical methods used, such as Bayesian methods, vision geometry, Turing's reaction-diffusion systems, and time-frequency analysis. Each research area has its own website, where the overall project and theoretical framework is described along with images and diagrams. Publications, such as theses and journal articles are listed and some conference proceedings and articles are available to download.

32

Digital holography and quantitative phase contrast imaging using computational shear interferometry  

NASA Astrophysics Data System (ADS)

In this publication, we give a brief introduction into the field of computational shear interferometry, which allows for determining arbitrary wave fields from a set of shear interferograms. We discuss limitations of the method with respect to the coherence of the underlying wave field and present various numerical methods to recover it from its sheared representations. Finally, we show experimental results on digital holography of objects with rough surfaces using a fiber coupled light-emitting diode and quantitative phase contrast imaging as well as numerical refocusing in differential interference contrast microscopy.

Falldorf, Claas; Agour, Mostafa; Bergmann, Ralf B.

2015-02-01

33

Digital holography: 30 years later  

NASA Astrophysics Data System (ADS)

Digital holography is analysis, synthesis and simulation of wave fields by means of digital computers and processors. Since first publications in digital holography, more than 30 years have passed. From then on, the ideas of digital holography formulated at that time has found quite a number of applications and implementations; but not all of them. Some old dreams such as that of holographic television, display and virtual reality still have not come true and some results and methods were left on the roadside. In the paper, a brief review of digital holography is presented and some 'roadside' subjects such as discrete representation of optical transforms and Monte Carlo methods for synthesis of computer generated display holograms and studying speckle noise in coherent imaging systems are revisited. In particular, it is shown (i) how, by an appropriate selection of a 'virtual' pseudo-random diffuser, one can generate Fourier holograms of 3D objects that can reconstruct their images from different observation directions and (ii) how such distortions in measuring diffusely scattered wave fields for computer reconstruction as limitation of the hologram size, limitation of its dynamic range and quantization affect speckle contrast in reconstructed images.

Yaroslavsky, Leonid P.

2002-06-01

34

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.

35

Children and Computers: New Technology--  

E-print Network

media tech- nology brought with it great promise for social and educational benefits, and great concern- nology benefits children by opening up new worlds to them, while opponents argue that new media might Computer technology has ushered in a new era of mass media, bringing with it great promise and great

Cassell, Justine

36

Content metamorphosis in synthetic holography  

NASA Astrophysics Data System (ADS)

A synthetic hologram is an optical system made of hundreds of images amalgamated in a structure of holographic cells. Each of these images represents a point of view on a three-dimensional space which makes us consider synthetic holography as a multiple points of view perspective system. In the composition of a computer graphics scene for a synthetic hologram, the field of view of the holographic image can be divided into several viewing zones. We can attribute these divisions to any object or image feature independently and operate different transformations on image content. In computer generated holography, we tend to consider content variations as a continuous animation much like a short movie. However, by composing sequential variations of image features in relation with spatial divisions, we can build new narrative forms distinct from linear cinematographic narration. When observers move freely and change their viewing positions, they travel from one field of view division to another. In synthetic holography, metamorphoses of image content are within the observer's path. In all imaging Medias, the transformation of image features in synchronisation with the observer's position is a rare occurrence. However, this is a predominant characteristic of synthetic holography. This paper describes some of my experimental works in the development of metamorphic holographic images.

Desbiens, Jacques

2013-02-01

37

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

38

Computer Education in Dental Laboratory Technology Programs.  

ERIC Educational Resources Information Center

A 1990 survey of 37 dental technology programs investigated 3 areas of computer use: current and anticipated general computer education courses; incorporation of computer applications into technology and management courses; and faculty use of the computer. Most programs are beginning to expand use of technology. (MSE)

Rogers, William A.; Hawkins, Robert Ross

1991-01-01

39

Center for Advanced Computational Technology  

NASA Technical Reports Server (NTRS)

The Center for Advanced Computational Technology (ACT) was established to serve as a focal point for diverse research activities pertaining to application of advanced computational technology to future aerospace systems. These activities include the use of numerical simulations, artificial intelligence methods, multimedia and synthetic environments, and computational intelligence, in the modeling, analysis, sensitivity studies, optimization, design and operation of future aerospace systems. 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 Center has four specific objectives: 1) conduct innovative research on applications of advanced computational technology to aerospace systems; 2) act as pathfinder by demonstrating to the research community what can be done (high-potential, high-risk research); 3) help in identifying future directions of research in support of the aeronautical and space missions of the twenty-first century; and 4) help in the rapid transfer of research results to industry and in broadening awareness among researchers and engineers of the state-of-the-art in applications of advanced computational technology to the analysis, design prototyping and operations of aerospace and other high-performance engineering systems. In addition to research, Center activities include helping in the planning and coordination of the activities of a multi-center team of NASA and JPL researchers who are developing an intelligent synthesis environment for future aerospace systems; organizing workshops and national symposia; as well as writing state-of-the-art monographs and NASA special publications on timely topics.

Noor, Ahmed K.

2000-01-01

40

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

41

Infinite possibilities: Computational structures technology  

NASA Astrophysics Data System (ADS)

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. 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.

1994-12-01

42

Electro-holography display using computer generated hologram of 3D objects based on projection spectra  

NASA Astrophysics Data System (ADS)

A new method of synthesizing computer-generated hologram of three-dimensional (3D) objects is proposed from their projection images. A series of projection images of 3D objects are recorded with one-dimensional azimuth scanning. According to the principles of paraboloid of revolution in 3D Fourier space and 3D central slice theorem, spectra information of 3D objects can be gathered from their projection images. Considering quantization error of horizontal and vertical directions, the spectrum information from each projection image is efficiently extracted in double circle and four circles shape, to enhance the utilization of projection spectra. Then spectra information of 3D objects from all projection images is encoded into computer-generated hologram based on Fourier transform using conjugate-symmetric extension. The hologram includes 3D information of objects. Experimental results for numerical reconstruction of the CGH at different distance validate the proposed methods and show its good performance. Electro-holographic reconstruction can be realized by using an electronic addressing reflective liquid-crystal display (LCD) spatial light modulator. The CGH from the computer is loaded onto the LCD. By illuminating a reference light from a laser source to the LCD, the amplitude and phase information included in the CGH will be reconstructed due to the diffraction of the light modulated by the LCD.

Huang, Sujuan; Wang, Duocheng; He, Chao

2012-11-01

43

Radiologic Applications Of Holography  

NASA Astrophysics Data System (ADS)

The technique of Image Plane Integral (IPI) Holography has been demonstrated as a useful method for providing autostereoscopic three-dimensional viewing for conventional cineangiography. IPI holograms have a bright, high resolution image that presents proper spatial perception and faster comprehension of orientation, shape and distribution of vascular anatomy. The actual holographic conversion can be made routinely, economically and quickly by photographic technicians with a moderate amount of retraining. The format of the hologram is a Mylar film that is easily seen on a modified light viewbox. Holographic techniques previously attempted with angiography and planar imaging modalities have shown many limitations including low S/N ratios, narrow viewing angles, narrow depth-of-field, distorted spatial relations and various optical aberrations. IPI holography offered at a single imaging center could provide a convenient source of three-dimensional hard copy that would enhance various specific modalities such as conventional cineangiography, DSA, X-ray CT, magnetic resonance imaging (NR) and single photon emission computed tomography (SPECT).

Lacey, D. C. Lee

1987-06-01

44

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

45

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

46

48 Years with holography  

NASA Astrophysics Data System (ADS)

The invention of holography was epoch-making in optics. Although the research on holography has cycled through active and stagnant periods, holography has gradually become a practical technique thanks to researchers' steady efforts. The technique has many attractive features and is used in many fields nowadays. The latest developments in high-definition image sensors and ultrashort pulsed lasers have given rise to a new possibility of holography. I have been engaged in the research and development of holography since I knew it by casual opportunity. In this paper, the research in early stages of holography is briefly described, and some of my basic and applied research in which I have so far engaged are introduced.

Kubota, Toshihiro

2014-11-01

47

Practical holography IV; Proceedings of the Meeting, LOS Angeles, CA, Jan. 18, 19, 1990  

NASA Astrophysics Data System (ADS)

Various papers on practical holography are presented. Individual topics addressed include: dichromated gelatin for holographic optical elements, novel enhancement of photopolymers, photopolymers for holography, new rehalogenating bleach for the production of Lippmann holograms, effects of bleach constituents on the performance of silver-halide holograms, highly sensitive positive resists for holography, holographic 3-D printer, generation of high-quality holograms with liquid-crystal SLM, display holography for medical tomography, 3-D display of ultrasound B-mode image by holographic stereogram, edge-lit rainbow holograms, electronic display system for computational holography, and DCG recording with red light. Also discussed are: corneal topography via two-wavelength holography, optically produced cylindrical HOEs for signal-processing applications, hybrid diffractive-refractive telescope, volume IR reflective gratings, holographic lithography for microcircuits, photorefractive waveguide grating switches for optical interconnects, non-Fourier computer-generated holography for 3-D display, phase selection in binary-phase-only filters for optical pattern recognition.

Benton, Stephen A.

1990-05-01

48

Faculty Computer Expertise and Use of Instructional Technology. Technology Survey.  

ERIC Educational Resources Information Center

This report shows the findings of a 1997 technology survey used to assess degrees of faculty computer expertise and the use of instructional technology. Part 1 reviews general findings of the fall 1997 technology survey: (1) the level of computer expertise among faculty, staff and administrators appears to be increasing; (2) in comparison with the…

Gabriner, Robert; Mery, Pamela

49

Photon correlation holography.  

PubMed

Unconventional holography called photon correlation holography is proposed and experimentally demonstrated. Using photon correlation, i.e. intensity correlation or fourth order correlation of optical field, a 3-D image of the object recorded in a hologram is reconstructed stochastically with illumination through a random phase screen. Two different schemes for realizing photon correlation holography are examined by numerical simulations, and the experiment was performed for one of the reconstruction schemes suitable for the experimental proof of the principle. The technique of photon correlation holography provides a new insight into how the information is embedded in the spatial as well as temporal correlation of photons in the stochastic pseudo thermal light. PMID:21263682

Naik, Dinesh N; Singh, Rakesh Kumar; Ezawa, Takahiro; Miyamoto, Yoko; Takeda, Mitsuo

2011-01-17

50

Advanced laptop and small personal computer technology  

NASA Technical Reports Server (NTRS)

Advanced laptop and small personal computer technology is presented in the form of the viewgraphs. The following areas of hand carried computers and mobile workstation technology are covered: background, applications, high end products, technology trends, requirements for the Control Center application, and recommendations for the future.

Johnson, Roger L.

1991-01-01

51

Computer Technologies 1.An Alien Autopsy  

E-print Network

Computer Technologies 1.An Alien Autopsy 2. Hardware and Software 3. The WIMP interface #12 · Motherboard · Memory · Processor · Chips #12;Implementation Technology · Relays · Vacuum Tubes · Transistors;Implementation Technology · Common Links? · A controllable switch · Computers are wires and switches #12;Chips

North Carolina at Chapel Hill, University of

52

Computing as Interaction: Agent and Agreement Technologies  

Microsoft Academic Search

With the emergence of new paradigms for computing, such as peer-to-peer technologies, grid computing, autonomic computing and other approaches, it is becoming increasingly natural to view large systems in terms of the services they offer, and consequently in terms of the entities or agents providing or consuming services. For example, web services technologies provide a standard means of interoperating be-

Michael Luck; Peter McBurney

53

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

54

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

55

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

56

Research of cloud computing data security technology  

Microsoft Academic Search

With cloud computing applications and research at home and abroad continue to advance cloud computing platform for users and data exchange between the greater the amount of user data transmission and storage a security threat, a cloud computing security is an important issue to be resolved. In this paper, all with state of encryption technology, presents a cloud computing data

Yubo Tan; Xinlei Wang

2012-01-01

57

Holography - Application To Art: Curatorial Observations  

NASA Astrophysics Data System (ADS)

An exploration of the need to define a specific and critical language to describe the art of holography. Within any discussion of art, critical analysis must maintain an objective openess, particularily when the discourse concerns new media. To apply technological invention to art, new media is often without precedent on which to base criticism and bias. For this reason, holography falls prey to comparative rhetoric and established evaluation of other forms of imaging,as photography emulated the compositional romanticism of painting initially. Isolated and often misunderstood within the context of history, new media vascillates between legitimacy and curiosity in an attempt to create specific parameters to identify perceptual transition.

Dinsmore, Sydney

1987-06-01

58

Marketing the Monster: Advertising Computer Technology  

Microsoft Academic Search

Interpreting the rich and striking blend of technical, intellectual, economic, social, and cultural information in advertisements of computer technology reveals how popular understanding and perceptions of the meaning of computers changed between 1950 and 1980. The study's findings contribute to the historical understanding of the social diffusion of the technology in society; its methodology illustrates the historiographic strengths and weaknesses

William Aspray; Donald de B. Beaver

1986-01-01

59

Theory-Guided Technology in Computer Science.  

ERIC Educational Resources Information Center

Examines the history of major achievements in computer science as portrayed by winners of the prestigious Turing award and identifies a possibly unique activity called Theory-Guided Technology (TGT). Researchers develop TGT by using theoretical results to create practical technology. Discusses reasons why TGT is practical in computer science and…

Ben-Ari, Mordechai

2001-01-01

60

Information Security Technology Based on DNA Computing  

Microsoft Academic Search

DNA computing is a new method of simulating biomolecular structure of DNA and computing by means of molecular biology technological computation. It introduces a fire-new data structure and calculating method, providing a new way for solving the NP-complete problem. It is a new computational method by harnessing the enormous parallel computing ability and high memory density of bio-molecules, which brings

Guangzhao Cui; Limin Qin; Yanfeng Wang; Xuncai Zhang

2007-01-01

61

Technologies for Visualization in Computational Aerosciences  

NASA Technical Reports Server (NTRS)

State-of-the-art research in computational aerosciences produces' complex, time-dependent datasets. Simulations can also be multidisciplinary in nature, coupling two or more physical disciplines such as fluid dynamics, structural dynamics, thermodynamics, and acoustics. Many diverse technologies are necessary for visualizing computational aerosciences simulations. This paper describes these technologies and how they contribute to building effective tools for use by domain scientists. These technologies include data management, distributed environments, advanced user interfaces, rapid prototyping environments, parallel computation, and methods to visualize the scalar and vector fields associated with computational aerosciences datasets.

Miceli, Kristina D.; Cooper, D. M. (Technical Monitor)

1993-01-01

62

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

63

When Computer Technologies Meet the Learning Sciences  

Microsoft Academic Search

This article explores how insights from the learning sciences can guide the effective use of computer technologies to promote learning and how these technologies make new types of learning opportunities possible. The discussion is organized to provide three illustrations of how the introduction of new technologies can have “ripple effects” that influence many different aspects of the teaching and learning

John Bransford; Sean Brophy; Susan Williams

2000-01-01

64

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

65

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.

66

Employee Resistance to Computer Technology.  

ERIC Educational Resources Information Center

The introduction of computers to the work place may cause employee stress. Aggressive, protective, and avoidance behaviors are forms of staff resistance. The development of good training programs will enhance productivity. Suggestions for evaluating computer systems are offered. (DF)

Ewert, Alan

1984-01-01

67

Transformable computers & hardware object technology  

Microsoft Academic Search

We define transformable computing systems as those machines that use the reconfigurable aspects of field programmable gate arrays (FPGA) to implement an algorithm. Researchers throughout the world have shown that computationally intensive software algorithms can be transposed directly into hardware design for extreme performance gain. The on-the-fly use of digital designs in a reconfigurable computer can easily be utilized from

John Schewel; Michael Thornburg; Steve Casselman

1995-01-01

68

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

69

Moral Responsibility and Computer Technology.  

ERIC Educational Resources Information Center

Noting a recent increase in the number of cases of computer crime and computer piracy, this paper takes up the question, "How can understanding the social context of computing help us--as parents, educators, and members of government and industry--to educate young people to become morally responsible members of an electronic information…

Friedman, Batya

70

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

71

(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

72

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.

73

Roadmap: Computer Technology Network Technology Associate of Applied Business  

E-print Network

as critical (in boldface and shaded areas) must be completed in the semester listed to ensure a timelyRoadmap: Computer Technology ­ Network Technology ­ Associate of Applied Business [RE graduation. Kent Core Summary (visit www.kent.edu/catalog/kent-core for course list) Kent Core Categories

Khan, Javed I.

74

Roadmap: Computer Technology Application Development Technology Associate of Applied Business  

E-print Network

and milestones designated as critical (in boldface and shaded areas) must be completed in the semester listedRoadmap: Computer Technology ­ Application Development Technology ­ Associate of Applied Business to ensure a timely graduation. Kent Core Summary (visit www.kent.edu/catalog/kent-core for course list) Kent

Khan, Javed I.

75

Roadmap: Computer Technology General Technology Associate of Applied Business  

E-print Network

as critical (in boldface and shaded areas) must be completed in the semester listed to ensure a timelyRoadmap: Computer Technology ­ General Technology ­ Associate of Applied Business [RE graduation. Kent Core Summary (visit www.kent.edu/catalog/kent-core for course list) Kent Core Categories

Khan, Javed I.

76

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.

77

Conductivity of a strange metal: from holography to memory functions  

NASA Astrophysics Data System (ADS)

We study the electrical response of a wide class of strange metal phases without quasiparticles at finite temperature and charge density, with explicitly broken translational symmetry, using holography. The low frequency electrical conductivity exhibits a Drude peak, so long as momentum relaxation is slow. The relaxation time and the direct current conductivity are exactly equal to what is computed, independently of holography, via the memory function framework.

Lucas, Andrew

2015-03-01

78

Technologic advances in computed tomography  

SciTech Connect

Technologic improvements in CT continue. As always, emphasis in the past year has been on reducing scan times. Units employing slip-ring technology are now available. This technology makes possible spiral scanning, which promises to further reduce the effects of image-degrading patient motion, as well as opening new possibilities for quantitative and dynamic CT studies. These applications are discussed here and an update on the advances on cine-CT and the Dynamic Spatial Reconstructor unit is provided. Three-dimensional reconstructions obtained at very short scan times promise to be of particular benefit for scanning the bronchial tree. Finally, patient doses of radiation in CT are discussed.

Villafana, T. (Temple Univ. Hospital, Philadelphia, PA (USA))

1991-04-01

79

Beyond Computation: Information Technology, Organizational  

E-print Network

technologies, such as the telegraph, the steam engine and the electric motor, illustrate a pattern of information that can be digitized--numbers, text, video, music, speech, programs, and engineer- ing drawings

80

Localization & exact holography  

NASA Astrophysics Data System (ADS)

We consider the AdS 2 /CFT 1 holographic correspondence near the horizon of big four-dimensional black holes preserving four supersymmetries in toroidally compactified Type-II string theory. The boundary partition function of CFT 1 is given by the known quantum degeneracies of these black holes. The bulk partition function is given by a functional integral over string fields in AdS 2. Using recent results on localization we reduce the infinite-dimensional functional integral to a finite number of ordinary integrals over a space of localizing instantons. Under reasonable assumptions about the relevant terms in the effective action, these integrals can be evaluated exactly to obtain a bulk partition function. It precisely reproduces all terms in the exact Rademacher expansion of the boundary partition function as nontrivial functions of charges except for the Kloosterman sum which can in principle follow from an analysis of phases in the background of orbifolded instantons. Our results can be regarded as a step towards proving `exact holography' in that the bulk and boundary partition functions computed independently agree for finite charges. Since the bulk partition function defines the quantum entropy of the black hole, our results enable the evaluation of perturbative as well as nonperturbative quantum corrections to the Bekenstein-Hawking-Wald entropy of these black holes.

Dabholkar, Atish; Gomes, João; Murthy, Sameer

2013-04-01

81

Implementing Computer Technologies: Teachers' Perceptions and Practices  

ERIC Educational Resources Information Center

This study investigates personal and setting characteristics, teacher attitudes, and current computer technology practices among 764 elementary and secondary teachers from both private and public school sectors in Quebec. Using expectancy-value theory, the Technology Implementation Questionnaire (TIQ) was developed; it consists of 33 belief items…

Wozney, Lori; Venkatesh, Vivek; Abrami, Philip

2006-01-01

82

OFFICE OF INFORMATION TECHNOLOGY COMPUTER SECURITY POLICY  

E-print Network

OFFICE OF INFORMATION TECHNOLOGY COMPUTER SECURITY POLICY RESPONsmLE ADMINISTRATOR: RESPONsm Manual, Chapter 14: Data and Information Security, Section 4, Information Security Plans ­ Physical%20-%20DATA%20AND%20INFORMATION%20SECURITY.pdf. CONTACTS Refer to the Office of Information Technology

Hemmers, Oliver

83

Computer Technology: For Better or Worse?  

ERIC Educational Resources Information Center

Computer technology ought to be among the most helpful and useful of any technology, but if it is not treated with care, the society will be worse off for it. The Federal Privacy Act of 1974 established the Privacy Protection Study Commission whose business started in June, 1975. In examination of the private sector, the commission's…

Ware, Willis H.

84

http://computer.org Innovative Technology for Computer Professionals  

E-print Network

Technology for Computer Professionals #12;0018-9162/02/$17.00 © 2002 IEEE56 Computer Yima: A Second and developed a second-generation CM server that demonstrates several advanced concepts. We call our system Yima, a name denoting the first man in ancient Iranian religion. While Yima has not achieved the refinement

Shahabi, Cyrus

85

High Performance Computing Technologies Jack Dongarra  

E-print Network

1 High Performance Computing Technologies Jack Dongarra University of Tennessee Oak Ridge National ffl Performance Evaluation -- Linpack Benchmark, Top500 -- ParkBench 3 Computational Science ffl HPC -- noise/vibrational optimization -- traffic simulation ffl Main gains: -- reduced time to market of new

Dongarra, Jack

86

High Performance Computing Technologies Jack Dongarra  

E-print Network

1 High Performance Computing Technologies Jack Dongarra University of Tennessee Oak Ridge National Benchmark, Top500 ParkBench 3 Computational Science HPC o ered a new way to do science: Experiment Theory: aerodynamics similar to aerospace industry crash simulation metal sheet forming noise vibrational optimization

Dongarra, Jack

87

Nature-Inspired Computing Technology and Applications  

Microsoft Academic Search

Increasing demands upon current computer systems, along with technological changes, create a need for more flexible and adaptable systems. Natural systems provide many examples of the type of versatile system required. This paper reviews examples of nature-inspired computing, drawing inspiration from many different areas of living systems including evolution, ecology, development and behaviour. The implications for the future development of

P Marrow

2000-01-01

88

Computer Technology and the Social Studies.  

ERIC Educational Resources Information Center

The citizen of tomorrow needs to understand the role of information in political systems; computer technology and information storage, retrieval, and use; the implications of information systems for individual rights; and the impact of computer crime, databanks, and systems analysis on the social, economic, and political spheres. (QKR)

Glenn, Allen D.; Klassen, Daniel L.

1983-01-01

89

On the Emergence of New Computer Technologies  

ERIC Educational Resources Information Center

This work presents a review of the development and application of computers. It traces the highlights of emergent computing technologies shaping our world. Recent trends in hardware and software deployment are chronicled as well as their impact on various segments of the society. The expectations for the future are also discussed along with…

Asaolu, Olumuyiwa Sunday

2006-01-01

90

Computer Maintenance Technology. Suggested Basic Course Outline.  

ERIC Educational Resources Information Center

This competency-based basic course outline is designed for a two-year secondary program in computer maintenance technology. The first year is devoted to basic electricity and electronics, the second to the troubleshooting, maintenance, and service of microcomputers. (The repair section is based upon the Apple II computer, disc drive, monitor, and…

Texas A and M Univ., College Station. Vocational Instructional Services.

91

Computer technology forecast study for general aviation  

NASA Technical Reports Server (NTRS)

A multi-year, multi-faceted program is underway to investigate and develop potential improvements in airframes, engines, and avionics for general aviation aircraft. The objective of this study was to assemble information that will allow the government to assess the trends in computer and computer/operator interface technology that may have application to general aviation in the 1980's and beyond. The current state of the art of computer hardware is assessed, technical developments in computer hardware are predicted, and nonaviation large volume users of computer hardware are identified.

Seacord, C. L.; Vaughn, D.

1976-01-01

92

Coherence holography and photon-correlation holography: marriage between holography and statistical optics  

NASA Astrophysics Data System (ADS)

We review two techniques of unconventional holography, coherence holography and photon-correlation holography, which we recently proposed and experimentally demonstrated. We will emphasize the importance of noticing mathematical analogies in optics and physical phenomena, which give insights into the methodology for developing new techniques.

Takeda, Mitsuo; Wang, Wei; Naik, Dinesh N.

2011-10-01

93

Model-Trained Neural Networks and Electronic Holography Demonstrated to Detect Damage in Blades  

NASA Technical Reports Server (NTRS)

Detect Damage in Blades Electronic holography can show damaged regions in fan blades at 30 frames/sec. The electronic holograms are transformed by finite-element-model-trained artificial neural networks to visualize the damage. The trained neural networks are linked with video and graphics to visualize the bending-induced strain distribution, which is very sensitive to damage. By contrast, it is very difficult to detect damage by viewing the raw, speckled, characteristic fringe patterns. For neural-network visualization of damage, 2 frames or 2 fields are used, rather than the 12 frames normally used to compute the displacement distribution from electronic holograms. At the NASA Lewis Research Center, finite element models are used to compute displacement and strain distributions for the vibration modes of undamaged and cracked blades. A model of electronic time-averaged holography is used to transform the displacement distributions into finite-element-resolution characteristic fringe patterns. Then, a feedforward neural network is trained with the fringe-pattern/strain-pattern pairs, and the neural network, electronic holography, and video are implemented on a workstation. Now that the neural networks have been tested successfully at 30 frames/sec on undamaged and cracked cantilevers, the electronic holography and neural-network processing are being adapted for onsite damage inspection of twisted fan blades and rotormounted blades. Our conclusion is that model-trained neural nets are effective when they are trained with good models whose application is well understood. This work supports the aeromechanical testing portion of the Advanced Subsonic Technology Project.

Decker, Arthur J.; Fite, E. Brian; Mehmed, Oral; Thorp, Scott A.

1998-01-01

94

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

95

Future Applications of Electronic Technology to Education.  

ERIC Educational Resources Information Center

Developments in electronic technology that have improved and linked together telecommunication and computers are discussed, as well as their use in instruction, implications of this use, and associated issues. The first section briefly describes the following developments: microcomputers and microprocessors, bubble memory, lasers, holography

Lewis, Arthur J.; And Others

96

Computer Game and Simulation Technology  

NSDL National Science Digital Library

This video, created by ATETV and presented by WGBH, takes a look at the Computer Game and Simulation program at Wake Technical Community College. This video provides an overview of the diverse range of classes that the program offers, as well as how students can specialize their education within the field. This video also explains that by studying game development students can also find a career in simulation development in almost any industry. This video is helpful for anyone interested in the field of game design or graphic design. Educators will also find a background essay, discussion questions, and standards alignment for the material. Running time for the video is 2:54.

97

Development of a Novel Breast Cancer Detector based on Improved Holography Concave Grating Imaging Spectrometer  

NASA Astrophysics Data System (ADS)

Breast cancer can be detected by B-mode ultrasonic imaging, X-mammography, CT imaging, and MRI. But some drawbacks existed in these methods, their applications was limited in some certain. So, a novel high resolution breast cancer detector (BCD) is developed in this paper. Meanwhile, an improved holography concave grating imaging spectrometer (HCGIS) is designed. In this HCGIS, the holography concave grating is used as the diffraction grating. Additionally, CCD with combined image acquisition (IAQ) card and the 3D scan platform are used as the spectral image acquisition component. This BCD consists of the light source unit, light-path unit, check cavity, splitting-light unit, spectrum acquisition and imaging unit, signal processing unit, computer and data analysis software unit, etc. Experimental results show that the spectral range of the novel BCD can reach 300-1000 nm, its wavelength resolution can reach 1nm, and this system uses the back-split-light technology and the splitting-light structure of holography concave grating. Compared with the other instruments of breast cancer detection, this BCD has many advantages, such as, compacter volume, simpler algorithm, faster processing speed, higher accuracy, cheaper cost and higher resolution, etc. Therefore, this BCD will have the potential values in the detection of breast disease.

Ren, Zhong; Liu, Guodong; Zeng, Lvming; Huang, Zhen

2011-01-01

98

Real-time visualization and analysis of airflow field by use of digital holography  

NASA Astrophysics Data System (ADS)

The measurement and analysis of airflow field is very important in fluid dynamics. For airflow, smoke particles can be added to visually observe the turbulence phenomena by particle tracking technology, but the effect of smoke particles to follow the high speed airflow will reduce the measurement accuracy. In recent years, with the advantage of non-contact, nondestructive, fast and full-field measurement, digital holography has been widely applied in many fields, such as deformation and vibration analysis, particle characterization, refractive index measurement, and so on. In this paper, we present a method to measure the airflow field by use of digital holography. A small wind tunnel model made of acrylic glass is built to control the velocity and direction of airflow. Different shapes of samples such as aircraft wing and cylinder are placed in the wind tunnel model to produce different forms of flow field. With a Mach-Zehnder interferometer setup, a series of digital holograms carrying the information of airflow filed distributions in different states are recorded by CCD camera and corresponding holographic images are numerically reconstructed from the holograms by computer. Then we can conveniently obtain the velocity or pressure information of the airflow deduced from the quantitative phase information of holographic images and visually display the airflow filed and its evolution in the form of a movie. The theory and experiment results show that digital holography is a robust and feasible approach for real-time visualization and analysis of airflow field.

Di, Jianglei; Wu, Bingjing; Chen, Xin; Liu, Junjiang; Wang, Jun; Zhao, Jianlin

2013-04-01

99

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

100

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

101

Reviews of computing technology: Client-server technology  

SciTech Connect

One of the most frequently heard terms in the computer industry these days is ``client-server.`` There is much misinformation available on the topic, and competitive pressures on software vendors have led to a great deal of hype with little in the way of supporting products. The purpose of this document is to explain what is meant by client-server applications, why the Advanced Technology and Architecture (ATA) section of the Information Resources Management (IRM) Department sees this emerging technology as key for computer applications during the next ten years, and what ATA sees as the existing standards and products available today. Because of the relative immaturity of existing client-server products, IRM is not yet guidelining any specific client-server products, except those that are components of guidelined data communications products or database management systems.

Johnson, S.M.

1990-09-01

102

Reviews of computing technology: Client-server technology  

SciTech Connect

One of the most frequently heard terms in the computer industry these days is client-server.'' There is much misinformation available on the topic, and competitive pressures on software vendors have led to a great deal of hype with little in the way of supporting products. The purpose of this document is to explain what is meant by client-server applications, why the Advanced Technology and Architecture (ATA) section of the Information Resources Management (IRM) Department sees this emerging technology as key for computer applications during the next ten years, and what ATA sees as the existing standards and products available today. Because of the relative immaturity of existing client-server products, IRM is not yet guidelining any specific client-server products, except those that are components of guidelined data communications products or database management systems.

Johnson, S.M.

1990-09-01

103

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

104

Ultrarealistic imaging: the future of display holography  

NASA Astrophysics Data System (ADS)

Ultrarealistic imaging is the science of producing images that faithfully recreate the light field surrounding an object, such that the unaided eye of a human observer cannot distinguish the difference between the original and the image. Recent technology improvements are now set to transform the fields of both analog and digital display holography, permitting both techniques to operate in the ultrarealistic regime. In particular, ultrarealistic analog holograms have now heralded the serious use of holography in such areas as museum display and cultural heritage protection. These full-color holograms are characterized by a substantially lower noise and a greater spectral fidelity. New recording systems, based on recent diode-pumped solid-state and semiconductor lasers combined with recording materials and processing, have been behind these improvements. Progress in illumination technology, however, has also led to a major reduction in display noise and to a significant increase in the clear image depth and brightness of holograms. Recent progress in one-step direct-write digital holography (DWDH) is now also opening the way to the creation of a new type of ultrarealistic display: the high virtual volume display. This is a large format full-parallax DWDH reflection hologram having a fundamentally larger clear image depth.

Bjelkhagen, Hans I.; Brotherton-Ratcliffe, David

2014-11-01

105

Reviews of computing technology: Object-oriented technology  

SciTech Connect

A useful metaphor in introducing object-oriented concepts is the idea of a computer hardware manufacturer assembling products from an existing stock of electronic parts. In this analogy, think of the parts as pieces of computer software and of the finished products as computer applications. Like its counterpart, the object is capable of performing its specific function in a wide variety of different applications. The advantages to assembling hardware using a set of prebuilt parts are obvious. The design process is greatly simplified in this scenario, since the designer needs only to carry the design down to the chip level, rather than to the transistor level. As a result, the designer is free to develop a more reliable and feature rich product. Also, since the component parts are reused in several different products, the parts can be made more robust and subjected to more rigorous testing than would be economically feasible for a part used in only one piece of equipment. Additionally, maintenance on the resulting systems is simplified because of the part-level consistency from one type of equipment to another. The remainder of this document introduces the techniques used to develop objects, the benefits of the technology, outstanding issues that remain with the technology, industry direction for the technology, and the impact that object-oriented technology is likely to have on the organization. While going through this material, the reader will find it useful to remember the parts analogy and to keep in mind that the overall purpose of object-oriented technology is to create software parts and to construct applications using those parts.

Skeen, D.C.

1993-03-01

106

Multiple-image encryption by compressive holography.  

PubMed

We present multiple-image encryption (MIE) based on compressive holography. In the encryption, a holographic technique is employed to record multiple images simultaneously to form a hologram. The two-dimensional Fourier data of the hologram are then compressed by nonuniform sampling, which gives rise to compressive encryption. Decryption of individual images is cast into a minimization problem. The minimization retains the sparsity of recovered images in the wavelet basis. Meanwhile, total variation regularization is used to preserve edges in the reconstruction. Experiments have been conducted using holograms acquired by optical scanning holography as an example. Computer simulations of multiple images are subsequently demonstrated to illustrate the feasibility of the MIE scheme. PMID:22410905

Di, Hong; Zheng, Kangfeng; Zhang, Xin; Lam, Edmund Y; Kim, Taegeun; Kim, You Seok; Poon, Ting-Chung; Zhou, Changhe

2012-03-01

107

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

108

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

109

Information Technology (IT) & Computers Contact Person  

E-print Network

Information Technology (IT) & Computers Contact Person: Winnie Lante Room B6-C N-Z Hall Ph: 846-0865 wdl@ufl.edu Karen Porter Rm B6-D N-Z Hall PH: 846-0854 Reed Lab PH: 392-9492 Karen.porter@ufl.edu E: (username: if-svc-forestry, password: forestry) 3. Select and open the Public Folders (bottom of left side

Watson, Craig A.

110

Digital Holography Display (2)  

NASA Astrophysics Data System (ADS)

This paper describes the extension work from the last Digital Holography Projector System. From the developed works shows that, some unforeseen factors have created the difficulties for the system alignment. Such factors are the DMD frame rate, light source and diffractive zero order. It is really the challenging development works to achieve the virtual 3D model display on the high speed rotation screen. The three most key factors are emphasizing: 1) The display device's frame rate; 2) The light source orientation angle; and 3) The zero order filtering optic. 1) This device's is the digital micro mirror, in short is DMD. It is the high speed switching device has developed by the most recent technology. The switching frame rate can go up as high as 291fps. At first, the 8 bits depth file must be digitalized and stored for DMD onboard Ram. The digitalized data are transmitting from the PC USB to DMD onboard Ram. Instead of the data are downloading directly from the PC to DVI or VGA during display, this downloading method cause slower down the display speed, which is the common frame rate of 30 Hz. Next, the onboard Ram data then transfer to the DMD mirror's for display, at the 8 bits 291 fps speed. At this frame rate, the display 2D image can almost cover for 10 of out of the 360 0 in 1 revolution. 2) This laser light source must be installed such that free for orientated in any arbitrary angle from 220 to 450. Which is normalized to the DMD mirrors and the brief sketch show on figure (a). The purpose of orientated the light source is ensure that multi diffractive order would be reflected straight from the mirrors. (This multi diffractive order is the phenomenon of the digital micro mirror's characteristic). This mean, the reconstruct images would be followed the DMD normalized direction reflected up to fibre conduit. Moreover, this orientated method install of the laser light source is making space for other optical lenses or device driver/controller. Because, all equipments and components can be easy line up and mounted in the compartment. 3) This solid 6 mm diameter fibre conduit is implemented to transmit the higher diffractive image, it is also the brightest and clearer image as compare to other lower order images. This means many of the lower order and blurred images would be neglected for display and consider as the energy lost.

Lee, Cheok Peng; Asundi, A.; Yu, Yang; Xiao, Zhen Zhong

111

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

112

Digital holography to light field  

NASA Astrophysics Data System (ADS)

Holography uses wave (physical) optical principles of interference and diffraction to record and display images. Interference allows us to record the amplitude and phase of the optical wave emanating from an object on a film or recording medium and diffraction enables us to see this wave-field, i.e. the amplitude and phase of the object. Visually this corresponds to both perspective and depth information being reconstructed as in the original scene. Digital Holography has enabled quantification of phase which in some applications provides meaningful engineering parameters. There is growing interest in reconstructing this wavefield without interference. Thus the non-interferometric Transport of Intensity Equation (TIE) method is gaining increased research, which uses two or more defocused images to reconstruct the phase. Due to its non-interferometric nature, TIE relaxes the stringent beam-coherence requirements for interferometry, extending its applications to various optical fields with arbitrary spatial and temporal coherence. The alternate school of thought emerges from the computer science community primarily deals with ray optics. In a normal imaging system all rays emerging from an object point into are focused to a conjugate image point. Information of ray direction is lost and thus the perspective and depth information. A light field image is one that has information of both amplitude and direction of rays fanning from any object point and thus provides perspective (or what could be termed as phase) of the object wave as well. It would thus be possible to extract phase as we know it from this albeit for a coherent illumination case.

Asundi, Anand; Zuo, Chao

2014-05-01

113

2D reconstruction of terahertz Gabor inline digital holography  

NASA Astrophysics Data System (ADS)

Terahertz imaging can make up the defect of imaging opaque samples in visible light domain. Digital holography is a new technology for extracting full information of the original object. In the paper, the improved angular spectrum (AS) algorithm is coulping the original AS algorithm with direct current (DC) suppression method, apodization and piecewise-nonlinear transformation. The reconstruction characteristics of the algorithm have been studied by numerical analysis and experimental researches. The experimental results validate the application value of the algorithms in improving 2D reconstructed image quality in terahertz Gabor inline digital holography.

Li, Yun-Da; Li, Qi; Hu, Jia-Qi; Zhao, Yongpeng

2014-11-01

114

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

115

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

116

Forbidden Landscape from Holography  

E-print Network

We present a class of field configurations that are forbidden in the quantum gravity because of inconsistency in the dual field theory from holography. Scale invariant but non-conformal field theories are impossible in (1+1) dimension, and so should be the corresponding gravity dual. In particular, the "spontaneous Lorentz symmetry breaking" models and the "ghost condensation" models, which are well-studied in phenomenology literatures, are forbidden in any consistent quantum theories of gravity in (1+2) dimension since they predict such inconsistent field configurations.

Yu Nakayama

2009-07-14

117

Dyonic Stars for Holography  

E-print Network

We construct back-reacted asymptotically AdS_4 backgrounds with both electric and magnetic charge, at finite temperature and chemical potential. The system consists of a condensed bulk Dirac field hovering over a charged black brane. We give a detailed microscopic treatment of the bulk fermions, from which we derive the usual fluid approximations describing the condensate. In the context of holography, such a gravitational solution is dual to a (2+1)-dimensional CFT with a U(1) current, at finite density and strong coupling, subjected to a transverse magnetic field.

Carney, Daniel

2015-01-01

118

Dyonic Stars for Holography  

E-print Network

We construct back-reacted asymptotically AdS_4 backgrounds with both electric and magnetic charge, at finite temperature and chemical potential. The system consists of a condensed bulk Dirac field hovering over a charged black brane. We give a detailed microscopic treatment of the bulk fermions, from which we derive the usual fluid approximations describing the condensate. In the context of holography, such a gravitational solution is dual to a (2+1)-dimensional CFT with a U(1) current, at finite density and strong coupling, subjected to a transverse magnetic field.

Daniel Carney; Mohammad Edalati

2015-01-27

119

The Intel Science and Technology Center for Social Computing  

E-print Network

is Social What these examples teach us is that, however profoundly technology changes, driven by Moore's LawIntel Labs The Intel Science and Technology Center for Social Computing Abstract Social Computing is the study of information technologies and digital media as social and cultural phenomena. Rather than using

Dourish,Paul

120

Massachusetts Institute of Technology, Cambridge, Massachusetts Laboratory for Computer Science  

E-print Network

Massachusetts Institute of Technology, Cambridge, Massachusetts Laboratory for Computer Science for Computer Science, Massachusetts Institute of Technology, 545 Technology Square, Cambridge, MA 02139, a perfect jailer For man or beast: the hundred eyes took turns At staring wide awake in pairs, and two

121

Multi-field inflation from holography  

NASA Astrophysics Data System (ADS)

We initiate the study of multi-field inflation using holography. Bulk light scalar fields correspond to nearly marginal operators in the boundary theory and the dual quantum field theory is a deformation of a CFT by such operators. We compute the power spectra of adiabatic and entropy perturbations in a simple model and find that the adiabatic curvature perturbation is not conserved in the presence of entropy perturbations but becomes conserved when the entropy perturbations are set to zero or the model is effectively a single scalar model, in agreement with expectations from cosmological perturbation theory.

Garriga, Jaume; Skenderis, Kostas; Urakawa, Yuko

2015-01-01

122

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

123

Computer Utilization in Industrial Arts/Technology Education. Curriculum Guide.  

ERIC Educational Resources Information Center

This guide is intended to assist industrial arts/technology education teachers in helping students in grades K-12 understand the impact of computers and computer technology in the world. Discussed in the introductory sections are the ways in which computers have changed the face of business, industry, and education and training; the scope and…

Connecticut Industrial Arts Association.

124

Michigan Technological University Department of Computer Science  

E-print Network

computing, distributed systems, embedded and multimedia systems, graphics & visualization, human computer.S. and Ph.D. students. Faculty research interests include architecture, artificial intelligence, cloud

125

Atomic resolution holography.  

PubMed

Atomic resolution holography, such as X-ray fluorescence holography (XFH)[1] and photoelectron holography (PH), has the attention of researcher as an informative local structure analysis, because it provides three dimensional atomic images around specific elements within a range of a few nanometers. It can determine atomic arrangements around a specific element without any prior knowledge of structures. It is considered that the atomic resolution holographic is a third method of structural analysis at the atomic level after X-ray diffraction (XRD) and X-ray absorption fine structure (XAFS). As known by many researchers, XRD and XAFS are established methods that are widespread use in various fields. XRD and XAFS provide information on long-range translational periodicities and very local environments, respectively, whereas the atomic resolution holography gives 3D information on the local order and can visualize surrounding atoms with a large range of coordination shells. We call this feature "3D medium-range local structure observation".In addition to this feature, the atomic resolution holography is very sensitive to the displacement of atoms from their ideal positions, and one can obtain quantitative information about local lattice distortions by analyzing reconstructed atomic images[2] When dopants with different atomic radii from the matrix elements are present, the lattices around the dopants are distorted. However, using the conventional methods of structural analysis, one cannot determine the extent to which the local lattice distortions are preserved from the dopants. XFH is a good tool for solving this problem.Figure 1 shows a recent achievement on a relaxor ferroelectric of Pb(Mg1/3Nb2/3)O3 (PMN) using XFH. The structural studies of relaxor ferroelectrics have been carried out by X-ray or neutron diffractions, which suggested rhombohedral distortions of their lattices. However, their true pictures have not been obtained, yet. The Nb K? holograms showed four separate Pb images, as shown in Fig.1. Using these images, we could obtain acute and obtuse rhombohedral structures of the crystal unit cells. Moreover, the Pb-Pb correlated images reconstructed from Pb L? holograms showed a local structure of body center-like 2a0 ×2a0 × 2a0 superlattice, proving a rigid 3D network structural model combining the two kinds of rhombohedrons. This superstructure are believed to play an important role in the relaxor behaviour of PMN at atomic level[3].jmicro;63/suppl_1/i13/DFU047F1F1DFU047F1Fig. 1.3D images of the nearest Pb and O atoms around Nb in Pb(Mg1/3Nb2/3)O3. The cube represents 1/8 of the unit cell. PMID:25359802

Hayashi, Kouichi

2014-11-01

126

Computer Technology in Higher Education: An Experiment, Not a Solution  

Microsoft Academic Search

One of the major issues in higher education today is incorporating computer technology into our programs and delivery systems. As is often the case with science and technology, many people assume that technology should be incorporated, and they move right into implementation without asking whether the technology should be incorporated and, if so, under what conditions and for what purposes.

Jan Rintala

1998-01-01

127

Mathematical refocusing of images in electronic holography  

SciTech Connect

This paper presents an illustration of mathematical refocusing of images obtained by the HoloFringe300K electronic holography program. The purpose is to demonstrate that this form of electronic holography is equivalent to image-plane, phase-stepped digital holography. The mathematical refocusing method used here differs from those in common use and may have some advantages.

Stetson, Karl A.

2009-07-01

128

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

129

The Steam Engine and the Computer: What Makes Technology Revolutionary.  

ERIC Educational Resources Information Center

This discussion of technological revolution focuses on the computer and its uses in education. Contrasts between human traits, such as insight and creativity, and computer capabilities are discussed; the computer as its own instructional device is described; and possible educational changes resulting from computers are addressed. (LRW)

Simon, Herbert A.

1987-01-01

130

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

131

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

132

Superconductivity, Superfluidity and Holography  

E-print Network

This is a concise review of holographic superconductors and superfluids. We highlight some predictions of the holographic models and the emphasis is given to physical aspects rather than to the technical details, although some references to understand the latter are systematically provided. We include gapped systems in the discussion, motivated by the physics of high-temperature superconductivity. In order to do so we consider a compactified extra dimension (with radius R), or, alternatively, a dilatonic field. The first setup can also be used to model cylindrical superconductors; when these are probed by an axial magnetic field a universal property of holography emerges: while for large R (compared to the other scales in the problem) non-local operators are suppressed, leading to the so called Little-Parks periodicity, the opposite limit shows non-local effects, e.g. the uplifting of the Little-Parks periodicity. This difference corresponds in the gravity side to a Hawking-Page phase transition.

Alberto Salvio

2013-01-16

133

Michigan Technological University Department of Computer Science  

E-print Network

lecturers. Faculty research interests include architecture, artificial intelligence, compilers, distributed systems, embedded systems, graphics, hu- man computer interaction, machine learning, parallel computing

134

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

135

Internetics: Technologies, Applications and Academic Field or Parallel Computing and Computational Science Do Not Quite Work  

Microsoft Academic Search

Ten years ago, we were all sure that parallel computing technology and the interdisciplinary academic field of computational science would be center pieces of both academic and economic growth. We show that this insight was, in principle, correct but was an incomplete vision for large-scale computation implies both increased computer power and increasing numbers of users and applications. Parallel computing

Geoffrey C. Fox

136

Strengthening Computer Technology Programs. Special Publication Series No. 49.  

ERIC Educational Resources Information Center

Three papers present examples of strategies used by developing institutions and historically black colleges to strengthen computer technology programs. "Promoting Industry Support in Developing a Computer Technology Program" (Albert D. Robinson) describes how the Washtenaw Community College (Ann Arbor, Michigan) Electrical/Electronics Department…

McKinney, Floyd L., Comp.

137

Illinois Institute of Technology Electrical and Computer Engineering  

E-print Network

Illinois Institute of Technology Electrical and Computer Engineering Department Chair Search The Illinois Institute of Technology (IIT) is seeking a distinguished scholar for Department Chair of the Electrical and Computer Engineering (ECE) Department (www.ece.iit.edu). IIT is a private research university

Heller, Barbara

138

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

139

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science  

E-print Network

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science CASA-Report 12-33 October 2012 Index-aware model order reduction for index-2 differential-algebraic equations by G. Ali, N Department of Mathematics and Computer Science Eindhoven University of Technology P.O. Box 513 5600 MB

Eindhoven, Technische Universiteit

140

Senior Nursing Students Comfort Levels with Computer Technology.  

ERIC Educational Resources Information Center

This paper describes the rationale for investigating the comfort levels in utilizing computer technology by senior level students in a baccalaureate nursing program. Students were surveyed before and after being exposed to various learning activities requiring interaction with computer technology. These structured learning activities included: use…

Draude, Barbara J.; McKinney, Susan H.

141

Cloud Computing. Technology Briefing. Number 1  

ERIC Educational Resources Information Center

Cloud computing is Internet-based computing in which shared resources, software and information are delivered as a service that computers or mobile devices can access on demand. Cloud computing is already used extensively in education. Free or low-cost cloud-based services are used daily by learners and educators to support learning, social…

Alberta Education, 2013

2013-01-01

142

Roadmap: Applied Engineering Computer Engineering Technology -Bachelor of Science  

E-print Network

Roadmap: Applied Engineering ­ Computer Engineering Technology - Bachelor of Science [AT-BS-AENG-CET] College of Applied Engineering, Sustainability and Technology Catalog Year: 2012-2013 Page 1 of 2 | Last Electronic Communication 3 TECH 36620 Project Management in Engineering and Technology 3 Kent Core

Sheridan, Scott

143

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

E-print Network

Roadmap: Radiologic Imaging Sciences - Computed Tomography (with AAS Radiologic Technology) - Bachelor of Radiologic and Imaging Sciences Technology [RE-BRIT-RIS-CTRT] Regional College Catalog Year Hours] Note: Students must have earned an AAS degree in Radiologic Technology (42 semester credits

Sheridan, Scott

144

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

E-print Network

Roadmap: Radiologic Imaging Sciences - Computed Tomography (with AAS Radiologic Technology) - Bachelor of Radiologic and Imaging Sciences Technology [RE-BRIT-RIS-CTRT] Regional College Catalog Year Hours] Note: Students must have earned an AAS degree in Radiologic Technology (69-71 semester credits

Sheridan, Scott

145

Some patterns of technological change in high-performance computers  

Microsoft Academic Search

High-performance computer technology is undergoing a period of unusually rapid change, and this paper attempts to describe the patterns of these changes in a systematic way. Pattern recognition is the basis of technology forecasting, and it is through technology forecasting that we obtain the anticipatory information that allows us to avoid problems and create opportunities. We will first identify the

Jack Worlton

1988-01-01

146

A perspective on technical needs in computational structures technology  

NASA Technical Reports Server (NTRS)

The wide spectrum of needs and applications are demonstrated of computational structural mechanics. The spectrum ranges from micro structural mechanics to the optimization of the performance of aerovehicles. Critical high leveraged technologies will require engineering process modernization and automation, affordable structures and materials, and advanced computational technology. Recent advances at Rockwell International in computational structural mechanics addressed these issues and improve the ability to achieve advanced aircraft objectives.

Abdi, Frank F.; Savoni, Gregory L.; Newell, Kenneth J.

1992-01-01

147

A perspective on technical needs in computational structures technology  

NASA Astrophysics Data System (ADS)

The wide spectrum of needs and applications are demonstrated of computational structural mechanics. The spectrum ranges from micro structural mechanics to the optimization of the performance of aerovehicles. Critical high leveraged technologies will require engineering process modernization and automation, affordable structures and materials, and advanced computational technology. Recent advances at Rockwell International in computational structural mechanics addressed these issues and improve the ability to achieve advanced aircraft objectives.

Abdi, Frank F.; Savoni, Gregory L.; Newell, Kenneth J.

1992-05-01

148

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

149

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

150

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

151

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

152

Math Attitudes of Computer Education and Instructional Technology Students  

ERIC Educational Resources Information Center

Computer Education and Instructional Technology (CEIT) Departments train computer teachers to fill gap of computer instructor in all grades of schools in Turkey. Additionally graduates can also work as instructional technologist or software developer. The curriculum of CEIT departments includes mathematics courses. The aim of this study is to…

Tekerek, Mehmet; Yeniterzi, Betul; Ercan, Orhan

2011-01-01

153

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

154

Software technology for wireless mobile computing  

Microsoft Academic Search

Some of the possibilities and requirements for mobile computing on wireless local area networks {(LANs)} are discussed from the systems software viewpoint. The design of the Student Electronic Notebook {(SEN)} is sketched to provide a partial catalog of problems in building a real system for wireless mobile computing. This project was initiated to investigate the potential of wireless mobile computing

D. Duchamp; S.K. Feiner; G.Q.; Jr. Maguire

1991-01-01

155

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

E-print Network

of computer technology to alter human brains is not withouttechnology will also increasingly be integrated into the body and brain. “and brain operate using the same physical principles, allowing technology

Petrick, Elizabeth

2012-01-01

156

Holography, Entropy and Extra Dimensions  

E-print Network

We show that higher dimensional models (brane worlds) in which the scale of quantum gravity $M_*$ is much smaller than the apparent scale $M_P \\sim 10^{19}$ GeV are in conflict with bounds arising from holography and black hole entropy. The thermodynamic entropy of astrophysical black holes and sub-horizon volumes during big bang nucleosynthesis exceed the relevant bounds unless $M_* > 10^{(4-6)}$ TeV, so a hierarchy relative to the weak scale is unavoidable. We discuss the implications for extra dimensions as well as holography.

Deog Ki Hong; Stephen D. H. Hsu

2004-04-30

157

Higher Spin Holography  

NASA Astrophysics Data System (ADS)

This dissertation splits into two distinct halves. The first half is devoted to the study of the holography of higher spin gauge theory in AdS 3. We present a conjecture that the holographic dual of W N minimal model in a 't Hooft-like large N limit is an unusual "semi-local" higher spin gauge theory on AdS3 x 1. At each point on the S1 lives a copy of three-dimensional Vasiliev theory, that contains an infinite tower of higher spin gauge fields coupled to a single massive complex scalar propagating in AdS3. The Vasiliev theories at different points on the S1 are correlated only through the AdS3 boundary conditions on the massive scalars. All but one single tower of higher spin symmetries are broken by the boundary conditions. This conjecture is checked by comparing tree-level two- and three-point functions, and also one-loop partition functions on both side of the duality. The second half focuses on the holography of higher spin gauge theory in AdS 4. We demonstrate that a supersymmetric and parity violating version of Vasiliev's higher spin gauge theory in AdS4 admits boundary conditions that preserve N = 0,1,2,3,4 or 6 supersymmetries. In particular, we argue that the Vasiliev theory with U( M) Chan-Paton and N = 6 boundary condition is holographically dual to the 2+1 dimensional U(N) k x U(M) -k ABJ theory in the limit of large N, k and finite M. In this system all bulk higher spin fields transform in the adjoint of the U(M) gauge group, whose bulk t'Hooft coupling is M/N. Our picture suggests that the supersymmetric Vasiliev theory can be obtained as a limit of type IIA string theory in AdS4 x CP3, and that the non-Abelian Vasiliev theory at strong bulk 't Hooft coupling smoothly turn into a string field theory. The fundamental string is a singlet bound state of Vasiliev's higher spin particles held together by U(M) gauge interactions.

Chang, Chi-Ming

158

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.

159

Cross-Country Technology Diffusion: The Case of Computers  

Microsoft Academic Search

We use data on imports of computer equipment for a large sample of countries between 1 970 and 1990 to investigate the determinants of computer-technology adoption. We find strong evidence that computer adoption is associated with higher levels of human capital and with manufacturing trade openness vis-a-vis the OECD. We also find evidence that computer adoption is enhanced by high

Francesco Caselli; Wilbur John Coleman II

2001-01-01

160

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

161

Ageing, Learning, and Computer Technology in Australia  

ERIC Educational Resources Information Center

Learning is an important aspect of active ageing, yet older people are not often included in discussions of the issue. Older people vary in their need, desire, and ability to learn, and this is evident in the context of technology. The focus of the data analysis for this paper was on determining the place of learning and technology in active…

Boulton-Lewis, Gillian M.; Buys, Laurie; Lovie-Kitchin, Jan; Barnett, Karen; David, L. Nikki

2007-01-01

162

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

163

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

164

Embedded Data Processor and Portable Computer Technology testbeds  

NASA Technical Reports Server (NTRS)

Attention is given to current activities in the Embedded Data Processor and Portable Computer Technology testbed configurations that are part of the Advanced Data Systems Architectures Testbed at the Information Sciences Division at NASA Ames Research Center. The Embedded Data Processor Testbed evaluates advanced microprocessors for potential use in mission and payload applications within the Space Station Freedom Program. The Portable Computer Technology (PCT) Testbed integrates and demonstrates advanced portable computing devices and data system architectures. The PCT Testbed uses both commercial and custom-developed devices to demonstrate the feasibility of functional expansion and networking for portable computers in flight missions.

Alena, Richard; Liu, Yuan-Kwei; Goforth, Andre; Fernquist, Alan R.

1993-01-01

165

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

166

Computers and Autistic Learners: An Evolving Technology.  

ERIC Educational Resources Information Center

A research and demonstration computer center for severely handicapped autistic children, STEPPE-Lab, which uses computers as an augmentative communication and instructional system, is described. The article first reviews the keyboard, joystick, mouse, and drawing tablet as augmentative devices for helping communication disordered children interact…

Hedbring, Charles

1985-01-01

167

Office of Information Technology Newark Computing Services  

E-print Network

to Windows 7 or 8.1 by April 8th. If your computer hardware meets the minimum requirements, it is recommended 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

Hanson, Stephen José

168

Rainbow holography and its applications  

NASA Astrophysics Data System (ADS)

The general equations of the rainbow holography are deduced. Their analysis makes it possible to offer different methods of the rainbow holographic images production. A new way of using the rainbow holograms as optical elements for effective color illuminating of transparent, specular, and polished objects is proposed. Application fields are the advertising industry, shop windows design, etc.

Vlasov, N. G.; Ivanov, Vladimir S.

1993-09-01

169

Wormholes and entanglement in holography  

NASA Astrophysics Data System (ADS)

In this paper, we consider highly entangled states in theories with a gravity dual, where the entangled degrees of freedom are causally disconnected from each other. Using the basic rules of holography, we argue that there is a nontraversable wormhole in the gravity dual whose geometry encodes the pattern of the entanglement.

Jensen, Kristan; Sonner, Julian

2014-07-01

170

Olivier Dufour Computer technologies to better understanding ecosystem  

E-print Network

Olivier Dufour Computer technologies to better understanding ecosystem birth date: 06, FRANCE olivierlouis.dufour@gmail.com webpage: http of terrestrial biodiversity ref : http://glotin.univ-tln.fr/ Southern University, Var, France 2011 Ecological

Chamroukhi, Faicel

171

Using Computer Technology To Foster Learning for Understanding.  

ERIC Educational Resources Information Center

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. (Contains 30 references.) (Author/YDS)

Van Melle, Elaine; Tomalty, Lewis

2000-01-01

172

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

173

On the use of computation optimization opportunities in computer technologies for applied and computational mathematics problems with prescribed quality characteristics  

NASA Astrophysics Data System (ADS)

The use of various opportunities for computation optimization in computer technologies for applied and computational mathematics problems with prescribed quality characteristics is investigated. More precisely, the choice and determination of computational resources and methods of their efficient use for finding an approximate solution of problems up to prescribed accuracy in a limited amount of processor time are investigated.

Babich, M. D.; Zadiraka, V. K.; Lyudvichenko, V. A.; Sergienko, I. V.

2010-12-01

174

Reviews of computing technology: Software overview  

SciTech Connect

The Savannah River Site Computing Architecture states that the site computing environment will be standards-based, data-driven, and workstation-oriented. Larger server systems deliver needed information to users in a client-server relationship. Goals of the Architecture include utilizing computing resources effectively, maintaining a high level of data integrity, developing a robust infrastructure, and storing data in such a way as to promote accessibility and usability. This document describes the current storage environment at Savannah River Site (SRS) and presents some of the problems that will be faced and strategies that are planned over the next few years.

Hartshorn, W.R.; Johnson, A.L.

1994-01-05

175

Faculty of Computing and Information Technology Department of Robotics and Digital Technology  

E-print Network

Faculty of Computing and Information Technology Department of Robotics and Digital Technology Technical Report 93/13 A Japanese Electronic Dictionary Project (Part 1: The Dictionary Files) J. W. Breen November 30, 1993 Enquiries:­ Technical Report Coordinator Robotics and Digital Technology Monash

Breen, Jim

176

Roadmap: Computer Technology Internet and Multimedia Technology Associate of Applied Business  

E-print Network

Roadmap: Computer Technology ­ Internet and Multimedia Technology ­ Associate of Applied Business or COMT 11004 Survey of Information Technology or COMT 21007 Internet Ethics and Policies 3 MATH 11009 21007 Internet Ethics and Policies or COMT 21036 Web Scripting I 3 Business Electives I 3-4 See note 1

Sheridan, Scott

177

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

178

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

Code of Federal Regulations, 2014 CFR

... 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

179

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

180

Restricted access processor - An application of computer security technology  

NASA Technical Reports Server (NTRS)

This paper describes a security guard device that is currently being developed by Computer Sciences Corporation (CSC). The methods used to provide assurance that the system meets its security requirements include the system architecture, a system security evaluation, and the application of formal and informal verification techniques. The combination of state-of-the-art technology and the incorporation of new verification procedures results in a demonstration of the feasibility of computer security technology for operational applications.

Mcmahon, E. M.

1985-01-01

181

Full custom VLSI - A technology for high performance computing  

NASA Technical Reports Server (NTRS)

Full custom VLSI is presented as a viable technology for addressing the need for the computing capabilities required for the real-time health monitoring of spacecraft systems. This technology presents solutions that cannot be realized with stored program computers or semicustom VLSI; also, it is not dependent on current IC processes. It is argued that, while design time is longer, full custom VLSI produces the fastest and densest VLSI solution and that high density normally also yields low manufacturing costs.

Maki, Gary K.; Whitaker, Sterling R.

1990-01-01

182

Wearable computer technology for dismounted applications  

NASA Astrophysics Data System (ADS)

Small computing devices which rival the compact size of traditional personal digital assistants (PDA) have recently established a market niche. These computing devices are small enough to be considered unobtrusive for humans to wear. The computing devices are also powerful enough to run full multi-tasking general purpose operating systems. This paper will explore the wearable computer information system for dismounted applications recently fielded for ground-based US Air Force use. The environments that the information systems are used in will be reviewed, as well as a description of the net-centric, ground-based warrior. The paper will conclude with a discussion regarding the importance of intuitive, usable, and unobtrusive operator interfaces for dismounted operators.

Daniels, Reginald

2010-04-01

183

Emerging Trends in Technology Education Computer Applications.  

ERIC Educational Resources Information Center

Graphical User Interface (GUI)--and its variant, pen computing--is rapidly replacing older types of operating environments. Despite its heavier demand for processing power, GUI has many advantages. (SK)

Hazari, Sunil I.

1993-01-01

184

Remote metrology by comparative digital holography  

SciTech Connect

A method for the remote comparison of objects with regard to their shape or response to a load is presented. The method allows interferometric sensitivity for comparing objects with different microstructure. In contrast to the well-known incoherent techniques based on inverse fringe projection this new approach uses the coherent optical wave field of the master object as a mask for the illumination of the sample object. The coherent mask is created by digital holography to allow instant access to the complete optical information of the master object at any place desired. The mask is reconstructed by a spatial light modulator (SLM). The optical reconstruction of digital holograms with SLM technology allows modification of reconstructed wavefronts with respect to improvement of image quality, the skilled introduction of additional information about the object (augmented reality), and the alignment of the master and test object.

Baumbach, Torsten; Osten, Wolfgang; Kopylow, Christoph von; Jueptner, Werner

2006-02-10

185

Factors Influencing Cloud-Computing Technology Adoption in Developing Countries  

ERIC Educational Resources Information Center

Adoption of new technology has complicating components both from the selection, as well as decision-making criteria and process. Although new technology such as cloud computing provides great benefits especially to the developing countries, it has challenges that may complicate the selection decision and subsequent adoption process. This study…

Hailu, Alemayehu

2012-01-01

186

Synthesis of regular computational fabrics with ambipolar CNTFET technology  

E-print Network

Synthesis of regular computational fabrics with ambipolar CNTFET technology Michele De Marchi.demarchi, shashikanth.bobba, giovanni.demicheli}@epfl.ch CEA-LETI-MINATEC, 17, Rue des Martyrs, F-38054 Grenoble, France-field controllable polarities are evaluated. We designed regular layouts using these cells using 32nm technology

De Micheli, Giovanni

187

The Future of Mobile Technology and Mobile Wireless Computing  

ERIC Educational Resources Information Center

It is often stated that mobile wireless computing is going to be the next big technology revolution that will grip the world in the same way mobile telephones did in the 1990s. However, while the technology is rapidly improving, the rate of uptake has been lower than expected. This paper describes some of the reasons for this, and discusses some…

Hart, Jim; Hannan, Mike

2004-01-01

188

Visual Impairments. Tech Use Guide: Using Computer Technology.  

ERIC Educational Resources Information Center

This guide describes adaptive technology for reading printed text and producing written material, to assist the student who has a visual impairment. The special technologies discussed include auditory text access, text enlargement, tactile text access, portable notetaking devices, and computer access. The guide concludes with lists of the…

Carr, Annette

189

Beyond Computation: Information Technology, Organizational Transformation and Business Performance  

Microsoft Academic Search

To understand the economic value of computers, one must broaden the definition of both the technology and its impacts. Successful uses of information technology involve substantial changes in business strategy and structure, worker skills, and products and services delivered. Therefore many of the costs and benefits are likely to be severely mismeasured in data based on industry- or economy-wide aggregates.

Lorin M. Hitt

1995-01-01

190

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

191

Information Systems and Technology University of California, Berkeley BERKELEY COMPUTING  

E-print Network

Information Systems and Technology University of California, Berkeley BERKELEY COMPUTING filtering--8 Melvyl-T--8 CourseWeb strategy--10 E-waste--12 Continued on page 3 IST­CCS Director Shel and Communications Information Systems and Technology Summer 2003 / Volume 13, Number 3 University of California

California at Berkeley, University of

192

Roadmap: Applied Engineering Computer Engineering Technology -Bachelor of Science  

E-print Network

-BS-AENG-CET] College of Applied Engineering, Sustainability and Technology Catalog Year: 2013-2014 Page 1 of 2 | Last Year: 2013-2014 Page 2 of 2 | Last Updated: 13-May-13/JS Critical requirements are boldface in shadedRoadmap: Applied Engineering ­ Computer Engineering Technology - Bachelor of Science [AT

Khan, Javed I.

193

Exploring Computer Technology. The Illinois Plan for Industrial Education.  

ERIC Educational Resources Information Center

This guide, which is one in the "Exploration" series of curriculum guides intended to assist junior high and middle school industrial educators in helping their students explore diverse industrial situations and technologies used in industry, deals with exploring computer technology. The following topics are covered in the individual lessons: the…

Illinois State Univ., Normal.

194

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science  

E-print Network

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science CASA-Report 14-10 April 2014 Implicit-IMOR method for index-1 and index-2 linear constant DAEs by N. Banagaaya, G. Ali, W Science Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven, The Netherlands ISSN: 0926

Eindhoven, Technische Universiteit

195

Video and Computer Technologies for Extended-Campus Programming.  

ERIC Educational Resources Information Center

This paper discusses video and computer technologies for extended-campus programming (courses and programs at off-campus sites). The first section provides an overview of the distance education program at the University of Kentucky (UK), and highlights the improved access to graduate and professional programs, advances in technology, funding,…

Sagan, Edgar L.; And Others

196

Single-shot phase-shifting digital holography  

NASA Astrophysics Data System (ADS)

We propose a digital holographic imaging system that is capable of recording/measuring the amplitude and phase of an optical wavefront in a single shot. Based on the principle of digital holography (DH), the proposed system uses a reference beam to interfere with the light field under investigation and digitally records/measures the in-phase and quadrature interference patterns. Single-shot in-phase and quadrature interference pattern recording is made possible by incorporating the technologies widely used in coherent optical communication. Specifically, a free-space optical 90-deg hybrid is employed to measure the complex (real and imaginary) optical field. We have constructed a single-shot phase-shifting digital holography system and experimentally demonstrated its operation.

Zhang, Jing; Xie, Yu; Li, Guifang; Ye, Yutang; Saleh, Bahaa E. A.

2014-11-01

197

Gordon and Mike's ICT Podcast: Cloud Computing Technologies  

NSDL National Science Digital Library

Gordon and Mike's ICT Podcast offers perspectives on the information and communication technologies (ICT) industries from Gordon Snyder and Mike Qaissaunee. In this podcast, cloud computing technologies are discussed. Eleven different related technologies are discussed, including software, security and databases. The running time for this show is 23:26.This podcast is available for direct download in mp3 format from the Libsyn site, or click here to subscribe to the whole series in iTunes.

2011-06-30

198

Direct-to-digital holography and holovision  

DOEpatents

Systems and methods for direct-to-digital holography are described. An apparatus includes a laser; a beamsplitter optically coupled to the laser; a reference beam mirror optically coupled to the beamsplitter; an object optically coupled to the beamsplitter, a focusing lens optically coupled to both the reference beam mirror and the object; and a digital recorder optically coupled to the focusing lens. A reference beam is incident upon the reference beam mirror at a non-normal angle, and the reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form an image. The systems and methods provide advantages in that computer assisted holographic measurements can be made.

Thomas, Clarence E. (Knoxville, TN); Baylor, Larry R. (Knoxville, TN); Hanson, Gregory R. (Clinton, TN); Rasmussen, David A. (Knoxville, TN); Voelkl, Edgar (Oak Ridge, TN); Castracane, James (Albany, NY); Simkulet, Michelle (Latham, NY); Clow, Lawrence (Waterford, NY)

2000-01-01

199

Holography of 3D Flat Cosmological Horizons  

NASA Astrophysics Data System (ADS)

We provide a first derivation of the Bekenstein-Hawking entropy of 3D flat cosmological horizons in terms of the counting of states in a dual field theory. These horizons appear in the flat limit of nonextremal rotating Banados-Teitleboim-Zanelli black holes and are remnants of the inner horizons. They also satisfy the first law of thermodynamics. We study flat holography as a limit of AdS3/CFT2 to semiclassically compute the density of states in the dual theory, which is given by a contraction of a 2D conformal field theory, exactly reproducing the bulk entropy in the limit of large charges. We comment on how the dual theory reproduces the bulk first law and how cosmological bulk excitations are matched with boundary quantum numbers.

Bagchi, Arjun; Detournay, Stéphane; Fareghbal, Reza; Simón, Joan

2013-04-01

200

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.

201

Technological and Research Perspectives of Old-Age Ubiquitous Computing  

Microsoft Academic Search

Technological advances allow networked and context-aware computer systems to be integrated into devices, environments, everyday objects, and garments. The idea is that such smart environments and artifacts are able to perceive the users’ context and activity, anticipate their needs, and act to provide proactive support. Old-age ubiquitous computing has the potential to increase the length of time that both individuals

Antonio Krüger; Albrecht Schmidt; Jörg Müller

2010-01-01

202

"Computer" and "Information and Communication Technology": Students' Culture Specific Interpretations  

ERIC Educational Resources Information Center

Given the use of information and communication technology (ICT) and computer as synonyms in ICT-integration research on the one hand, and the potential problems in doing so on the other, this contribution tries to gain insight in the understanding of the words computer and ICT in different settings. In five different countries (Belgium, Finland,…

Elen, Jan; Clarebout, Geraldine; Sarfo, Frederick Kwaku; Louw, Lambertus Philippus; Poysa-Tarhonen, Johanna; Stassens, Nick

2010-01-01

203

Technion -Israel Institute of Technology Computer Science Department  

E-print Network

Technion - Israel Institute of Technology Computer Science Department The M Algorithm Technion, Haifa 32000 Israel carmel@cs.technion.ac.il shaulm@cs.technion.ac.il Abstract While human players trying to face during the last ve decades is the creation of a computer program that can beat the world

Markovitch, Shaul

204

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.

205

Selecting Software. Tech Use Guide: Using Computer Technology.  

ERIC Educational Resources Information Center

One of nine brief guides for special educators on using computer technology, this guide focuses on the selection of software for use in the special education classroom. Four types of software used for computer assisted instruction are briefly described: tutorials; drill and practice; educational games; and simulations. The increasing use of tool…

Council for Exceptional Children, Reston, VA. Center for Special Education Technology.

206

Development of computer sign language translation technology for deaf people  

Microsoft Academic Search

The paper considers computer sign language translation technology for deaf people. A detailed characteristic of the Russian text analysis stage, including prior semantic and semantic interpretation within the framework of developing a program for Russian text computer sign language translator into colloquial Russian sign language is given. Problems arising at this stage are also emphasized. Peculiarities of the Russian sign

Mikhail G. Grif; Olga O. Korolkova; Yelena A. Demyanenko; Yevgeny B. Tsoy

2011-01-01

207

Computer-Mediated Technology and Transcultural Counselor Education.  

ERIC Educational Resources Information Center

This manuscript traces the history of computer technologies, their applications in mental health settings, and suggests that transcultural counselor educators engage their students in the design of a case-based computer simulation. The avatar-focused simulation offers an unprecedented environment for experimentation in collaborative learning and…

McFadden, John

2000-01-01

208

Atlantic Symposium on Computational Biology and Genome Information Systems & Technology  

E-print Network

1 Atlantic Symposium on Computational Biology and Genome Information Systems & Technology Thursday A Lexical Approach to Text Mining for the Integration of Genomic Information Lauren Harrison and Peter Physical Mapping of Plant Genomes Carol Soderlund, Associate Professor, Dept. of Computer Science, Clemson

Wang, Xiong

209

Opportunities for Computing Technologies to Support Healthy Sleep Behaviors  

E-print Network

Opportunities for Computing Technologies to Support Healthy Sleep Behaviors Eun Kyoung Choe1 and regular exercise. Human-computer interaction (HCI) researchers have recently designed systems to support diet and exercise, but sleep has been relatively under-studied in the HCI community. We conducted

Anderson, Richard

210

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

211

The impact and use of computer technology by the police  

Microsoft Academic Search

Over the past decade there has been a significant growth in the use of computer technology by U.S. police departments. This growth, however, has been at a slower rate than predicted in the early 1970's. Further, when computer applications extend beyond “routine” uses to “nonroutine” efforts, such as resource allocation or computer-aided-dispatch systems where the machine begins to become a

Kent W. Colton; W. Colton

1979-01-01

212

Folding time into space: novel approaches to integral holography  

NASA Astrophysics Data System (ADS)

This paper describes a novel computer technique for holography developed by the author called Speedograms. Using an existing 2-D animation program, this technique creates depth by moving different graphic elements at varying speeds over the screen. This method has the advantage of popular software and is the basis for development of an automated 2-D/3-D printer for photoresist. This paper also describes innovative applications of integral holography, including the skyline of Cologne. In addition, natural phenomena have also been recorded using multiple photographs from a stationary photo camera with the subjects moving horizontally. This way the continuous flow of water in the Rhine was recorded and a steady wind served as the track for a naturalistic hologram in clouds. The use of LCD video projection onto the holographic surface is shown with both recorded and real-time imagery. Future developments will expand on the projection system, with holograms, computer graphics, and real-time video combining in an approach to interactive multimedia holography.

Vila, Doris K.

1993-09-01

213

Electronic data collection using mobile computing technologies  

Microsoft Academic Search

Research has been conducted on a large telecommunications utility to automate one of its important business processes of the utility, that of collecting information on its geographically dispersed network assets, using a Personal Digital Assistant (PDA) and wireless technologies. The results of the pilot implementation for this automated business process have been encouraging and indicate a means to improve the

Rex van Olst; Barry Dwolatzky

214

Using Computer Technology to Teach Thinking  

Microsoft Academic Search

The successful reform of education in America will center on student learning and will bring together three seemingly separate agendas: student outcomes that reflect deep understanding and higher order thinking skills, curriculum that includes well-integrated uses of technology, and professional development for teachers that incorporates the two previously named agendas Each of these initiatives alone has potential to impact education

Jean Tower

1996-01-01

215

Designing Appropriate Computing Technologies for Rural Development  

E-print Network

Government: services & programs: services & programs HealthHealth: informed, consistent care: informed, consistent and evaluating technologydeveloping and evaluating technology Build SolutionBuild Solution CAM: a mobile phone for small loansUse capital for small loans ­ Business, livestock, education, health care, etc

Parikh, Tapan S.

216

Audit and Evaluation of Computer Security. Computer Science and Technology.  

ERIC Educational Resources Information Center

This is a collection of consensus reports, each produced at a session of an invitational workshop sponsored by the National Bureau of Standards. The purpose of the workshop was to explore the state-of-the-art and define appropriate subjects for future research in the audit and evaluation of computer security. Leading experts in the audit and…

Ruthberg, Zella G.

217

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

218

Cloud Computing Technologies Facilitate Earth Research  

NASA Technical Reports Server (NTRS)

Under a Space Act Agreement, NASA partnered with Seattle-based Amazon Web Services to make the agency's climate and Earth science satellite data publicly available on the company's servers. Users can access the data for free, but they can also pay to use Amazon's computing services to analyze and visualize information using the same software available to NASA researchers.

2015-01-01

219

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

220

CACTUS: Calculator and Computer Technology User Service.  

ERIC Educational Resources Information Center

Presents an activity in which students use computer-based spreadsheets to find out how much grain should be added to a chess board when a grain of rice is put on the first square, the amount is doubled for the next square, and the chess board is covered. (ASK)

Hyde, Hartley

1998-01-01

221

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

222

Optimal noise suppression in Fresnel incoherent correlation holography (FINCH) configured for  

E-print Network

Optimal noise suppression in Fresnel incoherent correlation holography (FINCH) configured incoherent correlation holography (FINCH) system is proposed and analyzed. Experimental results holography (FINCH) is a relatively new method of digital holography for recording holograms under incoherent

Rosen, Joseph

223

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

224

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

225

High-intensity x-ray holography: an approach to high-resolution snapshot imaging of biological specimens  

SciTech Connect

The crucial physical and technological issues pertaining to the holographic imaging of biological structures with a short-pulse, high-intensity, high-quantum-energy laser were examined. The limitations of x-ray optics are discussed. Alternative holographic techniques were considered, and it was concluded that far-field Fresnel transform holography (Fraunhofer holography) using a photoresist recording surface is most tractable with near term technology. The hydrodynamic expansion of inhomogeneities within the specimen is discussed. It is shown that expansion is the major source of image blurring. Analytic expressions were derived for the explosion of protein concentrations in an x-ray transparent cytoplasm, compared with numerical calculations, and corrections derived to account for the competitive transport processes by which these inhomogeneities lose energy. It is concluded that for the near term Fresnel transform holography, particularly, far-field or Fraunhofer holography, is more practical than Fourier transform holography. Of the alternative fine grain recording media for use with Fresnel transform holography, a photo-resist is most attractive. For best resolution, exposure times must be limited to a few picoseconds, and this calls for investigation of mechanisms to shutter the laser or gate the recording surface. The best contrast ratio between the nitrogen-bearing polymers (protein and the nucleic acids) and water is between the K-edges of oxygen and nitrogen.

Solem, J.C.

1982-08-01

226

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

227

HOLONET: a network for training holography  

NASA Astrophysics Data System (ADS)

Holography is an optics technique based on wave physics and lasers with several applications at our day life. The production of holograms involves experimental work based on hands-on activities and creativity. All these elements can contribute to the promotion of experimental teaching of optics and training on holography. The hologram itself acting as a final result from a long process of research and study can enable the engagement of high school students on physics and promote the stimulus on optics learning. Taking these assumptions into account a network of schools working on holography was built involving thirty schools from all country. Holography systems were developed and several hands-on activities were constructed. During last sixteen years students are working on laser optics and holography producing different kinds of holograms. This study presents all holography labs implemented at schools and it will analyzed the holography systems and materials developed for students. Training strategy will be discussed and holograms obtained by students will be presented. Results obtained show us that holography can be implemented as a strategy for promoting the learning of optics and it is a particular way to involve students on experimental work and lab research. Results obtained during this study will be presented in detail and analyzed with focus on students performance. Educational results, teachers training, prizes and other positive outcomes will be discussed and compared.

Pombo, Pedro; Santos, Emanuel

2014-07-01

228

Managing and directing innovation in the holography business  

NASA Astrophysics Data System (ADS)

The intellectual property (IP) space associated with core high-tech innovations, such as holography, tends to rapidly expand in many directions as new applications and improvements to the core technology are realized. Patents soon start to quickly fill regions of the IP space to varying densities, often before any commercial product is available. Complicating matters is the fact that the patents typically range wildly in quality and business value for a host of reasons, not the least of which is that many high-tech companies lack an IP strategy designed to drive their R and D and patenting efforts. IP-savvy high-tech companies are relying more and more on some type of IP space analysis to more fully understand the IP landscape in which they do business. However, after an IP space analysis is performed, it needs to be integrated into a larger IP management system driven by an IP strategy. This paper examines the role of a best-practice IP management system in a high-tech business and how it can be used in conjunction with a holography IP space analysis to strategically manage and direct innovation in the holography business.

Gortych, Joseph E.; Abilock, Harold

2006-02-01

229

Schrödinger holography for z < 2  

NASA Astrophysics Data System (ADS)

We investigate holography for asymptotically Schrödinger 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 Schrödinger 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.

Andrade, Tomás; Keeler, Cynthia; Peach, Alex; Ross, Simon F.

2015-02-01

230

Atom interferometers and atom holography  

SciTech Connect

Various techniques of atom manipulation with a binary hologram are discussed and demonstrated experimentally. An atomic beam of metastable neon in the 1s{sub 3} state and a SiN thin film with holes that expresses the transmission function of the hologram are used to demonstrate this technique. The gray-scale holography of atoms is demonstrated for the first time. Other possibilities of holographic manipulation of atoms are also discussed.

Shimizu, Fujio; Mitake, Satoru [Institute for Laser Science and CREST, University of Electro-Communications, Chofu-shi 182-8585 (Japan); Fujita, Jun-ichi [NEC Fundamental Research Laboratories, 34 Miyukigaoka, Tsukuba 305-0841 (Japan); Morinaga, Makoto [Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113 (Japan); Kishimoto, Tetsuo [Institute for Laser Science and CREST, University of Electro-Communications, Chofu-shi 182-8585 (Japan); Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113 (Japan)

1999-06-11

231

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

2014-11-19

232

Technology-Enhanced Management Education: Conceptual Framework and Experiences with Advanced Telecom-Computer Integrated Technology  

Microsoft Academic Search

Education is one of the most relevant domains in which the integration of emerging computer and telecommunication technologies is enabling significant innovations. A prerequisite for this development are appropriate frameworks to guide education professionals in exploiting advanced information and communication technologies to significantly enhance the quality and efficiency of traditional management learning and training methods. This paper describes how such

Albert A. ANGEHRN; Thierry NABETH

233

The Adoption of Grid Computing Technology by Organizations: A Quantitative Study Using Technology Acceptance Model  

ERIC Educational Resources Information Center

Advances in grid technology have enabled some organizations to harness enormous computational power on demand. However, the prediction of widespread adoption of the grid technology has not materialized despite the obvious grid advantages. This situation has encouraged intense efforts to close the research gap in the grid adoption process. In this…

Udoh, Emmanuel E.

2010-01-01

234

Roadmap: Computer Technology Internet and Multimedia Technology Associate of Applied Business  

E-print Network

and milestones designated as critical (in boldface and shaded areas) must be completed in the semester listedRoadmap: Computer Technology ­ Internet and Multimedia Technology ­ Associate of Applied Business to ensure a timely graduation. Kent Core Summary (visit www.kent.edu/catalog/kent-core for course list) Kent

Khan, Javed I.

235

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.

Bagchi, Arjun

2014-01-01

236

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

237

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

238

Impact of new computing systems on computational mechanics and flight-vehicle structures technology  

NASA Technical Reports Server (NTRS)

Advances in computer technology which may have an impact on computational mechanics and flight vehicle structures technology were reviewed. The characteristics of supersystems, highly parallel systems, and small systems are summarized. The interrelations of numerical algorithms and software with parallel architectures are discussed. A scenario for future hardware/software environment and engineering analysis systems is presented. Research areas with potential for improving the effectiveness of analysis methods in the new environment are identified.

Noor, A. K.; Storaasli, O. O.; Fulton, R. E.

1984-01-01

239

Real-world applications for brain-computer interface technology  

Microsoft Academic Search

The mission of the Georgia State University BrainLab is to create and adapt methods of human-computer interaction that will allow brain-computer interface (BCI) technologies to effectively control real-world applications. Most of the existing BCI applications were designed largely for training and demonstration purposes. Our goal is to research ways of transitioning BCI control skills learned in training to real-world scenarios.

Melody M. Moore

2003-01-01

240

The implementation of AI technologies in computer wargames  

NASA Astrophysics Data System (ADS)

Computer wargames involve the most in-depth analysis of general game theory. The enumerated turns of a game like chess are dwarfed by the exponentially larger possibilities of even a simple computer wargame. Implementing challenging AI is computer wargames is an important goal in both the commercial and military environments. In the commercial marketplace, customers demand a challenging AI opponent when they play a computer wargame and are frustrated by a lack of competence on the part of the AI. In the military environment, challenging AI opponents are important for several reasons. A challenging AI opponent will force the military professional to avoid routine or set-piece approaches to situations and cause them to think much deeper about military situations before taking action. A good AI opponent would also include national characteristics of the opponent being simulated, thus providing the military professional with even more of a challenge in planning and approach. Implementing current AI technologies in computer wargames is a technological challenge. The goal is to join the needs of AI in computer wargames with the solutions of current AI technologies. This talk will address several of those issues, possible solutions, and currently unsolved problems.

Tiller, John A.

2004-08-01

241

Seeing differently... Optogenetics, holography, and vision restoration Lecturer: Inna Reutsky-Gefen  

E-print Network

Seeing differently... Optogenetics, holography, and vision restoration Lecturer: Inna Reutsky of the impaired retina that utilizes a new approach recently introduced into neuroscience - Optogenetics. This new-electrode prosthesis. The optogenetic technology that was developed in our laboratory enables stimulation of neuronal

Rimon, Elon

242

Why Biomedical Computing? Computer-assisted medical imaging technology plays a cru-  

E-print Network

Why Biomedical Computing? Computer-assisted medical imaging technology plays a cru- cial role in modern clinical environments, as medical diag- nosis and treatment are increasingly supported by imaging understanding of medical problems in imaging, interventions and diagnosis. Many events take place

Cengarle, María Victoria

243

Computer Technology Training for Prospective Teachers: Computer Attitudes and Perceived Self-Efficacy.  

ERIC Educational Resources Information Center

This longitudinal study conducted at the University of Virginia examined preservice teachers' changes in computer anxiety; perceived usefulness of computer technology; frequency of using word processing, email, spreadsheets, database management, statistical packages, and CD-ROM databases; and perceived self-efficacy. Discusses time effect and…

Milbrath, Ying-Chen L.; Kinzie, Mable B.

2000-01-01

244

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

245

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

246

Welcome to Computing at UNCG! Information Technology Services  

E-print Network

in Jackson Library or the Technology Support Center located in 101 Forney Building. Ethical Use of Computing to copyright-protected materials regardless of whether they are reproduced in digital, electronic, print, or other form. Copyright ownership by members of the University community is addressed in the Copyright

Saidak, Filip

247

Computer Technology Human Labor and Long-Run Economic Growth  

Microsoft Academic Search

Abstract Over the coming century, computer technology is likely to become capable of reproducing many,of the skills now performed by human labor. This paper describes three models of the aggregate economic changes that occur when capital becomes,capable of performing human work skills. The basic model, with a single sector and homogeneous labor, pro- jects output growth rates over the next

Stuart W. Elliott; Ashish Arora; Harvey Brooks; Peter Cappelli; Hirsh Cohen; Richard Cyert; Richard Day; Amanda Ellsworth; Gary Fields; Jon Fincham; Robert Gibbons; Claudia Goldin; Mark Kamlet; Lawrence Katz; Rachel Kranton; Lester Lave; Frank Levy; Richard Murnane; Paul Osterman; Arnold Packer; Michael Piore; Paul Romer

248

Adult Literacy, Computer Technology, and the Hearing Impaired.  

ERIC Educational Resources Information Center

This paper looks at computer technology's current and potential role in developing literacy in hearing impaired (HI) adults. First, the paper considers findings of adult literacy research including the national impact of illiteracy, functional literacy, communication and thinking skills, the whole language approach, the process approach to…

Askov, Eunice N.; And Others

249

ISE 511L : COMPUTER-AIDED MANUFACTURING (ADVANCED MANUFACTURING TECHNOLOGY)  

E-print Network

Matlab Demo Matlab tutorial Matlab links 2 Introduction to Computer-Aided On-Line Quality Control Machine @ KAP 134 CONTACT Satish Bukkapatnam Ext: 09549 Daniel J. Epstein Industrial and Systems Engineering. The focus will be on the modeling and sensing technologies for real-time control of manufacturing operations

Bukkapatnam, Satish T.S.

250

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science  

E-print Network

carbonation reaction mechanism, namely CO2(g aq) + Ca(OH)2(s aq) CaCO3(aq s) + H2O. (1) In o and Applications Department of Mathematics and Computer Science Eindhoven University of Technology P.O. Box 513 Muntean December 19, 2011 Abstract We investigate the fast-reaction asymptotics for a one

Eindhoven, Technische Universiteit

251

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

252

The Intel Science and Technology Center for Cloud Computing  

E-print Network

different types of devices, be it a notebook computer, smartphone, tablet, or others. Some examples include using online storage when sharing videos or photos, engaging in social networks, and using online Economics, Principled Technology, expert interviews, Bain analysis. Huge potential benefits Innovation

253

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. ...

254

The pedagogy-technology interface in Computer Assisted Pronunciation Training  

Microsoft Academic Search

In this paper, we examine the relationship between pedagogy and technology in Computer Assisted Pronunciation Training (CAPT) courseware. First, we will analyse available literature on second language pronunciation teaching and learning in order to derive some general guidelines for effective training. Second, we will present an appraisal of various CAPT systems with a view to establishing whether they meet pedagogical

Ambra Neri; Catia Cucchiarini; Helmer Strik; L. W. J. Boves

2002-01-01

255

Information Systems and Technology University of California, Berkeley BERKELEY COMPUTING  

E-print Network

Information Systems and Technology University of California, Berkeley BERKELEY COMPUTING & COMMUNICATIONS Volume 13, Number 1 Winter 2003 IN THIS ISSUE: Web-enabled PowerPoint--5 SAN bulk storage--9 i "Tele- BEARS phone system: Planning for retirement" in this issue.) Piracy and privacy: Critical network

California at Berkeley, University of

256

Charitable technologies: opportunities for collaborative computing in nonprofit fundraising  

Microsoft Academic Search

This paper presents research analyzing the role of computational technology in the domain of nonprofit fundraising. Nonprofits are a cornerstone of many societies and are especially prominent in the United States, where $295 billion, or slightly more than 2% of the U.S. Gross Domestic Product (i.e. total national revenue), was directed toward charitable causes in 2006. Nonprofits afford many worthwhile

Jeremy Goecks; Amy Voida; Stephen Voida; Elizabeth D. Mynatt

2008-01-01

257

Competitive Healthcare Delivery: Involving Medical Technology of Computer Intelligence  

Microsoft Academic Search

Rising cost and increasing expectation from patients (consumers) have caused health care planners to seek ways in improving efficiency, while striking a balance with the quality of services offered. Consequently several successful health- management organizations apply advanced computer technology as the catalyst for a whole new set of parameters for product design, development and operation to achieve excellence in their

Khong Poh Wah; Dhanjoo GHISTA

2004-01-01

258

DarmstadtUniversityofTechnology ComputerArchitectureGroup  

E-print Network

for a Cellular Automaton with Moving Creatures FB Informatik FG Rechnerarchitektur Mathias Halbach Rolf Hoffmann;DarmstadtUniversityofTechnology ComputerArchitectureGroup 2 Creatures and the Environment Challenge: Find the best behaviour of moving creatures automatically. Question in detail: n creatures are moving around

Hoffmann, Rolf

259

Computer Software for Forestry Technology Curricula. Final Report.  

ERIC Educational Resources Information Center

Since microcomputers are being used more and more frequently in the forest products industry in the Pacific Northwest, Green River Community College conducted a project to search for BASIC language computer programs pertaining to forestry, and when possible, to adapt such software for use in teaching forestry technology. The search for applicable…

Watson, Roy C.; Scobie, Walter R.

260

Computational Structures Technology for Airframes and Propulsion Systems  

NASA Technical Reports Server (NTRS)

This conference publication contains the presentations and discussions from the joint University of Virginia (UVA)/NASA Workshops. The presentations included NASA Headquarters perspectives on High Speed Civil Transport (HSCT), goals and objectives of the UVA Center for Computational Structures Technology (CST), NASA and Air Force CST activities, CST activities for airframes and propulsion systems in industry, and CST activities at Sandia National Laboratory.

Noor, Ahmed K. (compiler); Housner, Jerrold M. (compiler); Starnes, James H., Jr. (compiler); Hopkins, Dale A. (compiler); Chamis, Christos C. (compiler)

1992-01-01

261

Georgia Institute of Technology School of Electrical and Computer Engineering  

E-print Network

Georgia Institute of Technology School of Electrical and Computer Engineering ECE 4435 Op Amp into pink noise would to be to drive the impedance with a current source. The Howland current pump. The textbook never mentions this very undesirable feature. The only current source circuit in the book which

Leach Jr.,W. Marshall

262

Georgia Institute of Technology School of Electrical and Computer Engineering  

E-print Network

current source circuit in the book which will drive a grounded load that doesn't have the undesirableGeorgia Institute of Technology School of Electrical and Computer Engineering ECE 4435 Op Amp the desired impedance. One way to convert the white noise into pink noise would to be to drive the impedance

Leach Jr.,W. Marshall

263

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

264

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

265

Computer Account Request Form ETSU Office of Information Technology  

E-print Network

requesting that a Solaris operating system account with the name __________________ be created on any system owned, operated and/or maintained by ETSU in order to protect the integrity and securityComputer Account Request Form ETSU Office of Information Technology 424 Roy S. Nicks Hall, Box

Karsai, Istvan

266

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

267

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

268

girl-tech.jpggirl-tech.jpg Computing and Technology  

E-print Network

girl-tech.jpggirl-tech.jpg Computing and Technology Conference for Her SPONSORSHIP OPPORTUNITIES organized specifically for high school girls from grades eight to twelve, with the objective of fostering, Sara Adineh at sadineh@sfu.ca + #12;3 + Benefits v Inspire high school girls to follow

Hell, Pavol

269

Introduction to CAD/Computers. High-Technology Training Module.  

ERIC Educational Resources Information Center

This learning module for an eighth-grade introductory technology course is designed to help teachers introduce students to computer-assisted design (CAD) in a communications unit on graphics. The module contains a module objective and five specific objectives, a content outline, suggested instructor methodology, student activities, a list of six…

Lockerby, Hugh

270

Roadmap: Technical and Applied Studies Computer Technology Internet/Multimedia  

E-print Network

Internet/Multimedia ­ Bachelor of Technical and Applied Studies [RE-BTAS-TAS-CTIM] Regional College CatalogRoadmap: Technical and Applied Studies ­ Computer Technology Internet/Multimedia ­ Bachelor of Technical and Applied Studies [RE-BTAS-TAS-CTIM] Regional College Catalog Year: 2012-2013 Page 1 of 3 | Last

Sheridan, Scott

271

Four-stage computational technology with adaptive numerical methods for computational aerodynamics  

NASA Astrophysics Data System (ADS)

Computational aerodynamics is a key technology in aircraft design which is ahead of physical experiment and complements it. Of course all three components of computational modeling are actively developed: mathematical models of real aerodynamic processes, numerical algorithms, and high-performance computing. The most impressive progress has been made in the field of computing, though with a considerable complication of computer architecture. Numerical algorithms are developed more conservative. More precisely, they are offered and theoretically justified for more simple mathematical problems. Nevertheless, computational mathematics now has amassed a whole palette of numerical algorithms that can provide acceptable accuracy and interface between modern mathematical models in aerodynamics and high-performance computers. A significant step in this direction was the European Project ADIGMA whose positive experience will be used in International Project TRISTAM for further movement in the field of computational technologies for aerodynamics. This paper gives a general overview of objectives and approaches intended to use and a description of the recommended four-stage computer technology.

Shaydurov, V.; Liu, T.; Zheng, Z.

2012-10-01

272

Overview of European technology in computers, telecommunications, and electronics  

NASA Astrophysics Data System (ADS)

The emergence of the personal computer, the growing use of distributed systems, and the increasing demand for supercomputers and mini-supercomputers are causing a profound impact on the European computer market. An equally profound development in telecommunications is the integration of voice, data, and images in the public network systems - the Integrated Service Digital Network (ISDN). The programs being mounted in Europe to meet the challenges of these technologies are described. The Europe-wide trends and actions with respect to computers, telecommunications, and microelectronics are discussed, and the major European collaborative programs in these fields are described. Specific attention is given to the European Strategic Programme for Research and Development in Information (ESPRIT); Research in Advanced Communications for Europe (RACE); European Research Coordination Agency (Eureka) programs; Joint European Submicron Silicon Initiative (JESSI); and the recently combined programs Basic Research Industrial Technologies in Europe/European Research in Advanced Materials (BRITE/EURAM).

Blackburn, J. F.

1990-05-01

273

Damage Detection Using Holography and Interferometry  

NASA Technical Reports Server (NTRS)

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

274

Holography with standing surface plasma waves  

NASA Technical Reports Server (NTRS)

Holography with standing surface plasma waves, where both reference and object beams propagate in opposite directions, has been investigated using an Al reflection grating coated with evaporated As2S3 layers. The image, which appears only for p-polarization and at certain critical angles, is enhanced by the Lippman-Bragg effect and by an increase in intensity over ordinary holography approximately equal to the absolute value of the real part of the dielectric constant for Al. Also considered is holography with object light alone in photoresist layers, using the beam-splitting properties of the grating.

Cowan, J. J.

1974-01-01

275

Artistic Representation with Pulsed Holography  

NASA Astrophysics Data System (ADS)

This thesis describes artistic representation through pulsed holography. One of the prevalent practical problems in making holograms is object movement. Any movement of the object or film, including movement caused by acoustic vibration, has the same fatal results. One way of reducing the chance of movement is by ensuring that the exposure is very quick; using a pulsed laser can fulfill this objective. The attractiveness of using pulsed laser is based on the variety of materials or objects that can be recorded (e.g., liquid material or instantaneous scene of a moving object). One of the most interesting points about pulsed holograms is that some reconstructed images present us with completely different views of the real world. For example, the holographic image of liquid material does not appear fluid; it looks like a piece of hard glass that would produce a sharp sound upon tapping. In everyday life, we are unfamiliar with such an instantaneous scene. On the other hand, soft-textured materials such as a feather or wool differ from liquids when observed through holography. Using a pulsed hologram, we can sense the soft touch of the object or material with the help of realistic three-dimensional (3-D) images. The images allow us to realize the sense of touch in a way that resembles touching real objects. I had the opportunity to use a pulsed ruby laser soon after I started to work in the field of holography in 1979. Since then, I have made pulsed holograms of activities, including pouring water, breaking eggs, blowing soap bubbles, and scattering feathers and popcorn. I have also created holographic art with materials and objects, such as silk fiber, fabric, balloons, glass, flowers, and even the human body. Whenever I create art, I like to present the spectator with a new experience in perception. Therefore, I would like to introduce my experimental artwork through those pulsed holograms.

Ishii, S.

2013-02-01

276

Computer Technology in Eastern European Countries and the Former Soviet Union: An Interpretative Bibliography.  

ERIC Educational Resources Information Center

Presents an annotated bibliography of 44 information sources on computer technology in Eastern Europe. Topics addressed include the history of computer technology in former Soviet Bloc countries; computer use in the economic, military, and educational sectors; information technology and its effect on society; and technology transfer and East-West…

Jankowska, Maria Anna

1993-01-01

277

Seismic Holography of Solar Activity  

NASA Technical Reports Server (NTRS)

The basic goal of the project was to extend holographic seismic imaging techniques developed under a previous NASA contract, and to incorporate phase diagnostics. Phase-sensitive imaging gives us a powerful probe of local thermal and Doppler perturbations in active region subphotospheres, allowing us to map thermal structure and flows associated with "acoustic moats" and "acoustic glories". These remarkable features were discovered during our work, by applying simple acoustic power holography to active regions. Included in the original project statement was an effort to obtain the first seismic images of active regions on the Sun's far surface.

Lindsey, Charles

2000-01-01

278

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

279

Entanglement entropy in Galilean conformal field theories and flat holography  

E-print Network

We present the analytical calculation of entanglement entropy for a class of two dimensional field theories governed by the symmetries of the Galilean conformal algebra, thus providing a rare example of such an exact computation. These field theories are the putative holographic duals to theories of gravity in three-dimensional asymptotically flat spacetimes. We provide a check of our field theory answers by an analysis of geodesics. We also exploit the Chern-Simons formulation of three-dimensional gravity and adapt recent proposals of calculating entanglement entropy by Wilson lines in this context to find an independent confirmation of our results from holography.

Arjun Bagchi; Rudranil Basu; Daniel Grumiller; Max Riegler

2014-10-15

280

Entanglement Entropy in Galilean Conformal Field Theories and Flat Holography  

NASA Astrophysics Data System (ADS)

We present the analytical calculation of entanglement entropy for a class of two-dimensional field theories governed by the symmetries of the Galilean conformal algebra, thus providing a rare example of such an exact computation. These field theories are the putative holographic duals to theories of gravity in three-dimensional asymptotically flat spacetimes. We provide a check of our field theory answers by an analysis of geodesics. We also exploit the Chern-Simons formulation of three-dimensional gravity and adapt recent proposals of calculating entanglement entropy by Wilson lines in this context to find an independent confirmation of our results from holography.

Bagchi, Arjun; Basu, Rudranil; Grumiller, Daniel; Riegler, Max

2015-03-01

281

Entanglement entropy in galilean conformal field theories and flat holography.  

PubMed

We present the analytical calculation of entanglement entropy for a class of two-dimensional field theories governed by the symmetries of the Galilean conformal algebra, thus providing a rare example of such an exact computation. These field theories are the putative holographic duals to theories of gravity in three-dimensional asymptotically flat spacetimes. We provide a check of our field theory answers by an analysis of geodesics. We also exploit the Chern-Simons formulation of three-dimensional gravity and adapt recent proposals of calculating entanglement entropy by Wilson lines in this context to find an independent confirmation of our results from holography. PMID:25839258

Bagchi, Arjun; Basu, Rudranil; Grumiller, Daniel; Riegler, Max

2015-03-20

282

Optical encryption of three-dimensional information with digital holography  

NASA Astrophysics Data System (ADS)

An encryption method combining optical digital holography with digital decryption on computer is proposed, which avoid the precise setup of optical devices. A digital hologram of three-dimensional (3D) object and a hologram of key information are recorded by optical method in the encryption process. The 3D object is reconstructed by filtering in spectrum domain and simple numerical calculation. The quality of reconstructed object is improved by reducing speckle noise. The robustness against occlusion and noise attacks of the system has also been analyzed. Optical experiments results are presented.

Liu, Ying-hong; Jin, Wei-min; Yang, Xin

2014-11-01

283

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

284

National Energy Research Scientific Computing Center (NERSC): Advancing the frontiers of computational science and technology  

SciTech Connect

National Energy Research Scientific Computing Center (NERSC) provides researchers with high-performance computing tools to tackle science`s biggest and most challenging problems. Founded in 1974 by DOE/ER, the Controlled Thermonuclear Research Computer Center was the first unclassified supercomputer center and was the model for those that followed. Over the years the center`s name was changed to the National Magnetic Fusion Energy Computer Center and then to NERSC; it was relocated to LBNL. NERSC, one of the largest unclassified scientific computing resources in the world, is the principal provider of general-purpose computing services to DOE/ER programs: Magnetic Fusion Energy, High Energy and Nuclear Physics, Basic Energy Sciences, Health and Environmental Research, and the Office of Computational and Technology Research. NERSC users are a diverse community located throughout US and in several foreign countries. This brochure describes: the NERSC advantage, its computational resources and services, future technologies, scientific resources, and computational science of scale (interdisciplinary research over a decade or longer; examples: combustion in engines, waste management chemistry, global climate change modeling).

Hules, J. [ed.

1996-11-01

285

Cloud computing and patient engagement: leveraging available technology.  

PubMed

Cloud computing technology has the potential to transform medical practices and improve patient engagement and quality of care. However, issues such as privacy and security and "fit" can make incorporation of the cloud an intimidating decision for many physicians. This article summarizes the four most common types of clouds and discusses their ideal uses, how they engage patients, and how they improve the quality of care offered. This technology also can be used to meet Meaningful Use requirements 1 and 2; and, if speculation is correct, the cloud will provide the necessary support needed for Meaningful Use 3 as well. PMID:25807597

Noblin, Alice; Cortelyou-Ward, Kendall; Servan, Rosa M

2014-01-01

286

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.

Dave Barnes

287

Digital spatially incoherent Fresnel holography Joseph Rosen*  

E-print Network

such as outdoor and astronomical holography1 and fluorescence holographic micro- scopy.2 The oldest methods holographic photography based on correlation without movement between objects and FZPs. However, their process

Rosen, Joseph

288

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

289

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

290

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

291

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

292

Computer-Based Learning: The Key 'Technological Multiplier' for Technology Transfer.  

ERIC Educational Resources Information Center

The use of computer-based learning (CBL) is discussed. The author examines the appropriate use of the technology; its cost; identifying the best potential applications of CBL; and the use of CBL by major airlines, oil companies, universities, manufacturers, and government. (CT)

Reynolds, Angus

1982-01-01

293

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.

294

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

295

Computer-assisted liver surgery: clinical applications and technological trends.  

PubMed

Oncological liver surgery and interventions aim for removal of tumor tissue while preserving a sufficient amount of functional tissue to ensure organ regeneration. This requires detailed understanding of the patient-specific internal organ anatomy (blood vessel system, bile ducts, tumor location). The introduction of computer support in the surgical process enhances anatomical orientation through patient-specific 3D visualization and enables precise reproduction of planned surgical strategies though stereotactic navigation technology. This article provides clinical background information on indications and techniques for the treatment of liver tumors, reviews the technological contributions addressing the problem of organ motion during navigated surgery on a deforming organ, and finally presents an overview of the clinical experience in computer-assisted liver surgery and interventions. The review concludes that several clinically applicable solutions for computer aided liver surgery are available and small-scale clinical trials have been performed. Further developments will be required more accurate and faster handling of organ deformation and large clinical studies will be required for demonstrating the benefits of computer aided liver surgery. PMID:22694200

Peterhans, Matthias; Oliveira, Thiago; Banz, Vanessa; Candinas, Daniel; Weber, Stefan

2012-01-01

296

An Overview of Quantum Computing for Technology Managers  

E-print Network

Faster algorithms, novel cryptographic mechanisms, and alternative methods of communication become possible when the model underlying information and computation changes from a classical mechanical model to a quantum mechanical one. Quantum algorithms perform a select set of tasks vastly more efficiently than any classical algorithm, but for many tasks it has been proved that quantum algorithms provide no advantage. The breadth of quantum computing applications is still being explored. Major application areas include security and the many fields that would benefit from efficient quantum simulation. The quantum information processing viewpoint provides insight into classical algorithmic issues as well as a deeper understanding of entanglement and other non-classical aspects of quantum physics. This overview is aimed at technology managers who wish to gain a high level understanding of quantum information processing, particularly quantum computing.

Eleanor G. Rieffel

2008-09-26

297

Shallow depth subsurface imaging with microwave holography  

NASA Astrophysics Data System (ADS)

In this paper, microwave holography is considered as a tool to obtain high resolution images of shallowly buried objects. Signal acquisition is performed at multiple frequencies on a grid using a two-dimensional mechanical scanner moving a single transceiver over an area of interest in close proximity to the surface. The described FFT-based reconstruction technique is used to obtain a stack of plan view images each using only one selected frequency from the operating waveband of the radar. The extent of a synthetically-formed aperture and the signal wavelength define the plan view resolution, which at sounding frequencies near 7 GHz amounts to 2 cm. The system has a short depth of focus which allows easy selection of proper focusing plane. The small distance from the buried objects to the antenna does not prevent recording of clean images due to multiple reflections (as happens with impulse radars). The description of the system hardware and signal processing technique is illustrated using experiments conducted in dry sand. The microwave images of inert anti-personnel mines are demonstrated as examples. The images allow target discrimination based on the same visually-discernible small features that a human observer would employ. The demonstrated technology shows promise for modification to meet the specific practical needs required for humanitarian demining or in multi-sensor survey systems.

Zhuravlev, Andrei; Ivashov, Sergey; Razevig, Vladimir; Vasiliev, Igor; Bechtel, Timothy

2014-05-01

298

Micro-optical elements in holography  

NASA Astrophysics Data System (ADS)

Modern optical instrumentation increasingly requires miniaturization of the devices used, as is the case, e.g., in the field of endoscopy. The combination of such technology with holography offers advantages such as 3-D documentation and display with the possibility of large magnification a posteriori as well as metrology in form of holographic interferometry of objects with difficult optical access. Miniaturized holographic instrumentation requires small illumination and imaging systems, as well as minute recoding devices. As could be demonstrated, these requirements can be met by introduction of micro-optical elements. The use of (single-mode) optical fibers offers easy handling and flexibility. In particular, new single-mode imaging fiber bundles show improved performance data (high lateral resolution, low speckle noise, and low mode interaction) at submillimeter diameters. Assembled gradient- index rod lenses commonly are used for submillimeter imaging systems. In holographic endoscopy, speckle noise caused by these small limiting apertures can be reduced by using such a gradient-index imaging system simultaneously for both imaging and illumination. The use of electro-optical crystals opens the possibility of developing a minute holographic storage device for in-site recording, reconstruction, and erasure with fast repetition rate.

von Bally, Gert; Dirksen, Dieter; Zou, Yunlu

1991-09-01

299

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

2010-08-11

300

The Influence of Computer Technology Learning Program on Attitudes toward Computers and Self-Esteem among Arab Dropout Youth.  

ERIC Educational Resources Information Center

Describes a study that examined the attitudes of Arab dropout youth in Israel toward the use of computer technology and the influence of this use on their self-esteem. Results supported the assumptions that exposure to computer technology would change the attitudes of dropout adolescents toward computers to positive ones. (Contains 43 references.)…

Romi, Shlomo; Zoabi, Houssien

2003-01-01

301

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

302

Try/CATCH (Computing and Technology Conference for Her) Women In Computing Science  

E-print Network

/CATCH is a one-day event organized specifically for all high school girls school girls to learn about the latest innovations in technology and see where is to encourage high school girls to take an interest in computing science. Girls

Hell, Pavol

303

Unruh effect and Holography  

E-print Network

We study the Unruh effect on the dynamics of quarks and mesons in the context of AdS/CFT correspondence. We adopt an AdS metric with the boundary Rindler edge extending into a bulk Rindler-like horizon, which yields the thermodynamics with Unruh temperature verified by computing the boundary stress tensor. We then embed in it the probe fundamental string and D7 brane which are dual to the quark and meson in the Unruh vacuum, respectively. Using the standard procedure of holographic renormalization, we calculate the chiral condensate, and also the spectral functions for both quarks and mesons. From these, we extract the corresponding strength of random force of the Langevin dynamics and observe that it can characterize the phase transition of meson melting. We find most of the dynamical features are qualitatively similar to the ones in the thermal bath dual to the AdS black hole background, though could be quite different quantitatively.

Hirayama, Takayuki; Kawamoto, Shoichi; Lin, Feng-Li

2010-01-01

304

Image enhancement by holography.  

NASA Technical Reports Server (NTRS)

The speed of the holographic image deblurring method has recently been further enhanced by a new speed in the realization of the powerful holographic image-deblurring filter. The filter makes it possible to carry out the deblurring, in the optical computer used, in times of the order of one second. The experimental achievements using the holographic image-enhancement method are illustrated with examples ranging from out-of-focus or motion-blurred photographs, including 'amateur' photos recorded on Polaroid film, to the sharpening of the best available electron micrographs of viruses. Images recorded with X-rays, notably from rocket-borne photos of the sun, and out-of-focus photographs from cameras in NASA satellites have been similarly deblurred.

Stroke, G. W.

1973-01-01

305

Ultra wide band 3-D cross section (RCS) holography  

SciTech Connect

Ultra wide band impulse holography is an exciting new concept for predictive radar cross section (RCS) evaluation employing near-field measurements. Reconstruction of the near-field hologram data maps the target`s scattering areas, and uniquely identifies the ``hot spot`` locations on the target. In addition, the target and calibration sphere`s plane wave angular spectrums are computed (via digital algorithm) and used to generate the target`s far-field RCS values in three dimensions for each frequency component in the impulse. Thin and thick targets are defined in terms of their near-field amplitude variations in range. Range gating and computer holographic techniques are applied to correct these variations. Preliminary experimental results on various targets verify the concept of RCS holography. The unique 3-D presentation (i.e., typically containing 524,288 RCS values for a 1024 {times} 512 sampled aperture for every frequency component) illustrates the efficacy of target recognition in terms of its far-field plane wave angular spectrum image. RCS images can then be viewed at different angles for target recognition, etc.

Collins, H.D.; Hall, T.E.

1992-07-01

306

Ultra wide band 3-D cross section (RCS) holography  

SciTech Connect

Ultra wide band impulse holography is an exciting new concept for predictive radar cross section (RCS) evaluation employing near-field measurements. Reconstruction of the near-field hologram data maps the target's scattering areas, and uniquely identifies the hot spot'' locations on the target. In addition, the target and calibration sphere's plane wave angular spectrums are computed (via digital algorithm) and used to generate the target's far-field RCS values in three dimensions for each frequency component in the impulse. Thin and thick targets are defined in terms of their near-field amplitude variations in range. Range gating and computer holographic techniques are applied to correct these variations. Preliminary experimental results on various targets verify the concept of RCS holography. The unique 3-D presentation (i.e., typically containing 524,288 RCS values for a 1024 {times} 512 sampled aperture for every frequency component) illustrates the efficacy of target recognition in terms of its far-field plane wave angular spectrum image. RCS images can then be viewed at different angles for target recognition, etc.

Collins, H.D.; Hall, T.E.

1992-07-01

307

Quantum Decoherence with Holography  

E-print Network

Quantum decoherence is the loss of a system's purity due to its interaction with the surrounding environment. Via the AdS/CFT correspondence, we study how a system decoheres when its environment is a strongly-coupled theory. In the Feynman-Vernon formalism, we compute the influence functional holographically by relating it to the generating function of Schwinger-Keldysh propagators and thereby obtain the dynamics of the system's density matrix. We present two exactly solvable examples: (1) a straight string in a BTZ black hole and (2) a scalar probe in AdS$_5$. We prepare an initial state that mimics Schr\\"odinger's cat and identify different stages of its decoherence process using the time-scaling behaviors of R\\'enyi entropy. We also relate decoherence to local quantum quenches, and by comparing the time evolution behaviors of the Wigner function and R\\'enyi entropy we demonstrate that the relaxation of local quantum excitations leads to the collapse of its wave-function.

Shih-Hao Ho; Wei Li; Feng-Li Lin; Bo Ning

2014-10-21

308

Computer technology applications in industrial and organizational psychology.  

PubMed

This article reviews computer applications developed and utilized by industrial-organizational (I-O) psychologists, both in practice and in research. A primary emphasis is on applications developed for Internet usage, because this "network of networks" changes the way I-O psychologists work. The review focuses on traditional and emerging topics in I-O psychology. The first topic involves information technology applications in measurement, defined broadly across levels of analysis (persons, groups, organizations) and domains (abilities, personality, attitudes). Discussion then focuses on individual learning at work, both in formal training and in coping with continual automation of work. A section on job analysis follows, illustrating the role of computers and the Internet in studying jobs. Shifting focus to the group level of analysis, we briefly review how information technology is being used to understand and support cooperative work. Finally, special emphasis is given to the emerging "third discipline" in I-O psychology research-computational modeling of behavioral events in organizations. Throughout this review, themes of innovation and dissemination underlie a continuum between research and practice. The review concludes by setting a framework for I-O psychology in a computerized and networked world. PMID:12216695

Crespin, Timothy R; Austin, James T

2002-08-01

309

Schrödinger holography with z = 2  

NASA Astrophysics Data System (ADS)

We investigate holography for asymptotically Schrödinger spacetimes, using a frame formalism based on the anisotropic scaling symmetry. We build on our previous work on z\\lt 2 to propose a dictionary for z = 2. For z = 2, the scaling symmetry does not act on the additional null direction, which implies that in our dictionary it does not correspond to one of the field theory directions. This is significantly different from previous analyses based on viewing Schrödinger as a deformation of AdS. We study this dictionary in the linearized theory and in an asymptotic expansion. We show that a solution exists in an asymptotic expansion for arbitrary sources for the relevant operators in the stress energy complex.

Andrade, Tomás; Keeler, Cynthia; Peach, Alex; Ross, Simon F.

2015-04-01

310

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

311

Schrödinger Holography with $z=2$  

E-print Network

We investigate holography for asymptotically Schr\\"odinger spacetimes, using a frame formalism based on the anisotropic scaling symmetry. We build on our previous work on $z<2$ to propose a dictionary for $z=2$. For $z=2$, the scaling symmetry does not act on the additional null direction, which implies that in our dictionary it does not correspond to one of the field theory directions. This is significantly different from previous analyses based on viewing Schr\\"odinger as a deformation of AdS. We study this dictionary in the linearised theory and in an asymptotic expansion. We show that a solution exists in an asymptotic expansion for arbitrary sources for the relevant operators in the stress energy complex.

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

2015-01-08

312

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

313

An empirical study of technological pressure in the personal computer technology system  

Microsoft Academic Search

This paper studies the co-evolution of the GPU (graphics processing unit) and PC (personal computer) game sub-systems, with respect to graphics performance delivered to end-users during game play. Employing the concept of the reverse salient - a component which trails in technological performance and thus hinders potential system-wide development - the paper develops time-gap and performance-gap measures of reverse salience

Ozgur Dedehayir

2008-01-01

314

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

2002-09-11

315

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

316

Fluidic technology: adding control, computation, and sensing capability to microfluidics  

NASA Astrophysics Data System (ADS)

This paper presents an overview of fluidic technology - a technology that provides an additional dimension to conventional microfluidic technology by adding sensing, computation (both analog and digital) and control. The US Army Diamond Ordnance Fuze Labs officially recognized fluidics as a comprehensive technology comparable to electronics with its announcement in 1959. Because fluidic elements have very few or no moving parts the technology provides significant operational advantages in harsh environments (EMI, radiation, high temperature and vibration). It also offers advantages when dealing with fluid variables (flow, pressure, density, viscosity, etc.) by eliminating the need for interfaces. With the elimination of the inertia and friction associated with moving parts there are even greater advantages as a result of higher speed of operation. Where mechanical and micromechanical devices may be limited to only hundreds of hertz true microfluidic systems can operate at tens of thousands of hertz. We discuss the fundamental principles of jet deflection amplification and vortex modulation and present circuit building blocks such as the laminar proportional amplifier, vortex valve, oscillators, and positive-feedback digital components. However, most importantly, we present and discuss three specific applications illustrating the power of fluidics in microfluidics and MEMS. These are: a gas analyzer-on-a-chip, capable of simultaneous analysis of multiple gas mixtures with clinical accuracies; an intermittent oxygen delivery system that provides supplemental oxygen to ambulatory patients through a nasal cannula; and, an array of vortex microvalves capable of controlling propellants for micropropulsion systems or for the temporal and spatial modulation of fuel for the optimal control of gas turbine combustors. A sampling of other fluidic in microfluidic application are mentioned to include pressure and acoustic amplification (a kosher public address system is referenced), active noise cancellation for aircraft engines and passenger compartments, optical-pneumatic transduction in optical fiber missile controls and natural gas processing, angular rate sensing, and microcytometry for cellular processing. Fluidics may be the enabling technology for many as yet undeveloped applications, particularly when recent advances micro-fabrication are taken advantage of.

Drzewiecki, Tadeusz M.; Macia, Narciso F.

2003-04-01

317

Technological Metaphors and Moral Education: The Hacker Ethic and the Computational Experience  

ERIC Educational Resources Information Center

This essay is an attempt to understand how technological metaphors, particularly computer metaphors, are relevant to moral education. After discussing various types of technological metaphors, it is argued that technological metaphors enter moral thought through their "functional descriptions." The computer metaphor is then explored by turning to…

Warnick, Bryan R.

2004-01-01

318

Important Advances in Technology and Unique Applications to Cardiovascular Computed Tomography  

PubMed Central

For the past decade, multidetector cardiac computed tomography and its main application, coronary computed tomography angiography, have been established as a noninvasive technique for anatomical assessment of coronary arteries. This new era of coronary artery evaluation by coronary computed tomography angiography has arisen from the rapid advancement in computed tomography technology, which has led to massive diagnostic and prognostic clinical studies in various patient populations. This article gives a brief overview of current multidetector cardiac computed tomography systems, developing cardiac computed tomography technologies in both hardware and software fields, innovative radiation exposure reduction measures, multidetector cardiac computed tomography functional studies, and their newer clinical applications beyond coronary computed tomography angiography. PMID:25574342

Chaikriangkrai, Kongkiat; Choi, Su Yeon; Nabi, Faisal; Chang, Su Min

2014-01-01

319

The Technology Refresh Program: Affording State-of-the Art Personal Computing.  

ERIC Educational Resources Information Center

Describes the Florida Community College Technology Refresh Program in which 28 Florida community colleges refresh their personal computer technology on a three-year cyclical basis through negotiation of a contract with Dell Computer Corporation. Discusses the contract highlights (such as a 22.5 percent discount on personal computers and on-site…

Spiwak, Rand

2000-01-01

320

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

321

The relationship between student and faculty attitudes toward computer technology in advanced arts classes  

Microsoft Academic Search

This study examined the relationship between faculty attitudes toward computer technology and student attitudes toward computer technology in advanced arts classes at Middle Tennessee State University during spring semester 2004. This study was focused on the disciplines of art, dance, music, and theatre, and was limited to faculty and students engaged in the 3000 and 4000 level classes. The Computer

Virginia Donnell

2004-01-01

322

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

323

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

Code of Federal Regulations, 2010 CFR

...a) Electronic, computer or other technologic...the playing of a game; (2) Is not...b) Electronic, computer or other technologic...levels in a common game; (2) Facilitate...player to play a game with or against...Examples of electronic, computer or other...

2010-04-01

324

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

Code of Federal Regulations, 2011 CFR

...a) Electronic, computer or other technologic...the playing of a game; (2) Is not...b) Electronic, computer or other technologic...levels in a common game; (2) Facilitate...player to play a game with or against...Examples of electronic, computer or other...

2011-04-01

325

Pairing induced superconductivity in holography  

NASA Astrophysics Data System (ADS)

We study pairing induced superconductivity in large N strongly coupled systems at finite density using holography. In the weakly coupled dual gravitational theory the mechanism is conventional BCS theory. An IR hard wall cut-off is included to ensure that we can controllably address the dynamics of a single confined Fermi surface. We address in detail the interplay between the scalar order parameter field and fermion pairing. Adding an explicitly dynamical scalar operator with the same quantum numbers as the fermion-pair, the theory experiences a BCS/BEC crossover controlled by the relative scaling dimensions. We find the novel result that this BCS/BEC crossover exposes resonances in the canonical expectation value of the scalar operator. This occurs not only when the scaling dimension is degenerate with the Cooper pair, but also with that of higher derivative paired operators. We speculate that a proper definition of the order parameter which takes mixing with these operators into account stays finite nevertheless.

Bagrov, Andrey; Meszena, Balazs; Schalm, Koenraad

2014-09-01

326

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

327

Reviews of computing technology: A review of compound document architectures  

SciTech Connect

This review of computing technology will define, describe, and give examples of various approaches to document management through the use of compound document architectures. Experts agree that only 10% of business information exists in machine readable form, but much of what is stored is not in useful form. As a result, the average business document is copied over a dozen times during its life and duplicate copies are stored in numerous locations. The goal of compound document architectures is to provide an information support environment where rapid access to the correct information in the proper format is simplified. A compound document architecture provides structure to seemingly unstructured electronic documents, and standardizes the methods for interchange and access of entire or partial documents by authors and users.

Hudson, B.J.

1991-10-01

328

Application Specific Performance Technology for Productive Parallel Computing  

SciTech Connect

Our accomplishments over the last three years of the DOE pro ject â??Application-Specific Perfor- mance Technology for Productive Parallel Computingâ? (DOE Agreement: DE-FG02-05ER25680) are described below. The pro ject will have met all of its ob jectives by the time of its completion at the end of September, 2008. Two extensive yearly progress reports were produced in in March 2006 and 2007 and were previously submitted to the DOE Oï¬?ce of Advanced Scientific Computing Research (OASCR). Following an overview of the ob jectives of the pro ject, we summarize for each of the pro ject areas the achievements in the first two years, and then describe in some more detail the pro ject accomplishments this past year. At the end, we discuss the relationship of the proposed renewal application to the work done on the current pro ject.

Allen D. Malony; Sameer Shende

2008-10-01

329

The Utah Educational Technology Initiative Year Two Evaluation: Program Implementation, Computer Acquisition and Placement, and Computer Use.  

ERIC Educational Resources Information Center

This evaluation report describes program implementation, computer acquisition and placement, and computer use during the second year (1991-92) of the Utah Educational Technology Initiative (ETI). In addition, it discusses the various ways computers are used in Utah schools and reports the opinions and experiences of ETI coordinators in the 12…

Mergendoller, John R.; And Others

330

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

331

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

332

Not All Created Equal: Individual-Technology Fit of Brain-Computer Interfaces  

Microsoft Academic Search

This work presents a model stemming from literature on task-technology fit that seeks to match individual user characteristics and features of brain-computer interface technologies with performance to expedite the technology-fit process. The individual-technology fit model is tested with a brain-computer interface based on a control signal called the mu rhythm that is recorded from the motor cortex region. Characteristics from

Adriane B. Randolph

2012-01-01

333

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

334

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

335

Leonardo's laptop: human needs and the new computing technologies  

Microsoft Academic Search

The old computing was about what computers could do; the new computing is about what people can do.To accelerate the shift from the old to the new computing designers need to:reduce computer user frustration. Recent studies show 46% of time is lost to crashes, confusing instructions, navigation problems, etc. Public pressure for change could promote design improvements and increase reliability,

Ben Shneiderman

2005-01-01

336

Page 1 of 4 Michigan Technological University Computer Use Policy  

E-print Network

's computers and networks for non-MTU-related business purposes or personal gain without authorization access to computers, computer systems, and computer networks for certain fraudulent purposes; to prohibit individual prior to any activity that might threaten the security or performance of University computers

337

The Impact of Computer Technology on Schools in Chile.  

ERIC Educational Resources Information Center

Examines the impact of computers on Chilean education. Topics discussed include the Chilean educational system; the integration of computers in private schools; leadership; and results of a survey that characterized the use of computers in 1,604 schools, including socioeconomic levels of students, types of computers and software, and computer…

Oteiza, Fidel L.

1993-01-01

338

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

339

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

340

Automatic Measurement Of Deformations Of Curved Surface Using Carrier-Holography  

NASA Astrophysics Data System (ADS)

The present paper proposed a complete method to obtian whole-field displacements information at the curved surface of a body by using carrier-holography and rasterstereography. In the carrier-holography,the fringe pattern of interferogram consists of two parts. Ons is the displacement due to surface deformation, another is a straight fringe family with equal pitch produced by artificality and rigid body moving (if exist). the components of a displacement at every point are given from demodulating carrier-isothetics pattern by means of image processing. The space curvatures of a curved sueface are measured by the resterstereograph method. All the procedure from collecting image to printing result are completed automatically by a personal computer. For example, a model of a hyperboloidal arch dam is nonuniform heated,the thermal displacements on the arch suface are measured.

Zhu, Xu; Ke, Jiang; Yuzhuo, Chen; Bao-he, Zhang

1988-12-01

341

Reviews of computing technology: Fiber distributed data interface. Revision  

SciTech Connect

This technology report describes Fiber Distributed Data Interface (FDDI) as a technology, looks at the applications of this technology, examines the current economics of using it, and describe activities and plans by the Information Resource Management Department to implement this technology at the Savannah River Site.

Johnson, A.J.

1992-04-01

342

Reviews of computing technology: Fiber distributed data interface  

SciTech Connect

This technology report describes Fiber Distributed Data Interface (FDDI) as a technology, looks at the applications of this technology, examines the current economics of using it, and describe activities and plans by the Information Resource Management Department to implement this technology at the Savannah River Site.

Johnson, A.J.

1992-04-01

343

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

344

Student use of Mobile TechnologyStudent use of Mobile TechnologyStudent use of Mobile TechnologyStudent use of Mobile Technology In CiCS (Corporate Information and Computing Services) we are always looking to improve our services.  

E-print Network

TechnologyStudent use of Mobile Technology In CiCS (Corporate Information and Computing Services) wePage 1 Student use of Mobile TechnologyStudent use of Mobile TechnologyStudent use of Mobile are always looking to improve our services. We are interested in your use of mobile technology (phones

Martin, Stephen John

345

Predicting Cloud Computing Technology Adoption by Organizations: An Empirical Integration of Technology Acceptance Model and Theory of Planned Behavior  

ERIC Educational Resources Information Center

Organizations are finding it difficult in today's economy to implement the vast information technology infrastructure required to effectively conduct their business operations. Despite the fact that some of these organizations are leveraging on the computational powers and the cost-saving benefits of computing on the Internet cloud, others…

Ekufu, ThankGod K.

2012-01-01

346

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

347

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

ERIC Educational Resources Information Center

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…

Ihmeideh, Fathi

2010-01-01

348

A Quantitative Exploration of Preservice Teachers' Intent to Use Computer-based Technology  

ERIC Educational Resources Information Center

Based on Bandura's (1977) social learning theory, the purpose of this study is to identify the relationship of preservice teachers' perceptions of faculty modeling of computer-based technology and preservice teachers' intent of using computer-based technology in educational settings. There were 92 participants in this study; they were enrolled in…

Kim, Kioh; Jain, Sachin; Westhoff, Guy; Rezabek, Landra

2008-01-01

349

An Exploratory Study of the Implementation of Computer Technology in an American Islamic Private School  

ERIC Educational Resources Information Center

This exploratory study of the implementation of computer technology in an American Islamic private school leveraged the case study methodology and ethnographic methods informed by symbolic interactionism and the framework of the Muslim Diaspora. The study focused on describing the implementation of computer technology and identifying the…

Saleem, Mohammed M.

2009-01-01

350

Beginnings: Introducing Computer Technology to Students in Speech-Language Pathology and Audiology.  

ERIC Educational Resources Information Center

In the areas of audiology and speech science, computer technology has moved to the forefront in both the clinical and laboratory settings. It is imperative that students in both speech-language pathology and audiology acquire fundamental skills with all aspects of computer technology in order to maintain professional marketability. A survey of 75…

McErlain, Eileen; Squibb, Kevin

351

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

352

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.

353

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

354

Technion -Israel Institute of Technology Department of Computer Science  

E-print Network

surface matching. Week 8: multidimensional scaling, LS-MDS, SMACOF, multi-grid MDS. Week 9: non-Euclidean of mathematics and computer science such as differential and metric geometry, numerical analysis, optimization, computer graphics, machine learning, computer vision and computational geometry. The course objective

Kimmel, Ron

355

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

356

Dental Student Experience and Perceptions of Computer Technology.  

ERIC Educational Resources Information Center

A survey of 180 dental students in 3 classes assessed student knowledge of computer-related topics and perceptions of the usefulness of computers in different areas of practice management. Computer ownership and use, computer-related courses taken, software types used, and student characteristics (age, sex, academic achievement, undergraduate…

Feldman, Cecile A.

1992-01-01

357

An Empirical Investigation of the Relationshops Among Math Confidence, Computer Confidence and Computer Self-Efficacy: Implications for Technology Education  

Microsoft Academic Search

A popular issue in the 1980’s and early 1990’s, computer self-efficacy (CSE) remains an important area of research. Educators, industry leaders, and government officials argue that the United States is falling behind other countries in technology innovation. And, most attribute this situation to ineffective education in the areas of math, science, and technology. The current study provides insight into these

Morris Jr. R. Franklin; Evelyn H. Thrasher

2008-01-01

358

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.

359

Preparing for Further Introduction of Computing Technology in Vancouver Community College Instruction. Report of the Instructional Computing Committee.  

ERIC Educational Resources Information Center

After examining the impact of changing technology on postsecondary instruction and on the tools needed for instruction, this report analyzes the status and offers recommendations concerning the future of instructional computing at Vancouver Community College (VCC) in British Columbia. Section I focuses on the use of computers in community college…

Vancouver Community Coll., British Columbia.

360

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.

361

Does technological performance gap drive product performance?: An explorative study of personal computer gaming  

Microsoft Academic Search

In this paper we firstly develop a means to measure the technological performance disparity between evolving technological sub-systems of the PC (personal computer) system and subsequently employ this measure in the study of the GPU (graphics processing unit) and PC game sub-systems¿ evolutions. Secondly, the paper explores the connection between the observed temporal behavior of technological performance gap and the

O. Dedehayir; S. J. Makinen

2008-01-01

362

A Forecast for Technology and Education: The Report of a Computer Conferencing Delphi.  

ERIC Educational Resources Information Center

This report on an application of the Delphi methodology to education and technology in the context of a Michigan project highlights findings related to: instructional material development; courseware; budgets and teachers; computer literacy; technology access and use; utilization barriers; impact; organizational adaptation; technology integration;…

Waggoner, Michael D.; Goldberg, Albert L.

1986-01-01

363

Updated: 10/8/08 Sound Recording Technology Minor for Electrical and Computer Engineering Students  

E-print Network

Updated: 10/8/08 Sound Recording Technology Minor for Electrical and Computer Engineering Students This supportive minor in sound recording technology is for electrical engineering majors only. Students with the coordinator of sound recording technology. The petition is to be filed after the completion of 71

Massachusetts at Lowell, University of

364

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

365

Manned space station environmental control and life support system computer-aided technology assessment program  

NASA Technical Reports Server (NTRS)

A computer program for assessing manned space station environmental control and life support systems technology is described. The methodology, mission model parameters, evaluation criteria, and data base for 17 candidate technologies for providing metabolic oxygen and water to the crew are discussed. Examples are presented which demonstrate the capability of the program to evaluate candidate technology options for evolving space station requirements.

Hall, J. B., Jr.; Pickett, S. J.; Sage, K. H.

1984-01-01

366

In the Clouds: The Implications of Cloud Computing for Higher Education Information Technology Governance and Decision Making  

ERIC Educational Resources Information Center

Emerging technologies challenge the management of information technology in organizations. Paradigm changing technologies, such as cloud computing, have the ability to reverse the norms in organizational management, decision making, and information technology governance. This study explores the effects of cloud computing on information technology…

Dulaney, Malik H.

2013-01-01

367

The Dialogic Classroom: Teachers Integrating Computer Technology, Pedagogy, and Research.  

ERIC Educational Resources Information Center

The 12 essays collected in this book suggest both practical and theoretical approaches to teaching through networked technologies. Moving beyond technology for its own sake, the book articulates a pedagogy which makes its own productive uses of emergent technologies, both inside and outside the classroom. The book models for students one possible…

Galin, Jeffrey R., Ed.; Latchaw, Joan, Ed.

368

Desktop Technology for Newspapers: Use of the Computer Tool.  

ERIC Educational Resources Information Center

This work considers desktop publishing technology as a way used to paginate newspapers electronically, tracing the technology's development from the beginning of desktop publishing in the mid-1980s to the 1990s. The work emphasizes how desktop publishing technology is and can be used by weekly newspapers. It reports on a Pennsylvania weekly…

Wilson, Howard Alan

369

Enhanced resolution and throughput of Fresnel incoherent correlation holography (FINCH)  

E-print Network

Enhanced resolution and throughput of Fresnel incoherent correlation holography (FINCH) using dual correlation holography (FINCH) records holograms under incoherent illumination. FINCH was implemented with two and light source bandwidth, FINCH with two lenses of close focal lengths yields a better hologram

Rosen, Joseph

370

Vibration motions studied by Heterodyne Holography , F. Verpillat1  

E-print Network

Vibration motions studied by Heterodyne Holography F. Joud1 , F. Verpillat1 , P.A. Taillard2 , M and signal arms, heterodyne holography is well adapted to vibration analysis. Vibration sidebands can. Gross, F. Joud, M. Atlan, P. Taillard, F. Verpillat, and N. Verrier, "Vibration motions studied

Paris-Sud XI, Université de

371

Negative magnetoresistivity in chiral fluids and holography  

E-print Network

In four dimensions Weyl fermions possess a chiral anomaly which leads to several special features in the transport phenomena, such as the negative longitudinal magnetoresistivity. In this paper, we study its inverse, the longitudinal magnetoconductivity, in the case of a chiral anomalous system with a background magnetic field B using the linear response method in the hydrodynamic limit and from holography. Our hydrodynamic results show that in general we need to have energy, momentum and charge dissipations to get a finite DC longitudinal magnetoconductivity due to the existence of the chiral anomaly. Applying the formula that we get from hydrodynamics to the holographic system in the probe limit, we find that the result in the hydrodynamic regime matches that calculated from holography via Kubo formula. The holographic result shows that in an intermediate regime of B there is naturally a negative magnetoresistivity which decreases as 1/B. At small B direct calculations in the holographic system suggest that...

Landsteiner, Karl; Sun, Ya-Wen

2014-01-01

372

The Relationship Between Perceived Stress and Computer Technology Attitude: an Application on Health Sciences Students  

PubMed Central

Introduction: The aim of this study is to define attitudes of students in health sciences towards perceived personal stress and computer technologies, and to present the relationship between stress and computer technology attitudes. Methods: In this scope, this study has a descriptive nature and thus a questionnaire has been applied on 764 students from Afyon Kocatepe University Health Sciences High School, Turkey for data gathering. Descriptive statistics, independent samples, t test, one way ANOVA, and regression analysis have been used for data analysis. Findings: In the study, it is seen that female (=3,78) have a more positive attitude towards computer technology than male students (=3,62). according to the results of regression analysis of the study, the regression model between computer technology attitude (CTA) and perceived stress (PS) has been found meaningful (F=16,291; p<0,005). There was a negative relationship between computer technology attitude and perceived stress (when computer technology altitude increases, perceived stress decreases), and an increase of one unit in computer attitude results in 0.275 decrease in perceived stress. Conclusions: it can be concluded that correct and proper use of computer technologies can be accepted as a component of overcoming stress methods. PMID:25870489

Ozyurek, Pakize; Oztasan, Nuray; Kilic, Ibrahim

2015-01-01

373

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

374

Functional holography analysis: Simplifying the complexity of dynamical networks  

SciTech Connect

We present a novel functional holography (FH) analysis devised to study the dynamics of task-performing dynamical networks. The latter term refers to networks composed of dynamical systems or elements, like gene networks or neural networks. The new approach is based on the realization that task-performing networks follow some underlying principles that are reflected in their activity. Therefore, the analysis is designed to decipher the existence of simple causal motives that are expected to be embedded in the observed complex activity of the networks under study. First we evaluate the matrix of similarities (correlations) between the activities of the network's components. We then perform collective normalization of the similarities (or affinity transformation) to construct a matrix of functional correlations. Using dimension reduction algorithms on the affinity matrix, the matrix is projected onto a principal three-dimensional space of the leading eigenvectors computed by the algorithm. To retrieve back information that is lost in the dimension reduction, we connect the nodes by colored lines that represent the level of the similarities to construct a holographic network in the principal space. Next we calculate the activity propagation in the network (temporal ordering) using different methods like temporal center of mass and cross correlations. The causal information is superimposed on the holographic network by coloring the nodes locations according to the temporal ordering of their activities. First, we illustrate the analysis for simple, artificially constructed examples. Then we demonstrate that by applying the FH analysis to modeled and real neural networks as well as recorded brain activity, hidden causal manifolds with simple yet characteristic geometrical and topological features are deciphered in the complex activity. The term 'functional holography' is used to indicate that the goal of the analysis is to extract the maximum amount of functional information about the dynamical network as a whole unit.

Baruchi, Itay; Grossman, Danny; Volman, Vladislav; Shein, Mark; Hunter, John; Towle, Vernon L.; Ben-Jacob, Eshel [School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv (Israel); Department of Neurology, MC-2030, University of Chicago Hospitals, Chicago, Illinois 60637 (United States); School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv (Israel); Center for Theoretical and Biological Physics, University of California San Diego, La Jolla, California 92093 (United States)

2006-03-15

375

Applications of optical holography to applied mechanics.  

NASA Technical Reports Server (NTRS)

This paper provides a brief summary of applications of optical holography and holographic interferometry to applied solid mechanics. Basic equations commonly used in fringe interpretation are described and used to reduce the data contained on holographic interferograms. A comparison of data obtained holographically with analytical prediction is given wherever possible. Applications contained herein include front surface physics, study of bomb breakup, transverse wave propagation, study of mode shapes of panels at elevated temperatures, nondestructive testing, and vibration analysis.

Aprahamian, R.

1972-01-01

376

Evaluation of computer-based ultrasonic inservice inspection systems  

SciTech Connect

This report presents the principles, practices, terminology, and technology of computer-based ultrasonic testing for inservice inspection (UT/ISI) of nuclear power plants, with extensive use of drawings, diagrams, and LTT images. The presentation is technical but assumes limited specific knowledge of ultrasonics or computers. The report is divided into 9 sections covering conventional LTT, computer-based LTT, and evaluation methodology. Conventional LTT topics include coordinate axes, scanning, instrument operation, RF and video signals, and A-, B-, and C-scans. Computer-based topics include sampling, digitization, signal analysis, image presentation, SAFI, ultrasonic holography, transducer arrays, and data interpretation. An evaluation methodology for computer-based LTT/ISI systems is presented, including questions, detailed procedures, and test block designs. Brief evaluations of several computer-based LTT/ISI systems are given; supplementary volumes will provide detailed evaluations of selected systems.

Harris, R.V. Jr.; Angel, L.J.; Doctor, S.R.; Park, W.R.; Schuster, G.J.; Taylor, T.T. [Pacific Northwest Lab., Richland, WA (United States)

1994-03-01

377

Models of Educational Computing @ Home: New Frontiers for Research on Technology in Learning.  

ERIC Educational Resources Information Center

Discusses models of home educational computing that are linked to learning in school and recommends the need for research that addresses the home as a computer-based learning environment. Topics include a history of research on educational computing at home; technological infrastructure, including software and compatibility; Internet access;…

Kafai, Yasmin B.; Fishman, Barry J.; Bruckman, Amy S.; Rockman, Saul

2002-01-01

378

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

379

Understanding the Critics of Educational Technology: Gender Inequities and Computers 1983-1993.  

ERIC Educational Resources Information Center

Although many view computers purely as technological tools to be utilized in the classroom and workplace, attention has been drawn to the social differences computers perpetuate, including those of race, class, and gender. This paper focuses on gender and computing by examining recent analyses in regards to content, form, and usage concerns. The…

Mangione, Melissa

380

The Use of Computer Communication Technology in a College-Level Introductory Nutrition Course  

Microsoft Academic Search

Computer communication applications such as electronic mail and the Internet are changing the field of education. However, the use of these applications is just emerging in nutrition education. Because computer technology has been reported to enhance the learning of college students, it is important to identify new strategies to incorporate this medium into the classroom.The use of a computer communication

D. R. Paulhamus

1998-01-01

381

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

382

Electron holography of devices with epitaxial layers  

SciTech Connect

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 V{sub 0}?=?12.75?V of the intrinsic epitaxial SiGe was measured by electron holography in devices with Ge content C{sub Ge}?=?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., E-mail: Michael.gribelyuk@globalfoundries.com; Ontalus, V.; Baumann, F. H.; Zhu, Z.; Holt, J. R. [IBM Systems and Technology Group, Hopewell Junction, New York 12533 (United States)

2014-11-07

383

Aberration compensation in lensless digital holography  

NASA Astrophysics Data System (ADS)

Lensless digital holography could improve the resolution of digital holography reconstruction and has drawn wide attention. The complex wave-front could be reconstructed through Fourier transformation of a single hologram. It's crucial to reconstruct the phase precisely. However the phase constructed from a single hologram usually contains a quadratic aberration. Many methods are proposed to remove the item. In this paper the method of lateral shearing interferometry is studied to compensate the quadratic aberration. First we show the aberration in lensless digital holography and the lateral shearing interferometry. Then numerical simulations are carried out to test the method. It can be concluded that the method of linear fitting could effectively extract the quadratic aberration. The drawback is that the quadratic phase information extracted could not discern the additional aberration and the quadratic item included by the object wave field. A small local smooth area couldn't guarantee good estimation of quadratic aberrations. A larger area could get better results even in the presence of noises. However the aberration compensation depends greatly on noises. The reason of larger residual aberrations in the presence of noises is that noises influence greatly on the phase reconstruction including unwrapping.

Yao, Ping; Yu, Hua

2014-12-01

384

Negative magnetoresistivity in chiral fluids and holography  

E-print Network

In four dimensions Weyl fermions possess a chiral anomaly which leads to several special features in the transport phenomena, such as the negative longitudinal magnetoresistivity. In this paper, we study its inverse, the longitudinal magnetoconductivity, in the case of a chiral anomalous system with a background magnetic field B using the linear response method in the hydrodynamic limit and from holography. Our hydrodynamic results show that in general we need to have energy, momentum and charge dissipations to get a finite DC longitudinal magnetoconductivity due to the existence of the chiral anomaly. Applying the formula that we get from hydrodynamics to the holographic system in the probe limit, we find that the result in the hydrodynamic regime matches that calculated from holography via Kubo formula. The holographic result shows that in an intermediate regime of B there is naturally a negative magnetoresistivity which decreases as 1/B. At small B direct calculations in the holographic system suggest that holography provides a new explanation for the small B positive magnetoresistivity behavior seen in experiment, i.e. the small B behavior comes from the quantum critical conductivity being affected by the chiral anomaly.

Karl Landsteiner; Yan Liu; Ya-Wen Sun

2015-03-03

385

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

386

Computer Programmed Milling Machine Operations. High-Technology Training Module.  

ERIC Educational Resources Information Center

This learning module for a high school metals and manufacturing course is designed to introduce the concept of computer-assisted machining (CAM). Through it, students learn how to set up and put data into the controller to machine a part. They also become familiar with computer-aided manufacturing and learn the advantages of computer numerical…

Leonard, Dennis

387

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

388

The application of microprocessor technology to in-flight computation  

NASA Technical Reports Server (NTRS)

A modular design of a general purpose microprocessor-based computer to perform in-flight computations for cross-country soaring pilots is described. The basic requirements for the system are discussed. Several specialized applications of the computer are presented, including real-time pilot feedback and flight-test data acquisition and reduction.

Sawyer, P. L.; Somers, D. M.

1979-01-01

389

Interact, play, explore -by means of interactive computer game technologies!  

E-print Network

for problem-solving, education and training as well as movie entertainment. Informatics: Games Engineering games engineering requires profound knowledge of the foundations of computer science, good programming, a bachelor's degree in Informatics: Games Engineering, computer science, or a similar computer-related field

Cengarle, María Victoria

390

Fascinating Technology: Computer Games as an Issue for Religious Education  

ERIC Educational Resources Information Center

Computer games as an important part of youth culture can, from a certain perspective, be highly relevant for religious education. I will review the role of computer games, and then give a brief overview, suggesting a specific phenomenological approach for research on computer games and religious education. After presenting one example of such…

Scholtz, Christopher P.

2005-01-01

391

Cloud Computing: A Free Technology Option to Promote Collaborative Learning  

ERIC Educational Resources Information Center

In a time of budget cuts and limited funding, purchasing and installing the latest software on classroom computers can be prohibitive for schools. Many educators are unaware that a variety of free software options exist, and some of them do not actually require installing software on the user's computer. One such option is cloud computing. This…

Siegle, Del

2010-01-01

392

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

SciTech Connect

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., E-mail: ando-koji@aist.go.jp; Yuasa, S. [National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8568 (Japan); Fujita, S.; Ito, J.; Yoda, H. [Toshiba Corporation, Kawasaki 212-8582 (Japan); Suzuki, Y. [Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531 (Japan); Nakatani, Y. [Department of Communication Engineering and Informatics, University of Electro-Communication, Chofu 182-8585 (Japan); Miyazaki, T. [WPI-AIMR, Tohoku University, Sendai 980-8577 (Japan)

2014-05-07

393

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

394

Workshop on Computer Science and Information Technologies CSIT'2002, Patras, Greece, 2002 Intelligent Educational Systems for Individualized Learning  

E-print Network

Workshop on Computer Science and Information Technologies CSIT'2002, Patras, Greece, 2002. Proceedings of the 4th International Workshop on Computer Science and Information Technologies CSIT'2002 information concerning the user, (c) the pedagogical model which #12;Intelligent Educational Systems

395

A review of the commercial brain-computer interface technology from perspective of industrial robotics  

Microsoft Academic Search

Research on brain-computer interface (BCI) began in the 1970s. Great efforts in neuroscience, robotics and computer sciences have spent by many research groups to develop BCI technologies and its applications. Recently, the commercial brain-computer interface devices are emerging in gaming industry. These devices translate the electrical biosignals of a brain directly into computer commands and take advantage of total immersion

Biao Zhang; Jianjun Wang; Thomas Fuhlbrigge

2010-01-01

396

STEM-Based Computational Modeling for Technology Education  

ERIC Educational Resources Information Center

According to professionals in education, change is an ever-present and evolving process. With transformation in education at both state and national levels, technology education must determine a position in this climate of change. This paper reflects the views on the future of technology education based on an ongoing research project. The purpose…

Clark, Aaron C.; Ernst, Jeremy V.

2008-01-01

397

Computers & Technology in School Library Media Centers. Professional Growth Series.  

ERIC Educational Resources Information Center

Technology is arriving in school libraries in unprecedented quantities, resulting in many changes in the school library media center. While most librarians agree that technology is wonderful, many are feeling the stress of rapid change and coping with the decisions made by educational policy makers. This looseleaf notebook, written for the novice,…

Bucher, Katherine Toth

398

NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY/ NATIONAL COMPUTER SECURITY CENTER  

E-print Network

National Bank Virgil Gibson GrumannData Systems Dennis Gilbert National Institute of Standards and Technology Irene Gilbert National Institute of Standards and Technology Captain James Goldston, USAF AFCSC Dr. Carl Landwehr Robert lau Dr. Theodore M.P. lee Steven B. lipner Teresa lunt Dr. William V

399

Architectures, Concepts and Technologies for Service Oriented Computing : Proceedings of the 2nd International Workshop on Architectures, Concepts and Technologies for Service Oriented Computing - ACT4SOC 2008  

Microsoft Academic Search

This volume contains the proceedings of the Second International Workshop on Architectures, Concepts and Technologies for Service Oriented Computing (ACT4SOC 2008), held on July 5 in Porto, Portugal, in conjunction with the Third International Conference on Software and Data Technologies (ICSOFT 2008).\\u000aThe ACT4SOC workshop aims at serving as a forum for researchers and practitioners, from academia and industry, to

Sinderen van Marten

2008-01-01

400

A promising future of computing for geospatial technologies  

Microsoft Academic Search

The explosion of the power and sophistication of computing applications in the past few years has revolutionized the way we live and work. This marked trend is of especial significance for geospatial computing, which directly relates to the very foundations of our society and essentially embraces all the diversification of its activities. Geospatial information, already important in many scientific and

Lindi Liao

2012-01-01

401

Science and Technology Resources on the Internet: Computer Security.  

ERIC Educational Resources Information Center

Discusses issues related to computer security, including confidentiality, integrity, and authentication or availability; and presents a selected list of Web sites that cover the basic issues of computer security under subject headings that include ethics, privacy, kids, antivirus, policies, cryptography, operating system security, and biometrics.…

Kinkus, Jane F.

2002-01-01

402

E-science meets computational science and information technology  

Microsoft Academic Search

Over the last decade or so, there has been much discussion of and progress in computational science. The US High Performance Computing and Communications Initiative and the National Science Foundation (NSF) grand challenge programs largely focused on this trend. Now the NSF has a new cyber infrastructure report continuing the same emphasis on distributed systems. The author looks at the

G. Fox

2002-01-01

403

Strategies for Introducing Computer Technologies into a Biology Laboratory Program  

ERIC Educational Resources Information Center

Computers have been installed in the General Biology laboratory at Purchase College and incorporated into the laboratory curriculum for all biology majors at the introductory level. The goal is to ensure that all students become familiar with general computer applications in the biological sciences and are comfortable enough to use them regularly.…

Tillotson, Joanne Kivela

2002-01-01

404

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

405

Technological networks and the spread of computer viruses  

Microsoft Academic Search

Computer infections such as viruses and worms spread over networks of con- tacts between computers, with different types of networks being exploited by different types of infections. Here we analyze the structures of several of these networks, exploring their implications for modes of spread and the control of infection. We argue that vaccination strategies that focus on a limited number

Justin Balthrop; Stephanie Forrest; Mark E. J. Newman; Matthew M. Williamson

2004-01-01

406

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

407

A High Assurance Timing Synchronization Technology for Space On-Board Distributed Computer Systems  

Microsoft Academic Search

The system requirements of space on-board computer necessary to realize not only high reliability but also low cost are discussed. An architecture and high assurance timing synchronization technology that meet the requirements are proposed.

Hiroyuki Yashiro; Yoshirou Takahashi; Teruo Fujiwara

2002-01-01

408

NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY/ NATIONAL COMPUTER SECURITY CENTER  

E-print Network

Systems Dennis Gilbert National Institute ofStandards and Technology Irene Gilbert National Institute of Steven B. lipner Teresa lunt Dr. William V. Maconachy Sally Meglathery Dr. Jonathan Millen Warren Monroe

409

Designing pointing devices using brain-computer interface technology  

Microsoft Academic Search

Existing BCI technology can be used to produce application-independent pointing devices similar to eyetracking and head-pointing devices. The BCI technologies suitable for this purpose are the techniques that use external stimulators to evoke cortical potentials. However, current models for designing BCI Systems are not suitable for this purpose. A new functional model is proposed as a guide for designing BCI-based

S. G. Mason; M. M. Moore; G. E. Birch

2003-01-01

410

The security of cloud computing system enabled by trusted computing technology  

Microsoft Academic Search

Cloud computing provides people the way to share distributed resources and services that belong to different organizations or sites. Since cloud computing share distributed resources via the network in the open environment, thus it makes security problems important for us to develop the cloud computing application. In this paper, we pay attention to the security requirements in cloud computing environment.

Zhidong Shen; Qiang Tong

2010-01-01

411

Use of personal computing technology by deaf-blind individuals  

Microsoft Academic Search

This paper describes a system that enables deaf-blind people to work with micro-computers. This system utilizes the International Morse Code as a general communication medium. The deaf-blind person \\

Dan Zuckerman

1984-01-01

412

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.

413

EINDHOVEN UNIVERSITY OF TECHNOLOGY Department of Mathematics and Computer Science  

E-print Network

Centre for Analysis, Scientific computing and Applications Department of Mathematics and Computer Science+), or the even simpler case where a is constant, namely (1.4) - pu - mu + V (x)|u|p-2 u = |u|-2 u in . Since, the reaction diffusion problem ut = -div(D(u)Du) + (x, u), where D(u) = dp|Du|p-2 + dm|Du|m-2, dp > 0 and dm

Eindhoven, Technische Universiteit

414

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.

415

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

416

An Investigation of the Administrator's Role as Instructional Leader in Effective Computer Technology Integration  

ERIC Educational Resources Information Center

Purpose, scope, and method of study: Although computer technology has been a part of the educational community for many years, it is still not used at its optimal capacity (Gosmire & Grady, 2007b; Trotter, 2007). While teachers were identified early as playing important roles in the success of technology implementation, principals were often…

Thomas, Shailendra Nelle

2010-01-01

417

ICT Resources in the Teaching of Mathematics: Between Computer and School Technologies. A Case-Study  

ERIC Educational Resources Information Center

This article is based on a research project called "Information and communications technology (ICT) resources in school organizational and symbolic technology: a case-study" which was carried out in a primary school in Barcelona, Spain. The research looked at various interactions that took place between the computer as a teaching tool, the…

Bosco, Alejandra

2004-01-01

418

Information and Computing Technology and the Gap between School Pedagogy and Children's Culture  

ERIC Educational Resources Information Center

This article focuses on the gap between the use of Information and Computing Technology (ICT) in schools and the use made of ICT in children's everyday life outside school. Particular emphasis is placed on the communities of practice that young people create through their use of digital technology. The article is based on data collected over five…

Sorensen, Birgitte Holm

2005-01-01

419

The Study of Computer Industry Company's Performance: The Roles of Technology Strategy and External Network  

Microsoft Academic Search

Collaborate Commerce becomes gradually important in these years, when the technology divides into various segments so that the firms are enforced to collaborate with external network linkage. This is a survey research to study the influential factors of the company performance in computer industry in Taiwan. The two independent factors are technology strategy and external network. By using the random

Fen-Hui Lin; Hsing-Ya Chang

2006-01-01

420

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"

421

Predicting Preservice Teacher Competence in Computer Technology: Modeling and Application in Training Environments  

ERIC Educational Resources Information Center

The purpose of this study was to determine if modeling by university professors and practicum and cooperating teachers was related to preservice teachers' perceptions of their computer technology skills and if preservice teachers' use of technology in academic and other settings was related to those perceptions. Seventy-nine preservice teacher…

Fleming, Linda; Motamedi, Vahid; May, Lisa

2007-01-01

422

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

E-print Network

RE-BS-ENGT-CDAG Regional College Catalog Year: 2014-2015 Page 1 of 2 | Last Updated: 27-May-14/JSK for Instruction or TECH 33095 Special Topics: Applied Science and Technology or TECH 34002 Advanced CAD II 3Roadmap: Engineering Technology - Computer Design, Animation and Game Design - Bachelor of Science

Khan, Javed I.

423

Non-invasive brain–computer interface system: Towards its application as assistive technology  

Microsoft Academic Search

The quality of life of people suffering from severe motor disabilities can benefit from the use of current assistive technology capable of ameliorating communication, house-environment management and mobility, according to the user's residual motor abilities. Brain–computer interfaces (BCIs) are systems that can translate brain activity into signals that control external devices. Thus they can represent the only technology for severely

Febo Cincotti; Donatella Mattia; Fabio Aloise; Simona Bufalari; Gerwin Schalk; Giuseppe Oriolo; Andrea Cherubini; Maria Grazia Marciani; Fabio Babiloni

2008-01-01

424

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

425

Visual Speech in Technology-Enhanced Learning Department of Computer Science  

E-print Network

Visual Speech in Technology-Enhanced Learning Priya Dey Department of Computer Science University- enhanced learning. This work applies talking heads in a speech tutoring application for teaching English of visual speech in technology-enhanced learning. User trials explored the efficacy of the software

Maddock, Steve

426

Tangible computer programming: Exploring the use of emerging technology in classrooms and science museums  

Microsoft Academic Search

In considering ways to improve the use of digital technology in educational settings, it is helpful to look beyond desktop computers and conventional modes of interaction and consider the flood of emerging technologies that already play a prominent role in the everyday lives of children. In this dissertation, I will present a research project that builds on tangible user interface

Michael S. Horn

2009-01-01

427

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

428

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...

429

Heavy Section Steel Technology HSST eLib Computational Structural Fracture Mechanics Team  

E-print Network

Heavy Section Steel Technology ­ HSST eLib Computational Structural Fracture Mechanics Team the reports generated by the Heavy-Section Steel Technology (HSST) program (JCN B0119) from the early 1970's welcome the opportunity to discuss your potential applications and ways that the Heavy-Section Steel

430

Factors Impacting Adult Learner Achievement in a Technology Certificate Program on Computer Networks  

ERIC Educational Resources Information Center

This study investigates the factors impacting the achievement of adult learners in a technology certificate program on computer networks. We studied 2442 participants in 256 institutions. The participants were older than age 18 and were enrolled in the Cisco Certified Network Associate (CCNA) technology training program as "non-degree" or…

Delialioglu, Omer; Cakir, Hasan; Bichelmeyer, Barbara A.; Dennis, Alan R.; Duffy, Thomas M.

2010-01-01

431

"A Technical Assistance Report" on Computer Technology Applications. Smithville School District, Smithville, Massachusetts.  

ERIC Educational Resources Information Center

This report of the Technical Assistance Study provided to the Smithville Public Schools by the Technology Lighthouse of the Merrimack Education Center offers information for use in planning computer technology applications over a 3-year period. It provides specific guidelines and criteria for planning and development, equipment considerations,…

Merrimack Education Center, Chelmsford, MA.

432

Emergent technologies for teaching and learning: social media and ubiquitous computing  

Microsoft Academic Search

How can teachers and staff approach advanced technologies to create transformative learning experiences for and with their students? We explore three fields for deploying emerging technologies in innovative, effective, and sustainable ways. Pedagogical implementations of Web 2.0 have been growing in scope and diversity, with new forms of publishing, storytelling, and literacy emerging. Computer gaming, a worldwide cultural power, presents

Bryan N. Alexander

2008-01-01

433

An Evaluation of Computer-Managed Education Technology at New York City Community College.  

ERIC Educational Resources Information Center

The Computer-Managed Education Technology (COMET) program was designed to improve group instruction through the use of technological aids in the classroom. Specific objectives included: (1) improving feedback on student comprehension during a class period; (2) facilitating the administration and grading of homework and quizzes; (3) providing for…

Chitayat, Linda

434

Reconstruction of sound fields using TV holography  

NASA Astrophysics Data System (ADS)

A vibrating sound source causes periodic pressure variations in the air. The pressure variations lead to corresponding variations in the refractive index of the air which can be measured using interferometric techniques like TV- holography. Each measurement maps a cross-section of the integrated sound fields. To obtain a complete map of the volume distribution of sound field we record cross-sections from different directions. Using topographical backprojection of these recordings, we reconstruct the amplitude and phase of the sound field in any plane of the volume.

Lokberg, Ole J.; Rustad, Rolf; Espeland, Morten

1994-09-01

435

Holography, Probe Branes and Isoperimetric Inequalities  

E-print Network

In many instances of holographic correspondences between a d dimensional boundary theory and a d+1 dimensional bulk, a direct argument in the boundary theory implies that there must exist a simple and precise relation between the Euclidean on-shell action of a (d-1)-brane probing the bulk geometry and the Euclidean gravitational bulk action. This relation is crucial for the consistency of holography, yet it is non-trivial from the bulk perspective. In particular, we show that it relies on a nice isoperimetric inequality that must be satisfied in a large class of Poincar\\'e-Einstein spaces. Remarkably, this inequality follows from theorems by Lee and Wang.

Frank Ferrari; Antonin Rovai

2014-11-19

436

Phase-shift binary digital holography.  

PubMed

We propose phase-shift digital holography (DH) with a one-bit image sensor. In this method, the propagating complex field from an object is binarized by a one-bit sensor using a phase-shifter. The complex field on the hologram plane is then calculated with the one-bit image data. The object field is recovered via Fresnel back-propagation of the calculated hologram and filtering to suppress some artifacts caused by the binarization. The concept was demonstrated in preliminary experiments by using a synthetically binarized hologram with single-shot and multi-shot phase-shift DH. PMID:25490472

Horisaki, Ryoichi; Tahara, Tatsuki

2014-11-15

437

Holography, Probe Branes and Isoperimetric Inequalities  

E-print Network

In many instances of holographic correspondences between a d dimensional boundary theory and a d+1 dimensional bulk, a direct argument in the boundary theory implies that there must exist a simple and precise relation between the Euclidean on-shell action of a (d-1)-brane probing the bulk geometry and the Euclidean gravitational bulk action. This relation is crucial for the consistency of holography, yet it is non-trivial from the bulk perspective. In particular, we show that it relies on a nice isoperimetric inequality that must be satisfied in a large class of Poincar\\'e-Einstein spaces. Remarkably, this inequality follows from theorems by Lee and Wang.

Frank Ferrari; Antonin Rovai

2015-04-06

438

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

439

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

440

Changing How and What Children Learn in School with Computer-Based Technologies  

Microsoft Academic Search

Schools today face ever-increasing demands in their attempt to ensure that students are well- equipped to enter the workforce and navigate a complex world. Research indicates that computer technology can help support learning, and that it is especially useful in developing the higher order skills of critical thinking, analysis, and scientific inquiry. But the mere presence of computers in the

Jeremy Roschelle; Roy Pea; Christopher Hoadley; Douglas Gordin; Barbara Means

2000-01-01

441

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

442

A hardware\\/software co-design system using configurable computing technology  

Microsoft Academic Search

Virtual Computer Corporation has combined the latest reconfigurable component technology with a number of advanced software tools in one easy to use `system approach' to digital design. This hardware software co-design development system contains all the components necessary for configurable computing implementation in one integrated package. The paper describes the features and use of this system

J. Schewel

1998-01-01

443

A Hardware\\/Software Co-Design System Using Configurable Computing Technology  

Microsoft Academic Search

Virtual Computer Corporation has combined the latest reconfigurable component technology with a number of advanced software tools in one easy to use `system approach' to digital design. This Hardware Software Co-Design Development System contains all the components necessary for configurable computing implementation in one integrated package. This paper will describe the features and use of this system.

John Schwel; John Schewel

1998-01-01

444

Scaling the Digital Divide: Home Computer Technology and Student Achievement. Working Paper 48  

ERIC Educational Resources Information Center

Does differential access to computer technology at home compound the educational disparities between rich and poor? Would a program of government provision of computers to early secondary school students reduce these disparities? The authors use administrative data on North Carolina public school students to corroborate earlier surveys that…

Vigdor, Jacob L.; Ladd, Helen F.

2010-01-01

445

Scaling the Digital Divide: Home Computer Technology and Student Achievement. NBER Working Paper No. 16078  

ERIC Educational Resources Information Center

Does differential access to computer technology at home compound the educational disparities between rich and poor? Would a program of government provision of computers to early secondary school students reduce these disparities? We use administrative data on North Carolina public school students to corroborate earlier surveys that document broad…

Vigdor, Jacob L.; Ladd, Helen F.

2010-01-01

446

The Effects of Computer-Assisted Feedback Strategies in Technology Education: A Comparison of Learning Outcomes  

ERIC Educational Resources Information Center

This study investigated the effects of computer-assisted feedback strategies that have been utilized by university students in a technology education curriculum. Specifically, the study examined the effectiveness of the computer-assisted feedback strategy "Knowledge of Response feedback" (KOR), and the "Knowledge of Correct Responses feedback"…

Adams, Ruifang Hope; Strickland, Jane

2012-01-01

447

The Role of Wireless Computing Technology in the Design of Schools.  

ERIC Educational Resources Information Center

This document discusses integrating computers logically and affordably into a school building's infrastructure through the use of wireless technology. It begins by discussing why wireless networks using mobile computers are preferable to desktop machines in each classoom. It then explains the features of a wireless local area network (WLAN) and…

Nair, Prakash

448

Proceedings of the International Multiconference on Computer Science and Information Technology pp. 111121  

E-print Network

and a number of different approaches have been used for the automation. Usually, an evolutionary paradigmProceedings of the International Multiconference on Computer Science and Information Technology pp. 111­121 ISSN 1896-7094 c 2006 PIPS EMOT ­ Evolutionary Approach to 3D Computer Animation Halina

Fernandez, Thomas

449

Visualizing History: Computer Technology and the Graphic Presentation of the Past  

ERIC Educational Resources Information Center

Computer technology has impacted both the study and idea of history in a number of ways. The Internet has provided numerous web-sites for students to read, see and look into for historical information. Historians, both professional and public have also begun to utilize the computer in a variety of ways, both in academic terms as well as leisure…

Moss, Mark

2004-01-01

450

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.

451

Computer Based Technology and the Language/Liberal Arts: Stepping into the Electronic Universe.  

ERIC Educational Resources Information Center

The need for the liberal arts curriculum to incorporate new technology in order for education to reach its potential is examined in this paper, which also looks at the potential for computer-based telecommunications to extend continued education for professionals. A survey of applications of computer-based telecommunications in reading and writing…

Adams, Dennis M.

452

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

453

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

454

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

455

Jeremy S. Meredith Computer Scientist, Future Technologies Group  

E-print Network

applicable to trans-petascale applications. Professional Experience 2005­p R&D Staff, Future Technologies Biology Simulation Technique on Emerging Processing Architectures," J. S. Meredith, S. R. Alam, and J. S/s Sustained Performance in Simulations of Disorder Effects in High-Tc Superconductors," G. Alvarez, M. S

Pennycook, Steve

456

Computer-automated multiparadigm modeling in control systems technology  

Microsoft Academic Search

The use of model-based technologies has made it imperative for the development of a feedback control system to deal with many different tasks such as: plant modeling in all its variety; model reduction to achieve a complexity or level of abstraction suitable for the design task at hand; synthesis of control laws that vary from discrete event reactive control to

P. J. Mosterman; J. Sztipanovits; S. Engell

2004-01-01

457

NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY! NATIONAL COMPUTER SECURITY CENTER  

E-print Network

L. Dain Gary Carnegie Mellon University William Geer AFCSC Virgil Gibson Grumann Data Systems Dennis Gilbert National Institute of Standards and Technology Irene Gilbert National Institute of Frank Mayer Dr. Catherine Meadows Sally Meglathery William H. Murray Noel Nazario Dr. Peter Neumann Nick

458

Computer aided manufacturing technologies for centrifugal compressor impellers  

Microsoft Academic Search

The CAD\\/CAM technologies for manufacturing centrifugal compressor impellers and turbine blades are investigated in this research. The control data points of an impeller or a blade were obtained by using the reverse engineering method. The obtained data were used as the input data for UG CAD\\/CAM software to construct the CAD model. Increasing the machining efficiency during the rough and

Shang-Liang Chen; Wen-Tsai Wang

2001-01-01

459

Progress in hypersonic combustion technology with computation and experiment  

NASA Technical Reports Server (NTRS)

Design of successful airbreathing engines for operation at near-orbital speeds presents significant challenges in all the disciplines involved, including propulsion. This paper presents a discussion of the important physics of hypersonic combustion and an assessment of the state of the art of ground simulations with pulse facilities and with computational techniques. Recent examples of experimental and computational simulations are presented and discussed. The need for continued application of these tools to establish the credibility and fidelity of engineering design methods for practical hypersonic combustors is emphasized along with the critical need for improved diagnostic methods for hypervelocity reacting flows.

Anderson, Griffin Y.; Kumar, Ajay; Erdos, John I.

1990-01-01

460

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

461

An evolving infrastructure for scientific computing and the integration of new graphics technology  

SciTech Connect

The National Energy Research Supercomputer Center (NERSC) at the Lawrence Livermore National Laboratory is currently pursuing several projects to implement and integrate new hardware and software technologies. While each of these projects ought to be and is in fact individually justifiable, there is an appealing metaphor for viewing them collectively which provides a simple and memorable way to understand the future direction not only of supercomputing services but of computer centers in general. Once this general direction is understood, it becomes clearer what future computer graphics technologies would be possible and desirable, at least within the context of large scale scientific computing.

Fong, K.W.

1993-02-01

462

Managing Technostress: Optimizing the Use of Computer Technology.  

ERIC Educational Resources Information Center

Afraid of change, many employees refuse to join the computer revolution. The author states that only understanding and proper training can break down such resistance. The term "technostress" is described and the importance of employee self-assessment is examined. (CT)

Brod, Craig

1982-01-01

463

Practical Strategies for Power-Efficient Computing Technologies  

Microsoft Academic Search

After decades of continuous scaling, further advancement of silicon microelectronics across the entire spectrum of computing applications is today limited by power dissipation. While the trade-off between power and performance is well-recognized, most recent studies focus on the extreme ends of this balance. By concentrating instead on an intermediate range, an ~ 8?? improvement in power efficiency can be attained

Leland Chang; David J. Frank; Robert K. Montoye; Steven J. Koester; Brian L. Ji; Paul W. Coteus; Robert H. Dennard; Wilfried Haensch

2010-01-01

464

oitUMass Office of Information Technologies OIT Academic Computing  

E-print Network

headsets are ideal for basic solo recording. 3. Audio Editing Software: in this document we focus on Apple audio software that comes with MacOS as part of the iLife suite. It can be used to compose music, editLife, a software suite for your Macintosh computer and is one of the possible applications you can use to capture

Mountziaris, T. J.

465

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...

466

Adults' Uses of Computer Technology: Associations with Literacy Tasks  

ERIC Educational Resources Information Center

The present study examined data from a large, nationally representative sample--the National Assessment of Adult Literacy (NCES, 2007)--to examine how computer use and Internet-based literacy practices (use of e-mail, searching for information on the Internet, and Internet chatting) were related to prose, document, and quantitative literacy…

Smith, M. Cecil; Smith, Thomas J.

2010-01-01

467

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

468

Educational Technology Research Journals: Computers & Education, 2002-2011  

ERIC Educational Resources Information Center

In this study, the authors examined the journal "Computers & Education" to discover research trends in the articles published during 2002-2011. Research articles were analyzed to determine trends in the research methods and types of articles published, as well as the key topics published, top authors, and some of the most-cited…

Rackham, David D.; Hyatt, Frederick R.; Macfarlane, David C.; Nisse, Tony; Woodfield, Wendy; West, Richard E.

2013-01-01

469

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

470

A Smart Meeting Room with Pervasive Computing Technologies  

Microsoft Academic Search

Usability of pervasive computing features along with the detection of a meeting is very effective for the users. In this paper, we present the design of a smart meeting room (SMR) that not only detect the starting and ending of a meeting but also provide the support of participant's context information, knowledge usability and ephemeral group communication. Our approach will

Shameem Ahmed; Moushumi Sharmin; Sheikh Iqbal Ahamed

2005-01-01

471

Key Technologies Analysis of Three Sides Chinese Chess Computer Game  

Microsoft Academic Search

The three sides Chinese chess is a novel game which is developed from the traditional Chinese chess. There are not any research results on the three sides Chinese chess computer game. In this paper, the three sides Chinese game is firstly compared with the traditional Chinese chess. Then an algorithm of three sides game searching with pruning is put forward,

Zedan Chen; Miao Liu; Zhiqiang Li; Xiaofeng Lian

2008-01-01

472

SAMGrid experiences with the Condor technology in Run II computing  

SciTech Connect

SAMGrid is a globally distributed system for data handling and job management, developed at Fermilab for the D0 and CDF experiments in Run II. The Condor system is being developed at the University of Wisconsin for management of distributed resources, computational and otherwise. We briefly review the SAMGrid architecture and its interaction with Condor, which was presented earlier. We then present our experiences using the system in production, which have two distinct aspects. At the global level, we deployed Condor-G, the Grid-extended Condor, for the resource brokering and global scheduling of our jobs. At the heart of the system is Condor's Matchmaking Service. As a more recent work at the computing element level, we have been benefiting from the large computing cluster at the University of Wisconsin campus. The architecture of the computing facility and the philosophy of Condor's resource management have prompted us to improve the application infrastructure for D0 and CDF, in aspects such as parting with the shared file system or reliance on resources being dedicated. As a result, we have increased productivity and made our applications more portable and Grid-ready. Our fruitful collaboration with the Condor team has been made possible by the Particle Physics Data Grid.

Baranovski, A.; Loebel-Carpenter, L.; Garzoglio, G.; Herber, R.; Illingworth, R.; Kennedy, R.; Kreymer, A.; Kumar, A.; Lueking, L.; Lyon, A.; Merritt, W.; Terekhov, I.; Trumbo, J.; Veseli, S.; White, S.; /Fermilab; St. Denis, R.; /Glasgow U.; Jain, S.; Nishandar, A.; /Texas U., Arlington

2004-12-01

473

Future of computing technology in physics - the potentials and pitfalls  

SciTech Connect

The impact of the developments of modern digital computers is discussed, especially with respect to physics research in the future. The effects of large data processing capability and increasing rates at which data can be acquired and processed are considered. (GHT)

Brenner, A.E.

1984-02-01

474

Computer Technology in Curriculum and Instruction Handbook. Courseware Evaluation.  

ERIC Educational Resources Information Center

Developed to provide Washington State educators with information on the evaluation of computer software or courseware, this booklet includes brief sections on general criteria for evaluating instructional materials, general criteria for evaluating courseware, and special considerations in evaluating courseware. Such considerations include deciding…

Collins, Sue; Newman, Joan

475

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.

476

ELECTRON HOLOGRAPHY OF NANOMAGNETS IN ROCKS AND BACTERIA  

E-print Network

-reversed thermo-remanent magnetization. #12;Magnetotactic bacteria provide the simplest example of the useELECTRON HOLOGRAPHY OF NANOMAGNETS IN ROCKS AND BACTERIA Rafal E. Dunin-Borkowski1 , Richard J

Dunin-Borkowski, Rafal E.

477

High End Computing Technologies for Earth Science Applications: Trends, Challenges, and Innovations  

NASA Technical Reports Server (NTRS)

Earth science applications of the future will stress the capabilities of even the highest performance supercomputers in the areas of raw compute power, mass storage management, and software environments. These NASA mission critical problems demand usable multi-petaflops and exabyte-scale systems to fully realize their science goals. With an exciting vision of the technologies needed, NASA has established a comprehensive program of advanced research in computer architecture, software tools, and device technology to ensure that, in partnership with US industry, it can meet these demanding requirements with reliable, cost effective, and usable ultra-scale systems. NASA will exploit, explore, and influence emerging high end computing architectures and technologies to accelerate the next generation of engineering, operations, and discovery processes for NASA Enterprises. This article captures this vision and describes the concepts, accomplishments, and the potential payoff of the key thrusts that will help meet the computational challenges in Earth science applications.

Parks, John (Technical Monitor); Biswas, Rupak; Yan, Jerry C.; Brooks, Walter F.; Sterling, Thomas L.

2003-01-01

478

Particle and flow field holography: A critical survey  

NASA Technical Reports Server (NTRS)

A brief background is provided for the fields of particle and flow visualization holography. A summary of methods currently in use is given, followed by a discussion of more recent and unique applications. The problem of data reduction is discussed. A state of the art summary is then provided with a prognosis of the future of the field. Particle and flow visualization holography are characterized as powerful tools currently in wide use and with significant untapped potential.

Trolinger, James D.

1987-01-01

479

High-resolution imaging using endoscopic holography  

NASA Astrophysics Data System (ADS)

Endoscopic holography or endoholography combines the features of endoscopy and holography. The purpose of endoholographic imaging is to provide the physician with a unique means of extending diagnosis by providing a life-like record of tissue. Endoholographic recording will provide means for microscopic examination of tissue and in some cases may obviate the need to excise specimens for biopsy. In this method holograms which have the unique properties of three-dimensionality large focal depth and high resolution are made with a newly designed endoscope. The endoscope uses a single-mode optical fiber for illumination and single-beam reflection holograms are recorded in close contact with the tissue at the distal end of the endoscope. The holograms are viewed under a microscope. By using the proper combinations of dyes for staining specific tissue types with various wavelengths of laser illumination increased contrast on the cellular level can be obtained. Using dyes such as rose bengal in combination with the 514. 5 nm line of an argon ion laser and trypan blue or methylene blue with the 647. 1 nm line of a krypton ion laser holograms of the stained colon of a dog showed the architecture of the colon''s columnar epithelial cells. It is hoped through chronological study using this method in-vivo an increased understanding of the etiology and pathology of diseases such as Crohn''s diseases colitis proctitis and several different forms of cancer will help to their control. 1.

Bjelkhagen, Hans I.

1990-08-01

480

Gray-Scale Atom Holography  

Microsoft Academic Search

A gray-scale photographic image of atoms has been generated by usinga computer-designed thin-film hologram. An ultra-cold neon atomic beamin the 1s3 state was transmitted through a thin-film binary hologram made of SiN4 and generated a pattern of atoms on amicro-channel plate detector. The designand the quality evaluation of the hologram for gray-scale picturesare discussed theoretically. The validity of the theoretical

Tetsuo Kishimoto; Jun'ichi Fujita; Satoru Mitake; Fujio Shimizu

1999-01-01

481

Stringy holography at finite density  

NASA Astrophysics Data System (ADS)

We consider an exactly solvable worldsheet string theory in the background of a black brane with a gauge field flux. Holographically, such a system can be interpreted as a field theory with finite number of degrees of freedom at finite temperature and density. We construct closed string vertex operators which holographically represent the U(1) gauge field and the stress energy tensor and compute their two-point functions. At finite density the system behaves like a sum of two noninteracting fluids.

Goykhman, M.; Parnachev, A.

2014-12-01

482

Service Robot System Based on Brain-computer Interface Technology  

Microsoft Academic Search

This paper presents a brain-computer interface (BCI) system that can help the disabled to control external service robot. The system is based on electroencephalogram (EEG) alpha (a) wave. Alpha wave-block was recognized, processed and transmitted to control single option, and design of state selector helps to realize multi-option control. BCI subjects were able to use the system reliably after merely

Li Zhao; Chuo Li; Shigang Cui

2007-01-01

483

Use of personal computing technology by deaf-blind individuals  

Microsoft Academic Search

This paper describes a system that enables deaf-blind people to work with microcomputers. The system utilizes the International Morse Code as a general communication medium. The deaf-blind person hears Morse code via a vibrotactile device to see the computer's screen. This technique enables deaf-blind individuals to receive immediate feedback from their typing and to scan the screen. This makes it

Dan Zuckerman

1984-01-01

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

Parallel, distributed and GPU computing technologies in single-particle electron microscopy  

PubMed Central

Most known methods for the determination of the structure of macromolecular complexes are limited or at least restricted at some point by their computational demands. Recent developments in information technology such as multicore, parallel and GPU processing can be used to overcome these limitations. In particular, graphics processing units (GPUs), which were originally developed for rendering real-time effects in computer games, are now ubiquitous and provide unprecedented computational power for scientific applications. Each parallel-processing paradigm alone can improve overall performance; the increased computational performance obtained by combining all paradigms, unleashing the full power of today’s technology, makes certain applications feasible that were previously virtually impossible. In this article, state-of-the-art paradigms are introduced, the tools and infrastructure needed to apply these paradigms are presented and a state-of-the-art infrastructure and solution strategy for moving scientific applications to the next generation of computer hardware is outlined. PMID:19564686

Schmeisser, Martin; Heisen, Burkhard C.; Luettich, Mario; Busche, Boris; Hauer, Florian; Koske, Tobias; Knauber, Karl-Heinz; Stark, Holger

2009-01-01

487

Work and Technology in Higher Education: The Social Construction of Academic Computing. Technology and Education Series.  

ERIC Educational Resources Information Center

This volume contributes to the understanding of higher education's catalytic role in shaping the microcomputer revolution. Academic computing is viewed here as a social and cultural phenomenon. An in-depth collection of mainly ethnographic studies of the academic computing revolution--its consequences, meanings, and significance--is presented. The…

Shields, Mark A., Ed.

488

Conformal field theories in a periodic potential: Results from holography and field theory  

NASA Astrophysics Data System (ADS)

We study (2+1)-dimensional conformal field theories (CFTs) with a globally conserved U(1) charge, placed in a chemical potential which is periodically modulated along the spatial direction x with zero average: ?(x)=V cos(kx). The dynamics of such theories depends only on the dimensionless ratio V /k, and we expect that they flow in the infrared to new CFTs whose universality class changes as a function of V/k. We compute the frequency-dependent conductivity of strongly coupled CFTs using holography of the Einstein-Maxwell theory in four-dimensional anti-de Sitter space. We compare the results with the corresponding computation of weakly coupled CFTs, perturbed away from the CFT of free, massless Dirac fermions (which describes graphene at low energies). We find that the results of the two computations have significant qualitative similarities. However, differences do appear in the vicinities of an infinite discrete set of values of V/k: the universality class of the infrared CFT changes at these values in the weakly coupled theory, by the emergence of new zero modes of Dirac fermions which are remnants of local Fermi surfaces. The infrared theory changes continuously in holography, and the classical gravitational theory does not capture the physics of the discrete transition points between the infrared CFTs. We briefly note implications for a nonzero average chemical potential.

Chesler, Paul; Lucas, Andrew; Sachdev, Subir

2014-01-01

489

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

490

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

491

OBCOM2006 INT'L CONFERENCE ON MOBILE, UBIQUITOUS & PERVASIVE COMPUTING Information and Communication Technologies (ICT) are critical to  

E-print Network

-driven information and communication technologies, systems and products. Foreseeing importance and impact and Communication Technologies (ICT) are critical to India's future and underpin realization of the Vision 2020 to achieve the convergence of computing, communications and media technologies. Mobile computing and related

Melbourne, University of

492

4D imaging based on the Fresnel incoherent correlation holography  

NASA Astrophysics Data System (ADS)

Fresnel incoherent correlation holography (FINCH) is one of the 3D imaging techniques which records holograms under incoherent illumination. A spatial light modulator (SLM) is used to split the incoherent light reflected/emitted from each object point into two self-coherent spherical beams with different curvatures, and the interference fringes is recorded by a CCD. This technology has been well used in white light reflection imaging and 3D fluorescence microscope imaging. We present a new idea of 4D imaging including three-dimensional spatial information and one-dimensional spectral information on the basis of FINCH. A mathematical model of 4D FINCH system using dual diffractive lenses on a spatial light modulator has been established. We obtained the specific forms of the point spread function, the axial magnification and the reconstruction distance. The experimental results of 3D FINCH imaging are given and one example of 4D imaging with three channels is numerically simulated. And we discussed the key problems of 4D imaging at last.

Shi, Xia; Yuan, Bin; Zhu, Wufeng; Liang, Erjun; Liu, Xiaomin; Ma, Fengying

2014-11-01

493

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

494

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

495

Geometrically induced metastability and holography  

SciTech Connect

We construct metastable configurations of branes and anti-branes wrapping 2-spheres inside local Calabi-Yau manifolds and study their large N duals. These duals are Calabi-Yau manifolds in which the wrapped 2-spheres have been replaced by 3-spheres with flux through them, and supersymmetry is spontaneously broken. The geometry of the non-supersymmetric vacuum is exactly calculable to all orders of the't Hooft parameter, and to the leading order in 1/N. The computation utilizes the same matrix model techniques that were used in the supersymmetric context. This provides a novel mechanism for breaking supersymmetry in the context of flux compactifications.

Aganagic, Mina; Aganagic, Mina; Beem, Christopher; Seo, Jihye; Vafa, Cumrun

2006-10-23

496

Technology.  

ERIC Educational Resources Information Center

Focuses on technology, on advances in such areas as aeronautics, electronics, physics, the space sciences, as well as computers and the attendant progress in medicine, robotics, and artificial intelligence. Describes educational resources for elementary and middle school students, including Web sites, CD-ROMs and software, videotapes, books,…

Online-Offline, 1998

1998-01-01

497

ELECTRON HOLOGRAPHY OF ELECTROMAGNETIC FIELDS - RECENT THEORETICAL ADVANCES.  

SciTech Connect

It has been shown in this work that the Fourier space approach can be fruitfully applied to the calculation of the fields and the associated electron optical phase shift of several magnetic and electrostatic structures, like superconducting vortices in conventional and high-T{sub c} superconductors, reverse biased p-n junctions, magnetic domains and nanoparticles. In all these cases, this novel approach has led to unexpected but extremely interesting results, very often expressed in analytical form, which allow the quantitative and reliable interpretation of the experimental data collected by means of electron holography or of more conventional Lorentz microscopy techniques. Moreover, it is worth recalling that whenever long-range electromagnetic fields are involved, a physical model of the object under investigation is necessary in order to take into account correctly the perturbation of the reference wave induced by the tail of the field protruding into the vacuum. For these reasons, we believe that the Fourier space approach for phase computations we have introduced and discussed in this chapter will represent an invaluable tool for the investigation of electromagnetic fields at the meso- and nano-scale.

BELEGGIA,M.; POZZI, G.; TONOMURA, A.

2007-01-01

498

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

499

Using the Computer with Students with Emotional and Behavioral Disorders. Tech Use Guide: Using Computer Technology.  

ERIC Educational Resources Information Center

This guide examines the computer's role in the educational environment of students with emotional or behavioral disorders (EBD). The computer's power to reinforce students who are reluctant learners, in a personalized learning environment without the complications of adult interactions or behavioral control issues, is noted. Characteristics of EBD…

Fitzgerald, Gail

500

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