Sample records for cao target on-line

  1. Audience Selection for On-line Brand Advertising: Privacy-friendly Social Network Targeting

    E-print Network

    Provost, Foster

    Audience Selection for On-line Brand Advertising: Privacy-friendly Social Network Targeting Foster advertising. Unlike direct-marketing-style on- line advertising, the goal of on-line brand advertising on user-generated content sites, for the purpose of finding good audiences for brand advertising (as

  2. On-Line Target Position Localization in the Presence of Respiration: A Comparison of two Methods

    SciTech Connect

    Hugo, Geoffrey D. [Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI (United States)], E-mail: ghugo@beaumont.edu; Liang Jian; Campbell, Jonathan; Yan Di [Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI (United States)

    2007-12-01

    Purpose: To compare two 'four-dimensional' methods for image-guided target localization in the presence of respiration. Methods and Materials: Four-dimensional image guidance was performed with two methods. A respiration-correlated computed tomography (RCCT) was acquired on a CT simulator, and an average CT (AVG-CT) image was generated from the RCCT. A respiration-correlated cone-beam CT (RC-CBCT) and a free-breathing cone-beam CT (FB-CBCT) were acquired. The 'RCCT method' consisted of calculating the mean target position on both the RCCT and RC-CBCT, registering the RCCT to the RC-CBCT, and determining the shift in the mean target position from the planned mean position. The 'AVG-CT method' consisted of registering the AVG-CT to the FB-CBCT. The ability of each to measure the shift in the mean target position was compared, both in a respiratory phantom and in 8 patients. Results: In phantom, the RCCT and AVG-CT methods were able to measure the true mean target position to within 0.15 cm and 0.10 cm, respectively. In the patient study, the mean error between the methods was 0.13 cm (left-right), 0.14 cm (anterior-posterior), and 0.10 cm (cranio-caudal). The error was not observed to vary with tumor position or magnitude of tumor motion. Conclusions: Respiration may impact the on-line image guidance process. The RCCT method enables localization of the mean tumor position and measurement of changes in the motion pattern, whereas the AVG-CT method is simple, fast, and easily implemented. We found the methods to be nearly equivalent in detecting shifts in the mean tumor position.

  3. A chromodomain protein encoded by the arabidopsis CAO gene is a plant-specific component of the chloroplast signal recognition particle pathway that is involved in LHCP targeting.

    PubMed Central

    Klimyuk, V I; Persello-Cartieaux, F; Havaux, M; Contard-David, P; Schuenemann, D; Meiherhoff, K; Gouet, P; Jones, J D; Hoffman, N E; Nussaume, L

    1999-01-01

    A recessive mutation in Arabidopsis, named chaos (for chlorophyll a/b binding protein harvesting-organelle specific; designated gene symbol CAO), was isolated by using transposon tagging. Characterization of the phenotype of the chaos mutant revealed a specific reduction of pigment binding antenna proteins in the thylakoid membrane. These nuclear-encoded proteins utilize a chloroplast signal recognition particle (cpSRP) system to reach the thylakoid membrane. Both prokaryotes and eukaryotes possess a cytoplasmic SRP containing a 54-kD protein (SRP54) and an RNA. In chloroplasts, the homolog of SRP54 was found to bind a 43-kD protein (cpSRP43) rather than to an RNA. We cloned the CAO gene, which encodes a protein identified as Arabidopsis cpSRP43. The product of the CAO gene does not resemble any protein in the databases, although it contains motifs that are known to mediate protein-protein interactions. These motifs include ankyrin repeats and chromodomains. Therefore, CAO encodes an SRP component that is unique to plants. Surprisingly, the phenotype of the cpSRP43 mutant (i.e., chaos) differs from that of the Arabidopsis cpSRP54 mutant, suggesting that the functions of the two proteins do not strictly overlap. This difference also suggests that the function of cpSRP43 is most likely restricted to protein targeting into the thylakoid membrane, whereas cpSRP54 may be involved in an additional process(es), such as chloroplast biogenesis, perhaps through chloroplast-ribosomal association with chloroplast ribosomes. PMID:9878634

  4. Beam heating of thick targets for on-line mass separators

    NASA Astrophysics Data System (ADS)

    Eaton, T. W.; Ravn, H. L.; Isolde Collaboration

    1987-05-01

    Energy deposition computations have been made on a variety of target materials utilized for the production of radioisotopes by means of 600-MeV protons. Results have shown that, when a proton current of 100 ?A is assumed, dispersed target materials, such as uranium carbide powder and magnesium oxide, are best able to withstand the energy absorption and consequent beam heating without the need of additional cooling. Modified foil targets of titanium, zirconium and tantalum also appear capable of withstanding a full beam current, whilst liquid metal targets in their present form appear to have limitations in terms of the maximum allowable beam current. A redesign of the target container is proposed which allows higher proton currents to be used with these targets also.

  5. Mixtures of molten metals and graphite as targets for on-line mass separators

    NASA Astrophysics Data System (ADS)

    Andreasen, H.; Eder, R.; Grawe, H.; Haas, H.; Hagebø, E.; Hoff, P.; Ravn, H. L.; Steffensen, K.; Sundeil, S.

    1991-06-01

    Targets consisting of fine-grained powders of graphite and metals which do not form thermostable carbides have been investigated. The targets were heated to temperatures well above the melting point of the respective metals. A target of Pt powder mixed with graphite powder is found to be suitable for production of neutron deficient Au isotopes, when irradiated with 910 MeV 3He projectiles. The yields of neutron deficient Cd isotopes from a target of Sn powder mixed with graphite powder are also reported.

  6. A Real Time (On Line) Adaptive Target Detection Technique For An Airborne Millimeter Wave Seeker Design

    NASA Astrophysics Data System (ADS)

    Mahmoodi, A. B.; Kaveh, M.

    1984-01-01

    An adaptive technique for detection of ground stationary targets in a variable clutter environment by an airborne millimeter wave radar is presented. The scheme consists of three basic units: an adaptive decorrelator, a clutter classifier, and a constant false alarm rate (CFAR) processor. Due to the inherent nature of radar returns (echoes), the signal consisting of target(S), clutter(C), and noise(N) are highly correlated. These signals are passed through a whitening matched filters combination. The selection of the parameters of whitening and matched filters is performed through an adaptive identification scheme (Kalman algorithm) using autoregressive(AR) and autoregressive-moving average(ARMA) models. The output of the matched filter is then passed through the pattern classifier unit, which determines whether the given clutter sample belongs to the Log-normal type or Weibull type statistical distribution families, and determines the appropriate detection threshold for the CFAR processor unit.

  7. Recent developments and on-line tests of uranium carbide targets for production of nuclides far from stability

    E-print Network

    Panteleev, V.N; Barzakh, A.E; Fedorov, D.V; Ionan, A.M; Ivanov, V.S; Mezilev, K.A; Molkanov, P.L; Moroz, F.V; Orlov, S.Yu; Volkov, Yu.M; Alyakrinskiy, O; Lanchais, A; Lau, C; Lhersonneau, G; Rizzi, V; Stroe, L; Tecchio, L.B; Dubois, M; Eleon, C; Gaubert, G; Jardin, P; Saint Laurent, M.G; Villari, A.C.C; Essabaa, S; O. Bajeat; Mhamed, C; Leroy, R

    2007-01-01

    The capacity of uranium carbide target materials of different structure and density for production of neutron-rich and heavy neutron-deficient nuclides have been investigated. The yields of Cs and Fr produced by a 1 GeV proton beam of the PNPI synchrocyclotron and release properties of different targets have been measured. The comparison of the yields and release efficiencies of Cs and Fr produced from a high density UC target material and from low density UCx prepared by the ISOLDE method at IRIS in the collaboration with PARRNe group from Orsay are presented. The yields from ISOLDE original target are presented for comparison as well.

  8. The Oxygenase CAO-1 of Neurospora crassa Is a Resveratrol Cleavage Enzyme

    PubMed Central

    Díaz-Sánchez, Violeta; F. Estrada, Alejandro; Limón, M. Carmen; Al-Babili, Salim

    2013-01-01

    The genome of the ascomycete Neurospora crassa encodes CAO-1 and CAO-2, two members of the carotenoid cleavage oxygenase family that target double bonds in different substrates. Previous studies demonstrated the role of CAO-2 in cleaving the C40 carotene torulene, a key step in the synthesis of the C35 apocarotenoid pigment neurosporaxanthin. In this work, we investigated the activity of CAO-1, assuming that it may provide retinal, the chromophore of the NOP-1 rhodopsin, by cleaving ?-carotene. For this purpose, we tested CAO-1 activity with carotenoid substrates that were, however, not converted. In contrast and consistent with its sequence similarity to family members that act on stilbenes, CAO-1 cleaved the interphenyl C?-C? double bond of resveratrol and its derivative piceatannol. CAO-1 did not convert five other similar stilbenes, indicating a requirement for a minimal number of unmodified hydroxyl groups in the stilbene background. Confirming its biological function in converting stilbenes, adding resveratrol led to a pronounced increase in cao-1 mRNA levels, while light, a key regulator of carotenoid metabolism, did not alter them. Targeted ?cao-1 mutants were not impaired by the presence of resveratrol, a phytoalexin active against different fungi, which did not significantly affect the growth and development of wild-type Neurospora. However, under partial sorbose toxicity, the ?cao-1 colonies exhibited faster radial growth than control strains in the presence of resveratrol, suggesting a moderate toxic effect of resveratrol cleavage products. PMID:23893079

  9. Total efficiency of an isotope-separator-on-line production system based on an electron cyclotron resonance ion source associated with a carbon target: The case of SPIRAL 1

    Microsoft Academic Search

    P. Jardin; C. Eleon; W. Farabolini; D. Boilley; M. Dubois; G. Gaubert; J. C. Cornell; C. Huet-Equilbec; N. Lecesne; R. Leroy; J. Y. Pacquet; M. G. Saint Laurent; A. C. C. Villari

    2006-01-01

    An original approach to the time behavior of an isotope-separator-on-line production system is proposed in the case of a production system where the target and the ion source are connected through a conductance much larger than that of the exit hole of the source. One major goal of this article is to derive the analytical expression of the response time

  10. On-Line Use of Three-Dimensional Marker Trajectory Estimation From Cone-Beam Computed Tomography Projections for Precise Setup in Radiotherapy for Targets With Respiratory Motion

    SciTech Connect

    Worm, Esben S., E-mail: esbeworm@rm.dk [Department of Oncology, Aarhus University Hospital, Aarhus (Denmark); Department of Medical Physics, Aarhus University Hospital, Aarhus (Denmark); Hoyer, Morten; Fledelius, Walther [Department of Oncology, Aarhus University Hospital, Aarhus (Denmark); Nielsen, Jens E.; Larsen, Lars P. [Department of Radiology, Aarhus University Hospital, Aarhus (Denmark); Poulsen, Per R. [Department of Oncology, Aarhus University Hospital, Aarhus (Denmark); Institute of Clinical Medicine, Aarhus University (Denmark)

    2012-05-01

    Purpose: To develop and evaluate accurate and objective on-line patient setup based on a novel semiautomatic technique in which three-dimensional marker trajectories were estimated from two-dimensional cone-beam computed tomography (CBCT) projections. Methods and Materials: Seven treatment courses of stereotactic body radiotherapy for liver tumors were delivered in 21 fractions in total to 6 patients by a linear accelerator. Each patient had two to three gold markers implanted close to the tumors. Before treatment, a CBCT scan with approximately 675 two-dimensional projections was acquired during a full gantry rotation. The marker positions were segmented in each projection. From this, the three-dimensional marker trajectories were estimated using a probability based method. The required couch shifts for patient setup were calculated from the mean marker positions along the trajectories. A motion phantom moving with known tumor trajectories was used to examine the accuracy of the method. Trajectory-based setup was retrospectively used off-line for the first five treatment courses (15 fractions) and on-line for the last two treatment courses (6 fractions). Automatic marker segmentation was compared with manual segmentation. The trajectory-based setup was compared with setup based on conventional CBCT guidance on the markers (first 15 fractions). Results: Phantom measurements showed that trajectory-based estimation of the mean marker position was accurate within 0.3 mm. The on-line trajectory-based patient setup was performed within approximately 5 minutes. The automatic marker segmentation agreed with manual segmentation within 0.36 {+-} 0.50 pixels (mean {+-} SD; pixel size, 0.26 mm in isocenter). The accuracy of conventional volumetric CBCT guidance was compromised by motion smearing ({<=}21 mm) that induced an absolute three-dimensional setup error of 1.6 {+-} 0.9 mm (maximum, 3.2) relative to trajectory-based setup. Conclusions: The first on-line clinical use of trajectory estimation from CBCT projections for precise setup in stereotactic body radiotherapy was demonstrated. Uncertainty in the conventional CBCT-based setup procedure was eliminated with the new method.

  11. CAOS: Code for Adaptive Optics Systems

    NASA Astrophysics Data System (ADS)

    Carbillet, M.; Verinaud, C.; Femenia, B.; Riccardi, A.; Fini, L.

    2011-06-01

    The CAOS "system" (where CAOS stands for Code for Adaptive Optics Systems) is properly said a Problem Solving Environment (PSE). It is essentially composed of a graphical programming interface (the CAOS Application Builder) which can load different packages (set of modules). Current publicly distributed packages are the Software Package CAOS (the original adaptive optics package), the Software Package AIRY (an image-reconstruction-oriented package - AIRY stands for Astronomical Image Restoration with interferometrY), the Software Package PAOLAC (a simple CAOS interface for the analytic IDL code PAOLA developed by Laurent Jolissaint - PAOLAC stands for PAOLA within Caos), and a couple of private packages (not publicly distributed but restricted to the corresponding consortia): SPHERE (especially developed for the VLT planet finder SPHERE), and AIRY-LN (a specialized version of AIRY for the LBT instrument LINC-NIRVANA). Another package is also being developed: MAOS (that stands for Multiconjugate Adaptive Optics Simulations), developed for multi-reference multiconjugate AO studies purpose but still in a beta-version form.

  12. Are Lateral Electronic Portal Images Adequate for Accurate On-Line Daily Targeting of the Prostate? Results of a Prospective Study

    SciTech Connect

    Lometti, Michael W. [Department of Radiation Oncology, University of California San Francisco Comprehensive Cancer Center, San Francisco, CA (United States); Physics and Astronomy Department, San Francisco State University, San Francisco, CA (United States)], E-mail: Lometti@radonc17.ucsf.edu; Thurston, Damon [Department of Radiation Oncology, University of California San Francisco Comprehensive Cancer Center, San Francisco, CA (United States); Physics and Astronomy Department, San Francisco State University, San Francisco, CA (United States); Aubin, Michele; Bock, Andrea; Verhey, Lynn [Department of Radiation Oncology, University of California San Francisco Comprehensive Cancer Center, San Francisco, CA (United States); Lockhart, James M.; Bland, Roger [Physics and Astronomy Department, San Francisco State University, San Francisco, CA (United States); Pouliot, Jean; Roach, Mack [Department of Radiation Oncology, University of California San Francisco Comprehensive Cancer Center, San Francisco, CA (United States)

    2008-04-01

    The purpose of this report was to evaluate the magnitude of the error that would be introduced if only a lateral (LAT) portal image, as opposed to a pair of orthogonal images, was used to verify and correct daily setup errors and organ motion in external beam radiation therapy (EBRT) of prostate cancer. The 3-dimensional (3D) coordinates of gold markers from 12 consecutive prostate patients were reconstructed using a pair of orthogonal images. The data were re-analyzed using only the LAT images. Couch moves from the 2-dimensional (2D)-only data were compared with the complete 3D data set. The 2D-only data provided couch moves that differed on average from the 3D data by 2.3 {+-} 3.0, 0.0 {+-} 0.0, and 0.8 {+-} 1.0 mm in the Lat, AP, and SI directions, respectively. Along AP and SI axes, the LAT image provided positional information similar to the orthogonal pair. The error along the LAT axis may be acceptable provided lateral margins are large enough. A LAT-only setup protocol reduces patient treatment times and increases patient throughput. In most circumstances, with exceptions such as morbidly obese patients, acquisition of only a LAT image for daily targeting of the prostate will provide adequate positional precision.

  13. On Line Course Organization

    Microsoft Academic Search

    Ming Zhang; Weichun Wang; Yi Zhou; Yu Yang; Yuhong Xiong; Xiaoming Li

    2007-01-01

    In order to help users access on-line materials with more specific questions, we build a learning portal named Fusion. First\\u000a we develop FusionCrawler, a link classification focused crawler, to download potential course pages. We then use a binary\\u000a classifier to pick out the course pages. After the course pages are identified, we use FusionExtractor, a DOM tree based regular\\u000a expression

  14. On-Line Expeditions

    NSDL National Science Digital Library

    On-line expeditions explores the ocean depths by introducing deep-sea research with interactive features, photos, audio and video clips and middle/high school classroom participation. The topics covered include deep sea geology and hydrothermal vents; history of deep-sea exploration and technology; hydrography and chemical oceanography; marine life and more. Teachers can access a resource guide and activities. The period of time covered is from 2000 to 2004.

  15. Psychiatry On-Line

    NSDL National Science Digital Library

    The field of psychiatry is one that is vast and rather complex, and fortunately for academics and practitioners in the field, the Psychiatry On-Line Web site provides a well-conceived international forum for the discipline. Edited and maintained since 1994 by Dr. Ben Green (a licensed psychiatrist in the United Kingdom), the site features peer-reviewed articles, papers, and case reports from around the world. Part of the Priory group, Psychiatry On-Line contains links to other germane online journals, including the Italian and Brazilian counterparts to the English-language version of Psychiatry On-Line. Visitors will want to browse the archives of previously featured papers, which are thematically organized under topics ranging from affective disorders to substance abuse. The general public will find the section Psychiatry in the Cinema of note, as Dr. Green offers commentary on the depiction of persons with psychiatric conditions (such as schizophrenia) in films like "A Beautiful Mind" and "As Good as it Gets."

  16. www.cell-research.com | Cell Research Qi Cao et al.

    E-print Network

    Cai, Long

    www.cell-research.com | Cell Research Qi Cao et al. 671 npg ORIGINAL ARTICLE Glycogen synthase cancer cells, implicating this kinase as a potential therapeutic target in ovarian cancer. Cell Research sensitizes hepatoma cells to chemotherapy-induced apoptosis [4]. GSK-3 is an evolutionarily conserved

  17. Thomson Tax On - Line

    NSDL National Science Digital Library

    Thomson Tax On-Line is provided by the Thomson Corporation, a major publishing group, to provide information on the latest developments in United Kingdom taxation. The Tax Alert section provides up-to-date UK tax news including government and professional bodies press releases, and tax case decisions. Tax news for the past three months is archived in the Tax Archive section. The Tax Facts section provides tax tables, the current indexation allowance, the current retail price index (RPI), and Inland Revenue Interest Factor Tables.

  18. On-line surfactant monitoring

    SciTech Connect

    Mullen, K.I.; Neal, E.E.; Soran, P.D.; Smith, B. [Los Alamos National Lab., NM (United States). Chemical Science and Technology Div.

    1995-04-01

    This group has developed a process to extract metal ions from dilute aqueous solutions. The process uses water soluble polymers to complex metal ions. The metal/polymer complex is concentrated by ultrafiltration and the metals are recovered by a pH adjustment that frees the metal ions. The metal ions pass through the ultrafiltration membrane and are recovered in a concentrated form suitable for reuse. Surfactants are present in one of the target waste streams. Surfactants foul the costly ultrafiltration membranes. It was necessary to remove the surfactants before processing the waste stream. This paper discusses an on-line device the authors fabricated to monitor the process stream to assure that all the surfactant had been removed. The device is inexpensive and sensitive to very low levels of surfactants.

  19. Introduction and motivation ARTIST and CAOS online tests

    E-print Network

    Horton, Nicholas

    Introduction and motivation ARTIST and CAOS online tests Back to the questions Use of ARTIST nhorton@email.smith.edu http://www.math.smith.edu/nhorton/artisttalk.pdf Nicholas J. Horton Use of ARTIST and CAOS assessments in introductory statistics #12;Introduction and motivation ARTIST and CAOS online

  20. Caos en sistemas clásico-cuánticos

    NASA Astrophysics Data System (ADS)

    Dirani, L. D.; Núñez, J. A.

    Una de las formas de estudiar la existencia de caos en el comportamiento de un sistema clásico-cuántico, es truncando el espacio de Hilbert del sistema cuántico. El objetivo de este trabajo es analizar como afecta dicho truncamiento en la dinámica del sistema. Para tal fin se propone un Hamiltoniano integrable, cuyos valores de expectación asociados a coordenadas y momentos cuánticos responden, por el teorema de Ehrenfest, a un sistema de dos osciladores clásicos con acoplamiento lineal.

  1. On-line system for NMR polarization measurement

    Microsoft Academic Search

    N. Hayashi; M. Boutemeur; S. Bültmann; D. Crabb; D. Day; S. Dhawan; C. Dulya; E. Gülmez; T. Hasegawa; N. Horikawa; S. Ishimoto; T. Iwata; A. Kishi; L. Klostermann; D. Krämer; J. M. Le Goff; A. Magnon; T. O. Niinikoski; A. Rijllart; W. Thiel; S. Trentalange

    1995-01-01

    The on-line system of the SMC polarized target with emphasis on the NMR polarization measurement system is presented. Target subsystems are controlled or monitored by local processors and a host ?-VAX computer which collects all data and provides the user interface. The Global Section scheme is used as a common data block and achieves the synchronization between subsystems. The communication

  2. Human Anatomy On-line

    NSDL National Science Digital Library

    Davis, Marty.

    The Informative Graphics Corporation offers an excellent educational aid/tutorial. Human Anatomy On-line presents an interactive environment for the end user through the use of Java applets, over one hundred images, and animations. What makes this site so interesting is its use of descriptive links which provide names, information, and in some cases a link to an image providing a closer view. Human Anatomy On-line offers both the Interactive Anatomy version for exploration on your own and the Anatomy Lesson for a guided tour. IGC specializes in the development of commercial viewing software, however this site is free to all.

  3. Cao Gío (coin rubbing). Vietnamese attitudes toward health care.

    PubMed

    Yeatman, G W; Dang, V V

    1980-12-19

    Cao gío is the Vietnamese practice of rubbing the skin with a coin to alleviate various common symptoms of illness. The back, neck, head, shoulder, and chest are common sites of application. Although mimicking the lesions of trauma, it is not a harmful procedure, and no complications are known. A survey of 50 Vietnamese living in the United States since 1975 and 1976 has shown marked distrust of American Physicians, owing largely to actual or perceived criticism of cao gío. Acceptance of cao gío as a valid cultural practice will facilitate compliance and adequate medical follow-up. PMID:7441861

  4. WHO's WHO On-Line

    NSDL National Science Digital Library

    WHO's WHO On-Line (first edition) is a collective experiment towards a HYPERbiographical database of people in the Internet. Anyone can submit a listing for themselves, and listings are organized by profession or discipline. Listings can reside on your WWW, Gopher, or FTP server.

  5. Correlations in Single Molecule Photon Statistics: Renewal Indicator Jianshu Cao

    E-print Network

    Cao, Jianshu

    Correlations in Single Molecule Photon Statistics: Renewal Indicator Jianshu Cao Department be revealed through single molecule photon statistical analysis. The standard Poisson indicator defined the transfer matrix method to demonstrate the difference between the two indicators. The relationship between

  6. Antimicrobial Principles of Xian he cao (Agrimonia pilosa).

    PubMed

    Yamaki, M; Kashihara, M; Ishiguro, K; Takagi, S

    1989-04-01

    From the antimicrobially active extract of the Chinese crude drug, Xian he cao ( AGRIMONIA PILOSA Ledb.), four active compounds were isolated. They were all phloroglucinol derivatives and their structures were elucidated on the basis of spectroscopic data. PMID:17262333

  7. MUSLIM WOMEN ON-LINE

    Microsoft Academic Search

    SUSAN BASTANI

    2001-01-01

    On-line communication is a new way for building and maintaining humanrelationships. Geographically dispersed individuals are able to communicate at aspeed and cost superior to telephone, mail, and face-to-face meetings. It isimportant to study the impact of the development of this new mode ofcommunication on human relationships. This paper examines the pattern of onlineinteraction among Muslim women and the kinds of

  8. Volcanoes: On-Line Edition

    NSDL National Science Digital Library

    This is the on-line version of a general interest publication prepared by the United States Geological Survey (USGS). It provides a general introduction to volcanoes and volcanology. Topics include types of volcanoes; types of eruptions; submarine volcanoes; and features associated with volcanic terrains (geysers, hot springs, etc.). There is also discussion of volcanoes and their association to plate tectonics, extraterrestrial volcanoes, monitoring and research efforts, and the impacts of volcanoes on human populations. A text-only version is also available.

  9. On-line business applications

    Microsoft Academic Search

    Martin Greenberger

    1969-01-01

    The federal government is destined to play a key role in the future development of on-line business systems and the structure of the new industry growing up around them. Six points of contact already are evident: 1. Anti-trust action (real and implied) as in the current cases against IBM and AT&T. 2. Inquiries on the practices and policies of the

  10. The CAOS problem-solving environment: recent developments

    NASA Astrophysics Data System (ADS)

    Carbillet, Marcel; Desiderà, Gabriele; Augier, Evelyne; La Camera, Andrea; Riccardi, Armando; Boccaletti, Anthony; Jolissaint, Laurent; Ab Kabir, Diyana

    2010-07-01

    We present recent developments of the CAOS problem-solving environment (PSE), an IDL-based software tool whose original aim was to define and simulate as realistically as possible the behavior of a generic adaptive optics (AO) system -from the atmospheric propagation of light, to the sensing of the wave-front aberrations and the correction through a deformable mirror- but which results in a widely more general tool now. In fact, the different developments made through the last years result in a very versatile numerical tool complete of a global graphical interface (the CAOS Application Builder), a general utilities library (the CAOS Library), and different packages dedicated to a wide range of astronomical-optics-related scientific topics: the original package designed for end-to-end AO system simulations (the Software Package CAOS), an image simulation/ reconstruction package with interferometric capabilities (the Software Package AIRY), an extension of the latter specialized for the LBT instrument LINC-NIRVANA (the Software Package AIRY-LN), an ad hoc package dedicated to the VLT instrument SPHERE (the Software Package SPHERE), and an embedment of the analytical AO simulation code PAOLA (the Software Package PAOLAC).We present the status of the whole CAOS PSE, together with the most recent developments, and plans for the future of the overall tool.

  11. On-line transformer monitoring

    SciTech Connect

    NONE

    1995-10-01

    There are presently many different approaches to transformer monitoring, either on the market or under development. There are also, many different opinions about how on-line monitoring should be accomplished. On the one hand, efforts are being made to develop expert systems that monitor all transformer parameters and generate an estimate of overall transformer condition. On the other hand, a large number of transformer monitors, designed to monitor one or two specific parameters are already on the market. Another important factor to consider in choosing a monitor is who receives the information and how it is transmitted. The ultimate transformer monitor should feed into the supervisory control and data acquisition (Scada) system. This paper discusses the various aspects of this issue including asset protection, cost control, dissolved gases, pinpointing bad bushings and current transformers, hot spot measurement partial discharge, and water-in-oil measurements. 10 figs.

  12. World Competitiveness On-line

    NSDL National Science Digital Library

    This site houses the on-line version of the World Competitiveness Yearbook published by IMD (International Institute for Management Development). The Yearbook aims to "capture in a single index the capacity of a country's economic structure to promote growth." The index of competitiveness is based on 244 indicators of international competitiveness which are grouped into eight factors: domestic economy, internationalization, government, finance, infrastructure, management, science and technology, and people. A total of 46 countries consisting of the 28 Organization for Economic Cooperation and Development (OECD) countries and 18 newly industrializing and emerging countries are ranked. At the site, the overall rankings, rankings in each of the factors and individual country profiles are available.

  13. Incentives in On-Line Education

    ERIC Educational Resources Information Center

    Oslington, Paul

    2005-01-01

    A major problem with on-line education in contemporary universities is securing cooperation of academics. This paper argues that even if the benefits of on-line learning are widely recognised, several incentive problems inhibit academic staff participation. These incentive problems include unverifiability of expertise in on-line learning, the…

  14. On-line data display

    NASA Astrophysics Data System (ADS)

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

    1993-05-01

    A data display system for embedded realtime systems has been developed for use as an operator's user interface and debugging tool. The motivation for development of the On-Line Data Display (ODD) have come from several sources. In particular the design reflects the needs of researchers developing an experimental mobile robot within our laboratory. A proliferation of specialized user interfaces revealed a need for a flexible communications and graphical data display system. At the same time the system had to be readily extensible for arbitrary graphical display formats which would be required for data visualization needs of the researchers. The system defines a communication protocol transmitting 'datagrams' between tasks executing on the realtime system and virtual devices displaying the data in a meaningful way on a graphical workstation. The communication protocol multiplexes logical channels on a single data stream. The current implementation consists of a server for the Harmony realtime operating system and an application written for the Macintosh computer. Flexibility requirements resulted in a highly modular server design, and a layered modular object- oriented design for the Macintosh part of the system. Users assign data types to specific channels at run time. Then devices are instantiated by the user and connected to channels to receive datagrams. The current suite of device types do not provide enough functionality for most users' specialized needs. Instead the system design allows the creation of new device types with modest programming effort. The protocol, design and use of the system are discussed.

  15. The CAOS problem-solving environment: last news

    NASA Astrophysics Data System (ADS)

    Carbillet, M.; Desiderà, G.; Augier, É.; La Camera, A.; Riccardi, A.; Boccaletti, A.; Jolissaint, L.; Ab Kadir, D.

    2010-12-01

    We present recent developments of the CAOS problem-solving environment (PSE), an IDL-based software tool complete of a global graphical interface, a general utilities library, and different specialized scientific packages going from end-to-end and analytical simulations to image simulation/reconstruction, with specialization to given instruments.

  16. Style Components Ari Shapiro Yong Cao Petros Faloutsos

    E-print Network

    Faloutsos, Petros

    the animator to edit directly the style of a motion in intuitive ways. This is the focus of our work. WeStyle Components Ari Shapiro Yong Cao Petros Faloutsos University of California, Los Angeles Figure 1: A sneaky style component is added to a normal walk (left image, left character) to synthesize

  17. An Error Driven Approach to Query Segmentation , Yunbo Cao

    E-print Network

    California at Berkeley, University of

    the performance of state-of-the-art query segmentation methods on a publicly available data set. Categories Keywords Query Segmentation, Search Log Mining, Error Driven 1. INTRODUCTION Tokens (or wordsAn Error Driven Approach to Query Segmentation Wei Zhang§ , Yunbo Cao , Chin-Yew Lin , Jian Su

  18. INVESTIGATION OF PRODUCT-LAYER DIFFUSIVITY FOR CAO SULFATION

    EPA Science Inventory

    The paper gives results of comparisons of the sulfation rates of CaO prepared from Ca(OH)2 and CaCO3, using six types of each precursor derived from the same natural limestones. The particles were small enough to eliminate all transport resistances except diffusion through the Ca...

  19. Competitive algorithms for on-line problems

    Microsoft Academic Search

    Mark S. Manasse; Lyle A. McGeoch; Daniel Dominic Sleator

    1988-01-01

    An on-line problem is one in which an algorithm must handle a sequence of requests, satisfying each request without knowledge of the future requests. Examples of on-line problems include scheduling the motion of elevators, finding routes in networks, allocating cache memory, and maintaining dynamic data structures. A competitive algorithm for an on-line problem has the property that its performance on

  20. On-line monitoring of incinerator emissions

    SciTech Connect

    Mao, Zhuoxiong; Demirgian, J.C.; Hwang, E.

    1993-07-01

    As part of efforts to develop an on-line emissions monitor to detect specific organic compounds for incinerators, the authors tested a Fourier transform infrared spectrometer (FTIR) coupled with a long-path cell (LPC). A mixture of toluene, chlorobenzene, 1,1,1-trichloroethane, and trichloroethylene with elemental ratio C:H:Cl = 3:3.1:0.9 was incinerated in a methane/air flame. The effluent was continuously passed through a heated long-path cell. Eleven target compounds were simultaneously analyzed: methane, toluene, chlorobenzene, 1,1,1-trichloroethane, trichloroethylene, benzene, ethylene, hydrogen chloride, carbon monoxide, carbon dioxide, and water. During the testing, the incinerator temperature and the excess air ratio were deliberately changed to simulate both complete and incomplete combustion conditions in the incinerator. Test results indicate that the FTIR/LPC system can successfully follow concentration changes in the emissions that are associated with the change in the incinerator operations. In addition to carbon monoxide, methane, ethylene, and benzene have been found to be major products of incomplete combustion of the mixture. In this paper, the authors also discuss problems related to obtaining representative calibration standards and to developing adequate methods for continuous monitoring of emissions.

  1. On-line nuclear orientation at KOOL

    NASA Astrophysics Data System (ADS)

    van Walle, E.; Vandeplassche, D.; Wouters, J.; Severijns, N.; Vanneste, L.

    1987-03-01

    Since the previous conference we extended our series of on-line ?-anisotropy measurements in the Z=50 and Z=82 region leading a.o. to the identification of the phase transition in the Au isotopes. Besides ‘conventional’ on-line low temperature nuclear orientation, we introduced the first on-line applications of NMR/ON, on-line ?-anisotropy measurements and ?-decay asymmetry experiments. The intriguing information from these new developments both in the field of nuclear structure and solid state physics is briefly discussed.

  2. Luminescence properties of deformed CaO crystals

    SciTech Connect

    Gonzalez, R. (Departamento de Ingenieria, Escuela Politecnica Superior, Universidad Carlos III, 28913 Leganes Madrid (Spain) Solid State Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6031 (United States)); Chen, Y.; Ballesteros, C. (Solid State Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6031 (United States)); Liu, H.; Williams, G.P. Jr.; Rosenblatt, G.H.; Williams, R.T. (Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27109 (United States)); Gellermann, W. (Department of Physics, University of Utah, Salt Lake City, Utah 84112 (United States))

    1993-03-01

    In deformed CaO crystals, the predominant optical-absorption band at 270 nm and the corresponding luminescence band at 450 nm have been investigated. The absorption coefficient increases linearly with deformation up to [similar to]5% whereas the luminescence intensity saturates earlier. Thermal annealing indicates that appreciable decrease in the absorption begins at [similar to]600 K. In contrast, the luminescence intensity diminishes very rapidly at temperatures not much above room temperature. Time-resolved luminescence indicates that the 450-nm band is composed of two bands: a 475-nm band with lifetimes of [lt]3 ns and [similar to]10 [mu]s, and a 440-nm band with a lifetime of [similar to]1 ms at room temperature. In a test for laser action no optical gain was observed in a deformed CaO crystal.

  3. Power plant diagnostics go on-line

    SciTech Connect

    Rosen, J

    1989-12-01

    The author reports on an attempt to demonstrate the value of on-line diagnostic monitoring to improve maintenance and operations of fossil-fuel power plants. The article describes research on diagnostic monitoring for predictive maintenance by the installation of an on-line performance and condition monitoring system.

  4. Normalizing and restoring on-line handwriting

    Microsoft Academic Search

    Wacef Guerfali; Réjean Plamondon

    1993-01-01

    Preprocessing and normalization techniques for on-line handwriting analysis are crucial steps that usually compromise the success of recognition algorithms. These steps are often neglected and presented as solved problems, but this is far from the truth. An overview is presented of the principal on-line techniques for handwriting preprocessing and word normalization, covering the major difficulties encountered and the various approaches

  5. On-Line Algorithms for Market Equilibria

    Microsoft Academic Search

    Spyros Angelopoulos; Atish Das Sarma; Avner Magen; Anastasios Viglas

    2005-01-01

    We consider a variation of the classical problem of nding prices which guarantee equi- librium in linear markets consisting of divisible goods and agents with money. Specically, we consider on-line algorithms for this problem in which goods are considered on-line, and each good is assigned an irrevocable price. Since exact equilibria will not be found in such a setting, we

  6. On-line diagnosis of sequential systems

    NASA Technical Reports Server (NTRS)

    Sundstrom, R. J.

    1973-01-01

    A model for on-line diagnosis was investigated for discrete-time systems, and resettable sequential systems. Generalized notions of a realization are discussed along with fault tolerance and errors. Further investigation into the theory of on-line diagnosis is recommended for three levels: binary state-assigned level, logical circuit level, and the subsystem-network level.

  7. On line web course for Engineering

    Microsoft Academic Search

    LAURA GRINDEI; AUREL VLAICU; BOGDAN ORZA; VASILE TOPA; CALIN MUNTEANU

    2007-01-01

    This paper describes a new on line web course on Electromagnetics for Engineering, designed by the authors and delivered at the Technical University of Cluj-Napoca (TUCN), Romania. The main results presented are related to the design of the on line course components: graphical interfaces, dynamic web pages created for glossary of terms and virtual library, multimedia applications for the virtual

  8. DE LA CAO AUX CALCULS PAR LMENTS FINIS

    E-print Network

    Paris-Sud XI, Université de

    . . . . . . . . . . . . . . . . . . . . . . . 6 3 Applications au projet européen HIPPI 8 3.1 Passage de la CAO au CAST3M pour les cavités TRIPLE.4 Simulations mécaniques des cavités HIPPI sous pression . . . . . . . . . . . . . 13 3.4.1 Fixation d'accélérateurs internatio- naux, notamment, des projets européens comme HIPPI (High Intensity Pulsed Proton Injector

  9. Factors in on-line loanword adaptation 

    E-print Network

    Haunz, Christine

    2007-01-01

    This thesis investigates the factors influencing the adaptation of foreign words to English, beyond traditional phonological parameters such as sonority distance. The data examined were produced in an on-line adaptation ...

  10. OMIS --- On-Line Monitoring Interface Specification

    Microsoft Academic Search

    Arndt Bode; Thomas Ludwig; Vaidy Sunderam

    1997-01-01

    The On-line Monitoring Interface Specification (OMIS) aims at defining an openinterface for connecting on-line software development tools to parallel programs runningin a distributed environment. Interactive tools like debuggers and performanceanalyzers and automatic tools like load balancers are typical representatives of theconsidered class of tools.The current situation is characterized by the fact that tools either follow the off-lineparadigm by only having

  11. On-line handwritten text categorization

    NASA Astrophysics Data System (ADS)

    Peña Saldarriaga, Sebastián; Viard-Gaudin, Christian; Morin, Emmanuel

    2009-01-01

    As new innovative devices, accepting or producing on-line documents, emerge, managing facilities for these kinds of documents such as topic spotting are required. This means that we should be able to perform text categorization of on-line documents. The textual data available in on-line documents can be extracted through online recognition, a process which produces noise, i.e. errors, in the resulting text. This work reports experiments on categorization of on-line handwritten documents based on their textual contents. We analyze the effect of the word recognition rate on the categorization performances, by comparing the performances of a categorization system over the texts obtained through on-line handwriting recognition and the same texts available as ground truth. Two categorization algorithms (kNN and SVM) are compared in this work. A subset of the Reuters-21578 corpus consisting of more than 2000 handwritten documents has been collected for this study. Results show that accuracy loss is not significant, and precision loss is only significant for recall values of 60%-80% depending on the noise levels.

  12. On-line atomic data access

    SciTech Connect

    Schultz, D.R. [Oak Ridge National Lab., TN (United States); Nash, J.K. [Lawrence Livermore National Lab., CA (United States)

    1996-04-01

    The need for atomic data is one which continues to expand in a wide variety of applications including fusion energy, astrophysics, laser- produced plasma research, and plasma processing. Modern computer database and communications technology nables this data to be placed on-line and obtained by users of the Internet. Presented here is a summary of the observations and conclusions regarding such on-line atomic data access derived from a forum held at the Tenth APS Topical Conference on Atomic Processes in Plasmas.

  13. Book Review: Tian Yu Cao, From Current Algebra to Quantum Chromodynamics: A Case

    E-print Network

    Wüthrich, Christian

    Book Review: Tian Yu Cao, From Current Algebra to Quantum Chromodynamics: A Case for Structural of the International Society for the History of Philosophy of Science In this book, Tian Yu Cao chronicles the decade to the preface, the more philosophical companion piece to the historical book which will cover the longer period

  14. Efficient Top-K Query Calculation in Distributed Networks cao@theory.stanford.edu

    E-print Network

    Bejerano, Gill

    Efficient Top-K Query Calculation in Distributed Networks Pei Cao cao@theory.stanford.edu Zhe Wang This paper presents a new algorithm to answer top-k queries (e.g. "find the k objects with the highest ag) for data series following Zipf distribution. 1 Introduction We investigate algorithms that answer "top-k

  15. CaO as Drop-In Colloidal Catalysts for the Synthesis of Higher Polyglycerols.

    PubMed

    Kirby, Fiona; Nieuwelink, Anne-Eva; Kuipers, Bonny W M; Kaiser, Anton; Bruijnincx, Pieter C A; Weckhuysen, Bert M

    2015-03-23

    Glycerol is an attractive renewable building block for the synthesis of polyglycerols, which find application in the cosmetic and pharmaceutical industries. The selective etherification of glycerol to higher oligomers was studied in the presence of CaO colloids and the data are compared with those obtained from NaOH and CaO. The materials were prepared by dispersing CaO, CaCO3 , or Ca(OH)2 onto a carbon nanofiber (CNF) support. Colloidal nanoparticles were subsequently dispensed from the CNF into the reaction mixture to give CaO colloids that have a higher activity than equimolar amounts of bulk CaO and NaOH. Optimization of the reaction conditions allowed us to obtain a product with Gardner color number <2, containing no acrolein and minimal cyclic byproducts. The differences in the CaO colloids originating from CNF and bulk CaO were probed using light scattering and conductivity measurements. The results confirmed that the higher activity of the colloids originating from CaO/CNF was due to their more rapid formation and smaller size compared with colloids from bulk CaO. We thus have developed a practical method for the synthesis of polyglycerols containing low amounts of Ca. PMID:25684403

  16. Kinetic Study on Desulfurization of Hot Metal Using CaO and CaC2

    NASA Astrophysics Data System (ADS)

    Lindström, David; Sichen, Du

    2015-02-01

    The kinetics and reaction mechanisms of hot metal desulfurization using CaO and CaC2 were studied in a well-controlled atmosphere with a lab scale high temperature furnace. The growths of CaS around CaO and CaC2 were measured and compared at 1773 K (1500 °C). The parabolic rate constant was evaluated to be 5 × 10-7 (cm s-1) on CaO particles, and 2.4 × 10-7 (cm s-1) on CaC2. The bigger parabolic constant of CaO resulted in more efficient desulfurization. Agglomerates and big CaO particles led to 2CaO·SiO2 formation which hindered further utilization of CaO for desulfurization. The 2CaO·SiO2 formation was favoured by a high oxygen potential. Since the desulfurization reaction of CaO not only produced CaS but also oxygen, the local oxygen concentration around big CaO particles was higher than around small particles.

  17. Eye-hand coordination in on-line visuomotor adjustments.

    PubMed

    Abekawa, Naotoshi; Inui, Toshio; Gomi, Hiroaki

    2014-05-01

    When we perform a visually guided reaching action, the brain coordinates our hand and eye movements. Eye-hand coordination has been examined widely, but it remains unclear whether the hand and eye motor systems are coordinated during on-line visuomotor adjustments induced by a target jump during a reaching movement. As such quick motor responses are required when we interact with dynamic environments, eye and hand movements could be coordinated even during on-line motor control. Here, we examine the relationship between online hand adjustment and saccadic eye movement. In contrast to the well-known temporal order of eye and hand initiations where the hand follows the eyes, we found that on-line hand adjustment was initiated before the saccade onset. Despite this order reversal, a correlation between hand and saccade latencies was observed, suggesting that the hand motor system is not independent of eye control even when the hand response was induced before the saccade. Moreover, the latency of the hand adjustment with saccadic eye movement was significantly shorter than that with eye fixation. This hand latency modulation cannot be ascribed to any changes of visual or oculomotor reafferent information as the saccade was not yet initiated when the hand adjustment started. Taken together, the hand motor system would receive preparation signals rather than reafference signals of saccadic eye movements to provide quick manual adjustments of the goal-directed eye-hand movements. PMID:24346260

  18. Arts & Lecture Series Free on-line

    E-print Network

    Quigg, Chris

    .gov/culture ARTS SE RI ES Mike Super (Winner of NBC's hit TV show, Phenomenon!) Taylor 2 Dance African Guitar, down-to-earth style Taylor 2 Dance Mike Super #12;Fermilab Arts Series 3 the athleticism, humorFermilab Arts & Lecture Series 2014­15 Free on-line ticketing available! Check our web page at fnal

  19. On-Line Construction of Suffix Trees

    Microsoft Academic Search

    Esko Ukkonen

    1995-01-01

    Abstract: An on-line algorithm is presented for constructing the suffix tree for a given string in time linear in the length of the string. The new algorithm has the desirable property of processing the string symbol by symbol from left to right. It has always the suffix tree for the scanned part of the string ready. The method is developed

  20. On-Line Multi-Threaded Paging

    Microsoft Academic Search

    Esteban Feuerstein; Alejandro Strejilevich De Loma

    2002-01-01

    In this paper we introduce a generalization of Paging to the case where there are many threads of requests. This models situations in which the requests come from more than one independent source. Hence, apart from deciding how to serve a request, at each stage it is necessary to decide which request to serve among several possibilities. Four different on-line

  1. LUST ON-LINE CALCULATOR INTRODUCTION

    EPA Science Inventory

    EPA has developed a suite of on-line calculators to assist in performing site assessment and modeling calculations for leaking underground storage tank sites (http://www.epa.gov/athens/onsite). The calculators are divided into four types: parameter estimation, models, scientific...

  2. On-line controlled documents: Lessons learned

    SciTech Connect

    Cochrell, R.C.; Steele, C.M.

    1995-06-01

    Placing Controlled Documents on-line on a computer network seems like the solution to many problems, one being distribution, with a path toward a paperless office. However, many problems presented themselves as we were designing the system and placing the documents on-line. Although we planned and established a Process Management Team to help work out the bugs, we still encountered many obstacles in the process. This presentation will cover the ``trials and tribulations`` of placing Controlled Documents on a computer network at three different sites. We will discuss the process we went through, the problems we encountered, the software we used, and how we got management to buy into the process.

  3. On-line diagnosis of unrestricted faults

    NASA Technical Reports Server (NTRS)

    Meyer, J. F.; Sundstrom, R. J.

    1974-01-01

    A formal model for the study of on-line diagnosis is introduced and used to investigate the diagnosis of unrestricted faults. A fault of a system S is considered to be a transformation of S into another system S' at some time tau. The resulting faulty system is taken to be the system which looks like S up to time tau, and like S' thereafter. Notions of fault tolerance error are defined in terms of the resulting system being able to mimic some desired behavior as specified by a system similar to S. A notion of on-line diagnosis is formulated which involves an external detector and a maximum time delay within which every error caused by a fault in a prescribed set must be detected. It is shown that if a system is on-line diagnosable for the unrestricted set of faults then the detector is at least as complex, in terms of state set size, as the specification. The use of inverse systems for the diagnosis of unrestricted faults is considered. A partial characterization of those inverses which can be used for unrestricted fault diagnosis is obtained.

  4. Secondary ionization coefficient ? of MgO, SrO and CaO and the correlation between ? and charge accumulated on CaO in argon

    NASA Astrophysics Data System (ADS)

    Suzuki, S.; Itoh, H.

    2014-12-01

    An experimental investigation of Townsend's secondary ionization coefficient ? is carried out for MgO, SrO and CaO film electrodes. These oxides are utilized, or are to be utilized, in next-generation plasma display panels. All of the experiments are performed in argon. In particular, in the case of CaO film, our attention is attracted to the effect of charge accumulated on CaO film. For this purpose, the breakdown voltage Vs is observed from waveforms of the gap voltage and charge accumulated on the dielectric film electrodes with the repeated breakdown. Townsend's criterion is utilized to estimate ? from the breakdown voltage. In the case of the CaO film, ? increases gradually with repeated breakdowns and reaches a stationary value. The increase of ? is considered to be due to the charge that accumulates on the dielectric electrode triggering the next breakdown. Therefore, it is concluded that the increased ? is sustained by a combined process consisting of restarted electrons that have accumulated on the CaO film and the original ? action, as observed in metallic electrodes in a low-pressure gas discharge.

  5. A Distributed System for Learning Programming On-Line

    ERIC Educational Resources Information Center

    Verdu, Elena; Regueras, Luisa M.; Verdu, Maria J.; Leal, Jose P.; de Castro, Juan P.; Queiros, Ricardo

    2012-01-01

    Several Web-based on-line judges or on-line programming trainers have been developed in order to allow students to train their programming skills. However, their pedagogical functionalities in the learning of programming have not been clearly defined. EduJudge is a project which aims to integrate the "UVA On-line Judge", an existing on-line

  6. [Investigation on bookstore block-printed editions of Zheng He Ben Cao in Ming Dynasty].

    PubMed

    Li, Jian; Zhang, Ruixian; Zhang, Wei; Liang, Fei

    2011-05-01

    Many editions of Zheng He Ben Cao was published in Ming Dynasty. The bookstore block-printed editions recorded are Liu's Rixintang Edition in Zhengde year 14 (1519 AD), Yangxianchun Gui Renzai Edition and Jinling Tang's Fuchuntang Edition in Wanli year 6 (1578 AD). Rixintang Edition took Chenghua year 4 (1478 AD) Edition as source text and inherited the mistakes too. Guirenzai Version took Rixintang Version as source text, thereafter, Fuchuntang version took Guirenzai Version. Errors, missing, rough collation handed down from one version to another, thus in Fuchuntang Version, mistakes jumped out on each page. In order to attract more buyers, the bookstores erase the name Chong Xiu Zheng He Jing Shi Zheng Lei Bei Yong Ben Cao and change the name to Da Guan Ben Cao Gang Mu Quan Shu or Da Guan Ben Cao. PMID:21781550

  7. CAOS: a numerical simulation tool for astronomical adaptive optics (and beyond)

    NASA Astrophysics Data System (ADS)

    Carbillet, Marcel; Verinaud, Christophe; Guarracino, Mario; Fini, Luca; Lardiere, Olivier; Le Roux, Brice; Puglisi, Alfio T.; Femenia, Bruno; Riccardi, Armando; Anconelli, Barbara; Correia, Serge; Bertero, Mario; Boccacci, Patrizia

    2004-10-01

    We present recent developments of the CAOS "system", an IDL-based Problem Solving Environment (PSE) whose original aim was to define and simulate as realistically as possible the behavior of a generic adaptive optics (AO) system, from the atmospheric propagation of light, to the sensing of the wave-front aberratoins and the correction through a deformable mirror. The different developments made through the last 7 years result in a very versatile numerical tool complete of a global graphical interface (the CAOS Application Builder), and different specialized scientific packages: the original one designed for AO system simulations (the Software Package CAOS), an image reconstruction package with interferometric capabilities (the Software Package AIRY), and a more recent one being built and dedicated to multiconjugate AO (the Software Package MAOS). We present the status of the whole CAOS "system"/PSE, together with the most recent developments, including parallelization strategy considerations, examples of application, and plans for the next future.

  8. [Academic heritage of Jiu huang ben cao (Materia Medica for Relief of Famines) in Japan].

    PubMed

    He, Huiling; Xiao, Yongzhi

    2014-11-01

    Jiu huang ben cao (Materia Medica for Relief of Famines) was the first monograph on famines herbal in the history of China, which creates a new research field of edible plants. Around the middle and late 17th century, Jiu huang ben cao was spread to Japan and aroused great attention of famous Japanese herbalists. Thus, all versions of different edition systems were circulated in Japan. Later, some famous Japanese scholar ssuccessively quoted texts of Jiu huang ben cao from the Nong zheng quan shu (Whole book on Agricultural Administration) spread in Japan, and block-printed it as an independent work. As a result, Jiu huang ben cao virtually circulated widely in Japan. PMID:25620360

  9. Nonisothermal Thermogravimetric Analysis of Thai Lignite with High CaO Content

    PubMed Central

    Pintana, Pakamon

    2013-01-01

    Thermal behaviors and combustion kinetics of Thai lignite with different SO3-free CaO contents were investigated. Nonisothermal thermogravimetric method was carried out under oxygen environment at heating rates of 10, 30, and 50°C min?1 from ambient up to 1300°C. Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) methods were adopted to estimate the apparent activation energy (E) for the thermal decomposition of these coals. Different thermal degradation behaviors were observed in lignites with low (14%) and high (42%) CaO content. Activation energy of the lignite combustion was found to vary with the conversion fraction. In comparison with the KAS method, higher E values were obtained by the FWO method for all conversions considered. High CaO lignite was observed to have higher activation energy than the low CaO coal. PMID:24250259

  10. Dynamics of condensation in totally asymmetric inclusion process Jiarui Cao, Paul Chleboun and Stefan Grosskinsky

    E-print Network

    Sengun, Mehmet Haluk

    Dynamics of condensation in totally asymmetric inclusion process Jiarui Cao, Paul Chleboun and Stefan Grosskinsky Mathematics Institute, The University of Warwick Introduction Totally asymmetric etc.) concentrate on a vanishing fraction of the volume. Recent studies show that diverse phenomena

  11. On Line Power Plant Performance Monitoring

    E-print Network

    Ahner, D. J.; Priestley, R. R.

    and reporting o Output to various devices such as operator console, manager's console and hard copy devices Figure I displays the various functions of the Performance Monitor. M??aured Data Irom plant computer orDAS Off lin. o&leula,lona, trending... on the normal operator control console. The primary piece of hardware required by a performance monitoring system is computer with a proven multi-tasking operating system to serve simultaneous on-line and off-line processing duties. Instrumentation and Data...

  12. On-line structural parameter identification

    NASA Technical Reports Server (NTRS)

    Thau, F. E.; Montgomery, R. C.; Horner, G. C.

    1981-01-01

    Algorithms are presented for on-line parameter identification of structural dynamic systems. As an example, they are used to calculate the parameters of a modal model of a flexible beam. The algorithms are tested using hardware consisting of a 12 ft. beam with four voice coil actuators and nine noncontacting displacement sensors. They are programmed in a CDC Cyber 175 digital computer which provides input command signals for the actuators, reads the sensor data, and processes the algorithm to calculate consistent estimates of the modal parameters of the beam. Experimental results are compared with those of simulation analysis.

  13. On-line diagnosis of unrestricted faults

    NASA Technical Reports Server (NTRS)

    Meyer, J. F.; Sundstrom, R. J.

    1975-01-01

    Attention is given to the formal development of the notion of a discrete-time system and the associated concepts of fault, result of a fault, and error. The considered concept of on-line diagnosis is formalized and a diagnosis using inverse machines is discussed. The case of an inverse which is lossless is investigated. It is found that in such a case the class of unrestricted faults can be diagnosed with a delay equal to the delay of losslessness of the inverse system.

  14. On-line valve monitoring and diagnosis

    SciTech Connect

    Schreurs, J. (Westinghouse Science and Technology Center, Pittsburgh, PA (US)); Bednar, F. (Westinghouse NATD, Monroeville, PA (US))

    1990-01-01

    The valve monitor system is described. It can monitor a large number of valves on-line with a minimum of cabling to be installed. It can also be used to diagnose individual valves off-line with temporary cabling and nonintrusive sensors. Trend analysis can be performed when historic data and baseline records are available. The sensor data and the diagnostic capabilities allow plant personnel to assess the remaining safe life of a valve much more accurately than is possible without sensors. This, in turn, allows the utilities to justify maintenance schedules based on need rather than calendar time.

  15. Action Research and Evaluation On Line

    NSDL National Science Digital Library

    Action research consists of a family of research methodologies which pursue action and research outcomes at the same time. Areol, action research and evaluation on line, is a 14-week public course offered each semester as a public service by Southern Cross University and the Southern Cross Institute of Action Research. There are four orientation sessions. The first will give students some idea of the commitment in time that it may take to engage properly in the program. The second overviews the program. The third discusses the setting up of learning groups as an associated activity.

  16. GOLDâ?¢ Genomes OnLine Database

    NSDL National Science Digital Library

    Free for academic and non-commercial use, the Genomes OnLine Database (GOLD) is an internet "resource for comprehensive access to information regarding complete and ongoing genome projects around the world. GOLD provides the largest available and most detailed monitoring of genome sequencing projects." This recently updated database presently contains 173 Published Complete Genomes (including 4 chromosomes, 445 Prokaryotic Ongoing Genomes, and 384 Eukaryotic Ongoing Genomes (including 8 chromosomes). The GOLD search engine allows users to search by Domain, Status, Institution, Phylogeny, and more. This site also contains GOLD-specific Links, related Other Links, and links to References, Statistics, and GOLD News.

  17. Gated Treatment Delivery Verification With On-Line Megavoltage Fluoroscopy

    SciTech Connect

    Tai An, E-mail: atai@mcw.ed [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Christensen, James D.; Gore, Elizabeth [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Khamene, Ali [Imaging and Visualization Department, Siemens AG, Princeton, NJ (United States); Boettger, Thomas [Oncology Care Systems, Siemens AG, Heidelberg (Germany); Li, X. Allen [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States)

    2010-04-15

    Purpose: To develop and clinically demonstrate the use of on-line real-time megavoltage (MV) fluoroscopy for gated treatment delivery verification. Methods and Materials: Megavoltage fluoroscopy (MVF) image sequences were acquired using a flat panel equipped for MV cone-beam CT in synchrony with the respiratory signal obtained from the Anzai gating device. The MVF images can be obtained immediately before or during gated treatment delivery. A prototype software tool (named RTReg4D) was developed to register MVF images with phase-sequenced digitally reconstructed radiograph images generated from the treatment planning system based on four-dimensional CT. The image registration can be used to reposition the patient before or during treatment delivery. To demonstrate the reliability and clinical usefulness, the system was first tested using a thoracic phantom and then prospectively in actual patient treatments under an institutional review board-approved protocol. Results: The quality of the MVF images for lung tumors is adequate for image registration with phase-sequenced digitally reconstructed radiographs. The MVF was found to be useful for monitoring inter- and intrafractional variations of tumor positions. With the planning target volume contour displayed on the MVF images, the system can verify whether the moving target stays within the planning target volume margin during gated delivery. Conclusions: The use of MVF images was found to be clinically effective in detecting discrepancies in tumor location before and during respiration-gated treatment delivery. The tools and process developed can be useful for gated treatment delivery verification.

  18. On-line process control monitoring system

    DOEpatents

    O'Rourke, Patrick E. (Martinez, GA); Van Hare, David R. (Aiken, SC); Prather, William S. (Augusta, GA)

    1992-01-01

    An on-line, fiber-optic based apparatus for monitoring the concentration of a chemical substance at a plurality of locations in a chemical processing system comprises a plurality of probes, each of which is at a different location in the system, a light source, optic fibers for carrying light to and from the probes, a multiplexer for switching light from the source from one probe to the next in series, a diode array spectrophotometer for producing a spectrum from the light received from the probes, and a computer programmed to analyze the spectra so produced. The probes allow the light to pass through the chemical substance so that a portion of the light is absorbed before being returned to the multiplexer. A standard and a reference cell are included for data validation and error checking.

  19. NASDA's Advanced On-Line System (ADOLIS)

    NASA Technical Reports Server (NTRS)

    Yamamoto, Yoshikatsu; Hara, Hideo; Yamada, Shigeo; Hirata, Nobuyuki; Komatsu, Shigenori; Nishihata, Seiji; Oniyama, Akio

    1993-01-01

    Spacecraft operations including ground system operations are generally realized by various large or small scale group work which is done by operators, engineers, managers, users and so on, and their positions are geographically distributed in many cases. In face-to-face work environments, it is easy for them to understand each other. However, in distributed work environments which need communication media, if only using audio, they become estranged from each other and lose interest in and continuity of work. It is an obstacle to smooth operation of spacecraft. NASDA has developed an experimental model of a new real-time operation control system called 'ADOLIS' (ADvanced On-Line System) adopted to such a distributed environment using a multi-media system dealing with character, figure, image, handwriting, video and audio information which is accommodated to operation systems of a wide range including spacecraft and ground systems. This paper describes the results of the development of the experimental model.

  20. On-line tritium production monitor

    DOEpatents

    Mihalczo, J.T.

    1993-11-23

    A scintillation optical fiber system for the on-line monitoring of nuclear reactions in an event-by-event manner is described. In the measurement of tritium production one or more optical fibers are coated with enriched {sup 6}Li and connected to standard scintillation counter circuitry. A neutron generated {sup 6}Li(n)T reaction occurs in the coated surface of {sup 6}Li-coated fiber to produce energetic alpha and triton particles one of which enters the optical fiber and scintillates light through the fiber to the counting circuit. The coated optical fibers can be provided with position sensitivity by placing a mirror at the free end of the fibers or by using pulse counting circuits at both ends of the fibers. 5 figures.

  1. On-line tritium production monitor

    DOEpatents

    Mihalczo, John T. (Oak Ridge, TN)

    1993-01-01

    A scintillation optical fiber system for the on-line monitoring of nuclear reactions in an event-by-event manner is described. In the measurement of tritium production one or more optical fibers are coated with enriched .sup.6 Li and connected to standard scintillation counter circuitry. A neutron generated .sup.6 Li(n )T reaction occurs in the coated surface of .sup.6 Li-coated fiber to produce energetic alpha and triton particles one of which enters the optical fiber and scintillates light through the fiber to the counting circuit. The coated optical fibers can be provided with position sensitivity by placing a mirror at the free end of the fibers or by using pulse counting circuits at both ends of the fibers.

  2. On-line chemical composition analyzer development

    SciTech Connect

    Roberts, M.J.; Garrison, A.A.; Muly, E.C.; Moore, C.F.

    1992-02-01

    The energy consumed in distillation processes in the United States represents nearly three percent of the total national energy consumption. If effective control of distillation columns can be accomplished, it has been estimated that it would result in a reduction in the national energy consumption of 0.3%. Real-time control based on mixture composition could achieve these savings. However, the major distillation processes represent diverse applications and at present there does not exist a proven on-line chemical composition sensor technology which can be used to control these diverse processes in real-time. This report presents a summary of the findings of the second phase of a three phase effort undertaken to develop an on-line real-time measurement and control system utilizing Raman spectroscopy. A prototype instrument system has been constructed utilizing a Perkin Elmer 1700 Spectrometer, a diode pumped YAG laser, two three axis positioning systems, a process sample cell land a personal computer. This system has been successfully tested using industrially supplied process samples to establish its performance. Also, continued application development was undertaken during this Phase of the program using both the spontaneous Raman and Surface-enhanced Raman modes of operation. The study was performed for the US Department of Energy, Office of Industrial Technologies, whose mission is to conduct cost-shared R D for new high-risk, high-payoff industrial energy conservation technologies. Although this document contains references to individual manufacturers and their products, the opinions expressed on the products reported do not necessarily reflect the position of the Department of Energy.

  3. Kinetics of mixed rare earths minerals decomposed by CaO with NaCl-CaCl 2 melting salt

    Microsoft Academic Search

    Xue BIAN; Jianli CHEN; Zhihua ZHAO; Shaohua YIN; Yao LUO; Fengyun ZHANG; Wenyuan WU

    2010-01-01

    For increasing reaction rate and reducing decomposing temperature, TG-DTA, XRD, SEM and Chemical analysis were used to study the kinetics of mixed rare earths minerals decomposed by CaO with NaCl-CaCl2. The results showed that the reaction rate increased with increasing of NaC-CaCl2 addition, CaO addition, and decomposition temperature. The kinetics of mixed rare earths minerals decomposed by CaO conformed to

  4. On-Line Algorithms for Market Equilibria Spyros Angelopoulos

    E-print Network

    Magen, Avner

    On-Line Algorithms for Market Equilibria Spyros Angelopoulos Atish Das Sarma Avner Magen Anastasios that will appear in the market in the future. This work focuses on the performance of on-line algorithms consisting of divisible goods and agents with money. Specifically, we consider on-line algorithms

  5. On-Line Learning: One Way to Bring People Together

    ERIC Educational Resources Information Center

    Goff-Kfouri, Carol Ann

    2006-01-01

    The purpose of this study was to demonstrate the benefits of on-line learning for adult learners and to further demystify three common misconceptions concerning on-line learning: students certainly do receive support from their on-line professors, the professor is pro-active rather than passive, and students may be more motivated to learn than in…

  6. INNOVATIVE CONCEPTS FOR ON-LINE SYNCHRONOUS GENERATOR PARAMETER ESTIMATION

    E-print Network

    INNOVATIVE CONCEPTS FOR ON-LINE SYNCHRONOUS GENERATOR PARAMETER ESTIMATION by Elias Kyriakides FOR ON-LINE SYNCHRONOUS GENERATOR PARAMETER ESTIMATION by Elias Kyriakides has been approved December ABSTRACT A method to identify synchronous generator parameters from on-line measurements is presented

  7. On-line hemodiafiltration. Gold standard or top therapy?

    PubMed

    Passlick-Deetjen, Jutta; Pohlmeier, Robert

    2002-01-01

    In summary, on-line HDF is an extracorporeal blood purification therapy with increased convective removal of uremic toxins as compared to the most frequently used low- or high-flux HD therapy. The clinical advantages of on-line HDF have shown to be dose dependent, which makes on-line HDF superior to other therapies with less convective solute removal. Among the therapies with high convective solute removal, i.e. on-line HDF, on-line HF and double high-flux dialysis, it is difficult to finally decide on the best therapy, as direct comparisons of these therapies are not performed. Theoretical considerations like the relative to on-line HDF lower achievable Kt/Vurea with on-line HF, allow to state that on-line HDF is the top therapy now available for patients with ESRD. A gold standard may be defined as something with which everything else is compared if one tries to establish it in the respective field. In order to declare on-line HDF as the gold standard in renal replacement therapy, we need more direct comparisons of on-line HDF with other therapies, including mortality as an outcome parameter. However, based on our current knowledge, it does not seem to be too speculative that high-quality clinical studies will establish on-line HDF in the next years as the new gold standard in renal replacement therapy. PMID:12101956

  8. On-line biomass measurements in bioreactor cultivations: comparison study of two on-line probes

    Microsoft Academic Search

    K. Kiviharju; K. Salonen; U. Moilanen; E. Meskanen; M. Leisola; T. Eerikäinen

    2007-01-01

    Two on-line probes for biomass measurement in bioreactor cultivations were evaluated. One probe is based on near infrared\\u000a (NIR) light absorption and the other on dielectric spectroscopy. The probes were used to monitor biomass production in cultivations\\u000a of several different microorganisms. Differences in NIR probe response compared to off-line measurement methods revealed that\\u000a the most significant factor affecting the response

  9. ULTRASONIC DETERMINATION OF ELASTIC MODULUS OF MARBLES RELATION WITH POROSITY AND CaO %

    E-print Network

    H. Sarpün; V. Özkan; S. Tuncel

    Since ancient Greek times marble has been used for decoration and for sculpture. In this paper, we have analyzed marble samples, which were selected according to their porosity and the proportion of CaO values, with ultrasonic velocity measurement methods. Elastic modulus was evaluated from longitudinal and transverse velocity of ultrasonic wave propagation in marble samples. Our results indicate that the elastic modulus shows linear dependence to the porosity and the proportion of CaO. The correlation factor of fitted line is about 0.9. Also the longitudinal velocity shows more linearity than the transverse velocity.

  10. ChemScan—an on-line ultraviolet spectral process analyzer

    NASA Astrophysics Data System (ADS)

    Beemster, Bernard J.; Schlager, Kenneth J.

    1996-03-01

    ChemScan is a product line of ultraviolet, on-line process analyzers that grew out of a NASA SBIR program targeted at on-line monitoring of plant nutrient solutions as part of the NASA CELSS program. The original goal for NASA was to provide on-line measurement of all the hydroponic plant nutrients necessary to develop and maintain a plant growth facility in space. Two different spectrometric techniques were applied to provide on-line measurements of all plant nutrients. One technology, ultraviolet absorption spectrometry, provided on-line measurements of nitrate, iron, and some of the transition metal nutrients. This technology not only demonstrated a capability to meet these CELSS needs but has now been incorporated into a family of commercial analytical instruments used for environmental process monitoring and control applications. A second technology, Liquid Atomic Emission Spectrometry (LAES), also originated in this same NASA SBIR, is still at an earlier stage of development and is expected to reach the market in the next 18-24 months.

  11. Thermodynamics of strained vanadium dioxide single crystals Yijia Gu, Jinbo Cao, Junqiao Wu, and Long-Qing Chen

    E-print Network

    Chen, Long-Qing

    Thermodynamics of strained vanadium dioxide single crystals Yijia Gu, Jinbo Cao, Junqiao Wu;Thermodynamics of strained vanadium dioxide single crystals Yijia Gu,1,a Jinbo Cao,2 Junqiao Wu,2 and Long Vanadium dioxide undergoes a metal­insulator transition, in which the strain condition plays an important

  12. The in On-line Games Wu-chang Feng

    E-print Network

    for traditional video games & augmented reality games #12;Got MIPS? The Need for Speed in On-line Games, SC|051 Got MIPS? The in On-line Games Wu-chang Feng Portland State University Sponsored by: #12;Got MIPS? The Need for Speed in On-line Games, SC|05 MasterWorks, 11/15/2005 2 Outline n From client to server n

  13. DOE-EPRI On-Line Monitoring Implementation Guidelines

    SciTech Connect

    E. Davis, R. Bickford

    2003-01-02

    Industry and EPRI experience at several plants has shown on-line monitoring to be very effective in identifying out-of-calibration instrument channels or indications of equipment-degradation problems. The EPRI implementation project for on-line monitoring has demonstrated the feasability of on-line monitoring at several participating nuclear plants. The results have been very enouraging, and substantial progress is anticipated in the coming years.

  14. An optimal on-line algorithm for metrical task system

    Microsoft Academic Search

    Allan Borodin; Nathan Linial; Michael E. Saks

    1992-01-01

    In practice, almost all dynamic systems require decisions to be made on-line, without full knowledge of their future impact on the system. A general model for the processing of sequences of tasks is introduced, and a general on-line decision algorithm is developed. It is shown that, for an important class of special cases, this algorithm is optimal among all on-line

  15. ANNUAL TREE GROWTH PREDICTIONS FROM PERIODIC MEASUREMENTS Quang V. Cao1

    E-print Network

    Cao, Quang V.

    ANNUAL TREE GROWTH PREDICTIONS FROM PERIODIC MEASUREMENTS Quang V. Cao1 Abstract--Data from annual techniques were employed to model annual changes of individual trees in terms of diameters, heights used to fit the same tree growth equations. Two methods of estimating parameters of the annual growth

  16. PERSPECTIVES Hu and Cao 179 6. United Nations Environment Programme. Inte-

    E-print Network

    Zexian, Cao

    - vere water scarcity. Some experts believe that the water crisis may come before an energy crisis Advance access publication 14 May 2014 MULTIDISCIPLINARY Water science on the molecular scale: new insights into the characteristics of water Jun Hu1, and Zexian Cao2 The highest good is like that of water

  17. 3D Fingerprint Phantoms Sunpreet S. Arora, Kai Cao and Anil K. Jain

    E-print Network

    ) printing the 3D fingerprint phantoms using a commodity 3D printer. Preliminary experimental results show3D Fingerprint Phantoms Sunpreet S. Arora, Kai Cao and Anil K. Jain Department of Computer Science, we propose creating 3D fin- gerprint phantoms (phantoms or imaging phantoms are specially designed

  18. Stem Cell Repair of Central Nervous System Qilin Cao,1,2

    E-print Network

    Harkema, Susan

    and Brundin, 1988; Hoffer and Olson, 1991). The use of neural stem cells (NSCs) as a source of multipotentReview Stem Cell Repair of Central Nervous System Injury Qilin Cao,1,2 Richard L. Benton,1 of Louisville School of Medicine, Louisville, Kentucky Neural stem cells (NSCs) have great potential as a ther

  19. Strain effects in low-dimensional transition metal oxides Jinbo Cao a,b,

    E-print Network

    Wu, Junqiao

    Strain effects in low-dimensional transition metal oxides Jinbo Cao a,b, *, Junqiao Wu a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 1.1. Spin­lattice­charge coupling in transition metal oxides/nanowires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 3.2. Phase transitions and domain physics under strain

  20. Evaluation of Methods for Calibrating a Tree Taper Quang V. Cao and Jing Wang

    E-print Network

    Cao, Quang V.

    biometrics Evaluation of Methods for Calibrating a Tree Taper Equation Quang V. Cao and Jing Wang quantiles performed slightly better than the other calibration methods, based on two evaluation statistics calibration methods were investigated, including the use of fixed- and mixed-effects models, as well

  1. A Model of Stroke Extraction from Chinese Character Images Ruini Cao, Chew Lim Tan

    E-print Network

    Tan, Chew Lim

    A Model of Stroke Extraction from Chinese Character Images Ruini Cao, Chew Lim Tan School a new model of stroke extraction for Chinese characters. One problem for stroke extraction is how to extract primary strokes. Another major problem is to solve the segmentation ambiguities at intersection

  2. Ubiquitous Intelligence in Agent Mining Longbing Cao, Dan Luo, and Chengqi Zhang

    E-print Network

    Cao, Longbing

    Ubiquitous Intelligence in Agent Mining Longbing Cao, Dan Luo, and Chengqi Zhang Faculty, most of them can be described in terms of or related to ubiquitous intelligence. It is certainly very important to define, specify, represent, analyze and utilize ubiquitous intelligence in agents, data mining

  3. Sensor Relocation in Mobile Sensor Networks Guiling Wang, Guohong Cao, Tom La Porta, and Wensheng Zhang

    E-print Network

    Zhang, Wensheng

    the sensor network, which means that the relocation should minimize its effect on the current sensingSensor Relocation in Mobile Sensor Networks Guiling Wang, Guohong Cao, Tom La Porta, and Wensheng of research on using mobility in sensor networks to assist in the initial deployment of nodes. Mobile sensors

  4. IDENTIFICATION OF CASO4 FORMED BY REACTION OF CAO AND SO2

    EPA Science Inventory

    The article discusses the XRD-determination of the identity of CaSO4, formed by the reaction between CaO and S02, and the support of that determination by density measurements with helium pycnometry. The anhydrous CaS04 compound formed has an orthorhombic crystal structure and an...

  5. METHOD FOR VARIATION OF GRAIN SIZE IN STUDIES OF GAS-SOLID REACTIONS INVOLVING CAO

    EPA Science Inventory

    The paper describes a method for varying grain size in studies of gas-solid reactions involving CaO. (Note: Introducing grain size as an independent experimental variable should contribute to improved understanding of reactions in porous solids.) Calcining 1 micrometer CaCO3 part...

  6. EFFECT OF SPECIFIC SURFACE AREA ON THE REACTIVITY OF CAO WITH SO2

    EPA Science Inventory

    The paper discusses results of measuring the rate of reaction of calcined limestone (CaCO3) with sulfur dioxide (SO2) and oxygen (O2) at conditions that eliminate all resistances not associated with the lime (CaO) grain surface. Reactivity increased with the square of the Brunaue...

  7. Provisioning on-line games: a traffic analysis of a busy counter-strike server

    Microsoft Academic Search

    Wu-chang Feng; Francis Chang; Wu-chi Feng; Jonathan Walpole

    2002-01-01

    This paper describes the results of a 500 million packet trace of a popular on-line, multi-player, game server. The results show that the traffic behavior of this heavily loaded game server is highly predictable and can be attributed to the fact that current game designs target the saturation of the narrowest, last-mile link. Specifically, in order to maximize the interactivity

  8. Protecting Privacy During On-line Trust Negotiation

    E-print Network

    Yu, Ting

    Protecting Privacy During On-line Trust Negotiation Kent E. Seamons1 , Marianne Winslett2 , Ting Yu, strangers build trust by exchanging #12;digital credentials, the on-line analogues of paper credentials demonstrate ownership of the credential. Digital credentials can be implemented using, for example, X.509

  9. On-line Encryption Schemes: New Security Notions and Constructions

    E-print Network

    Boldyreva, Alexandra

    On-line Encryption Schemes: New Security Notions and Constructions Alexandra Boldyreva Nut://www-cse.ucsd.edu/users/{aboldyre,ntaesomb} Abstract We investigate new strong security notions for on-line symmetric encryption schemes, which are the schemes whose encryption and decryption algorithms operate \\on-the- y" and in one pass, namely can compute

  10. Guida alla compilazione del Piano economico on line

    E-print Network

    De Cindio, Fiorella

    Guida alla compilazione del Piano economico on line #12;Attenzione Questa guida fornisce indicazioni pratiche per la compilazione del Piano economico on line. Per avere indicazioni più generali sulla formulazione del Piano economico si raccomanda di fare riferimento a: Guida alla presentazione (http

  11. On-Line Distance Learning: A Model for Developing Countries.

    ERIC Educational Resources Information Center

    Khan, Abdul W.

    2000-01-01

    Discusses issues related to open and distance-learning (ODL) in developing countries, using the virtual campus initiative of the Indira Gandhi National Open University (India) as an example and model of on-line program delivery and on-line, for-profit telelearning centers. Suggests strategies to enable open and distance-learning institutions to…

  12. Development of an On-Line Professional Group

    Microsoft Academic Search

    J. Homer-Trobaugh; G. Forsell; K. Ziemer

    1995-01-01

    Registered dietitians (RDs) using the on-line service America On-line (AL) created an electronic bulletin board in December 1994 to begin networking with other RDs. A search of the AOL membership directory identified other RDs using the service. Electronic mail messages were sent explaining the purpose of the group and how to find the bulletin board. Twelve RDs posted 23 messages

  13. Game theory, on-line prediction and boosting

    Microsoft Academic Search

    Yoav Freund; Robert E. Schapire

    1996-01-01

    We study the close connections between game the- ory, on-line prediction and boosting. After a brief review of game theory, we describe an algorithm for learning to play repeated games based on the on-line prediction methods of Littlestone and War- muth. The analysis of this algorithm yields a sim- ple proof of von Neumann's famous minmax theo- rem, as well

  14. On-Line Robot Motion Planning In Dynamic Environments

    Microsoft Academic Search

    Tsai-yen Li

    1995-01-01

    In a constantly changing and partially unpredictable environment, robot motion planningmust be on-line. The planner then receives a continuous #ow of informationabout occurring events and generates motoin plans. While planned motions are beingexecuted, new plans are generated in response to incoming events. This thesisdescribes an on-line planner for two cooperating arms whose task is to grab parts ofvarious types on

  15. On-line ash analysis: The next step

    Microsoft Academic Search

    Laurila

    1988-01-01

    In contrast to bulk analyzers, there is only one on-line coal slurry analyzer available commercially. A handful of slurry analyzers are under development. With the number of fine coal circuits on the rise in the US coal industry (either through the small number of new plants being constructed or circuit modifications to existing plants), the use of on-line ash analysis

  16. On-Line Administrative Information Systems: A Case Study.

    ERIC Educational Resources Information Center

    Sire, Paul W.

    A case study approach is used to document the on-line information system developed by the Office of Management Information and Computing at the University of Vermont. Stanford University's Project INFO On-Line Administration Information System, OASIS, was chosen as a model. The administrative system is one of two on campus, the other designed for…

  17. Are On-Line Data Bases in Your Library's Future?

    ERIC Educational Resources Information Center

    Deacon, Jim

    1983-01-01

    THE FOLLOWING IS THE FULL TEXT OF THIS DOCUMENT: Today there are over 900 on-line data banks available for public access. Most microcomputers can use them through the aid of a modem and communication program. Major public information utilities that offer access to these on-line data bases are growing and expanding. The Source, a data base utility…

  18. On the On-line Number of Snacks Problem

    Microsoft Academic Search

    Weimin Ma; Jane You; Yinfeng Xu; James Liu; Kanliang Wang

    2002-01-01

    In the number of snacks problem (NSP), which was originally proposed by our team, an on-line player is given the task of deciding how many shares of snacks his noshery should prepare each day. The on-line player must make his decision and then finish the preparation before the customers come to his noshery for the snacks; in other words, he

  19. Silicon Support Vector Machine with On-Line Learning

    Microsoft Academic Search

    Roman Genov; Shantanu Chakrabartty; Gert Cauwenberghs

    2003-01-01

    Training of support vector machines (SVMs) amounts to solving a quadratic program- ming problem over the training data. We present a simple on-line SVM training algo- rithm of complexity approximately linear in the number of training vectors, and linear in the number of support vectors. The algorithm implements an on-line variant of se- quential minimum optimization (SMO) that avoids the

  20. Evidence on the Effectiveness of On-Line Homework

    ERIC Educational Resources Information Center

    Dillard-Eggers, Jane; Wooten, Tommy; Childs, Brad; Coker, John

    2008-01-01

    The purpose of this research is to evaluate the impact and effectiveness of on-line homework in principles of accounting classes. We surveyed students to determine their degree of satisfaction with on-line homework and their perceptions about its effectiveness in enhancing their learning. We also gathered data to determine the extent of online…

  1. ON-LINE CURSIVE HANDWRITING RECOGNITION USING SPEECH RECOGNITION METHODS

    E-print Network

    Starner, Thad E.

    ON-LINE CURSIVE HANDWRITING RECOGNITION USING SPEECH RECOGNITION METHODS Thad Starnert , John system is applied to on-line cursive handwrit- ing recognition. The base system is unmodified except for using handwriting feature vectors instead of speech. Due to inherent properties of HMMs, segmentation

  2. On-line Predictive Load Shedding for Network Monitoring

    E-print Network

    Politècnica de Catalunya, Universitat

    On-line Predictive Load Shedding for Network Monitoring Pere Barlet-Ros1 , Diego Amores-L´opez1 with anomalous traffic, extreme traffic mixes or highly variable rates. We present an on-line predictive load-lived executions with several concurrent monitoring applica- tions. The system efficiently handles extreme load

  3. On-line Load Balancing Yossi Azar y

    E-print Network

    Azar, Yossi

    On-line Load Balancing Yossi Azar y Andrei Z. Brodery Anna R. Karliny Abstract The setup for our is not. The on-line load balancing problem is to assign each task to an appropriate server in such a way that the maximum load on the servers is minimized. In this paper we derive matching upper and lower bounds

  4. Remote Automatic Material On-Line Sensor

    SciTech Connect

    Magnuson, Erik

    2005-12-20

    Low cost NMR sensor for measuring moisture content of forest products. The Department of Energy (DOE) Industries of the Future (IOF) program seeks development and implementation of technologies that make industry more efficient--in particular, more energy-efficient. Quantum Magnetics, Inc. (QM), a wholly-owned subsidiary of GE Security, received an award under the program to investigate roles for low-cost Nuclear Magnetic Resonance (NMR) technology in furtherance of these goals. Most NMR systems are designed for high-resolution spectroscopy applications. These systems use intense magnetic fields produced by superconducting magnets that drive price and operating cost to levels beyond industry tolerance. At low magnetic fields, achievable at low cost, one loses the ability to obtain spectroscopic information. However, measuring the time constants associated with the NMR signal, called NMR relaxometry, gives indications of chemical and physical states of interest to process control and optimization. It was the purpose of this effort to investigate the technical and economic feasibility of using such low-field, low-cost NMR to monitor parameters enabling greater process efficiencies. The primary target industry identified in the Cooperative Development Agreement was the wood industry, where the moisture content of wood is a key process parameter from the time the cut tree enters a mill until the time it is delivered as pieces of lumber. Extracting the moisture is energy consuming, and improvements in drying efficiency stand to reduce costs and emissions substantially. QM designed and developed a new, low-cost NMR instrument suitable for inspecting lumber up to 3 inches by 12 inches in cross section, and other materials of similar size. Low cost is achieved via an inexpensive, permanent magnet and low-cost NMR spectrometer electronics. Laboratory testing demonstrated that the NMR system is capable of accurate ({+-} 0.5%) measurements of the moisture content of wood for moisture ranging from 2% to over 140% (referenced to the wood's dry weight). Accuracy exceeded that offered by existing instrumentation when the moisture content was in excess of the fiber saturation point ({approx}20%). Accuracy was independent of the wood form: solid wood, wood chips or sawdust. The prototype NMR system was designed and built for incorporation and use in a beta test site. Beta testing is under way at the pilot plant operated by the Pulp and Paper Research Institute of Canada (PAPRICAN) in Vancouver, B.C. Other industries were also investigated. For example, laboratory testing demonstrated that low-field NMR is capable of measuring the hydrogen content of calcium oxide (quicklime). Hydrogen content measurement can be done both rapidly (on the order of 1 second) and nondestructively. Measurement of moisture in quicklime affects energy consumption in the steel industry. Further advances in system electronics, ongoing under DOD support, will enable yet more substantial system cost reductions over the prototype system, opening up a wider range of utility.

  5. On-line maintenance methodology development and its applications

    SciTech Connect

    Kim, J.; Jae, M. [Dept. of Nuclear Engineering, Hanyang Univ., 17 Haengdang, Sungdong, Seoul (Korea, Republic of)

    2012-07-01

    With the increasing economic pressures being faced and the potential for shortening outage times under the conditions of deregulated electricity markets in the world, licensees are motivated to get an increasing amount of the on-line maintenance (OLM). The benefits of the OLM includes increased system and plant reliability, reduction of plant equipment and system material condition deficiencies that could adversely impact operations, and reduction of work scope during plant refueling outages. In Korea, allowance guidelines of risk assessment is specified in the safety regulation guidelines 16.7 and 16.8 of the Korea Inst. of Nuclear Safety (KINS), which is 'General guidelines of Risk-informed application for requesting permission of changes' and 'Requesting permission of changes of Risk-informed application for Technical Specification'. We select the emergency diesel generator (EDG) of the Ulchin unit 3 and 4 for risk assessment analysis by applying configuration changes. The EDG which has plant safety level IE belongs to on-site standby power (A, B train EDG) in electric distribution system. The EDG is important component because it should maintain standby status during plant is operating, therefore we select the EDG for target component of risk assessment analysis. The risk assessment is limited to CDF. The risk assessment is performed by using AIMS-PSA Release2. We evaluate CDF by applying the configuration changes with some assumptions. Evaluation of the full power operation and Low power/Shut down operation was performed. This study has been performed for introducing a methodology and performing risk assessment. (authors)

  6. Practical experience with on-line ion chromatography

    SciTech Connect

    Lynch, G.J.

    1991-12-31

    Bettis is heavily involved in on-line ion chromatography and has gained much experience with the systems. This paper serves to pass that experience along to any users, current or prospective, that are interested in the systems. On-line IC is extremely dynamic and the developments over the past few years have helped to produce systems that can provide technical and productivity improvements. The potential uses of the systems are only beginning to be tapped. It is the information provided herein maybe useful to any interested in on-line ion chromatography.

  7. Coding and on-line transmitting system for medical research

    Microsoft Academic Search

    V. Zagursky; S. Smirnovs

    1999-01-01

    A distributed data acquisition system is proposed. It provides parallel and simultaneous coding and on-line transmission of signals. This system has high accuracy of measurements and performance in sampling and transmission comparing with known analogs

  8. Coding and on-line transmitting system for medical researches

    Microsoft Academic Search

    V. Zagursky; S. Smirnovs

    2000-01-01

    A distributed data acquisition system is proposed. It provides parallel and simultaneous coding and on-line transmission of signals. This system has high accuracy of measurements and performance in sampling and transmission comparing with known analogs.

  9. On-line hydraulic state prediction for water distribution systems

    E-print Network

    Whittle, Andrew

    This paper describes and demonstrates a method for on?line hydraulic state prediction in urban water networks. The proposed method uses a Predictor?Corrector (PC) approach in which a statistical data?driven algorithm is ...

  10. Assessing the Usability of On-Line Instructional Materials.

    ERIC Educational Resources Information Center

    Mehlenbacher, Brad

    2002-01-01

    Explores user interface and instructional design of on-line materials. Examines such criteria as accessibility, aesthetic appeal, consistency and layout, customizability and maintainability, help and support documentation, intimacy and presence, and metaphors and maps. (EV)

  11. [Textual research on Costus root (Aucklandia lappa Decne) in the Sheng nong ben cao jing (Shennong's Classic of Materia Medica)].

    PubMed

    Li, Guangyan; Wang, Dequn; Fang, Shiying; Xu, Maohong

    2014-05-01

    Aucklandia lappa Decne was first recorded in the Sheng nong ben cao jing (Shennong's Classic of Materia Medica). Through the textual research of herbal literature, it was found that the costus root in the Sheng nong ben cao jing perhaps was not the plant of Aucklandia lappa Decne of Compositae, but the eaglewood or Lignum Aquilasria Resinatum based on the comprehensive judgment of shape, taste, nature, and function etc. In the Sheng nong ben cao jing, it only includes costus root without the title of eaglewood, and Tao Hongjing recorded both herbs together in his Ming yi bie lu (Supplementary Records of Celebrated Physicians), which became a foreshadow of misunderstanding of the later generations. Beginning from the Tang ben cao (Materia Medica of the Tang Dynasty), the costus root was considered as the plant of Auckiandia lappa Decne from the Compostae with its profound influence until now. PMID:25208833

  12. Characterization of CaO+ and BaO+ by Two-Photon Ionization Spectroscopy

    NASA Astrophysics Data System (ADS)

    Bartlett, Joshua; VanGundy, Robert A.; Heaven, Michael

    2014-06-01

    Reactions of laser-cooled Ca+ and Ba+ ions with O2 provide pathways to the formation of cold molecular cations (CaO+ and BaO+) that may be further manipulated using ion trapping techniques. Spectroscopic data for these ions are needed to facilitate the characterization of internal state population distributions using highly sensitive detection schemes such as resonantly enhanced multi-photon dissociation (REMPD). Ab initio electronic structure calculations predict that both ions have X1?+ ground states, accompanied by low-lying A2? states. We are currently using two-color photoionization techniques to observe the low-lying ro-vibronic states of CaO+ and BaO+. The neutral molecules are produced by laser ablation of the metals, combined with free-jet expansion driven by He/O2 (0.1-0.2%) mixtures. Photoionization efficiency curves and zero kinetic energy photoelectron spectra will be reported.

  13. Measuring the Effects of an On-Line Training Module for School Psychologists Working with Traumatized Children: A Pilot Study

    ERIC Educational Resources Information Center

    Dezen, Kristin

    2012-01-01

    The present study was designed to address the current lack of trauma training provided to school psychologists. Specifically, this study employed a randomized, controlled design to test the efficacy of an on-line training targeting school psychology graduate student trainees' awareness of the signs and symptoms of child abuse as well as their…

  14. Approach for Error Masking Elimination in on-line Multipliers

    Microsoft Academic Search

    H. Bederr; M. Nicolaidis; A. Guyot

    Several systematic design approaches are known to be representatives of the techniques well adapted for testing sequential circuits (partial and full scan, LSSD ...). However in some cases, like for the test of on-line operators, ad-hoc DFT (design for testability) schemes become more suitable. Indeed, on-line arithmetic are used for high precision numbers resulting on high length operators. Thus the

  15. Treatability of PCB-contaminated soils with quicklime (CaO)

    Microsoft Academic Search

    D. Mauro; B. B. Taylor

    1992-01-01

    The possibility that quicklime (calcium oxide, CaO) can destroy PCBs has received much attention over the past year. Observations at an EPA remediation site, where lime-containing kiln dusts were used for interim stabilization of PCB-containing wastes prompted the EPA to sponsor a small research project to investigate quicklime-PCB interactions. That study reported decreases in PCB content in synthetic, PCB-spiked soil

  16. Thermal diffusivity of sintered 12CaO×7Al2O3

    NASA Astrophysics Data System (ADS)

    Nikoli?, P. M.; Lukovi?, D. T.; Savi?, S. M.; Milovanovi?, A. M.; Uki?, S. R.; Nikoli?, M. V.; Stamenovi?, B.

    2008-01-01

    The thermal diffusivity and free carrier diffusion coefficient of 12CaO× 7 Al{2}O{3} (C12A7) sintered for different times in air or hydrogen followed by treatment with UV light were determined from photoacoustic phase and amplitude spectra obtained using the photoacoustic method with a transmission detection configuration. The influence of the sintering time on the values of the obtained parameters was analyzed and also the different sintering procedures.

  17. On-line octane control with NIR analyzers. [Near InfraRed

    SciTech Connect

    Zetter, M.S. (UOP Guided Wave, El Dorado Hills, CA (United States)); Politzer, B.A. (Strategic Marketing, Gatos, CA (United States))

    1993-03-01

    On-line octane monitoring at the blender offers substantial advantages in reformulating gasoline and minimizing octane giveaway'. Accurate, real-time measurement of octane number allows rapid adjustments to component feed streams, compensating for variability in the rest of the refining process. With tighter control of the blending operation, less off-spec product is produced, which is particularly important when blending directly into a pipeline. In blending to tankage, less reblending is required to achieve the desired octane specification, which increases both efficiency and equipment utilization. Once tighter octane control is achieved, the refiner can shift octane number targets closer to minimum specifications, thereby reducing octane giveaway. The paper describes on-line octane measurement; remote sensing spectrophotometer; in-line application; principles of operation; instrument calibration; technical performance; tangible economic savings; and future expansion.

  18. Porous carbon material containing CaO for acidic gas capture: preparation and properties.

    PubMed

    Przepiórski, Jacek; Czy?ewski, Adam; Pietrzak, Robert; Toyoda, Masahiro; Morawski, Antoni W

    2013-12-15

    A one-step process for the preparation of CaO-containing porous carbons is described. Mixtures of poly(ethylene terephthalate) with natural limestone were pyrolyzed and thus hybrid sorbents could be easily obtained. The polymeric material and the mineral served as a carbon precursor and CaO delivering agent, respectively. We discuss effects of the preparation conditions and the relative amounts of the raw materials used for the preparations on the porosity of the hybrid products. The micropore areas and volumes of the obtained products tended to decrease with increasing CaO contents. Increase in the preparation temperature entailed a decrease in the micropore volume, whereas the mesopore volume increased. The pore creation mechanism is proposed on the basis of thermogravimetric and temperature-programmed desorption measurements. The prepared CaO-containing porous carbons efficiently captured SO2 and CO2 from air. Washing out of CaO from the hybrid materials was confirmed as a suitable method to obtain highly porous carbon materials. PMID:23743266

  19. Going Beyond Classroom Learning: Acquiring Cultural Knowledge via On-Line Newspapers and Intercultural Exchanges via On-Line Chatrooms

    Microsoft Academic Search

    Lina Lee

    The Internet is increasingly considered as an instructional tool for foreign language learning both within and beyond classroom learning. This article reports a pilot study on the use of a combination of Internet technolo- gies—on-line newspapers and on-line chatrooms—to enhance the learn- ing of advanced Spanish students. The goal of the project was (a) to cre- ate opportunities for students

  20. Establishing standards for intranet on-line education.

    PubMed

    Peterson, Ronnie; Berns, Susan

    2005-01-01

    Following a clear set of on-line programming standards assists educators with consistency the training expectations from participants. Placing staff educational materials and health information online is an effective way to disseminate information and an efficient method of providing ongoing staff education. The presentation of on-line programming should be organized, comprehensive, and up-to-date. In addition, on-line programming should also be appealing, dynamic, and, above all practical. Today's clinical staff are pushed to the limits of time and resources. On-line training is one way to help staff meet their learning needs in today's reality. The inception of the UWMF on-line educational programs began in January 2002. Since that date employee participation has increased steadily. The time for Intranet on-line program development is part of the staff education department. For example, one area of programming is the mandatory educational credits needed for the organizations 100 certified medical assistants (CMAs). Figure 1 shows the nearly 3.5 years (January 2002 through May 2005) of participation. The 912 sessions made available 1,870 CEs for the CMAs. If the organization's CMAs were to pay for the continuing education credits (CEs) outside of the clinic setting, it could cost on average of dollar 10.00 per CE, or dollar 18,700 during the same 3-year period. Another aspect of economics is the cost in time away from work. On-line education allows employees to participate when time is available, versus having to leave work when traditional educational inservices are being held. This flexibility in participation can lead to better staff coverage. PMID:16315659

  1. An on-line replanning method for head and neck adaptive radiotherapy

    SciTech Connect

    Ahunbay, Ergun E.; Peng, Cheng; Godley, Andrew; Schultz, Christopher; Li, X. Allen [Department of Radiation Oncology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, Wisconsin 53226 (United States)

    2009-10-15

    Daily setup for head and neck (HN) radiotherapy (RT) can vary randomly due to neck rotation and anatomy change. These differences cannot be totally corrected by the current practice of image guided RT with translational repositioning. The authors present a novel rapid correction scheme that can be used on-line to correct both interfractional setup variation and anatomy change for HN RT. The scheme consists of two major steps: (1) Segment aperture morphing (SAM) and (2) segment weight optimization (SWO). SAM is accomplished by applying the spatial relationship between the apertures and the contours of the planning target and organs at risk (OARs) to the new target and OAR contours. The new target contours are transferred from planning target contours to the CT of the day by means of deformable registration (MIMVISTA). The dose distribution for each new aperture was generated using a planning system with a fast dose engine and hardware and was input into a newly developed SWO package using fast sequential quadratic programming. The entire scheme was tested based on the daily CT images acquired for representative HN IMRT cases treated with a linac and CT-on-Rails combo. It was found that the target coverage and/or OAR sparing was degraded based on the CT of the day with the current standard repositioning from rigid registration. This degradation can be corrected by the SAM/SWO scheme. The target coverage and OAR sparing for the SAM/SWO plans were found to be equivalent to the original plan. The SAM/SWO process took 5-8 min for the head and neck cases studied. The proposed aperture morphing with weight optimization is an effective on-line approach for correcting interfractional patient setup and anatomic changes for head and neck cancer radiotherapy.

  2. Recent advances in nuclear physics through on-line isotope separation

    NASA Astrophysics Data System (ADS)

    Jenkins, David Gareth

    2014-12-01

    Nuclear physics is advancing rapidly at the precision frontier, where measurements of nuclear observables are challenging state-of-the-art nuclear models. A major contribution is associated with the increasing availability of accelerated beams of radioactive ions produced using the isotope separation on-line technique. These advances have come hand in hand with significant progress in the development of high-efficiency detector systems and improved target technologies which are invaluable in exploiting these beams to their full advantage. This article reviews some of the recent highlights in the field of nuclear structure profiting from these technological advances.

  3. Making the most of on-line recruiting.

    PubMed

    Cappelli, P

    2001-03-01

    Ninety percent of large U.S. companies are already recruiting via the Internet. By simply logging on to the Web, company recruiters can locate vast numbers of qualified candidates for jobs at every level, screen them in minutes, and contact the most promising ones immediately. The payoffs can be enormous: it costs substantially less to hire someone on-line, and the time saved is equally great. In this article, Peter Cappelli examines some of the emerging service providers and technologies--matchmakers, job boards, hiring management systems software, and applicant-screening mechanisms that test skills and record interests. He also looks at some of the strategies companies are adopting as they enter on-line labor markets. Recruiting needs to be refashioned to resemble marketing, he stresses. Accordingly, smart companies are designing Web pages, and even product ads, with potential recruits in mind. They're giving line managers authority to hire so that candidates in cyberspace aren't lost. They're building internal on-line job networks to retain talent. Integrating recruiting efforts with overall marketing campaigns, especially through coordination and identification with the company's brand, is the most important thing companies can do to ensure success in on-line hiring. Along the way, Cappelli sounds two cautionary notes. First, a human touch, not electronic contact, is vital in the last steps of a successful hiring process. Second, companies must make sure that on-line testing and hiring criteria do not discriminate against women, disabled people, workers over 40, or members of minority groups. When competition for talent is fierce, companies that master the art and science of on-line recruiting will be the ones that attract and keep the best people. PMID:11246921

  4. Optimization of polyhydroxyalkanoates fermentations with on-line capacitance measurement.

    PubMed

    Li, Lan; Wang, Ze-Jian; Chen, Xue-Jun; Chu, Ju; Zhuang, Ying-Ping; Zhang, Si-Liang

    2014-03-01

    The aim of this work was to provide an effective methodology for optimization of the polyhydroxyalkanoates (PHAs) fermentation with Ralstonia eutropha by the on-line capacitance measurement. The present study found the capacitance values could reflect variations of microbial morphology and viability. Furthermore, oxygen uptake rate, specific oxygen uptake rate and specific growth rate were measured in real-time and compared with the capacitance value. In addition, a fed-batch control strategy based on the on-line capacitance measurement was proposed to improve the PHAs production by 22%. PMID:24508658

  5. A program evaluation of on-line file organization methods

    E-print Network

    Griffith, Byron James

    1973-01-01

    Ma)or Sub)ect: Computing Science A PROGRAM EVALUATION OF ON-LINE FILE ORGANIZATION METHODS A Thesis by BYRON JAMES GRIFFITH Approved as to style and content by: uP ~Chairman of Committee Head o epartment Member Member Member Member Member..., by considering a track as a tree node, the branching factor is the total possible number of different tracks which can be branched to from any one node. Prior to this calculation, the designer should decide if the tree will be sub)ected to on-line updates...

  6. The VME based Obelix TOF on-line system

    SciTech Connect

    Bonazzola, G.C.; Bressani, T.; Calvo, D.; Costa, S.; d'Isep, F.; Feliciello, A.; Gianotti, P.; Marcello, S. (Dipartimento di Fisica Sperimentale dell' Universita', 10125 Torino (IT)); Agnello, M.; Iazzi, F.; Minetti, B. (Dipartimento di Fiscia del Politecnico, 10129 Torino (IT)); Macciotta, M.P.; Masoni, A.; Puddu, G.; Serci, S. (Dipartimento di Fisica dell' Universita', 09100 Cagliari (IT)); Morando, M. (Dipartimento de Fisica dell' Universita', 35020 Padova (IT)); Maron, G.; Vedovato, G. (INFN Laboratori Nazionali di Legnaro, 35020 Padova (IT)); Filippini, V. (Dipartimento di Fisica Nucleare e Teorica dell' Universita', 27100 Pavia (IT))

    1990-04-01

    The Obelix spectrometer is dedicated to meson spectroscopy and to antinucleon-nucleon and antinucleon-nucleus interaction studies. The time-of-flight (TOF) apparatus consists of two concentric arrays (30 + 90) of plastic scintillators. The Obelix on-line architecture is devised so as to enable a centralized data acquisition as well as independent data taking for each detector. The authors describe the TOF on-line system. Both the software and the hardware aspects are discussed. This system is being employed in test runs on the TOF apparatus and, integrated with other components of the whole detector, in the beam tests.

  7. On-line re-optimization of prostate IMRT plans for adaptive radiation therapy

    NASA Astrophysics Data System (ADS)

    Wu, Q. Jackie; Thongphiew, Danthai; Wang, Zhiheng; Mathayomchan, Boonyanit; Chankong, Vira; Yoo, Sua; Lee, W. Robert; Yin, Fang-Fang

    2008-02-01

    For intermediate and high risk prostate cancer, both the prostate gland and seminal vesicles are included in the clinical target volume. Internal motion patterns of these two organs vary, presenting a challenge for adaptive treatment. Adaptive techniques such as isocenter repositioning and soft tissue alignment are effective when tumor volumes only exhibit translational shift, while direct re-optimization of the intensity-modulated radiation therapy (IMRT) plan maybe more desirable when extreme deformation or differential positioning changes of the organs occur. Currently, direct re-optimization of the IMRT plan using beamlet (or fluence map) has not been reported. In this study, we report a novel on-line re-optimization technique that can accomplish plan adjustment on-line. Deformable image registration is used to provide position variation information on each voxel along the three dimensions. The original planned dose distribution is used as the 'goal' dose distribution for adaptation and to ensure planning quality. Fluence maps are re-optimized via linear programming, and a plan solution can be achieved within 2 min. The feasibility of this technique is demonstrated with a clinical case with large deformation. Such on-line ART process can be highly valuable with hypo-fractionated prostate IMRT treatment. Abstract and preliminary data presented at 49th AAPM Annual Meeting, Minneapolis, MN, USA, July 2007.

  8. On-line re-optimization of prostate IMRT plans for adaptive radiation therapy.

    PubMed

    Wu, Q Jackie; Thongphiew, Danthai; Wang, Zhiheng; Mathayomchan, Boonyanit; Chankong, Vira; Yoo, Sua; Lee, W Robert; Yin, Fang-Fang

    2008-02-01

    For intermediate and high risk prostate cancer, both the prostate gland and seminal vesicles are included in the clinical target volume. Internal motion patterns of these two organs vary, presenting a challenge for adaptive treatment. Adaptive techniques such as isocenter repositioning and soft tissue alignment are effective when tumor volumes only exhibit translational shift, while direct re-optimization of the intensity-modulated radiation therapy (IMRT) plan maybe more desirable when extreme deformation or differential positioning changes of the organs occur. Currently, direct re-optimization of the IMRT plan using beamlet (or fluence map) has not been reported. In this study, we report a novel on-line re-optimization technique that can accomplish plan adjustment on-line. Deformable image registration is used to provide position variation information on each voxel along the three dimensions. The original planned dose distribution is used as the 'goal' dose distribution for adaptation and to ensure planning quality. Fluence maps are re-optimized via linear programming, and a plan solution can be achieved within 2 min. The feasibility of this technique is demonstrated with a clinical case with large deformation. Such on-line ART process can be highly valuable with hypo-fractionated prostate IMRT treatment. PMID:18199909

  9. Parallel dynamic programming for on-line flight path optimization

    NASA Technical Reports Server (NTRS)

    Slater, G. L.; Hu, K.

    1989-01-01

    Parallel systolic algorithms for dynamic programming(DP) and their respective hardware implementations are presented for a problem in on-line trajectory optimization. The method is applied to a model for helicopter flight path optimization through a complex constraint region. This problem has application to an air traffic control problem and also to a terrain following/threat avoidance problem.

  10. The Nearness of You: Students & Teachers Writing On-Line.

    ERIC Educational Resources Information Center

    Edgar, Christopher, Ed.; Wood, Susan Nelson, Ed.

    This book is a guide to using new computer technologies in innovative ways to teach writing, particularly imaginative writing. The book shows how on-line technology can be a positive tool in the classroom, if the focus is on the users of the technology and the technology is integrated into the curriculum. The book is divided into five sections and…

  11. Automatically Deriving Structured Knowledge Bases From On-Line Dictionaries

    Microsoft Academic Search

    William Dolan; Stephen D. Richardson; Lucy Vanderwende

    1993-01-01

    We describe an automated strategy which exploits on-line dictionaries to construct a richly- structured lexical knowledge base. In particular, we show how the Longman Dictionary of Contemporary English (LDOCE) can be used to build a directed graph which captures semantic associations between words. The result is a huge and highly interconnected network of words linked by arcs labeled with semantic

  12. ON-LINE TOXICITY MONITORS AND WATERSHED EARLY WARNING SYSTEMS

    EPA Science Inventory

    A Water Quality Early Warning System using On-line Toxicity Monitors (OTMs) has been deployed in the East Fork of the Little Miami River, Clermont County, OH. Living organisms have long been used to determine the toxicity of environmental samples. With advancements in electronic ...

  13. Bucknell On-Line Circulation System; A Library Staff View.

    ERIC Educational Resources Information Center

    Rivoire, Helena

    The Bucknell On-Line Circulation System (BLOCS) was designed to meet the requirements of a circulation system of the Ellen Clarke Bertrand Library of Bucknell University. The requirements for an automated system were, in sum: (1) a system whose operations were not only reliable but simple enough for student assistants (many of whom work only 10…

  14. The On-Line Audit Revisited: Yale University.

    ERIC Educational Resources Information Center

    Weldon, Albert R., Jr.; And Others

    1984-01-01

    Yale University's on-line examination of accounting and administrative systems is discussed. Program goals are to review financial management systems at the university to identify weaknesses in internal controls, and to fulfill all audit requirements of federal grants and contracts. After outlining the quarterly audit cycle, advantages of the…

  15. Relating Reputation and Money in On-line Markets

    Microsoft Academic Search

    Ashwin Swaminathan; Renan G. Cattelan; Cherian V. Mathew; Ydo Wexler; Darko Kirovski

    2009-01-01

    Reputation in on-line economic systems is typically quantified using counters that specify positive and negative feedback from past transactions and\\/or some form of transaction network analysis that aims to quantify the likelihood that a network user will commit a fraudulent transaction. These approaches can be deceiving to honest users from numerous perspectives. We take a radically different approach with a

  16. Relating Reputation and Money in On-line Markets

    Microsoft Academic Search

    Ashwin Swaminathan; Renan Cattelan; Ydo Wexler; Cherian Varkey Mathew; Darko Kirovski

    2008-01-01

    Reputation in on-line economic systems is typically quantified using counters that specify positive and negative feedback from past transactions and\\/or some form of transaction network analysis that aims to quantify the likelihood that a network user will commit a fraudulent transaction. These approaches can be deceiving to honest users from numerous perspectives. We take a radically different approach with a

  17. On-Line Marketing-Communication In Hungary

    Microsoft Academic Search

    Krisztina Taralik

    2011-01-01

    From the total domestic advertisement cake the internet has a steadily growing slice. The reasons of turning towards the on-line communication we can look for in the change of the consumer habits and the development of the technical side. Due to the media noise consumers become indifferent, the development of digital technology breaking up the media consumption habits, these trends

  18. The combined model of influencing on-line consumer behavior

    Microsoft Academic Search

    Wen-Bao Lin; Ming-Kuen Wang; Kevin P. Hwang

    2010-01-01

    Combining the views from the Decomposed Theory of Planned Behavior and Technology Acceptance Model, this study proposes an integrated opinion to construct on-line consuming behavior patterns for travel. The nonlinear fuzzy network model were adopted to test and verify the sample data. The method of convenience sampling was employed and the questionnaires were distributed through e-mail sending, or were brought

  19. On-Line Machine Covering Yossi Azar1

    E-print Network

    Azar, Yossi

    On-Line Machine Covering Yossi Azar1 ,Leah Epstein2 1 Dept. of Computer Science, Tel of scheduling a sequence of jobs to m parallel machines as to maximize the minimum load over the machines. This situation corresponds to a case that a system which consists of the m machines is alive (i.e. productive

  20. Statistical Mechanics of On-line learning Michael Biehl1

    E-print Network

    Biehl, Michael

    Statistical Mechanics of On-line learning Michael Biehl1 , Nestor Caticha2 , and Peter Riegler3 1 Introduction The perception that Statistical Mechanics is an inference theory has opened the possibility of part of the Statistical Mechanics community during the last decades in machine learning

  1. Arts & Lecture Series Free on-line ticketing

    E-print Network

    Quigg, Chris

    Fermilab Arts & Lecture Series 2013­14 Free on-line ticketing now available! Check our web page Stars of Dance Chicago Jingle Babes: Decking the Halls with Songs and Folly--The Four Bitchin' Babes. James Kakalios The Physics of Superheroes Physics Slam 2013 Dr. Pete Beckman Super Smart Supercomputers

  2. A New On-Line Resource for Psycholinguistic Studies

    ERIC Educational Resources Information Center

    Szekely, Anna; Jacobsen, Thomas; D'Amico, Simona; Devescovi, Antonella; Andonoa, Elena; Herron, Daniel; Lu, Ching Ching; Pechmann, Thomas; Pleh, Csaba; Wicha, Nicole; Federmeier, Kara; Gerdjikova, Irina; Gutierrez, Gabriel; Hung, Daisy, Hsu, Jeanne; Iyer, Gowri; Kohnert, Kathryn; Mehotcheva, Teodora; Orozco-Figueroa, Araceli; Tzeng, Angela; Tzeng, Ovid; Arevalo, Analia; Vargha, Andras; Butler, Andrew C.; Buffington, Robert; Bates, Elizabeth

    2004-01-01

    Picture naming is a widely used technique in psycholinguistic studies. Here, we describe new on-line resources that our project has compiled and made available to researchers on the world wide web at http://crl.ucsd.edu/~aszekely/ipnp/. The website provides access to a wide range of picture stimuli and related norms in seven languages. Picture…

  3. Assessment of an On-Line Educational Administration Course

    ERIC Educational Resources Information Center

    Kim, Lori

    2004-01-01

    An on-line education administration course was evaluated using Seven Lessons Learned by Graham, Cagiltay, Lim, Craner, and Duffy (2001 ) as the framework. The framework was found to be useful in revealing areas of strengths and weaknesses in offering virtual education administration courses. The evaluation provided information that clear…

  4. Next Generation On-Line Dynamic Security Assessment

    E-print Network

    conducting research on challenges facing the electric power industry and educating the next generation University) To account for the challenges associated with rapid expansion of modern electric power gridNext Generation On-Line Dynamic Security Assessment Parts III and IV Final Project Report Power

  5. The On-Line Processing of Written Irony

    ERIC Educational Resources Information Center

    Filik, Ruth; Moxey, Linda M.

    2010-01-01

    We report an eye-tracking study in which we investigate the on-line processing of written irony. Specifically, participants' eye movements were recorded while they read sentences which were either intended ironically, or non-ironically, and subsequent text which contained pronominal reference to the ironic (or non-ironic) phrase. Results showed…

  6. On-Line Schemes For Computing Rotation Angles For SVDS

    NASA Astrophysics Data System (ADS)

    Ercegovac, Milos D.; Lang, Tomas

    1988-01-01

    Two floating-point radix-2 schemes using on-line arithmetic for implementing the direct two-angle method for SVDs are presented. The first scheme is an on-line variant of the cosine/sine approach and is the fastest of the schemes considered: it performs the 2x2 SVD step in about 2n clock cycles. However, it requires a relatively large number of modules; this number is reduced when some modules are reused, resulting in a time of 3n clock cycles. The number of modules of this on-line version is still larger than that of the conventional one, but this is compensated by the smaller number of bit-slices per module and by the digit-serial communication among modules. The corresponding speed-up ratios are of 5 and 3 with respect to a conventional arithmetic implementation. The second scheme uses an on-line CORDIC approach and performs the 2x2 SVD in about 7n clock cycles and is advantageous because it is more time-area efficient. It results in a speed-up of about 2.5 with respect to the conventional CORDIC implementation.

  7. EPA'S ON-LINE CALCULATORS AND TRAINING COURSE

    EPA Science Inventory

    EPA has developed a suite of on-line calculators called "OnSite" for assessing transport of environmental contaminants int the subsurface. The calculators are available on the Internet at http://www.epa.gov/athens/onsite, and are divided into four categories: Parameter Estimate...

  8. Thermodynamic experiments on gases with a computer on-line

    Microsoft Academic Search

    G. DeBernardis; M. DePaz; M. Pilo; G. Sonnino

    1994-01-01

    Experiments on the adiabatic expansion of air are presented. Historical problems in the measurement of specific heats of gases are overcome using a fast acquisition on-line technique for gas thermometry. Pressure oscillations are seen to arise from non-steady-state heat inputs, and temperature corrections are evaluated. Education applications to the teaching of thermodynamics are discussed.

  9. Implementation, Analysis, and Assessment of On-Line Teaching Evaluations

    NASA Astrophysics Data System (ADS)

    Artz, Jerry L.

    2005-04-01

    This two-year project involved the introduction of a new, on-line teaching evaluation that enables students to anonymously assess their teachers and courses via computer. A pilot program, during fall 2003, involved 14 faculty volunteers. Student participation was voluntary but was strongly encouraged via both student congress and the student newspaper. Resulting in moderate to strong success, the pilot program was then extended to include the entire College of Liberal Arts of Hamline University during the spring and fall of 2004. The on-line teaching-evaluation program has since been introduced into several other colleges of the University. The evaluation instrument, student compliance, analysis of data, and assessment will be discussed. Comparisons are made (1) by grade received, (2) by class standing, (3) by ethnicity, and (4) of science versus non-science courses. In addition to common questions answered by all students, the on-line form allows instructors to add course-specific questions. Additional disciplinary-breadth assessment questions were added for the fall 2004 evaluation. Noteworthy problems that resulted from the introduction of on-line teaching evaluations will be discussed along with successes.

  10. The Transformation of Mathematics in On-Line Courses

    ERIC Educational Resources Information Center

    Borba, Marcelo C.

    2005-01-01

    This paper presents some research findings regarding the changes in the mathematics produced by mathematics teachers in on-line distance courses. Predicated on the belief that knowledge is generated by collectives of humans-with-media, and that different technologies modify the nature of the knowledge generated, we have sought to understand how…

  11. Switched reluctance motor modeling with on-line parameter identification

    Microsoft Academic Search

    Sayeed Mir; Iqbal Husain; Malik E. Elbuluk

    1998-01-01

    A nonlinear model with on-line parameter estimation using recursive identification for switched reluctance motors (SRMs) is presented. The model is robust toward parameter variations in the motor or any system disturbances. The parameters of the model are adjusted to account for errors in rotor position, which allows the use of crude inexpensive position sensors. The proposed modeling approach allows self-tuning

  12. Space and Movable Equipment On-line Inventory

    E-print Network

    Hayden, Nancy J.

    Space and Movable Equipment On-line Inventory FY14 (July 2013 - June 2014) CAS ­ Cost Accounting and Michael Richards #12;Learning Objectives · Gain understanding of the Importance of Space & Equipment Inventory. · Understand the entire Inventory Process. · How to classify functional space. · How to inventory

  13. Gender In-Difference: Rethinking Ideologies On-Line.

    ERIC Educational Resources Information Center

    Grubbs, Katherine

    On-line writing can disrupt conventions; it can challenge the way writers write in the classroom; however, after logging off, the writer re-enters the academy and its more traditional ways of inscribing student subjectivities. The question is asked if educators, when arguing for the freedom of electronic classrooms, are taking into consideration…

  14. Section BB Hatch Coating; Framing Plan on Line C Lodging ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Section B-B Hatch Coating; Framing Plan on Line C Lodging Knees at Hatch; Elevation A-A Hull Framing; Section at Hatch Frame 36, Starboard Looking Aft; Midship Section Frame 37, Port Looking Aft - Steam Schooner WAPAMA, Kaiser Shipyard No. 3 (Shoal Point), Richmond, Contra Costa County, CA

  15. April 13, 2012 Insect Collection On-Line Database "Infomercial"

    E-print Network

    Franz, Nico M.

    functions. We hope to engage ASU faculty and students who conduct field-based research on invertebrate 5). 1. On-Line Access The URL for the database portal is http://hasbrouck.asu.edu/symbiota/portal/index.php. The database is fully server-based (as opposed to desktop-based), and both data entry and retrieval require

  16. On-line corrosion monitoring for process plant control

    Microsoft Academic Search

    Bovankovich

    1994-01-01

    On-line corrosion monitoring (OLCM) is finding increasing use as an important monitor and control in the chemical and other process industries, from the inception of a new chemical process through operation of the commercial plant. The important OLCM techniques are reviewed. Examples of using OLCM for process control are given. The techniques used in OLCM include the following: electrical resistance

  17. On-Line Critiques in Collaborative Design Studio

    ERIC Educational Resources Information Center

    Sagun, Aysu; Demirkan, Halime

    2009-01-01

    In this study, the Design Collaboration Model (DCM) was developed to provide a medium for the on-line collaboration of the design courses. The model was based on the situated and reflective practice characteristics of the design process. The segmentation method was used to analyse the design process observed both in the design diaries and the…

  18. Advanced Special Protection System Modeling for On-Line Applications

    Microsoft Academic Search

    Lei Wang

    2011-01-01

    Dynamic Security Assessment (DSA) is an important way for ensuring the secure and reliable operation of power systems. The current trend is to perform DSA on line using near real-time data. One of the modeling considerations for DSA is special protection systems (SPS). This paper describes a framework that is designed to model SPS for DSA, particularly with respect to

  19. On-line mass storage system functional design document

    NASA Technical Reports Server (NTRS)

    Earnest, D.

    1975-01-01

    A functional system definition for an on-line high density magnetic tape data storage system is provided. This system can be implemented in a multi-purpose, multi-host environment, and satisfy the requirements of economical data storage in the range of 2 to 50 billion bytes.

  20. On-line Learning and the Metrical Task System Problem

    Microsoft Academic Search

    Avrim Blum; Carl Burch

    2000-01-01

    The problem of combining expert advice, studied extensively in the Computational Learning Theory literature, and the Metrical Task System (MTS) problem, studied extensively in the area of On-line Algorithms, contain a number of interesting similarities. In this paper we explore the relationship between these problems and show how algorithms designed for each can be used to achieve good bounds and

  1. On-Line Learning and the Implications for School Design

    ERIC Educational Resources Information Center

    Stack, Greg

    2011-01-01

    "Disrupting Class," published in 2008, is the story of how disruptive innovation, innovation that changes the business model organizations, will fundamentally change the American school system. The book's most startling prediction is that half of all high school classes will be on-line by 2019. In considering these predictions, the author began to…

  2. Interaction of CO with CaO surfaces: A TPD and FTIR study

    NASA Astrophysics Data System (ADS)

    Yanagisawa, Yasunori; Kashima, Shin-ichi

    2000-05-01

    By using temperature-programmed desorption (TPD) gas analysis, thermal desorptions of C 16O and C 18O were observed at peak temperatures of 460 and 430 K, respectively, after C 18O exposure at room temperature on CaO powders. By using FTIR measurements, C 16O adsorption produced main IR bands at 1606 and 1316 cm -1 (assigned to carbonate-type species), which disappeared after heating up to 500 K under condition of high vacuum. Oxygen exchange between C 18O and Ca 16O may occur through a CO 3-type intermediate on the surfaces, involving a lattice oxygen to produce the C 16O TD peak.

  3. Microporous crystal 12CaO x 7Al(2)O(3) encaging abundant O(-) radicals.

    PubMed

    Hayashi, Katsuro; Hirano, Masahiro; Matsuishi, Satoru; Hosono, Hideo

    2002-02-01

    Extremely high concentrations (>1020 cm-3) of active oxygenic radicals, O- and O2-, have been created in the zeolitic crystal, 12CaO.7Al2O3 (C12A7), which can accommodate anions in its cavities. An increase in oxygen pressure and a decrease in water vapor pressure at high temperature enhance the formation of the radicals. The oxidation of Pt is observed on the surface of the material as a result of reaction with the active oxygens. PMID:11817934

  4. 21 CFR 870.4330 - Cardiopulmonary bypass on-line blood gas monitor.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...false Cardiopulmonary bypass on-line blood gas monitor. 870.4330 Section...4330 Cardiopulmonary bypass on-line blood gas monitor. (a) Identification. A cardiopulmonary bypass on-line blood gas monitor is a device used in...

  5. 21 CFR 870.4330 - Cardiopulmonary bypass on-line blood gas monitor.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...false Cardiopulmonary bypass on-line blood gas monitor. 870.4330 Section...4330 Cardiopulmonary bypass on-line blood gas monitor. (a) Identification. A cardiopulmonary bypass on-line blood gas monitor is a device used in...

  6. 21 CFR 870.4330 - Cardiopulmonary bypass on-line blood gas monitor.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...false Cardiopulmonary bypass on-line blood gas monitor. 870.4330 Section...4330 Cardiopulmonary bypass on-line blood gas monitor. (a) Identification. A cardiopulmonary bypass on-line blood gas monitor is a device used in...

  7. 21 CFR 870.4330 - Cardiopulmonary bypass on-line blood gas monitor.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...false Cardiopulmonary bypass on-line blood gas monitor. 870.4330 Section...4330 Cardiopulmonary bypass on-line blood gas monitor. (a) Identification. A cardiopulmonary bypass on-line blood gas monitor is a device used in...

  8. 21 CFR 870.4330 - Cardiopulmonary bypass on-line blood gas monitor.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...false Cardiopulmonary bypass on-line blood gas monitor. 870.4330 Section...4330 Cardiopulmonary bypass on-line blood gas monitor. (a) Identification. A cardiopulmonary bypass on-line blood gas monitor is a device used in...

  9. Half-Antibody Functionalized Lipid-Polymer Hybrid Nanoparticles for Targeted Drug Delivery to

    E-print Network

    Zhang, Liangfang

    to Carcinoembryonic Antigen Presenting Pancreatic Cancer Cells Che-Ming Jack Hu,, Sharmeela Kaushal, Hop S. Tran Cao chemotherapy regimens against pancreatic cancer are met with little success as poor tumor vascularization, physicochemical properties, and targeting ability against pancreatic cancer cells. Under the same drug loading

  10. On-line Data Bases I. Use of Commercially Vended On-line Data Bases by Academic Libraries.

    ERIC Educational Resources Information Center

    Hitchingham, Eileen E.

    Part 1 of this study is an exploratory look at the use of on-line services in academic libraries. For this study Lockheed and System Development Corporation (SDC) were contacted and each listed a number of libraries which used their services. Academic libraries using MEDLINE were contacted, under the assumption that they also used other systems. A…

  11. A REVIEW OF SALIENT DIMENSIONS OF ON-LINE MARKET RESEARCH: IS ON-LINE RESEARCH BETTER?

    Microsoft Academic Search

    V. Aslihan Nasir

    Information technology, particularly the Internet, provides alternative ways of conducting marketing research. In this paper, the role of the Internet in different kinds of research and the dimensions of research design and methodology, including sampling, measurement and data analysis, are discussed. The newly emerging literature on the benefits and limitations of on-line marketing research is presented. It is concluded that

  12. Nb-doped CaO: an efficient electron donor system

    NASA Astrophysics Data System (ADS)

    Prada, Stefano; Giordano, Livia; Pacchioni, Gianfranco

    2014-08-01

    Transition metal atoms incorporated into insulating materials (oxides in particular) can deeply modify their adsorption properties. In particular, charge transfer to adsorbed species can be induced by the presence of substitutional dopants, which introduce new electronic states in the band gap of the host crystal. Here we show, by means of density functional theory calculations, that Nb represents an excellent dopant to turn the rather inactive CaO(100) surface into an electron-rich support. The charge transfer ability of the doped material is shown by comparing the adsorption properties of the electronegative Au atoms on pure and Nb-doped CaO. While in the first case the CaO-Au bonding is relatively weak and the Au atom is essentially neutral, in the Nb-doped system a much stronger adhesion is found due to a net charge transfer from the Nb dopant and to the formation of a gold anion. This mechanism occurs also for Nb in high oxidation states. Nb is thus an excellent modifier of the calcium oxide properties.

  13. Impacts of the 2010 Amazon drought on forest structure and function using CAO AToMS

    NASA Astrophysics Data System (ADS)

    Asner, G. P.; Martin, R. E.; Knapp, D. E.; Kennedy-Bowdoin, T.; Kellner, J.

    2012-12-01

    The 2010 Amazon mega-drought is thought to have had a widespread impact on forest condition, including tree mortality. However, no large-scale, high-resolution information exists on changes in forest structure, function, turnover or other processes in response to the drought. With the possibility of increasing drought frequency in the Amazon basin, it is now critical that we develop repeat, large-area studies to assess impacts and recovery. Using the Carnegie Airborne Observatory Airborne Taxonomic Mapping System (AToMS), we assessed the impacts of the 2010 drought by repeat flying of approximately 500,000 hectares of lowland humid tropical forest in the Peru Amazon. The CAO AToMS Visible-to-Near-Infrared (VNIR) and Visible-to-Shortwave-Infrared (VSWIR) imaging spectrometers recorded changes in forest canopy spectral, chemical and physiological state from 2009 to 2011. Areas of greatest functional change were observed near the Peru-Brazil border in areas under heavy forest use for selective logging. The CAO AToMS waveform Light Detection and Ranging (LiDAR) instruments measured highest rates of treefall and canopy gap formation in areas subjected to combined drought and logging, and on low fertility soils. The results provide the first spatially-explicit, large-scale and ecologically detailed information on the response of Amazonian forests to drought.

  14. Astronomy On-Line Programme Enters "hot Week"

    NASA Astrophysics Data System (ADS)

    1996-11-01

    World's Biggest Astronomy WWW-Event Attracts Thousands of Students The Astronomy On-line Programme (See ESO Press Release 09/96 of 18 June 1996) began officially on 1 October and is now about to enter its most intense phase, known as the Hot Week . On 18 - 22 November, an estimated 4000 astronomy-interested, mostly young people in Europe and on four other continents will get together during five days in what - not unexpected - has become the world's biggest astronomy event ever organised on the World Wide Web. This carefully structured Programme is carried out in collaboration between the European Association for Astronomy Education (EAAE), the European Southern Observatory and the European Commission, under the auspices of the Fourth European Week for Scientific and Technological Culture. The Programme has already had a most visible impact on the school education of natural sciences in various countries; for instance, the Internet-connection of schools has been advanced in some, in order to allow groups to participate. There have been numerous contacts among the groups across the borders and there are clear signs that many Astronomy On-line participants have progressed to use the impressive possibilities of the Web in an efficient and structured way. There has been a lively media interest in Astronomy On-line all over Europe and it is expected to increase during the next week. The current status of Astronomy On-line It is obvious that the pilot function of the Astronomy On-line Programme in the use of the Web has been very effective and that the associated dissemination of astronomical knowledge has been successful. At this time, more than 650 groups have registered with Astronomy On-line. Most come from 31 different European countries and a few dozen groups are located in North and South America as well as in Asia and Australia. Together they have experienced the steady build-up of Astronomy On-line over the past weeks, by means of numerous contributions from a large number of teachers, amateur astronomers and others interested in this field of science. The Astronomy On-line concept is that of a well-structured marketplace with a number of different shops which cater to the participants with a great variety of interesting and educational activities. These range from the availability of useful links to educational and scientific Web sites all around the world, collaborative projects where many participants in different countries work together to achieve an astronomical result and, not the least, the possibility to submit observing programmes to a dozen telescopes at 10 major observatories, including La Silla in Chile. In the early phases of Astronomy On-line , coordinated observations were performed of a lunar eclipse on 27 September and a partial solar eclipse on 12 October. Both events attracted many hundreds of observers from groups in almost all European countries and provisional reports have already been published on the Web. Many beautiful photographs and interesting reports about the activities of the individual groups are also available at their special Web sites. The Hot Week will last from Monday to Friday, 18-22 November and the time interval from 15:00-21:00 UT (16:00 - 22:00 Central European Time) will be the busiest. During this period, a variety of activities will take place. For instance, the groups will have the opportunity to contact professional astronomers at many observatories. They will also be invited to follow the other developments, e.g. the astronomical observations. The resulting images will immediately be made available on the Web. There will also be a Final Event involving all the groups. How to obtain more information about Astronomy On-line Astronomy On-line may be accessed through: http://www.eso.org/astronomyonline/ and http://www.algonet.se/~sirius/eaae.htm. National Astronomy On-line Committees have been established in many European countries. They have set up National Astronomy On-line Web-sites which can be reached directly from the sites indicated above. Information about the indivi

  15. Self-healing of defects in CaO coatings on V-5%Cr-5%Ti in liquid lithium

    SciTech Connect

    Park, J.H.; Kassner, T.F.

    1994-11-01

    In-situ electrical resistance of CaO coatings produced on V-5%Cr-5%Ti by exposure of the alloy to liquid Li that contained 0.5-85 wt % dissolved Ca was measured as a function of time at temperatures between 250 and 600{degrees}C. Examination of the specimens after cooling to room temperature revealed no spallation, but homogeneous crazing cracks were present in the CaO coating. Additional tests to investigate the in-situ self-healing behavior of the cracks indicated that rapid healing occurred at >360{degrees}C.

  16. On-line object feature extraction for multispectral scene representation

    NASA Technical Reports Server (NTRS)

    Ghassemian, Hassan; Landgrebe, David

    1988-01-01

    A new on-line unsupervised object-feature extraction method is presented that reduces the complexity and costs associated with the analysis of the multispectral image data and data transmission, storage, archival and distribution. The ambiguity in the object detection process can be reduced if the spatial dependencies, which exist among the adjacent pixels, are intelligently incorporated into the decision making process. The unity relation was defined that must exist among the pixels of an object. Automatic Multispectral Image Compaction Algorithm (AMICA) uses the within object pixel-feature gradient vector as a valuable contextual information to construct the object's features, which preserve the class separability information within the data. For on-line object extraction the path-hypothesis and the basic mathematical tools for its realization are introduced in terms of a specific similarity measure and adjacency relation. AMICA is applied to several sets of real image data, and the performance and reliability of features is evaluated.

  17. On-line cursive handwriting recognition using speech recognition methods

    Microsoft Academic Search

    T. Starner; John Makhoul; Richard Schwartz; George Chou

    1994-01-01

    A hidden Markov model (HMM) based continuous speech recognition system is applied to on-line cursive handwriting recognition. The base system is unmodified except for using handwriting feature vectors instead of speech. Due to inherent properties of HMMs, segmentation of the handwritten script sentences is unnecessary. A 1.1% word error rate is achieved for a 3050 word lexicon, 52 character, writer-dependent

  18. On-line sensing for healthier FPGA systems

    Microsoft Academic Search

    Kenneth M. Zick; John P. Hayes

    2010-01-01

    Electronic systems increasingly suffer from component variation, thermal hotspots, uneven wearout, and other subtle physical phenomena. Systems based on FPGAs have unique opportunities for adapting to such effects. Required, however, is a low-cost, fine-grained method for sensing physical parameters. This paper presents an approach to on-line sensing that includes a compact multi-use sensor implemented in reconfigurable logic, methods for instrumenting

  19. On-line slurry analyses by californium-252

    Microsoft Academic Search

    H. Braun; F. Riffel

    1977-01-01

    In chemical processing technology on-line activation methods gain an increasing importance for process monitoring and control.\\u000a In the paper presented a method is described according to which the different fluorspar contents at various strategic points\\u000a of a flotation plant are to be determined through neutron activation by 100 ?g252 californium. For that purpose, a continuous analytical system for on-stream process

  20. A new on-line resource for psycholinguistic studies

    Microsoft Academic Search

    Anna Szekely; Thomas Jacobsen; Simona D'Amico; Antonella Devescovi; Elena Andonova; Daniel Herron; Ching Ching Lu; Thomas Pechmann; Csaba Pléh; Nicole Wicha; Kara Federmeier; Irina Gerdjikova; Gabriel Gutierrez; Daisy Hung; Jeanne Hsu; Gowri Iyer; Kathryn Kohnert; Teodora Mehotcheva; Araceli Orozco-Figueroa; Angela Tzeng; Ovid Tzeng; Anal??a Arévalo; Andras Vargha; Andrew C Butler; Robert Buffington; Elizabeth Bates

    2004-01-01

    Picture naming is a widely used technique in psycholinguistic studies. Here, we describe new on-line resources that our project has compiled and made available to researchers on the world wide web at http:\\/\\/crl.ucsd.edu\\/~aszekely\\/ipnp\\/. The website provides access to a wide range of picture stimuli and related norms in seven languages. Picture naming norms, including indices of name agreement and latency,

  1. An on-line archive of reconstructed hippocampal neurons

    Microsoft Academic Search

    R. C Cannon; D. A Turner; G. K Pyapali; H. V Wheal

    1998-01-01

    We have developed an on-line archive of neuronal geometry to encourage the use of realistic dendritic structures in morphometry and for neuronal modeling, located at web address www.neuro.soton.ac.uk. Initially we have included full three-dimensional representations of 87 neurons from the hippocampus, obtained following intracellular staining with biocytin and reconstruction using Neurolucida. The archive system includes a structure editor for correcting

  2. On-Line Informed Consent Template The following is a template for informed consent of an on-line survey or questionnaire. It

    E-print Network

    Gering, Jon C.

    On-Line Informed Consent Template The following is a template for informed consent of an on that this study has been explained to you, and that you agree to participate. Example On-Line Informed Consent You

  3. Designing effective on-line continuing medical education.

    PubMed

    Zimitat, Craig

    2001-03-01

    The Internet, and new information and communication technologies available through the Internet, provides medical educators with an opportunity to develop unique on-line learning environments with real potential to improve physicians' knowledge and effect change in their clinical practice. There are approximately 100 websites offering on-line CME courses in the USA alone. However, few of these CME courses appear to be based on sound educational principles or CME research and may have little chance of achieving the broader goals of CME. The majority of these courses closely resemble their traditional counterparts (e.g. paper-based books are now electronic books) and appear to be mere substitutions for old-technology CME resources. Whilst some CME providers add unique features of the Internet to enrich their websites, they do not employ strategies to optimize the learning opportunities afforded by this new technology. The adoption of adult learning principles, reflective practice and problem-based approaches can be used as a foundation for sound CME course design. In addition, knowledge of Internet technology and the learning opportunities it affords, together with strategies to maintain participation and new assessment paradigms, are all needed for developing online CME. We argue for an evidence-based and strategic approach to the development of on-line CME courses designed to enhance physician learning and facilitate change in clinical behaviour. PMID:11371287

  4. Review of trigger and on-line processors at SLAC

    SciTech Connect

    Lankford, A.J.

    1984-07-01

    The role of trigger and on-line processors in reducing data rates to manageable proportions in e/sup +/e/sup -/ physics experiments is defined not by high physics or background rates, but by the large event sizes of the general-purpose detectors employed. The rate of e/sup +/e/sup -/ annihilation is low, and backgrounds are not high; yet the number of physics processes which can be studied is vast and varied. This paper begins by briefly describing the role of trigger processors in the e/sup +/e/sup -/ context. The usual flow of the trigger decision process is illustrated with selected examples of SLAC trigger processing. The features are mentioned of triggering at the SLC and the trigger processing plans of the two SLC detectors: The Mark II and the SLD. The most common on-line processors at SLAC, the BADC, the SLAC Scanner Processor, the SLAC FASTBUS Controller, and the VAX CAMAC Channel, are discussed. Uses of the 168/E, 3081/E, and FASTBUS VAX processors are mentioned. The manner in which these processors are interfaced and the function they serve on line is described. Finally, the accelerator control system for the SLC is outlined. This paper is a survey in nature, and hence, relies heavily upon references to previous publications for detailed description of work mentioned here. 27 references, 9 figures, 1 table.

  5. The new on-line Czech Food Composition Database.

    PubMed

    Machackova, Marie; Holasova, Marie; Maskova, Eva

    2013-10-01

    The new on-line Czech Food Composition Database (FCDB) was launched on http://www.czfcdb.cz in December 2010 as a main freely available channel for dissemination of Czech food composition data. The application is based on a complied FCDB documented according to the EuroFIR standardised procedure for full value documentation and indexing of foods by the LanguaL™ Thesaurus. A content management system was implemented for administration of the website and performing data export (comma-separated values or EuroFIR XML transport package formats) by a compiler. Reference/s are provided for each published value with linking to available freely accessible on-line sources of data (e.g. full texts, EuroFIR Document Repository, on-line national FCDBs). LanguaL™ codes are displayed within each food record as searchable keywords of the database. A photo (or a photo gallery) is used as a visual descriptor of a food item. The application is searchable on foods, components, food groups, alphabet and a multi-field advanced search. PMID:23601403

  6. On-line estimation of glucose and biomass concentration in penicillin fermentation batch process using particle filter with constraint

    Microsoft Academic Search

    Zhonggai Zhao; Xinguang Shao; Biao Huang; Fei Liu

    2011-01-01

    In a penicillin fermentation process, substrate concentration and biomass concentration greatly influence the yield of the targeted product. However, there are few on-line sensors available to measure these variables in real-time. In this paper, a compact mechanism model is employed to simulate the fed-batch process, and a particle filter is introduced to estimate the substrate and biomass states. Particle filters

  7. Engineering nanostructured electrodes away from equilibrium for lithium-ion Yanyi Liu, Dawei Liu, Qifeng Zhang and Guozhong Cao*

    E-print Network

    Cao, Guozhong

    , University of Washington, Seattle, WA, 98195, USA Yanyi Liu Yanyi Liu is a Ph.D. student underEngineering nanostructured electrodes away from equilibrium for lithium-ion batteries Yanyi Liu, Dawei Liu, Qifeng Zhang and Guozhong Cao* Received 5th December 2010, Accepted 15th February 2011 DOI

  8. QUANTITATIVE RELAXATION TEMPLATES FOR THE HUMAN BRAIN AT 3T Fang Cao, Olivier Commowick, Camille Maumet, Christian Barillot

    E-print Network

    Paris-Sud XI, Université de

    QUANTITATIVE RELAXATION TEMPLATES FOR THE HUMAN BRAIN AT 3T Fang Cao, Olivier Commowick, Camille, T2, T 2 and maps from the human brain at 3T. The qMRI templates were built from a population of 20 of the human brain do not include quantitative features of the human brain such as those extracted from

  9. First-principles and experimental characterization of the electronic and optical properties of CaS and CaO

    NASA Astrophysics Data System (ADS)

    Poncé, S.; Bertrand, B.; Smet, P. F.; Poelman, D.; Mikami, M.; Gonze, X.

    2013-05-01

    Doped alkaline-earth chalcogenides are interesting photoluminescent materials for opto-electronic applications. It is crucial to have an extended knowledge about the undoped bulk CaS and CaO since all the excited state properties of the doped material heavily depend on it. In this work we investigate the structural parameters, electronic band structures, macroscopic dielectric constants and absorption spectra for CaS and CaO compounds. Their quasi-particle band structure in the GW approximation yields a value of 4.28 eV and 6.02 eV for the indirect theoretical particle gap of CaS and CaO, respectively. The imaginary part of the macroscopic dielectric function ?(?) is computed including excitonic effects through the Bethe-Salpeter equation. The onset of absorption is within 0.1 eV of the experimental one and the calculated spectrum shows a qualitative agreement with experiment. Our computed exciton binding energies are 0.27 eV and 0.40 eV for CaS and CaO, respectively.

  10. Superconductivity in Iron Telluride Thin Films under Tensile Stress L. X. Cao,1,* X. Y. Wang,2

    E-print Network

    Wang, Wei Hua

    Superconductivity in Iron Telluride Thin Films under Tensile Stress Y. Han,1 W. Y. Li,1 L. X. Cao,1 for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese a tensile stress state, superconductivity of 13 K was introduced into FeTe, a nonsuperconducting parent

  11. OCAO Computer Refreshment Policy The NOAA CAO is responsible for budgeting and procuring all personal computers and other

    E-print Network

    6/20/2007 OCAO Computer Refreshment Policy Purpose: The NOAA CAO is responsible for budgeting and procuring all personal computers and other support computers used by OCAO staff. To facilitate adequate capital planning and clarify acquisition policies, the following Computer Refreshment Policy

  12. Max-min Fairness in 802.11 Mesh Networks Douglas J. Leith, Qizhi Cao, Vijay G. Subramanian

    E-print Network

    Kuzmanovic, Aleksandar

    1 Max-min Fairness in 802.11 Mesh Networks Douglas J. Leith, Qizhi Cao, Vijay G. Subramanian fairness methods to be generalised to this class of networks. This creates a solid theoretical underpinning for fairness analysis and resource allocation in this practically important class of networks. For the special

  13. Indexing DNA Sequences Using q-grams Xia Cao, Shuai Cheng Li, and Anthony K. H. Tung

    E-print Network

    Tung, Anthony Kum Hoe

    Indexing DNA Sequences Using q-grams Xia Cao, Shuai Cheng Li, and Anthony K. H. Tung {caoxia to the interest, this paper presents a method for indexing the DNA sequences efficiently based on q. Two level index ­ hash table and c-trees ­ are proposed based on the q-grams of DNA sequences

  14. An Air Traffic Prediction Model based on Kernel Density Estimation Yi Cao,1 Lingsong Zhang,2 and Dengfeng Sun3

    E-print Network

    Sun, Dengfeng

    through sophisticated flight dynamics [1]. However, for the Air Traffic Control Sys- tem Command Center at an Air Route Traffic Control Center (simply denoted as Center hereafter) level [2]. It forecasts aircraftAn Air Traffic Prediction Model based on Kernel Density Estimation Yi Cao,1 Lingsong Zhang,2

  15. Key-linked on-line databases for clinical research.

    PubMed

    Müller, Thomas H

    2012-01-01

    Separating patient identification data from clinical data and/or information about biomaterial samples is an effective data protection measure, especially in clinical research employing "on-line", i.e., web-based, data capture. In this paper, we show that this specialised technique can be generalised into a network architecture of interconnected on-line databases potentially serving a variety of purposes. The basic idea of this approach consists of maintaining logical links, i.e., common record keys, between corresponding data structures in pairs of databases while keeping the actual key values hidden from clients. For client systems, simultaneous access to corresponding records is mediated by temporary access tokens. At the relational level, these links are represented by arbitrary unique record keys common to both databases. This architecture allows for integration of related data in different databases without replicating or permanently sharing this data in one place. Each participating on-line database can determine the degree of integration by specifying linkage keys only for those data structures that may be logically connected to other data. Logical links can de designed for specific use cases. In addition, each database controls user access by enforcing its own authorisation scheme. Another advantage is that individual database owners retain considerable leeway in adapting to changing local requirements without compromising the integration into the network. Beyond protecting individual subject identification data, this architecture permits splitting a cooperatively used data pool to achieve many kinds of objectives. Application examples could be clinical registries needing subject contact information for follow-up, biomaterial banks with or without genetic information, and automatic or assisted integration of data from electronic medical records into research data. PMID:22874246

  16. Luminescence of F sup + centers in CaO crystals under pulsed-laser excitation

    SciTech Connect

    Park, J.L.; Chen, Y. (Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6031 (USA)); Williams, G.P. Jr.; Williams, R.T. (Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27109-7507 (USA)); Pogatshnik, G.J. (Department of Physics, Southern Illinois University, Edwardsville, Illinois 62026-1654 (USA))

    1991-05-15

    Luminescence of {ital F}{sup +} centers (oxygen vacancies each with one electron) has been investigated in thermochemically reduced, electron-irradiated, and neutron-irradiated CaO crystals. Time-dependent emission spectra following laser excitation into the {ital F}{sup +} absorption band at 351 nm were measured for the three types of crystals. We observed a fast component with a lifetime {le}10 ns and a slow decay attributed to charge trapping and transport. The intensity and decay kinetics of the {ital F}{sup +} phosphorescence depended on the method by which the defects had been produced. Estimated gain coefficients for stimulated emission under pulsed laser pumping are less than 0.1 cm{sup {minus}1}. These values are significantly smaller than the absorption coefficient at the emission wavelength.

  17. FOLDOC: Free On-Line Dictionary of Computing

    NSDL National Science Digital Library

    A great concept/project started in 1985 by Denis Howe, the Free On-Line Dictionary of Computing (FOLDOC) now contains some 7900+ entires. It is a browsable and searchable dictionary of "acronyms, programming languages, tools, architectures, operating systems, networking, theory, mathematics, telecoms, institutions, companies, projects, products, history..." and etc. Definitions are voluntarily contributed by users and filtered through the editor. Following a search, the list of terms alphabetically nearest to the search pattern are displayed along with any cross-references--a bonus for the spelling-challenged user. Several mirror sites are provided.

  18. Cerritos College Earth Science On-Line Tutorial Center

    NSDL National Science Digital Library

    Cerritos College

    This site feature on-line tutorials on a variety of topics including earth materials, earth processes, landform identification, topographic map reviews, earth science math review and more. Students are encouraged to review their textbooks and notes before beginning, but most tutorials offer a brief subject overview to supplement tasks such as vocabulary quizzes, visual identification, and multiple-choice or fill-in-the-blank exercises. Answers are provided so that students may asses their own progress. The site also offers links to other web-based tutorials, as well as lecture notes by Cerritos College Faculty on specific earth science topics.

  19. On-line capillary viscometer for a continuous liquefaction unit

    SciTech Connect

    Fuchs, W.; Weiss, M.L.; Krastman, D.; Kornosky, R.M.; Ruether, J.A.

    1984-01-01

    The system described allows on-line viscosity measurements of a wide variety of process fluids at the process environment. The dynamic range of the viscosity to be measured is determined by the automatic calibration procedure for the differential pressure cell, which currently limits the resolution to 4% of the full range. The maximum measurable viscosity is a strong function of the dimensions of the capillary tube (proportional to the inverse fourth power of the inner diameter); therefore by replacing the capillary, the viscometer can be adjusted to almost any viscosity occurring in a realistic process environment. 12 refs., 20 figs., 4 tabs.

  20. Anisotropic. cap alpha. -emission of on-line separated isotopes

    SciTech Connect

    Wouters, J.; Vandeplassche, D.; van Walle, E.; Severijns, N.; Van Haverbeke, J.; Vanneste, L.

    1987-12-10

    The technical realization of particle detection at very low temperatures (4K) has made it possible to study for the first time the anisotropic ..cap alpha..-decay of oriented nuclei which have been produced, separated and implanted on line. The measured ..cap alpha..-angular distributions reveal surprising new results on nuclear aspects as well as in solid state physics. The nuclear structure information from these data questions the older ..cap alpha..-decay theoretical interpretation and urges for a reaxamination of the earliest work on anisotropic ..cap alpha..-decay.

  1. Background issues for on-line aircraft documentation

    NASA Technical Reports Server (NTRS)

    Russell, C. Ray

    1991-01-01

    Currently, almost all aircraft documentation in commercial aircraft cockpits is presented via hardcopy manuals. Several recent projects are aimed at eliminating all paper documentation in cockpits using electronic libraries. Electronic libraries encompass diverse information bases including aircraft system documentation, operations and procedures, checklists, maintenance logs, minimum equipment lists, maps and charts, and flight management information. These electronic libraries are envisioned to be embedded in the avionics so as to provide real time monitoring and display of information. Background issues are examined (motivation, information retrieval models, and preliminary designs) for the on-line presentation of aircraft systems documentation including operations, procedures, and checklists.

  2. Compendium of On-Line Soil Survey Information

    NSDL National Science Digital Library

    Rossiter, D.G. (David G.)

    D.G. Rossiter from the International Institute for Geo-Information Science and Earth Observation has compiled the Compendium of On-Line Soil Survey Information. The Soil Survey Institutes & Activities page contains information about and links to soil survey institutes from around the world and the digital soil geographic databases they offer. Example institutes include Scotland's Macaulay Land Use Research Institute, Belgium's Research Team Laboratory for Soil and Water, Romania's Research Institute for Soil Science and Agrochemistry, the Natural Resources Conservation Service, and many more. Anyone conducting similar research or interested in worldwide soil information will surely appreciate this simple but helpful resource.

  3. On-line computer monitoring by signature analysis

    SciTech Connect

    Bergeson, G.C.; Chick, D.R.

    1986-10-01

    This report describes the signature analysis method of monitoring an on-line (in operation) computer system without disturbing its operation, modifying its computer program or changing its wiring. It is shown how the computer instruction sequence and corresponding control and status signals are verified for a 8085 microprocessor system. If these are correct, there is a high probability that the computer is functioning correctly. A possible hardware implementation of a monitor for a 8085 system is given. Data from an existing computer system is used to illustrate how a monitor can be used.

  4. On-line optimal NGL recovery in lean oil plants

    SciTech Connect

    Berkowitz, P.N.; Papadopoulos, M.N. (Continental Controls, Inc., Houston, TX (United States)); Gamez, J.P. (Gas Research Inst., Chicago, IL (United States))

    1993-04-01

    On-line, adaptive multivariable control (MVC) has been used to provide cost-effective solutions for optimal control of continuous processes. Such an approach has been implemented successfully in worldscale heavy chemical plants during the past four years. More recently, similar successful applications have been implemented in a gas processing facility involving the separation of CO[sub 2] from ethane, and in gas treating, fractionation and NGL recovery by cryogenic and refrigerated lean oil processes. This paper describes these two applications and results from the field testing in the Wyoming and Texas facilities.

  5. Agent-based station for on-line diagnostics by self-adaptive laser Doppler vibrometry.

    PubMed

    Serafini, S; Paone, N; Castellini, P

    2013-12-01

    A self-adaptive diagnostic system based on laser vibrometry is proposed for quality control of mechanical defects by vibration testing; it is developed for appliances at the end of an assembly line, but its characteristics are generally suited for testing most types of electromechanical products. It consists of a laser Doppler vibrometer, equipped with scanning mirrors and a camera, which implements self-adaptive bahaviour for optimizing the measurement. The system is conceived as a Quality Control Agent (QCA) and it is part of a Multi Agent System that supervises all the production line. The QCA behaviour is defined so to minimize measurement uncertainty during the on-line tests and to compensate target mis-positioning under guidance of a vision system. Best measurement conditions are reached by maximizing the amplitude of the optical Doppler beat signal (signal quality) and consequently minimize uncertainty. In this paper, the optimization strategy for measurement enhancement achieved by the down-hill algorithm (Nelder-Mead algorithm) and its effect on signal quality improvement is discussed. Tests on a washing machine in controlled operating conditions allow to evaluate the efficacy of the method; significant reduction of noise on vibration velocity spectra is observed. Results from on-line tests are presented, which demonstrate the potential of the system for industrial quality control. PMID:24387408

  6. Time resolved on-line nuclear orientation (TR-OLNO)

    NASA Astrophysics Data System (ADS)

    Stone, N. J.

    1992-08-01

    Conventional on-line nuclear orientation (OLNO) involves continuous implantation of unpolarised nuclei which are cooled to milli-Kelvin temperatures by nuclear spin lattice relaxation. Anisotropy of radiation from the cold, polarised nuclei is analysed to yield nuclear moments and decay properties. Incomplete relaxation prior to decay complicates analysis and, as half-lives shorten on moving further from stability, places an ultimate limit on the range of nuclei which can be studied by OLNO. This paper introduces a new method, time resolved on-line nuclear orientation (TR-OLNO) in which the implanted beam is pulsed and study is made of the nuclear relaxation itself to yield nuclear g-factors. Decay scheme parameters can also be extracted when the relaxation is observed. This method has its optimum application as half-life and relaxation time become comparable, thus extending the range of the OLNO technique. The basic principles of the new method are introduced and its application to the study of decay chains of implanted even- and odd- A nuclei is discussed. The ability to deal with "inherited" orientation in a decay sequence is emphasised. Examples are given of existing TR-OLNO studies of light Au isotopes by the NICOLE Collaboration.

  7. Pulsed Neurton Elemental On-Line Material Analyzer

    DOEpatents

    Vourvopoulos, George (Bowling Green, KY)

    2002-08-20

    An on-line material analyzer which utilizes pulsed neutron generation in order to determine the composition of material flowing through the apparatus. The on-line elemental material analyzer is based on a pulsed neutron generator. The elements in the material interact with the fast and thermal neutrons produced from the pulsed generator. Spectra of gamma-rays produced from fast neutrons interacting with elements of the material are analyzed and stored separately from spectra produced from thermal neutron reactions. Measurements of neutron activation takes place separately from the above reactions and at a distance from the neutron generator. A primary passageway allows the material to flow through at a constant rate of speed and operators to provide data corresponding to fast and thermal neutron reactions. A secondary passageway meters the material to allow for neutron activation analysis. The apparatus also has the capability to determine the density of the flowed material. Finally, the apparatus continually utilizes a neutron detector in order to normalize the yield of the gamma ray detectors and thereby automatically calibrates and adjusts the spectra data for fluctuations in neutron generation.

  8. Polar On-Line Acquisition Relay and Transmission System (POLARATS)

    SciTech Connect

    Yuracko, K.

    2004-07-15

    POLARATS (Polar On-Line Acquisition Relay And Transmission System) is being developed by YAHSGS LLC (YAHSGS) and Oak Ridge National Laboratory (ORNL) to provide remote, unattended monitoring of environmental parameters under harsh environmental conditions. In particular, instrumental design and engineering is oriented towards protection of human health in the Arctic, and with the additional goal of advancing Arctic education and research. POLARATS will obtain and transmit environmental data from hardened monitoring devices deployed in locations important to understanding atmospheric and aquatic pollutant migration as it is biomagnified in Arctic food chains. An Internet- and personal computer (PC)-based educational module will provide real time sensor data, on-line educational content, and will be integrated with workbooks and textbooks for use in middle and high school science programs. The educational elements of POLARATS include an Internet-based educational module that will instruct students in the use of the data and how those data fit into changing Arctic environments and food chains. POLARATS will: (1) Enable students, members of the community, and scientific researchers to monitor local environmental conditions in real time over the Internet; and (2) Provide additional educational benefits through integration with middle- and high-school science curricula. Information will be relayed from POLARATS devices to classrooms and libraries along with custom-designed POLARATS teaching materials that will be integrated into existing curricula to enhance the educational benefits realized from the information obtained.

  9. On-line measurements of diesel nanoparticle composition and volatility

    NASA Astrophysics Data System (ADS)

    Sakurai, Hiromu; Tobias, Herbert J.; Park, Kihong; Zarling, Darrick; Docherty, Kenneth S.; Kittelson, David B.; McMurry, Peter H.; Ziemann, Paul J.

    A thermal desorption particle beam mass spectrometer (TDPBMS) and tandem differential mobility analyzers (TDMA) were used for on-line measurements of the chemical composition and volatility of nanoparticles and larger particles emitted from a modern, heavy-duty diesel engine operated at light and medium loads under laboratory conditions. Temperature-dependent TDPBMS mass spectra and mass spectra obtained using spectrally distinctive oil and synthetic Fischer-Tropsch fuel were analyzed using mass spectral matching methods to obtain quantitative information on the contributions of fuel, oil, oxidation products, and sulfuric acid to particle composition. TDMA measurements of volatility yielded information on nanoparticle vapor pressures and therefore on the composition of organic components. The results indicate that, for these operating conditions, the volatile component of both diesel nanoparticles and larger particles is comprised of at least 95% unburned lubricating oil. TDMA volatility measurements also detected residual species a few nanometers in diameter, which may be non-volatile cores (soot, metal oxide) or low-volatility organic compounds. These on-line analyses provide new insights into the mechanisms of diesel nanoparticle formation.

  10. Precise on-line position measurement for particle therapy

    NASA Astrophysics Data System (ADS)

    Actis, O.; Meer, D.; König, S.

    2014-12-01

    An on-line beam position monitoring and regular beam stability tests are of utmost importance for the Quality Assurance (QA) of the patient treatment at any particle therapy facility. The Gantry 2 at the Paul Scherrer Institute uses a strip ionization chamber for the on-line beam position verification. The design of the strip chamber placed in the beam in front of the patient allows for a small beam penumbra in order to achieve a high-quality lateral beam delivery. The position error of 1 mm in a lateral plane (plane perpendicular to the beam direction) can result in a dose inhomogeneity of more than 5%. Therefore the goal of Gantry 2 commissioning was to reach a sub-millimeter level of the reconstruction accuracy in order to bring a dose uncertainty to a level of 1%. In fact, we observed that for beams offered by Gantry 2 signal profiles in a lateral plane can be reconstructed with a precision of 0.1 mm. This is a necessary criterion to perform a reliable patient treatment. The front end electronics and the whole data processing sequence have been optimized for minimizing the dead time in between two consecutive spots to about 2 ms: the charge collection is performed in about 1 ms, read-out takes place in about 100?s while data verification and logging are completed in less than 1 ms.

  11. On-line social interactions and executive functions

    PubMed Central

    Ybarra, Oscar; Winkielman, Piotr

    2012-01-01

    A successful social interaction often requires on-line and active construction of an ever-changing mental-model of another person’s beliefs, expectations, emotions, and desires. It also requires the ability to maintain focus, problem-solve, and flexibly pursue goals in a distraction-rich environment, as well as the ability to take-turns and inhibit inappropriate behaviors. Many of these tasks rely on executive functions (EF) – working memory, attention/cognitive control, and inhibition. Executive functioning has long been viewed as relatively static. However, starting with recent reports of successful cognitive interventions, this view is changing and now EFs are seen as much more open to both short- and long-term “training,” “warm-up,” and “exhaustion” effects. Some of the most intriguing evidence suggests that engaging in social interaction enhances performance on standard EF tests. Interestingly, the latest research indicates these EF benefits are selectively conferred by certain on-line, dynamic social interactions, which require participants to mentally engage with another person and actively construct a model of their mind. We review this literature and highlight its connection with evolutionary and cultural theories emphasizing links between intelligence and sociality. PMID:22509160

  12. On-line He-cryostat for Mössbauer spectroscopy with short-lived radioactive sources

    NASA Astrophysics Data System (ADS)

    Trautmannsheimer, M.; Komninos, P.; Huenges, E.; Morinaga, H.

    1993-12-01

    A special on-line He-cryostat for Mössbauer spectroscopy with accelerator-produced radioactive sources was developed. The design of this cryostat allows a computer-controlled irradiation of different targets and the fast transport of these sources to the absorber. Therefore, this setup is suitable for Mössbauer spectroscopy even with very short-lived sources. The sources are cooled down to 15 K by a cryogenerator capable of absorbing a beam power of 10 W in this temperature range. The liquid helium-cooled absorber is moved by a piezoelectric drive unit. Using this cryostat the sharp resonance of the Mössbauer effect in 63Ni was observed for the first time. In this experiment data from more than 1500 63Co sources (T {1}/{2} = 27 s) have been collected.

  13. Evidence for on-line visual guidance during saccadic gaze shifts.

    PubMed Central

    Grealy, M A; Craig, C M; Lee, D N

    1999-01-01

    Rapid orientating movements of the eyes are believed to be controlled ballistically. The mechanism underlying this control is thought to involve a comparison between the desired displacement of the eye and an estimate of its actual position (obtained from the integration of the eye velocity signal). This study shows, however, that under certain circumstances fast gaze movements may be controlled quite differently and may involve mechanisms which use visual information to guide movements prospectively. Subjects were required to make large gaze shifts in yaw towards a target whose location and motion were unknown prior to movement onset. Six of those tested demonstrated remarkable accuracy when making gaze shifts towards a target that appeared during their ongoing movement. In fact their level of accuracy was not significantly different from that shown when they performed a 'remembered' gaze shift to a known stationary target (F3,15 = 0.15, p > 0.05). The lack of a stereotypical relationship between the skew of the gaze velocity profile and movement duration indicates that on-line modifications were being made. It is suggested that a fast route from the retina to the superior colliculus could account for this behaviour and that models of oculomotor control need to be updated. PMID:10518326

  14. FEDIX on-line information service: Design, develop, test, and implement, an on-line research and education information service

    SciTech Connect

    Rodman, J.A.

    1992-01-01

    The FEDIX Annual Status Report provides details regarding an on-line information project designed, developed and implemented by Federal Information Exchange, Inc., a diversified information services company. This document details the project design activities, summarizes the developmental phases of the project and describes the implementation activities generated to fulfill the project's objectives. The information contained in this document illustrates FIE's continuing commitment to serve as the link that facilitates the dissemination of federal information to the education community. This report reviews the project accomplishments and describes intended service enhancements.

  15. Impacts of quicklime (CaO) on the toxicity of copper (CuSO4, 5H2O) to fish and fish food organisms.

    PubMed

    Das, Bipul Kumar; Das, Nina

    2005-10-01

    Static bioassays of 96 h duration were conducted in the laboratory using fry of common carp (Cyprinus carpio), adult tubificid worm (Branchiura sowerbyi) and adult copepod plankton (Cyclops viridis) to determine LC50 values of Cu and CaO to these organisms and effects of interaction between Cu and CaO. Ninety-six hour LC(50) values of Cu to fry of common carp, worm and copepod were found to be 1.40 mgl(-1), 0.08 mgl(-1) and 0.03 mgl(-1) respectively. CaO up to 500 mgl(-1) did not produce any mortality of the fry of common carp up to 96 h. But 96 h LC50 values of CaO to worm and copepod were 83.00 mgl(-1) and 27.80 mgl(-1) respectively. When common carp fry, worm and the copepod were exposed to respective LC50 dose of Cu in presence of varying concentration of CaO, mortality of the organisms significantly reduced and was found inversely correlated with the doses of CaO [y = 48.36-0.807x, r = -0.99 (n = 7) for fish; y = 44.46-0.146x, r = -0.97 (n = 7) for worm; y = 49.46-0.66x, r = -0.99 (n = 7) for the copepod]. The present results indicate that CaO is non-toxic to fish and is capable of reducing the toxicity of Cu to fish while CaO and Cu are antagonistic to each other for the worm and the copepod. Potential of using CaO as antitoxic agent for Cu in water is discussed. PMID:16168741

  16. Dynamical solution of the on-line minority game

    NASA Astrophysics Data System (ADS)

    Coolen, A. C. C.; Heimel, J. A. F.

    2001-12-01

    We solve the dynamics of the on-line minority game (MG), with general types of decision noise, using generating functional techniques a la De Dominicis and the temporal regularization procedure of Bedeaux et al. The result is a macroscopic dynamical theory in the form of closed equations for correlation and response functions defined via an effective continuous-time single-trader process, which are exact in both the ergodic and in the non-ergodic regime of the MG. Our solution also explains why, although one cannot formally truncate the Kramers-Moyal expansion of the process after the Fokker-Planck term, upon doing so one still finds the correct solution, that the previously proposed diffusion matrices for the Fokker-Planck term are incomplete, and how previously proposed approximations of the market volatility can be traced back to ergodicity assumptions.

  17. On-line monitoring system for downhole temperature and pressure

    NASA Astrophysics Data System (ADS)

    Shou, Ma; Jianchun, Guo; Yanli, Guo; Jun, Cao; Boming, Zhang

    2014-08-01

    To overcome the downhole space limitation, eccentric tubing was designed. Two fiber Bragg grating (FBG) sensors written in one optical fiber were integrated into the specially designed tubing to form an on-line monitoring system, and a protective casing was designed to isolate the FBG sensors from the harsh environment. The wavelengths of the FBGs were recorded at certain temperatures and pressures in order to calibrate the temperature and pressure sensitivity, respectively. Both the temperature and the pressure exhibit good linear relationships with the wavelengths of the FBGs, which suggest that they can be represented as a function of the wavelength and generated via a data analysis system. The good linear relationships also proved that the sensing area was well sealed. The temperature was measured by the FBG sensor and a thermocouple at the same time, and good agreement was found between these results, validating the credibility of this system.

  18. Issues for Bringing Electron Beam Irradiators On-Line

    SciTech Connect

    Kaye, R.J.; Turman, B.N.

    1999-04-20

    Irradiation of red meat and poultry has been approved by the U.S. FDA, and the U.S. Department of Agriculture's rule for processing red meat is out for comment. Looking beyond the current issues of packaging materials, labeling, and consumer acceptance, this paper reviews the next step of implementation and how to remove, or at least reduce, the barriers to utilization. Polls of the user community identified their requirements for electron beam or x-ray processing of meat or poultry and their concerns about implementation for on-line processing. These needs and issues are compared to the capabilities of the accelerator industry. The critical issues of beam utilization and dose uniformity, factors affecting floor space requirements, and treatment costs are examined.

  19. An on-line technique for monitoring propionic acid fermentation.

    PubMed

    Benjelloun, Houda; Rochex, Alice; Lecouturier, Didier; Dechemi, Siham; Lebeault, Jean-Michel

    2005-08-01

    An on-line technique, based on measuring the increase in pressure due to CO(2) release in a closed air-tight reactor, was used to evaluate the fermentation of lactate by propionibacteria. The method was applied to batch cultures of Propionibacterium shermanii grown in yeast extract/sodium lactate medium containing lactate as a carbon source under micro-aerophilic conditions. Gas pressure evolution was compared both with substrate consumption and metabolites production and with acidification and growth. Linear relationships were found between gas pressure variation, lactate consumption and propionate and acetate production. The technique also enabled the evaluation of total CO(2) produced, by taking account of pressure, oxygen and pH measurements. These results tend to show that this simple and rapid method could be useful to monitor propionic acid bacteria growth. PMID:15682290

  20. Enabling the On-line Intrinsic Evolution of Analog Controllers

    NASA Technical Reports Server (NTRS)

    Gwaltney, David A.; Ferguson, Michael I.

    2005-01-01

    The intrinsic evolution of analog controllers to provide closed-loop control of the speed of a DC motor has been previously demonstrated at NASA Marshall Space Flight Center. A side effect of the evolutionary process is that during evolution there are necessarily poor configurations to be evaluated that could cause damage to the plant, This paper concerns the development and implementation of a safe Evolvable Analog Controller (EAC) architecture able to evolve controllers on-line even in the presence of these poor configurations, The EAC concept is discussed and experimental results are presented that show the feasibility of the approach This EAC architecture represents the first in a series of steps required to make deployment of an evolvable controller a reality.

  1. Enabling the On-Line Intrinsic Evolution of Analog Controllers

    NASA Technical Reports Server (NTRS)

    Gwaltney, David A.; Ferguson, Michael I.

    2005-01-01

    The intrinsic evolution of analog controllers to provide closed-loop control of the speed of a DC motor has been previously demonstrated at NASA Marshall Space Flight Center. A side fleet of the evolutionary process is that during evolution there are necessarily poor configurations to be evaluated that could cause damage to the plant. This paper concern the development and implementation of a safe Evolvable Analog Controller (EAC) architecture able to evolve controllers on-line even in the presence of these poor configurations. The EAC concept is discussed and experimental results are presented that show the feasibility of the approach This EAC architecture represents the first in a series of steps required to make deployment of an evolvable controller a reality.

  2. Research on the field on-line automatic detection of infrared thermal imager MRTD based on infrared image's gray level difference

    NASA Astrophysics Data System (ADS)

    Chen, Zhibin; Liu, Yuxiang; Xue, Mingxi; Liu, Baohua; Hou, Zhangya

    2011-11-01

    The traditional detection of minimum resolvable temperature difference (MRTD) is mostly under laboratory conditions, and the results are obtained by the tester's subjective interpretation. Because of its large and complex system Structure, it is very difficult to apply in the field on-line detection. In this paper a set of field on-line detection system of infrared thermal imager is designed, single blackbody control technology is adopted to simulate temperature difference of four bars target and environment, and a coaxial Cassegrain collimator is used to simulate infinity target, through this way volume and quality of the detecting equipment is effectively reduced. Instead of human eyes we use CCD to capture the thermal imager's imaging result, an effective filtering method which combine linear filter and nonlinear filter is adopted to reduce noise and enhance the captured image, then four bars target area is accurately extracted as the target area, to reduce noise a rectangular area which just contains four bars target is extracted as the background area. Using relationship between temperature difference of four bars target and environment and gray level difference in corresponding infrared image, the parameter MRTD of the infrared thermal imager can be calculated, the experiments show that the result is in good agreement with the result of the human eye observation. The detection system has a simple structure, small size, low cost, high level of automation, etc. It can realize the on-line automatic detection of MRTD under field conditions better.

  3. State of the art in on-line techniques coupled to flow injection analysis FIA/on-line- a critical review

    PubMed Central

    Puchades, R.; Maquieira, A.; Atienza, J.; Herrero, M. A.

    1990-01-01

    Flow injection analysis (FIA) has emerged as an increasingly used laboratory tool in chemical analysis. Employment of the technique for on-line sample treatment and on-line measurement in chemical process control is a growing trend. This article reviews the recent applications of FlA. Most papers refer to on-line sample treatment. Although FIA is very well suited to continuous on-line process monitoring, few examples have been found in this areamost of them have been applied to water treatment or fermentation processes. PMID:18925271

  4. Combined target-ion source unit for production of rare nuclides

    SciTech Connect

    Panteleev, V.N.; Barzakh, A.E.; Fedorov, D.V.; Ionan, A.M.; Mezilev, K.A.; Moroz, F.V.; Orlov, S.Yu.; Volkov, Yu.M.; Andrighetto, A.; Lhersonneau, G.; Rizzi, V.; Tecchio, L.B.; Dubois, M.; Gaubert, G.; Jardin, P.; Lecesne, N.; Leroy, R.; Pacquet, J.Y.; Saint Laurent, M.G.; Villari, A.C.C. [Petersburg Nuclear Physics Institute RAS, Leningrad district 188350 (Russian Federation); Laboratori Nationali di Legnaro, INFN, Viale dell Universita 2, 35020 Legnaro (Padova) (Italy); Grand Accelerateur National d'Ions Lourds (GANIL), Boulevard Henri Becquerel, BP 55027, F-14076 Caen Cedex 5 (France); Institute de Physique Nucleaire d'Orsay Groupe Source d'Ions, Batiment 106, Division Accelerateur, F-91406 Orsay Cedex (France); Laboratori Nationali del Sud, INFN, via Santa Sofia, 44-95123 Catania (Italy)] (and others)

    2006-03-15

    A combined target-ion source unit (ionizing target) has been developed for the on-line production of radioactive single-charged ions. The target is able to withstand temperatures of up to 2500 deg. C and also acts as an ion source of surface, electron-beam, and laser ionizations. Using tantalum foil as a target material, the on-line combined target-ion source unit efficiency, which is the product of the ionization and release efficiencies, has been obtained for neutron-deficient isotopes of Eu, Gd, and Yb. These nuclides were ionized by the surface ionization inside a hot tungsten target container, holding tantalum foils as a target material. The results of the combined target-ion source unit use for on-line laser resonant ionization spectroscopy investigation of neutron-deficient Gd isotopes have been also presented. For neutron-rich isotopes produced from a high-density UC target, which were ionized by the surface ionization inside the target container, the ionization efficiency values have been obtained close to 100% for Rb and Cs and 10% for In. For Ag and Sn neutron-richisotopes, the values of the electron-beam ionization efficiency in the volume of the targetcontainer, correspondingly equal to 4% and 2%, have been obtained.

  5. 7 CFR 42.143 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  6. 7 CFR 42.135 - Normal, tightened or reduced on-line inspection.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...false Normal, tightened or reduced on-line inspection. 42.135 Section...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...FOR CONDITION OF FOOD CONTAINERS On-Line Sampling and Inspection...

  7. 7 CFR 42.140 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  8. 7 CFR 42.143 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  9. 7 CFR 42.135 - Normal, tightened or reduced on-line inspection.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...false Normal, tightened or reduced on-line inspection. 42.135 Section...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...FOR CONDITION OF FOOD CONTAINERS On-Line Sampling and Inspection...

  10. 7 CFR 42.143 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  11. 7 CFR 42.140 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  12. 7 CFR 42.135 - Normal, tightened or reduced on-line inspection.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...false Normal, tightened or reduced on-line inspection. 42.135 Section...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...FOR CONDITION OF FOOD CONTAINERS On-Line Sampling and Inspection...

  13. 7 CFR 42.143 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  14. 7 CFR 42.140 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  15. 7 CFR 42.143 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  16. 7 CFR 42.140 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  17. 7 CFR 42.140 - Operating Characteristic (OC) curves for on-line sampling and inspection.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...Operating Characteristic (OC) curves for on-line sampling and inspection. 42...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...Operating Characteristic (OC) curves for on-line sampling and inspection....

  18. 7 CFR 42.135 - Normal, tightened or reduced on-line inspection.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...false Normal, tightened or reduced on-line inspection. 42.135 Section...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...FOR CONDITION OF FOOD CONTAINERS On-Line Sampling and Inspection...

  19. 7 CFR 42.135 - Normal, tightened or reduced on-line inspection.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...false Normal, tightened or reduced on-line inspection. 42.135 Section...Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections...FOR CONDITION OF FOOD CONTAINERS On-Line Sampling and Inspection...

  20. RECOMMENDED PRACTICES FOR ON-LINE MEASUREMENT OF RESIDUAL CHLORINE IN WASTEWATERS

    EPA Science Inventory

    This document provides users with information that assists them in specifying, installing, calibrating, maintaining and monitoring the subsequent performance of on-line residual chlorine analyzers in wastewater treatment plants. An on-line residual chlorine analyzer must have, am...

  1. Incorporating on-line process data into a diagnostic knowledge-based system

    E-print Network

    Lin, Kai Hsuan

    1994-01-01

    The objective of this research was to develop and implement an on-line gypsum wallboard manufacturing expert system incorporating on-line process monitoring information and statistical process control. In support of this objective, several sub...

  2. 75 FR 57826 - Culturally Significant Objects Imported for Exhibition Determinations: “On Line: Drawing Through...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-22

    ...Objects Imported for Exhibition Determinations: ``On Line: Drawing Through the Twentieth Century'' SUMMARY: Notice is hereby...the objects to be included in the exhibition ``On Line: Drawing Through the Twentieth Century,'' imported from abroad...

  3. Characterization of forest biodiversity in Western Amazon using CAO-VSWIR imaging spectroscopy

    NASA Astrophysics Data System (ADS)

    Féret, J.; Asner, G. P.

    2012-12-01

    Mapping canopy species richness is a key to the study and conservation of biological diversity in tropical forests, but to date, no reliable methods exist for operational biodiversity mapping of tropical regions. Airborne imaging spectroscopy has proven potential for the discrimination of canopy tree species, as a combination of high spectral and spatial resolution allows measurement of subtle spectral variations among individual tree crowns, corresponding to the chemical properties of the leaves in different species. We developed a method to estimate the Shannon diversity index, a popular biodiversity indicator, of a forest canopy from airborne spectral data by building upon the Spectral Variation Hypothesis, which relates biological diversity to spectral variability. We collected and analyzed hyperspectral data acquired by the Carnegie Airborne Observatory (CAO) Airborne Taxonomic Mapping System (AToMS) over the Los Amigos Conservation Concession in the Peruvian Amazon. The data have a spatial resolution of 2.0 m and 217 bands evenly spaced between 380 nm and 2510 nm. The method relies on a k-means clustering of a subset of pixels randomly selected from a site, each cluster serving as a proxy for different species. Each pixel in the image is then assigned to the nearest 'proxy-species', the Shannon index is computed for a given area, i.e. 1 ha, and the process is repeated several times to obtain the average estimated Shannon index. To test our approach, we applied the method to two types of data acquired by CAO AToMS. The first was an artificial gradient of biological diversity generated using pixels corresponding to species identified during a field campaign. This artificial gradient allowed total control on the number of species (ranging from 1 to 36 species per ha), and accurate quantification of the results. The spectral diversity index mapped using our method showed a strong correlation with the actual Shannon diversity index (R^2=0.81). The second dataset was a 2000 ha mapped area covering patches of primary and secondary forests and logging areas, resulting in a large range of Shannon index values. The assessed values on this second dataset also proved correlated with field measurements, and additional field measurements are currently being collected for validation. The method developed here is computationally efficient and reliable when processing large areas. Future directions include applications to watershed and regional scales, which will provide important inputs for tropical forest conservation and management.

  4. Biodiesel production from transesterification of palm oil with methanol over CaO supported on bimodal meso-macroporous silica catalyst.

    PubMed

    Witoon, Thongthai; Bumrungsalee, Sittisut; Vathavanichkul, Peerawut; Palitsakun, Supaphorn; Saisriyoot, Maythee; Faungnawakij, Kajornsak

    2014-03-01

    Calcium oxide-loaded porous materials have shown promise as catalysts in transesterification. However, the slow diffusion of bulky triglycerides through the pores limited the activity of calcium oxide (CaO). In this work, bimodal meso-macroporous silica was used as a support to enhance the accessibility of the CaO dispersed inside the pores. Unimodal porous silica having the identical mesopore diameter was employed for the purpose of comparison. Effects of CaO content and catalyst pellet size on the yield of fatty acid methyl esters (FAME) were investigated. The basic strength was found to increase with increasing the CaO content. The CaO-loaded bimodal porous silica catalyst with the pellet size of 325?m achieved a high %FAME of 94.15 in the first cycle, and retained an excellent %FAME of 88.87 after five consecutive cycles. PMID:24525218

  5. On Line Instruction: An Opportunity to Re-Examine and Re-Invent Pedagogy

    ERIC Educational Resources Information Center

    Rosenthal, Irene

    2011-01-01

    One of the reasons the author agreed to teach a hybrid, on-line course last summer was specifically to either challenge or confirm her negative perceptions about on-line instruction. In order to continue to be an outspoken critic whenever administrators encouraged developing on-line courses for what she assumed were pecuniary considerations, she…

  6. On-Line Algorithms for Market Equilibria Spyros Angelopoulos Atish Das Sarma Avner Magen Anastasios Viglas

    E-print Network

    Magen, Avner

    On-Line Algorithms for Market Equilibria Spyros Angelopoulos #3; Atish Das Sarma #3; Avner Magen in linear markets consisting of divisible goods and agents with money. Speci#12;cally, we consider on-line algorithms for this problem in which goods are considered on-line, and each good is assigned an irrevocable

  7. 76 FR 52731 - On-Line Complaint Form for Service-Related Issues in Air Transportation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-23

    ...form. The on-line complaint form allows the public to electronically...On-Line Aviation Complaint Form. OMB Control Number: To Be...rights requirements. Among other things, the office is responsible...Department using an on-line form. If the information...

  8. a Study of the Interferences with the On-Line Radioiodine Measurement Under Nuclear Accident Conditions

    Microsoft Academic Search

    Tung-Tse Tseng

    1986-01-01

    In this research the interferences with the on -line detection of radioiodines, under nuclear accident conditions, were studied. The special tool employed for this research is the developed on-line radioiodine monitor (the Penn State Radioiodine Monitor), which is capable of detecting low levels of radioiodine on-line in air containing orders of magnitude higher levels of radioactive noble gases. Most of

  9. On the Geographic Distribution of On-line Game Servers and Players

    E-print Network

    . INTRODUCTION With the increasing popularity of on-line PC games over the last several years and the emergenceOn the Geographic Distribution of On-line Game Servers and Players Wu-chang Feng Wu-chi Feng OGI@OHSU {wuchang,wuchi}@cse.ogi.edu ABSTRACT With a shift in the on-line gaming landscape from indi- vidually

  10. On-line Reconstruction of CAD Geometry Klaus Denker, Daniel Hagel, Jakob Raible, Georg Umlauf

    E-print Network

    Hamann, Bernd

    again to enable proper reconstruction. On-line reconstruction of 3d geometry allows one to generate and update a CAD reconstruction on-line during the scanning process with an hand-held laser scanner. Thus and reconstruction during the scanning process. Keywords-on-line reconstruction; hand-held laser scanner; computer

  11. Modeling On-line Handwriting Using Pairwise Relational Rudy Sicard Thierry Artires Eric Petit

    E-print Network

    Paris-Sud XI, Université de

    Modeling On-line Handwriting Using Pairwise Relational Features Rudy Sicard Thierry Artières Eric propose a new modeling strategy for on-line handwriting. It relies on the use of local and relational-of-speech tagging, they are not so well adapted to real-valued signals recognition tasks such as on-line handwriting

  12. Porosity, surface area, and particle size effects of CaO reacting with SO sub 2 at 1100c

    Microsoft Academic Search

    B. K. Gullett; J. A. Blom; R. T. Cunningham

    1988-01-01

    This paper gives results of tests for the reactivity of calcium oxide (CaO) sorbents derived from calcium hydroxide (Ca(OH)â) and calcium carbonate (CaCOâ) to gaseous sulfur dioxide (SOâ) in a nitrogen atmosphere with a nominal 1100 C, entrained flow reactor and a solids residence time of 0.74 s. The research included direct examination of the combined effect of porosity, particle

  13. Measurements of conductivity in liquids. Application to 2CaO Al_{2O3SiO2}

    NASA Astrophysics Data System (ADS)

    Gruener, G.; Dembinski, K.; Bouvier, A.; Loup, J. P.; Odier, P.

    1998-10-01

    This paper describes an experimental set-up designed to measure the conductivity of alumino-silicates melts at different temperatures up to 1650 ^{circ C}. This conductivity cell has allowed to study the conductivity versus temperature of the gehlenite (2CaO Al_{2O3SiO2}) during the solidification and fusion processes. It might be useful to improve the knowledge in glass-forming liquids.

  14. Periodic Hartree-Fock study of B1 &rlhar2; B2 reactions: phase transition in CaO

    Microsoft Academic Search

    Philippe D'Arco; Luc-Henri Jolly; Bernard Silvi

    1992-01-01

    The periodic Hartree-Fock method has been used to sample the potential energy hypersurface of CaO to determine a collective reaction pathway between the low-pressure (NaCl) and high-pressure (CsCl) phases. The predicted transition pressure, 68 GPa, is in good agreement with both experimental data and previous theoretical studies. At low pressure the enthalpy (E + PV) surface presents only one minimum

  15. Electronic conductivities of commercial ZrO 2 + 3 to 4 wt pct CaO electrolytes

    Microsoft Academic Search

    Lawrence M. Friedman; Karl E. Oberg; William M. Boorstein; Robert A. Rapp

    1973-01-01

    Potentiostatic electrochemical experiments with liquid metal electrodes have been analyzed to provide values for the mixed\\u000a electrical conduction parameters (PMion, o?o, Oo , Po,P\\u000a o, and E O,C.) associated with commercial-grade ZrO2 + 3 to 4 wt pct CaO electrolytes. Good agreement between experimental and calculated values for the open-circuit cell voltage,E o. c., for relatively high oxygen concentrations in

  16. CaO insulator and Be intermetallic coatings on V-base alloys for liquid-lithium fusion blanket applications

    Microsoft Academic Search

    J.-H. Park; T. F. Kassner

    1995-01-01

    The objective of this study is to develop (a) stable CaO insulator coatings at the liquid-Li\\/structural-material interface, with emphasis on electrically insulating coatings that prevent adverse MHD-generated currents from passing through the V-alloy wall, and (b) stable Be-V intermetallic coatings for first-wall components that face the plasma. Electrically insulating and corrosion-resistant coatings are required at the liquid-Li\\/structural interface in fusion

  17. Gas-solid carbonation of Ca(OH)2 and CaO particles under non-isothermal and isothermal conditions by using a thermogravimetric analyzer

    E-print Network

    Boyer, Edmond

    1 Gas-solid carbonation of Ca(OH)2 and CaO particles under non-isothermal and isothermal conditions Gas Control 11, 3 (2012) 172-180" DOI : 10.1016/j.ijggc.2012.08.009 #12;2 Abstract The gas-solid, quantify the gas-solid carbonation extent and the carbonation kinetics of Ca(OH)2 and CaO; and secondly

  18. On-line sterilization of cheese whey using ultraviolet radiation.

    PubMed

    Mahmoud, N S; Ghaly, A E

    2004-01-01

    The effectiveness of ultraviolet radiation for on-line sterilization of cheese whey was investigated. The effects of flow rate and residence time on the performance of three UV reactors having different gap sizes (18, 13, and 6 mm) were studied. Six flow rates and six residence times were tested with the three UV reactors. The cheese whey used in this study had a very high turbidity (4317 NTU), very poor transmittance in the UV radiation germicidal range ( approximately 0%), and high percentage of large solid particles ( approximately 20% > 100 microm). Although the cheese whey physical characteristics showed low probability of sterilization using UV radiation, the study showed that UV radiation can be used on-line to sterilize cheese whey if the proper reactor gap size and the appropriate residence time are used. There were combined effects of the flow rate and gap size. The cell removal efficiency increased with increases in residence time and decreases in the UV reactor gap size. Removal efficiency of 100% was not achieved in this study with the first UV reactor (18-mm gap size), whereas 100% removal efficiency was achieved with the second (13-mm gap size) and third (6-mm gap size) UV reactors at residence times of 2.0 and 0.5 h, respectively. The microbial decay rates achieved in this study were 4.94, 7.62, and 20.9 h(-)(1) using the first, second, and third UV reactor, respectively. Residence times of 3.3, 2.1, and 0.8 h would be required to completely destruct a microbial population of 5.95 x 10(6) cells/mL using the first, second, and third UV reactors, respectively. Although cheese whey sterilization using UV radiation seems to be a good alternative to pasteurization, increases in cheese whey temperature resulted in lamp fouling. If online sterilization is to be used, the fouling problem should be investigated and a maintenance scheme for the UV reactor should be developed. PMID:15059002

  19. First-principles simulations of CaO and CaSiO3 liquids: structure, thermodynamics and diffusion

    NASA Astrophysics Data System (ADS)

    Bajgain, Suraj K.; Ghosh, Dipta B.; Karki, Bijaya B.

    2015-01-01

    We have performed first-principles molecular dynamics simulations of CaO and CaSiO3 liquids over broad ranges of pressure (0-150 GPa) and temperature (2,500-8,000 K) within density-functional theory. The simulated liquid structure changes considerably on compression with the mean cation-anion coordination numbers increasing nearly linearly with volume. The Ca-O coordination number increases from 5 (7) near the ambient pressure to 8 (10) at high pressure for CaO (CaSiO3) liquid. The Si-O coordination number increases from 4 to 6 over the same pressure regime. Our results show that both liquids are much more compressible than their solid counterparts implying the possibility of liquid-solid density crossovers at high pressure. The Grüneisen parameter of both the liquids increases with pressure, which is opposite in case of crystalline phases. The calculated self-diffusion coefficients strongly depend on temperature and pressure, thereby requiring non-Arrhenian representation with variable activation volume. The diffusivity differences between the two liquids tend to be large at low-temperature and low-pressure regime. Also, comparisons with MgSiO3 liquid suggest that network modifier cations Ca and Mg behave similarly though Ca is more coordinated and more mobile as compared to Mg.

  20. CaO insulator coatings and self-healing of defects on V-Cr-Ti alloys in liquid lithium

    SciTech Connect

    Park, J.H.; Kassner, T.F.

    1996-02-01

    Electrically insulating and corrosion-resistant coatings are required at the liquid metal/structural interface in fusion first-wall/blanket applications. The electrical resistance of CaO coatings produced on V-5%Cr-5%Ti by exposure of the alloy to liquid Li that contained 0.5--85 wt.% dissolved Ca was measured as a function of time at temperatures between 250 and 600{degrees}C. The solute element, Ca in liquid Li, reacted with the alloy substrate at 400--420{degrees}C to produce a CaO coating. Resistance of the coating layer measured in-situ in liquid Li was {approx}10{sup 6} {Omega} at 400{degrees}C. Thermal cycling between 300 and 700{degrees}C changed the coating layer resistance. which followed insulator behavior. These results suggest that thin homogeneous coatings can be produced on variously shaped surfaces by controlling the exposure time, temperature, and composition of the liquid metal. The technique can be applied to various shapes(e.g., inside/outside of tubes, complex geometrical shapes) because the coating is formed by liquid-phase reaction. Examination of the specimens after cooling to room temperature revealed no spallation, but homogeneous crazing cracks were present in the CaO coating. Additional tests to investigate the in-situ self-healing behavior of the cracks indicated that rapid healing occurred at {ge}360{degrees}C.

  1. Individuality and Stability in Male Songs of Cao Vit Gibbons (Nomascus nasutus) with Potential to Monitor Population Dynamics

    PubMed Central

    Ma, Chang-Yong; Fei, Han-Lan; Fan, Peng-Fei

    2014-01-01

    Vocal individuality and stability has been used to conduct population surveys, monitor population dynamics, and detect dispersal patterns in avian studies. To our knowledge, it has never been used in these kinds of studies among primates. The cao vit gibbon is a critically endangered species with only one small population living in a karst forest along China-Vietnam border. Due to the difficult karst terrain, an international border, long life history, and similarity in male morphology, detailed monitoring of population dynamics and dispersal patterns are not possible using traditional observation methods. In this paper, we test individuality and stability in male songs of cao vit gibbons. We then discuss the possibility of using vocal individuality for population surveys and monitoring population dynamics and dispersal patterns. Significant individuality of vocalization was detected in all 9 males, and the correct rate of individual identification yielded by discriminant function analysis using a subset of variables was satisfactory (>90%). Vocal stability over 2–6 years was also documented in 4 males. Several characters of cao vit gibbons allowed long-term population monitoring using vocal recordings in both China and Vietnam: 1) regular loud calls, 2) strong individuality and stability in male songs, 3) stable territories, and 4) long male tenure. During the course of this research, we also observed one male replacement (confirmed by vocal analysis). This time- and labor-saving method might be the most effective way to detect dispersal patterns in this transboundary population. PMID:24788306

  2. UCSF Class/Course SchedulingUCSF Class/Course Scheduling On-Line Resources forOn-Line Resources for

    E-print Network

    Klein, Ophir

    UCSF Class/Course SchedulingUCSF Class/Course Scheduling On-Line Resources forOn-Line ResourcesUCSF Class/Course Scheduling 1. From the Nursing Student Resources web page (http://nursing.ucsf.edu/student-resources

  3. The effect of family therapy on the changes in the severity of on-line game play and brain activity in adolescents with on-line game addiction.

    PubMed

    Han, Doug Hyun; Kim, Sun Mi; Lee, Young Sik; Renshaw, Perry F

    2012-05-31

    We evaluated whether a brief 3-week family therapy intervention would change patterns of brain activation in response to affection and gaming cues in adolescents from dysfunctional families who met criteria for on-line game addiction. Fifteen adolescents with on-line game addiction and fifteen adolescents without problematic on-line game play and an intact family structure were recruited. Over 3 weeks, families were asked to carry out homework assignments focused on increasing family cohesion for more than 1 hour/day and 4 days/week. Before therapy, adolescents with on-line game addiction demonstrated decreased activity as measured by functional magnetic resonance imaging (fMRI) within the caudate, middle temporal gyrus, and occipital lobe in response to images depicting parental affection and increased activity of the middle frontal and inferior parietal in response scenes from on-line games, relative to healthy comparison subjects. Improvement in perceived family cohesion following 3 weeks of treatment was associated with an increase in the activity of the caudate nucleus in response to affection stimuli and was inversely correlated with changes in on-line game playing time. With evidence of brain activation changes in response to on-line game playing cues and images depicting parental love, the present findings suggest that family cohesion may be an important factor in the treatment of problematic on-line game playing. PMID:22698763

  4. Intermitência alfvênica gerada por caos na atmosfera solar e no vento solar

    NASA Astrophysics Data System (ADS)

    Rempel, E. L.; Chian, A. C.-L.; Macau, E. E. N.; Rosa, R. R.

    2003-08-01

    Dados medidos no vento solar rápido proveniente dos buracos coronais revelam que os plasmas no meio interplanetário são dominados por flutuações Alfvênicas, caracterizadas por uma alta correlação entre as variações do campo magnético e da velocidade do plasma. As flutuações exibem muitas características esperadas em turbulência magneto-hidrodinâmica totalmente desenvolvida, tais como intermitência e espectros contínuos. Contudo, os mecanismos responsáveis pela evolução de turbulência Alfvênica intermitente não são completamente compreendidos. Neste trabalho a teoria de caos é usada para explicar como sistemas Alfvênicos, modelados pela equação Schrödinger não-linear derivativa e pela equação Kuramoto-Sivashinsky, podem se tornar fortemente caóticos à medida em que parâmetros do plasma são variados. Pequenas perturbações no parâmetro de dissipação podem fazer com que o sistema mude bruscamente de um regime periódico, ou fracamente caótico, para um regime fortemente caótico. As séries temporais das flutuações do campo magnético nos regimes fortemente caóticos exibem comportamento intermitente, em que fases laminares ou fracamente caóticas são interrompidas por fortes estouros caóticos. É mostrado que o regime fortemente caótico é atingido quando as soluções periódicas ou fracamente caóticas globalmente estáveis interagem com soluções do sistema que são fortemente caóticas, mas globalmente instáveis. Estas soluções globalmente instáveis são conjuntos caóticos não-atrativos conhecidos como selas caóticas, e são responsáveis pelos fortes estouros nos regimes intermitentes. Selas caóticas têm sido detectadas experimentalmente em uma grande variedade de sistemas, sendo provável que elas desempenhem um papel importante na turbulência intermitente observada em plasmas espaciais.

  5. Heavy doping of H - ion in 12CaO·7Al 2O 3

    NASA Astrophysics Data System (ADS)

    Hayashi, Katsuro

    2011-06-01

    12CaO·7Al 2O 3 (C12A7, mayenite), which has a nanoscale porous structure that can accommodate extraframework species such as hydride (H -), oxide (O 2-), hydroxide (OH -) ions, and electrons, has been doped with H - ions to investigate its effects as dominant extraframework species. Chemical doping with CaH 2 enables the concentration of H - ions to reach almost the theoretical maximum. The concentration of H - ions is characterized by optical absorption intensity ascribed to photoionization of H - ions, and 1H magic angle spinning nuclear magnetic resonance (MAS-NMR) spectroscopy. Persistent electron generation, which is accompanied by the formation of an F+ absorption band and electrical conductivity, by irradiation with ultraviolet light at room temperature increases as the H - ion doping increases until it reaches half the theoretical maximum and then decreases as the H - ion concentration increases further. This dependence indicates that both H - and O 2- ions are necessary for the generation of persistent electrons.

  6. Micelle-Assisted Synthesis of Al2O3·CaO Nanocatalyst: Optical Properties and Their Applications in Photodegradation of 2,4,6-Trinitrophenol

    PubMed Central

    Imtiaz, Ayesha; Khaleeq-ur-rahman, Muhammad; Adnan, Rohana

    2013-01-01

    Calcium oxide (CaO) nanoparticles are known to exhibit unique property due to their high adsorption capacity and good catalytic activity. In this work the CaO nanocatalysts were prepared by hydrothermal method using anionic surfactant, sodium dodecyl sulphate (SDS), as a templating agent. The as-synthesized nanocatalysts were further used as substrate for the synthesis of alumina doped calcium oxide (Al2O3·CaO) nanocatalysts via deposition-precipitation method at the isoelectric point of CaO. The Al2O3·CaO nanocatalysts were characterized by FTIR, XRD, TGA, TEM, and FESEM techniques. The catalytic efficiencies of these nanocatalysts were studied for the photodegradation of 2,4,6-trinitrophenol (2,4,6-TNP), which is an industrial pollutant, spectrophotometrically. The effect of surfactant and temperature on size of nanocatalysts was also studied. The smallest particle size and highest percentage of degradation were observed at critical micelle concentration of the surfactant. The direct optical band gap of the Al2O3·CaO nanocatalyst was found as 3.3?eV. PMID:24311980

  7. Characterization of 12CaO x 7Al2O3 doped indium tin oxide films for transparent cathode in top-emission organic light-emitting diodes.

    PubMed

    Jung, Chul Ho; Hwang, In Rok; Park, Bae Ho; Yoon, Dae Ho

    2013-11-01

    12CaO x 7Al2O3, insulator (C12A7) doped indium tin oxide (ITO) (ITO:C12A7) films were fabricated using a radio frequency magnetron co-sputtering system with ITO and C12A7 targets. The qualitative and quantitative properties of ITO:C12A7 films, as a function of C12A7 concentration, were examined via X-ray photoemission spectroscopy and synchrotron X-ray scattering as well as by conducting atomic force microscopy. The work function of ITO:C12A7 (1.3%) films of approximately 2.8 eV obtained by high resolution photoemission spectroscopy measurements make them a reasonable cathode for top-emission organic light-emitting diodes. PMID:24245291

  8. On-line phase measuring profilometry for a rotating object

    NASA Astrophysics Data System (ADS)

    Wang, Peng; Cao, Yiping; Yang, Xin; Peng, Kuang

    2014-11-01

    On-line phase measuring profilometry (OPMP) for a rotating object is proposed. N frames of circular sinusoidal grating patterns are designed in advance, in which the transmittance along the radial direction is sinusoidal and there is a fixed shifting phase pitch of 2?/N between every adjacent two grating patterns along the radial direction. While the measured object is rotating, the designed grating patterns are projected onto the rotating object by digital light processing and the corresponding deformed patterns caused by the object at different positions are captured by a charge coupled device camera. By pixel matching and rotation transformation with special marks, N frames of the deformed patterns of the object at the same position can be extracted. Hence, the rotating object can be reconstructed by the extracted deformed patterns. The results of computer emulation and experiment show the feasibility and validity of the proposed OPMP. Either the maximum measurement absolute error is 0.118 mm or the maximum root mean square error is 0.077 mm in the measured region of 0 to 25 mm.

  9. On-line optimization of large dynamic systems

    SciTech Connect

    Marques, D.

    1985-01-01

    This thesis proposes an algorithm for the on-line optimization of large-scale nonlinear dynamic systems. It combines the concepts of moving time horizon, augmented state estimation, and discrete modeling, thus allowing formulation of the problem as a mathematical programming problem. The moving time horizon reduces the effect of disturbances and model inaccuracy, and the augmented state estimator is used (in conjunction with the moving time horizon) in order to obtain a good approximation of the system state (at the time the computation of the control path is performed) and to account for nonstationary disturbances. Discretizing time allows the use of already developed and well tested optimization algorithms and the possibility of changing the problem (the objective function, the model and/or the constraints) with relative ease. The algorithm's effectiveness was tested by using it to improve the operation of a commercially important system. The operation of these systems - pipeline networks for natural gas transmission - is a challenge for any control algorithm because pipeline networks have large dimensions, the gas flow is modeled by nonlinear hyperbolic partial differential equations, and the operation is subject to constraints on the manipulated, state, and output variables. The successful application of the proposed algorithm to pipeline networks of significant dimension exhibits its strength.

  10. The New On-Line Photoionization Spectrometer at FLASH

    NASA Astrophysics Data System (ADS)

    Juranic, Pavle; Martins, Michael; Jahn, Lorenz; Bonfigt, Susanne; Klummp, Stephan; Viefhaus, Jens; Tiedtke, Kai

    2009-05-01

    Due to the stochastic nature of the SASE process and the resulting pulse-to-pulse fluctuations of the Free-electron Laser (FEL) photons, the experimenters require the knowledge of the properties of the beam they're working with. In particular, the experimenter who is investigating narrow atomic or molecular resonances, phase transitions, or any other kind of effect heavily dependent on the photon energy of an FEL would need to know the precise photon energy of each individual photon bunch. Real-time photon energy measurement could also be used by the operators of the FEL machine to tune the beam. Also, whatever spectrometer used must not interfere with the beam so significantly to cause the experiment to receive substantially less light, degrading the quality the beam's wavefront, coherence, pulse length, and other properties. The group at the Free Electron Laser in Hamburg (FLASH) has developed an on-line photoionization spectrometer that uses electron and ion time of flight (TOF) spectrometers and gases as a way to measure the photon pulse energy. By measuring the out-of-focus-beam electron kinetic energy spectra, and by looking at the relative ion signal photoionization ratios of already known noble gases, one can determine the photon energy of the FEL beam.

  11. On-Line Monitoring Of The Diamond Turned Surfaces

    NASA Astrophysics Data System (ADS)

    Wang, Haiming

    1988-08-01

    The vibration of the spindle system of the diamond turning lathe has a great influence on the geometry of workpieces. The low frequency vibration will distort form of the workpieces, and the high frequency vibration will damage finish of them. The author has developed a optical method for testing form and roughness of optical surfaces simultans., eously. By using this method, the form and the roughness of the diamond turned surfaces is tested, the readings are sent to microcomputer, the relation between the frequency characters of the spindle system vibration and the power spectrum of the form and roughness of the diamond turned surfaces are set up by FFT analysis. This is a simple, high speed, automated, and non-destructive testing technique, and workpieces needn't removing from the lathe. So that it is easy to realize on-line monitoring of the diamond turned surfaces by means of this technique. Furthermore it is possible to diagnose the diamond turning lathe by using this method.

  12. On-line milk spectrometry: analysis of bovine milk composition

    NASA Astrophysics Data System (ADS)

    Spitzer, Kyle; Kuennemeyer, Rainer; Woolford, Murray; Claycomb, Rod

    2005-04-01

    We present partial least squares (PLS) regressions to predict the composition of raw, unhomogenised milk using visible to near infrared spectroscopy. A total of 370 milk samples from individual quarters were collected and analysed on-line by two low cost spectrometers in the wavelength ranges 380-1100 nm and 900-1700 nm. Samples were collected from 22 Friesian, 17 Jersey, 2 Ayrshire and 3 Friesian-Jersey crossbred cows over a period of 7 consecutive days. Transmission spectra were recorded in an inline flowcell through a 0.5 mm thick milk sample. PLS models, where wavelength selection was performed using iterative PLS, were developed for fat, protein, lactose, and somatic cell content. The root mean square error of prediction (and correlation coefficient) for the nir and visible spectrometers respectively were 0.70%(0.93) and 0.91%(0.91) for fat, 0.65%(0.5) and 0.47%(0.79) for protein, 0.36%(0.49) and 0.45%(0.43) for lactose, and 0.50(0.54) and 0.48(0.51) for log10 somatic cells.

  13. On-Line Loss of Control Detection Using Wavelets

    NASA Technical Reports Server (NTRS)

    Brenner, Martin J. (Technical Monitor); Thompson, Peter M.; Klyde, David H.; Bachelder, Edward N.; Rosenthal, Theodore J.

    2005-01-01

    Wavelet transforms are used for on-line detection of aircraft loss of control. Wavelet transforms are compared with Fourier transform methods and shown to more rapidly detect changes in the vehicle dynamics. This faster response is due to a time window that decreases in length as the frequency increases. New wavelets are defined that further decrease the detection time by skewing the shape of the envelope. The wavelets are used for power spectrum and transfer function estimation. Smoothing is used to tradeoff the variance of the estimate with detection time. Wavelets are also used as front-end to the eigensystem reconstruction algorithm. Stability metrics are estimated from the frequency response and models, and it is these metrics that are used for loss of control detection. A Matlab toolbox was developed for post-processing simulation and flight data using the wavelet analysis methods. A subset of these methods was implemented in real time and named the Loss of Control Analysis Tool Set or LOCATS. A manual control experiment was conducted using a hardware-in-the-loop simulator for a large transport aircraft, in which the real time performance of LOCATS was demonstrated. The next step is to use these wavelet analysis tools for flight test support.

  14. On-line monitoring of methane in sewer air

    NASA Astrophysics Data System (ADS)

    Liu, Yiwen; Sharma, Keshab R.; Murthy, Sudhir; Johnson, Ian; Evans, Ted; Yuan, Zhiguo

    2014-10-01

    Methane is a highly potent greenhouse gas and contributes significantly to climate change. Recent studies have shown significant methane production in sewers. The studies conducted so far have relied on manual sampling followed by off-line laboratory-based chromatography analysis. These methods are labor-intensive when measuring methane emissions from a large number of sewers, and do not capture the dynamic variations in methane production. In this study, we investigated the suitability of infrared spectroscopy-based on-line methane sensors for measuring methane in humid and condensing sewer air. Two such sensors were comprehensively tested in the laboratory. Both sensors displayed high linearity (R2 > 0.999), with a detection limit of 0.023% and 0.110% by volume, respectively. Both sensors were robust against ambient temperature variations in the range of 5 to 35°C. While one sensor was robust against humidity variations, the other was found to be significantly affected by humidity. However, the problem was solved by equipping the sensor with a heating unit to increase the sensor surface temperature to 35°C. Field studies at three sites confirmed the performance and accuracy of the sensors when applied to actual sewer conditions, and revealed substantial and highly dynamic methane concentrations in sewer air.

  15. On-line monitoring of methane in sewer air.

    PubMed

    Liu, Yiwen; Sharma, Keshab R; Murthy, Sudhir; Johnson, Ian; Evans, Ted; Yuan, Zhiguo

    2014-01-01

    Methane is a highly potent greenhouse gas and contributes significantly to climate change. Recent studies have shown significant methane production in sewers. The studies conducted so far have relied on manual sampling followed by off-line laboratory-based chromatography analysis. These methods are labor-intensive when measuring methane emissions from a large number of sewers, and do not capture the dynamic variations in methane production. In this study, we investigated the suitability of infrared spectroscopy-based on-line methane sensors for measuring methane in humid and condensing sewer air. Two such sensors were comprehensively tested in the laboratory. Both sensors displayed high linearity (R(2) > 0.999), with a detection limit of 0.023% and 0.110% by volume, respectively. Both sensors were robust against ambient temperature variations in the range of 5 to 35°C. While one sensor was robust against humidity variations, the other was found to be significantly affected by humidity. However, the problem was solved by equipping the sensor with a heating unit to increase the sensor surface temperature to 35°C. Field studies at three sites confirmed the performance and accuracy of the sensors when applied to actual sewer conditions, and revealed substantial and highly dynamic methane concentrations in sewer air. PMID:25319343

  16. On-line DNA analysis system with rapid thermal cycling

    DOEpatents

    Swerdlow, Harold P. (Salt Lake City, UT); Wittwer, Carl T. (Salt Lake City, UT)

    1999-01-01

    An apparatus particularly suited for subjecting biological samples to any necessary sample preparation tasks, subjecting the sample to rapid thermal cycling, and then subjecting the sample to subsequent on-line analysis using one or more of a number of analytical techniques. The apparatus includes a chromatography device including an injection means, a chromatography pump, and a chromatography column. In addition, the apparatus also contains a capillary electrophoresis device consisting of a capillary electrophoresis column with an inlet and outlet end, a means of injection, and means of applying a high voltage to cause the differential migration of species of interest through the capillary column. Effluent from the liquid chromatography column passes over the inlet end of the capillary electrophoresis column through a tee structure and when the loading of the capillary electrophoresis column is desired, a voltage supply is activated at a precise voltage and polarity over a specific duration to cause sample species to be diverted from the flowing stream to the capillary electrophoresis column. A laser induced fluorescence detector preferably is used to analyze the products separated while in the electrophoresis column.

  17. On-line DNA analysis system with rapid thermal cycling

    DOEpatents

    Swerdlow, H.P.; Wittwer, C.T.

    1999-08-10

    This application describes an apparatus particularly suited for subjecting biological samples to any necessary sample preparation tasks, subjecting the sample to rapid thermal cycling, and then subjecting the sample to subsequent on-line analysis using one or more of a number of analytical techniques. The apparatus includes a chromatography device including an injection means, a chromatography pump, and a chromatography column. In addition, the apparatus also contains a capillary electrophoresis device consisting of a capillary electrophoresis column with an inlet and outlet end, a means of injection, and means of applying a high voltage to cause the differential migration of species of interest through the capillary column. Effluent from the liquid chromatography column passes over the inlet end of the capillary electrophoresis column through a tee structure and when the loading of the capillary electrophoresis column is desired, a voltage supply is activated at a precise voltage and polarity over a specific duration to cause sample species to be diverted from the flowing stream to the capillary electrophoresis column. A laser induced fluorescence detector preferably is used to analyze the products separated while in the electrophoresis column. 6 figs.

  18. On-line monitoring of methane in sewer air

    PubMed Central

    Liu, Yiwen; Sharma, Keshab R.; Murthy, Sudhir; Johnson, Ian; Evans, Ted; Yuan, Zhiguo

    2014-01-01

    Methane is a highly potent greenhouse gas and contributes significantly to climate change. Recent studies have shown significant methane production in sewers. The studies conducted so far have relied on manual sampling followed by off-line laboratory-based chromatography analysis. These methods are labor-intensive when measuring methane emissions from a large number of sewers, and do not capture the dynamic variations in methane production. In this study, we investigated the suitability of infrared spectroscopy-based on-line methane sensors for measuring methane in humid and condensing sewer air. Two such sensors were comprehensively tested in the laboratory. Both sensors displayed high linearity (R2 > 0.999), with a detection limit of 0.023% and 0.110% by volume, respectively. Both sensors were robust against ambient temperature variations in the range of 5 to 35°C. While one sensor was robust against humidity variations, the other was found to be significantly affected by humidity. However, the problem was solved by equipping the sensor with a heating unit to increase the sensor surface temperature to 35°C. Field studies at three sites confirmed the performance and accuracy of the sensors when applied to actual sewer conditions, and revealed substantial and highly dynamic methane concentrations in sewer air. PMID:25319343

  19. 3081/E processor and its on-line use

    SciTech Connect

    Rankin, P.; Bricaud, B.; Gravina, M.; Kunz, P.F.; Oxoby, G.; Trang, Q.; Ferran, P.M.; Fucci, A.; Hinton, R.; Jacobs, D.

    1985-05-01

    The 3081/E is a second generation emulator of a mainframe IBM. One of it's applications will be to form part of the data acquisition system of the upgraded Mark II detector for data taking at the SLAC linear collider. Since the processor does not have direct connections to I/O devices a FASTBUS interface will be provided to allow communication with both SLAC Scanner Processors (which are responsible for the accumulation of data at a crate level) and the experiment's VAX 8600 mainframe. The 3081/E's will supply a significant amount of on-line computing power to the experiment (a single 3081/E is equivalent to 4 to 5 VAX 11/780's). A major advantage of the 3081/E is that program development can be done on an IBM mainframe (such as the one used for off-line analysis) which gives the programmer access to a full range of debugging tools. The processor's performance can be continually monitored by comparison of the results obtained using it to those given when the same program is run on an IBM computer. 9 refs.

  20. On-line preconcentration methods for capillary electrophoresis

    PubMed Central

    Osbourn, Damon M.; Weiss, David J.; Lunte, Craig E.

    2008-01-01

    The limits of detection (LOD) for capillary electrophoresis (CE) are constrained by the dimensions of the capillary. For example, the small volume of the capillary limits the total volume of sample that can be injected into the capillary. In addition, the reduced pathlength hinders common optical detection methods such as UV detection. Many different techniques have been developed to improve the LOD for CE. In general these techniques are designed to compress analyte bands within the capillary, thereby increasing the volume of sample that can be injected without loss of CE efficiency. This on-line sample preconcentration, generally referred to as stacking, is based on either the manipulation of differences in the electrophoretic mobility of analytes at the boundary of two buffers with differing resistivities or the partitioning of analytes into a stationary or pseudostationary phase. This article will discuss a number of different techniques, including field-amplified sample stacking, large-volume sample stacking, pH-mediated sample stacking, on-column isotachophoresis, chromatographic preconcentration, sample stacking for micellar electrokinetic chromatography, and sweeping. PMID:11001283

  1. Self-checking on-line testable static RAM

    NASA Technical Reports Server (NTRS)

    Chau, Savio N. (inventor); Rennels, David A. (inventor)

    1993-01-01

    This is a fault-tolerant random access memory for use in fault-tolerant computers. It comprises a plurality of memory chips each comprising a plurality of on-line testable and correctable memory cells disposed in rows and columns for holding individually addressable binary bits and provision for error detection incorporated into each memory cell for outputting an error signal whenever a transient error occurs therein. In one embodiment, each of the memory cells comprises a pair of static memory sub-cells for simultaneously receiving and holding a common binary data bit written to the memory cell and the error detection provision comprises comparator logic for continuously sensing and comparing the contents of the memory sub-cells to one another and for outputting the error signal whenever the contents do not match. In another embodiment, each of the memory cells comprises a static memory sub-cell and a dynamic memory sub-cell for simultaneously receiving and holding a common binary data bit written to the memory cell and the error detection provision comprises comparator logic for continuously sensing and comparing the contents of the static memory sub-cell to the dynamic memory sub-cell and for outputting the error signal whenever the contents do not match. Capability for correction of errors is also included.

  2. EnviroNET: On-line information for LDEF

    NASA Technical Reports Server (NTRS)

    Lauriente, Michael

    1993-01-01

    EnviroNET is an on-line, free-form database intended to provide a centralized repository for a wide range of technical information on environmentally induced interactions of use to Space Shuttle customers and spacecraft designers. It provides a user-friendly, menu-driven format on networks that are connected globally and is available twenty-four hours a day - every day. The information, updated regularly, includes expository text, tabular numerical data, charts and graphs, and models. The system pools space data collected over the years by NASA, USAF, other government research facilities, industry, universities, and the European Space Agency. The models accept parameter input from the user, then calculate and display the derived values corresponding to that input. In addition to the archive, interactive graphics programs are also available on space debris, the neutral atmosphere, radiation, magnetic fields, and the ionosphere. A user-friendly, informative interface is standard for all the models and includes a pop-up help window with information on inputs, outputs, and caveats. The system will eventually simplify mission analysis with analytical tools and deliver solutions for computationally intense graphical applications to do 'What if...' scenarios. A proposed plan for developing a repository of information from the Long Duration Exposure Facility (LDEF) for a user group is presented.

  3. Virtual laboratories: Collaborative environments and facilities-on-line

    SciTech Connect

    Thomas, C.E. Jr. [Oak Ridge National Lab., TN (United States). I and C Div.; Cavallini, J.S.; Seweryniak, G.R.; Kitchens, T.A.; Hitchcock, D.A.; Scott, M.A.; Welch, L.C. [Dept. of Energy, Germantown, MD (United States). Mathematical Information, and Computational Sciences Div.; Aiken, R.J. [Dept. of Energy, Germantown, MD (United States). Mathematical Information, and Computational Sciences Div.]|[Lawrence Livermore National Lab., CA (United States); Stevens, R.L. [Argonne National Lab., IL (United States). Mathematics and Computer Sciences Div.

    1995-07-01

    The Department of Energy (DOE) has major research laboratories in a number of locations in the US, typically co-located with large research instruments or research facilities valued at tens of millions to even billions of dollars. Present budget exigencies facing the entire nation are felt very deeply at DOE, just as elsewhere. Advances over the last few years in networking and computing technologies make virtual collaborative environments and conduct of experiments over the internetwork structure a possibility. The authors believe that development of these collaborative environments and facilities-on-line could lead to a ``virtual laboratory`` with tremendous potential for decreasing the costs of research and increasing the productivity of their capital investment in research facilities. The majority of these cost savings would be due to increased productivity of their research efforts, better utilization of resources and facilities, and avoiding duplication of expensive facilities. A vision of how this might all fit together and a discussion of the infrastructure necessary to enable these developments is presented.

  4. On-Line Resources for Teaching Geoscience with Visualization

    NASA Astrophysics Data System (ADS)

    Hall, M.; Manduca, C. A.; Mogk, D. W.; Slotta, J.; Tversky, B.; Crabaugh, J.

    2004-12-01

    Understanding the Earth, its processes, and its evolution through time lies at the heart of geoscience. Geoscientists rely heavily on visualizations of changes in the earth in time and space to develop their understanding of Earth systems and processes. Thus visualizations that help researchers and students develop and use their own mental images are an important aspect of geoscience education. In winter 2004, a NAGT "On the Cutting Edge" workshop addressed the question "How do we teach geoscience with visualizations effectively?" The workshop convened geoscientists who are leaders in using visualizations in their teaching, learning scientists who study how we perceive and learn from visualizations, and creators of visualizations and visualization tools. Workshop participants brought expertise in understanding the cognitive processes of learning with visualizations, the classroom experience of teaching geoscience with visualizations, and the knowledge drawn from creating visualizations to convey conceptual ideas and display data. Based on this confluence of expertise, a set of design principles for effective visualizations was created. Participants recommended research directions on how geoscientists use visualizations in their thinking, on student perceptions of standard visualizations, and on the relationships between visualizations and student learning in the geosciences. A particularly interesting line of discussion was the use of student drawing in teaching. A large number of on-line resources to assist faculty in creating and using visualizations resulted from the workshop http://serc.carleton.edu/NAGTWorkshops/visualize04/index.html.. These include 1) a collection of visualizations for teaching organized by topic; 2) design principles for creating effective visualizations; 3) information on tools for creating visualizations; 4) essays, references and websites describing research on learning with visualizations; 5) summaries of workshop discussions.

  5. Worldwide On-line Distance Learning University Astronomy

    NASA Astrophysics Data System (ADS)

    Eyres, S. P. S.; Hassall, B. J. M.; Butchart, I.; Bromage, G. E.

    2006-08-01

    The University of Central Lancashire operates a suite of distance learning courses in Astronomy, available both on-line and via CD-ROM. The courses are available worldwide, and emphasise flexibility of study. To this end students can study anything from a single module (1/6^th of a full year at degree level) all the way up to an entire degree entirely by distance learning. Study rates vary from one to four modules each year, and students can move on to Level 2 modules (equivalent to second year level in a UK degree) before completing the full set of Level 1 modules. Over 1000 awards have been made to date. The core syllabus is Astronomy and Cosmology at Level 1, alongside skills in literature research, using computers, and basic observing. We also offer a basic history of European astronomy. At Level 2 we look at the astrophysics of the Sun, the stars, and galaxies including the Milky Way. By Level 3 students are expected to engage in a large individual project, and a collaborative investigation with other students, alongside high-level courses in cosmology, relativity, extreme states of matter and the origins of the elements, life and astronomical objects. While many students are retired people looking to exercise their brains, keen amateur amateurs or professionals with disposable incomes, and significant fraction are teachers seeking to improve their subject knowledge or high school students gaining an edge in the UK University entrance competition. Via our involvement with SALT we offer our courses to members of previously disadvantaged communities. This leads to an incredibly diverse and lively student body.

  6. On-line Automated Performance Diagnosis on Thousands of Processes

    SciTech Connect

    Roth, Philip C [ORNL

    2006-01-01

    Performance analysis tools are critical for the effective use of large parallel computing resources, but existing tools have failed to address three problems that limit their scalability: (1) management and processing of the volume of performance data generated when monitoring a large number of application processes, (2) communication between a large number of tool components, and (3) presentation of performance data and analysis results for applications with a large number of processes. In this paper, we present a novel approach for finding performance problems in applications with a large number of processes that leverages our multicast and data aggregation infrastructure to address these three performance tool scalability barriers.First, we show how to design a scalable, distributed performance diagnosis facility. We demonstrate this design with an on-line, automated strategy for finding performance bottlenecks. Our strategy uses distributed, independent bottleneck search agents located in the tool agent processes that monitor running application processes. Second, we present a technique for constructing compact displays of the results of our bottleneck detection strategy. This technique, called the Sub-Graph Folding Algorithm, presents bottleneck search results using dynamic graphs that record the refinement of a bottleneck search. The complexity of the results graph is controlled by combining sub-graphs showing similar local application behavior into a composite sub-graph.Using an approach that combines these two synergistic parts, we performed bottleneck searches on programs with up to 1024 processes with no sign of tool resource saturation. With 1024 application processes, our visualization technique reduced a search results graph containing over 30,000 nodes to a single composite 44-node graph sub-graph showing the same qualitative performance information as the original graph.

  7. On-line fermentation monitoring by mid-infrared spectroscopy.

    PubMed

    Mazarevica, Gunta; Diewok, Josef; Baena, Josefa R; Rosenberg, Erwin; Lendl, Bernhard

    2004-07-01

    A new method for on-line monitoring of fermentations using mid-infrared (MIR) spectroscopy has been developed. The method has been used to predict the concentrations of glucose and ethanol during a baker's yeast fermentations. A completely automated flow system was employed as an interface between the bioprocess under study and the Fourier transform infrared (FT-IR) spectrometer, which was equipped with a flow cell housing a diamond attenuated total reflection (ATR) element. By using the automated flow system, experimental problems related to adherence of CO(2) bubbles to the ATR surface, as well as formation of biofilms on the ATR surface, could be efficiently eliminated. Gas bubbles were removed during sampling, and by using rinsing steps any biofilm could be removed from the ATR surface. In this way, constant measuring conditions could be guaranteed throughout prolonged fermentation times (approximately 8 h). As a reference method, high-performance liquid chromatography (HPLC) with refractive index detection was used. The recorded data from different fermentations were modeled by partial least-squares (PLS) regression comparing two different strategies for the calibration. On the one hand, calibration sets were constructed from spectra recorded from either synthetic standards or from samples drawn during fermentation. On the other hand, spectra from fermentation samples and synthetic standards were combined to form a calibration set. Differences in the kinetics of the studied fermentation processes used for calibration and prediction, as well as the precision of the HPLC reference method, were identified as the main chemometric sources of error. The optimal PLS regression method was obtained using the mixed calibration set of samples from fermentations and synthetic standards. The root mean square errors of prediction in this case were 0.267 and 0.336 g/L for glucose and ethanol concentration, respectively. PMID:15282045

  8. The Eclipsing Binary On-Line Atlas (EBOLA)

    NASA Astrophysics Data System (ADS)

    Bradstreet, D. H.; Steelman, D. P.; Sanders, S. J.; Hargis, J. R.

    2004-05-01

    In conjunction with the upcoming release of \\it Binary Maker 3.0, an extensive on-line database of eclipsing binaries is being made available. The purposes of the atlas are: \\begin {enumerate} Allow quick and easy access to information on published eclipsing binaries. Amass a consistent database of light and radial velocity curve solutions to aid in solving new systems. Provide invaluable querying capabilities on all of the parameters of the systems so that informative research can be quickly accomplished on a multitude of published results. Aid observers in establishing new observing programs based upon stars needing new light and/or radial velocity curves. Encourage workers to submit their published results so that others may have easy access to their work. Provide a vast but easily accessible storehouse of information on eclipsing binaries to accelerate the process of understanding analysis techniques and current work in the field. \\end {enumerate} The database will eventually consist of all published eclipsing binaries with light curve solutions. The following information and data will be supplied whenever available for each binary: original light curves in all bandpasses, original radial velocity observations, light curve parameters, RA and Dec, V-magnitudes, spectral types, color indices, periods, binary type, 3D representation of the system near quadrature, plots of the original light curves and synthetic models, plots of the radial velocity observations with theoretical models, and \\it Binary Maker 3.0 data files (parameter, light curve, radial velocity). The pertinent references for each star are also given with hyperlinks directly to the papers via the NASA Abstract website for downloading, if available. In addition the Atlas has extensive searching options so that workers can specifically search for binaries with specific characteristics. The website has more than 150 systems already uploaded. The URL for the site is http://ebola.eastern.edu/.

  9. Overcoming the polarization catastrophe in the rocksalt oxides MgO and CaO

    NASA Astrophysics Data System (ADS)

    Gaddy, Benjamin E.; Paisley, Elizabeth A.; Maria, Jon-Paul; Irving, Douglas L.

    2014-09-01

    Interfaces between dissimilar polar materials may provide a pathway to new device functionality, including high carrier mobility layers at the interface. The development of these materials has proven challenging, in part because of the high energy cost of forming polar surfaces. Our density functional theory calculations explore the mechanisms by which a real material satisfies the electrostatic criteria for stability imposed by a polar surface. The consequences of polarity are studied by comparing the formation energies, charge distribution, and electronic structure of a number of low-index surfaces of rocksalt MgO and CaO. These surfaces are explored both in their bare, undecorated form as well as with surface reconstructions and adsorbed foreign species. Our ground-state surface energies are extended to relevant environmental conditions by use of ab initio thermodynamics. We find that the high energy of bare polar surfaces is the result of the significant charge redistribution that arises to compensate the polarity and pushes electronic states into the forbidden band gap. Other mechanisms of polarity compensation (reconstruction or foreign species adsorption) are therefore seen more frequently. We explain the experimental observations of surface roughness during growth in the [111] direction. In typical epitaxial growth conditions, there is preferential formation of an octopolar reconstruction of the {111} surface, which exposes {001}-type nanofacets. The low energy of the {001} surface likely causes these facets to grow, leading to a rough surface morphology. Our results indicate that when water vapor is present during growth, a smooth, polar surface can be stabilized by the formation of a hydroxyl layer.

  10. On-line Geoscience Data Resources for Today's Undergraduates

    NASA Astrophysics Data System (ADS)

    Goodwillie, A. M.; Ryan, W.; Carbotte, S.; Melkonian, A.; Coplan, J.; Arko, R.; O'Hara, S.; Ferrini, V.; Leung, A.; Bonckzowski, J.

    2008-12-01

    Broadening the experience of undergraduates can be achieved by enabling free, unrestricted and convenient access to real scientific data. With funding from the U.S. National Science Foundation, the Marine Geoscience Data System (MGDS) (http://www.marine-geo.org/) serves as the integrated data portal for various NSF-funded projects and provides free public access and preservation to a wide variety of marine and terrestrial data including rock, fluid, biology and sediment samples information, underway geophysical data and multibeam bathymetry, water column and multi-channel seismics data. Users can easily view the locations of cruise tracks, sample and station locations against a backdrop of a multi-resolution global digital elevation model. A Search For Data web page rapidly extracts data holdings from the database and can be filtered on data and device type, field program ID, investigator name, geographical and date bounds. The data access experience is boosted by the MGDS use of standardised OGC-compliant Web Services to support uniform programmatic interfaces. GeoMapApp (http://www.geomapapp.org/), a free MGDS data visualization tool, supports map-based dynamic exploration of a broad suite of geosciences data. Built-in land and marine data sets include tectonic plate boundary compilations, DSDP/ODP core logs, earthquake events, seafloor photos, and submersible dive tracks. Seamless links take users to data held by external partner repositories including PetDB, UNAVCO, IRIS and NGDC. Users can generate custom maps and grids and import their own data sets and grids. A set of short, video-style on-line tutorials familiarises users step- by-step with GeoMapApp functionality (http://www.geomapapp.org/tutorials/). Virtual Ocean (http://www.virtualocean.org/) combines the functionality of GeoMapApp with a 3-D earth browser built using the NASA WorldWind API for a powerful new data resource. MGDS education involvement (http://www.marine-geo.org/, go to Education tab) includes the searchable Media Bank of images and video; KML files for viewing several MGDS data sets in Google Earth (tm); support in developing undergraduate- level teaching modules using NSF-MARGINS data. Examples of many of these data sets will be shown.

  11. Off-line cursive handwriting recognition compared with on-line recognition

    Microsoft Academic Search

    R. Seiler; M. Schenkel; F. Eggimannn

    1996-01-01

    Off-line handwriting recognition has wider applications than on-line recognition, yet it seems to be a harder problem. While on-line recognition is based on pen trajectory data, off-line recognition has to rely on pixel data only. We present a comparison between an off-line and an on-line recognition system using the same databases and system design. Both systems use a sliding window

  12. Evaluation of the On-Line Testing Features of a Fail-Safe Railway Control System

    Microsoft Academic Search

    L. Romano; Z. Kalbarczyk; R. K. Iyer; A. Mazzeo; N. Mazzocca

    This paper is focused on the evaluation of the on-line testing mechanisms of a fail-safe railway control system. The system supports several on-line testing procedures that are to be performed by the processing units within assigned hard real-time constraints. The primary objective of this study is to quantify the effectiveness of the on-line testing procedures in terms of the provided

  13. Content Delivery and Vertical Integration in On-line Content Markets

    Microsoft Academic Search

    Diego Lanzi; Massimiliano Marzo

    2005-01-01

    On-line content delivery and vertical alliances between conduit and content providers are nowadays crucial issues in on-line content markets. In this paper, we discuss and compare two types of model for on-line content delivery: push and pull. We assume non-zero marginal cost for network transits, justified by the presence of network services for content delivery (like data caching). Under both

  14. Implementation of on-line clutch pressure estimation for stepped automatic transmissions

    Microsoft Academic Search

    Sarawoot Watechagit; Krishnaswamy Srinivasan

    2005-01-01

    On-line estimation of clutch pressures in hydraulically powered stepped automatic transmissions can be useful for on-line diagnostics or development of closed-loop transmission control to improve shift quality. This paper presents the development and implementation of a model-based sliding mode observer to provide on-line estimates of clutch pressures for the clutches involved in gear shifts. The estimation of transmission input torque

  15. On-Line Data Stream Query Processing Using Finite State Automata

    Microsoft Academic Search

    Ali A. Safaei; Mostafa S. HAghjoo; Mohamad Ghalambor; Fatemeh Abdi

    2009-01-01

    In data stream systems, data does not appear in form of persistent relations, but rather arrives in multiple, continuous, rapid, time-varying streams. Although, the nature of data streams is on-line, the well-known data stream models don't consider on-line query processing. This is a major deficit in these environments. In this paper an on-line query processing model for data streams is

  16. Resonance ionization laser ion sources for on-line isotope separators (invited)

    NASA Astrophysics Data System (ADS)

    Marsh, B. A.

    2014-02-01

    A Resonance Ionization Laser Ion Source (RILIS) is today considered an essential component of the majority of Isotope Separator On Line (ISOL) facilities; there are seven laser ion sources currently operational at ISOL facilities worldwide and several more are under development. The ionization mechanism is a highly element selective multi-step resonance photo-absorption process that requires a specifically tailored laser configuration for each chemical element. For some isotopes, isomer selective ionization may even be achieved by exploiting the differences in hyperfine structures of an atomic transition for different nuclear spin states. For many radioactive ion beam experiments, laser resonance ionization is the only means of achieving an acceptable level of beam purity without compromising isotope yield. Furthermore, by performing element selection at the location of the ion source, the propagation of unwanted radioactivity downstream of the target assembly is reduced. Whilst advances in laser technology have improved the performance and reliability of laser ion sources and broadened the range of suitable commercially available laser systems, many recent developments have focused rather on the laser/atom interaction region in the quest for increased selectivity and/or improved spectral resolution. Much of the progress in this area has been achieved by decoupling the laser ionization from competing ionization processes through the use of a laser/atom interaction region that is physically separated from the target chamber. A new application of gas catcher laser ion source technology promises to expand the capabilities of projectile fragmentation facilities through the conversion of otherwise discarded reaction fragments into high-purity low-energy ion beams. A summary of recent RILIS developments and the current status of laser ion sources worldwide is presented.

  17. Resonance ionization laser ion sources for on-line isotope separators (invited)

    SciTech Connect

    Marsh, B. A. [EN Department, CERN, 1211 Geneva (Switzerland)] [EN Department, CERN, 1211 Geneva (Switzerland)

    2014-02-15

    A Resonance Ionization Laser Ion Source (RILIS) is today considered an essential component of the majority of Isotope Separator On Line (ISOL) facilities; there are seven laser ion sources currently operational at ISOL facilities worldwide and several more are under development. The ionization mechanism is a highly element selective multi-step resonance photo-absorption process that requires a specifically tailored laser configuration for each chemical element. For some isotopes, isomer selective ionization may even be achieved by exploiting the differences in hyperfine structures of an atomic transition for different nuclear spin states. For many radioactive ion beam experiments, laser resonance ionization is the only means of achieving an acceptable level of beam purity without compromising isotope yield. Furthermore, by performing element selection at the location of the ion source, the propagation of unwanted radioactivity downstream of the target assembly is reduced. Whilst advances in laser technology have improved the performance and reliability of laser ion sources and broadened the range of suitable commercially available laser systems, many recent developments have focused rather on the laser/atom interaction region in the quest for increased selectivity and/or improved spectral resolution. Much of the progress in this area has been achieved by decoupling the laser ionization from competing ionization processes through the use of a laser/atom interaction region that is physically separated from the target chamber. A new application of gas catcher laser ion source technology promises to expand the capabilities of projectile fragmentation facilities through the conversion of otherwise discarded reaction fragments into high-purity low-energy ion beams. A summary of recent RILIS developments and the current status of laser ion sources worldwide is presented.

  18. THE OPTIMAL IMPLEMENTATION OF ON-LINE OPTIMIZATION FOR CHEMICAL AND REFINERY PROCESSES

    E-print Network

    Pike, Ralph W.

    A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agriculture and Mechanical A. Industrial Applications of On-Line Optimization . . . . . . . . . . . . . . . . . . 15 B. Key

  19. Accurate on line measurements of low fluences of charged particles

    NASA Astrophysics Data System (ADS)

    Palla, L.; Czelusniak, C.; Taccetti, F.; Carraresi, L.; Castelli, L.; Fedi, M. E.; Giuntini, L.; Maurenzig, P. R.; Sottili, L.; Taccetti, N.

    2015-03-01

    Ion beams supplied by the 3MV Tandem accelerator of LABEC laboratory (INFN-Firenze), have been used to study the feasibility of irradiating materials with ion fluences reproducible to about 1%. Test measurements have been made with 7.5 MeV 7Li2+ beams of different intensities. The fluence control is based on counting ions contained in short bursts generated by chopping the continuous beam with an electrostatic deflector followed by a couple of adjustable slits. Ions are counted by means of a micro-channel plate (MCP) detecting the electrons emitted from a thin layer of Al inserted along the beam path in between the pulse defining slits and the target. Calibration of the MCP electron detector is obtained by comparison with the response of a Si detector.

  20. Steam-Coal Gasification Using CaO and KOH for in Situ Carbon and Sulfur Capture

    SciTech Connect

    Siefert, Nicholas S.; Shekhawat, Dushyant; Litster, Shawn; Berry, David, A

    2013-08-01

    We present experimental results of coal gasification with and without the addition of calcium oxide and potassium hydroxide as dual-functioning catalyst–capture agents. Using two different coal types and temperatures between 700 and 900 °C, we studied the effect of these catalyst–capture agents on (1) the syngas composition, (2) CO{sub 2} and H{sub 2}S capture, and (3) the steam–coal gasification kinetic rate. The syngas composition from the gasifier was roughly 20% methane, 70% hydrogen, and 10% other species when a CaO/C molar ratio of 0.5 was added. We demonstrated significantly enhanced steam–coal gasification kinetic rates when adding small amounts of potassium hydroxide to coal when operating a CaO–CaCO{sub 3} chemical looping gasification reactor. For example, the steam–coal gasification kinetic rate increased 250% when dry mixing calcium oxide at a Ca/C molar ratio of 0.5 with a sub-bituminous coal, and the kinetic rate increased 1000% when aqueously mixing calcium oxide at a Ca/C molar ratio of 0.5 along with potassium hydroxide at a K/C molar ratio of 0.06. In addition, we conducted multi-cycle studies in which CaCO{sub 3} was calcined by heating to 900 °C to regenerate the CaO, which was then reused in repeated CaO–CaCO{sub 3} cycles. The increased steam–coal gasification kinetics rates for both CaO and CaO + KOH persisted even when the material was reused in six cycles of gasification and calcination. The ability of CaO to capture carbon dioxide decreased roughly 2–4% per CaO–CaCO{sub 3} cycle. We also discuss an important application of this combined gasifier–calciner to electricity generation and selling the purge stream as a precalcined feedstock to a cement kiln. In this scenario, the amount of purge stream required is fixed not by the degradation in the capture ability but rather by the requirements at the cement kiln on the amount of CaSO{sub 4} and ash in the precalcined feedstock.

  1. Kinetics of wetting for MgO, CaO, and BeO by Pd, Pt, and Rh melts

    NASA Astrophysics Data System (ADS)

    Timofeev, A. I.; Chentsov, V. P.

    2015-01-01

    The wetting of magnesium, calcium, and beryllium oxides (MgO, CaO, and BeO) is considered, depending on the ratios of the surface tensions of the oxides to the melts at inequality ?sg/?lg < 1 characteristic of metallophobic solid surfaces. It is shown that the changes in the wetting angle with temperature during isothermal exposure are determined by the ratio of the surface tensions of the phases ?MgO/?Me. It is found that the wetting angle moves down or up when the ratios of the surface tensions increase or decrease, respectively, depending on the values of ?sg and ?lg.

  2. Heterogeneous-nucleation and glass-formation studies of 56Ga2O3-44CaO

    NASA Technical Reports Server (NTRS)

    Ethridge, Edwin C.; Curreri, Peter A.; Pline, David

    1987-01-01

    Glass formation and heterogeneous crystallization are described for the reluctant-glass-forming 56Ga2O3-44CaO eutectic composition. The times and temperatures for nucleation at various cooling rates and experimental conditions were measured and empirical continuous-cooling-crystallization boundaries were constructed for various heterogeneous nucleation processes. A definition for an empirical critical cooling rate to form a glass from reluctant borderline glass formers is proposed, i.e., the cooling rate that results in glass formation in 95 percent of the quenching experiments.

  3. Asymmetrical flow field-flow fractionation with on-line detection for drug transfer studies: a feasibility study.

    PubMed

    Hinna, Askell; Steiniger, Frank; Hupfeld, Stefan; Brandl, Martin; Kuntsche, Judith

    2014-12-01

    Knowledge about drug retention within colloidal carriers is of uppermost importance particularly if drug targeting is anticipated. The aim of the present study was to evaluate asymmetrical flow field-flow fractionation (AF4) with on-line UV/VIS drug quantification for its suitability to determine both release and transfer of drug from liposomal carriers to a model acceptor phase consisting of large liposomes. The hydrophobic porphyrin 5,10,15,20-tetrakis(4-hydroxyphenyl)21H,23H-porphine (p-THPP), a fluorescent dye with an absorbance maximum in the visible range and structural similarity to the clinically used photosensitizer temoporfin, was used as a model drug, and two types of large liposomes were studied as a potential model acceptor phase. Efficiency of separation of small donor from large acceptor liposomes by AF4 was evaluated in dependence on the injected lipid mass using two different channel geometries. Drug quantification by on-line absorbance measurements was established by comprehensive evaluation of the size-dependent turbidity contribution in on-line UV/VIS detection and by comparison with off-line results obtained for the respective dye-loaded donor formulations (dissolved in methanol). Due to distinct differences in size, the acceptor liposomes (mean diameters ?300-400 nm) could efficiently be separated from the donor liposomes (mean diameter ?70 nm) with less than 4 % of p-THPP detected in the overlap region between both vesicle populations. Whereas p-THPP could accurately be determined in the fraction of small vesicles, on-line quantification was impaired in the fraction of the large acceptor liposomes due to the pronounced contribution of turbidity (about 80 % of total UV/VIS extinction signal). The AF4-based release/transfer approach suggested here was found repeatable and robust. The employed combination of AF4 with multi-angle laser light scattering furthermore provided detailed size information of the eluting sample and thus allowed to detect instabilities and/or interactions between the donor and acceptor liposomes. Drug quantification by on-line absorbance measurements was found feasible for the chosen model drug, but careful (re-)evaluation of turbidity effects is crucial for other drug and carrier combinations. PMID:24518901

  4. BUILDING ROBUST APPEARANCE MODELS USING ON-LINE FEATURE SELECTION

    SciTech Connect

    PORTER, REID B. [Los Alamos National Laboratory; LOVELAND, ROHAN [Los Alamos National Laboratory; ROSTEN, ED [Los Alamos National Laboratory

    2007-01-29

    In many tracking applications, adapting the target appearance model over time can improve performance. This approach is most popular in high frame rate video applications where latent variables, related to the objects appearance (e.g., orientation and pose), vary slowly from one frame to the next. In these cases the appearance model and the tracking system are tightly integrated, and latent variables are often included as part of the tracking system's dynamic model. In this paper we describe our efforts to track cars in low frame rate data (1 frame/second) acquired from a highly unstable airborne platform. Due to the low frame rate, and poor image quality, the appearance of a particular vehicle varies greatly from one frame to the next. This leads us to a different problem: how can we build the best appearance model from all instances of a vehicle we have seen so far. The best appearance model should maximize the future performance of the tracking system, and maximize the chances of reacquiring the vehicle once it leaves the field of view. We propose an online feature selection approach to this problem and investigate the performance and computational trade-offs with a real-world dataset.

  5. Blockwise Adversarial Model for On-line Ciphers and Symmetric Encryption Schemes

    E-print Network

    Fouque, Pierre-Alain

    Blockwise Adversarial Model for On-line Ciphers and Symmetric Encryption Schemes Pierre and probabilistic encryption schemes. On-line encryption schemes allow to encrypt messages even if the whole message is not known at the begin- ning of the encryption. The new introduced adversaries better capture the on

  6. Disambiguating Prepositional Phrase Attachments by Using On-Line Dictionary Definitions

    Microsoft Academic Search

    Karen Jensen; Jean-Louis Binot

    1987-01-01

    Standard on-line dictionaries offer a wealth of knowledge expressed in natural language form. We claim that such knowledge can and should be accessed by natural language processing systems to solve difficult ambiguity problems. This paper sustains that claim by describing a set of computational tools and techniques used to disambiguate prepositional phrase attachments in English sentences, by accessing on-line dictionary

  7. A Survey of Five On-line Retrieval Systems. Final Report.

    ERIC Educational Resources Information Center

    Welch, Noreen O.

    This report is a survey of five on-line retrieval systems that, with one exception, have been used to demonstrate on-line access to the recently developed Committee on Scientific and Technical Information (COSATI) inventory of government sponsored work now in progress in the area of information sciences and technology. The report was prepared to…

  8. Analysis of ERIC On-Line File Searching Procedures and Guidelines for Searching. Final Report.

    ERIC Educational Resources Information Center

    Bourne, Charles P.; And Others

    In order to identify and explain the reasons for differences in average on-line search rates among terminal installations, the operations and performance of several facilities using the Lockheed DIALOG system for on-line searching of the ERIC data base were studied. Detailed examinations were made of such aspects as the DIALOG system response time…

  9. On-line Newspapers and Genre Development on the World Wide Web

    Microsoft Academic Search

    Jonas Lundberg

    2001-01-01

    In this paper I describe a genre analysis for on-line newspapers, revealing how their mediating form affect news related activities. A repertoire of elements was developed during the analysis of three on-line newspapers, to describe them. It is a repertoire of content, information structure and interaction elements together with with a repertoire of mediationg roles. The analysis in terms of

  10. On-line estimation of product properties for crude distillation units

    Microsoft Academic Search

    Tirtha Chatterjee; Deoki N. Saraf

    2004-01-01

    The stringent quality requirement of petroleum products in a highly competitive market makes on-line monitoring and control of product properties essential. But unfortunately few on-line hardware sensors are available and these are also difficult to maintain. It is, therefore, necessary to develop ‘software sensors’ to predict the quality using other easily measurable secondary variables. This study presents an algorithm that

  11. Research on the Preventive Strategy of Credit Risk in On-Line Auction Market

    Microsoft Academic Search

    Qinghua Zhang

    2006-01-01

    Along with the swift development of on-line auction, credit problem has become a focus attracting increasing attention of people. Information flow, capital flow and logistics exist in both traditional business transaction and on-line auction. Only when all of the above three factors finish backflow, could it be regarded as the completion of transaction. Therefore, carrying out strict supervision on the

  12. hard copy ISSN 1974-3041 on-line ISSN 1974-305X

    E-print Network

    Ceragioli, Francesca

    hard copy ISSN 1974-3041 on-line ISSN 1974-305X La Matematica e le sue Applicazioni n. 17, 2008 Applicazioni hard copy ISSN 1974-3041 on-line ISSN 1974-305X Direttore: Claudio Canuto Comitato editoriale: N of marketing activities. The paper describes a methodology to complete the database of the official statistical

  13. A flexible model for estimating price dynamics in on-line auctions

    Microsoft Academic Search

    Wolfgang Jank; Galit Shmueli; Shu Zhang

    2010-01-01

    The path that the price takes during an on-line auction plays an important role in understanding and forecasting on-line auctions. Price dynamics, such as the price velocity or its acceleration, capture the speed at which auction information changes. The ability to estimate price dynamics accurately is especially important in realtime price forecasting, where bidders and sellers must make quick decisions

  14. High School Open On-Line Courses (HOOC): A Case Study from Italy

    ERIC Educational Resources Information Center

    Canessa, Enrique; Pisani, Armando

    2013-01-01

    The first implementation of complete high school, open on-line courses (HOOC) aiming to support the training and basic scientific knowledge of young students from the Liceo Ginnasio Dante Alighieri in Gorizia, Italy, is discussed. Using the open source and automated recording system openEyA, HOOC give a student the opportunity to watch on-line, at…

  15. Developments for a Wearable On-line Sleep and Wake Discrimination System Walter Karlen

    E-print Network

    Lausanne, Ecole Polytechnique Fédérale de

    troubles and disorders, and can reduce health care costs (?). Home monitoring of sleep/wake behaviorSLEEPIC Developments for a Wearable On-line Sleep and Wake Discrimination System Walter Karlen awareness, sleep and wake discrimination, on-line classification, embedded intelligence. Abstract

  16. An On-Line Pneumatic Cigarette Inspection Device Based on Two Tightly Coupled Microprocessors

    Microsoft Academic Search

    Giacomo Bucci; Giovanni Pezzi; Mario Salmon

    1984-01-01

    Ventilation is a technique for controlling the amount of both nicotine and tar delivered to smokers. VECOM is a system designed to control cigarette ventilation. It operates on every cigarette, on-line with the production process, taking measurements in accordance with a pneumatic model of ventilated cigarettes. Presented are the problems associated with performing on-line measurements, error correction, and overall system

  17. PETS Metrics: On-Line Performance Evaluation Service David P. Young and James M. Ferryman

    E-print Network

    Reading, University of

    PETS Metrics: On-Line Performance Evaluation Service David P. Young and James M. Ferryman.young][j.m.ferryman]@reading.ac.uk Abstract This paper presents the PETS Metrics On-line Evaluation Service for computational visual of a particular problem. To combat this problem standard datasets have been created: PETS, CAVIAR

  18. AUTOMATIC MALFUNCTION DIAGNOSIS BY ON-LINE EXPERT SYSTEM FOR UNDERGROUND MOBILE MACHINES

    E-print Network

    Paris-Sud XI, Université de

    AUTOMATIC MALFUNCTION DIAGNOSIS BY ON-LINE EXPERT SYSTEM FOR UNDERGROUND MOBILE MACHINES P to monitor such machinery from a surface Station, in real time, using a highiy reliable digital transmission). In automatic Operation, with computerised on-line monitoring control from the surface, the personnel

  19. Integration of On-Line Protein Digestion, Peptide Separation, and Protein Identification Using

    E-print Network

    Zare, Richard N.

    Integration of On-Line Protein Digestion, Peptide Separation, and Protein Identification Using promotes penetra- tion of large molecular proteins into the column. The immobilized pepsin-digested electrophoresis column to a mass spectrometer. The on-line digestion of insulin chain and lysozyme provides

  20. Coarse Grained Parallel OnLine Analytical Processing (OLAP) For Data Mining

    E-print Network

    Rau-Chaplin, Andrew

    Coarse Grained Parallel On­Line Analytical Processing (OLAP) For Data Mining Frank Dehne 1 , Todd­ puting model (CGM) to on­line analytical processing (OLAP) for data mining. We present a general been tremendous growth in the data warehous­ ing market. Despite the sophistication and maturity

  1. On-line manipulation planning for two robot arms in a dynamic environment

    Microsoft Academic Search

    Tsai-Yen Li; Jean-Claude Latombe

    1995-01-01

    In a dynamic and partially unpredictable environment, robot motion planning must be on-line. The planner receives a continuous flow of information about occurring events and generates new plans, while previously planned motions are being executed. This paper describes an on-line planner for two cooperating arms whose task is to grab parts on a conveyor belt and transfer them to their

  2. On-Line Manipulation Planning for Two Robot Arms in a Dynamic Enviroment

    Microsoft Academic Search

    Tsai-yen Li; Jean-claude Latombe

    1995-01-01

    In a constantly changing and partially unpredictable environment, robot motion planningmust be on-line. The planner receives a continuous flow of information about occurring eventsand generates new plans, while previously planned motions are being executed. This paperdescribes an on-line planner for two cooperating arms whose task is to grab parts of varioustypes on a conveyor belt and transfer them to their

  3. Integrating On-Line Technology into Counseling Curricula: Emerging Humanistic Factors.

    ERIC Educational Resources Information Center

    Lundberg, David J.

    2000-01-01

    Examines integration of on-line technology into graduate counseling course and student reactions. No student indicated that computer experiences had negative effects on motivation. Challenges include a better understanding of how behavior is affected when mediated by technology, understanding of how human interaction is affected by on-line

  4. Regulation with on-line gravity compensation for robots with elastic joints

    E-print Network

    De Luca, Alessandro

    to static friction and/or uncertainty in the gravity compensation. I. INTRODUCTION Control algorithmsRegulation with on-line gravity compensation for robots with elastic joints Loredana Zollo Scuola,80125 Napoli, Italy Email: siciliano@unina.it Abstract--In this paper a PD control with on-line gravity

  5. North Carolina State University Web On-Line Financial (WOLF) Reports

    E-print Network

    Xie, Tao

    North Carolina State University Web On-Line Financial (WOLF) Reports In conjunctionVision Reports are moving to the web. The new reports are called: Web On-Line Financial (WOLF) Reports and are available in the NC State Administrative Portal or can be found at the following URL: https://www.acs.ncsu.edu/scripts/campus/wolf

  6. On-line stator winding fault diagnosis in induction generators for renewable generation

    Microsoft Academic Search

    I. Albizu; A. Tapia; J. R. Saenz; A. J. Mazon; I. Zarnora

    2004-01-01

    Renewable generation systems are increasing its presence in electrical power systems. For this reason, it is more important than ever to count with reliable and secure generation systems. In this way, the use of on-line diagnostic techniques in the maintenance schemes can be useful. This paper is about on-line condition monitoring in induction generators for small hydro stations and wind

  7. Students Reflecting on Test Performance and Feedback: An On-Line Approach

    ERIC Educational Resources Information Center

    Fyfe, Georgina; Fyfe, Sue; Meyer, Jan; Ziman, Mel; Sanders, Kathy; Hill, Julie

    2014-01-01

    Undergraduate students accessing on-line tests in Human Biology in three Western Australian universities were asked to complete an on-line post-test reflective survey about their perceptions of their test performance in light of automated feedback. The survey allowed pre-determined choices and comment text boxes relating to students'…

  8. On-line remote prediction of gasoline properties by combined optical methods

    Microsoft Academic Search

    Iris Litani-Barzilai; Ilan Sela; Valery Bulatov; Irena Zilberman; Israel Schechter

    1997-01-01

    On-line prediction of 10 gasoline properties, such as research and motor octane numbers, vapor pressure, API gravity, aromatic contents, etc., are carried out on-line by a remotely operated detector coupled to the main control unit by communication optical fibers. This information is of considerable importance since it is needed for process monitoring and for the preparation of final petrochemical products

  9. Metacomputing for On-Line Stability Analysis in Power Systems: A Proposal

    Microsoft Academic Search

    Giovanni Aloisio; M. A. Bochicchio; M. La Scala

    1996-01-01

    The on-line Transient Stability Analysis (TSA) is a challenge problem in power systems, concerning the detection of fault conditions (contingencies) which can produce instability in the power networks. In the paper the issues related to the use of metacomputing for on-line TSA have been analyzed and a solution is proposed allowing the simulation of hundreds of dynamic stability contingencies as

  10. Report on On-Line Trial Test for Fourth-Grade Students -- May 2009

    ERIC Educational Resources Information Center

    Verbic, Srdjan; Tomic, Boris; Kartal, Vesna

    2010-01-01

    On-line trial testing for fourth-grade students was an exploratory study realized as a part of the project "Developing annual test of students' achievement in Nature & Society" realized by Institute for Education Quality and Evaluation. Main ideas of the study were to explore possibilities for on-line testing at national level in Serbia, and to…

  11. Novel Hybrid NN/HMM Modelling Techniques for On-line Handwriting Recognition

    E-print Network

    Paris-Sud XI, Université de

    Novel Hybrid NN/HMM Modelling Techniques for On-line Handwriting Recognition Joachim Schenk for handwriting recognition. The tied posterior model ap- proximates the output probability density function baseline HMM. Keywords: On-line handwriting recognition, HMM, NN, hybrid, tandem, tied posteriors 1

  12. Reducing Annotation Workload Using a Codebook Mapping and its Evaluation in On-Line Handwriting

    E-print Network

    Paris-Sud XI, Université de

    Reducing Annotation Workload Using a Codebook Mapping and its Evaluation in On-Line Handwriting on the raw handwritten data. Evaluation is proposed on two different datasets. Keywords-On-Line Handwriting and its assessment. An offline handwriting annotation system [13] proposes a similar idea to label a large

  13. A COMPARISON OF TWO ON-LINE HANDWRITING RECOGNITION METHODS FOR UNCONSTRAINED TEXT ENTRY BY CHILDREN

    E-print Network

    A COMPARISON OF TWO ON-LINE HANDWRITING RECOGNITION METHODS FOR UNCONSTRAINED TEXT ENTRY for on-line handwriting recognition based text input with child users aged 7 and 8. The study involved that used the two methods preferred real time recognition. Keywords Children, Handwriting recognition, Text

  14. On-line Writer Adaptation for Handwriting Recognition using Fuzzy Inference Harold Mouch`ere

    E-print Network

    Paris-Sud XI, Université de

    On-line Writer Adaptation for Handwriting Recognition using Fuzzy Inference Systems Harold Mouch present an automatic on-line adaptation mechanism to the writer's handwriting style for the recognition to the handwriting style of the writer that is currently using the system. This adaptation mechanism has been tested

  15. Error Repair in Human Handwriting -An Intelligent User Interface for Automatic On-Line Handwriting Recognition

    E-print Network

    Hürst, Wolfgang

    Error Repair in Human Handwriting - An Intelligent User Interface for Automatic On-Line Handwriting, have to be consid- ered in designing an interface of a handwriting recognition system. Since both users in on-line handwriting recognition. First, we perform a user study on error occurrences

  16. A FAST LEXICALLY CONSTRAINED VITERBI ALGORITHM FOR ON-LINE HANDWRITING RECOGNITION

    E-print Network

    Paris-Sud XI, Université de

    A FAST LEXICALLY CONSTRAINED VITERBI ALGORITHM FOR ON- LINE HANDWRITING RECOGNITION ALAIN LIFCHITZ.maire@qut.edu.au Abstract : Most on-line cursive handwriting recognition systems use a lexical constraint to help improve are also applicable to Handwriting Recognition (HWR), which shares many features with ASR especially

  17. ISWCS 2008 1 On-line Bayesian Cramer-Rao Bounds for OFDM

    E-print Network

    Paris-Sud XI, Université de

    ISWCS 2008 1 On-line Bayesian Cramer-Rao Bounds for OFDM Slowly Varying Rayleigh Multi-path Channel and Fax: +33 (0)4 76 82 63 84 Abstract--The on-line Bayesian Cramer-Rao (BCRB) lower bound for the dynamic--Bayesian Cramer-Rao Bound, OFDM, Rayleigh complex gains. I. INTRODUCTION In case of Orthogonal Frequency Division

  18. Stability of On-line Resource Managers for Distributed Systems under Execution Time Variations

    E-print Network

    Lemmon, Michael

    A Stability of On-line Resource Managers for Distributed Systems under Execution Time Variations-time environments. When these variations are large and e ciency is required, on-line resource managers may these resource managers are stable, meaning that the resource usage is controlled under all possible scenarios

  19. A Note on On-line Load Balancing for Related Machines

    E-print Network

    Eckmiller, Rolf

    A Note on On-line Load Balancing for Related Machines Piotr Berman Marek Karpinski y Abstract We the machines are similar; in other cases it may be a good approximation. Our task is to allocate a sequence of jobs to the machines in an on-line fashion, while minimizing the maximum load of the machines

  20. On-line Load Balancing for Related Machines 1 Piotr Berman

    E-print Network

    Eckmiller, Rolf

    On-line Load Balancing for Related Machines 1 (Revised Version) Piotr Berman The Pennsylvania State for this problem. Key Words: on-line algorithm, load balancing, related machines, competitive ratio 1A preliminary-line load balancing was studied extensively over the years (cf., e

  1. A Web-Based Synchronous Collaborative Review Tool: A Case Study of an On-Line Graduate Course

    ERIC Educational Resources Information Center

    Serce, Fatma Cemile; Yildirim, Soner

    2006-01-01

    On-line collaboration is an instructional method that facilitates collaboration in an on-line learning setting. To promote effective collaboration, it is vital to reveal both the student's and the instructor's point of view pertaining to effective on-line collaboration. In this study, the effectiveness of a learning management system in on-line

  2. Evolution of the electronic structure of CaO thin films following Mo interdiffusion at high temperature

    NASA Astrophysics Data System (ADS)

    Cui, Yi; Pan, Yi; Pascua, Leandro; Qiu, Hengshan; Stiehler, Christian; Kuhlenbeck, Helmut; Nilius, Niklas; Freund, Hans-Joachim

    2015-01-01

    The electronic structure of CaO films of 10-60 monolayer thickness grown on Mo(001) has been investigated with synchrotron-mediated x-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy (STM). Upon annealing or reducing the thickness of the film, a rigid shift of the CaO bands to lower energy is revealed. This evolution is explained with a temperature-induced diffusion of Mo ions from the metal substrate to the oxide and their accumulation in the interface region of the film. The Mo substitutes divalent Ca species in the rocksalt lattice and is able to release electrons to the system. The subsequent changes in the Mo oxidation state have been followed with high-resolution XPS measurements. While near-interface Mo transfers extra electrons back to the substrate, generating an interface dipole that gives rise to the observed band shift, near-surface species are able to exchange electrons with adsorbates bound to the oxide surface. For example, exposure of O2 results in the formation of superoxo species on the oxide surface, as revealed from STM measurements. Mo interdiffusion is therefore responsible for the pronounced donor character of the initially inert oxide, and largely modifies its adsorption and reactivity behavior.

  3. Thermal conductivity and Seebeck coefficient of 12CaO?7Al2O3 electride with a cage structure

    NASA Astrophysics Data System (ADS)

    Kim, Sung Wng; Tarumi, Ryuichi; Iwasaki, Hideo; Ohta, Hiromichi; Hirano, Masahiro; Hosono, Hideo

    2009-08-01

    Thermal conductivity (?) and Seebeck coefficient (?) of electron-doped light-metal oxide 12CaO?7Al2O3 (C12A7 electride) with a subnanometer-sized cage structure are reported on single crystals with various electron concentrations (Ne) . The semiconducting C12A7 electride exhibits n -type conduction with the highest ? value of -100?VK-1 at 300 K. The ? exhibits an amorphouslike T2 dependence at low temperatures and varies between 2.3 and 4.5Wm-1K-1 at 300 K. This is an order-of-magnitude lower than that of the constituents, CaO (15Wm-1K-1) and Al2O3 (30Wm-1K-1) . These properties are attributed to the cage structure, suggesting that the semiconducting electride should be regarded as a phonon glass and electron crystal material. The thermoelectric performance of electrides evaluated by a dimensionless figure of merit (ZT) shows an optimized value of 2×10-3 at 300 K for the semiconducting electride with Ne of 5×1020cm-3 .

  4. Limits on Line Bisector Variability for Stars with Extrasolar Planets

    NASA Technical Reports Server (NTRS)

    Povich, M. S.; Giampapa, M. S.; Valenti, J. A.; Tilleman, T.; Barden, S.; Deming, D.; Livingston, W. C.; Pilachowski, C.

    2000-01-01

    We present an analysis of high-resolution synoptic spectra of ten F- and G-type stars, seven of which exhibit periodic radial velocity variations due to the presence of one or more substellar companions. We searched for subtle periodic variations in photospheric line asymmetry, as characterized by line bisectors. In principle, periodic variations in line asymmetry observed at lower spectral resolution could mimic the radial velocity signature of a companion, but we find no significant evidence of such behavior in our data. Observations were obtained from 1998 March to 1999 February using the National Solar Observatory (NSO) 1.52-m McMath-Pierce Solar Telescope Facility on Kitt Peak in conjunction with the solar-stellar spectrograph, achieving a resolving power of 1.2x10(exp5). To characterize line asymmetry, we first measured line bisectors for the unblended Fe I photospheric line at 625.26 nm. To improve sensitivity to small fluctuations, we then combined points in each bisector to form a velocity displacement with respect to the line core. We searched for periodic variations in this displacement, finding no substantial difference between stars with substellar companions and those without reported companions. We find no correlation between bisector velocity displacement and the known orbital phase of substellar companions around our target stars. Simulations of a periodic signal with noise levels that mimic our measurement errors suggest that we can exclude bisector variations with amplitudes greater than about 20 m/s. These results support the conclusion that extrasolar planets best explain the observed periodic variations in radial velocity.

  5. Fixed-target physics at Fermilab

    SciTech Connect

    Bjorken, J.D.

    1985-03-01

    The Fermilab Energy Saver is now successfully commissioned and fixed-target experimentation at high energy (800 GeV) has begun. In addition, a number of new experiments designed to exploit the unique features of the Tevatron are yet to come on-line. In this talk, we will review recent accomplishments in the fixed-target program and describe experiments in progress and others yet to come.

  6. Acute toxicity of cadmium to fish Labeo rohita and copepod Diaptomus forbesi pre-exposed to CaO and KMnO 4

    Microsoft Academic Search

    Tapas Kumar Dutta; Anilava Kaviraj

    2001-01-01

    96-h LC50 values of cadmium (Cd) to fish Labeo rohita and the copepod Diaptomus forbesi, determined by static bioassays, were, respectively, 89.5 and 10.2 mg\\/l. LC50 values increased significantly when fish pre-exposed to 100–350 mg\\/l CaO or 0.5–1.5 mg\\/l KMnO4 for 4 d and the copepod to 20–70 mg\\/l CaO or 0.25–1.0 mg\\/l KMnO4 for same period. The LC50 values

  7. Intelligent identification of wear mechanism via on-line ferrograph images

    NASA Astrophysics Data System (ADS)

    Wu, Tonghai; Peng, Yeping; Sheng, Chenxing; Wu, Jiaoyi

    2014-03-01

    Condition based maintenance(CBM) issues a new challenge of real-time monitoring for machine health maintenance. Wear state monitoring becomes the bottle-neck of CBM due to the lack of on-line information acquiring means. The wear mechanism judgment with characteristic wear debris has been widely adopted in off-line wear analysis; however, on-line wear mechanism characterization remains a big problem. In this paper, the wear mechanism identification via on-line ferrograph images is studied. To obtain isolated wear debris in an on-line ferrograph image, the deposition mechanism of wear debris in on-line ferrograph sensor is studied. The study result shows wear debris chain is the main morphology due to local magnetic field around the deposited wear debris. Accordingly, an improved sampling route for on-line wear debris deposition is designed with focus on the self-adjustment deposition time. As a result, isolated wear debris can be obtained in an on-line image, which facilitates the feature extraction of characteristic wear debris. By referring to the knowledge of analytical ferrograph, four dimensionless morphological features, including equivalent dimension, length-width ratio, shape factor, and contour fractal dimension of characteristic wear debris are extracted for distinguishing four typical wear mechanisms including normal, cutting, fatigue, and severe sliding wear. Furthermore, a feed-forward neural network is adopted to construct an automatic wear mechanism identification model. By training with the samples from analytical ferrograph, the model might identify some typical characteristic wear debris in an on-line ferrograph image. This paper performs a meaningful exploratory for on-line wear mechanism analysis, and the obtained results will provide a feasible way for on-line wear state monitoring.

  8. Sputter target

    DOEpatents

    Gates, Willard G. (Kansas City, MO); Hale, Gerald J. (Overland Park, KS)

    1980-01-01

    The disclosure relates to an improved sputter target for use in the deposition of hard coatings. An exemplary target is given wherein titanium diboride is brazed to a tantalum backing plate using a gold-palladium-nickel braze alloy.

  9. FEDIX on-line information service: Design, develop, test, and implement an on-line research and education information service. Annual status report, September 1992--August 1993

    SciTech Connect

    Rodman, J.A.

    1993-08-01

    Federal Information Exchange, Inc. (FIE) is a diversified information services company that is recognized as the major electronic link between the higher education community and the Federal government in the field of research administration. FIE provides a range of information related services to the government, academic and private sectors, including database management, software development and technical support. FEDIX is the on-line information service designed, developed and implemented by FIE to accomplish the following objectives: (1). Broaden the participation of the education community in Federal research and education programs by providing free and unrestricted on-line access to information from all participating Federal agencies; and (2). Provide the education community with on-line access to a single keyword-searchable system for research and educational funding opportunities at the participating Federal agencies.

  10. On-line solid phase extraction-liquid chromatography, with emphasis on modern bioanalysis and miniaturized systems.

    PubMed

    Rogeberg, Magnus; Malerod, Helle; Roberg-Larsen, Hanne; Aass, Cecilie; Wilson, Steven Ray

    2014-01-01

    On-line solid phase extraction (SPE)-liquid chromatography (LC) allows for automated, sensitive, precise and selective bioanalysis. It is a common feature in miniaturized- or nano LC systems, which are well suited for applications requiring high sensitivity and/or treatment of limited samples (laser micro-dissection samples, rare cancer stem cells, etc.). Traditionally, particles with reversed phase (RP) functional groups are used for the columns in SPE-LC systems. There is however an expanding diversity in SPE-LC combinations applied to meet today's bioanalytical challenges. Current online SPE-LC combinations employ, e.g. porous graphitic carbon (PGC) and hydrophilic interaction liquid chromatography (HILIC) materials for metabolomics and glycomics, restricted access media (RAM) columns coupled with nano LC for peptidomics, immunoaffinity trap columns for targeted proteomics and metal oxide affinity phases for phosphopeptide analysis. However, issues can arise when combining different phases in on-line SPE-LC, e.g. due to solvent incompatibilities between enrichment/separation principles and sample solvent requirements. Consequences can be low recovery and poor resolution, or need for additional instrumentation. On-line SPE-LC with very narrow columns (10-20 ?m inner diameters) can be appropriate to obtain maximum sensitivity and information. In such highly miniaturized systems, non-particulate columns are arguably more suited (e.g. monolithic or porous layer open tubular (PLOT) columns) as e.g. hardware contributions resulting in extra column volumes are reduced. Basic SPE-LC systems can be configured/modified to perform quite complex analytical operations, and certain columns, configurations and hardware can improve robustness. PMID:23746991

  11. Targeting adenovirus

    Microsoft Academic Search

    T J Wickham

    2000-01-01

    The use of targeted viral vectors to localize gene transfer to specific cell types holds many advantages over conventional, non-targeted vectors currently used in gene therapy. The resulting improvements in gene localization from targeted adenovirus vectors are likely to reduce immunogenicity and toxicity, increase safety, and enable the systemic administration of these vectors for multiple indications including cancer, cardiovascular disease,

  12. Web chatter before and after the Women's Health Initiative results: a content analysis of on-line menopause message boards.

    PubMed

    Cousineau, Tara M; Rancourt, Diana; Green, Traci Craig

    2006-03-01

    A content analysis was conducted on two on-line menopause message boards over 18 months, before and after the announcement of the Women's Health Initiative (WHI) study results on hormone therapy risks. Messages (N = 785) were coded based on overall context themes and specific content (N = 1132 codes). Results showed that "seeking symptom advice" about physical symptoms represented half (49%) of all codes. More specific content codes reflected inquiries about taking prescription hormone therapies, (HTs) how to cope with the menopausal transition, checking in with community members, and questions related to menopause onset and changes in menstrual patterns. Chi-square tests showed an increase in pharmaceutical advice codings over time on the medical board (p = .057) and a trend on the community board after the WHI (p = .10). Similarly, after the WHI there was an increase in the frequency of codes on the community board related to "Is this menopause?" suggesting a heightened awareness about menopause as a health issue. In conclusion, analyses of on-line message boards provide a rich, economical method to discern the needs of menopausal women, as well as to observe the potential impact of a widely publicized medical event that can inform innovative strategies in health promotion for this target population. PMID:16537284

  13. An On-Line Solid Phase Extraction-Liquid Chromatography-Tandem Mass Spectrometry Method for the Determination of Perfluoroalkyl Acids in Drinking and Surface Waters

    PubMed Central

    Mazzoni, Michela; Rusconi, Marianna; Valsecchi, Sara; Martins, Claudia P. B.; Polesello, Stefano

    2015-01-01

    An UHPLC-MS/MS multiresidue method based on an on-line solid phase extraction (SPE) procedure was developed for the simultaneous determination of 9 perfluorinated carboxylates (from 4 to 12 carbon atoms) and 3 perfluorinated sulphonates (from 4 to 8 carbon atoms). This work proposes using an on-line solid phase extraction before chromatographic separation and analysis to replace traditional methods of off-line SPE before direct injection to LC-MS/MS. Manual sample preparation was reduced to sample centrifugation and acidification, thus eliminating several procedural errors and significantly reducing time-consuming and costs. Ionization suppression between target perfluorinated analytes and their coeluting SIL-IS were detected for homologues with a number of carbon atoms less than 9, but the quantitation was not affected. Total matrix effect corrected by SIL-IS, inclusive of extraction efficacy, and of ionization efficiency, ranged between ?34 and +39%. The percentage of recoveries, between 76 and 134%, calculated in different matrices (tap water and rivers impacted by different pollutions) was generally satisfactory. LODs and LOQs of this on-line SPE method, which also incorporate recovery losses, ranged from 0.2 to 5.0?ng/L and from 1 to 20?ng/L, respectively. Validated on-line SPE-LC/MS/MS method has been applied in a wide survey for the determination of perfluoroalkyl acids in Italian surface and ground waters.

  14. Dimensional description of on-line wear debris images for wear characterization

    NASA Astrophysics Data System (ADS)

    Wu, Tonghai; Peng, Yeping; Du, Ying; Wang, Junqun

    2014-11-01

    As one of the most wear monitoring indicator, dimensional feature of individual particles has been studied mostly focusing on off-line analytical ferrograph. Recent development in on-line wear monitoring with wear debris images shows that merely wear debris concentration has been extracted from on-line ferrograph images. It remains a bottleneck of obtaining the dimension of on-line particles due to the low resolution, high contamination and particle's chain pattern of an on-line image sample. In this work, statistical dimension of wear debris in on-line ferrograph images is investigated. A two-step procedure is proposed as follows. First, an on-line ferrograph image is decomposed into four component images with different frequencies. By doing this, the size of each component image is reduced by one fourth, which will increase the efficiency of subsequent processing. The low-frequency image is used for extracting the area of wear debris, and the high-frequency image is adopted for extracting contour. Second, a statistical equivalent circle dimension is constructed by equaling the overall wear debris in the image into equivalent circles referring to the extracted total area and premeter of overall wear debris. The equivalent circle dimension, reflecting the statistical dimension of larger wear debris in an on-line image, is verified by manual measurement. Consequently, two preliminary applications are carried out in gasoline engine bench tests of durability and running-in. Evidently, the equivalent circle dimension, together with the previously developed concentration index, index of particle coverage area (IPCA), show good performances in characterizing engine wear conditions. The proposed dimensional indicator provides a new statistical feature of on-line wear particles for on-line wear monitoring. The new dimensional feature conveys profound information about wear severity.

  15. Dimensional description of on-line wear debris images for wear characterization

    NASA Astrophysics Data System (ADS)

    Wu, Tonghai; Peng, Yeping; Du, Ying; Wang, Junqun

    2014-09-01

    As one of the most wear monitoring indicator, dimensional feature of individual particles has been studied mostly focusing on off-line analytical ferrograph. Recent development in on-line wear monitoring with wear debris images shows that merely wear debris concentration has been extracted from on-line ferrograph images. It remains a bottleneck of obtaining the dimension of on-line particles due to the low resolution, high contamination and particle's chain pattern of an on-line image sample. In this work, statistical dimension of wear debris in on-line ferrograph images is investigated. A two-step procedure is proposed as follows. First, an on-line ferrograph image is decomposed into four component images with different frequencies. By doing this, the size of each component image is reduced by one fourth, which will increase the efficiency of subsequent processing. The low-frequency image is used for extracting the area of wear debris, and the high-frequency image is adopted for extracting contour. Second, a statistical equivalent circle dimension is constructed by equaling the overall wear debris in the image into equivalent circles referring to the extracted total area and premeter of overall wear debris. The equivalent circle dimension, reflecting the statistical dimension of larger wear debris in an on-line image, is verified by manual measurement. Consequently, two preliminary applications are carried out in gasoline engine bench tests of durability and running-in. Evidently, the equivalent circle dimension, together with the previously developed concentration index, index of particle coverage area (IPCA), show good performances in characterizing engine wear conditions. The proposed dimensional indicator provides a new statistical feature of on-line wear particles for on-line wear monitoring. The new dimensional feature conveys profound information about wear severity.

  16. First on-line results from the CRIS (Collinear Resonant Ionisation Spectroscopy) beam line at ISOLDE

    NASA Astrophysics Data System (ADS)

    Procter, T. J.; Flanagan, K. T.

    2013-04-01

    The CRIS (Collinear Resonant Ionisation Spectroscopy) experiment at the on-line isotope separator facility, ISOLDE, CERN, has been constructed for high-sensitivity laser spectroscopy measurements on radioactive isotopes. The technique determines the magnetic dipole and electric quadrupole moments, nuclear spin and changes in mean-square charge radii of exotic nuclei via measurement of their hyperfine structures and isotope shifts. In November 2011 the first on-line run was performed using the CRIS beam line, when the hyperfine structure of 207Fr was successfully measured. This paper will describe the technique and experimental setup of CRIS and present the results from the first on-line experiment.

  17. Advances in the helium-jet coupled on-line mass separator RAMA. [Recoil Atom Mass Analyzer

    SciTech Connect

    Moltz, D M; Aysto, J; Cable, M D; Parry, R F; Haustein, P E; Wouters, J M; Cerny, J

    1980-01-01

    General improvements to the on-line mass separator RAMA (Recoil Atom Mass Analyzer) have yielded a greater reliability and efficiency for some elements. A new utilitarian helium-jet chamber has been installed to facilitate quick target and degrader foil changes in addition to a new ion source holder. A higher efficiency hollow-cathode, cathode-extraction ion source, for lower melting point elements (< 1200/sup 0/C) has also been designed. Tests with the beta-delayed proton emitter /sup 37/Ca showed a factor of five increase in yield over the old hollow-cathode, anode-extraction source. A differentially-pumped-tape drive system compatible with both ..gamma..-..gamma.. and ..beta..-..gamma.. experiments has been incorporated into the general detection system. All major operating parameters will soon be monitored by a complete stand-alone microprocessor system which will eventually be upgraded to a closed-loop control system.

  18. A test-bench for isotope separator on-line of Beijing radioactive ion-beam facility

    NASA Astrophysics Data System (ADS)

    Tang, Bing; Ma, Ruigang; Huang, Qinghua; Chen, Lihua; Ma, Yingjun; Cui, Baoqun; Jiang, Weisheng

    2013-12-01

    A test-bench for isotope separator on-line of Beijing radioactive ion-beam facility (BRISOL) has been built in China Institute of Atomic Energy (CIAE). The test-bench consists of target station, charge exchange cell, mass separator, quadrupole, hexapole, multipole and beam diagnostic system. It is nearly the same configuration as the first stage of BRISOL and all these components will be used on the BRISOL. A series of experiments have been carried out on this test-bench, and the primary results showed that all the components worked well. A Li+ beam has been generated from the positive surface-ionization source and its emittance and the transmission of the beam line have been measured. The design, construction and experimental results of this test-bench have been presented.

  19. Can Teachers Learn through Enquiry On-Line? Studying Professional Development in Science Delivered On-Line and On-Campus. Research Report

    ERIC Educational Resources Information Center

    Harlen, Wynne; Doubler, Susan

    2004-01-01

    The paper reports findings from research into the extent to which an on-line course, "Try Science", achieved its objectives compared with a face-to-face course with the same content and objectives. "Try Science" has the dual aims of developing participants' understanding of science content and of teaching science through enquiry. Whilst the…

  20. A picosecond electron gun for surface analysis M. Aeschlimann,a) E. Hull, J. Cao,b) C. A. Schmuttenmaer, L. G. Jahn,@ Y. Gao,b)

    E-print Network

    Cao, Jianming

    A picosecond electron gun for surface analysis M. Aeschlimann,a) E. Hull, J. Cao,b) C. A investigations for a new design of an ultrashort pulsed laser activated electron gun for time resolved surface gun, in spite of an unusually long focal length and a small convergence angle of the pulsed electron

  1. Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 1 Chapter 4: Routing in Wireless Sensor

    E-print Network

    Hu, Fei

    Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 1 Chapter 4: Routing in Wireless Sensor Networks 4.1 Introduction to Routing in Wireless Sensor Networks Wireless Sensor Networks (WSNs) is a distributed wireless ad-hoc network

  2. Use of CaO as an activator for producing a price-competitive non-cement structural binder using ground granulated blast furnace slag

    SciTech Connect

    Kim, Min Sik; Jun, Yubin; Lee, Changha, E-mail: clee@unist.ac.kr; Oh, Jae Eun, E-mail: ohjaeeun@unist.ac.kr

    2013-12-15

    The use of calcium oxide (CaO) demonstrates a superior potential for the activation of ground granulated blast furnace slag (GGBFS), and it produces a higher mechanical strength than calcium hydroxide [Ca(OH){sub 2}]. The mechanical strength differences between CaO- and Ca(OH){sub 2}-activated GGBFS binders are explored using isothermal calorimetry, powder X-ray diffraction, thermogravimetric and differential thermal analysis (TGA and DTA) as well as compressive strength testing. Calcium silicate hydrate (C–S–H), Ca(OH){sub 2} and a hydrotalcite-like phase are found as reaction products in all samples. The TGA and DTA results indicate that the use of CaO produces more C–S–H, although this is not likely to be the primary cause of higher strength development in the CaO-activated GGBFS. Rather, other factors such as porosity may govern the strength at a higher order of magnitude. Significant reduction of Ca(OH){sub 2} occurs only with the use of Ca(OH){sub 2}, followed by the formation of carbonate (CaCO{sub 3}), indicating carbonation. -- Highlights: •CaO showed a better potential for the activation of GGBFS than Ca(OH){sub 2}. •Strength test, XRD, TGA/DTA and isothermal calorimetry are used. •C-S-H, Ca(OH){sub 2}, and a hydrotalcite-like phase are found in all samples. •The use of Ca(OH){sub 2} causes some degree of carbonation.

  3. FOURIER TRANSFORM INFRARED PHOTOACOUSTIC SPECTROSCOPY CHARACTERIZATION OF SULFUR-OXYGEN SPECIES RESULTING FROM THE REACTION OF SO2 WITH CAO AND CACO3

    EPA Science Inventory

    Fourier transform infrared photoacoustic spectroscopy (FTIR-PAS) has been used to investigate the reaction of SO2 in He with CaO and CaCO3 particles at temperatures between 25 and 900 C. SO2 reacts with CaC at 25 C, while the reaction of Ca-CO3 with SO2 is first evident at 550 C ...

  4. An automatic method for burn scar mapping using support vector X. CAO{{, J. CHEN*{, B. MATSUSHITA, H. IMURA" and L. WANG{{

    E-print Network

    Wang, Le

    on the ecosystem and the climatic system. We have developed an automatic burn scar mapping method using daily temperature and vegetation water content, respectively, and an automatic region growing method basedAn automatic method for burn scar mapping using support vector machines X. CAO{{, J. CHEN*{, B

  5. Dynamical localization in microdisk W. Fang1, H. Cao1, V. A. Podolskiy2,3, and E. E. Narimanov2

    E-print Network

    Cao, Hui

    Dynamical localization in microdisk lasers W. Fang1, H. Cao1, V. A. Podolskiy2,3, and E. E University, Corvallis, OR 97331 w-fang@northwestern.edu; VP:vpodolsk@physics.orst.edu; evgenii, 195304 (2001). 6. J. U. N¨ockel, A. D. Stone, G. Chen, H. Grossman and R. K. Chang, "Directional emission

  6. NUMERICAL SIMULATIONS OF AIR FLOW AND HEAT TRANSFER VIA PDES Fei Cao, Luz Angelica Caudillo-Mata, Natalia Iwanski, Yong Li, Kamran Sadiq,

    E-print Network

    by the air conditioning units (ACUs) with large scale fans into the plenum thereby pressurizing itNUMERICAL SIMULATIONS OF AIR FLOW AND HEAT TRANSFER VIA PDES By Fei Cao, Luz Angelica Caudillo://www.ima.umn.edu #12;IMA Mathematical Modeling in Industry XVII Workshop: Numerical Simulations of Air Flow and Heat

  7. Probabilistic on-line transportation problems with carrying-capacity constraints

    E-print Network

    Treleaven, Kyle (Kyle Ballantyne)

    2014-01-01

    This thesis presents new insights and techniques for the analysis and design of autonomous or technology-assisted ("intelligent") transportation systems. The focus is on cooperative, on-line planning and control, of a fleet ...

  8. Substroke Approach to HMM-based On-line Kanji Handwriting Recognition. 

    E-print Network

    Nakai, Mitsuru; Akira, Naoto; Shimodaira, Hiroshi; Sagayama, Shigeki

    2001-01-01

    A new method is proposed for on-line handwriting recognition of Kanji characters. The method employs substroke HMMs as minimum units to constitute Japanese Kanji characters and utilizes the direction of pen motion. The main motivation is to fully...

  9. Education and Training for On-Line Use of Data Bases

    ERIC Educational Resources Information Center

    Williams, Martha E.

    1977-01-01

    This paper discusses vehicles for education and training, tools and techniques for promotion, and details the information requirements of the processors, service managers, searchers, and end users of on-line data bases. (Author/KP)

  10. Integration of On-Line and Off-Line Diagnostic Algorithms for Aircraft Engine Health Management

    NASA Technical Reports Server (NTRS)

    Kobayashi, Takahisa; Simon, Donald L.

    2007-01-01

    This paper investigates the integration of on-line and off-line diagnostic algorithms for aircraft gas turbine engines. The on-line diagnostic algorithm is designed for in-flight fault detection. It continuously monitors engine outputs for anomalous signatures induced by faults. The off-line diagnostic algorithm is designed to track engine health degradation over the lifetime of an engine. It estimates engine health degradation periodically over the course of the engine s life. The estimate generated by the off-line algorithm is used to update the on-line algorithm. Through this integration, the on-line algorithm becomes aware of engine health degradation, and its effectiveness to detect faults can be maintained while the engine continues to degrade. The benefit of this integration is investigated in a simulation environment using a nonlinear engine model.

  11. On-line Hydraulic State Estimation in Urban Water Networks Using Reduced Models

    E-print Network

    Preis, Ami

    A Predictor-Corrector (PC) approach for on-line forecasting of water usage in an urban water system is presented and demonstrated. The M5 Model-Trees algorithm is used to predict water demands and Genetic Algorithms (GAs) ...

  12. 76 FR 7102 - Simplified Network Application Processing System, On-line Registration and Account Maintenance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-09

    ...100826397-1059-02] RIN 0694-AE98 Simplified Network Application Processing System, On-line...electronically via BIS's Simplified Network Application Processing (SNAP-R) system...request for comments entitled ``Simplified Network Application Processing System,...

  13. Using a strengths model to build an on-line nursing education program.

    PubMed

    Wieck, K Lynn; Alfred, Danita; Haas, Barbara K; Yarbrough, Susan

    2014-01-01

    The on-line environment is the new frontier for academia struggling to define its place in the evolving economy. A concern is how to engage students who maximize their on-line experience and graduate in a timely manner. A strengths model was used as the basis for development of an on-line doctoral nursing program. Upon entering the program, students were given a strengths assessment that focused both students and faculty on the positive attributes students were bringing to their doctoral studies. A positive feedback methodology using on-line discussions in each course was used to support the identified strengths. The optimal picture of a successful entering doctoral student appears to be a person whose top five strengths are learner, achiever, input, connectedness and responsibility. A strengths model promotes a positive learning environment and supports a teacher-learner dynamic where faculty members are encouraged to focus on the students' strengths rather than their challenges. PMID:24939333

  14. Automatic Detection of Gender and Handedness from On-Line Handwriting

    E-print Network

    Liwicki, Marcus

    Automatic Detection of Gender and Handedness from On-Line Handwriting Marcus LIWICKI a Andreas features have been presented in Huber (1999). Special interest has been focused on determining the gender

  15. Periodic Hartree-Fock study of B1 ? B2 reactions: phase transition in CaO

    NASA Astrophysics Data System (ADS)

    D'Arco, Philippe; Jolly, Luc-Henri; Silvi, Bernard

    1992-08-01

    The periodic Hartree-Fock method has been used to sample the potential energy hypersurface of CaO to determine a collective reaction pathway between the low-pressure (NaCl) and high-pressure (CsCl) phases. The predicted transition pressure, 68 GPa, is in good agreement with both experimental data and previous theoretical studies. At low pressure the enthalpy ( E + PV) surface presents only one minimum corresponding to the B1 (NaCl) structure. A second minimum appears at the B2 (CsCl) geometry when the pressure is increased. The transformation kinetics is estimated using the Johnson-Mehl model coupled to random nucleation and interface-controlled growth. Independently of the interfacial energy, the kinetics is highly pressure dependent. A pressure hysteresis loop is predicted. The results presented are in qualitative agreement with available data.

  16. Hydrogen-rich gas production via CaO sorption-enhanced steam gasification of rice husk: a modelling study.

    PubMed

    Beheshti, Sayyed Mohsen; Ghassemi, Hojat; Shahsavan-Markadeh, Rasoul; Fremaux, Sylvain

    2015-05-01

    Gasification is a thermochemical process in which solid or liquid fuels are transformed into synthesis gas through partial oxidation. In this paper, a kinetic model of rice husk gasification has been developed, which is interesting for the applications of the syngas produced. It is a zero-dimensional, steady-state model based on global reaction kinetic, empirical correlation of pyrolysis and is capable of predicting hydrogen yield in the presence of sorbent CaO. The model can also be used as a useful tool to investigate the influence of process parameters including steam/biomass ratio, CaO/fuel ratio (CaO/Fuel), and gasification temperature on hydrogen efficiency, CO2 capture ratio (CCR), and average carbonation conversion (Save). Similar to hydrogen formation, CCR also increases with increasing CaO/Fuel, but an opposite trend is exhibited in Save. Model predictions were compared with available data from the literature, which showed fairly good agreement. PMID:25403373

  17. High electron doping to a wide band gap semiconductor 12CaO•7Al2O3 thin film

    NASA Astrophysics Data System (ADS)

    Miyakawa, Masashi; Hirano, Masahiro; Kamiya, Toshio; Hosono, Hideo

    2007-04-01

    High-density electrons (˜1.9×1021cm-3) were doped into a polycrystalline film of a wide band gap (˜7eV) semiconductor 12CaO•7Al2O3 (C12A7) by an in situ postdeposition reduction treatment using an oxygen-deficient C12A7 overlayer. The resultant film exhibits metallic conduction with a Hall mobility of ˜2.5cm2V-1s-1 and a conductivity of ˜800Scm-1. Optical analyses indicate that most of the doped electrons behave as free carriers with an effective mass of 0.82me and the estimated in-grain mobility is 5.2cm2V-1s-1, which agrees reasonably with the value obtained for high-quality single crystals.

  18. Growth of shaped 12CaO×7Al 2O 3 crystals by the micro-pulling down method

    NASA Astrophysics Data System (ADS)

    Liu, Lijuan; Kagamitani, Yuji; Ehrentraut, Dirk; Yokoyama, Chiaki; Fukuda, Tsuguo

    2009-01-01

    12CaO×7Al 2O 3 (C12A7) single crystals have been successfully grown by the micro-pulling down method for the first time. Single and transparent C12A7 crystal was obtained with radio-frequency heating ?-PD system. Phase stability is discussed as a function of oxygen concentration in the growth atmosphere. A minimum 1.0 Vol% O 2 with nitrogen atmosphere yields C12A7 phase. The distribution of Ca, Al and O elements at cross-section part was investigated by the electron probe microanalysis. The crystal composition deviation could be controlled by reducing O 2 gas concentration to 1.0 Vol%.

  19. Mechanisms of oxygen ion diffusion in a nanoporous complex oxide 12CaO•7 Al2 O3

    NASA Astrophysics Data System (ADS)

    Sushko, Peter V.; Shluger, Alexander L.; Hayashi, Katsuro; Hirano, Masahiro; Hosono, Hideo

    2006-01-01

    We performed a theoretical analysis of O2- diffusion mechanisms in a nanoporous complex oxide 12CaO•7Al2O3 (C12A7). This material can be viewed as a positively charged framework, arranged in subnanometer sized cages, hosting extra-framework O2- ions occupying one in six cages. Using both classical molecular-dynamics simulations and ab initio calculations we demonstrate that the diffusion of O2- species is dominated by the exchange of framework and extra-framework O2- ions rather than by an interstitial diffusion mechanism. The results allow us to rationalize the origins of the experimentally observed high oxide ion conductivity of C12A7 and the stability of its lattice under positive ion-beam irradiation.

  20. On-line test of power distribution prediction system for boiling water reactors

    Microsoft Academic Search

    Y. Nishizawa; T. Kiguchi; S. Kobayashi; K. Takumi; H. Tanaka; R. Tsutsumi; M. Yokomi

    1982-01-01

    A power distribution prediction system for boiling water reactors has been developed and its on-line performance test has proceeded at an operating commercial reactor. This system predicts the power distribution or thermal margin in advance of control rod operations and core flow rate change. This system consists of an on-line computer system, an operator's console with a color cathode-ray tube,

  1. First structures on RyantoRainbow Line. Hframe structure on Line 1 ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    First structures on Ryan-to-Rainbow Line. H-frame structure on Line 1 (right) has historic porcelain suspension insulators and H-frame structure on Line 2 (center) has two historic porcelain insulators and one modern non-ceramic insulator. View to north - Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line, West bank of Missouri River, northeast of Great Falls, Great Falls, Cascade County, MT

  2. On-line HPLC\\/GC techniques for the analyses of biomass derived hydrocarbons

    Microsoft Academic Search

    D. J. Luzbetak; J. J. Hoffmann

    1982-01-01

    An automated on-line high-performance liquid chromatography\\/gas chromatography (HPLC\\/GC) technique was developed for the analysis of biomass extractables (biocrude) as renewable sources of energy. The method was developed with a simulated biocrude mixture of n-alkane and terpenoid standards, and was applied to a sample from Pedilanthus macrocarpus (Euphorbiaceae). Hydrocarbon group-type separations were achieved by using normal-phase HPLC. On-line injections into a

  3. The design of circuit in on-line monitoring system for traction transformer insulation

    Microsoft Academic Search

    Hao Tang; Jianbin Fan; Guangning Wu; Jinzhong Li

    2008-01-01

    In order to ensure the safety and stabilization of high-speed railway, it is very important to implement on-line monitoring system on traction transformer. The data acquisition, the main control circuit, the program of single chip Micyoco (SCM) and communication protocol, which are the components of the on-line monitoring system of traction transformer insulation, are roundly presented in this paper. This

  4. On-line Quizzing and its Effect on Student Engagement and Academic Performance

    Microsoft Academic Search

    Mark G. Urtel; Rafael E. Bahamonde; Alan E. Mikesky; Eileen M. Udry; Jeff S. Vessel

    2006-01-01

    The goal of this study was to determine if on-line out-of-class quizzing would lead to increases in (a) classroom engagement (b) academic performance and (c) preparation perception of college students. Twenty-four sophomore level students enrolled in a required functional anatomy course participated in this study. Results from this study indicate that on-line quizzing had a statistically significant impact on some

  5. Mining association rules procedure to support on-line recommendation by customers and products fragmentation

    Microsoft Academic Search

    S. Wesley Changchien; Tzu-chuen Lu

    2001-01-01

    Electronic Commerce (EC) has offered a new channel for instant on-line shopping. However, there are too many various products available from a great number of virtual stores on the Internet for Internet shoppers to select. On-line one-to-one marketing therefore becomes a great assistance to Internet shoppers. One of the most important marketing resources is the prior daily transaction records in

  6. An approach to situational market segmentation on on-line newspapers based on current tasks

    Microsoft Academic Search

    Anne Gutschmidt

    2010-01-01

    We discuss how a task-based situational market segmentation may be applied to on-line newspapers, distinguishing between fact finding, information gathering and browsing. During a period of four weeks we had 41 users keep a diary and recorded their surfing behavior on different on-line newspapers. The results of a Naive Bayes classification with feature selection indicate that content-related attributes such as

  7. On-line adaptive artificial neural network based vector control of permanent magnet synchronous motors

    Microsoft Academic Search

    M. A. Rahman; M. A. Hoque

    1998-01-01

    This paper presents a novel approach of speed control for a permanent magnet synchronous motor (PMSM) using on-line self tuning artificial neural network (ANN). Based on motor dynamics and nonlinear load characteristics, an ANN speed controller is developed and integrated with the vector control scheme of the PMSM drive. The combined use of off-line and on-line weights and biases adjustments

  8. Long term on-line speaker adaptation for large vocabulary dictation

    Microsoft Academic Search

    Eric Thelen; Forschungslaboratorien Aachen

    1996-01-01

    On-line speaker adaptation is desirable for speech recognitiondictation applications, because it o#ers the possibilitytoimprove the system with the speaker-speci#c data obtainedfrom the user. Since the user will work with such a deviceover a long period, for a dictation system the long termspeed. In contrast to speaker-dependent re-training,the speaker-speci#c speech data does not need to be storedfor on-line speaker adaptation and

  9. On-Line Manipulation Planning for Two Robot Arms in a Dynamic Environment

    Microsoft Academic Search

    Tsai-yen Li; Jean-claude Latombe

    1997-01-01

    In a constantly changing and partially unpredictable envi ronment, robot-motion planning must be on-line. The planner receives a continuous flow of information about occurring events and generates new plans while previously planned mo tions are being executed. This article describes an on-line planner for two cooperating arms whose task is to grab parts of various types on a conveyor belt

  10. Adaptation and Intelligent Retrieval of Learning Content to Enhance On-line Courses

    Microsoft Academic Search

    M. C. Mihaescu; Dumitru Dan Burdescu; Costel Marian Ionascu; Bogdan Logofatu

    2010-01-01

    Enhancing on-line courses is one of the most important issues of current e-Learning platforms. These platforms try to upgrade from simple environments where learners can download documents and take tests to complex environments where the learning content is adapted and intelligently retrieved. This paper presents a methodology for achieving such goals in an attempt to enhance on-line courses. The methodology

  11. An On-line Distributed Induction Motor Monitoring System Based-on ARM and CAN Bus

    Microsoft Academic Search

    Chenhui Wang; Yukun Liu; Liwei Guo; Yong Yue; Carsten Maple

    2011-01-01

    This paper presents an on-line distributed induction motor monitoring system based-on the ARM (Advanced RISC Machines), which is integrated with the embedded and CAN (Controller Area Network) bus technologies. The hardware structure of the system with the ARM microprocessor S3C2410X and CAN bus controller MCP2510 is introduced; the accomplishment of software of motor on-line monitoring system is also described. Compared

  12. Internet Technologies course with combined professor and on-line contents methodology

    Microsoft Academic Search

    Eduardo Maga Na; Daniel Morat

    Abstract— In this paper we present the experience and results in the teaching of a course titled “Internet Technologies”. This course, offered in Public University of Navarra (Spain), uses a special methodology that combines in-classroom lectures in front of computers with on-line contents. The students work on the on-line course lesson at the same time that the professor is available

  13. Large-scale implementation of on-line calibration monitoring - Issues and possible solutions

    SciTech Connect

    Roverso, D.; Hoffmann, M. [Institutt for Energiteknikk, OECD Halden Reactor Project, POBox 173, NO-1751 Halden (Norway)

    2006-07-01

    Currently available on-line calibration monitoring methods and techniques have demonstrated their suitability in several pilot applications and a few production applications. The fitness of these techniques to tackle large scale, full-fledged, plant-wide applications is still however an open matter. In this paper the main issues that relate to the dimensionality of the on-line calibration monitoring application are identified and a number of prospective solutions to tackle these issues are proposed. (authors)

  14. A decision-theoretic generalization of on-line learning and an application to boosting

    Microsoft Academic Search

    Yoav Freund; Robert E. Schapire

    1995-01-01

    In the first part of the paper we consider the problem of dynamically apportioning resources among a set of options in a worst-case on-line framework. The model we study can be interpreted as a broad, abstract extension of the well-studied on-line prediction model to a general decision-theoretic setting. We show that the multiplicative weight- update LittlestoneWarmuth rule can be adapted

  15. On-line application oriented optimal scheduling for penicillin fed-batch fermentation

    Microsoft Academic Search

    J. Q. Yuan; Y. F. Xue; K. L. Hu; H. T. Wu; Q. Jia

    2009-01-01

    An on-line application oriented scheduling approach for cultivation periods of penicillin fed-batch fermentation is proposed to maximize the economic profit of the whole workshop. The approach consists of profit function calculation, profit potential prediction, on-line batch classification and scheduling decision-making. The objective function is to maximize the total economic profit of those batches in parallel operation by repeated updating of

  16. Multifunctional ultrasonic sensor for on-line tool condition monitoring in turning operations

    Microsoft Academic Search

    T. H. Nayfeh; N. H. Abu-Zahra

    1998-01-01

    Machining operations in automated manufacturing centers are, in general, under-performing by 20--80 percent. Optimizing these machining operations requires on-line knowledge of the cutting tool`s condition and the process state. Currently, this information is either not reliable or not available in a timely manner. This in part is due to the lack of suitable sensors which are able to measure on-line

  17. Study on on-line measurement system of stone slabs based on OpenCV

    Microsoft Academic Search

    Zhao Min; Na Lihong

    2010-01-01

    An on-line measurement system of stone slabs based on CCD technology is constituted by using the CCD camera, image acquisition card, computer and so on. The on-line measurement system for the stone slab is realized by applying camera calibration and image processing algorithms. Under VC++6.0 condition, camera calibration is realized by calling OpenCV1.0 library function and stone slab contour is

  18. International on-line reciprocal peer tutoring to promote modern language development in primary schools

    Microsoft Academic Search

    Allen Thurston; David Duran; Erika Cunningham; Silvia Blanch; Keith Topping

    2009-01-01

    The paper reports data from an on-line peer tutoring project. In the project 78, 9-12-year-old students from Scotland and Catalonia peer tutored each other in English and Spanish via a managed on-line envi- ronment. Significant gains in first language (Catalonian pupils) modern language (Scottish pupils) and attitudes towards modern languages (both Catalonian and Scottish pupils) were reported for the exper-

  19. Environmental controls on plant chemical traits: Using the CAO-VSWIR to characterize patterns in a mediterranean-type ecosystem

    NASA Astrophysics Data System (ADS)

    Dahlin, K.; Asner, G. P.; Field, C. B.

    2012-12-01

    Here we present results from a new imaging spectrometer, the Carnegie Airborne Observatory's (CAO) Visible-Short Wave Infrared (VSWIR) sensor, and we use these data to map key plant functional traits in a semi-arid ecosystem, Jasper Ridge Biological Preserve (Woodside, CA USA). We considered four fundamental plant traits: leaf nitrogen per mass (Nmass, %), leaf carbon per mass (Cmass, %), leaf water fraction (WL), and canopy water fraction (WC).With these maps we ask the following questions: (1) How do these traits vary with environmental gradients and land use history, independent of species composition? (2) Does information about plant community improve our ability to explain trait patterns? And (3) what does the variation within plant communities tell us about the underlying processes driving or limiting this ecosystem? We show that the new CAO-VSWIR combined with partial least squares regression can effectively map these four plant chemical traits across multiple plant functional types (observed v. predicted R2s ranging from 0.55 for WL to 0.84 for Cmass). To consider how these traits varied with environmental gradients we used simultaneous autoregressive modeling and found, in general, that environment and land-use history together explained about a quarter of the variation in each trait, but that information about plant community boundaries dramatically improved our predictive power. While 29 - 44% of the variation in these four traits remained unexplained, when we considered the trait distributions within each plant community we found that most plant communities were sharply peaked (leptokurtic) or near normal, while a few communities were more evenly distributed (platykurtic) for each trait. These results show that, even though environmental gradients play a small but significant role, most of the plant communities at Jasper Ridge are characterized by a narrow range of trait patterns. For the few communities that are highly divergent, possible causal factors include resource limitation, competition, and/or past disturbances.

  20. A Systematic Review of the Mysterious Caterpillar Fungus Ophiocordyceps sinensis in Dong-ChongXiaCao (???? D?ng Chóng Xià C?o) and Related Bioactive Ingredients

    PubMed Central

    Lo, Hui-Chen; Hsieh, Chienyan; Lin, Fang-Yi; Hsu, Tai-Hao

    2013-01-01

    The caterpillar fungus Ophiocordyceps sinensis (syn.† Cordyceps sinensis), which was originally used in traditional Tibetan and Chinese medicine, is called either “yartsa gunbu” or “DongChongXiaCao (???? D?ng Chóng Xià C?o)” (“winter worm-summer grass”), respectively. The extremely high price of DongChongXiaCao, approximately USD $20,000 to 40,000 per kg, has led to it being regarded as “soft gold” in China. The multi-fungi hypothesis has been proposed for DongChongXiaCao; however, Hirsutella sinensis is the anamorph of O. sinensis. In Chinese, the meaning of “DongChongXiaCao” is different for O. sinensis, Cordyceps spp.,‡ and Cordyceps spƒ. Over 30 bioactivities, such as immunomodulatory, antitumor, anti-inflammatory, and antioxidant activities, have been reported for wild DongChongXiaCao and for the mycelia and culture supernatants of O. sinensis. These bioactivities derive from over 20 bioactive ingredients, mainly extracellular polysaccharides, intracellular polysaccharides, cordycepin, adenosine, mannitol, and sterols. Other bioactive components have been found as well, including two peptides (cordymin and myriocin), melanin, lovastatin, ?-aminobutyric acid, and cordysinins. Recently, the bioactivities of O. sinensis were described, and they include antiarteriosclerosis, antidepression, and antiosteoporosis activities, photoprotection, prevention and treatment of bowel injury, promotion of endurance capacity, and learning-memory improvement. H. sinensis has the ability to accelerate leukocyte recovery, stimulate lymphocyte proliferation, antidiabetes, and improve kidney injury. Starting January 1st, 2013, regulation will dictate that one fungus can only have one name, which will end the system of using separate names for anamorphs. The anamorph name “H. sinensis” has changed by the International Code of Nomenclature for algae, fungi, and plants to O. sinensis. PMID:24716152

  1. SkyMouse: A smart interface for astronomical on-line resources and services

    E-print Network

    Chen-Zhou CUI; Hua-Ping SUN; Yong-Heng ZHAO; Yu LUO; Da-Zhi QI

    2007-11-27

    With the development of network and the World Wide Web (WWW), the Internet has been growing and changing dramatically. More and more on-line database systems and different kinds of services are available for astronomy research. How to help users find their way through the jungle of information services becomes an important challenge. Although astronomers have been aware of the importance of interoperability and introduced the concept of Virtual Observatory as a uniform environment for future astronomical on-line resources and services, transparent access to heterogeneous on-line information is still difficult. SkyMouse is a lightweight interface for distributed astronomical on-line resources and services, which is designed and developed by us, i.e., Chinese Virtual Observatory Project. Taking advantage of screen word-capturing technology, different kinds of information systems can be queried through simple mouse actions, and results are returned in a uniform web page. SkyMouse is an easy to use application, aiming to show basic information or to create a comprehensive overview of a specific astronomical object. In this paper current status of on-line resources and services access is reviewed; system architecture, features and functions of SkyMouse are described; challenges for intelligent interface for on-line astronomical resources and services are discussed.

  2. Neutron flux characterisation of MEGAPIE target

    NASA Astrophysics Data System (ADS)

    Chabod, Sébastien; Blandin, Christophe; Chartier, Frédéric; Fioni, Gabriele; Foucher, Yann; Letourneau, Alain; Marie, Frédéric; Toussaint, Jean-Christian

    2006-06-01

    The neutronic performances of the MEGAPIE target will be studied using fission micro-chambers specially designed to stand the severe irradiation conditions of flux and temperature. The absolute neutron flux will be monitored on-line at different positions inside the target in order to studied its spatial and temporal variations. Together with the flux characterisation, actinide incineration potential of such target will be study through 241Am and 237Np isotopes. Prototype fission detectors and electronics have been successfully tested during the past three years at the High Flux Reactor of Laue Langevin Institute. The results of these tests are presented.

  3. Target discovery

    Microsoft Academic Search

    Mark A. Lindsay

    2003-01-01

    Target discovery, which involves the identification and early validation of disease-modifying targets, is an essential first step in the drug discovery pipeline. Indeed, the drive to determine protein function has been stimulated, both in industry and academia, by the completion of the human genome project. In this article, we critically examine the strategies and methodologies used for both the identification

  4. 78 FR 25697 - Notice of Intent To Seek OMB Approval To Collect Information: On-Line Architectural Barriers Act...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-02

    ...On- Line Architectural Barriers Act (ABA) Complaint Form AGENCY: Architectural...On-line Architectural Barriers Act (ABA) Complaint Form. OMB Number: 3014-NEW...complaints under the Architectural Barriers Act (ABA) easier to use, more efficient, and...

  5. 77 FR 74826 - Notice of Intent To Seek OMB Approval To Collect Information: On-Line Architectural Barriers Act...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-18

    ...On- Line Architectural Barriers Act (ABA) Complaint Form AGENCY: Architectural...On-line Architectural Barriers Act (ABA) Complaint Form. OMB Number: 3014-NEW...complaints under the Architectural Barriers Act (ABA) easier to use, more efficient, and...

  6. 7 CFR 52.38b - Statistical sampling procedures for on-line inspection by attributes of processed fruits and...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...sampling procedures for on-line inspection by attributes...Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT...UNDER THE AGRICULTURAL MARKETING ACT OF 1946 AND THE...sampling procedures for on-line inspection by...

  7. 7 CFR 52.38b - Statistical sampling procedures for on-line inspection by attributes of processed fruits and...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...sampling procedures for on-line inspection by attributes...Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT...UNDER THE AGRICULTURAL MARKETING ACT OF 1946 PROCESSED...sampling procedures for on-line inspection by...

  8. 7 CFR 52.38b - Statistical sampling procedures for on-line inspection by attributes of processed fruits and...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...sampling procedures for on-line inspection by attributes...Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT...UNDER THE AGRICULTURAL MARKETING ACT OF 1946 PROCESSED...sampling procedures for on-line inspection by...

  9. 7 CFR 52.38b - Statistical sampling procedures for on-line inspection by attributes of processed fruits and...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...sampling procedures for on-line inspection by attributes...Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT...UNDER THE AGRICULTURAL MARKETING ACT OF 1946 PROCESSED...sampling procedures for on-line inspection by...

  10. 7 CFR 52.38b - Statistical sampling procedures for on-line inspection by attributes of processed fruits and...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...sampling procedures for on-line inspection by attributes...Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT...UNDER THE AGRICULTURAL MARKETING ACT OF 1946 AND THE...sampling procedures for on-line inspection by...

  11. Solid-state Marx based two-switch voltage modulator for the On-Line Isotope Mass Separator accelerator at the European Organization for Nuclear Research

    SciTech Connect

    Redondo, L. M.; Canacsinh, H.; Ferrao, N.; Mendes, C. [Instituto Superior de Engenharia de Lisboa (ISEL), R. Conselheiro Emidio Navarro 1, Lisbon 1959-007 (Portugal); Nuclear Physics Center-Lisbon University (CFNUL), Av. Prof. Gama Pinto 2, Lisbon 1649-003 (Portugal); Silva, J. Fernando [Instituto Superior Tecnico (IST), Universidade Tecnica de Lisboa, Av. Rovisco Pais 1, Lisbon 1049-001 (Portugal); Center for Innovation in Electrical and Energy Engineering-TU Lisbon, Av. Rovisco Pais 1, Lisbon 1049-001 (Portugal); Soares, R. [Nuclear Physics Center--Lisbon University (CFNUL), Av. Prof. Gama Pinto 2, Lisbon 1649-003 (Portugal); ABT Group, TE Department, Site de Prevessin, FR-01631 CERN (Switzerland); Schipper, J.; Fowler, A. [ABT Group, TE Department, Site de Prevessin, FR-01631 CERN (Switzerland)

    2010-07-15

    A new circuit topology is proposed to replace the actual pulse transformer and thyratron based resonant modulator that supplies the 60 kV target potential for the ion acceleration of the On-Line Isotope Mass Separator accelerator, the stability of which is critical for the mass resolution downstream separator, at the European Organization for Nuclear Research. The improved modulator uses two solid-state switches working together, each one based on the Marx generator concept, operating as series and parallel switches, reducing the stress on the series stacked semiconductors, and also as auxiliary pulse generator in order to fulfill the target requirements. Preliminary results of a 10 kV prototype, using 1200 V insulated gate bipolar transistors and capacitors in the solid-state Marx circuits, ten stages each, with an electrical equivalent circuit of the target, are presented, demonstrating both the improved voltage stability and pulse flexibility potential wanted for this new modulator.

  12. Abstract An important principle of the func-tional organization of plant cells is the targeting

    E-print Network

    Zaiane, Osmar R.

    Abstract An important principle of the func- tional organization of plant cells is the targeting, and plant basic secretory proteins (BSP). We have also developed an on-line, Extracytosolic Plant Pro- teins

  13. Test of high density UC targets development at Gatchina for neutron rich radioactive beam facilities

    E-print Network

    Lhersonneau, G; Lanchais, A; Rizzi, V; Tecchio, L.B; Bajeat, O; Essabaa, S; Lau, C; Cheikh Mhamed, M; Roussière, B; Barzakh, A.E; Fedorov, D.V; lonan, A.M; lvanov, V.S; Mezilev, K.A; Moroz, F.V; Orlov, S.YU; Panteleevc, V.N; Volkovc, YU.M; Dubois, M; Eléon, C; Gaubert, G; Jardin, P; Leroy, R; Saint Laurent, M.G; Villari, A.C.C; Stroe, L

    2008-01-01

    Production of on-line mass separator neutron rich isotopes using fission induced by 1 GeV protons on high density uranium carbide has been investigate and results compared with the low density targets yields.

  14. On-Line CORDIC For Generalized Singular Value Decomposition(GSVD)

    NASA Astrophysics Data System (ADS)

    Lee, Jeong-A.; Lang, Tomas

    1989-05-01

    An on-line CORDIC implementation for computing the Generalized Singular Value Decomposition is presented. Among several algorithms, the implementation shown is based on Luk's parallel version for a triangular processor array, using odd-even ordering. To implement GSVD, the CORDIC approach is attractive compared with using conventional arithmetic units, such as square root, divider and multiplier. However, the CORDIC module is relatively slow because of the requirement of full precision computation to determine the direction of the angle and the variable shifter in the basic step. To avoid this, the use of redundant and on-line CORDIC has been proposed previously for SVD and matrix triangularization. This results in a significant speedup at some additional cost because of the variable scaling factor introduced. The extension of on-line CORDIC approach to the GSVD is presented. The advantages of this approach are more significant in GSVD because of the longer sequence of dependent operations. This makes the combination of the short step time of on-line CORDIC and the overlapping capability of on-line very attractive. By comparing it with conventional approach as well as CORDIC approach with full precision computation, we show that a speedup of about 5 can be achieved.

  15. On-line determination and control of fat content in batches of beef trimmings by NIR imaging spectroscopy.

    PubMed

    Wold, J P; O'Farrell, M; Høy, M; Tschudi, J

    2011-11-01

    An NIR imaging scanner was calibrated for on-line determination of the fat content of beef trimmings. A good calibration model was obtained for fat in intact beef (R=0.98, RMSECV=3.0%). The developed model could be used on single pixels to get an image of the fat distribution, or on the average spectrum from each trimming/portion of trimmings passing under the scanner. The fat model gave a rather high prediction error (RMSEP=8.7%) and a correlation of 0.84 when applied to 45 single trimmings with average fat content ranging from 1.6 to 49.3% fat. Test measurements on streams of trimmings making up batches varying from 10 to 24 kg gave a much lower prediction error (RMSEP=1.33%). Simulations based on true measurements indicate that the RMSEP decreases with increasing batch size and, for the present case, reached about 0.6% for 100 kg batches. The NIR scanner was tested on six batches of intact trimmings varying from 145 to 210 kg and gave similar fat estimates as an established microwave system obtained on the ground batches. The proven concept should be applicable to on-line estimation of fat in trimmings in order to determine the batch fat content and also to control the production of batches to different target fat levels. A possible requirement for the concept to work properly is that the trimming or layer of trimmings on the belt is not too thick. In this study maximum thickness was about 8 cm. Thicker trimmings might be measured, but careful hardware adjustments are then required. PMID:21636219

  16. An on-line calibration algorithm for external parameters of visual system based on binocular stereo cameras

    NASA Astrophysics Data System (ADS)

    Wang, Liqiang; Liu, Zhen; Zhang, Zhonghua

    2014-11-01

    Stereo vision is the key in the visual measurement, robot vision, and autonomous navigation. Before performing the system of stereo vision, it needs to calibrate the intrinsic parameters for each camera and the external parameters of the system. In engineering, the intrinsic parameters remain unchanged after calibrating cameras, and the positional relationship between the cameras could be changed because of vibration, knocks and pressures in the vicinity of the railway or motor workshops. Especially for large baselines, even minute changes in translation or rotation can affect the epipolar geometry and scene triangulation to such a degree that visual system becomes disabled. A technology including both real-time examination and on-line recalibration for the external parameters of stereo system becomes particularly important. This paper presents an on-line method for checking and recalibrating the positional relationship between stereo cameras. In epipolar geometry, the external parameters of cameras can be obtained by factorization of the fundamental matrix. Thus, it offers a method to calculate the external camera parameters without any special targets. If the intrinsic camera parameters are known, the external parameters of system can be calculated via a number of random matched points. The process is: (i) estimating the fundamental matrix via the feature point correspondences; (ii) computing the essential matrix from the fundamental matrix; (iii) obtaining the external parameters by decomposition of the essential matrix. In the step of computing the fundamental matrix, the traditional methods are sensitive to noise and cannot ensure the estimation accuracy. We consider the feature distribution situation in the actual scene images and introduce a regional weighted normalization algorithm to improve accuracy of the fundamental matrix estimation. In contrast to traditional algorithms, experiments on simulated data prove that the method improves estimation robustness and accuracy of the fundamental matrix. Finally, we take an experiment for computing the relationship of a pair of stereo cameras to demonstrate accurate performance of the algorithm.

  17. On-line searching: costly or cost effective? A marketing perspective.

    PubMed

    Dunn, R G; Boyle, H F

    1984-05-01

    The value of acquiring and using information is not well understood. Decisions to purchase information are made on the basis of the perceived need for the information, the anticipated benefit of using it, and the price. The current pricing of on-line information services, which emphasizes the connect hour as the unit of price, does not relate the price of a search to the value of a search, and the education programs of on-line vendors and database suppliers concentrate on the mechanics of information retrieval rather than on the application of information to the customer's problem. The on-line information industry needs to adopt a strong marketing orientation that focuses on the needs of customers rather than the needs of suppliers or vendors. PMID:6736141

  18. Research on the Influence of Perceived Risk in Consumer On-line Purchasing Decision

    NASA Astrophysics Data System (ADS)

    Hong, Zhao; Yi, Li

    Perceived risk is an important factor that affects consumer's on-line shopping purchasing decision, through the perceived theories the consumer can know clearly which step owns higher risk in the whole shopping process, then learn how to prevent it, this process also strengthen the consumer confidence, thus lowering to know that the risk adjudicate to the feeling, so the essay has important and realistic meaning for further expand the electronic commerce. At first, investigate, collect, tidy up, analyze the questionnaire information, and thus get the primary data. Finally try to find out the influence of perceived risk to each stage of purchasing decision during consumer on-line shopping process with data and personal analytical. The paper is a complement to the local and existing perceived theories. The result of the study manifests that, the order of main perceived risks which felt by consumer during on-line shopping process are as follow: financial risk, the performance risk and service risk.

  19. On-line electrothermal atomic absorption spectrometry configurations: recent developments and trends

    NASA Astrophysics Data System (ADS)

    Burguera, Marcela; Burguera, Jose Luis

    2007-09-01

    In the present mini-review, an account of the actual state-of-the-art and future possibilities offered by on-line ET-AAS is presented. Topics such as: (1) on-line analyte preconcentration (by means of precipitation, sorption, solvent extraction, and solid phase extraction); (2) analyte separation by means of chromatography, and electrochemical, microdialysis and chemical vapor generation processes; and (3) sample treatment (by microwave sample digestion, sample emulsification and dilution processes) are used to illustrate the versatility of flow injection, sequential injection analysis, stop flow and continuous flow, when coupled to a graphite furnace. The use of some of the on-line systems for speciation and the simultaneous determination of different analytes is underlined.

  20. A new approach to on-line mechanical condenser tube cleaning

    SciTech Connect

    Ulvog, P.C. [T.U. Electric, Tatum, TX (United States)

    1995-06-01

    For many years, condenser biofouling has been difficult to prevent/control. The benefits of maintaining clean condenser tubes to the efficient operation of steam electric power plants include: (1) Prevention of Heat Rate Degradation (2) Extended Condenser Tube Life (3) Elimination of Outages to Clean the Condenser. TU Electric`s Martin Lake Plant has been utilizing an innovative on-line mechanical tube cleaning system since April, 1992 to maintain condenser cleanliness while eliminating the use of chlorine to control biofouling. The system is operated as a tube cleaning service; therefore, no capital investment or plant retrofit was required. The system was installed while the units were operating at base load. The results of the on-line cleaning effectiveness were determined by the EPRI Plant Monitoring Workstation, installed test grade instrumentation, and on-line video borescope tube inspections.

  1. Parallel processing for on-line power system operations -- Survey and prospects

    SciTech Connect

    Ramesh, V.C. [Illinois Inst. of Tech., Chicago, IL (United States). Dept. of Electrical and Computer Engineering

    1996-11-01

    This paper first reviews the state-of-the-art of parallel processing technology which has rapidly evolved over the last two decades, especially the trend towards standardization that has occurred in the last year or two. Then, a survey, of the various approaches proposed for applying parallel processing techniques to power system operations is presented. The focus is on two categories of applications. The first category consists of applications that are currently standard on-line tools that can be further speeded up using parallel processing. The second category is composed of applications that are prevented from being used on-line due to limitations of sequential approaches. The paper concludes with some speculations on the on-line use of this technology in the near future. 60 refs.

  2. On-line coal analysis using fast neutron-induced gamma-rays.

    PubMed

    Lim, C S; Abernethy, D A

    2005-01-01

    On-line measurement of bulk elemental composition is often best achieved with highly penetrative neutron-gamma techniques. CSIRO has developed and implemented one such technique, neutron inelastic-scattering and thermal-capture analysis (NITA). A distinctive feature of NITA is its use of fast neutron sources to generate inelastic scattering reactions, thus exciting gamma-rays from industrially important elements such as carbon and oxygen. A full-scale prototype for on-line coal quality measurement has been tested under simulated industrial conditions. The effect of sample compositional inhomogeneity and stream thickness will be discussed. PMID:16026989

  3. Nicole: New on-line orientation facility at ISOLDE/CERN

    NASA Astrophysics Data System (ADS)

    Eder, R.; Berkers, I.; Brown, D. E.; Grand, I. S.; Hagn, E.; Harding, P.; Hassani, R.; Herzog, P.; Kastelein, B.; Knipper, A.; Marguier, G.; Massao, M.; Ohya, S.; Postma, H.; Prinz, J.; Richard-Serre, C.; Romanski, I.; Schlösser, K.; Stone, N. J.; Vanderpoorten, W.; Vanhaverbeke, J.; Vanneste, L.; Wölfle, T.; Zech, E.

    1990-08-01

    This paper presents off-line and on-line orientation results obtained with the new on line nuclear orientation device NICOLE in CERN. Magnetic moments of187,185Pt g and186Ir m , electric quadrupole moment ratios between Pt isotopes with mass number 185, 187 and 189, the spin of the 2 h isomer of186Ir and a new decay scheme of184Au involving a metastable state are established. The shape variation versus mass number of the Pt isotopes leads to sign change of the spectroscopic quadrupole moment between A=187 and 185.

  4. Line-on-Line Coincidence: A New Type of Epitaxy Found in Organic-Organic Heterolayers

    NASA Astrophysics Data System (ADS)

    Mannsfeld, Stefan C.; Leo, Karl; Fritz, Torsten

    2005-02-01

    We propose a new type of epitaxy, line-on-line coincidence (LOL), which explains the ordering in the organic-organic heterolayer system PTCDA on HBC on graphite. LOL epitaxy is similar to point-on-line coincidence (POL) in the sense that all overlayer molecules lie on parallel, equally spaced lines. The key difference to POL is that these lines are not restricted to primitive lattice lines of the substrate lattice. Potential energy calculations demonstrate that this new type of epitaxy is indeed characterized by a minimum in the overlayer-substrate interaction potential.

  5. REMPI-TOFMS for on-line monitoring and controlling the coffee roasting process

    NASA Astrophysics Data System (ADS)

    Dorfner, Ralph; Ferge, Thomas; Yeretzian, Chahan; Zimmermann, Ralf; Kettrup, Antonius

    2001-08-01

    REMPI@266nm-TOFMS is used for on-line analysis of the coffee roasting process. Volatile and flavor active compounds of coffee were ionized by REMPI@266nm and monitored on-line and in real-time by TOFMS during the coffee roasting process. The phenol and 4-vinylguaiacol time-intensity profiles, for example, show typical behavior for different roasting temperatures and provide an indicator to the achieved degree of roasting. The impact of the moisture level of the green coffee beans on the time shift of a typical (commercial) roasting time, correlates with REMPI-TOFMS measurements and literature data.

  6. Note: On-line weak signal detection via adaptive stochastic resonance

    SciTech Connect

    Lu, Siliang; He, Qingbo, E-mail: qbhe@ustc.edu.cn; Kong, Fanrang [Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230026 (China)

    2014-06-15

    We design an instrument with a novel embedded adaptive stochastic resonance (SR) algorithm that consists of a SR module and a digital zero crossing detection module for on-line weak signal detection in digital signal processing applications. The two modules are responsible for noise filtering and adaptive parameter configuration, respectively. The on-line weak signal detection can be stably achieved in seconds. The prototype instrument exhibits an advance of 20 dB averaged signal-to-noise ratio and 5 times averaged adjust R-square as compared to the input noisy signal, in considering different driving frequencies and noise levels.

  7. MHTGR steam generator on-line heat balance, instrumentation and function

    SciTech Connect

    Klapka, R.E.; Howard, W.W.; Etzel, K.T. (General Atomics, San Diego, CA (United States)); Basol, M.; Karim, N.U. (ABB-CENP, Chattanooga, TN (United States))

    1991-09-01

    Instrumentation is used to measure the Modular High Temperature Gas-Cooled Reactor (MHTGR) steam generator dissimilar metal weld temperature during start-up testing. Additional instrumentation is used to determine an on-line heat balance which is maintained during the 40 year module life. In the process of calibrating the on-line heat balance, the helium flow is adjusted to yield the optimum boiling level in the steam generator relative to the dissimilar metal weld. After calibration is complete the weld temperature measurement is non longer required. The reduced boiling level range results in less restrictive steam generator design constraints.

  8. On-line solid-phase microextraction of triclosan, bisphenol A, chlorophenols, and selected pharmaceuticals in environmental water samples by high-performance liquid chromatography-ultraviolet detection.

    PubMed

    Kim, Dalho; Han, Jungho; Choi, Yongwook

    2013-01-01

    A method using on-line solid-phase microextraction (SPME) on a carbowax-templated fiber followed by liquid chromatography (LC) with ultraviolet (UV) detection was developed for the determination of triclosan in environmental water samples. Along with triclosan, other selected phenolic compounds, bisphenol A, and acidic pharmaceuticals were studied. Previous SPME/LC or stir-bar sorptive extraction/LC-UV for polar analytes showed lack of sensitivity. In this study, the calculated octanol-water distribution coefficient (log D) values of the target analytes at different pH values were used to estimate polarity of the analytes. The lack of sensitivity observed in earlier studies is identified as a lack of desorption by strong polar-polar interactions between analyte and solid-phase. Calculated log D values were useful to understand or predict the interaction between analyte and solid phase. Under the optimized conditions, the method detection limit of selected analytes by using on-line SPME-LC-UV method ranged from 5 to 33 ng L(-1), except for very polar 3-chlorophenol and 2,4-dichlorophenol which was obscured in wastewater samples by an interfering substance. This level of detection represented a remarkable improvement over the conventional existing methods. The on-line SPME-LC-UV method, which did not require derivatization of analytes, was applied to the determination of TCS including phenolic compounds and acidic pharmaceuticals in tap water and river water and municipal wastewater samples. PMID:23086088

  9. MgO and CaO stabilized ZrO 2 thin films obtained by Metal Organic Chemical Vapor Deposition

    Microsoft Academic Search

    Giovanni Carta; Naida El Habra; Gilberto Rossetto; Pierino Zanella; Maurizio Casarin; Davide Barreca; Cinzia Maragno; Eugenio Tondello

    2007-01-01

    Metal Organic Chemical Vapor Deposition of cubic stabilized zirconia was investigated by the addiction of the alkaline-earth oxides MgO and CaO. While Cp2ZrMe2 [(Cp=–C5H5, Me=–CH3)] was used as precursor for ZrO2, two different Mg compounds were tested for the MgO deposition, namely bis-(?5-methylcyclopentadienyl)Mg(II) [(Mg(Cp-Me)2] and bis-(2,2,6,6-tetramethyl-3,5-heptanedionate)(tetramethylethylenediamine)Mg(II) [Mg(tmhd)2·tmeda]. Bis-(2,2,6,6-tetramethyl-3,5-heptanedionate)(triethyleneglycoldimethylether)Ca(II) [Ca(tmhd)2·triglyme] was used for CaO growth. Depositions were carried out on fused

  10. Preparation of CaO as OLED getter material through control of crystal growth of CaCO{sub 3} by block copolymers in aqueous solution

    SciTech Connect

    Park, Jae-Hyung [Department of Chemical Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Oh, Seong-Geun [Department of Chemical Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of)], E-mail: seongoh@hanyang.ac.kr

    2009-01-08

    As the starting materials of organic light-emitting diode (OLED) getter, calcium carbonate (CaCO{sub 3}) particles with various shapes and crystal structures have been successfully prepared with additives (L64 or PEGPG), which contain blocks of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO). These CaCO{sub 3} particles were calcinated into highly crystalline calcium oxide (CaO) nanoparticles with high capacity of water adsorption up to 14.23 wt.%. The CaCO{sub 3} and CaO particles prepared at various conditions were characterized using the field emission scanning electron microscopy (FE-SEM), Fourier transform infrared microscopy (FT-IR), X-ray powder diffraction (XRD), and dynamic vapor sorption (DVS) method.

  11. The Vibrational Frequencies of CaO2, ScO2, and TiO2: A Comparison of Theoretical Methods

    NASA Technical Reports Server (NTRS)

    Rosi, Marzio; Bauschlicher, Charles W., Jr.; Chertihin, George V.; Andrews, Lester; Arnold, James O. (Technical Monitor)

    1997-01-01

    The vibrational frequencies of several states of CaO2, ScO2, and TiO2 are computed at using density functional theory (DFT), the Hatree-Fock approach, second order Moller-Plesset perturbation theory (MP2), and the complete-active-space self-consistent-field theory. Three different functionals are used in the DFT calculations, including two hybrid functionals. The coupled cluster singles and doubles approach including the effect of unlinked triples, determined using perturbation theory, is applied to selected states. The Becke-Perdew 86 functional appears to be the cost effective method of choice, although even this functional does not perform well for one state of CaO2. The MP2 approach is significantly inferior to the DFT approaches.

  12. The effect of Al2O3, CaO, Cr2O3 and MgO on devitrification of silica

    NASA Technical Reports Server (NTRS)

    Zaplatynsky, Isidor

    1988-01-01

    The effect of doping on devitrification of vitreous silica was studied at 1100, 1200, and 1300 C. Dispersion of dopants on a molecular scale was accomplished via a sol-gel technique. All dopants accelerated the devitrification of silica but to different degrees. The most active was CaO followed by MgO, Al2O3, and Cr2O3. Pure silica and silica containing Cr2O3 and Al2O3 devitrified to alpha-cristobalite only, whereas silica doped with CaO and MgO produced alpha-quartz and alpha-cristobalite. It appears that prolonged heat treatment would cause alpha-quartz to transform to alpha-cristobalite.

  13. Role of Y{sub 2}O{sub 3}, CaO, MgO additives on structural and microstructural behavior of zirconia/mullite aggregates

    SciTech Connect

    Mishra, D. K.; Prusty, Sasmita; Mohapatra, B. K.; Singh, S. K.; Behera, S. N. [Advanced Materials Technology Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, Odisha (India); Geological Survey of India, Alandi Road, Pune 411 006, Maharashtra (India); Mineralogy Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, Odisha (India); Advanced Materials Technology Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, Odisha (India); National Institute of Science and Technology (NIST), Berhampur 761 008, Odisha (India)

    2012-07-23

    Zirconia mullite (MUZ), Y{sub 2}O{sub 3}-MUZ, CaO-MUZ and MgO-MUZ composites, synthesized through plasma fusion technique, are becoming important due to their commercial scale of production within five minutes of plasma treatment from sillimanite, zircon and alumina mixture. The X-ray diffraction studies reveal the monoclinic zirconia phase in MUZ composite whereas mixed monoclinic, tetragonal and cubic phases of zirconia have been observed in Y{sub 2}O{sub 3}, CaO, MgO added MUZ composites. The Y{sub 2}O{sub 3}, CaO and MgO additives act as sintering aids to favour the transformation and stabilisation of tetragonal and cubic zirconia phases at room temperature. These additives also play a key role in the development of various forms of microstructure to achieve dense MUZ composites.

  14. Impedance coupling in content-targeted advertising

    Microsoft Academic Search

    Berthier A. Ribeiro-Neto; Marco Cristo; Paulo Braz Golgher; Edleno Silva de Moura

    2005-01-01

    The current boom of the Web is associated with the revenues originated from on-line advertising. While search-based advertising is dominant, the association of ads with a Web page (during user navigation) is becoming increasingly important. In this work, we study the problem of associating ads with a Web page, referred to as content-targeted advertising, from a computer science perspective. We

  15. An Electro-Deposited IrOx Thin Film pH Sensor C. M. Nguyen, H. Cao, W. D. Huang, and J.-C. Chiao

    E-print Network

    Chiao, Jung-Chih

    pH levels with indicators such as neutral red or umbelliferone are limited for in-situ experiments solutions with different pH levels of 2, 4, 7, 10 were used to test the performance. A unit-gain bufferAn Electro-Deposited IrOx Thin Film pH Sensor C. M. Nguyen, H. Cao, W. D. Huang, and J.-C. Chiao

  16. Biomass gasification with steam in fluidized bed: Effectiveness of CaO, MgO, and CaO-MgO for hot raw gas cleaning

    Microsoft Academic Search

    Jesús Delgado; María P. Aznar; José Corella

    1997-01-01

    The upgrading of the raw hot gas from a bubbling fluidized bed biomass gasifier is studied using cheap calcined minerals or rocks downstream from the gasifier. Biomass gasification is made with steam (not air) at 750--780 C and about 0.5--1.0 kg of biomass\\/h. Calcined solids used are dolomite (MgO-CaO), pure calcite (CaO), and pure magnesite (MgO). Variables studied have been

  17. Comparative SO sub 2 reactivity of CaO derived from CaCO sub 3 and Ca(OH) sub 2

    Microsoft Academic Search

    B. K. Gullett; K. R. Bruce; L. O. Beach

    1989-01-01

    In an effort to develop a low-cost retrofit technology for control of sulfur dioxide (SOâ) emissions from coal-fired utility plants, boiler injection of dry calcium-based sorbents to form calcium sulfate (CaSOâ) has been widely studied. The effects of such parameters as injection temperature, sorbent surface area, and SOâ concentration on the reaction between the active species, calcium oxide (CaO), and

  18. A comparison of the chemical composition and bioactive ingredients of the Chinese medicinal mushroom DongChongXiaCao, its counterfeit and mimic, and fermented mycelium of Cordyceps sinensis

    Microsoft Academic Search

    Tai-Hao Hsu; Li-Hua Shiao; Chienyan Hsieh; Der-Ming Chang

    2002-01-01

    The Chinese herbal drug DongChongXiaCao, a medicinal and edible mushroom originating from the fungus Cordyceps sp., has been developed into health foods. Counterfeit and mimic types are frequently found in markets. Mycelial preparations of Cordyceps sinensis, via submerged fermentation, have been commercialized and also named DongChongXiaCao. This investigation endeavours to characterize the proximate composition, amino acid profiles, and contents of

  19. Oxidation Studies of SiAlON/MgAlON Ceramics with Fe2O3 and CaO Impurities, Part I: Kinetics

    NASA Astrophysics Data System (ADS)

    Li, Peng; Zhang, Mei; Teng, Lidong; Seetharaman, Seshadri

    2013-02-01

    T he oxidation behaviors of composites SiAlON/MgAlON phases (?-SiAlON, 15R-SiAlON and MgAlON) synthesized from the residue during the leaching treatment of salt cake and corresponding synthetic samples were investigated in air by thermogravimetric measurements. Combined kinetics, viz. linear law + arctan law + parabolic law, are used to describe the kinetics of oxidation in isothermal mode. The oxidation studies reveal the effects of impurities, namely, Fe2O3 and CaO, present in the salt cake residue. The addition of Fe2O3 results in a lower activation energy and more aggressive oxidation. The addition of CaO caused the shrinkage during the synthesis and liquid formation during the oxidation above 1673 K (1400 °C). The impurities of CaO and Fe2O3 in the leaching residue can result in an aggressive oxidation at low temperature and a protective oxidation at temperatures above the eutectic point.

  20. CaO insulator coatings and self-healing of defects on V-Cr-Ti alloys in liquid lithium system

    SciTech Connect

    Park, J.H.; Kassner, T.F.

    1995-09-01

    Electrically insulating and corrosion-resistant coatings are required at the liquid metal/structural interface in fusion first-wall/blanket applications. Electrical resistance of CaO coatings that were produced on V-5%Cr-5%Ti by exposure of the alloy to liquid Li containing 0.5-85 wt.% dissolved Ca was measured as a function of time at temperatures between 250 and 600{degrees}C. The solute element, Ca in liquid Li, reacted with the alloy substrate at 400-420{degrees}C to produce a CaO coating. Resistance of the coating layer measured in-situ in liquid Li was {approx}10{sup 6} {Omega} at 400{degrees}C. Thermal cycling between 300 and 700{degrees}C changed the coating layer resistance, which followed insulator behavior. These results suggest that thin homogeneous coatings can be produced on variously shaped surfaces by controlling the exposure time, temperature, and composition of the liquid metal. The technique can be applied to various shapes (e.g., inside/outside of tubes, complex geometrical shapes) because the coating is formed by liquid-phase reaction. Examination of the specimens after cooling to room temperature revealed no spallation, but homogeneous crazing cracks were present in the CaO coating. Additional tests to investigate the in-situ self-healing behavior of the cracks indicated that rapid healing occurred at {>=}360{degrees}C.

  1. Acute toxicity of cadmium to fish Labeo rohita and copepod Diaptomus forbesi pre-exposed to CaO and KMnO4.

    PubMed

    Dutta, T K; Kaviraj, A

    2001-03-01

    96-h LC50 values of cadmium (Cd) to fish Labeo rohita and the copepod Diaptomus forbesi, determined by static bioassays, were, respectively, 89.5 and 10.2 mg/l. LC50 values increased significantly when fish pre-exposed to 100-350 mg/l CaO or 0.5-1.5 mg/l KMnO4 for 4 d and the copepod to 20-70 mg/l CaO or 0.25-1.0 mg/l KMnO4 for same period. The LC50 values also increased when the pre-exposure period of CaO was increased to 12 d at concentration 100 mg/l for fish and 20 mg/l for copepod. All fish died when pre-exposed to 1.5 mg/l KMnO4 for 8 d. But LC50 values of Cd to copepod increased when pre-exposure period of 0.5 mg/l KMnO4 was increased from 4 to 8 d. PMID:11272918

  2. Dielectric properties of (CuO, CaO2, and BaO)y/CuTl-1223 composites

    NASA Astrophysics Data System (ADS)

    Mumtaz, M.; Kamran, M.; Nadeem, K.; Jabbar, Abdul; Khan, Nawazish A.; Saleem, Abida; Tajammul Hussain, S.; Kamran, M.

    2013-07-01

    We synthesized (CuO, CaO2, and BaO)y/Cu0.5Tl0.5Ba2Ca2Cu3O10-? (y = 0, 5%, 10%, 15%) composites by solid-state reaction and characterized them by x-ray diffraction, scanning electron microscopy, dc-resistivity, and Fourier transform infrared spectroscopy. Frequency and temperature dependent dielectric properties, such as real and imaginary parts of the dielectric constant, dielectric loss, and ac-conductivity of these composites were studied by capacitance and conductance measurements as a function of frequency (10 kHz to 10 MHz) and temperature (78 to 300 K). X-ray diffraction analysis reveals that the characteristic behavior of the superconductor phase and the structure of Cu0.5Tl0.5Ba2Ca2Cu3O10-? are nearly undisturbed by doping with nanoparticles. Scanning electron microscopy images show the improvement in the intergranular linking between the superconducting grains occurring with increasing nanoparticle concentration. Microcracks are healed up with these nanoparticles, and superconducting volume fraction is also increased. Dielectric properties of these composites strongly depend on the frequency and temperature. Zero resistivity critical temperature and dielectric properties show opposite trends with the addition of nanoparticles to the Cu0.5Tl0.5Ba2Ca2Cu3O10-? superconductor matrix.

  3. From insulator to electride: a theoretical model of nanoporous oxide 12CaO.7Al2O3.

    PubMed

    Sushko, Peter V; Shluger, Alexander L; Hirano, Masahiro; Hosono, Hideo

    2007-01-31

    Recently, a novel inorganic electride stable at room temperatures has been obtained by reducing a complex nanoporous oxide 12CaO.7Al2O3 (C12A7) in a Ca atmosphere (Matsuishi, S.; Toda, Y.; Miyakawa, M.; Hayashi, K.; Kamiya, T.; Hirano, M.; Tanaka, I.; Hosono, H. Science 2003, 301, 626). In this system, up to 2.3 x 1021/cm3 electrons can be accommodated in a three-dimensional network of cages formed by a positively charged oxide framework. We demonstrate theoretically that at all concentrations, ne, the electrons are neither associated with specific atoms nor fully delocalized. At low ne, the electrons are isolated from each other and resemble the color centers in insulating materials. They are well localized in some of the lattice cages and yield strong inhomogeneous lattice distortions that provide polaron-type cage-to-cage electron hopping. As ne increases, the electrons form a denser electron gas and become more evenly spread over all available lattice cages. At sufficiently high ne, the system becomes metallic but still retains partially localized character of the conducting electrons. We describe the nature of the electronic states at the Fermi level and predict the changes in the optical and magnetic properties of this system as a function of ne. PMID:17243831

  4. Preparation and visible emission of Er-doped 12CaO x 7Al2O3 powder.

    PubMed

    Wang, D; Liu, Y X; Liu, Y C; Xu, C S; Shao, C L; Li, X H

    2008-03-01

    Er(3+)-doped 12CaO x 7Al2O3 (C12A7:Er3+) powders were prepared using the sol-gel method. X-ray diffraction, micro-Raman spectra and absorption spectra showed that C12A7:Er3+ powder had been obtained. Sharp and intense Er(3+)-related emission from C12A7:Er3+ powder with different Er3+ concentrations in the visible region at room temperature was investigated by analyzing the local structure of Ca atoms in C12A7, and it revealed that cation sites with low symmetry of the host were beneficial to the photoluminescence of Er3+ ions. The emission lines were attributed to two types of Er3+ centers, isolated Er3+ ions and complex centers formed by aggregation of Er3+ ions. The PL intensity might be affected by free oxygen species relative to Er3+ ions formed by charge compensation. The inverse temperature dependent luminescence from the upper level of 2H11/2 state and that from the lower level of 4S3/2 state implied that the thermalization or thermal equilibrium of electrons between the two closely emission states occurred. PMID:18468174

  5. Strong enhancement of superconductivity in inorganic electride 12CaO·7Al2O3:e- under high pressure

    NASA Astrophysics Data System (ADS)

    Tanaka, Shigeki; Kato, Tomoki; Miyake, Atsushi; Kagayama, Tomoko; Shimizu, Katsuya; Kim, Sung Wng; Matsuishi, Satoru; Hosono, Hideo

    2013-08-01

    We present the results of the pressure dependence of the superconductivity of the inorganic electride 12CaO·7Al2O3:e- (C12A7:e-) single crystal through the ac-susceptibility measurement under high pressure. C12A7:e- has the cage structure and the density of states derived from the cages may play an important role in the superconductivity. The superconducting transition temperature ( T c) is ˜ 0.2 K at ambient pressure and monotonically increases up to 1.79 K at 4.7 GPa. The upper critical field H c2 and - dH c2/ dT at T c, in proportion to the density of states (DOS) at Fermi energy becomes larger under high pressure. The superconductivity in C12A7:e- is mediated by the electron-phonon interaction, and the increase of Tc with pressure may arise from a peak structure of the DOS of cage conduction band.

  6. Photoluminescence of Au - formed in 12CaO · 7Al 2O 3 single crystal by Au +-implantation

    NASA Astrophysics Data System (ADS)

    Miyakawa, M.; Kamioka, H.; Hirano, M.; Kamiya, T.; Hosono, H.

    2006-09-01

    Au + ion implantation with fluences from 1 × 10 14 to 3 × 10 16 cm -2 into 12CaO · 7Al 2O 3 (C12A7) single crystals was carried out at a sample temperature of 600 °C. The implanted sample with the fluence of 1 × 10 15 cm -2 exhibited photoluminescence (PL) bands peaking at ˜3.1 and ˜2.3 eV at ?150 K when excited by He-Cd laser (325 nm). This was the first observation of PL from C12A7. These two PL bands are possibly due to intra-ionic transitions of an Au - ion having the electronic configuration of 6 s2, judged from their similarities to those reported on Au - ions in alkali halides. However, when the concentration of the implanted Au ions exceeded the theoretical maximum value of anions encaged in C12A7 (˜2.3 × 10 21 cm -3), surface plasmon absorption appeared in the optical absorption spectrum, suggesting Au colloids were formed at such high fluences. These observations indicate that negative gold ions are formed in the cages of C12A7 by the Au + implantation if an appropriate fluence is chosen.

  7. Characterization and optical transition in tb-doped 12CaO x 7Al2O3 powders.

    PubMed

    Xue, L L; Liu, Y X; Xu, C S; Liu, Y C; Zhao, C J; Zhang, X T

    2010-03-01

    Tb-doped 12CaO x 7Al2O3 (C12A7:Tb3+) powders with strong green emission were prepared using the sol-gel method. X-ray diffraction, micro-Raman spectra, scanning electron microscopy and absorption spectra showed that C12A7:Tb3+ powders with grain size of 200-300 nm were synthesized. Porous powders could be formed as the concentration of Tb3+ was 5 at%. The absorption band around 209 nm was attributed to the host lattice absorption, and the bands around 255 nm and 274 nm were related to the 4f-5d transitions of Tb3+. The absorption intensity of the visible region was enhanced due to the presence of one 100 nm-diameter hole in every grain of C12A7:Tb3+ powders. The emission spectra showed noticeable influence of Tb-Tb cross relaxation, which favored the green photoluminescence (PL) over the blue PL. The study on the concentration quenching indicated that the energy transfers depopulating the 5D3 and 5D4 levels were assigned to the mechanisms of electric dipole-dipole and exchange interaction, respectively. PMID:20355639

  8. Thermodynamics and kinetics of hydroxide ion formation in 12 CaO x 7 Al2O3.

    PubMed

    Hayashi, Katsuro; Hirano, Masahiro; Hosono, Hideo

    2005-06-23

    We have examined the thermodynamics and kinetics of hydroxide (OH-) ions that formed in cages of 12 CaO x 7 Al2O3 (C12A7) with nanoporous structures. It is confirmed using thermogravimetric-evolved gas analyses (TG-EGA) that hydration in C12A7 is mediated by a reaction between an oxide (O2-) ion in the cage and an H2O molecule in the atmosphere to form two OH- ions in the cages. To simply and exactly quantify the OH- content from infrared absorption measurements of OH-stretching band, we propose a method combined with a thermodynamic analysis, allowing the simultaneous determination of the molar extinction coefficient of the OH-band, enthalpy, and entropy for the hydration. Hydration enthalpy in C12A7 is extremely high compared with other oxides and was enhanced by the marked instability of O2- ion in the cage. Consequently, high solubility of OH- ion is retained up to unusually high temperatures. Furthermore, we determined diffusion coefficients of species relevant to the hydration process and demonstrated that inward diffusion of OH- ions is the rate-determining process. PMID:16852465

  9. Insulator -- polaron conductor -- metal transitions in a complex oxide 12CaO.7Al2O3.

    NASA Astrophysics Data System (ADS)

    Sushko, P.; Shluger, A.; Stoneham, A.; Hayashi, K.; Matsuishi, S.; Hirano, M.; Hosono, H.

    2006-03-01

    Recent experiments have demonstrated that a complex nano-porous oxide 12CaO.7Al2O3 (C12A7) built of positively charged sub-nanometer cages can be converted from a transparent insulator to a transparent conductor by H2 doping followed by UV-light irradiation with 4--4.5 eV photons [1]. This irradiation induces optical absorption bands with maxima at 0.4 eV and 2.8 eV and high concentrations of unpaired electrons. We use ab initio calculations to reveal the mechanism of photo-induced insulator--conductor transition and the role of H atoms in this process and to elucidate the transport properties of the electrons in this system as a function of electron concentration. Our theoretical modeling suggests that at concentration below 10^20 cm-3 electrons are responsible for the polaron type electrical conductivity with the activation energy close to 0.1 eV as well as for the optical absorption at 0.4 eV and 2.8 eV [2]. We demonstrate that, as the electron concentration exceeds 10^20 cm-3, the character of electronic conductivity changes from polaron type to metallic. [1] K. Hayashi et al., Nature 419, 462 (2002). [2] P.V. Sushko, et al., Phys. Rev. Lett. 91, 126401 (2003); P.V. Sushko et al., Appl. Phys. Lett. 86, 092101 (2005).

  10. Photoluminescence from Au ion-implanted nanoporous single-crystal 12CaO•7Al2O3

    NASA Astrophysics Data System (ADS)

    Miyakawa, Masashi; Kamioka, Hayato; Hirano, Masahiro; Kamiya, Toshio; Sushko, Peter V.; Shluger, Alexander L.; Matsunami, Noriaki; Hosono, Hideo

    2006-05-01

    Implantation of Au+ ions into a single crystalline 12CaO•7Al2O3 (C12A7) was performed at high temperatures with fluences from 1×1014 to 3×1016cm-2 . This material is composed of positively charged sub-nanometer-sized cages compensated by extra-framework negatively charged species. The depth profile of concentrations of Au species was analyzed using Rutherford backscattering spectrometry. The measured optical spectra and ab initio embedded cluster calculations show that the implanted Au species are stabilized in the form of negative Au- ions below the fluences of ˜1×1016cm-2 (Au volume concentration of ˜2×1021cm-3 ). These ions are trapped in the cages and exhibit photoluminescence (PL) bands peaking at 3.05 and 2.34eV at temperatures below 150K . At fluences exceeding ˜3×1016cm-2 , the implanted Au atoms form nano-sized clusters. This is manifested in quenching of the PL bands and creation of an optical absorption band at 2.43eV due to the surface plasmon of free carriers in the cluster. The PL bands are attributed to the charge transfer transitions (Au0+e-?Au-) due to recombination of photo-excited electrons (e-) , transiently transferred by ultraviolet excitation into a nearby cages, with Au0 atoms.

  11. Spectroscopic characterization of a multiband complex oxide: Insulating and conducting cement 12CaO·7Al2O3

    NASA Astrophysics Data System (ADS)

    McLeod, J. A.; Buling, A.; Kurmaev, E. Z.; Sushko, P. V.; Neumann, M.; Finkelstein, L. D.; Kim, S.-W.; Hosono, H.; Moewes, A.

    2012-01-01

    Natural 12CaO·7Al2O3 (C12A7) is a wide band gap insulator, but conductivity can be realized by introducing oxygen deficiency. Currently, there are two competing models explaining conductivity in oxygen-deficient C12A7, one involving the electron transfer via a “cage conduction band” inside the nominal band gap, the other involving electron hopping along framework lattice sites. To help resolve this debate, we probe insulating and conducting C12A7 with x-ray emission, x-ray absorption, and x-ray photoemission spectroscopy, which provide a full picture of both the valence and conduction band edges in these materials. These measurements suggest the existence of a narrow conduction band between the main conduction and valence bands common in both conducting and insulating C12A7 and support the theory that free electrons in oxygen-deficient C12A7 occupy the low-energy states of this narrow band. Our measurements are corroborated with density functional theory calculations.

  12. Characterization and luminescence of Eu3+ ions doped 12CaO 7Al2O3 nanopowders.

    PubMed

    Liu, C G; Liu, Y X; Wang, D; Yan, D T; Xu, C S

    2011-11-01

    Eu3+ ions doped 12CaO 7Al2O3 (C12A7) powders with different Eu3+ concentrations were prepared by sol-gel combined with solid state reaction method. The results of XRD and Raman spectra showed that single cubic phase polycrystalline C12A7:Eu3+ powders were prepared. The absorption peaks attributed to f-f transition of Eu3+ ion can be observed, indicating that Eu3+ had been incorporated into C12A7 lattice site. Visible PL peaks around 578, 588, 614 nm were ascribed to 5D0 --> 7FJ (J = 0, 1, 2) transitions of Eu3+ under the excitation of 488 nm line. The PL of C12A7:Eu3+ showed the strongest emission intensity at Eu3+ concentration of 0.5 at%. Two different types of Eu3+ centers were identified by the two lines from 5D0 --> 7F0 transition emission. The doping mechanism of C12A7:Eu3+ might be attributed to Eu3+ ions substitution for two types of Ca2+ lattice sites in C12A7. The temperature dependent PL spectra of Eu-doped C12A7 were measured in the range from 100 to 300 K under the excitation of 488 nm laser line. The PL intensities as a function of temperature were well fitted by using a unified theoretical model, considering thermal activation and nonradiative energy transfer processes. PMID:22413328

  13. Features and mechanism of H- anion emission from 12 CaO x 7 Al2O3 surface.

    PubMed

    Huang, Fan; Li, Jiang; Wang, Lian; Dong, Ting; Tu, Jing; Torimoto, Yoshifumi; Sadakata, Masayoshi; Li, Quanxin

    2005-06-23

    The hydrogen anion (H-) and other anionic species (O-, OH-, e-) in the gas phase, emitted from the synthesized crystal surface of 12 CaO x 7 Al2O3-H- (C12A7-H-), have been observed. The emission intensity of all the anionic species strongly depends on the sample surface temperature and the extraction field. H- has the highest emission branch ratio, and the extraction field can reduce its apparent activation energy. H- emission current at a microA/cm2-level has been achieved, which is about 4 orders of magnitude higher than that obtained from the thermal desorption process of CaH2. The observed anions of H- and OH- are attributed to their migration from the C12A7-H- cages onto the surface [i.e., Y-(cages) --> Y-(surface) --> Y-(gas phase) (Y = H, OH)]. The weak O- and electron emission would both arise from the dissociation of O2-: O2-(surface) --> O-(surface) + e-(surface) --> O-(gas phase) + e-(space). PMID:16852484

  14. Qualitative and quantitative accuracy of CAOS in a standardized in vitro spine model.

    PubMed

    Arand, Markus; Schempf, Michael; Fleiter, Thorsten; Kinzl, Lothar; Gebhard, Florian

    2006-09-01

    Pedicle breach with screw implantation is relatively common. For clinical application of computer-assisted orthopaedic surgery, it is important to quantitatively know the accuracy and localization of any guidance modality. We ascertained the accuracy of computed tomography and C-arm-based navigated drilling versus conventional fluoroscopy using an artificial thoracic and lumbar spine model. The 3.2-mm diameter transpedicle drilling target was the center of a 4-mm steel ball fixed in the anterior left pedicle axis. After drilling, we used computed tomography to verify the position of the steel ball and the canal and visually explored for cortex perforation. Quantitative vector calculation showed computed tomography-based navigation had the greatest accuracy (median, d(thoracic) = 1.4 mm; median, d(lumbar) = 1.8 mm) followed by C-arm navigation (median, d(thoracic) = 2.6 mm; median, d(lumbar) = 2 mm) and the conventional procedure (median, d(thoracic) = 2.2 mm; median, d(lumbar) = 2.7 mm). Visual examination showed a decreased perforation rate in navigated drillings. We found no correlation between pedicle breaches and inaccurate drilling. The data suggest computer-assisted orthopaedic surgery cannot provide sub-millimeter accuracy, and complete prevention of pedicle perforation is not realistic. PMID:16672901

  15. How to Log into On-line Training and Access Employee Training Requirements and History

    E-print Network

    How to Log into On-line Training and Access Employee Training Requirements and History Various was taken. This can be printed out as documentation. How to check another employee's training To the top left of the screen is another link ­ "Check Employee Training". When you click on this link, you

  16. Merging Hypermedia GIS with Spatial On-Line Analytical Processing: Towards Hypermedia SOLAP

    E-print Network

    Systems (GIS) with those of On-Line Analytical Processing (OLAP), paving the way to a new technology(s)), Geographic Hypermedia: Concepts and Systems . accepté #12;information adheres to the way human brains think, charts or photographs), videos, sounds (music and oral narration) and animations (changing maps, objects a

  17. Determining Changes in Students' Perceptions towards Participating in International Activities after Watching On-line Videos

    Microsoft Academic Search

    Wilmara Correa Harder; Thomas H. Bruening

    The use of technology and gadgets in today's society is modifying the way we communicate and gather information. Recently, on-line videos have become very popular among college students. A tremendous effort is being made by colleges of agriculture sciences to internationalize the curricula and educators and administrators struggle to promote study abroad programs among agricultural science students. This study aimed

  18. Modeling On-Line Art Auction Dynamics Using Functional Data Analysis

    Microsoft Academic Search

    Srinivas K. Reddy; Mayukh Dass

    2006-01-01

    In this paper, we examine the price dynamics of on-line art auctions of modern Indian art using functional data analysis. The purpose here is not just to understand what determines the final prices of art objects, but also the price movement during the entire auction. We identify several factors, such as artist characteristics (established or emerging artist; prior sales history),

  19. Continuous On-Line Measurement of Lignin Concentration in Wood Pulp

    E-print Network

    Jeffers, L. A.; Roman, G. W.

    We are working toward the development of an instrument for the continuous, on-line measurement of the lignin concentration in wood pulp. The instrument is based on laser induced fluorescence of the wood pulp and is to be used as a primary sensor...

  20. Analysis and suppression of interference for on-line monitoring of partial discharge of power transformers

    Microsoft Academic Search

    Changchang Wang; Xianlie Jin; T. C. Cheng; Shibo Zhang; Zuzhu Dong; Zhongdong Wang; Du Lin; Deheng Zhu

    1997-01-01

    The key to on-line partial discharge (PD) monitoring of power transformers is how to suppress interference effectively. This paper reports an interference qualitative and quantitative analysis on site using a Fast Fourier Transform (FFT) technique. Various periodic interferences have been found, which emanated from the carrier communication, thyristor switching, and high frequency protection signals of the power system as well

  1. Interference rejection for on-line PD monitoring of power transformers

    Microsoft Academic Search

    Changchang Wang; Xianhe Jin; Weihong Jing; T. C. Cheng; Shibo Zhang; Xuzhu Dong; Zhongdong Wang; Du Lin; Deheng Zhu

    1998-01-01

    The key to on-line partial discharge (PD) monitoring of power transformers is how to suppress interference effectively. This paper reports an interference qualitative and quantitative analysis on site using a Fast Fourier Transform (FFT) technique. Various periodic interferences have been found, which mainly emanated from the carrier communication and thyristor switching. This paper will focus attention on how to use

  2. On-Line Partial Discharge Monitoring and Diagnostic System for Power Transformer

    Microsoft Academic Search

    Du Lin; Lei Jiang; Fuqi Li; Deheng Zhu; Kexiong Tan; Chengqi Wu; Xianhe Jin; Changchang Wang; T. C. Cheng

    2005-01-01

    This paper introduces a computerized on-line partial discharge (PD) monitoring and diagnostic system for transformers. The system, which is already in use in a power station, uses wide-band active transducers and a data acquisition unit with modularized and exchangeable components. The system software is a power equipment monitoring and diagnostic system, which is based on the component object model, and

  3. EPIC Web Browser: On-line access to Ocean Hydrographic and Time Series Data

    NSDL National Science Digital Library

    This site provides on-line access to extensive ocean observations collected by NOAA's Pacific Marine Environmental Laboratory, including hydrographic data, ocean profile data, and time series of oceanographic and near surface atmospheric parameters. The site offers catalog access, metadata, graphical displays, listings, and data download functions.

  4. Design Features of On-Line Anatomy Information Resources: A Comparison with the Digital Anatomist

    E-print Network

    Washington at Seattle, University of

    . In addition to videodisks and CD-ROMs, hundreds of anatomy web sites present Visible Human and other1 Design Features of On-Line Anatomy Information Resources: A Comparison with the Digital Anatomist for learning and teaching anatomy as medical students, and have also examined available anatomy web sites

  5. Wetlands Research Program Technical Report Y-87-1 (on-line edition) Corps of Engineers

    E-print Network

    US Army Corps of Engineers

    Wetlands Research Program Technical Report Y-87-1 (on-line edition) Corps of Engineers Wetlands used as part of the number designating technical reports of research published under the Wetlands;Wetlands Research Program Technical Report Y-87-1 January 1987 Corps of Engineers Wetlands Delineation

  6. Cost Comparison of Manual and On-Line Computerized Literature Searching

    ERIC Educational Resources Information Center

    Elman, Stanley A.

    1975-01-01

    Average searching time for manual searching was found to be 22 hours at a total cost of $250; for on-line searching using the Lockheed DIALOG system it was 45 minutes at a total cost of $47. (Author/PF)

  7. The Cost of On-Line Bibliographic Searching. Technical Report 003-75-01.

    ERIC Educational Resources Information Center

    Cooper, Michael D.; DeWath, Nancy A.

    A cost analysis was made of on-line bibliographic searching in four public libraries in the San Francisco Bay Area using the Lockheed DIALOG system. The study involved monitoring the time that 35 individuals in the libraries spent processing some 411 search requests. The study identified a set of seven tasks that are performed for each request and…

  8. Factors Affecting the Adoption of On-Line Search Services by the Public Library.

    ERIC Educational Resources Information Center

    Ahlgren, Alice E.

    Costs and cost-related factors connected with providing on-line search services through the public library are examined. The examination was based on preliminary results from an on-going evaluation of an experimental program (DIALIB). In the DIALIB experiment Lockheed's DIALOG search service was available to the public through four public…

  9. On-line signature verification method by Laplacian spectral analysis and dynamic time warping

    NASA Astrophysics Data System (ADS)

    Li, Changting; Peng, Liangrui; Liu, Changsong; Ding, Xiaoqing

    2013-12-01

    As smartphones and touch screens are more and more popular, on-line signature verification technology can be used as one of personal identification means for mobile computing. In this paper, a novel Laplacian Spectral Analysis (LSA) based on-line signature verification method is presented and an integration framework of LSA and Dynamic Time Warping (DTW) based methods for practical application is proposed. In LSA based method, a Laplacian matrix is constructed by regarding the on-line signature as a graph. The signature's writing speed information is utilized in the Laplacian matrix of the graph. The eigenvalue spectrum of the Laplacian matrix is analyzed and used for signature verification. The framework to integrate LSA and DTW methods is further proposed. DTW is integrated at two stages. First, it is used to provide stroke matching results for the LSA method to construct the corresponding graph better. Second, the on-line signature verification results by DTW are fused with that of the LSA method. Experimental results on public signature database and practical signature data on mobile phones proved the effectiveness of the proposed method.

  10. The Effect of Computer Anxiety on Price Value Trade-Off in the On-Line

    Microsoft Academic Search

    Rajesh V. Manchanda; Kent B. Monroe

    2003-01-01

    This research adds to the understanding of how consumers' comfort with computers influences their evaluation of prices for goods offered over the Internet. The effect of computer anxiety, under different motivational conditions, on the evaluation of price for a product in an on-line environment was examined with the use of an experimental design. The results indicate that computer anxiety interacts

  11. On-Line Hyperspectral Transmittance Imaging for Internal Defect Detection of Pickling Cucumbers

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Hyperspectral imaging technique under transmittance mode was investigated for detection of internal defect in pickling cucumbers such as carpel suture separation or hollow cucumbers caused by mechanical stress. A prototype of on-line hyperspectral transmittance imaging system was developed for real...

  12. Flexible On-line Assessment and Feedback for Teaching Linear Algebra.

    ERIC Educational Resources Information Center

    Siew, Peg-Foo

    2003-01-01

    Discusses the advantages to using on-line assessment for both the instructor and the learner. Reports on the use of an online assessment tool that provides interactive feedback to students learning linear algebra. Measures success in terms of improved pass rate and students' satisfaction with the flexible learning opportunities that the tool…

  13. Enhancing the effective utilisation of Grid clusters by exploiting on-line performability analysis

    E-print Network

    Gilmore, Stephen

    Enhancing the effective utilisation of Grid clusters by exploiting on-line performability analysis than a continuous time, but discrete state space, Markov chain. 1 Introduction Grid engines on compute clusters such as Beowulfs in order to share computational resources across a number of, pos- sibly

  14. UNIVERSIT DEGLI STUDI DI TORINO ISTRUZIONI PER LA COMPILAZIONE ON LINE DEL PIANO CARRIERA

    E-print Network

    Sproston, Jeremy

    1 UNIVERSITÀ DEGLI STUDI DI TORINO ISTRUZIONI PER LA COMPILAZIONE ON LINE DEL PIANO://www.unito.it Per accedere alla funzionalità di presentazione del piano carriera devi accedere con le credenziali://www.unito.it/unitoWAR/page/istituzionale/istruzioni/P35407898381252672659560. 2. Compilazione del Piano Carriera Effettuato il login accedi al menù Segreteria

  15. Adaptive Backstepping for Uncertain Systems With Time-Delay On-Line Update Laws

    E-print Network

    compliant with adaptive control techniques, is not adapted (see e.g. [2]). In this paper, we apply convergence result for single-input systems. It is illustrated in simulations on the control of the Air of the proposed control algorithm which, with reduced implementation difficulties, reveals sympathetic to on- line

  16. Coupling SFE to uterotonic bioassay: an on-line approach to analysing medicinal plants

    Microsoft Academic Search

    Vikash Sewram; Mark W Raynor; Deshandra M Raidoo; Dulcie A Mulholland

    1998-01-01

    Supercritical fluid extraction has been directly coupled on-line to a uterotonic bioassay, using guinea pig uterine smooth muscle in vitro. This technique was developed for the detection of uterotonic compounds present in medicinal plants used during pregnancy to induce or augment labour. The direct passage of CO2 into the muscle chamber led to adiabatic cooling of the physiological fluid and

  17. Integrated electrochemical sensor array for on-line monitoring of yeast fermentations

    Microsoft Academic Search

    E. E. Krommenhoek; J. G. E. Gardeniers; J. G. Bomer; X. Li; M. Ottens; Dedem van G. W. K; M. Van Leeuwen; Gulik van W. M; Wielen van der L. A. M; J. J. Heijnen; A. van den Berg

    2007-01-01

    This paper describes the design, modeling, and experimental characterization of an electrochemical sensor array for on-line monitoring of fermentor conditions in both miniaturized cell assays and in industrial scale fertnentations. The viable biomass concentration is determined from impedance spectroscopy. As a miniaturized electrode configuration with high cell constant is applied, the spectral conductivity variation is monitored instead of the permittivity

  18. Comparing Modes of Delivery: Classroom and On-Line (and Other) Learning.

    ERIC Educational Resources Information Center

    deLeon, Linda; Killian, Jerri

    2000-01-01

    Moving beyond question of whether on-line education is beneficial or harmful, explores conditions under which one or another of six instructional methods lecture, collaborative learning, experiential learning, learning contracts, televised courses, and Web-based learning work best. Finds specific methods more appropriate for some subject matters,…

  19. DATA DRIVEN DESIGN OF HMM TOPOLOGY FOR ON-LINE HANDWRITING RECOGNITION

    Microsoft Academic Search

    JAY J. LEE; JAHWAN KIM; JIN H. KIM

    2000-01-01

    Although HMM is widely used for on-line handwriting recognition, there is no simple and well- established method of designing the HMM topology. We propose a data-driven systematic method to design HMM topology. Data samples in a single pattern class are structurally simplified into a sequence of straight -line segments, and then these simplified representations of the samples are clustered. An

  20. Bayesian Network Modeling of Strokes and their Relationships for On-line Handwriting Recognition

    Microsoft Academic Search

    Sung J. Cho; Jin-ho Kim

    2001-01-01

    It is important to model strokes and their relationships for on-line handwriting recognition, because they reflect character structures. We propose to model them explicitly and statistically with Bayesian networks. A character is modeled with stroke models and their relationships. Strokes, parts of handwriting traces that are approximately linear, are modeled with a set of point models and their relationships. Points