Sample records for cao target on-line

  1. CAOS spectroscopy of Am stars Kepler targets

    NASA Astrophysics Data System (ADS)

    Catanzaro, G.; Ripepi, V.; Biazzo, K.; Busá, I.; Frasca, A.; Leone, F.; Giarrusso, M.; Munari, M.; Scuderi, S.

    2015-07-01

    The Kepler space mission and its K2 extension provide photometric time series data with unprecedented accuracy. These data challenge our current understanding of the metallic-lined A stars (Am stars) for what concerns the onset of pulsations in their atmospheres. It turns out that the predictions of current diffusion models do not agree with observations. To understand this discrepancy, it is of crucial importance to obtain ground-based spectroscopic observations of Am stars in the Kepler and K2 fields in order to determine the best estimates of the stellar parameters. In this paper, we present a detailed analysis of high-resolution spectroscopic data for seven stars previously classified as Am stars. We determine the effective temperatures, surface gravities, projected rotational velocities, microturbulent velocities and chemical abundances of these stars using spectral synthesis. These spectra were obtained with CAOS, a new instrument recently installed at the observing station of the Catania Astrophysical Observatory on Mt Etna. Three stars have already been observed during quarters Q0-Q17, namely: HD 180347, HD 181206 and HD 185658, while HD 43509 was already observed during K2 C0 campaign. We confirm that HD 43509 and HD 180347 are Am stars, while HD 52403, HD 50766, HD 58246, HD 181206 and HD 185658 are marginal Am stars. By means of non-LTE (local thermodynamic equilibrium) analysis, we derived oxygen abundances from O I ?7771-5 Å triplet and we also discussed the results obtained with both non-LTE and LTE approaches.

  2. Evaluation of an On-line Adaptive Gesture Interface with Command Prediction Xiang Cao, Ravin Balakrishnan

    E-print Network

    Balakrishnan, Ravin

    - ognition with a command predictor. Machine learning techniques enable on-line adaptation to differences]), and has begun to appear in commercial products such as pen based PDA's and tablet computers. How- ever and user performance time. We use standard on-line machine learning techniques to adapt to users' input

  3. First on-line results for As and F beams from HRIBF target/ion sources

    SciTech Connect

    Stracener, D.W. [Joint Inst. for Heavy Ion Research, Oak Ridge, TN (United States); Carter, H.K.; Kormicki, J.; Breitenbach, J.B. [Oak Ridge Inst. for Science and Education, TN (United States); Blackmon, J.C. [North Carolina Univ., Chapel Hill, NC (United States); Smith, M.S. [Oak Ridge National Lab., TN (United States); Bardayan, D.W. [Yale Univ., New Haven, CT (United States). Wright Nuclear Structure Lab.

    1996-12-31

    The first on-line tests of the ion sources to provide radioactive ion beams of {sup 69,70}As and {sup 17,18}F for the Holifield Radioactive Ion Beam Facility (HRIBF) have been performed using the UNISOR facility at HRIBF. The target/ion source is an electron beam plasma (EBP) source similar to the ISOLDE design. The measured efficiencies for {sup 69}As and {sup 70}AS were 0.5 {+-} 0.2% and 0.8 {+-} 0.3%, respectively. The arsenic hold-up time in the tested target ion source was 3.6 {+-} 0.3 hours as measured with {sup 72}As at a target temperature of 1300 {degrees}C. The measured efficiencies for {sup 17}F and {sup 18}F were 0.0052 {+-} 0.0008% and 0.06 {+-} 0.02%, respectively. The source hold-up time for fluorine was measured with Al{sup 18}F since 88% of the observed radioactive fluorine was found in this molecule. The Al{sup 18}F hold-up time was 16.4 {+-} 0.8 minutes at a target temperature of 1470 {degrees}C.

  4. People Tracking in RGB-D Data With On-line Boosted Target Models

    E-print Network

    Arras, Kai O.

    and trajectories of five tracked persons. a fixed pedestrian model. Unlike these works that require a ground planePeople Tracking in RGB-D Data With On-line Boosted Target Models Matthias Luber Luciano Spinello Kai O. Arras Abstract-- People tracking is a key component for robots that are deployed in populated

  5. Probability Park A Database-backed On-line Professional Development Environment Targeting Standards-based School Reform1

    Microsoft Academic Search

    Robby Robson; John Whitesitt

    1999-01-01

    The State of Oregon is undergoing massive standards-based school reform. This has created immediate and wide spread professional development demands. We have piloted an on- line professional development environment that targets probability and statistics standards and is designed to meet these demands in a scalable and cost effective fashion. The environment is called probability park and consists of four parts:

  6. An on-line target transport system for short-lived radioisotopes

    Microsoft Academic Search

    D. W. Holdsworth; D. A. L. Paul

    1985-01-01

    Equipment has been developed to transport self supporting target films in vacuo at high speeds. The targets may be transferred over 3 m in less than 2 s and are gently accelerated and decelerated. In addition, the targets are accurately positioned at each end to within 25 mum. Non-magnetic materials are used throughout and wear is reduced so that 500

  7. On-line modeling for real-time 3D target tracking

    Microsoft Academic Search

    Hans De Ruiter; Beno Benhabib

    2009-01-01

    Model-based object tracking can provide autonomous mobile robotic systems with real-time 6-dof pose information, for example,\\u000a enabling them to rendezvous with targets from a particular desired direction. Most existing model-based trackers, however,\\u000a require the geometric model of the target to be known a priori, which may pose a practical problem in real-world environments.\\u000a This paper presents a novel 3D modeler

  8. THE FIRST TARGET ION SOURCE SYSTEM FOR THE SPIRAL PROJECT: RESULTS OF THE ON LINE TESTS

    E-print Network

    Boyer, Edmond

    and by an extra ohmic heating up to 2000 K to allow a good diffusion of the radioactive atoms. The atoms this interaction, some radioactive atoms are created and diffuse out of the target before entering into an electron the conduction in all directions. Figure I shows a simulation made with a 2 kW Ar primary heam. The conical shape

  9. 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.

  10. UNISOR on-line nuclear orientation facility

    SciTech Connect

    Girit, I.C.; Alton, G.D.; Bingham, C.R.; Carter, H.K.; Simpson, M.L.; Cole, J.D.; Hamilton, J.H.; Kern, B.D.; Krane, K.S.; Zganjar, E.F.

    1987-01-01

    The UNISOR on-line nuclear orientation facility consists of a He/sub 3/-He/sub 4/ dilution refrigerator on line to the isotope separator. Nuclei are implanted directly onto a target foil soldered to the bottom accessed cold finger of the refrigerator. A 1.5 T superconducting magnet polarizes the ferromagnetic target foils and determines the axis of symmetry. Up to eight gamma detectors can be positioned around the refrigerator, each 9 cm from the target. A unique feature of this system is that the k = 4 term in the directional distribution function can be deduced so that a single solution for the mixing ratio can be found.

  11. Coupled Market Behavior Based Financial Crisis Detection Wei Cao, Longbing Cao and Yin Song

    E-print Network

    Cao, Longbing

    Coupled Market Behavior Based Financial Crisis Detection Wei Cao, Longbing Cao and Yin Song Abstract-- Financial crisis detection is a long-standing chal- lenging issue with significant practical, in particular, the nonlinear and dynamic characteristics associated with financial crisis. Most of existing

  12. Tech OnLine

    NSDL National Science Digital Library

    1996-01-01

    Tech OnLine is a veritable haven for electronics engineers and information technology professionals. After completing the free registration process, users have access to live and archived Web casts, online courses, and technical papers. An example of the roughly hour-long Web casts is a touchscreen liquid crystal display design, but this is just one area of many. The site is continually updated with feature articles that cover many different hot topics, including a recent look at fourth generation wireless communications. A discussion forum is also available, but it does not seem to be very active.

  13. 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.

  14. 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.

  15. CSE 513: Distributed Systems Instructor: Guohong Cao

    E-print Network

    Cao, Guohong

    CSE 513: Distributed Systems Instructor: Guohong Cao OÆce, Phone, Email: 310 pond lab, 863 Systems, M. Singhal and N. Shivaratri References: Distributed Systems Concepts and Design, G. Coulouris, J. Course Outline: 1. Architectures of Distributed Systems { System models, networking and inter

  16. LA TEORÍA DEL CAOS EN LA ECONOMÍA

    Microsoft Academic Search

    Fredy H. Wompner G

    2008-01-01

    En el presente trabajo se examinan los conceptos generales al uso sobre el caos. Se catalogan los conceptos clave que pueden ser útiles y que históricamente han conformado una teoría del desorden y su situación actual en diversas publicaciones. Se analiza desde su historia, evolución, principios e implicancias en otras disciplinas como en la economía. En esta dirección se realiza

  17. Ruptura y caos en Timeball de Joel Cano

    E-print Network

    Seda, Laurietz

    1996-10-01

    conceptos del margen, del centro y del 6 LATIN AMERICAN THEATRE REVIEW tiempo. Mediante las ideas básicas que propone la teoría del caos se demuestra aquí cómo esta obra rechaza toda estructura tradicional de orden, tiempo y forma a la misma vez que... pueblo cubano). Puede decirse que la teoría del caos es relativamente nueva. Sin embargo, el caos como tal siempre ha existido. El concepto del caos nace en el siglo XIX cuando Henry Poincaré (al que muchas personas consideran el padre del caos) se...

  18. Updated: 9/10/2013 1 Xinyu (Jason) CAO

    E-print Network

    Levinson, David M.

    Investigator: David Levinson; Investigator: Jason Cao, Yingling Fan, Greg Lindsey, Michael Iacono), MnDOT, $261-motorized traffic, 2011-2013. (Principal Investigator: Greg Lindsey; Investigator: Jason Cao), MnDOT, $99,948. 6, planning, engineering, health, law, and humanities, 2009-2010, (Principal Investigators: Greg Lindsey

  19. Chemometrics/on-line measurements

    SciTech Connect

    O'Rourke, P.E. (Savannah River Lab., Aiken, SC (USA))

    1989-11-01

    The possible future of on-line analytical-quality measurements for improved process control and more timely safeguards measurements is examined in the light of a current project at Savannah River. A measurement system involving a fiber-optic spectrophotometer and the application of mathematical techniques called chemometrics is described.

  20. UNISOR on-line nuclear orientation facility (UNISOR/NOF)

    SciTech Connect

    Girit, I.C.; Alton, G.D.; Bingham, C.R.; Carter, H.K.; Simpson, M.L.; Cole, J.D.; Croft, W.L.; Hamilton, J.H.; Jones, E.F.; Gore, P.M.

    1988-01-01

    The UNISOR on-line nuclear orientation facility (UNISOR/NOF) consists of a /sup 3/He--/sup 4/He dilution refrigerator on line to the isotope separator. Nuclei are implanted directly into a target foil which is soldered to the bottom accessed cold finger of the refrigerator. A 1.5 T superconducting magnet polarizes the ferromagnetic target foils and determines the axis of symmetry. Up to eight gamma detectors can be positioned around the refrigerator, each 9 cm from the target. A unique feature of this system is that the k = 4 term in the directional distribution function can be directly and unambiguously deduced so that a single solution for the mixing ratio can be found. The first on-line experiment at this facility reported here was a study of the decay of the /sup 191/Hg and /sup 193/Hg isotopes. 5 refs., 4 figs., 1 tab.

  1. On-Line Algorithms Johann Hurink

    E-print Network

    Al Hanbali, Ahmad

    1|rj| Cj ­ Definition/Introduction ­ Lower bound Performance Ratio ­ Algorithm DSPT ­ Randomized Algorithm BETA Mini Cour On-Line Algorithms #12;General Introduction · on-line planning can be seenOn-Line Algorithms Johann Hurink University of Twente BETA Mini Cour On-Line Algorithms #12

  2. Dispatch Magazine On-line

    NSDL National Science Digital Library

    Dispatch Magazine On-Line features a variety of information for dispatchers and public safety telecommunicators. Students, teachers, and professionals in this field communicate on this web site through the forum and discuss such topics as dispatch training, policy, and management. Also, under the "Essential Links", visitors will find helpful information about staffing, professional development events, 911 communications, and stress management. There is also a collection of videos, primarily from newscasts, relevant to the dispatch field that address dispatching during 9-11, and possible understaffing in cases of emergency. The "Essential Links" section takes visitors to a host of necessary external resources for dispatchers and telecommunicators, including maps, weather, and disaster information.

  3. 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.

  4. Apodized multilevel diffractive lenses Q. Cao and J. Jahns

    E-print Network

    Jahns, Jürgen

    Apodized multilevel diffractive lenses Q. Cao and J. Jahns Focusing and imaging are everlasting topics in optical science and optical engineering. In the visible spectral region, the focusing can be realized by refractive lenses and/or multi- level diffractive lenses. And in the spectral regions of soft x

  5. Multi-Strategy Integration for Actionable Trading Agents Longbing Cao

    E-print Network

    Cao, Longbing

    Multi-Strategy Integration for Actionable Trading Agents Longbing Cao Faculty of Information Technology, University of Technology, Sydney, Australia lbcao@it.uts.edu.au Abstract Trading agents are very useful for developing and back-testing quality trading strategies to support smart trading actions

  6. Grid Load Balancing Using Intelligent Agents Junwei Cao1

    E-print Network

    Jarvis, Stephen

    - 1 - Grid Load Balancing Using Intelligent Agents Junwei Cao1 , Daniel P. Spooner* , Stephen A grid load balancing. Each agent is a representative of a local grid resource and utilises predictive application performance data and iterative heuristic algorithms to engineer local load balancing across

  7. Video Synchronization and Its Application on Object Xiaochun Cao a

    E-print Network

    Foroosh, Hassan

    of the linear-combination. Caspi and Irani [6] proposed a direct approach to align two surveillance videosVideo Synchronization and Its Application on Object Transfer Xiaochun Cao a , Lin Wu b , Jiangjian Xiao c , Hassan Foroosh d aObjectVideo Inc., Reston, VA 20191, USA bSchool of Computer Science

  8. Un caos perfecto: El cine de Emir Kusturica

    Microsoft Academic Search

    Evelyn ERLIJ

    Desentrañar la vida de este cineasta, capaz de conv ertir el caos en perfección, es una tortura exquisita sólo para quien tenga en el c uerpo una sobredosis de él suficiente como para soportarla. Aunque su nombre ya está inserto en la historia del séptimo arte como el director que más premios ha ganado en el Festival de Cannes, el

  9. 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

  10. On-Line Assessment: What, Why, How.

    ERIC Educational Resources Information Center

    Natal, Dottie

    Recent increases in the speed and accessibility of computers and networks have made it possible to administer tests on-line. On-line assessment can be conducted in a controlled setting, such as a testing center, or distributed over local area networks or the Internet to libraries and student homes, allowing students the flexibility to complete…

  11. On-line power system security analysis

    Microsoft Academic Search

    NEAL BALU; TIMOTHY BERTRAM; A. Bose; V. Brandwajn; G. Cauley; D. Curtice; A. Fouad; L. Fink; M. G. Lauby; B. F. Wollenberg; J. N. Wrubel

    1992-01-01

    A broad overview of on-line power system security analysis is provided, with the intent of identifying areas needing additional research and development. Current approaches to state estimation are reviewed and areas needing improvement, such as external system modeling, are discussed. On-line contingency selection has become practical, particularly for static security. Additional work is necessary to identify better indices of power

  12. On-line Algorithms in Machine Learning

    Microsoft Academic Search

    Avrim Blum

    1996-01-01

    . The areas of On-Line Algorithms and Machine Learning areboth concerned with problems of making decisions about the presentbased only on knowledge of the past. Although these areas differ in termsof their emphasis and the problems typically studied, there are a collectionof results in Computational Learning Theory that fit nicely into the"on-line algorithms" framework. This survey article discusses some of

  13. On-line range prediction system, part 2

    NASA Technical Reports Server (NTRS)

    Levan, Nhan

    1988-01-01

    The on-line range prediction system is designed for providing a prediction of the target range in the case of a laser data dropout. It consists of real time implementation of a Kalman filter on an IBM PC/AT equipped with necessary hardware. The system was set up and tested at Crows Landing in the Fall of 1987. The improvements made on the on-line range prediction system during 1988 are examined. Solutions are proposed and discussed to the several problems encountered during system tests. Then, the improvements made on the filter software are explained, namely, accounting for the time lag and providing data continously. Finally, the ideas are mentioned that can be considered in the future.

  14. Bounded Conjunctive Queries Yang Cao1,2

    E-print Network

    Fan, Wenfei

    Bounded Conjunctive Queries Yang Cao1,2 Wenfei Fan1,2 Tianyu Wo2 Wenyuan Yu3 1 University@act.buaa.edu.cn wyu@fb.com ABSTRACT A query Q is said to be effectively bounded if for all datasets D, there exists a subset DQ of D such that Q(D) = Q(DQ), and the size of DQ and time for fetching DQ are indepen- dent

  15. 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 ...

  16. Water quality for on-line haemodiafiltration.

    PubMed

    Cappelli, G; Perrone, S; Ciuffreda, A

    1998-01-01

    The term 'ultrapure water' is a common way to define water used for on-line treatments: it refers to the absence of chemical, organic and microbiological contamination. To be more accurate in definition, every known and potential contaminant has to be fixed at its limit value. AAMI recommendations and various Pharmacopoeias have set limits for dialysate based on traditional dialysis treatments, but on-line treatments should also be regulated by guidelines for infusion solutions. Modern water treatment technology allows us to obtain a proper chemical quality both for dialysate and infusion solutions in on-line dialysis. Technology alone, however, cannot guarantee adequate microbiological quality if water treatment is not linked to the appropriate maintenance, monitoring, cleaning and sanitizing procedures. On-line dialysis treatments, as well as high-flux dialysis, use the monitor as an on-site pharmaceutical factory where sterilization by filtration forces nephrologists to look for procedures to keep sterile water sterile. PMID:9623524

  17. Experiences with On-Line STEAMPOP

    E-print Network

    Nath, R.; Libby, D. J.; Marcinkowska, A. R.; Skarke, S. C.; Thomasson, M. J.; Worsham, B. A.

    Experiences With On-Line STEAMPOP R. Nath, D. J. Libby, A. R. Marcinkowska, S. C. Skarke, M. J. Thomasson and B. A. Worsham Union Carbide Corporation Houston, Texas ABSTRACT Off-line utility system optimizers for large process plants... realized are intermittent at best. Continuous savings can be realized by converting these programs to on-line mode. This conversion however is nontrivial. , This paper presents a practical approach to thlS converSlon. This approach has been...

  18. Steam catalysis in CaO carbonation under low steam partial pressure

    SciTech Connect

    Yang, S.J.; Xiao, Y.H. [Chinese Academy of Science, Beijing (China)

    2008-06-15

    CaO was widely used to capture CO{sub 2} in direct hydrogen production process, where steam always existed simultaneously. The effect of steam on CaO carbonation performance under low steam partial pressure was investigated using a pressurized thermogravimetric apparatus. The experimental results revealed that steam improved CaO carbonation performance significantly no matter whether Ca(OH){sub 2} was produced or not. At 823 K and 0.5 MPa of steam partial pressure, effect of steam on CaO carbonation performance could not be attributed mainly to production of Ca(OH){sub 2} because the hydration rate of CaO was very slow. The main reason was steam catalysis in CaO carbonation. Enhancement of steam on CaO carbonation performance without Ca(OH){sub 2} production could not be attributed to improvement of steam on the physical property, but to catalytic effect of steam. Effects of CaO precursors, CO{sub 2} partial pressure, steam partial pressure, and temperature with steam addition on CaO carbonation performance were also investigated.

  19. The Einstein on-line service

    E-print Network

    Harris, D E; Andernach, H; Harris, D E; Grant, C S

    1994-01-01

    The Einstein On-Line Service (EOLS) is a simple menu-driven system which provides an intuitive method of querying over one hundred database catalogs. In addition, the EOLS contains over 30 CDROMs of images from the Einstein X-ray Observatory which are available for downloading. The EOLS provides all of our databases to the NASA Astrophysics Data System (ADS) and our documents which describe each table are written in the ADS format. In conjunction with the IAU working group on Radioastronomical Databases, the EOLS serves as an experimental platform for on-line access to radio source catalogs. The number of entries in these catalogs exceeds half a million.

  20. 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.

  1. On line chemical composition of analyzer development

    SciTech Connect

    Not Available

    1992-01-01

    This status report details progress made on the development of an on-line chemical analyzer. Dynamic studies of the distillation column, approval of testing plans, installation of a sample cell and raman analyzer, design of computerized control systems are described. Information on seminars and published papers is also included. (GHH)

  2. 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...

  3. Sea Turtle On-line Bibliography

    E-print Network

    turtles that were experimentally imprinted at #12;PAIS and head-started (HS) in Galveston, Texas from 1978-1988. Turtles were not considered examined for head-start tags unless they were actually inspected by trainedHome Issue Go! Search Sea Turtle On-line Bibliography This article should be cited as: Shaver, D. J

  4. The On-Line Revolution in Libraries

    ERIC Educational Resources Information Center

    Montgomery, K. Leon

    1977-01-01

    Summarizes the major themes of the conference sponsored by the University of Pittsburgh Graduate School of Library and Information Science on the "On Line Revolution in Libraries" in November 1977. Training of librarians and users and funding of the systems are among the topics included. (MBR)

  5. 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

  6. 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

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

    PubMed Central

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

    2015-01-01

    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

  8. On-Line Scheduling on Uniform Multiprocessors

    Microsoft Academic Search

    Shelby Funkt; Joël Goossens; Sanjoy K. Baruah

    2001-01-01

    Each processor in a uniform multiprocessor machine is characterized by a speed or computingcapacity, with the in- terpretation that a job executing on a processor with speed for time units completes units of execution. The on-line scheduling of hard-real-time systems, in which all jobs must complete by specified deadlines, on uniform mul- tiprocessor machines is considered. It is known that

  9. Connecting to On-line Data

    NASA Astrophysics Data System (ADS)

    Eichhorn, G.; Astrophysics Datacenter Executive Committee (ADEC)

    2004-05-01

    The Astrophysics Datacenter Executive Committee (ADEC) is coordinating the development of a system to facilitate the linking to on-line data. This system has three components: 1. Unique dataset identifiers. 2. A verification system for identifiers. 3. Permanent links to on-line data sets. 1. The ADEC has agreed on a naming scheme for data sets that allows for the unique identification of any data set. The ADEC data centers will clearly mark their data with these identifiers to allow the generation of links to these data. 2. Each data center has a utility that can check whether a data set identifier is a valid identifier at that center. A central verifier allows third parties access to these individual verifiers through a single portal. 3. The central verifier also provides permanent links to data sets through a central link forwarding system. This makes it possible to move data sets between data centers while maintaining the permanent links. The ADEC plans to first use this system to implement the linking from the literature to on-line data in a collaboration with the AAS and the University of Chicago Press for the AAS journals.

  10. 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.

  11. Thermal reactions of aromatics with CaO. Technical progress report, April 1-August 31, 1983

    SciTech Connect

    Longwell, J.P.; Lai, C.K.; Williams, G.C.; Peters, W.A.

    1983-11-01

    The pyrolysis of m-cresol and 1-methylanthracene was studied over both CaO and quartz over the temperature range of 350 to 800/sup 0/C. Vapor-phase concentration of the model compound was 5 mole percent for m-cresol and 1.8 mole percent for 1-methylanthracene. The calcium oxide significantly increased the rates and extents of pyrolysis of the aromatics, reducing the temperature for a given amount of conversion by at least 120/sup 0/C. A proposed mechanism for pyrolysis of m-cresol over CaO involves formation of calcium-cresol salts, which then undergo further cracking at temperatures above 500/sup 0/C to yield coke, CO, CH/sub 4/, toluene and C/sub 3/H/sub 6/. Chemical condensation reactions were the predominant reactions observed in the pyrolysis of 1-methylanthracene over CaO. A comparison of the pyrolysis results of 1-methylanthracene with those of 9-methylanthracene (studied earlier) indicated that the 1-methyl isomer was slightly less reactive over both solids, and that some of the thermal reactions over CaO were also structure specific. Deactivation of CaO was studied by measuring loss of cumulative cracking activity during pyrolysis of 1-methylanthracene. The decay of CaO activity with overall utilization time (or cumulative amount of feed reacted), was well-fitted by a power-law model. Coke burnoff in O/sub 2/ at temperatures between 600-700/sup 0/C regenerated approx.80 percent of the CaO initial activity. The 20 percent loss is attributed to either formation of CaCO/sub 3/ from the CaO or sintering of the CaO particles during regeneration. 7 refs., 11 figs., 1 tab.

  12. 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.

  13. 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.

  14. 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.

  15. Dairy Herd On-line Information System

    NASA Astrophysics Data System (ADS)

    Takahashi, Satoshi

    As the business circumstances have become worse, computational breeding management based on the scientific matters has been needed for dairy farming in our country. In this connection it was urgent to construct the system which provided data effectively used in the fields for dairy farmers. The Federation has executed to provide dairy farming technical data promptly through its own on-line network being composed of middle sized general-purpose computer (main memory : 5MB, and fixed disk : 1100MB) and 22 terminals.

  16. 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.

  17. An On-Line Look at Automatic Contrast and Correction of Behavior Categorizations and Dispositional Inferences

    Microsoft Academic Search

    Stephanie J. Tobin; Gifford Weary

    2003-01-01

    The current study examined on-line behavior recategorization as a mechanism underlying corrections for contextual influences in dispositional inferences. After watching an initial comparison video that portrayed either a successful or unsuccessful perfor- mance on a spatial ability task, cognitive load and no load par- ticipants watched and made real-time ratings of a target perfor- mance. The comparison video was expected

  18. Application of singular perturbation techniques (SPT) and continuation methods for on-line aircraft trajectory optimization

    Microsoft Academic Search

    R. B. Washburn; R. K. Mehra; S. Sajan

    1978-01-01

    The singular perturbation theory (SPT) approximation of optimal feedback control laws is presented and methods for on-line application of these approximations are discussed. It is shown that SPT control laws break down when the current state is near the terminal target state. The use of continuation methods to improve the accuracy of the SPT approximation and to obtain global solutions

  19. Posture control by on-line learning using CMAC for electric wheelchairs

    Microsoft Academic Search

    Shoichiro FUJISAWA; Kouhei AKAZAWA; Ryota KuROZUMI; K. Kawada; T. Yamamoto; H. Uenaka

    2003-01-01

    We developed a posture control system for an electric wheelchair equipped with active suspension, using CMAC, which is a neural network type of control. Testing of the posture control of the wheelchair, which considers a learning results as an output to the target value inputted on-line using the learning function of CMAC (cerebellar model arithmetic controller), was performed. In this

  20. Variations in Compressive Strength of Geopolymer due to the CaO Added Fly Ash

    NASA Astrophysics Data System (ADS)

    Zhao, Yuqing; Koumoto, Tatsuya; Kondo, Fumiyoshi

    Recently, geopolymer has been a noteworthy material which can be used as a replacement for portland cement. The mechanical characteristics and consistency of the geopolymer are strongly affected by its chemical components of fly ash. The variations in compressive strength of geopolymer due to the CaO added fly ash were investigated in this paper. The compressive strengths of geopolymer were increased with an increase in the curing period, and the characteristics changed from the one of plastic soil material to brittle material such as concrete, regardless of CaO content. Also, the results of compressive strength and modulus of deformation showed their maximum value in the case of 8-10% CaO content. From this result, the maximum characteristics of the strengths were assumed to be exerted in case which the water draining process of geopolymer was balanced with the water absorbing process of additional CaO.

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

    E-print Network

    Cao, Longbing

    in- telligence, network and web intelligence, organizational intelligence, and social intelligence intelligence, ­ Human intelligence, ­ Domain intelligence, ­ Network intelligence, ­ OrganizationalUbiquitous Intelligence in Agent Mining Longbing Cao, Dan Luo, and Chengqi Zhang Faculty

  2. Physical Interference Driven Dynamic Spectrum Lei Yang, Lili Cao and Heather Zheng

    E-print Network

    Almeroth, Kevin C.

    Physical Interference Driven Dynamic Spectrum Management Lei Yang, Lili Cao and Heather Zheng and difficult process. Current proposals make the problem tractable by simplifying interference con- straints as conflict graphs, but they face potential performance degradation from inaccurate interference estimation

  3. Sensitivity Analysis of Discrete Stochastic Systems Rudiyanto Gunawan,* Yang Cao,y

    E-print Network

    Cao, Yang

    Sensitivity Analysis of Discrete Stochastic Systems Rudiyanto Gunawan,* Yang Cao,y Linda Petzold, University of California, Santa Barbara, California ABSTRACT Sensitivity analysis quantifies the dependence of system behavior on the parameters that affect the process dynamics. Classical sensitivity analysis

  4. 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.

  5. University of British Columbia: Fish On Line

    NSDL National Science Digital Library

    Hosted by the University of British Columbia, this website contains Fish On Line, a draft guide for teaching and learning about ichthyology. The "guide provides a structure and case study material for a computer-based course in ichthyology for upper undergraduates and graduate students in biology or environmental science. The key resource made accessible through this guide is FishBase, a large database on the biology of fish, available on CD-ROM (for Windows operating system) and on the Internet (www.fishbase.org/search.cfm)." The site provides brief introductory sections to the field of ichthyology and to FishBase, as well as chapters on Evolution, Morphology, Reproduction, and more. The site also offers supplementary exercises accompanying each chapter, and an extensive list of related links.

  6. 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.

  7. On-line laser detection of gases

    SciTech Connect

    Harbert, F.C.

    1983-01-01

    Petrochemical plants, platforms, refineries, etc, can now be surveyed by a laser instrument which responds to and measures gases in the beam. Scanning with the beam, which can be up to 1 km in length, permits a complete plant to be covered with a single instrument. Another application uses and instrument mounted on a vehicle or an aircraft moving along a pipeline searching for gas leaks. The use of lasers permits the detection of gases on-line. A laser operating at the required wavelength produces a beam which surveys the plant; some of the infrared light is scattered form the ground onto a detector adjacent to the laser. Any gas in the beam causes the signal at the detector to fall. Accuracies corresponding to +/- 1.0 ppm can be achieved with response times of 10 milliseconds. (JMT)

  8. On-line assessment of comprehension processes.

    PubMed

    Martínez, Tomás; Vidal-Abarca, Eduardo; Gil, Laura; Gilabert, Ramiro

    2009-05-01

    In this paper we describe a new version of a former paper-and-pencil standardized comprehension test called Test of Comprehension Processes (Vidal-Abarca, Gilabert, Martínez, & Sellés, 2007). The new version has been adapted to a computer-based environment based on the moving window technique. It can be used to assess comprehension strategies of students from fifth to tenth grades (11- to 16-years-old). Comprehension strategies are registered on-line using reading times and visits to relevant sections of the text during the question-answering process. Data show that the computer-based version draws similar results to those provided by the paper-and-pencil version. In addition, we identify the particular strategies deployed during the question-answering process by high, medium and low comprehenders. PMID:19476242

  9. 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.

  10. 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.

  11. 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.

  12. An on-line human signature verification system 

    E-print Network

    Simsek, Burc A

    2000-01-01

    A study on human signature verification is presented. A literature survey of current and past methodologies for on-line signature verification is followed by a new approach to the problem of on-line signature verification. Several novel approaches...

  13. Networks for On-Line Data Base Access

    ERIC Educational Resources Information Center

    Williams, Martha E.

    1977-01-01

    This paper discusses network sharing of resources for on-line data base searching. Uses of on-line searching, equipment, personnel, search strategy development requirements, costs, and advantages of such services are also considered. (Author/KP)

  14. Removal of Fluoride from Aqueous Solution by CaO Nanoparticles

    Microsoft Academic Search

    Gaurang Patel; Usha Pal; Shobhana Menon

    2009-01-01

    Colloidal particles of CaO were synthesized by the sol-gel method. The particle morphology was characterized by FT-IR, TGA, DTA, and TEM analysis. The ability of the CaO nanoparticles for removal of fluoride from aqueous solution through adsorption has been investigated. All the experiments were carried out by batch mode. The effect of various parameters viz. contact time, pH effect (pH

  15. Auditing disclosure risks of on-line broker-dealers

    Microsoft Academic Search

    Huong Ngo Higgins

    2002-01-01

    This paper discusses disclosures required of on-line broker-dealers, and recommends various internal measures that on-line broker-dealers should take to comply with securities trading regulations. On-line trading is transforming the relationship between investors and broker-dealers. While the services offered by on-line broker-dealers may be different from those offered by full-service brokers, the differences are diminishing, and both activities are subject to

  16. 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…

  17. 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

  18. Index Access to On-Line Records: An Operational View.

    ERIC Educational Resources Information Center

    Furlong, Elizebeth J.

    1978-01-01

    Describes operational use of on-line field access, a powerful improvement upon search key access to on-line records and a viable alternative to full key word access; and discusses some of the questions considered at Northwestern University Library during a redesign of the technical services modules of the Northwestern On-Line Intergrated System…

  19. An Evaluation of On-Line Information Retrieval System Techniques.

    ERIC Educational Resources Information Center

    Wolfe, Theodore

    This report presents a review and evaluation of three remote access on-line information retrieval systems and some ideas on what the capabilities of an ideal on-line information retrieval system should be. The three systems reviewed are the DDC Remote On-Line Retrieval System, the National Aeronautics and Space Administration RECON System, and the…

  20. Thermal reactions of aromatics with CaO. Final report. [1-Methylanthracene, 9-methylanthracene

    SciTech Connect

    Longwell, J.P.; Ellig, D.L.; Lai, C.K.; Mead, D.W.; Williams, G.C.; Peters, W.A.

    1985-05-01

    The pyrolysis of benzene, toluene, 1-methylnaphthalene, 1-methylanthracene, 9-methylanthracene, m-cresol, and n-heptane was studied over CaO and quartz in a fixed-bed reactor under atmosphere pressure. The reaction temperature spanned the range of 350 to 900/sup 0/C with vapor phase residence time kept between 1 and 2 seconds. Compared to quartz, CaO significantly increased the rates and extents of pyrolysis of the aromatic hydrocarbons, reducing the temperature for a given amount of conversion by at least 100/sup 0/C. The magnitude of this enhancement effect increased with increasing aromaticity, or molecular size, of the compounds. For the light aliphatic, n-heptane, the effect of CaO is minor, with pyrolysis results similar to those observed over quartz and in vapor phase cracking. Coke was the major product for pyrolysis of aromatic compounds over either solid. Detailed examination of the distribution of the volatile products suggests that: (1) condensation reactions were the major pyrolysis reactions over CaO, and (2) some of the active sites on the CaO surface may be related to anion defects in the CaO lattice. CaO deactivation studies show that coke deposits from pyrolysis quickly destroy the CaO activity. Oxygen burnoff of the coke at temperatures between 650 and 800/sup 0/C regenerated 70 to 80% of the initial CaO activity. Pyrolysis of m-cresol on CaO surfaces exhibited acid-base behavior over the temperature range 0 to 550/sup 0/C. The initial pyrolysis rate was rapid but formation of calcium salts of cresol, which have much larger molar volumes than the substrate limited the accessibility of reactant gas to the inner unreacted surface, thus drastically reducing the overall rate of conversion with increasing stone utilization. At temperatures above 550/sup 0/C, these calcium salts decomposed to yield coke, CO, H/sub 2/O and other light hydrocarbon gases. 20 refs., 26 figs., 4 tabs.

  1. 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

  2. Mediterranean lifestyle: nutritional education on-line.

    PubMed

    del Balzo, V; Scanu, A; Dernini, S; Palmieri, O; Cannella, C

    2009-01-01

    Our goal is to spread on-line the Italian Weekly Pyramid, a tool designed to convey both portion size and frequency of food intake. The Pyramid is referring to the "Well-being Index" (WI) as a unit for an adequate lifestyle. The user can verify his weekly lifestyle by participating to a "game" based on food/beverages consumption and time assigned to physical activity. The site has been visited by 15920 individuals, of whom 4033 completed the game. Self-selected sample, not representative of the Italian population. The data collected included WI consumption by gender for each food group compared to WI suggested. Statistical data evaluation has been performed with the SPSS inc.13 program, without applying any statistical significance to the results. The sample showed a varied eating pattern; all the food groups were consumed almost daily, albeit in much lower quantities with regards to the suggested WI. Fruit and vegetable consumption was higher in women, while men showed a higher intake of meat and cut meats. The percentage of the participants consuming more WI with respect to the recommended amounts was very low for fruit, vegetable, pasta and bread, while was much higher as regards energy dense food. PMID:20169828

  3. 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.

  4. On-line measurement of pulverized coal

    SciTech Connect

    Earley, D.

    2000-07-01

    Coal-fired electric utilities consistently struggle with attempts to improve overall plant performance by achieving optimum combustion. while many techniques are employed, little has been done to optimize combustion at the individual burners. Distribution of windbox airflow and pulverized coal flow can vary greatly. There has been no effective method to measure coal and air, and the utility industry continues to accept these performance inadequacies. In the age of deregulation and with increasing concerns over emissions, the utility industry continues to search for better methods of fuel and airflow measurement and control. This is especially true with the use of low NO{sub x} burners, which require accurate airflow and fuel balance for optimum reduction of NO{sub x} while simultaneously minimizing unburned carbon. In 1997, a large Utility in Germany tested the use of a new coal flow measuring device which utilizes low frequency microwaves to accurately measure the absolute mass flow in coal pipes. When applied to coal outlets from a pulverizer, this device can accurately measure coal flow distribution form pipe-to-pipe. This device has successfully proven its ability to measure coal flow distribution with no maintenance drift problems. Based on the device's success on one mill, the Utility elected to equip all of the pipes on one boiler at this station. Secondary air (SA) is individually ducted to each burner on this boiler (unlike SA in the US); the plant will control airflow to account for fuel imbalances on-line in an attempt to increase plant efficiency by reducing excess oxygen.

  5. Combined effects of Fenton peroxidation and CaO conditioning on sewage sludge thermal drying.

    PubMed

    Liu, Huan; Liu, Peng; Hu, Hongyun; Zhang, Qiang; Wu, Zhenyu; Yang, Jiakuan; Yao, Hong

    2014-12-01

    Joint application of Fenton's reagent and CaO can dramatically enhance sludge dewaterability, thus are also likely to affect subsequent thermal drying process. This study investigated the synergistic effects of the two conditioners on the thermal drying behavior of sewage sludge and the emission characteristics of main sulfur-/nitrogen-containing gases. According to the results, Fenton peroxidation combined with CaO conditioning efficiently promoted sludge heat transfer, reduced the amounts of both free and bound water, and created porous structure in solids to provide evaporation channels, thus producing significant positive effects on sludge drying performance. In this case, the required time for drying was shortened to one-third. Additionally, joint usage of Fenton's reagent and CaO did not increase the losses of organic matter during sludge drying process. Meanwhile, they facilitated the formation of sulfate and sulfonic acid/sulfone, leading to sulfur retention in dried sludge. Both of Fenton peroxidation and CaO conditioning promoted the oxidation, decomposition, and/or dissolution of protein and inorganic nitrogen in sludge pre-treatment. As a consequence, the emissions of sulfurous and nitrogenous gases from dewatered sludge drying were greatly suppressed. These indicate that combining Fenton peroxidation with CaO conditioning is a promising strategy to improve drying efficiency of sewage sludge and to control sulfur and nitrogen contaminants during sludge thermal drying process. PMID:25289973

  6. 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

  7. ON-LINE MAXIMUM INDEPENDENT SET IN CHORDAL GRAPHS

    Microsoft Academic Search

    George CHRISTODOULOU; Vassilis ZISSIMOPOULOS

    In this paper we deal with the on-line maximum independent set and we propose a probabilistic O(logn)-competitive algorithm for chordal and interval graphs, proving that the same ratio is a lower bound of the problem. The relation of the on-line maximum independent set with the on-line admis- sion control, allows us to obtain as particular case, an O(logn)-competitive algorithm for

  8. Industrial on-line bulk analysis using nuclear techniques

    Microsoft Academic Search

    G. Vourvopoulos

    1991-01-01

    The industrial need for on-line determination of various parameters such as ash content, concentrations of slagging elements (Al, Ca, Si, Fe), concentration of environmentally hazardous S etc., has led into the development of several on-line nuclear techniques. Characteristic examples of these techniques along with their successes and limitations are presented. The need to determine on-line the concentration of a number

  9. On-line learning processes in artificial neural networks

    Microsoft Academic Search

    Tom M. Heskes; Bert Kappen

    1993-01-01

    We study on-line learning processes in artificial neural networks from a general pointof view. On-line learning means that a learning step takes place at each presentation of arandomly drawn training pattern. It can be viewed as a stochastic process governed by acontinuous-time master equation.On-line learning is necessary if not all training patterns are available all the time. Thisoccurs in many

  10. On Bayes methods for on-line Boolean prediction

    Microsoft Academic Search

    Nicolò Cesa-Bianchi; David P. Helmbold; Sandra Panizza

    1996-01-01

    This paper proposes a general framework, based on weighting schemes, within which the Bayes method applied to boolean on-line prediction can restudied. Weshow generalboundson thenumber ofprediction mistakes for Bayes method. Specific instances ofour bounds match bounds previously shown for different on-line prediction algorithms proposed in the past. Our framework is also applied to derive and analyze new on-line prediction algorithms.

  11. An on-line interactive interviewing program for epidemiological studies.

    PubMed

    Kramer, S; Caplan, I; Sessions, R; Meadows, A T

    1984-04-01

    An on-line interactive verification and entry system (OLIVES) has been developed for conducting telephone interviews in large-scale epidemiological studies. Responses are automatically coded into a computer legible form suitable for analysis. Use of a question stack to control question flow allows on-line response modification, restart from any termination point, and minimal reprogramming in order to change question order. Numerical, coded, and text string data types are permitted. A multilevel hierarchical data structure reflects interview content. The advantages and disadvantages of the on-line approach are discussed. OLIVES is generalizable and is applicable to other on-line or off-line interview situations. PMID:6736817

  12. 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

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

    Microsoft Academic Search

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

    2002-01-01

    This poster describes the results of a 500 million packet trace of a popular on-line, multiplayer, 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 (i.e. 56k modems). Specifically, in order to

  14. 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 by grain growth and interface barrier Appl. Phys. Lett. 99, 212105 (2011) Strain control of orbital;Thermodynamics of strained vanadium dioxide single crystals Yijia Gu,1,a Jinbo Cao,2 Junqiao Wu,2 and Long

  15. Chlorophyll antenna size adjustments by irradiance in Dunaliella salina involve coordinate regulation of chlorophyll a oxygenase (CAO)

    E-print Network

    ) regulation of both CAO and Lhcb gene expression by irradiance. Inhibitor studies and transient activation regulation of chlorophyll a oxygenase (CAO) and Lhcb gene expression Tatsuru Masuda, Ayumi Tanaka, Anastasios addressed the regulation of expression of genes encoding a variety of chlorophyll biosynthesis enzymes

  16. On line partial discharge diagnosis of power cables

    Microsoft Academic Search

    G. C. Montanari

    2009-01-01

    This paper has the purpose to address in a practical way the topic of PD testing HV cables, with emphasis on on-line measurements and diagnostic interpretations. For this purpose, FAQ are discussed and examples reported of advantages and limitations of on-line PD testing.

  17. Nuclear orientation techniques applied to on-line separated isotopes

    Microsoft Academic Search

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

    1987-01-01

    Recent advances using the on-line nuclear orientation facility KOOL are described. Examples are given from results on nuclear moments, spins and multipolarities in different regions of the nuclear chart. The first on-line nuclear magnetic resonance results are discussed, as well as the first particle anisotropy measurements. Each one of these technical improvements is shown to lead to substantial increase of

  18. 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

  19. On-line Load Balancing Yossi Azar1

    E-print Network

    Azar, Yossi

    On-line Load Balancing Yossi Azar1 Dept. of Computer Science, Tel-Aviv University. ? Abstract. We survey on-line load balancing on various models. 1 Introduction General: The machine load balancing); the tasks arrive at arbitrary times, where each task has an associated load vector and duration. A task has

  20. 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 02138 Email: Makhoul@bbn.com ABSTRACT A hidden Markov model (HMM) based continuous speech recognition between the continuous speech and on-line cursive handwriting recognition tasks are explored; the handwrit

  1. Application Forms & Deadlines PFAA Submit on-line by

    E-print Network

    Application Forms & Deadlines PFAA ­ Submit on-line by May 1, 2014 FAFSA ­ File on-line by April 20 specific guidance on completing the PFAA. 2. The Free Application for Federal Student Aid (FAFSA) US citizens or permanent residents are required to file the FAFSA. You may go to www.fafsa.ed.gov to complete

  2. Next Generation On-Line Dynamic Security Assessment

    E-print Network

    Next Generation On-Line Dynamic Security Assessment Parts III and IV Final Project Report Power;Next Generation On-Line Dynamic Security Assessment Parts III and IV Final Project Report Parts III Ames, IA 50011 Tel: 515-294-4844 Fax: 515-294-4267 Email: jdm@iastate.edu Power Systems Engineering

  3. On-Line Information Retrieval Using Associative Indexing. Final Report.

    ERIC Educational Resources Information Center

    Borko, Harold; And Others

    Experiments were performed to determine the feasibility of using ALCAPP as one form of on-line dialogue. Assuming the ALCAPP (Automatic List Classification and Profile Production) system is in an on-line mode, investigations of those parameters which could affect its stability and reliability were conducted. Fifty-two full test documents were used…

  4. On-line construction of position heaps Gregory Kucherov

    E-print Network

    Paris-Sud XI, Université de

    On-line construction of position heaps Gregory Kucherov Abstract We propose a simple linear-time on-line algorithm for constructing a po- sition heap for a string [EMOW11]. Our definition of position heap differs order of length. Our construction is based on classic suffix pointers and resembles the Ukkonen

  5. Prototype Selection Methods for On-line HWR Jakob Sternby

    E-print Network

    Paris-Sud XI, Université de

    Prototype Selection Methods for On-line HWR Jakob Sternby jakob@maths.lth.se Centre is normally comparatively scarce for on-line Chinese characters and therefore prototype se- lection methods such as DP-matching are powerful methods for character recognition problems with very large number of classes

  6. 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…

  7. 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

  8. On-Line Serials Control in a Consortium Setting.

    ERIC Educational Resources Information Center

    Loepprich, Joyce

    The Medical Sciences Library of the University of California, Irvine acquired an on-line serials control system quickly and at low cost by entering into a consortium with the University of California, Los Angeles Biomedical Library, whose on-line serials system has been in existence and operating successfully for four years. The conversion was…

  9. Integrated Tools for On-Line Professor Chris Jesshope

    E-print Network

    Jesshope, Chris

    ;Flexible delivery The following modes of studying will be supported in Tile: On-line with local server application I material mostly from CD or DVD I the student still has access to the education provider's on-line archive I local information can be updated from this source. Off-line with local server application I

  10. The Challenge of Developing On-Line Courses.

    ERIC Educational Resources Information Center

    Auter, Philip J.; Hanna, Michael S.

    Many challenges face the communication instructor wishing to use the Internet, the World Wide Web, and other on-line resources in the classroom; most common are questions of faculty support, facilities limitations, and student limitations. While some members of communication departments may speak glowingly about the future of the on-line…

  11. On line Release Simulator of Radioactive Beams produced by ISOL technique

    SciTech Connect

    Turrion, Manuela; Tengblad, Olof; Borge, Maria J. G.; Reillo, Eva; Morrissey, Edward R. [Instituto de Estructura de la Materia, CSIC, 28006 Madrid (Spain); Santana, Mario [CERN, Dep. AB-ATB, 1211-Geneva 23 (Switzerland)

    2007-02-12

    Target and ion source constitute the heart for the production of radioactive ion beams, RIBs. The goal of this work is to help in the development of reliable and efficient target and ion source systems for production of short-lived isotopes of a wide range of elements by the ISOL method. With this aim an oracle database of diffusion and desorption parameters with more than 10.000 entries has been built. The database is accessible on line and a web application has been developed allowing the retrieval of information from the database in order to assist in the configuration of the input parameters for a Monte Carlo code, RIBO, for the simulation of target-ion source systems.

  12. Postcombustion Capture of CO2 with CaO in a Circulating Fluidized Bed Carbonator

    NASA Astrophysics Data System (ADS)

    Alonso, M.; Rodriguez, N.; González, B.; Grasa, G.; Murillo, R.; Abanades, J. C.

    There is an emerging postcombustion capture technology that uses CaO to capture CO2 from combustion flue gases in a circulating fluidized bed reactor. This paper summarizes recent work conducted at CSIC to understand and develop this technology. The paper includes experimental results at conditions close to those expected in the real system, carried out in continuous mode in a 30kW test facility made up of two interconnected circulating fluidized bed reactors. In one of the reactors, CO2 is captured from the gas phase by the CaO continuously circulating from a calciner. In the second reactor, the CaCO3 formed in the carbonator is regenerated to CaO and CO2 by calcination. Modeling of the system at process level, at reactor level (in particular the CFB carbonator), and at particle level (decay in capture capability of CaO) is also outlined. The work carried out so far confirms that the carbonator reactors can be designed to attain capture efficiencies between 70-90%, operating at fluid dynamic conditions close to those present in circulating fluidized bed combustors.

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

    E-print Network

    Zhang, Wensheng

    Sensor 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. This paper explores the motion capability to relocate sensors to deal with sensor failure or respond to new

  14. On the data complexity of relative information completeness Yang Cao a,b

    E-print Network

    Antwerpen, Universiteit

    On the data complexity of relative information completeness Yang Cao a,b , Ting Deng b,n , Wenfei Fan a,b , Floris Geerts c a School of Informatics, University of Edinburgh, 10 Crichton Street XueYuan Road, Haidian District, Beijing, China c Department of Mathematics and Computer Science

  15. 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

  16. Brownian motion in dynamically disordered media James B. Witkoskie, Shilong Yang, and Jianshu Cao*

    E-print Network

    Cao, Jianshu

    Brownian motion in dynamically disordered media James B. Witkoskie, Shilong Yang, and Jianshu Cao April 2002; revised manuscript received 12 August 2002; published 26 November 2002 The motion of Brownian test particles in a model random potential with time dependent correlations is investigated using

  17. Organic cosolvents and hen egg white lysozyme folding Bing Lai, Aoneng Cao, Luhua Lai *

    E-print Network

    Luhua, Lai

    Organic cosolvents and hen egg white lysozyme folding Bing Lai, Aoneng Cao, Luhua Lai * State Key July 2000; accepted 3 August 2000 Abstract Studies on the influence of organic cosolvents on lysozyme soluble organic cosolvents on hen egg white lysozyme heat induced denaturation and refolding dynamics

  18. Synthesis and Electrochemical Properties of V2O5 Nanostructures Ying Wang and Guozhong Cao*

    E-print Network

    Cao, Guozhong

    by Fontenot et al. [11] with V2O5 (Alfa Aesar) and 30% H2O2 (J.T.Baker) as precursors. Applied voltage was 0Synthesis and Electrochemical Properties of V2O5 Nanostructures Ying Wang and Guozhong Cao synthesis and template-based electrodeposition. Processing, morphology, structure and electrochemical

  19. Developing Actionable Trading Strategies for Trading Agents Longbing Cao, Chao Luo, Chengqi Zhang

    E-print Network

    Cao, Longbing

    Developing Actionable Trading Strategies for Trading Agents Longbing Cao, Chao Luo, Chengqi Zhang,chengqi}@it.uts.edu.au Abstract Trading agents are very useful for developing and back- testing quality trading strategies for actions taking in the real world. However, the existing trading agent research mainly focuses

  20. Studies on additives of high-temperature CaO sulfation

    SciTech Connect

    Fan, H.; Zhang, M.; Yao, Q.; Cao, X.; Cen, K.

    1999-07-01

    It is known that FSI (Furnace Sorbent Injection) is a kind of simple method for SO{sub 2} control. However, SO{sub 2} removal efficiency is low because of low sorbent utilization efficiency. In this paper, additives of CaO sulfation were studied. Through experiments, it can be found that some alkaline-metal compounds (NaCl, etc) and Al{sub 2}O{sub 3} can enhance CaO sulfation. The removal efficiencies can reach 89%(NaCl) and 78%(Al{sub 2}O{sub 3}) respectively at Ca/S=1.6. Meanwhile, the results also show that, compared with alkaline-metal compounds, Al{sub 2}O{sub 3} is more effective in high-temperature zone. Through SEM and X-ray diffraction analyses, the mechanism is thought as the follows: alkaline-metal compounds can change microstructure of CaO, and Al{sub 2}O{sub 3} can make stable product (3CaO {sm{underscore}bullet} 3Al{sub 2}O{sub 3} {sm{underscore}bullet} CaSO{sub 4}) formed in high-temperature desulfurization process.

  1. The Informational Content of an Open Limit Order Book Charles Cao Oliver Hansch Xiaoxin Wang

    E-print Network

    Kearns, Michael

    The Informational Content of an Open Limit Order Book Charles Cao Oliver Hansch Xiaoxin Wang June Informational Content of an Open Limit Order Book Abstract We assess the informational content of an open limit order book from three directions: (1) Does the limit order book allow better inferences about a security

  2. Testing Service Composition Using TGSE tool Tien-Dung Cao 1

    E-print Network

    Paris-Sud XI, Université de

    Testing Service Composition Using TGSE tool Tien-Dung Cao 1 , Patrick F´elix 1 , Richard Castanet 1 Rochelle, France. Email: ismail.berrada@univ-lr.fr Abstract This paper proposes an approach to test (actively and passively) a Web service composition described in BPEL using the TGSE (Test Generation

  3. Quantum control of dissipative systems: Exact solutions Jianshu Cao, Michael Messina, and Kent R. Wilson

    E-print Network

    Cao, Jianshu

    t HM Hint , 1.2 where the molecular term is HM Hg g g He e e and the interaction term is Hint E(t) g eQuantum control of dissipative systems: Exact solutions Jianshu Cao, Michael Messina, and Kent R. Wilson Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla

  4. Agent-Based Grid Load Balancing Using Performance-Driven Task Scheduling Junwei Cao*1

    E-print Network

    Jarvis, Stephen

    Agent-Based Grid Load Balancing Using Performance-Driven Task Scheduling Junwei Cao*1 , Daniel P This work was carried out when the author was with the University of Warwick. Abstract Load balancing-driven task scheduler that has been developed for local grid load balancing. Each grid scheduler utilises

  5. A Data Stream Outlier Delection Algorithm Based On Reverse K Nearest Neighbors Cao Lijun 1

    E-print Network

    Morik, Katharina

    capture the phenomenon of concept drift of data stream in time. Results of experiments conducted on bothA Data Stream Outlier Delection Algorithm Based On Reverse K Nearest Neighbors Cao Lijun 1 , Liu-MAIL:Misscao6666@163.com, liuxiyin2003@sina.com, zamjam99@yahoo.cn Abstract--A new data stream outlier detection

  6. Evaluation of biological cell properties using dynamic indentation measurement Guoxin Cao* and Namas Chandra

    E-print Network

    Farritor, Shane

    Evaluation of biological cell properties using dynamic indentation measurement Guoxin Cao February 2010 Viscoelastic mechanical properties of biological cells are commonly measured using atomic on numerical simulation is built to determine the cell mechanical properties. It is shown that the existing

  7. Making Routers Last Longer with ViAggre Hitesh Ballani, Paul Francis, Tuan Cao and Jia

    E-print Network

    Greenberg, Albert

    Making Routers Last Longer with ViAggre Hitesh Ballani, Paul Francis, Tuan Cao and Jia Wang Cornell deployment Routing Table stored in Forwarding Information Base (FIB) on Routers Large Routing Table More FIB space on Routers #12;Does FIB Size Matter? The problem is Scaling Properties of FIB memory (low volume

  8. Context-Dependent Term Relations for Information Retrieval Jing Bai Jian-Yun Nie Guihong Cao

    E-print Network

    Nie, Jian-Yun

    Context-Dependent Term Relations for Information Retrieval Jing Bai Jian-Yun Nie Guihong Cao DIRO,nie,caogui}@iro.umontreal.ca Abstract Co-occurrence analysis has been used to determine related words or terms in many NLP-related applications such as query expansion in Information Retrieval (IR). However, related words are usually

  9. 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

  10. Modelling Business Energy Consumption using Agent-based Simulation Modelling Jason Wong and Kay Cao1

    E-print Network

    Modelling Business Energy Consumption using Agent-based Simulation Modelling Jason Wong and Kay Cao to estimate business energy consumption taking into account business decision-making process in responding feasibility. I. Introduction Current modelling techniques employed for deriving non-survey energy consumption

  11. Multi-GPU Load Balancing for In-situ Visualization R. Hagan and Y. Cao

    E-print Network

    Cao, Yong

    Multi-GPU Load Balancing for In-situ Visualization R. Hagan and Y. Cao Department of Computer simulations. Multi-GPU computing, on the other hand, allows concurrent computation of simulation and rendering that decreases utilization and performance. This work proposes load balancing for in-situ visualization

  12. Coupled Attribute Analysis on Numerical Data Can Wang, Zhong She, Longbing Cao

    E-print Network

    Cao, Longbing

    Coupled Attribute Analysis on Numerical Data Can Wang, Zhong She, Longbing Cao Advanced Analytics. This paper proposes a framework of the coupled at- tribute analysis to capture the global dependency and coupled via explicit or implicit relationships. Limited re- search has been conducted on analyzing such at

  13. Linear theory for optimal control of molecular wave packets Jianshu Cao and Kent R. Wilson

    E-print Network

    Cao, Jianshu

    Linear theory for optimal control of molecular wave packets Jianshu Cao and Kent R. Wilson-0339 Received 14 August 1996 A linear theory for optimizing optical fields to achieve a molecular configuration wave packets used by Averbukh and Shapiro Phys. Rev. A 47, 5086 1993 . A numerical example

  14. Recycling and waste minimisation behaviours of the transient student population in Oxford: results of an on-line survey

    Microsoft Academic Search

    Sally Robertson; Helen Walkington

    2009-01-01

    Due to growing pressure to meet recycling targets set by the UK central government, it is becoming increasingly important for local authorities to understand the characteristics of recycling behaviour and the factors that influence them. The demographic, situational and psychological factors that influence recycling behaviour were drawn from existing empirical research studies and used to create an on-line survey of

  15. On-line choice and the representation of serially structured stimuli.

    PubMed

    Roiblat, H L; Bever, T G; Helweg, D A; Harley, H E

    1991-01-01

    Three groups of pigeons were trained to discriminate between a target temporal sequence, consisting of red, green, and blue, and distractor sequences consisting of all other combinations of these three colors presented on a pecking key. Response alternatives were provided during the course of the trial (on-line decisions) as well as the end of the trial (postsequence decisions). Different temporal phrasing patterns emphasized the first stimulus in the sequence, the final stimulus, or all stimuli equally. The phrasing pattern did not affect the speed of acquisition, but groups receiving emphasized stimuli relied more heavily on those stimuli than on the other stimuli for their discriminations. The patterns of both on-line choices during the sequence and terminal choices following the sequence were consistent with the use of hierarchical representations and inconsistent with a simple item-by-item prospective discrimination scheme. PMID:2002307

  16. 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 ...

  17. Checking Consistency and Completeness of On-Line Product Manuals

    Microsoft Academic Search

    Carsten Sinz; Wolfgang Küchlin; Dieter Feichtinger; Georg Görtler

    2006-01-01

    Abstract. As products are growing more complex, so is their documentation. With an increasing number of product options, the diversity in service and maintenance procedures grows accordingly. This also holds for large-scale medical devices like Magnetic Resonance (MR) Tomographs. Siemens Medical Solutions has thus decided against one common,on-line service handbook for all its MR Tomographs. Instead, they fragment the on-line

  18. Fuzzy Relative Positioning for On-Line Handwritten Stroke Analysis

    Microsoft Academic Search

    Francois Bouteruche; Eric Anquetil

    This paper deals with the qualitative and robust mod- elling of the relative positioning of on-line handwritten strokes. We exploit the fuzzy approach to take the impre- cision of such relations into account. We first transpose a well-formalized method which proved itself in the domain of image analysis to the on-line case; it aims at evaluat- ing the relation \\

  19. On-Line Digit Recognition Using Off-Line Features

    Microsoft Academic Search

    Ankur Teredesai; Eugene H. Ratzlaff; Jayashree Subrahmonia; Venu Govindaraju

    2002-01-01

    This paper describes a classification method for on-line handwritten digits based on off-line image representations. The goal is to use image-based features to improve classifier accuracy for on-line handwritten input. In this paper we de- scribe an initial framework that can be used to achieve this goal. This framework for handwritten digit classification is based on genetic programming (GP). Several

  20. Glass electrode impendance and its measurement on-line

    SciTech Connect

    Gray, J.R. [Rosemount Analytical Co., Irvine, CA (United States)

    1995-12-31

    The on-line measurement of glass electrode and reference impedance is reviewed in terms of its usefulness as a diagnostic and predictive maintenance tool. The physical characteristics of the pH electrode, which give rise to the measured impedance are examined. The measurement of impedance both in the laboratory and on-line, are analyzed based on the impedance behavior of the glass electrode and its effect of the measurement. Factors influencing the measured impedance are identified.

  1. On-line identification of interacting two-tank system

    Microsoft Academic Search

    Sea Cheon Oh; Yeong-Koo Yeo

    1996-01-01

    In order to demonstrate the effectiveness of the process identification algorithm, on-line parameter estimator is evaluated\\u000a experimentally by using two-tank system with interaction. On-line parameter estimator used in this paper is based on a recursive\\u000a parameter estimation algorithm. MIMO linear, bilinear and quadratic models based on ARMA model are used to identify two-tank\\u000a system. A quadratic model for two-tank system

  2. On-line Error in Relative Values Algorithm 1

    E-print Network

    Baveja, Satinder Singh

    #12;#12;#12;#12;On-line Error in Relative Values | 0 | 250000 | 500000 | 750000 | 1000000 | 0.0 | 5.0 | 10.0 | 15.0 Algorithm 1 Number of States Visited AbsoluteCumulativeErrorinRelativeValueFunction On-line Error in Relative Values | 0 | 250000 | 500000 | 750000 | 1000000 | 0.0 | 5.0 | 10.0 | 15.0 Algorithm 2

  3. On-line monitoring of opaque liquids by photoacoustic spectroscopy

    Microsoft Academic Search

    T. Schmid; C. Helmbrecht; C. Haisch; U. Panne; R. Niessner

    2003-01-01

    A new photoacoustic sensor system for on-line monitoring of highly concentrated and optical opaque liquid samples is presented. The dyeing of textiles is performed with highly concentrated dye solutions with concentrations ranging from 50 mg Lу up to 40 g Lу. For process optimization and control of the wastewater, an on-line monitoring of the dye concentration is needed. Optical transmission

  4. Characterisation of CVD diamond dosimeters in on-line configuration

    Microsoft Academic Search

    M. Bruzzi; M. Bucciolini; G. A. P Cirrone; G. Cuttone; S. Mazzocchi; S. Pirollo; S. Sciortino

    2000-01-01

    The high sensitivity and the nearly tissue equivalence of diamond make it a material suitable as detector for on-line dosimetry. The tremendous development of the CVD diamond technology allows to employ polycrystalline diamond films with controlled dimensions and a potential low cost as on-line radiation dosimeters. In this paper a characterisation and a comparison of the response of two “detector-grade”

  5. 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.

  6. Materials compatibility during the chlorination of molten CaCl/sub 2/. CaO salts. [CaCl/sub 2/. CaO salt

    SciTech Connect

    Rense, C.E.C.; Fife, K.W.; Bowersox, D.F.; Ferran, M.D.

    1987-01-01

    As part of our effort to develop a semicontinuous PuO/sub 2/ reduction process, we are investigating promising materials for containing a 900/sup 0/C molten CaCl/sub 2/ . CaO chlorination reaction. We want the material to contain this reaction and to be reusable. We tested candidate materials in a simulated salt (no plutonium) using anhydrous HCl as the chlorinating agent. Data are presented on the performance of 36 metals and alloys, 9 ceramics, and 3 coatings.

  7. GPU Accelerated Fuzzy Connected Image Segmentation by using CUDA Ying Zhuge, Yong Cao, Jayaram K. Udupa, and Robert W. Miller

    E-print Network

    Cao, Yong

    ], upper airway segmentation in children via MRI for studying obstructive sleep apnea [6], electron {zhugey, rwmiller}@mail.nih.gov Yong Cao is with Computer Science Department, Virginia Poly- technic

  8. Ruben Armiana Chair; President, SSU Andrew Rogerson Co-Chair; Provost, CAO and Vice President for Academic Affairs

    E-print Network

    Ravikumar, B.

    Ruben Armiñana Chair; President, SSU Andrew Rogerson Co-Chair; Provost, CAO and Vice President for University Affairs Matthew Lopez-Phillips Chief Student Affairs Officer Erik Greeny Interim Vice President

  9. Connecting to On-line Data, a Progress Report

    NASA Astrophysics Data System (ADS)

    Eichhorn, G.; Astrophysics Datacenter Executive Committee (ADEC)

    2004-12-01

    The Astrophysics Datacenter Executive Committee (ADEC) has worked with the American Astronomical Society (AAS) and the University of Chicago Press (UChP) to implement links from the on-line literature to on-line data and vice versa. A first demonstration of this system is on-line in the Astrophysical Journal Supplement, Volume 154, Issue 1, a special issue about first results from Spitzer. Several of these on-line articles have links to on-line data. This linking system requires the collaboration of the data centers (marking data sets with unique identifiers, providing a verification system for identifiers, providing a systematic linking system to data sets), the ADS (providing a master verifier that connects the journal to the individual verifiers at the data centers, providing a linking server that allows stable links for the journals even if data sets move), and the AAS and the UChP (implementing LaTeX tags for identifiers, processing and verifying identifiers, implementing the links). Once the links are in place at the journal website, the publisher returns this information to the ADS and from there to the data centers in order to provide the data centers the information necessary to implement the opposite links from data sets to journal articles. The pipeline for this information flow is now fully in place and will be described in this poster. This work is supported by NASA under sevreal grants.

  10. Modéles de lignes simples et couplées, idéales et à pertes, pour la CAO des circuits gigabits

    Microsoft Academic Search

    Arimyaou Zounon; Paul Crozat; Robert Adde

    1990-01-01

    Résumé  Cet article expose les principes de conception d’une bibliothéque de modéles de lignes simples et couplées, idéales et à pertes,\\u000a pour la cao des circuits gigabits. Les modèles sont basés sur une description des lignes, dans le cadre de l’approximation\\u000a quasi-TEM, qui utilise la méthode des ondes mobiles et la simulation directe dans le domaine temporel pour des raisons de

  11. Breathing shell model in molecular dynamics simulation: Application to MgO and CaO

    Microsoft Academic Search

    Masanori Matsui

    1998-01-01

    Molecular dynamics (MD) simulation is used to calculate the elastic constants of both MgO and CaO at zero pressure, and their temperature dependences, as well as the temperature-pressure-volume equation of states of the two oxides. The interionic potential is taken to be the sum of pairwise additive Coulomb, van der Waals, and repulsive interactions. In order to account for the

  12. 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

  13. The CaO distribution to mineral phases in a high calcium fly ash from Eastern Germany

    SciTech Connect

    Enders, M. [WWU, Muenster (Germany)] [WWU, Muenster (Germany)

    1996-02-01

    High Calcium Fly Ashes (HCFA) are increasingly important as an admixture to mortar and concrete. The reactivity of HCFA is related to mineral phases like free lime, glassy spheres, anhydrite and yee`liminite. The occurrence of CaO in several crystalline phases and at least one non-crystalline mineral phase complicates the quantification of any of those mineral phases. This study focuses on a direct assessment of free lime and an indirect method for determination of CaO bounded in glassy spheres and anhydrite. CaO is enriched in fine particle size ranges. Glassy spheres are the most important CaO bearing mineral phase in the examined HCFA. The maximum CaO content bound in a glassy matrix is close to the composition of anorthite (<25 wt%). This is probably due to the restricted solubility of chemical species in a cooling melt of anorthitic composition. At the end of the high temperature process an equilibrium is attained between free lime, anhydrite and glassy spheres. The distribution of CaO among mineral phases is controlled by the availability of SO{sub 3} and free lime.

  14. Development of CaO coatings by thermal and chemical vapor deposition

    NASA Astrophysics Data System (ADS)

    Natesan, K.; Uz, M.; Smith, D. L.

    2002-12-01

    We conducted several experiments to test electrically insulating CaO coatings on a V-4Cr-4Ti alloy for application in the Li environment of liquid metal blankets in fusion reactors. Two processes that involve double Ca deposition/oxidation steps were developed to successfully coat V-4Cr-4Ti alloy samples with stable CaO. During the study, we examined several geometrical arrangements, using tabs and/or rod specimens. After Ca deposition from the vapor phase, the specimens were oxidized in an Ar-10 vppm O 2 environment at ?600 °C to convert the deposited metal into oxide, whereupon they exhibited insulating characteristics. Several coated specimens were then exposed to Li-2.8 at.%Ca at 500-700 °C to determine chemical compatibility and mechanical integrity. Depth profile analysis of the coatings was conducted to evaluate the compositional changes in the coatings and to assess the transport, if any, of substrate and coating constituents. Microstructural characteristics of the coatings were evaluated by scanning electron microscopy. The preliminary results indicate that CaO is a viable coating for V-Li advanced blankets.

  15. Interfacial Phenomena among Liquid Iron-Carbon Alloy, Liquid Slag, and Solid CaO

    NASA Astrophysics Data System (ADS)

    Taniguchi, Yoshinori; Seetharaman, Seshadri

    2012-06-01

    Interfacial phenomena between hot metal, liquid slag and solid CaO are important to the understanding of the desulfurization reaction in hot-metal treatment processes. In the current work, the surface tension of molten iron-carbon alloy and liquid slag as well as the interfacial tensions among molten iron-carbon alloy-solid CaO, liquid slag-solid CaO, as well as molten iron-carbon alloy-liquid slag were measured in the temperature range 1623 K to 1723 K (1350 °C to 1450 °C). The sessile drop method has been used for these measurements. To analyze the experimental results, two types of graphical analysis programs have been developed to determine the coordinates of the X-ray shadow or charge-coupled device (CCD) image of the droplet. Furthermore, a software package that uses the Gauss-Newton method to minimize an error function between the physically observed and a theoretical Laplacian curve has also been developed in this work.

  16. 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

  17. On-line access to geoscience bibliographic citations

    USGS Publications Warehouse

    Wild, Emily C.

    2012-01-01

    On-line geoscience bibliographic citations and access points to citations are exponentially increasing as commercial, non-profit, and government agencies worldwide publish materials electronically. On-line bibliographic tools capture cited works, and open access content allows for freely obtained citations and documents. For this newsletter, citations from the numerous journals and books listed in the "Recent Papers" section of the EXPLORE newsletters from 2008-2011 were used to provide freely-accessible web sites to determine the availability of bibliographic information.

  18. QCM array for on-line-monitoring of composting procedures.

    PubMed

    Dickert, Franz L; Lieberzeit, Peter A; Achatz, Paul; Palfinger, Christian; Fassnauer, Michael; Schmid, Erich; Werther, Wolfgang; Horner, Gerd

    2004-05-01

    Six QCM resonators forming a sensor array were coated with different molecularly imprinted polymers for the on-line monitoring of composting procedures. Four key analytes are traced, namely water, 1-propanol, ethyl acetate and limonene. Trendlines obtained on-line by the sensor during measurements in a commercial composter give a distinct pattern: the signal for the alcohols first decreases according to an increase in ethyl acetate concentration, and increases again, when obviously no more acetic acid is formed. Limonene is detected in later stages of composting. Similar trends could also be observed by GC-MS. Additionally, chromatographic and sensor data for limonene could be correlated with each other. PMID:15116236

  19. Alternative smoothing algorithms for on-line estimation problems

    NASA Technical Reports Server (NTRS)

    Baumgartner, Eric T.

    1991-01-01

    In recent years, much emphasis has been placed on the Kalman filter to solve on-line estimation problems. Smoothers, which determine state estimates at a certain time t using measurements between 0 and T, have been used primarily in off-line estimation schemes. This paper presents alternative forms of smoothers that can be used for on-line estimation problems. The alternative smoothing algorithms provide state estimates which are more refined than Kalman filtered state estimates. The alternative smoothing algorithms are illustrated in two examples. The first example considers a linear discrete-time system while the second example considers a nonlinear continuous-time system with discrete-time measurements.

  20. 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...

  1. 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...

  2. 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 ...

  3. Checking Consistency and Completeness of On-Line Product Manuals

    Microsoft Academic Search

    Carsten Sinz; Wolfgang Kuchlin; Dieter Feichtinger; Georg G

    As products are growing more complex, so is their documentation. With an increas- ing number of product options, the diversity in service and maintenance procedures grows accordingly. This also holds for large-scale medical devices like Magnetic Resonance (MR) Tomographs. Siemens Medical Solutions has thus decided against one common on-line ser- vice handbook for all its MR Tomographs. Instead, they fragment

  4. 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

  5. Recognition of On-Line Handwritten Commutative Diagrams

    Microsoft Academic Search

    Andreas Stoffel; Ernesto Tapia; Ra ´ ul Rojas

    2009-01-01

    We present a method for the recognition of on-line hand- written commutative diagrams. Diagrams are formed with arrows that join relatively simple mathematical expressions. Diagram recognition consists in grouping isolated symbols into simple expressions, recognizing the arrows that join such expressions, and finding the layout that best describes the diagram. We model the layout of the diagram with a grid

  6. Children's On-Line Processing of Scrambling in Japanese

    ERIC Educational Resources Information Center

    Suzuki, Takaaki

    2013-01-01

    This study investigates the on-line processing of scrambled sentences in Japanese by preschool children and adults using a combination of self-paced listening and speeded picture selection tasks. The effects of a filler-gap dependency, reversibility, and case markers were examined. The results show that both children and adults had difficulty in…

  7. WMI2, the Student's On-Line Symbolic Calculator

    ERIC Educational Resources Information Center

    Kovacs, Zoltan

    2011-01-01

    Student activities focused on discovering mathematics play an important role in the teaching and learning process. WebMathematics Interactive (WMI2) was developed to offer a fast and user-friendly on-line web interface to enhance the quality of both theoretical and applied mathematics courses. For the teacher, in the classroom, it provides…

  8. 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

  9. Supplemental on-line material for Semiconducting layered blue phosphorus

    E-print Network

    Tománek, David

    Supplemental on-line material for Semiconducting layered blue phosphorus: A computational study PHOSPHORUS ALLOTROPES Density functional calculations based on the Gener- alized Gradient Approximation phosphorus is reproduced rather well by the PBE value of 5.55 °A and the value of 5.09 °A based on the local

  10. 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

  11. 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

  12. Developing Effective On-Line Learning Resources in the Geosciences

    Microsoft Academic Search

    J. R. McDaris; C. A. Manduca

    2004-01-01

    On-line learning resources provide a new opportunity for geoscience faculty to utilize technology and the web in their classes. Online activities allow faculty to integrate online data, web resources and new assessment techniques in their teaching while easing the management of large classes. Creating high-quality resources gives instructors a valuable opportunity to examine their teaching and activities and it also

  13. Underground power cable environment on-line monitoring and analysis

    Microsoft Academic Search

    J. S. Lyall; G. Nourbakhsh; H. C. Zhao

    2000-01-01

    Knowledge of cable parameters has been well established but a better knowledge of the environment in which the cables are buried lags behind. Research in Queensland University of Technology has been aimed at obtaining and analysing actual daily field values of thermal resistivity and diffusivity of the soil around power cables. On-line monitoring systems have been developed and installed with

  14. Designing On-Line Political Communities to Accommodate Conflicting Interests

    Microsoft Academic Search

    Jeremy Rose; Øystein Sæbø

    On-line political communities, such as the Norwegian site Demokratitorget (Democracy Square), are often designed according to a set of un-reflected assumptions about the political interests of their potential members. In political science, democracy is not taken as given in this way, but can be represented by different models which characterize different relation- ships between politicians and the citizens they represent.

  15. On-line partial discharge detection in cables

    Microsoft Academic Search

    N. H. Ahmed; N. N. Srinivas

    1998-01-01

    This paper describes an on-line PD (partial discharge) detection technique applicable to power cables. The method can be applied to both wire screen and solid shielded cables. In wire screen shielded cables, PD components with frequencies <100 MHz can be detected at distances over 150 m from the source, PD activity with levels as low as 20 pC can be

  16. The Lesson Observation On-Line (Evidence Portfolio) Platform

    ERIC Educational Resources Information Center

    Cooper, David G.

    2015-01-01

    At a time when teacher training is being moved to school-based programmes it is important to engage in a research-informed dialogue about creating more distinctive, and cost-effective 21st century models of teacher training. Three years ago I began feasibility field testing the Lesson Observation On-line (Evidence Portfolio) Platform [LOOP]…

  17. 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

  18. Developing an On-Line Interactive Health Psychology Module

    ERIC Educational Resources Information Center

    Upton, Dominic; Cooper, Carol

    2006-01-01

    On-line teaching material in health psychology was developed which ensured a range of students could access appropriate material for their course and level of study. This material has been developed around the concept of smaller "content chunks" which can be combined into whole units of learning (topics), and ultimately, a module. On the basis of…

  19. On-Line Services in Medicine and Beyond

    ERIC Educational Resources Information Center

    McCarn, Davis B.; Leiter, Joseph

    1973-01-01

    Discusses the development and operation of MEDLINE which was initiated by the National Library of Medicine in 1971. This is the first generally accessible, on-line, national and international information retrieval service, and allows almost instantaneous searching of over 400,000 citations from the world's biomedical serial literature. (JR)

  20. A comparison of reading paper and on-line documents

    Microsoft Academic Search

    Kenton O'Hara; Abigail Sellen

    1997-01-01

    We report on a laboratory study that compares reading from paper to reading on-line. Critical differences have to do with the major advantages paper offers in supporting annotation while reading, quick navigation, and flexibility of spatial layout. These, in turn, allow readers to deepen their understanding of the text, extract a sense of its structure, create a plan for writing,

  1. On-Line Testing for Secure Implementations: Design and Validation

    Microsoft Academic Search

    Régis Leveugle; Yervant Zorian; Luca Breveglieri; André K. Nieuwland; Klaus Rothbart; Jean-pierre Seifert

    2005-01-01

    On-line testing approaches can today be useful when designing circuits with severe security constraints. The reasons are summarized in the introduction to the special session on secure implementations (in these proceedings). The presentations in this special session aimed at introducing the specific concerns related to security as well as some approaches used to protect the circuits and to validate their

  2. On-line test for fault-secure fault identification

    Microsoft Academic Search

    Samuel Norman Hamilton; Alex Orailoglu

    2000-01-01

    In an increasing number of applications, reliability is essential. On-line resistance to permanent faults is a difficult and important aspect of providing reliability. Particularly vexing is the problem of fault identification. Current methods are either domain specific or expensive. We have developed a fault-secure methodology for permanent fault identification through algorithmic duplication without necessitating complete functional unit replication. Fault identification

  3. The Rhetorical Dynamics of Gender Harassment On-Line

    E-print Network

    Herring, Susan

    The Rhetorical Dynamics of Gender Harassment On-Line Susan C. Herring Program in Linguistics draft of this article. Address correspondence to Susan C. Herring, Program in Linguis- tics, University of Texas at Arlington, Arlington, TX 76019, USA. E-mail: herring@uta.edu [http

  4. On-Line Algorithms for Division and Multiplication

    Microsoft Academic Search

    Kishor S. Trivedi; Milos D. Ercegovac

    1977-01-01

    In this paper, on-line algorithms for division and multiplication are developed. It is assumed that the operands as well as the result flow through the arithmetic unit in a digit-by-digit, most significant digit first fashion. The use of a redundant digit set, at least for the digits of the result, is required.

  5. Emotional states control for on-line game avatars

    Microsoft Academic Search

    Ce Zhan; Wanqing Li; Farzad Safaei; Philip Ogunbona

    2007-01-01

    Although detailed animation has already been achieved in a number of Multi-player On-line Games (MOGs), players have to use text commands to control emotional states of avatars. Some systems have been proposed to implement a real-time automatic system facial expression recognition of players. Such systems can then be used to control avatars emotional states by driving the MOG's \\

  6. 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...

  7. Steps Toward an On-Line Union List

    ERIC Educational Resources Information Center

    Carter, Ruth C.

    1978-01-01

    The on-line union list currently being developed by the University of Pittsburgh and libraries of the Pittsburgh Regional Library Center is described, including information on present procedures, future plans, and format for local data records agreed upon with OCLC. (Author/KP)

  8. On-Line and Back at S.F.U.

    ERIC Educational Resources Information Center

    Sanderson, M.

    1973-01-01

    Simon Fraser University library began operation with an automated circulation system. A radically revised loan policy caused the system design and assumptions to be questioned. A cheaper, simpler, and more effective off-line system eventually replaced the on-line system. The systems, fiscal, and administrative implications of this decision are…

  9. Modified Stability Checking for On-line Error Detection

    Microsoft Academic Search

    Satish Yada; Bharadwaj Amrutur; Rubin A. Parekhji

    2007-01-01

    The paper propose a unified error detection technique, based on stability checking, for on-line detection of delay, crosstalk and transient faults in combinational circuits and SEUs in sequential elements. The proposed method, called modified stability checking (MSC), overcomes the limitations of the earlier stability checking methods. The paper also proposed a novel checker circuit to realize this scheme. The checker

  10. On-Line Scheduling to Maximize Task Completions

    Microsoft Academic Search

    Sanjoy K. Baruah; Jayant R. Haritsa; Nitin Sharma

    1994-01-01

    The problem of uniprocessor scheduling under con- ditions of overload is investigated. The system objec- tive is to maximzze the number of tasks that complete by their deadlines. For this performance metric it zs shown that, in general, any on-line algorithm may per- form arbitrarily poorly as compared to a clairvoyant scheduler. Restricted znstances of the general problem for whzch

  11. The On-Line Processing of Unaccusativity in Greek Agrammatism

    ERIC Educational Resources Information Center

    Peristeri, Eleni; Tsimpli, Ianthi-Maria; Tsapkini, Kyrana

    2013-01-01

    We investigated the on-line processing of unaccusative and unergative sentences in a group of eight Greek-speaking individuals diagnosed with Broca aphasia and a group of language-unimpaired subjects used as the baseline. The processing of unaccusativity refers to the reactivation of the postverbal trace by retrieving the mnemonic representation…

  12. NOVEL ON-LINE ADAPTIVE LEARNING ALGORITHMS FOR BLIND DECONVOLUTION

    E-print Network

    Cichocki, Andrzej

    equalization, maximumentropy, multichan- nel systems, natural gradient, on-line learning. 1. INTRODUCTION ... ... hn1p hnmp 3 75 (2) is a (n m)-dimensional matrix of mixing coe cients at lag p. The goal impulse responses, re- spectively, z;1 is the delay operator, and z;p si(k)] = si(k ; p). This system

  13. On-line Detection of Rule Violations in Table Soccer

    E-print Network

    Nebel, Bernhard

    On-line Detection of Rule Violations in Table Soccer Armin Hornung and Dapeng Zhang Albert,zhangd}@informatik.uni-freiburg.de Abstract. In table soccer, humans can not always thoroughly observe fast actions like rod spins and kicks an automatic system using sensors on a regular soccer table to detect rule violations in realtime. Naive Bayes

  14. Attention in action: evidence from on-line corrections in left visual neglect.

    PubMed

    Rossit, Stéphanie; McIntosh, Robert D; Malhotra, Paresh; Butler, Stephen H; Muir, Keith; Harvey, Monika

    2012-05-01

    It is widely accepted that the posterior parietal cortex is critical for the on-line control of action and optic ataxia patients are unable to correct their movements in-flight to changes in target position. The current study investigated on-line correction in patients with left visual neglect, right brain damaged patients without neglect and healthy controls. Participants were asked to reach towards a central target that could jump unexpectedly, at movement onset, to the right or left sides of space. In response to the jump, participants were asked either to follow the target or to stop their movement. Neglect patients were able to correct their ongoing movements smoothly and accurately towards right and left target jumps. They did so even when told to stop their movement, indicating that these corrections occurred automatically (i.e., without instruction). However, the timing of corrections to the left was delayed in neglect patients and this produced a drastic increase in movement time. To our surprise, we also found that neglect patients were impaired at stopping their ongoing reaches, when compared to the control groups, in response to either left or right jump trials. We suggest that the 'automatic pilot' system for the hand is spared in neglect, but its processing speed is unilaterally slowed due to a deficit in orienting of attention to the contralesional side. We relate these findings to the breakdown of a system that combines information for attention, perception and action. Damage to this system may not only slow corrective movements to the contralesional side, but also produce non-lateralized deficits in interrupting an ongoing reach. PMID:22044647

  15. 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

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

    Microsoft Academic Search

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

    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°C)

  17. Training end-users: An on-line help package

    SciTech Connect

    Waite, M.

    1992-03-01

    No matter how wonderful your INGRES application, if the end users don`t know how to use the application it will not be utilized. This paper discusses an on-line help package implemented in our manufacturing database application in order to help our user community use the application. The Materials Fabrication Division (MFD) of Mechanical Engineering is a series of machining shops that do production jobs for the Laboratory. The Fabrication Control System (FCS) is the user interface to an INGRES database. FCS tracks jobs as they traverse the machine shops and FCS maintains the employee payroll. This interface consists of VIFRED forms, menus and EQUEL Fortran code. The on-line help package is an interactive system that responds to the users ``single key stroke`` request for information. The information retrieved is based upon which help key is used and the form or menu from which the request is generated.

  18. 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.

  19. The CEBAF on-line data acquisition system

    SciTech Connect

    Heyes, G.; Watson, W.A. III; Jastrzembski, E.; Chen, J.; Abbott, D.; Barker, D.

    1994-12-31

    The CEBAF On-line Data Acquisition system, CODA, is a flexible modular data acquisition system which has been designed to provide a common platform for data acquisition for the three experimental halls at CEBAF. CODA has been in use in detector tests at CEBAF and on-line in experiments at other laboratories (LSND, CHAOS). CODA runs on a distributed network of machines running the UNIX and VxWorks operating systems. The VxWorks systems may be embedded processors in VME, CAMAC or FASTBUS. The UNIX systems currently supported are ULTRIX and HP-UX. The system is modular and scalable and is designed to be easily ported to any future operating systems. This paper describes the main features of the current release of CODA and enhancements to CODA currently under development in preparation for the commissioning of the CEBAF detectors.

  20. Optimal On-Line Algorithms for Single-Machine Scheduling

    Microsoft Academic Search

    Han Hoogeveen; Arjen P. A. Vestjens

    1996-01-01

    We consider single-machine on-line scheduling problems where jobs arrive over time. A set of indepen- dent jobs has to be scheduled on the machine, where preemption is not allowed and the number of jobs is unknown in advance. Each job becomes available at its release date, which is not known in advance, and its characteristics, e.g., processing requirement, become known

  1. On-line Optimization of Drum Boiler Startup

    Microsoft Academic Search

    Klaus Kr; Rüdiger Franke; Manfred Rode; Klaus Krüger

    2003-01-01

    On-line optimization of industrial processes is increas- ingly important to minimize cost and environmental impact of a plant during its operation. The new Model- ica.Media and Modelica.Fluid base libraries allow the dynamic modeling of process systems (4). Their ap- plication to dynamic optimization is discussed on a tu- torial example. The optimization is based on a simple non-linear drum boiler

  2. Linking From the ADS to Other On-line Resources

    Microsoft Academic Search

    G. Eichhorn; A. Accomazzi; C. S. Grant; M. J. Kurtz; S. S. Murray

    2002-01-01

    The NASA Astrophysics Data System (ADS) currently provides free access to over 2.7 million records in four bibliographic databases through a sophisticated search interface. In addition to the basic metadata about a published paper, the ADS provides links to any relevant on-line resources, including full-text articles and published data tables. Similarly, an increasingly larger number of publishers and institutions are

  3. Publishing Links to Astronomical Data On-line

    Microsoft Academic Search

    A. Accomazzi; G. Eichhorn

    2004-01-01

    We discuss the design and implementation of a scheme enabling authors to refer and link to on-line datasets available from astronomical archives. This will provide the readers of electronic papers with direct access to the data discussed therein. The software tools used to create and maintain links from published papers to the datasets make use of Web-Services-based technology. The system

  4. On-line reference library aids gas-turbine users

    Microsoft Academic Search

    Curley

    1996-01-01

    This article describes a software application program which has been developed that helps the operator, technician, and others troubleshoot gas-turbine problems more effectively than traditional means. Paired with the personal computer, the program permits information, traditionally created and stored on hard copy, to be stored electronically--in effect, it is an on-line reference library. The electronic information can be retrieved, manipulated,

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

    Microsoft Academic Search

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

    2003-01-01

    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

  6. An on-line psychology laboratory for teaching and research

    Microsoft Academic Search

    Alan M. Lesgold; Robert J. Fitzhugh

    1977-01-01

    This paper describes a PDP-15 timesharing system in which on-line experimentation and an undergraduate laboratory course co-exist\\u000a with many other users. Design features include precise stimulus and response timing, easy experiment programming, easy system\\u000a access, and 15 or more simultaneous users. Students can be both experimenters and subjects in realistic, variable course modules.

  7. OnLine Service www.omega.com

    E-print Network

    Haller, Gary L.

    #12;OMEGAnet® OnLine Service www.omega.com Internet e-mail info@omega.com omega.com For immediate technical or application assistance: USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA-WHEN® TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA Mexico En Español: (001) 203-359-7803 e-mail: espanol@omega

  8. ON-LINE INDEPENDENT SUPPORT VECTOR MACHINES FOR COGNITIVE SYSTEMS

    Microsoft Academic Search

    Francesco Orabona; Claudio Castellini; Barbara Caputo; Luo Jie; Giulio Sandini

    Abstract. Learning from experience and adapting to changing,stimuli are fundamental capabilities for artificial cognitive systems. This calls for on-line learning methods,able to a chieve high accuracy while at the same time using limited computer,power. Research on autonomous,agents has been actively investigating these issues, mostly using probabilistic frameworks and within the context of navigation and learning by imitation. Still, recent results

  9. On-Line Terrain Parameter Estimation for Planetary Rovers

    Microsoft Academic Search

    Karl Iagnemma; Hassan Shibly; Steven Dubowsky

    2002-01-01

    Future planetary exploration missions will require rovers to traverse very rough terrain with limited human supervision. Wheel-terrain interaction plays a critical role in rough-terrain mobility. In this paper an on-line estimation method that identifies key terrain parameters using on-board rover sensors is presented. These parameters can be used for accurate traversability prediction or in a traction control algorithm. These parameters

  10. OLIPSA: ON-LINE INTELLIGENT PROCESSOR FOR SITUATION ASSESSMENT

    Microsoft Academic Search

    Sandeep Mulgund; Gerard Rinkus; Christine Illgen; Greg Zacharias; John Friskie

    1997-01-01

    This paper describes a study that assessed the feasibility of developing an concept prototype for an On-Line Intelligent Processor for Situation Assessment (OLIPSA), to serve as a central processor to manage sensors, drive decision-aids, and adapt pilot\\/vehicle interfaces in the next-generation military cockpit. The approach integrates several enabling technologies to perform the three essential functions of real-time situation assessment: •

  11. 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

  12. On-line testable logic design for FPGA implementation

    Microsoft Academic Search

    A. L. Burress; P. K. Lala

    1997-01-01

    In recent years, a number of logic design techniques for look-up table (LUT) based FPGAs have been proposed. However, none of these address issues such as fault detection or testability. This paper presents an algorithm which maps optimized Boolean expressions into look-up table based FPGAs. This mapping automatically incorporates testability features into designs, allowing on-line detection of faults within a

  13. 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

  14. On-line IDDQ testing of security circuits

    Microsoft Academic Search

    A. Bystrov; J. P. Murphy

    2004-01-01

    Abstract The new at-speed on-line IDDQ testing method,is based upon the properties of a special class of security circuits. These circuits implement dual-rail encoding and return-to-spacer protocol, where the spacer is either all-zeroes or all-ones. The alternating spacers of different polarity guarantee that all wires switch once within each clock cycle, thus making energy consumed within a clock cycle independent

  15. An advanced on-line video tracking system

    Microsoft Academic Search

    J. Hwang; Y. Ooi; S. Ozawa

    1993-01-01

    This paper describes an on-line visual sensing system available to a security area. The sensing system capable of tracking and zooming functions detects an unexpected object and records the series of available extracted object images in the time varying environment. Two algorithms-image processing to detect the object motion and parallel pan\\/tilt\\/zoom control-are proposed for the sensing system. In the image

  16. DEVELOPMENT OF AN ON-LINE COAL WASHABILITY ANALYZER

    SciTech Connect

    C.L. LIN; G.H. LUTTRELL; G.T. ADEL; JAN D. MILLER

    1998-03-31

    Washability analysis is the basis for nearly all coal preparation plant separations. Unfortunately, there are no on-line techniques for determining this most fundamental of all coal cleaning information. In light of recent successes at the University of Utah, it now appears possible to determine coal washability on-line through the use of x-ray computed tomography (CT) analysis. The successful development of such a device is critical to the establishment of process control and automated coal blending systems. In this regard, Virginia Tech, Terra Tek Inc., and several eastern coal companies have joined with the University of Utah and agreed to undertake the development of a x-ray CT-based on-line coal washability analyzer with financial assistance from DOE. The three-year project will cost $594,571, of which 33% ($194,575) will be cost-shared by the participants. The project involves development of appropriate software and extensive testing/evaluation of well-characterized coal samples from operating coal preparation plants. Each project participant brings special expertise to the project which is expected to create a new dimension in coal cleaning technology. Finally, it should be noted that the analyzer may prove to be a universal analyzer capable of providing not only washability analysis, but also particle size distribution analysis, ash analysis and perhaps pyritic sulfur analysis.

  17. Development of an On-Line Coal Washability Analyzer

    SciTech Connect

    C. L. Lin; G. H. Luttrell; G. T. Adel; Jan D. Miller

    1998-03-31

    Washability analysis is the basis for nearly all coal preparation plant separations. Unfortunately, there are no on-line techniques for determining this most fundamental of all coal cleaning information. In light of recent successes at the University of Utah, it now appears possible to determine coal washability on-line through the use of x-ray computed tomography (CT) analysis. The successful development of such a device is critical to the establishment of process control and automated coal blending systems. In this regard, Virginia Tech, Terra Tek Inc., and Cyprus-Amax Coal Company have joined with the University of Utah and agreed to undertake the development of a x-ray CT-based on-line coal washability analyzer with financial assistance from DOE. The three-year project will cost $594,571, of which 33% ($194,575) will be cost-shared by the participants. The project will involve development of appropriate software and extensive testing/evaluation of well-characterized coal samples from three coal preparation plants. Each project participant brings special expertise to the project which is expected to create a new dimension in coal cleaning technology. Finally, it should be noted that the analyzer may prove to be a universal analyzer capable of providing not only washability analysis, but also particle size distribution analysis, ash analysis and perhaps pyritic sulfur analysis.

  18. DEVELOPMENT OF AN ON-LINE COAL WASHABILITY ANALYZER

    SciTech Connect

    C.L. Lin; G.H. Luttrell; G.T. Adel; Jan D. Miller

    1999-03-31

    Washability analysis is the basis for nearly all coal preparation plant separations. Unfortunately, there are no on-line techniques for determining this most fundamental of all coal cleaning information. In light of recent successes at the University of Utah, it now appears possible to determine coal washability on-line through the use of x-ray computed tomography (CT) analysis. The successful development of such a device is critical to the establishment of process control and automated coal blending systems. In this regard, Virginia Tech, Terra Tek Inc., and several eastern coal companies have joined with the University of Utah and agreed to undertake the development of a x-ray CT-based on-line coal washability analyzer with financial assistance from DOE. The three-year project will cost $594,571, of which 33% ($194,575) will be cost-shared by the participants. The project involves development of appropriate software and extensive testing/evaluation of well-characterized coal samples from operating coal preparation plants. Each project participant brings special expertise to the project which is expected to create a new dimension in coal cleaning technology. Finally, it should be noted that the analyzer may prove to be a universal analyzer capable of providing not only washability analysis, but also particle size distribution analysis, ash analysis and perhaps pyritic sulfur analysis.

  19. Developing Effective On-Line Learning Resources in the Geosciences

    NASA Astrophysics Data System (ADS)

    McDaris, J. R.; Manduca, C. A.

    2004-12-01

    On-line learning resources provide a new opportunity for geoscience faculty to utilize technology and the web in their classes. Online activities allow faculty to integrate online data, web resources and new assessment techniques in their teaching while easing the management of large classes. Creating high-quality resources gives instructors a valuable opportunity to examine their teaching and activities and it also provides a new avenue for scholarly activity. Online resources are particularly suited to reuse by other faculty and sharing via the web. The On the Cutting Edge website "Developing Effective On-Line Learning Resources in the Geosciences" (http://serc.carleton.edu/NAGTWorkshops/webdesign/index.html) provides resources and support for faculty creating online resources. The site brings together research from experts in the fields of educational design, website construction and resource reusability to address many of the critical issues in designing new online resources or adapting traditional materials to use on the web. The site has activities to help faculty envision what goals their resource is to achieve, then provides links to best-practice information and exemplary sites to help faculty design resources that achieve these goals. Finally, the site addresses how to structure a new resource to maximize its reusability and appeal to other faculty. This poster will provide faculty the opportunity to explore resources on educational aspects of designing on-line learning resources, technical aspects of usability, accessibility and web-site design, and information on assessment and reusability.

  20. 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.

  1. DUSTER: collection of meteoric CaO and carbon smoke particles in the upper stratosphere

    NASA Astrophysics Data System (ADS)

    Rietmeijer, F. J. M.; Della Corte, V.; Rotundi, A.; Ferrari, M.; Palumbo, P.

    2014-04-01

    Nanometer CaO and pure carbon smoke particles were collected at 38-km altitude in the upper stratosphere in the Arctic during June 2008 using DUSTER (Dust in the Upper Stratosphere Tracking Experiment and Retrieval), a balloon-borne instrument for the non-destructive collection of solid particles between 200 nm to 40 microns. We report the collection of micron sized CaCO3 (calcite) grains. Their morphologies show evidence of melting and condensation after vaporization suggest at temperatures of approximately 3500 K. The formation environment of the collected grains was probably a dense dust cloud formed by the disintegration of a carbonaceous meteoroid during deceleration in the Earth's atmosphere.

  2. Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 1 Chapter 3: Medium Access Control in

    E-print Network

    Hu, Fei

    , CRC Press Page 1 Chapter 3: Medium Access Control in Wireless Sensor Networks 3.1 Introduction;Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 3 power

  3. Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 1 Chapter 6: Operating System in Sensors

    E-print Network

    Hu, Fei

    , CRC Press Page 1 Chapter 6: Operating System in Sensors Although operating system (OS) is a typical;Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 3 event handler immediately

  4. Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 1 Chapter 5: Transport Layer in Wireless

    E-print Network

    Hu, Fei

    , CRC Press Page 1 Chapter 5: Transport Layer in Wireless Sensor Networks As we recall from general Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 2 follows: [YIyer05] 1) Generic Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 3 6) Scalability: Sensor

  5. Development of natural crude drug resources from Taiwan (X). Pharmacognostical studies on the Chinese crude drug "han-lian-cao".

    PubMed

    Chen, J Y; Lin, C C; Namba, T

    1992-01-01

    In a previous paper(1), it was reported that the drug "Han-lian-cao", in Taiwan was derived from the entire plant or aerial part of Eclipta prostrata L. and Alternanthera sessilis R. Brown. In this paper, the histological studies of "Han-lian-cao" derived from Wedelia and Hypericum plants, and of 3 species of Wedelia related plants distributed in Taiwan were made. The results showed that it was possible to classify these species by their external and internal characteristics. In addition, a key to the characteristics of the whole plants of Eclipta, Alternanthera, Wedelia and Hypericum plants are hereby given. PMID:1605130

  6. 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.

  7. Calcium precursors for the production of CaO sorbents for multicycle CO2 capture.

    PubMed

    Liu, Wenqiang; Low, Nathanael W L; Feng, Bo; Wang, Guoxiong; Diniz da Costa, João C

    2010-01-15

    A screening of potential calcium precursors for the production of CaO sorbents for CO(2) capture at high temperature was conducted in this work. The precursors studied include microsized calcium carbonate (CC-CaO), calcium hydroxide (CH-CaO), nanosized (<70 nm) calcium carbonate (CC70 nm-CaO), nanosized (<160 nm) calcium oxide (CaO160 nm-CaO), calcium acetate hydrate (CA-CaO), calcium l-lactate hydrate (CL-CaO), calcium formate (CF-CaO), calcium citrate tetrahydrate (CCi-CaO), and calcium d-gluconate monohydrate (CG-CaO). The capture capability of these sorbents was investigated using a thermogravimetric analyzer (TGA) for multiple capture cycles. CG-CaO exhibited the best capacity for capturing CO(2) with a 1-min conversion of 65.9% and a 30-min conversion of 83.8% at the ninth cycle. Subsequently, a further parametric study was conducted to examine the effect of reaction conditions such as reaction temperature (550-750 degrees C) and CO(2) gas concentration (1-15%) on the capture capacity of CG-CaO. The sorbent CG-CaO also showed a much lower decomposition temperature and higher predicted residual conversion after prolonged cycles, compared with CC-CaO. PMID:20030311

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

    NASA Astrophysics Data System (ADS)

    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.

  9. 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

  10. 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

  11. In the Jungle of Astronomical On--line Data Services

    NASA Astrophysics Data System (ADS)

    Egret, D.

    The author tried to survive in the jungle of astronomical on--line data services. In order to find efficient answers to common scientific data retrieval requests, he had to collect many pieces of information, in order to formulate typical user scenarios, and try them against a number of different data bases, catalogue services, or information systems. He discovered soon how frustrating treasure coffers may be when their keys are not available, but he realized also that nice widgets and gadgets are of no help when the information is not there. And, before long, he knew he would have to navigate through several systems because no one was yet offering a general answer to all his questions. I will present examples of common user scenarios and show how they were tested against a number of services. I will propose some elements of classification which should help the end-user to evaluate how adequate the different services may be for providing satisfying answers to specific queries. For that, many aspects of the user interaction will be considered: documentation, access, query formulation, functionalities, qualification of the data, overall efficiency, etc. I will also suggest possible improvements to the present situation: the first of them being to encourage system managers to increase collaboration between one another, for the benefit of the whole astronomical community. The subjective review I will present, is based on publicly available astronomical on--line services from the U.S. and from Europe, most of which (excepting the newcomers) were described in ``Databases and On-Line Data in Astronomy", (Albrecht & Egret, eds, 1991): this includes databases (such as NED and Simbad ), catalog services ( StarCat , DIRA , XCatScan , etc.), and information systems ( ADS and ESIS ).

  12. Source reduction from chemical plants using on-line optimization

    SciTech Connect

    Zhang, Z.; Pike, R.W. [Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Chemical Engineering] [Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Chemical Engineering; Hertwig, T.A. [IMC-Agrico Corp., Uncle Sam, LA (United States)] [IMC-Agrico Corp., Uncle Sam, LA (United States)

    1995-12-01

    An effective approach for source reduction in chemical plants has been demonstrated using on-line optimization with flowsheeting (ASPEN PLUS) for process optimization and parameter estimation and the Tjao-Biegler algorithm implemented in a mathematical programming language (GAMS/MINOS) for data reconciliation and gross error detection. Results for a Monsanto sulfuric acid plant with a Bailey distributed control system showed a 25% reduction in the sulfur dioxide emissions and a 17% improvement in the profit over the current operating conditions. Details of the methods used are described.

  13. 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.

  14. 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.

  15. Applying object oriented concepts to on-line data acquisition

    NASA Astrophysics Data System (ADS)

    Dulya, C. M.; Crémy, C.; Vega, J.; Sánchez, E.; Portas, A.

    1999-01-01

    Concepts of object oriented programming have been applied to the on-line part of the data acquisition system of the TJ-II flexible heliac. The programs were written in C++ for a VxWorks operating system which uses general purpose interface bus (GPIB) connections to control computer automated measurement and control (CAMAC) crates with various types of digitizer modules. Since the digitizers have similar functionality, the application of object oriented methods is particularly efficient. Unfortunately, the control code of the CAMAC had to be built up in layers since the CAMAC/GPIB system is not well suited for good object oriented organization.

  16. Anisotropic alpha emission from on-line separated isotopes

    SciTech Connect

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

    1986-05-05

    A systematic on-line nuclear-orientation study of heavy isotopes using anisotropic ..cap alpha.. emission is reported for the first time. The anisotrophies recorded for /sup 199/At, /sup 201/At, and /sup 203/At are remarkably pronounced and strongly varying. At lower neutron number the ..cap alpha.. particles are more preferentially emitted perpendicularly to the nuclear-spin direction. This may be interpreted in terms of the high sensitivity of the ..cap alpha..-emission probability to changes in the nuclear shape.

  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. 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.

  19. Singular perturbation techniques for on-line optimal flight path control

    NASA Technical Reports Server (NTRS)

    Calise, A. J.

    1979-01-01

    This paper presents a partial evaluation on the use of singular perturbation methods for developing computer algorithms for on-line optimal control of aircraft. The evaluation is based on a study of the minimum time intercept problem using F-4 aerodynamic and propulsion data as a base line. The extensions over previous work on this subject are that aircraft turning dynamics (in addition to position and energy dynamics) are included in the analysis, the algorithm is developed for a moving end point and is adaptive to unpredictable target maneuvers, and short range maneuvers that do not have a cruise leg are included. Particular attention is given to identifying those quantities that can be precomputed and stored (as a function of aircraft total energy), thus greatly reducing the onboard computational load. Numerical results are given that illustrate the nature of the optimal intercept flight paths, and an estimate is given for the execution time and storage requirements of the control algorithm.

  20. A fiber optic sensor for on-line non-touch monitoring of roll shape

    NASA Astrophysics Data System (ADS)

    Guo, Yuan; Qu, Weijian; Yuan, Qi

    2009-07-01

    Basing on the principle of reflective displacement fibre-optic sensor, a high accuracy non-touch on-line optical fibre sensor for detecting roll shape is presented. The principle and composition of the detection system and the operation process are expatiated also. By using a novel probe of three optical fibres in equal transverse space, the effects of fluctuations in the light source, reflective changing of target surface and the intensity losses in the fibre lines are automatically compensated. Meantime, an optical fibre sensor model of correcting static error based on BP artificial neural network (ANN) is set up. Also by using interpolation method and value filtering to process the signals, effectively reduce the influence of random noise and the vibration of the roll bearing. So the accuracy and resolution were enhanced remarkably. Experiment proves that the resolution is 1?m and the precision can reach to 0.1%. So the system reaches to the demand of practical production process.

  1. Parallel preparative high-performance liquid chromatography with on-line molecular mass characterization.

    PubMed

    Edwards, Christine; Liu, Jianbo; Smith, Thomas J; Brooke, Daniel; Hunter, David J; Organ, Andrew; Coffey, Patrick

    2003-01-01

    High-throughput chemistry (HTC) is now an integral part of the lead discovery process in many pharmaceutical and related chemical companies. As this process becomes refined or improved, with the integration of systems with enhanced capabilities, and the requirement for quality compounds of high purity increases, purification is often considered a bottleneck. Although a wide range of purification techniques is available, high-performance liquid chromatography (HPLC) is usually the preferred method of purification to produce high-purity compounds. Parallel preparative HPLC with robust UV-guided fraction collection has been shown to reduce the bottleneck and complement the parallel synthesis systems. However, despite the success of this technique, post-purification analysis of fractions to identify the target compound adds an additional level of complexity. This paper describes the interfacing of the Biotage Parallex with the MUX interface on a single quadrupole mass spectrometer, thus combining robust UV-guided fractionation with on-line MS characterization. PMID:12955730

  2. Towards large scale multi-target tracking

    NASA Astrophysics Data System (ADS)

    Vo, Ba-Ngu; Vo, Ba-Tuong; Reuter, Stephan; Lam, Quang; Dietmayer, Klaus

    2014-06-01

    Multi-target tracking is intrinsically an NP-hard problem and the complexity of multi-target tracking solutions usually do not scale gracefully with problem size. Multi-target tracking for on-line applications involving a large number of targets is extremely challenging. This article demonstrates the capability of the random finite set approach to provide large scale multi-target tracking algorithms. In particular it is shown that an approximate filter known as the labeled multi-Bernoulli filter can simultaneously track one thousand five hundred targets in clutter on a standard laptop computer.

  3. On-line Scheduling Algorithm for the Gravitational Task Model

    Microsoft Academic Search

    Raphael Guerra; Gerhard Fohler

    2009-01-01

    Some applications for real-time scheduling have target demands in addition to the commonly used starttime and deadline constraints: a task should be executed at a target point in time for maximum utility, but can execute around this point, albeit at lower utility. Examples for such appli- cations include control and media processing. In this paper, we present a scheduling algorithm

  4. On-Line Diffusion Profile of a Lipophilic Model Dye in Different Depths of a Hair Follicle in Human Scalp Skin

    Microsoft Academic Search

    Ylva Y. Grams; Lynne Whitehead; Gerda Lamers; Nico Sturmann; Joke A. Bouwstra

    2005-01-01

    In skin and hair research, drug targeting to the hair follicle is of great interest in the treatment of skin diseases. The aim of this study is to visualize on-line the diffusion processes of a model fluorophore into the hair follicle at different depths using fresh human scalp skin and confocal laser scanning microscopy. Up to a depth of 500

  5. 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.

  6. On-line condition monitoring applications in nuclear power plants

    SciTech Connect

    Hastiemian, H. M. [Analysis and Measurement Services Corporation, Bldg. A-100, AMS 9111 Cross Park Drive, Knoxville, TN 37923 (United States); Feltus, M. A. [Office of Nuclear Energy, U.S. Dept. of Energy, 19901 Germantown Road, Germantown, MD 20874 (United States)

    2006-07-01

    Existing signals from process instruments in nuclear power plants can be sampled while the plant is operating and analyzed to verify the static and dynamic performance of process sensors, identify process-to-sensor problems, detect instrument anomalies such as venturi fouling, measure the vibration of the reactor vessel and its internals, or detect thermal hydraulic anomalies within the reactor coolant system. These applications are important in nuclear plants to satisfy a variety of objectives such as: 1) meeting the plant technical specification requirements; 2) complying with regulatory regulations; 3) guarding against equipment and process degradation; 4) providing a means for incipient failure detection and predictive maintenance; or 5) identifying the root cause of anomalies in equipment and plant processes. The technologies that are used to achieve these objectives are collectively referred to as 'on-line condition monitoring.' This paper presents a review of key elements of these technologies, provides examples of their use in nuclear power plants, and illustrates how they can be integrated into an on-line condition monitoring system for nuclear power plants. (authors)

  7. On-line diagnosis of sequential systems, 3

    NASA Technical Reports Server (NTRS)

    Sundstrom, R. J.

    1975-01-01

    A formal model is introduced which can serve as the basis for a theoretical investigation of on-line diagnosis. Within this model a fault of a system S is considered to be a transformation of S into another system S prime 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 prime thereafter. The on-line diagnosis of systems which are structurally decomposed and represented as a network of smaller systems is also investigated. The fault set considered is the set of unrestricted component faults; namely, the set of faults which only affect one component of the network. A characterization of networks which can be diagnosed using a combinational detector is obtained. It is further shown that any network can be made diagnosable in the above sense through the addition of one component. In addition, a lower bound is obtained on the complexity of any component, the addition of which is sufficient to make a particular network combinationally diagnosable.

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

    E-print Network

    Ceragioli, Francesca

    applications. Cao [14,15] has simulated compressible and incom- pressible Navier-Stokes flows, using mesh 2008 Space-Time adaptive simulations for unsteady Navier-Stokes problems S. Berrone, M. Marro Quaderni-Time adaptive simulations for unsteady Navier-Stokes problems S. Berrone a , M. Marro b aDipartimento di

  9. 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.

  10. Comparison of experimental results from three dual fluidized bed test facilities capturing CO 2 with CaO

    Microsoft Academic Search

    Nuria Rodríguez; Mónica Alonso; Juan Carlos Abanades; Alexander Charitos; Craig Hawthorne; Günter Scheffknecht; Dennis Y. Lu; Edward J. Anthony

    2011-01-01

    Postcombustion CO2 capture technologies using CaO as a regenerable solid sorbent have emerged as a promising route to reduce the electricity penalty and the cost of CO2 capture from flue gases of both new and existing fossil fu elled power plants. Rapid progress is taking place in the understanding of these processes at different levels. However, experimental information, validating the

  11. Scalable and High Performance HPC Architecture with Optical Interconnects Zheng Cao, Roberto Proietti, and S.J.B. Yoo

    E-print Network

    Yoo, S. J. Ben

    Scalable and High Performance HPC Architecture with Optical Interconnects Zheng Cao, Roberto, California, 95616, USA, e-mail: sbyoo@ucdavis.edu Abstract: We propose a HPC architecture that overcomes I become one of the main limitations in scaling High Performance Computing (HPC) performance. 1) Chip

  12. Optimal pump-dump control: Linearization and symmetry relation YiJing Yan, Jianshu Cao,a)

    E-print Network

    Cao, Jianshu

    Optimal pump-dump control: Linearization and symmetry relation YiJing Yan, Jianshu Cao of phase-unlocked pump-dump fields in the control of pure state molecular systems in the weak response regime. The associated eigenvalues are further correlated to the yields of pump-dump control, thus

  13. PROOF OF CORRECTNESS OF THE DIGITAL DELAUNAY TRIANGULATION THANH-TUNG CAO, HERBERT EDELSBRUNNER, AND TIOW-SENG TAN

    E-print Network

    Tan, Tiow Seng

    PROOF OF CORRECTNESS OF THE DIGITAL DELAUNAY TRIANGULATION ALGORITHM THANH-TUNG CAO, HERBERT. This provides the proof of correctness for recently developed GPU algorithms that outperform traditional CPU algorithms for constructing two-dimensional Delaunay triangulations. Key words. Graphics processing unit, GPU

  14. 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

  15. HALL: A Hierarchical All-to-All Optical Interconnect Architecture Zheng Cao, Roberto Proietti, and S.J.B. Yoo

    E-print Network

    Kolner, Brian H.

    HALL: A Hierarchical All-to-All Optical Interconnect Architecture Zheng Cao, Roberto Proietti propose a hierarchical all-to-all optical interconnection architecture that implements packet switching logic into a single chip as a system-on-a-chip. All-to-all communica- tion [4] is particularly important

  16. High rate compression of CAD meshes based on subdivision Compression de maillages CAO base sur la subdivision inverse

    E-print Network

    Dupont, Florent

    High rate compression of CAD meshes based on subdivision inversion Compression de maillages CAO. In this paper we present a new framework, based on subdivision surface approximation, for efficient compression after several subdivision steps, without artifacts or cracks, like traditional lossy compression schemes

  17. 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

  18. An Admission Control Scheme for QoS-Sensitive Cellular Networks Sunho Lim, Guohong Cao, and Chita R. Das

    E-print Network

    Lim, Sunho

    An Admission Control Scheme for QoS-Sensitive Cellular Networks Sunho Lim, Guohong Cao, and Chita R load is high. Therefore, admission control is an inte- gral part of the call management mechanism, PA 16802 Abstract--We propose an admission control scheme to guarantee a cer- tain level of QoS to on

  19. Hopping versus bulk conductivity in transparent oxides: 12CaO7Al2O3 J. E. Medvedevaa)

    E-print Network

    Medvedeva, Julia E.

    Hopping versus bulk conductivity in transparent oxides: 12CaO·7Al2O3 J. E. Medvedevaa) and A. J. This results in a transition from variable range-hopping behavior with a Coulomb gap in H-doped UV is provided by vari- able range hopping, while C12A7:2e- shows bulk conduc- tivity. In addition

  20. Making Routers Last Longer with ViAggre Hitesh Ballani, Paul Francis, Tuan Cao and Jia Wang

    E-print Network

    Keinan, Alon

    1 Making Routers Last Longer with ViAggre Hitesh Ballani, Paul Francis, Tuan Cao and Jia Wang), a "configuration-only" approach to shrinking the routing table on routers. ViAggre does not require any changes to router software and routing protocols and can be deployed independently and autonomously by any ISP. Vi

  1. A Robust Panel Extraction Method for Manga Xufang Pang, Ying Cao, Rynson W.H. Lau, and Antoni B. Chan

    E-print Network

    Lau, W. H. Nynson

    A Robust Panel Extraction Method for Manga Xufang Pang, Ying Cao, Rynson W.H. Lau, and Antoni B, au- tomatic panel extraction for manga, i.e., Japanese comics, can be especially challenging, largely. In this paper, we propose a ro- bust method for automatically extracting panels from digi- tal manga pages. Our

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

    E-print Network

    Litster, Shawn

    Steam-Coal Gasification Using CaO and KOH for in Situ Carbon and Sulfur Capture Nicholas S. SiefertO to capture carbon dioxide decreased roughly 2-4% per CaO-CaCO3 cycle. We also discuss an important with and without the addition of calcium oxide and potassium hydroxide as dual-functioning catalyst-capture agents

  3. Etude par frottement intrieur et impdance complexe d'une zircone calcie cubique ZrO2-CaO

    E-print Network

    Paris-Sud XI, Université de

    1979 Etude par frottement intérieur et impédance complexe d'une zircone calciée cubique ZrO2-CaO S échantillons monocristallins de zircone cubique stabilisée à la chaux. L'étude en fréquence des spectres partir des solutions solides de zircone soient très répandues, les aspects fondamentaux des propriétés de

  4. Raman study on B 2O 3-CaO glasses

    NASA Astrophysics Data System (ADS)

    Maniu, D.; Iliescu, T.; Ardelean, I.; Cinta-Pinzaru, S.; Tarcea, N.; Kiefer, W.

    2003-06-01

    Glasses are of special interest nowadays mainly because of the large applications that they span. Raman spectroscopy is an experimental technique appropriate for providing information about the structure of local arrangements of the atoms in glasses. The influence of CaO content on the structure of borate glasses was investigated by Raman spectroscopy. At low calcium oxide content the structure of calcium borate glass consists mainly of boroxol groups and a smaller number of pentaborate groups. In the vitreous network there are few diborate groups, chain type metaborate groups and pyroborate groups. At high calcium oxide content, pentaborate, orthoborate and metaborate groups appear. The increase of calcium oxide content yields an increase in number of non-bridging oxygen ions. Therefore, we conclude that calcium ions act as network modifiers in borate glasses.

  5. 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

  6. An expert system to perform on-line controller tuning

    NASA Technical Reports Server (NTRS)

    Litt, Jonathan S.

    1990-01-01

    An expert system which tunes a Proportional-Integral-Derivative (PID) controller on-line for a single-input-single-output multiple-lag process with dead time is described. The expert system examines features of the previous transient responses and their corresponding sets of controller parameters. It determines a new set of controller gains to obtain a more desirable time response. This technique can be used to determine and implement a different set of PID gains for each operating regime and, once in steady state, the system can be used to find optimal parameters for load disturbance rejection. The expert system can be applied to any system of the specified form (aerospace, industrial, etc.) and can be expanded to include additional process models.

  7. On-line monitoring of tan delta for substation equipment

    SciTech Connect

    Vujovic, P.; Fricker, R.K. [CSIR, Pretoria (South Africa)

    1996-03-01

    The ageing and deterioration of oil-paper insulation in high voltage equipment can result in explosions which are not only costly, but also put human lives at risk. Tan delta measurement is a well accepted method of monitoring the quality of insulation of bushings and current transformers in laboratories and on site. The use of tan delta measurement has been extended to on-line continuous measurement of equipment in service and a comparative method of analysis has been developed for selecting units with values that indicate potentially dangerous levels of degradation of the insulation. A cost effective PC based system that does not require the use of a standard high-voltage capacitor for taking measurements has been installed at two substations for in-service tests and further development.

  8. On-line inspection system for train wheel dimensions

    NASA Astrophysics Data System (ADS)

    Deng, Shanxi; Hong, Zhanyong; Lv, Guoqiang; Yang, Yongyue

    2005-01-01

    This paper introduces three types of on-line inspection system for train wheel dimensions developed by the authors in recent years. The first system is an inspection line for semi-manufacturing wheel used for the wheels just after rolling. Then, the second system is used to inspecting the manufactured wheels at the end of the wheel manufacturing flow. Thirdly, a wheel profile measuring system that can be used for wheel monitoring instead of manual measurement with a hand-held gauge in rail maintenance operation has been developed in our lab. Finally, a RRS (reconfigurable, reusable and scalable) design principle for agile manufacturing and measurement/inspection system is discussed in this paper.

  9. 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.

  10. A versatile apparatus for on-line emission channeling experiments

    SciTech Connect

    Silva, M. R. [Centro de Física Nuclear, Universidade de Lisboa, 1649-003 Lisboa (Portugal)] [Centro de Física Nuclear, Universidade de Lisboa, 1649-003 Lisboa (Portugal); Wahl, U.; Correia, J. G. [Centro de Física Nuclear, Universidade de Lisboa, 1649-003 Lisboa (Portugal) [Centro de Física Nuclear, Universidade de Lisboa, 1649-003 Lisboa (Portugal); Unidade de Física e Aceleradores, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa, 2686-953 Sacavém (Portugal); Amorim, L. M.; Pereira, L. M. C. [Instituut voor Kern- en Stralingsfysica, KU, Leuven, 3001 Leuven (Belgium)] [Instituut voor Kern- en Stralingsfysica, KU, Leuven, 3001 Leuven (Belgium)

    2013-07-15

    The concept and functionality of an apparatus dedicated to emission channeling experiments using short-lived isotopes on-line at ISOLDE/CERN is described. The setup is assembled in two functional blocks – (a) base stand including beam collimation, implantation and measurement chamber, cryogenic extension, and vacuum control system and (b) Panmure goniometer extension including maneuvering cradle and sample heating furnace. This setup allows for in situ implantation and sample analysis in the as-implanted state and upon cooling down to 50 K and during annealing up to 1200 K. The functionality of the setup will be illustrated with the example of establishing the lattice location of {sup 56}Mn probes implanted into GaAs.

  11. On-Line Robust Modal Stability Prediction using Wavelet Processing

    NASA Technical Reports Server (NTRS)

    Brenner, Martin J.; Lind, Rick

    1998-01-01

    Wavelet analysis for filtering and system identification has been used to improve the estimation of aeroservoelastic stability margins. The conservatism of the robust stability margins is reduced with parametric and nonparametric time- frequency analysis of flight data in the model validation process. Nonparametric wavelet processing of data is used to reduce the effects of external disturbances and unmodeled dynamics. Parametric estimates of modal stability are also extracted using the wavelet transform. Computation of robust stability margins for stability boundary prediction depends on uncertainty descriptions derived from the data for model validation. The F-18 High Alpha Research Vehicle aeroservoelastic flight test data demonstrates improved robust stability prediction by extension of the stability boundary beyond the flight regime. Guidelines and computation times are presented to show the efficiency and practical aspects of these procedures for on-line implementation. Feasibility of the method is shown for processing flight data from time- varying nonstationary test points.

  12. Designing on-line chromatograph systems for liquid fractionation facilities

    SciTech Connect

    Fraser, M. [Daniel Measurement and Control, Houston, TX (United States)

    1998-12-31

    One of the most important, but often poorly designed, facets of an on-line analytical system for gas processing facilities is the sample conditioning system (SCS). The sample delivered to the Gas Chromatograph (GC) must truly represent the process media if the measurement is to be accurate -- or even meaningful. Samples may be transported to the GC in either gas or liquid phase, but they will ultimately be analyzed in the gas phase only. Selection of sample location and careful attention to sample phase (liquid or gas) is required to ensure optimum system performance. Discussed in this paper are: typical process conditions, GC location, sample transport systems and details of both vapor- and liquid-phase sample conditioning.

  13. Association of Teachers of Mathematics: Resources OnLine

    NSDL National Science Digital Library

    The Association of Teachers of Mathematics (ATM), based in the United Kingdom, "believes in providing teachers with the resources to help them develop their mathematics teaching in creative and broad-thinking ways." This section on Resources OnLine offers a variety of resources, some of which are available only by purchase online. Some of the free online resources include sample files and programs from ATM CDs on spreadsheets and Interactive Mathematics, as well as some games involving shapes and probability. Films available in Macromedia Flash Player format demonstrate topics such as Polygons, Exploring Halves, Tangrams, and Euclid's Pythagoras Proof. A link to ATM's Convex Polyhedra Website shows 50 of the convex polyhedra that can be made with regular polygons and groups them into 10 families and some suggested activities to try using the images. Some articles from ATM Journals are also available online.

  14. Holographic digital microscopy in on-line process control

    NASA Astrophysics Data System (ADS)

    Osanlou, Ardeshir

    2011-09-01

    This article investigates the feasibility of real-time three-dimensional imaging of microscopic objects within various emulsions while being produced in specialized production vessels. The study is particularly relevant to on-line process monitoring and control in chemical, pharmaceutical, food, cleaning, and personal hygiene industries. Such processes are often dynamic and the materials cannot be measured once removed from the production vessel. The technique reported here is applicable to three-dimensional characterization analyses on stirred fluids in small reaction vessels. Relatively expensive pulsed lasers have been avoided through the careful control of the speed of the moving fluid in relation to the speed of the camera exposure and the wavelength of the continuous wave laser used. The ultimate aim of the project is to introduce a fully robust and compact digital holographic microscope as a process control tool in a full size specialized production vessel.

  15. PHENIX On-Line Distributed Computing System Architecture

    SciTech Connect

    Desmond, Edmond; Haggerty, John; Kehayias, Hyon Joo; Purschke, Martin L.; Witzig, Chris [Brookhaven National Lab., Upton, NY (United States); Kozlowski, Thomas [Los Alamos National Lab., NM (United States)

    1997-05-22

    PHENIX is one of the two large experiments at the Relativistic Heavy Ion Collider (RHIC) currently under construction at Brookhaven National Laboratory. The detector consists of 11 sub-detectors, that are further subdivided into 29 units (``granules``) that can be operated independently, which includes simultaneous data taking with independent data streams and independent triggers. The detector has 250,000 channels and is read out by front end modules, where the data is buffered in a pipeline while awaiting the level trigger decision. Zero suppression and calibration is done after the level accept in custom built data collection modules (DCMs) with DSPs before the data is sent to an event builder (design throughput of 2 Gb/sec) and higher level triggers. The On-line Computing Systems Group (ONCS) has two responsibilities. Firstly it is responsible for receiving the data from the event builder, routing it through a network of workstations to consumer processes and archiving it at a data rate of 20 MB/sec. Secondly it is also responsible for the overall configuration, control and operation of the detector and data acquisition chain, which comprises the software integration for several thousand custom built hardware modules. The software must furthermore support the independent operation of the above mentioned granules, which includes the coordination of processes that run in 60-100 VME processors and workstations. ONOS has adapted the Shlaer- Mellor Object Oriented Methodology for the design of the top layer software. CORBA is used as communication layer between the distributed objects, which are implemented as asynchronous finite state machines. We will give an overview of the PHENIX online system with the main focus on the system architecture, software components and integration tasks of the On-line Computing group ONCS and report on the status of the current prototypes.

  16. The IPOL Initiative: Publishing and Testing Algorithms on Line for Reproducible Research in Image Processing

    E-print Network

    Paris-Sud XI, Université de

    Image Processing On Line (IPOL) publishes image processing and image analysis algorithms, described on the development of image science. Keywords: reproducible research, image processing, implementation, web interface 1. Why Image Processing on Line? For computational sciences, detailed algorithms and implementations

  17. 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 ...

  18. 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....

  19. 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...

  20. 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....

  1. 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....

  2. 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...

  3. 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....

  4. 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...

  5. 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....

  6. 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...

  7. 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....

  8. 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....

  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. 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...

  12. On-Line Optimization for Fault Tolerant Flight Control Lunlong Zhong1

    E-print Network

    Paris-Sud XI, Université de

    On-Line Optimization for Fault Tolerant Flight Control Lunlong Zhong1 , Félix Mora-Camino2 1. ENAC. Keywords: active set, interior point, neural network, on- line optimization, fault tolerant flight control as the redundant effects from other actuators, a mathematical programming problem to be solved on-line which

  13. The Broadcast Comparison Model for On-Line Fault Diagnosis in Multicomputer Systems

    E-print Network

    Blough, Douglas M.

    The Broadcast Comparison Model for On-Line Fault Diagnosis in Multicomputer Systems: Theory been considered to be a practical approach for on-line fault diagnosis in multicomputer systems then performs diagnosis using the outcomes of these comparisons. An alternative approach to on-line fault

  14. 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

  15. 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

  16. ON-LINE BAYESIAN METHODS FOR ESTIMATION OF NON-LINEAR NON-GAUSSIAN SIGNALS

    E-print Network

    Godsill, Simon

    ON-LINE BAYESIAN METHODS FOR ESTIMATION OF NON-LINEAR NON-GAUSSIAN SIGNALS SIMON GODSILL Signal Processing Group, Cambridge University sjg@eng.cam.ac.uk September 26, 2002 #12;ON-LINE BAYESIAN METHODS time (blue line is true state value) 1 #12;ON-LINE BAYESIAN METHODS FOR ESTIMATION OF NON-LINEAR NON

  17. 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 #12;1 Overview The Web On-Line Financial (WOLF) Reports is a set of customer friendly reports

  18. Sussex Research On-Line Policies, July 2011 Executive Summary of Business

    E-print Network

    Sussex, University of

    Title Sussex Research On-Line: Institutional Repository Policies Author Ian Carter and Chris Keene (T The institution has decided to have a repository, and to be effective in capturing information about all outputs;2 Sussex Research On-Line Policies, July 2011 Senate Sussex Research On-Line: Institutional Repository

  19. 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

  20. 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

  1. An on-line tritium-in-water monitor

    NASA Astrophysics Data System (ADS)

    Singh, A. N.; Ratnakaran, M.; Vohra, K. G.

    1985-05-01

    The paper describes the development and operation of a continuous on-line tritium-in-water monitor for the detection of heavy water leaks into the secondary coolant light water of a heavy water power reactor. The heart of the instrument is its plastic scintillator sponge detector, made from 5 ?m thick plastic scintillator films. The sponge weighs only about 1 g and is in the form of disc of 48 mm diameter and 8 mm thickness. The total surface area of the films is about 3000 cm 2. In the coincidence mode of counting, the detector gives 1000 cps for the passage of 3.7 × 10 4 Bq/cm 3 (1 ?Ci/cm 3) of tritiated water. The background in 6 cm thick lead shielding in the laboratory is 0.2 cps, and inside the reactor building it is below 1 cps. The monitor presently scans 18 sample lines in sequence for 5 min each and gives a printout for the activity in each line.

  2. 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.

  3. 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.

  4. Laser Ultrasonic System for On-Line Steel Tube Gauging

    NASA Astrophysics Data System (ADS)

    Monchalin, Jean-Pierre; Choquet, Marc; Padioleau, Christian; Néron, Christian; Lévesque, Daniel; Blouin, Alain; Corbeil, Christian; Talbot, Richard; Bendada, Abdelhakim; Lamontagne, Mario; Kolarik, Robert V.; Jeskey, Gerald V.; Dominik, Erich D.; Duly, Larry J.; Samblanet, Kenneth J.; Agger, Steven E.; Roush, Kenneth J.; Mester, Michael L.

    2003-03-01

    A laser-ultrasonic system has been installed on a seamless tubing production line of The Timken Company and is being used to measure on-line the wall thickness of tubes during processing. The seamless process consists essentially in forcing a mandrel through a hot cylindrical billet in rotation and typically results in fairly large wall thickness variations that should be minimized and controlled to respect specifications. The system includes a Q-switched Nd-YAG laser for generation of ultrasound by ablation, a long pulse very stable Nd-YAG laser for detection coupled to a confocal Fabry-Perot interferometer, a pyrometer to measure tube temperature and two laser Doppler velocimeters to measure the coordinates of the probing location at the tube surface. The laser, data acquisition and processing units are housed in a cabin off line and connected to a front coupling head located over the passing tube by optical fibers. The system has been integrated into the plant computer network and provides in real time thickness data to the plant operators. It allow much faster mill setups, has been used since its deployment for inspecting more than 100,000 tubes and has demonstrated very significant savings.

  5. Manometric biosensor for on-line measurement of milk urea.

    PubMed

    Jenkins, Daniel M; Delwiche, Michael J

    2002-06-01

    Performance of a prototype sensor for on-line measurement of urea in milk during milking was evaluated. The sensor was based on a manometric assay of the carbon dioxide generated by the enzymatic hydrolysis of urea. Temperature compensation of the sensor was described briefly, and was shown to be effective. The calibration of the sensor was described and resulted in a standard calibration error of about 0.15 mM of urea. The standard error of the sensor in milk was shown to be about 0.25 mM (given a physiological range of about 2-7 mM in cow milk). The sensor was simple, inexpensive, suffered from no interferences in raw milk, and completed a measurement cycle in about 5 min (less than the time to milk a typical cow). A custom made sampling device, whereby milk was passively collected from the milk line under vacuum, was shown to collect an ample volume within 10 s to run a test with the sensor. No measurable bubbles or foam were introduced from the sampling mechanism so that the milk sampled was not diminished in density compared to samples taken by other methods. PMID:11959478

  6. 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

  7. 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.

  8. [11] A. Y. Cao, X. F. Zhang, C. L. Xu, J. Liang, D. H. Wu, B. Q. Wei, Appl. Surf. Sci. 2001, 181, 234.

    E-print Network

    Huang, Yanyi

    . Liu, G. Yu, C. Xu, J. Zhang, D. Zhu, J. Phys. Chem. B 2001, 105, 9422. [18] W. A. de Heer, W. S. Bacsa[11] A. Y. Cao, X. F. Zhang, C. L. Xu, J. Liang, D. H. Wu, B. Q. Wei, Appl. Surf. Sci. 2001, 181. 2003, 15, 1105. [13] S. Huang, A. H. W. Mau, Appl. Phys. Lett. 2003, 82, 796. [14] A. Y. Cao, B. Q. Wei

  9. 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.

  10. [Do we use the wrong target value for the supportive therapy of sepsis?].

    PubMed

    Köhler, Dieter

    2015-03-01

    Sepsis is a generalized, usually infectious disease with a complex dsyregulated immune response and capillary leak. The leakage leads to a severe drop of blood pressure with hypoperfusion and sympathetic counterregulation. The lung is frequently involved either as a source of the inflammation or by emergence of an ARDS, both resulting into severe hypoxemia. The supportive therapy is used to stabilize the hemodynamics and to keep the target value partial pressure of arterial oxygen (PaO2) in the lower limit of normal. Pathophysiologically it is not plausible to define hypoxemia on the basis of PaO2 or SaO2, because the supply of the cells is determined by the amount of oxygen molecules. This is mirrored by the oxygen content (CaO2) and the hemodynamic transport, the cardiac output. As far as data about the hypoxic tolerance of organs are available, the critical value respective the threshold for anaerobic metabolism is 5-10 folds lower than values achieved by application of current guidelines. If CaO2 would be used as the target value, a lot of measures aiming for normoxia, which potentially harm patients, could be avoided. Among these measures are high, often toxic inspiratory concentrations of oxygen, high ventilation pressure, dangerous body position changes and excessive volume administration. It is not surprising, that there are no plausible data in the literature which have shown a positive effect for the target value PaO2 or SaO2. Studies are urgent needed to compare CaO2 as a target value to the standards in the current guidelines. Additional animal experiments should be done to get information on the critical range of CaO2, in order to translate these results into treatment strategies for intensive care unit patients with severe hypoxemia. PMID:25774737

  11. A strategy for high-speed countercurrent chromatography purification of specific antioxidants from natural products based on on-line HPLC method with radical scavenging assay.

    PubMed

    Inoue, Koichi; Baba, Erika; Hino, Tomoaki; Oka, Hisao

    2012-10-15

    We have proposed a novel and first strategy of high-speed countercurrent chromatography (HSCCC) purification for the efficient and effective discovery of antioxidant from natural product based on on-line HPLC method with radical scavenging assay. To achieve a strategy for HSCCC purification, the antioxidants in materials are identified by on-line HPLC with DPPH radical scavenging assay. Then, the optimal condition of target peaks would be investigated for the two-phase solvent system, and purified by HSCCC. In this study, the specific antioxidants in red cabbage, perilla and elderberry pigments were evaluated by on-line HPLC with DPPH radical scavenging assay, and purified by HSCCC technique. Specific antioxidants could be rapidly pinpointed in complex mixtures by on-line HPLC with DPPH radical scavenging assay. Then, the optimal two-phase solvent systems were investigated using these HPLC peaks. Finally, the purification of these nine antioxidants form three mixtures were performed by HSCCC. Using mass spectrometric analysis, these antioxidants were confirmed to cyanidin-based anthocyanin from red cabbage and elderberry pigments, and luteolin-based flavones from perrilla pigment. Due to the advantages derived from on-line HPLC with DPPH radical scavenging assay and HSCCC technique, a rapid, efficient and effective strategy has been developed for the discovery of antioxidants from natural products. PMID:23442686

  12. 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

  13. Fabrication of room temperature-stable 12CaO · 7Al 2 O 3 electride: a review

    Microsoft Academic Search

    Sung-Wng Kim; Satoru Matsuishi; Masashi Miyakawa; Katsuro Hayashi; Masahiro Hirano; Hideo Hosono

    2007-01-01

    12CaO · 7Al2O3 (C12A7) electride, which is synthesized by replacing free oxygen ions in cages with electron anions, has distinct advantages\\u000a over electrides reported so far in respect of thermal and chemical stability and flexible preparation of various sample forms\\u000a including single crystal, thin film, polycrystalline bulk and powder. These advantages, together with the fact that the concentration\\u000a of the electron anions

  14. Heat recovery from a thermal energy storage based on the Ca(OH) 2\\/CaO cycle

    Microsoft Academic Search

    M. N. Azpiazu; J. M. Morquillas; A. Vazquez

    2003-01-01

    Thermal energy storage is very important in many applications related to the use of waste heat from industrial processes, renewable energies or from other sources. Thermochemical storage is very interesting for long-term storage as it can be carried out at room temperature with no energy losses.Dehydration\\/hydration cycle of Ca(OH)2\\/CaO has been applied for thermal energy storage in two types of

  15. On-line fluorescence lifetime determinations in capillary electrophoresis.

    PubMed

    Soper, S A; Legendre, B L; Williams, D C

    1995-12-01

    A near-infrared time-correlated single-photon counting instrument was developed for on-line fluorescence lifetime determinations of components separated by capillary electrophoresis (CE). The lifetimes of the migrating components were determined using maximum likelihood estimators, which are computationally easy to perform and yield values with high precision and favorable accuracies in the limit of low photocounts within the decay profile. The laser source used in the present system was a passively mode-locked Ti-sapphire laser with a single-photon avalanche diode serving as the fast detector. The instrument response function of this system was determined to be 165 ps (fwhm). Electrophorectic separation of two near-IR dyes, DTTCI (cationic) and IR-125 (anionic), in a 95:5 methanol/water running buffer (pH = 9.5) produced electrophoretic peak widths at the base of approximately 1 -9 s, which set the integration time for collection of the decay profiles. At a loading level of 1.42 zmol for IR-125 and 49 zmol for DTTCI, lifetime values were determined to be 482 +/- 14 ps for IR-125 and 943 +/- 23 ps for DTTCI, which agreed favorably with the lifetimes determined for these dyes using static measurements at high concentrations. To minimize background resulting from scattered photons in ultradilute conditions, which introduces bias into the lifetime determination, the calculation was initiated at a fixed time delay with respect to the excitation pulse. To demonstrate the feasibility of making lifetime determinations in capillary gel electrophoresis, where the gel can produce high scattering backgrounds, the lifetimes of C-terminated fragments produced from the M13mp 18 template and labeled at the 5' end of a universal M13 sequencing primer with a near-IR fluorescent tag were determined. The collection of lifetimes for 30 different peaks in the electropherogram yielded a mean value of 581 ps and a standard deviation of +/- 9 ps. PMID:8651478

  16. 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/.

  17. 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

  18. Micelle-assisted synthesis of Al2O3·CaO nanocatalyst: optical properties and their applications in photodegradation of 2,4,6-trinitrophenol.

    PubMed

    Imtiaz, Ayesha; Farrukh, Muhammad Akhyar; 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

  19. Li/Mo codoping of CaO films: a means to tailor the equilibrium shape of Au deposits.

    PubMed

    Shao, Xiang; Nilius, Niklas; Freund, Hans-Joachim

    2012-02-01

    Using scanning tunneling microscopy, we have investigated how the doping of CaO thin films affects the growth behavior of gold. Whereas 3D deposits develop on pristine films, 2D islands form after inserting 4% of Mo into the CaO lattice. Adding small amounts of Li to the Mo-doped CaO reinstalls the initial 3D growth regime. We assign this morphology crossover to charge transfer processes between the dopants and the ad-metal. Whereas Mo acts as an electron donor and provides excess charges to be transferred into the gold, Li creates electron traps in the oxide lattice that interrupt the charge flow toward the metal. The different Au charge states in the presence of the dopants are derived from different growth morphologies with anionic gold favoring a 2D mode due to an enhanced interface adhesion. Our work demonstrates how oxide doping can be exploited to tailor the equilibrium geometry of ad-particles on supported metal catalysts. PMID:22280016

  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. On-line damage detection in rotating machinery

    NASA Astrophysics Data System (ADS)

    Alkhalifa, Tareq Jawad

    This work is concerned with a set of techniques to detect internal defects in uniform circular discs (rotors). An internal defect is intentionally manufactured in stereolithographic discs by a rapid prototyping process using cured resin SL 5170 material. The analysis and results presented here are limited to a uniform circular disc, with internal defects, mounted on a uniform flexible circular shaft. The setup is comprised of a Bently Nevada rotor kit connected to a data acquisition system. The rotor consists of a disc and shaft that is supported by journal bearings and is coupled to a motor by a rubber joint. Damage produces localized changes in the strain energy, which is quantified to characterize the damage. Based on previous research, the Strain Energy Damage Index (SEDI) is utilized to localize the damage due to strain energy differences between damaged and undamaged modes. To accomplish the objective, this work covers three types of analysis: finite element analysis, vibration analysis, and experimental modal analysis. Finite element analysis (using SDRC Ideas software) is performed to develop a multi-degree-of-freedom (MDOF) rotor system with internal damage, and its dynamic characteristics are investigated. The analysis is performed for two different types damage cases: radial damage and circular damage. Parametric study for radial damage and random noise to undamaged disc have been investigated to predict the effect of noise in the damage detection. The developed on-line damage detection technique for rotating equipment incorporates and couples both vibration analysis and experimental modal analysis. The dynamic investigation of the rotating discs (with and without defect) is conducted by vibration signal analysis (using proximity sensors, data acquisition and LabView). The vibration analysis provides a unique vibration signature for the damaged disc, which indicates the existence of the damage. The vibration data are acquired at different running speeds (1000, 2500, 5000 rpm). Then the dynamic investigation of non-rotating discs (with and without defect) is conducted by experimental modal analysis (using STAR software). While the vibration analysis detects and indicates the existence of damage while the disc is rotating, experimental modal analysis (using STAR and MATLAB software) provides the localization of damage through the modal parameters for a non-rotating disc. Both of the experimental diagnostic algorithms are based on measurement of the dynamic behavior of the damaged disc. The results are compared with the reference, or baseline, one, obtained initially for an undamaged disc. (Abstract shortened by UMI.)

  2. 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.

  3. ASSESSING THE EFFECTIVENESS OF AN ON-LINE COMPUTER SCIENCE COURSE

    Microsoft Academic Search

    Stamos T. Karamouzis

    Though on-line technologies are rapidly becoming core components of the instructional experience of students little descriptive information exists to address the basic question about the effectiveness of on-line education as a delivery mechanism of computer science content. This article provides an effectiveness assessment of an on-line computer science course. The assessment methodology included a subjective and an objective dimension. The

  4. Process control and drug analysis with an on-line capillary electrophoresis system

    Microsoft Academic Search

    Heli Sirén; Kaija Luomanperä; Teemu Työppönen; Stella Rovio; Pertti Vastamäki; Pekka Savolahti

    2004-01-01

    Inorganic and organic ions in pulp and paper process waters and drug mixtures were studied. Real-time measurements and on-line simulated analyses were made. A novel on-line capillary electrophoresis instrument equipped with a fixed wavelength UV detector having a 254-nm filter was used for the analyses. Three dynamic sample and electrolyte micromodules provided on-line sampling, sample introduction and solution feedings. The

  5. Pattern recognition techniques in on-line hand written signature verification - A survey

    Microsoft Academic Search

    K. R. Radhika; G. N. Sekhar; M. K. Venkatesha

    2009-01-01

    Over the last two decades, in the field of secure communication and financial on-line applications, we have witnessed an explosive growth in biometric personal authentication systems which are covenant with a measurable physical characteristic or behavioral trait. On-line refers to making use of the time functions of the signing process. Verification of on-line signature as a biometric modality still is

  6. 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

  7. On-line diagnostics technology and repair results for medium voltage motors

    Microsoft Academic Search

    Y. P. Aksenov; I. V. Yaroshenko; G. Noe; A. V. Andreev

    2009-01-01

    This paper contains summary information on diagnostic technology principles including proactive maintenance strategy which comprises the following sections: motors on-line testing and defects location procedure; on-line diagnostic technology and data analysis; examples of test results, sensor installation in detail, and example of technical report. The Benefits of on-line diagnostics are as follows: determine - non-destructively - the probable extent of

  8. Study of the interferences with the on-line radioiodine measurements under nuclear accident conditions

    Microsoft Academic Search

    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 the

  9. On-Line Microbial Whole Effluent Toxicity Monitoring for Industrial Wastewater

    SciTech Connect

    Mathews, S; Hoppes, W; Mascetti, M; Campbell, C G

    2002-09-17

    In this study a respirometer is tested for its ability to act as an early upset warning device and whole effluent toxicity monitor for industrial discharge. Industrial discharge water quality is commonly evaluated by comparing measured chemical concentrations to target values or regulatory limits established by governmental agencies. Unless the regulatory values are based upon empirical data, the actual effect of the discharge on aquatic systems is unknown. At the same time assessing the environmental toxicology of wastewater discharges is complicated by synergistic relationships among chemical constituents producing greater total toxicity. For example, metals may be more toxic in waters with low total hardness or more soluble at lower pH. An alternative approach that we are investigating is whole effluent toxicity testing. This study investigates the measurement of whole effluent toxicity through an on-line respirometer that measures toxicity to microorganisms comprising activated sludge. In this approach the oxygen uptake rate is monitored and used as an indicator of microbial activity or health. This study investigates the use of an online whole effluent toxicity testing system to provide early upset warning and the consistency of measured response to low pH. Repeated exposure of the microorganisms to low pH results in reduced sensitivity of the microbial population. We investigate whether this reduction in sensitivity results from physiological acclimation or changes in species composition. We identify promising applications, where, with proper calibration, respirometry based toxicity monitoring appear to be well suited for relative comparisons of whole effluent toxicity.

  10. Quality control agent: Self-adaptive laser vibrometry for on-line diagnostics

    NASA Astrophysics Data System (ADS)

    Serafini, S.; Paone, N.; Castellini, P.

    2012-06-01

    It is presented the development of a self-adaptive diagnostic system based on laser vibrometry for production line quality control. The vibration measurement system consists of a laser Doppler vibrometer, equipped with scanning mirrors and a smart camera, which implements self-adaptivity for compensating target mis-positioning under guidance by a vision system and for the achievement of the best condition for measurement by optimizing the Doppler signal level. This system is designed as a Quality Control Agent (QCA) and it is part of a Multi Agent System (MAS) that supervises all the production line. The QCA behavior is defined so to perform a minimization of measurement uncertainty during the on line tests; for this purpose the QCA exhibits a self-adaptive behavior. Best measurement conditions are defined in terms of amplitude of the optical Doppler beat signal (signal quality - SQ). 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.

  11. 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.

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

    PubMed

    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. PMID:24593628

  13. Solid-state Marx based two-switch voltage modulator for the On-Line Isotope Mass Separator accelerator at the European Organization for Nuclear Research

    Microsoft Academic Search

    L. M. Redondo; J. Fernando Silva; H. Canacsinh; C. Mendes; R. Soares; J. Schipper; A. Fowler

    2010-01-01

    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

  14. 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

  15. Fusing Hyperspectral and LiDAR data from CAO-VSWIR for Increased Data Dimensionality

    NASA Astrophysics Data System (ADS)

    Knapp, D. E.; Asner, G. P.; Boardman, J. W.; Kennedy-Bowdoin, T.; Eastwood, M.; Anderson, C.; Martin, R. E.; Green, R. O.

    2012-12-01

    The use of multi-sensor platforms for scientific data collection requires precise co-location in order to gain maximum data dimensionality for Earth system research. The different types of collection mechanisms of the sensors (e.g., scanning and pushbroom) can make it difficult to precisely match data from multiple sensors, even when the sensors are flown on the same aircraft at the same time. To overcome these problems, the Carnegie Airborne Observatory (CAO) AToMS sensor suite uses a method that maximizes the match between the Light Detection and Ranging (LiDAR), Visible-to-Near Infrared (VNIR), and Visible-to-Shortwave Infrared (VSWIR) sensors. This is done by generating an intensity image from the LiDAR data that serves as a base on which the spectrometers (VNIR and VSWIR) are matched using ground control points (GCPs). To do so, we employ the use of automated tie point matching in the overlap regions of the spectrometers to improve the co-location between flightlines. The combination of the GCPs and tie points produce data that is used to build camera models for the VNIR and VSWIR spectrometers such that they will match the LiDAR data. The result produces a matched hyper-dimensional data set with great scientific information content. We compare the data dimensionality of two contrasting scenes - a built environment at Stanford University and a lowland tropical forest in Amazonia. Principal components analysis revealed 336 dimensions (degrees of freedom) in the Stanford case, and 218 dimensions in the Amazon. The Amazon case presents what could be the highest level of remotely sensed data dimensionality ever reported for a forested ecosystem. Simulated misalignment of data streams reduced the effective information content by up to 48%, highlighting the critical role of achieving high precision when undertaking multi-sensor fusion. The instrumentation and methods described here are a pathfinder for future airborne applications undertaken by the National Ecological Observatory Network (NEON) and other organizations.

  16. Cooperative ground moving target standoff tracking using UAVs

    Microsoft Academic Search

    Lin Wang; Huayong Zhu; Lincheng Shen

    2010-01-01

    To the problem of cooperative standoff tracking of a ground moving target using a team of UAVs, a novel solving framework was presented, which based on target state fusion estimation and prediction, as well as on-line motion planning. Firstly, a solving framework was presented, the formal representation and system models were established; secondly, the unscented information filter was suggested for

  17. 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

  18. Fault tolerant control with on-line control allocation for flexible satellite attitude control system

    Microsoft Academic Search

    Fu Yan-Ping; Cheng Yue-Hua; Jiang Bin; Yang Ming-Kai

    2011-01-01

    In this paper, a new method to handle faults for flexible satellite attitude control system during orbit maneuver is investigated. Fault tolerant control based on on-line control allocation is proposed to keep the stability and reliability of the system. First, a robust adaptive controller which considers constrained input and external disturbance is discussed. If faults occur, an on-line control allocation

  19. On-Line Heart Beat Recognition Using Hermite Polynomials And Neuro-Fuzzy

    E-print Network

    Osowski, Stanislaw

    On-Line Heart Beat Recognition Using Hermite Polynomials And Neuro-Fuzzy Network Tran Hoai Linh, Stanis¨aw Osowski and Maciej Stodolski Abstract The paper presents the neuro-fuzzy approach-mail: sto@iem.pw.edu.pl). #12;ON-LINE HEART BEAT RECOGNITION USING HERMITE POLYNOMIALS AND NEURO

  20. On-Line Handwritten Formula Recognition using Hidden Markov Models and Context Dependent Graph Grammars

    E-print Network

    Paris-Sud XI, Université de

    the mentioned desk-top applications, such a recognition engine could also be used as an inter- face/200 s re-sampling parsing 2D Figure 1. System overview 3. On-line character recognition With the presentedOn-Line Handwritten Formula Recognition using Hidden Markov Models and Context Dependent Graph

  1. Standardizing Evaluation of On-Line Continuing Medical Education: Physician Knowledge, Attitudes, and Reflection on Practice

    ERIC Educational Resources Information Center

    Casebeer, Linda; Kristofco, Robert E.; Strasser, Sheryl; Reilly, Michael; Krishnamoorthy, Periyakaruppan; Rabin, Andrew; Zheng, Shimin; Karp, Simone; Myers, Lloyd

    2004-01-01

    Introduction: Physicians increasingly earn continuing medical education (CME) credits through on-line courses, but there have been few rigorous evaluations to determine their effects. The present study explores the feasibility of implementing standardized evaluation templates and tests them to evaluate 30 on-line CME courses. Methods: A time…

  2. Providing Support for Adaptive Scripting in an On-Line Collaborative Learning Environment

    E-print Network

    Rose, Carolyn Penstein

    , Adaptive Support, Computer Mediated Communication. ACM Classification Keywords Education, E-Learning. INTRODUCTION Typical on-line education programs with full faculty support and other benefits are not always significantly cheaper than on-campus post-secondary learning [17]. In contrast, free on-line programs

  3. On-line learning of a Persian spoken dialogue system using real training data

    Microsoft Academic Search

    Maryam Habibi; Hossein Sameti; Hesam Setareh

    2010-01-01

    The first spoken dialogue system is developed for the Persian language is introduced. This is a ticket reservation system with Persian ASR and NLU modules. The focus of the paper is on learning the dialogue management module. In this work, real on-line training data are used during the learning process. For on-line learning, the effect of the variations of discount

  4. An On-line Method for Stator Fault Detection in Multi-phase PMSM Drives

    E-print Network

    Paris-Sud XI, Université de

    An On-line Method for Stator Fault Detection in Multi-phase PMSM Drives Fabien Meinguet*, Eric deals with an on-line fault detection method for multi-phase PMSM drives. The method is based an original method for detecting an abnormal asymmetrical behavior in five-phase PMSM drives and we apply

  5. Random Walks on Weighted Graphs, and Applications to On-line Algorithms

    E-print Network

    Doyle, Peter

    Random Walks on Weighted Graphs, and Applications to On-line Algorithms Don Coppersmith Peter Doyle of such random walks, and use them to design competitive randomized on-line algorithms. Let G be a weighted on a weighted graph with n vertices has stretch at least n - 1, and every weighted graph with n vertices has

  6. A randomized algorithm for the on-line weighted bipartite matching problem

    E-print Network

    Pluhár, András

    , 12]. Let G be an arbitrary weighted graph, and given two players, A and B, we consider the followingA randomized algorithm for the on-line weighted bipartite matching problem B´ela Csaba Andr´as Pluh´ar Abstract We study the on-line minimum weighted bipartite matching problem in arbi- trary metric

  7. An On-Line Electronics Graphics Symbol Set for the PLATO IV System.

    ERIC Educational Resources Information Center

    McClintock, Peggy A.; Kimberlin, Donald A.

    An electronics graphic symbol set for on-line construction of electrical and electronics schematic diagrams is described. Specific procedures involving off-line and on-line activities are presented for the development and entry of schematic diagrams utilizing a stored set of symbols. An example of the commands and coding required for the…

  8. An On-Line Planner for MARIE Frank Terpstra, Arnoud Visser and Bob Hertzberger

    E-print Network

    Visser, Arnoud

    and software that MARIE uses. MARIE is an autonomous robot based on an electric cart for the disabled In this paper we introduce an on-line planner implemented on MARIE, a real autonomous robot. Planning occurs at such a high level on a real robot. The on-line planner uses a simple algorithm based on elements of POP [10

  9. An OnLine Planner for MARIE Frank Terpstra, Arnoud Visser and Bob Hertzberger

    E-print Network

    Visser, Arnoud

    and software that MARIE uses. MARIE is an autonomous robot based on an electric cart for the disabled In this paper we introduce an on­line planner implemented on MARIE, a real autonomous robot. Planning occurs at such a high level on a real robot. The on­line planner uses a simple algorithm based on elements of POP [10

  10. 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

  11. An integrated on-line oil analysis method for condition monitoring

    Microsoft Academic Search

    Yin Yonghui; Wang Weihua; Yan Xinpin; Xiao Hanliang; Wang Chengtao

    2003-01-01

    An on-line oil monitoring system offers a suitable solution to the practical problems encountered in monitoring the conditions of machinery equipment. The objective of this paper is to present a systematic method for analysing wear particles in the lubricant used in a diesel engine, in a laboratory setting. An integrated on-line oil monitoring system, which combines an inductive transducer with

  12. 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

  13. Robust On - Line Monitoring of Mixing Quality in Water Supply Networks

    Microsoft Academic Search

    Mietek A. Brdys; Zbigniew Lisiak

    1999-01-01

    The paper applies an algorithm for recursive estimation of variables and parameters in general dynamic networks that has been developed by (Brdys 99) to robust on-line monitoring of the mixing water quality in dynamic water networks. A complete hydraulic information is assumed to be available on-line. First a parsimonious parametrisation of a mathematical model of mixing quality is derived. Next

  14. 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

  15. 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

  16. 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

  17. The impact of heterogeneity on master-slave on-line scheduling

    E-print Network

    Vivien, Frédéric

    The impact of heterogeneity on master-slave on-line scheduling Jean-François Pineau1 , Yves Robert1 for scheduling independent tasks on master-slave platforms. We assume a realistic one-port model where the master can communicate with a single slave at any time-step. We tar- get on-line scheduling problems, and we

  18. Protecting on-line casinos against fraudulent player drop-out Joaquin Garcia1

    E-print Network

    Garcia-Alfaro, Joaquin

    Protecting on-line casinos against fraudulent player drop-out Joaqu´in Garc´ia1 , Fr,gnavarro,jao}@ccd.uab.es Abstract Some multiplayer, on-line games rely on the collabo- ration of all participating players. If a player's gamble is aborted, the rest of players cannot continue playing. This behavior can be used

  19. 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…

  20. Greedy algorithms for on-line set-covering Giorgio Ausiello

    E-print Network

    Paris-Sud XI, Université de

    Greedy algorithms for on-line set-covering Giorgio Ausiello , Aristotelis Giannakos , Vangelis Th. Paschos Abstract We study the following on-line model for set-covering: elements of a ground set of size n and covering the most of the uncovered ground set- elements (obviously, these elements have not been yet

  1. On Indexing Sliding Windows over On-line Data Lukasz Golab1

    E-print Network

    Özsu, M. Tamer

    On Indexing Sliding Windows over On-line Data Streams Lukasz Golab1 , Shaveen Garg2 , and M. Tamer consider indexing sliding windows in main memory over on-line data streams. Our proposed data structures and query semantics are based on a division of the sliding window into sub-windows. By clas- sifying

  2. Enhancing On-Line Teaching with Verbal Immediacy through Self-Determination Theory

    ERIC Educational Resources Information Center

    Furlich, Stephen A.

    2013-01-01

    This paper explores the use of instructor verbal immediacy behaviors for on-line classes. Specifically, it demonstrates how instructor verbal immediacy behaviors found in face-to-face classes can also be displayed for on-line classes. It is argued that self-determination theory describes identification of the student as an important role in the…

  3. Man-Machine Cooperation for the On-Line Training of an Evolving Classifier

    E-print Network

    Paris-Sud XI, Université de

    Man-Machine Cooperation for the On-Line Training of an Evolving Classifier Manuel BOUILLON, Eric. The classifier used to recognize drawn symbols must hence be customizable, able to learn from very few data of using reject to supervise the on-line training of the evolving classifier. The objective is to obtain

  4. Development on the Remote On-Line Management System of Reworked Motherboard

    Microsoft Academic Search

    Jian Wang; Hong yan Li

    2011-01-01

    the Remote on-line Management System of Siban Gigabyte motherboard was designed, On the foundation of manual management, the On-line inquiry function, the electronic administration sheet function and the overtime storage reminds function were added. Practice proved that the time of customer's withdraw became more reasonable, the efficiency of service's rework was raised greatly. Both sides are satisfied with this system.

  5. A Comparison of Reading Paper and On-Line Documents Kenton O'Hara & Abigail Sellen

    E-print Network

    1 A Comparison of Reading Paper and On-Line Documents Kenton O'Hara & Abigail Sellen Rank Xerox>@cambridge.rxrc.xerox.com ABSTRACT We report on a laboratory study that compares reading from paper to reading on-line. Critical differences have to do with the major advantages paper offers in supporting annotation while reading, quick

  6. On-line leak sealing: A guide for nuclear power plant maintenance personnel

    Microsoft Academic Search

    G. Harrison; J. Pennington; A. Richardson; N. Adcock; P. Dufort

    1989-01-01

    This is a reference manual designed to assist plant maintenance personnel in evaluating on-line leak sealing of pipe and components. In nuclear power plants, particularly in the primary plant, the use of online leak sealing should be limited to those cases when conventional means of sealing are not practicable. Using this guide, individuals can determine whether on-line leak sealing could

  7. Predictive modeling with high-dimensional data streams: an on-line variable selection approach

    E-print Network

    Paris-Sud XI, Université de

    Predictive modeling with high-dimensional data streams: an on-line variable selection approach regression problems involving high dimensional data streams. The algorithm recursively extracts all be efficiently updated on-line and in an adaptive fashion. Simulation results based on artificial data streams

  8. Random walks on weighted graphs and applications to on-line algorithms

    Microsoft Academic Search

    Don Coppersmith; Peter Doyle; Prabhakar Raghavan; Marc Snir

    1993-01-01

    The design and analysis of randomized on-line algorithms are studied. This problem is shown to be closely related to the synthesis of random wdlks on graphs with positive real costs on their edges. A theory is developed for the synthesis of such wdlks, and it is employed to design competitive on-line algorithms. Much recent work has dealt with the competitive

  9. Student Guide to the Fall 2014 On-Line Housing Sign-Up Process

    E-print Network

    Suzuki, Masatsugu

    Student Guide to the Fall 2014 On-Line Housing Sign-Up Process February 26 ­ March 27, 2014 PleaseLine SignUp March 13 March 17 Newing, Hinman, Dickinson, CIW, Mountainview OnLine SignUp March 19Line Housing SignUp Process go to http://reslife.binghamton.edu/housingsignup The online housing signup

  10. Special Radical Detection by Statistical Classification for On-line Handwritten Chinese Character Recognition

    E-print Network

    Paris-Sud XI, Université de

    Special Radical Detection by Statistical Classification for On-line Handwritten Chinese Character.delaye@irisa.fr Abstract The hierarchical nature of Chinese characters has inspired radical-based recognition, but radical segmentation from characters remains a challenge. We previously proposed a radical-based approach for on- line

  11. CVD diamond particle detectors used as on-line dosimeters in clinical radiotherapy

    Microsoft Academic Search

    M. Bruzzi; M. Bucciolini; M. Casati; C. Deangelis; S. Lagomarsino; I. Løvik; S. Onori; S. Sciortino

    2004-01-01

    Chemical Vapour Deposited (CVD) diamond particle detectors have been tested as on-line dosimeters with a 25MV X-photon radiotherapic beam. Our tests show that CVD diamond films with charge collection distance in the range 50–100?m or higher can be good base materials for the development of radiotherapy dosimeters in on-line configuration.

  12. Developing a Theoretical Base for On-Line Documantation, Part II: Applying the Theory.

    ERIC Educational Resources Information Center

    Ramey, Judith

    1986-01-01

    Outlines the fields that can contribute research results to a theoretical understanding of broad goals that can govern design choices in on-line documentation. Suggests five theoretical precepts and pulls together research pertinent to the four main forms of on-line documentation: tutorials, assistance, messages, and modes of control. (HTH)

  13. On-line parameter estimation via algebraic method: An experimental illustration.

    E-print Network

    Paris-Sud XI, Université de

    described by spatially-dependent partial differential equations (PDEs). This paper presents a methodOn-line parameter estimation via algebraic method: An experimental illustration. R. Delpoux and T. Floquet ABSTRACT This article presents an algebraic on-line parameters estimation method for Linear Time

  14. Research for the Bearing Grinding Temperature On-Line Monitoring System Based on the Infrared Technology

    Microsoft Academic Search

    Huang Zongxiang

    2008-01-01

    On-line monitoring to temperature of grinding arc is an important link absolutely necessarily in bearing grinding automation. This paper introduced a new method, which is to monitor grinding temperature via infrared ray, designed the engineering model of grinding arc temperature on-line monitoring system, and presented with components of grinding temperature automatic detection system and made analysis to workflow of the

  15. Evolutionary On-line Learning of Cooperative Behavior with Situation-Action-Pairs

    E-print Network

    Denzinger, Jörg

    with agents based on prototype situation-action-pairs and the nearest-neighbor rule. For such an agent model-agent systems into off-line and on-line learning approaches. While off-line learning ap- proaches are based. In this paper we present an approach to on-line learning that is based on off-line learning techniques, namely

  16. 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

  17. Generic serial and parallel on-line direct-injection using turbulent flow liquid chromatography/tandem mass spectrometry.

    PubMed

    Grant, Russell P; Cameron, Cheryl; Mackenzie-McMurter, Shelley

    2002-01-01

    The development of turbulent flow chromatography (TFC) has enabled considerable growth in the utility of on-line direct-injection technologies. TFC has now become established in a large number of varied analytical environments, particularly drug discovery/pharmacokinetics, metabolite profiling, combinatorial library purification, pre-clinical and clinical GLP applications. The utility of turbulent flow technology for in-house pre-clinical and clinical quantitative applications has necessitated extensive valve-cleaning procedures, and consequently lengthy cycle-times, to effectively remove the system carry-over. In-house requirements for assay validation require carry-over less than 20% of the lowest level of quantification (LLOQ), corresponding to 0.02% carry-over for a linear calibration range incorporating 3 orders. A generic turbulent flow chromatography protocol has been developed for drug discovery that incorporates polymeric turbulent flow extraction (cyclone) with C18-based reverse-phase chromatography. Further, multiple wash steps are incorporated within the methodology to meet in-house requirements for carry-over. Selection of novel switching-valve materials based on polyarylethyl ketone (PAEK) and Hastelloy/Valcon E autosampler injection hardware has enabled us to significantly impact the cycle-time required to reduce carry-over. Consequently, optimal usage of switching valves has enabled parallel operation for a generic on-line direct-injection methodology to successfully reduce the total cycle-time. Overall reductions from 4 min per sample to 90 s per sample are shown with comparable data quality using a proprietary target molecule from 0.1-100 ng/mL. This paper describes the hardware configuration and methodologies utilized to perform generic serial and parallel on-line direct-injection using a Turboflow HTLC 2300 system. PMID:12207368

  18. 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.

  19. On the use of ocean-atmosphere-wave models during an extreme CAO event: the importance of being coupled

    NASA Astrophysics Data System (ADS)

    Carniel, Sandro; Barbariol, Francesco; Benetazzo, Alvise; Bonaldo, Davide; Falcieri, Francesco M.; Miglietta, Mario M.; Ricchi, Antonio; Sclavo, Mauro

    2015-04-01

    During winter 2012 an extreme meteorological event stroke the whole Europe and particularly its central-southern sector. A strong and persistent spit of cold air coming from Siberian region (a Cold Air Outbreak, CAO) insisted on northern Italy and the Adriatic sea basin, leading to decreases in the sea temperatures up to 6 °C in less than two weeks, ice formation on the Venice lagoon and an exceptional snow fall in the Apennine region. In the sea the CAO was associated to a significant episode of dense water formation (DWF), a crucial phenomenon that heavily impacts the whole Adriatic Sea (from the sinking of water masses and associated ventilation of the northernmost shelf, to the flow along the western coast, until the flushing of southern Adriatic open slope and submarine canyons, with associated sediment transport and bottom reshaping). The extent of the DWF event in the Northern Adriatic sub-basin was estimated by means of coastal observatories, ad hoc measurements and, until now, results from existing one-way coupled atmosphere-ocean models. These are characterized by no SST feedback from the ocean to the atmosphere, and therefore by turbulent heat fluxes that may heavily reflect a non-consistent ocean state. The study proposes an investigation of the 2012 CAO using a fully coupled, three components, ocean-atmosphere-wave system (COAWST). Results highlight that, although the energy interplays between air and sea do not seem to significantly impact the wind forecasts, when providing heat fluxes that are consistent with the ocean temperature we find modified heat fluxes and air sea temperatures figures. Moreover, the consistent description of thermal exchanges adopted in the fully coupled model can affect the basin circulation, the quantification of dense water produced mass, and the description of its migration pathways and rates of off-shelf descent.

  20. Interplay of excitonic effects and van Hove singularities in optical spectra: CaO and AlN polymorphs

    Microsoft Academic Search

    A. Riefer; F. Fuchs; C. Rödl; A. Schleife; F. Bechstedt; R. Goldhahn

    2011-01-01

    The quasiparticle band structures and fundamental energy gaps of the rock-salt (rs), zinc-blende (zb), and wurtzite (wz) polymorphs of CaO and AlN are calculated within the G0W0 approximation on top of a self-consistent solution of the generalized Kohn-Sham equation with the hybrid functional HSE03. Based on these reliable electronic structures, the dielectric functions of rs-CaO, zb-AlN, and wz-AlN including excitonic

  1. 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.

  2. 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. PMID:25834752

  3. Solution of MgO, CaO, and TiO[sub 2] in [alpha]-Al[sub 2]O[sub 3

    SciTech Connect

    Grimes, R.W. (Royal Institution of Great Britain, London (United Kingdom). Davy Faraday Research Lab.)

    1994-02-01

    Atomistic simulation methods are used to predict the preferred solution mechanisms and their associated energies. Both full- and partial-charge models are discussed. It was found that defect clustering always results in a significant lowering of the solution energies but does not change the preferred solution reaction of any of the oxides. The large size of the Ca[sup 2+] ion results not only in a higher solution energy (lower solubility) for CaO compared to MgO but also to a different preferred compensation mechanism. The predicted energy for the cosolution of MgO and TiO[sub 2] is dramatically smaller than for either oxide separately. Conversely, whereas solution of TiO[sub 2] aids the solution of CaO, additions of CaO do not support TiO[sub 2] solution.

  4. Hybridization of complementary strand and single-base mutated oligonucleotides detected with an on-line acoustic wave sensor.

    PubMed

    Furtado, L M; Thompson, M

    1998-10-01

    The hybridization of a biotinylated 25-mer oligonucleotide probe with complementary, non-complementary and single-base mutated 25-mer targets at the liquid-solid (neutravidin-modified) interface of a thickness-shear mode acoustic wave device was studied. The sensor was incorporated into an on-line configuration capable of both variable flow and stop-flow experiments. Under ambient temperature conditions different signals were obtained for the complementary and non-complementary cases. At higher temperatures, the former system exhibits behaviour characteristic of the production of intermediate duplexes which are decomposed by the re-introduction of buffer solution. The use of these conditions allows the distinction of binding events involving a set of single-base mutated 25-mers. Different responses were obtained depending on both the nature of the instigated mismatch in base pairing and on the location of mutation. PMID:10209884

  5. 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.

  6. White luminescence of Dy3+ ions doped 12CaO 7Al2O3 nanopowders under UV light excitation.

    PubMed

    Zhu, Hancheng; Liu, Yuxue; Yan, Duanting; Yan, Xiaolei; Liu, Chunguang; Xu, Changshan

    2011-11-01

    12CaO 7Al2O3:Dy3+ nanopowders were successfully synthesized by the chemical co-precipitation method. X-ray diffraction result shows that the single 12CaO 7Al2O3 phase is formed with Dy3+ ions to replace the Ca2+ ions in the host of 12CaO 7Al2O3. The yellow and blue emissions, attributed to the forced electric dipole transition of 4F(9/2) --> 6H(13/2) centered at 571 nm and the magnetic dipole transition of 4F(9/2) --> 6H(15/2) centered at 480 nm, respectively, were observed. The integrated intensity ratios of yellow to blue increase from 1.63 to 1.70 with Dy3+ concentration increasing from 0.8 to 2.0% for the as-prepared 12CaO 7Al2O3:xDy3+ phosphor. The significantly enhanced emission intensities of 12CaO 7Al2O3:1.0% Dy3+ phosphor annealed at 900 degrees C for 2 hours in vacuum ambient could be ascribed to the decrease of OH(-) groups and the change of the surface topography. The thermal stability and the Commission International de l'Eclairage coordinates were also investigated. All the photoluminescence characteristics indicate that Dy3+ ions doped 12CaO 7Al2O3 may be a good candidate for the solid state lighting phosphor as well as white light-emitting diodes. PMID:22413330

  7. The ASDC Multi Mission Interactive Archive: on line analysis of the Swift/XRT data

    SciTech Connect

    Stratta, G.; Capalbi, M.; Perri, M. [ASDC, via G. Galilei, I-00044, Frascati (Italy); Giommi, P. [ASI-ASDC c/o ESRIN, Via G. Galilei, I-00040, Frascati (Italy)

    2010-10-15

    We present the Swift/XRT Interactive Archive and the On-line Analysis tool developed at the ASI Science Data Center (ASDC) as part of the Multi Mission Interactive Archive. The On-line Analysis enables to run the Swift/XRT software task ''xrtpipeline'' on any desired XRT observation present in the Swift data archive maintained at ASDC, directly on the web. On-line imaging (with XIMAGE), spectral (with XSPEC) and timing data analysis (with LCURVE) can be performed. At the same time, spectra, light curves, effective area, exposure map and response matrix are promptly available for download to the user for any off-line analysis.

  8. The rates of desulfurization of liquid iron by solid CaO and CaO-saturated liquid iron oxide at 1600‡c

    Microsoft Academic Search

    A. Saelim; D. R. Gaskell

    1983-01-01

    The rates of desulfurization of Fe-O-S melts by CaO crucibles and by CaO-saturated liquid iron oxide have been measured at\\u000a 1600 ‡C. It was found that irons containing 1.62 wt pct and 0.64 wt pct sulfur and 0.070 wt pct oxygen are desulfurized by\\u000a a reaction with the containing CaO crucible which does not involve the formation of a CaS

  9. Charge competition with oxygen molecules determines the growth of gold particles on doped CaO films.

    PubMed

    Cui, Yi; Huang, Kai; Nilius, Niklas; Freund, Hans-Joachim

    2013-01-01

    The influence of gas-phase oxygen on the growth of Au nanoparticles on Mo-doped CaO films has been investigated by means of low temperature scanning tunnelling microscopy and X-ray photoelectron spectroscopy. Whereas at ideal vacuum conditions, only 2D Au islands develop on the oxide surface, the fraction of 3D deposits increases with increasing O2 pressure until they become the dominant species in 106 mbar oxygen. The morphology crossover arises from changes in the interfacial electron flow between Mo donors in the CaO lattice and different ad-species on the oxide surface. In the absence of 02 molecules, the donor electrons are predominately transferred to the Au ad-atoms, which consequently experience enhanced binding to the oxide surface and agglomerate into 2D islands. In an oxygen atmosphere, on the other hand, a substantial fraction of the excess electrons is trapped by adsorbed O2 molecules, while the Au atoms remain neutral and assemble into tall 3D particles that are typical for non-doped oxides. Our experiments demonstrate how the competition for charge between different adsorbates governs the physical and chemical properties of doped oxides, so widely used in heterogeneous catalysis. PMID:24015581

  10. 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 .

  11. 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.

  12. On-Line Serials Control System in a Large Biomedical Library; Part III: Comparison of On-Line and Batch Operations and Cost Analysis

    ERIC Educational Resources Information Center

    Fayollat, James

    1973-01-01

    The on-line serials control system in use at the UCLA Biomedical Library is compared with former batch processing and manual procedures. It is evaluated in terms of performance, user satisfaction and costs, and is shown to be superior in these respects. The system makes possible increased productivity and savings. (8 references) (Author/KE)

  13. 1 Winter 1999 URSA OnLine extends hours and adds new feature

    E-print Network

    Grether, Gregory

    Advancement Program BAR Billing and Receivables BOL Bruin OnLine BOLid Bruin Online Identification CAR&S Letters and Science, College of MIP Medical Insurance Plan OAC Office of Academic Computing OSD Office Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Mandatory Medical

  14. 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) ...

  15. On-line implementation of an adaptive speed filter and its experimental demonstration 

    E-print Network

    Abdul, Anis Mohamed

    2001-01-01

    previously developed neural network speed filter is implemented for on-line induction motor speed estimation. The speed filter is constructed using a combination of five neural networks. A neural networks framework developed in this work is used to construct...

  16. Next generation of on-line process gas chromatographs for environmental and vehicle emissions applications

    SciTech Connect

    Staphanos, S.J. [Rosemount Analytical Inc., La Habra, CA (United States)

    1995-12-31

    The on-line process gas chromatograph has been used for many years for monitoring environmental pollution. Although the standard on-line process gas chromotograph does an excellent job in this regard, the cost of the size of the instrument were overkill for monitoring one or a few components. The next generation on on-line process gas chromotographs is a 19-inch rack mountable instrument equipped with the state of the art, modular, microprocessor-advanced analysis components, remote calibration, stream sequencer, and serial link output to data distribution control systems and host computers. These features result in substantial cost reduction to the customer. This paper describes the design and the applications of the next generation of on-line process gas chromatographs for environmental and vehicle emissions analysis.

  17. 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)

  18. Three Chinese Students’ Experiences of Taking On-line Courses in One American University

    E-print Network

    Yang, Xinyuan

    2012-10-19

    needs and expectations towards this new learning experience becomes critical. Chinese students are the second largest group of international students in the U.S., yet, studies on their learning needs and challenges in on-line learning are limited...

  19. 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

  20. On-line implementation of an adaptive speed filter and its experimental demonstration

    E-print Network

    Abdul, Anis Mohamed

    2001-01-01

    previously developed neural network speed filter is implemented for on-line induction motor speed estimation. The speed filter is constructed using a combination of five neural networks. A neural networks framework developed in this work is used to construct...

  1. On-Line Serials Control System in a Large Biomedical Library: (1) Description of the System

    ERIC Educational Resources Information Center

    Fayollat, James

    1972-01-01

    An on-line serials control system with particular emphasis on storage and maintenance concepts is described. The system allows real-time display and updating of all elements of the file. (6 references) (Author)

  2. On-line, continuous and automatic monitoring of extracellular malondialdehyde concentration in anesthetized rat brain cortex.

    PubMed

    Yang, C S; Tsai, P J; Chen, W Y; Kuo, J S

    2001-03-01

    An assay for in vivo, continuous and automatic monitoring of extracellular malondialdehyde concentrations in anesthetized rat brain cortex was developed. This method involved the use of microdialysis perfusion, on-line derivatization and on-line high-performance liquid chromatographic analysis. Microdialysate from an implanted microdialysis probe was on-line reacted with thiobarbituric acid at 80 degrees C for 10 min prior to on-line collection and automatic injection into a HPLC system equipped with a fluorescence detector. This method gave a linear response between the concentrations of the malondialdehyde in the microdialysates and the TEP solution where the microdialysis probe was placed. This method was used to observe the increased extracellular malondialdehyde production following elevated extracellular glutamate levels, which were achieved by perfusion of L-trans-pyrrolidine-2,4-dicarboxylate, a competitive inhibitor of glutamate uptake transporter. PMID:11254194

  3. On-line leak sealing: A guide for nuclear power plant maintenance personnel

    SciTech Connect

    Harrison, G.; Pennington, J.; Richardson, A.; Adcock, N.; Dufort, P.

    1989-07-01

    This is a reference manual designed to assist plant maintenance personnel in evaluating on-line leak sealing of pipe and components. In nuclear power plants, particularly in the primary plant, the use of online leak sealing should be limited to those cases when conventional means of sealing are not practicable. Using this guide, individuals can determine whether on-line leak sealing could be a safe and economical way to provide temporary sealing of pressurized pipe and components for maintenance purposes. The manual also provides valuable guidance for use during on-line leak sealing applications. It does not, however, provide complete instruction for the installation or operation of the leak sealing equipment, and it cannot cover all possible applications or solutions to potential problem areas. Because of these particulars and the hazards involved in this technology, individuals assigned to apply on-line leak sealing must be trained and qualified to operate the equipment and perform the applications techniques. 47 figs.

  4. Algorithmic and implementation aspects of on-line calibration of Dynamic Traffic Assignment

    E-print Network

    Huang, Enyang

    2010-01-01

    This thesis compares alternative and proposes new candidate algorithms for the online calibration of Dynamic Traffic Assignment (DTA). The thesis presents two formulations to on-line calibration: 1) The classical statespace ...

  5. Active sensing based cooperative target tracking using UAVs in an urban area

    Microsoft Academic Search

    Lin Wang; Fei Su; Huayong Zhu; Lincheng Shen

    2010-01-01

    To the problem of cooperative ground moving target tracking using UAVs in an urban area, a novel method is presented, which based on target state fusion estimation and prediction, as well as on-line trajectory planning. Firstly, based on active sensing, a solving framework was presented, the formal representation and system model of cooperative target tracking using a team UAVs was

  6. On line Routing per Mobile Phone A Case on Subsequent Deliveries of Newspapers

    Microsoft Academic Search

    Thomas Bieding; Simon Görtz; Andreas Klose

    On-line routing is concerned with building vehicle routes in an on-going fashion in such a way that customer requests arriving\\u000a dynamically in time are efficiently and effectively served. An indispensable prerequisite for applying on-line routing methods\\u000a is mobile communication technology. Additionally it is of utmost importance that the employed communication system is suitable\\u000a integrated with the firm’s enterprise application system

  7. Algorithms and Lower Bounds for On-Line Learning of Geometrical Concepts

    Microsoft Academic Search

    Wolfgang Maass; György Turán

    1994-01-01

    The complexity of on-line learning is investigated for the basic classes of geometrical objects over a discrete (“digitized”) domain. In particular, upper and lower bounds are derived for the complexity of learning algorithms for axis-parallel rectangles, rectangles in general position, balls, half-spaces, intersections of half-spaces, and semi-algebraic sets. The learning model considered is the standard model for on-line learning from

  8. Research on an on-line wear condition monitoring system for marine diesel engine

    Microsoft Academic Search

    Yan Liu; Zhong Liu; Youbai Xie; Zhigang Yao

    2000-01-01

    This paper introduces a kind of on-line wear condition monitoring system for marine diesel engines. The system consists of three functions i.e. particle detecting, lubricant quality detecting and shaft torque moment and instantaneous rotation velocity detecting. The system detects wear particles in lubricant with an on-line ferrograph so as to judge wear condition of tribo-pairs of the diesel engine. A

  9. 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)

  10. On-line trace enrichment in hyphenated liquid chromatography–nuclear magnetic resonance spectroscopy

    Microsoft Academic Search

    J. A de Koning; A. C. Hogenboom; T. Lacker; S. Strohschein; K. Albert; U. A. Th Brinkman

    1998-01-01

    The potential of on-line trace enrichment combined with column liquid chromatography–nuclear magnetic resonance detection (LC–NMR) is demonstrated for the identification of hop bitter acids in hop extracts. By performing on-line solid-phase extraction on 1–5 ml of hop extract (which contains the six major hop bitter acids) the detection\\/analysis time in the stopped-flow detection mode could be reduced 4-fold, from 60

  11. 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

  12. On-line characterization of particle size during an ultrafine wet grinding process

    Microsoft Academic Search

    C. Bordes; F. Garcia; P. Snabre; C. Frances

    2002-01-01

    The present paper reports experimental results relative to the on-line characterization of particle size during a wet grinding process—thanks to an optical analyser (Turbiscan On-line, FORMULACTION). During batch grinding processes, the optical system, based on the multiple light scattering method, is placed in a derivative loop and the light flux is analysed to characterize the kinetics of fragmentation. In the

  13. On-Line Broker-Dealers: Conducting Compliance Reviews in Cyberspace

    Microsoft Academic Search

    Joseph M. Furey; Beth D. Kiesewetter

    2001-01-01

    Business models for broker-dealers continue to evolve amid structural changes to our capital markets and continued technological enhancements. Regardless of what business model a broker-dealer ultimately selects for itself, developing or enhancing an on-line capability will be a necessity. Federal and state laws and regulations, as well as self-regulatory organizations rules require broker-dealers to supervise their on-line trading systems and

  14. A new technique for extracting partial discharge signals in on-line monitoring with wavelet analysis

    Microsoft Academic Search

    Mingyou Hu; Xiongwei Jiang; Hengkun Xie; Zhenhuai Wang

    1998-01-01

    This paper deals with the multiresolution analysis of wavelet transform for on-line partial discharge (PD) monitoring. One of the problems of PD on-line monitoring is how to suppress strong noises such as narrow-band radio frequency noise and random noise. In recent years, wavelet transform has become a powerful tool to analyze and process signals in various science and technology fields.

  15. 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

  16. An on-line performance optimization of the Switched Reluctance Motor

    E-print Network

    Tandon, Piyush

    1996-01-01

    AN ON-LINE PERFORMANCE OPTIMIZATION OF THE SWITCHED RELUCTANCE MOTOR A Thesis by PIYUSH TANDON Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... May 1996 Major Subject: Electrical Engineering AN ON-LINE PERFORMANCE OPTIMIZATION OF THE SWITCHED RELUCTANCE MOTOR A Thesis by PIYUSH TANDON Submitted to Texas AdtM University in partial fulfillment of the requirements for the degree...

  17. The wireless sensor network node design for electrical equipment on-line monitoring

    Microsoft Academic Search

    Xiong Zhuang; Yongming Yang; Wei Ding

    2008-01-01

    In this paper, a new and efficient method is proposed by using wireless sensor networks in on-line monitoring of large electrical equipment to solve the problems of existing on-line monitoring system that wiring too complicated, causing fault diagnosing, maintaining difficulty and so on. The features are described range from CC2431 system-on-chip to TinyOS which is a wireless sensor networks operating

  18. New method for monitoring of adsorption column saturation and regeneration II: on-line measurement

    Microsoft Academic Search

    N. D. Del Vecchio; S. Barghi; S. Primak; J. E. Puskas

    2004-01-01

    A new method suitable for the on-line monitoring of adsorption column saturation\\/regeneration cycles was developed based on the discovery that the electrical resistance of packed bed adsorbents changes dramatically upon adsorption and returns to its original value upon desorption. This change can be measured reliably and reproducibly. The two systems studied on-line in real time were methyl chloride (MeCl) adsorption

  19. 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

  20. Observability Properties and Optimal Trajectories for On-line Odometry Self-Calibration

    Microsoft Academic Search

    Agostino Martinelli; Roland Siegwart

    2006-01-01

    In this paper we derive theoretical results for the problem of on-line odometry self-calibration for a mobile robot. A first series of results regards the problem of understanding if a given system (consisting of a robot with several sensors) contains the necessary information to perform the on-line self calibration of the odometry. We consider several cases corresponding to different odometry

  1. An on-line unsupervised learning machine for adaptive feature extraction

    Microsoft Academic Search

    Hong Chen; Ruey-wen Liu

    1993-01-01

    An on-line unsupervised learning machine (LEAP) for adaptive feature extraction (principal component decomposition of a stochastic process) is introduced. Some results on convergence analysis of the LEAP system are summarized. A result on the identification of a nontrivial domain of attraction for the system is given. A new application is shown. LEAP can be extended to perform on-line higher-order statistics

  2. On-line separation and preconcentration of chromium species in seawater

    Microsoft Academic Search

    J. Posta; A. Alimonti; F. Petrucci; S. Caroli

    1996-01-01

    A study was undertaken to ascertain the analytical capabilities of combined HPLC-ICP-AES with ultrasonic nebulization or HPLC-ICP-MS systems to perform on-line separation of CrIII-CrVI and on-line preconcentration of CrVI. Tetrabutylammonium bromide was used as the ion-pair forming agent and a reverse phase C18 column was used for separation. By optimizing the conditions of separation and preconcentration as well as plasma

  3. Automated Medical Citation Records Creation for Web-Based On-Line Journals

    Microsoft Academic Search

    Daniel X. Le; Loc Q. Tran; Joseph Chow; Jongwoo Kim; Susan E. Hauser; Chan W. Moon; George R. Thoma

    2001-01-01

    With the rapid expansion and utilization of the Internet and Web technologies, there is an increasing number of on-line medical journals. On-line journals pose new challenges in the areas of automated document analysis and content extraction, database citation records creation, data mining, and other document related applications. New techniques are needed to capture, classify, analyze, extract, modify, and reformat Web-based

  4. New type of pulse current sensors for on-line partial discharge monitoring

    Microsoft Academic Search

    Fang Qiongl; Xu Yang; Coa Xiaolong; Geng Fenghui; Ding Rui; Lu Gang

    2003-01-01

    Pulse current sensors are widely used to extract partial discharge (PD) signals from transformers for on-line PD measurement, and excellent pulse current sensors can help the measuring system to enhance the anti-interference ability for on-line monitoring. Authors did experiments on three kinds of current sensors with their inner diameter 450 mm in order to detect pulse signals of transformer bushings.

  5. 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

  6. Determination of antibiotic compounds in water by on-line SPE-LC\\/MSD

    Microsoft Academic Search

    Keun-Joo Choi; Sang-Goo Kim; Chang-won Kim; Seung-Hyun Kim

    2007-01-01

    This study attempts to provide an improved approach for the analysis of antibiotics, which normally exist at low concentration in complex matrices such as receiving streams of wastewater treatment plant discharge. The analytical method developed in this study combines an existing pretreatment technique of solid-phase extraction (SPE) with liquid chromatography mass spectrometry (LC\\/MSD) through on-line connection. The on-line connection suppressed

  7. On-line monitoring of intrinsic PEEP in ventilator-dependent patients

    Microsoft Academic Search

    G. NUCCI; M. MERGONI; C. BRICCHI; G. POLESE; C. COBELLI; A. ROSSI

    2000-01-01

    belli, and A. Rossi. On-line monitoring of intrinsic PEEP in ventilator-dependent patients. J Appl Physiol 89: 985-995, 2000.—Measurement of the intrinsic positive end-expiratory pressure (PEEPi) is important in planning the management of ventilated patients. Here, a new recursive least squares method for on-line monitoring of PEEPi is proposed for me- chanically ventilated patients. The procedure is based on the first-order

  8. On-Line Processing of Unidirectional Fiber Composites Using Radiative Heating: I. Model

    Microsoft Academic Search

    Bih-Cherng Chern; Tess J. Moon; John R. Howell

    2002-01-01

    Thermal radiation is a clean, flexible, efficient and effective means to supply energy to process a composite on-line. Radiative transfer in high-fiberdensity, unidirectional composites is complex, if analyzed completely. A detailed thermal model for on-line processing of unidirectional fiber composites by surface or volumetric radiative heating is presented. The physical geometry and imposed thermal and radiative boundary conditions correspond to

  9. 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

  10. Evaluation of an on-line adaptive gesture interface with command prediction

    Microsoft Academic Search

    Xiang Cao; Ravin Balakrishnan

    2005-01-01

    We present an evaluation of a hybrid gesture interface framework that combines on-line adaptive gesture recognition with a command predictor. Machine learning techniques enable on-line adaptation to differences in users' input patterns when making gestures, and exploit regularities in command sequences to improve recognition performance. A prototype using 2D single-stroke gestures was implemented with a minimally intrusive user interface for

  11. Off\\/on-line FRA condition monitoring technique for power transformer

    Microsoft Academic Search

    S. Birlasekaran; Fred Fetherston

    1999-01-01

    This letter presents a novel and sensitive frequency response analysis (FRA) technique for off\\/on-line condition monitoring of expensive power apparatus. The main objective is to investigate the applicability of this predictive maintenance technique to diagnosing power transformer failures, to characterize the transformer in a frequency plane for safe operation, and to develop on-line monitoring technique. The effectiveness of this technique

  12. On-line identification of non-linear hysteretic structures using an adaptive tracking technique

    Microsoft Academic Search

    Jann N. Yang; Silian Lin

    2004-01-01

    System identification and damage detection based on vibration data have received considerable attention recently because of their importance to structural health monitoring. Various technical approaches have been proposed in the literature; however, the on-line identification of the changes of parameters for non-linear structures due to damages is still a challenging problem. In this paper, we propose an on-line adaptive tracking

  13. 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.

  14. Solid-state Marx based two-switch voltage modulator for the On-Line Isotope Mass Separator accelerator at the European Organization for Nuclear Research

    NASA Astrophysics Data System (ADS)

    Redondo, L. M.; Silva, J. Fernando; Canacsinh, H.; Ferrão, N.; Mendes, C.; Soares, R.; Schipper, J.; Fowler, A.

    2010-07-01

    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.

  15. Solid-state Marx based two-switch voltage modulator for the On-Line Isotope Mass Separator accelerator at the European Organization for Nuclear Research.

    PubMed

    Redondo, L M; Silva, J Fernando; Canacsinh, H; Ferrão, N; Mendes, C; Soares, R; Schipper, J; Fowler, A

    2010-07-01

    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. PMID:20687749

  16. Comparison of the safety of drug delivery via HFA- and CFC-metered dose inhalers in CAO.

    PubMed

    Huchon, G; Hofbauer, P; Cannizzaro, G; Iacono, P; Wald, F

    2000-04-01

    The objective of this study was to compare the long-term safety of a fixed combination of fenoterol hydrobromide (50 microg) and ipratropium bromide (20 microg) delivered using a metered dose inhaler (MDI) formulated with a non-chlorinated propellant, hydrofluoroalkanel34a (HFA-MDI), with delivery using the conventional chlorofluorocarbon propellant (CFC-MDI, Berodual/Bronchodual). The study was designed according to Safety Assessment of Marketed Medicines (SAMM) guidelines, to reflect as far as possible the use of MDls under normal prescribing conditions. Two thousand and twenty-seven patients with chronic airways obstruction (CAO) were enrolled from 99 centres in France, 95 centres in Germany and 24 centres in Italy. Following a 2-week run-in period, patients were randomized on a 2:1 basis (1,348 patients to HFA-MDI, 679 patients to CFC-MDI) to receive a flexible dose regimen of the combination (2 puffs, 2-4 times a day, as prescribed by the investigator) during a 12-week open label phase. The overall incidence of adverse events was comparable between both groups. In addition, the incidence of respiratory side effects was also similar, with CAO exacerbations or bronchitis the most frequently recorded events. The safety profile of the HFA formulation was comparable to those of the marketed CFC-MDIs used in Germany and France/Italy. No clinically significant differences were detected between HFA134a or CFC driven inhalers on the switch from CFC- to HFA-MDI (2 weeks before randomisation versus 2 weeks after randomization). There was a trend for taste complaints to be reported more frequently by patients in the HFA-MDI group (0.7% before randomization versus 3.4% after randomization). This, however, was an expected finding as the HFA134a formulation does have a different taste to the CFC formulation. No difference between formulations was observed in the incidences of coughing or paradoxical bronchospasm. The incidence of falls in FEV1 >15% within 15 min following inhalation at each of the clinic visits was 1.2% for both CFC- and HFA-MDIs. In conclusion, administration of a fenoterol/ipratropium bromide combination via hydrofluoroalkane-metered dose inhaler is as safe as delivery by the currently available chlorofluorocarbon-metered dose inhaler, in an extended population of patients with CAO under normal prescribing conditions. PMID:10780756

  17. Why do people play on-line games? An extended TAM with social influences and flow experience

    Microsoft Academic Search

    Chin-Lung Hsu; Hsi-Peng Lu

    2004-01-01

    On-line games have been a highly profitable e-commerce application in recent years. The market value of on-line games is increasing markedly and number of players is rapidly growing. The reasons that people play on-line games is an important area of research. This study views on-line games as entertainment technology. However, while most past studies have focused on task-oriented technology, predictors

  18. Genomic Variants of ATF3 in Patients With Hypospadias Nicolas Kalfa, Benchun Liu, Ophir Klein, Ming-Hsieh Wang, Mei Cao and Laurence S. Baskin*

    E-print Network

    Klein, Ophir

    Genomic Variants of ATF3 in Patients With Hypospadias Nicolas Kalfa, Benchun Liu, Ophir Klein, Ming-Hsieh Wang, Mei Cao and Laurence S. Baskin* From the Center for the Study and Treatment of Hypospadias expressed during genital development, could be implicated in the etiology of hypospadias. ATF3 is up

  19. 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

  20. 1930 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 46, NO. 12, DECEMBER 2001 [24] Y. Y. Cao, J. Lames, and Y. X. Sun, "Static output feedback stabilization

    E-print Network

    Fridman, Emilia

    1930 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 46, NO. 12, DECEMBER 2001 [24] Y. Y. Cao, J a linearized model with distributed delay for the feeding system and the combustion chamber in a liquid mono- propellant rocket motor with pressure feeding. In this model a non- steady flow was assumed and nonuniform

  1. 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 ...

  2. DETERMINATION DE LA POSITION DES ATOMES D'HYDROGNE DANS L'HYDROGRINAT Al2O3, 3CaO, 6H2O

    E-print Network

    Paris-Sud XI, Université de

    100 °C. Un spectre de résonance magnétique nucléaire a été enregistré sur l'aluminate en poudre ; le of water at 100 °C. A nuclear magnetic résonance spectrum of the powdered aluminate was recorded cristallographique d 3~ 0, ~). Dans l'aluminate 3CaO, ce site ne comporte pas d'atomes. Les quatre atomes d

  3. LUSTER: Wireless Sensor Network for Environmental Research L. Selavo, A. Wood, Q. Cao, T. Sookoor, H. Liu, A. Srinivasan, Y. Wu, W. Kang,

    E-print Network

    Stankovic, John A.

    LUSTER: Wireless Sensor Network for Environmental Research L. Selavo, A. Wood, Q. Cao, T. Sookoor, H. Liu, A. Srinivasan, Y. Wu, W. Kang, J. Stankovic, D. Young, J. Porter Department of Computer Commonwealth University University of Virginia {selavo|wood|qc9b|sookoor|hl4d|av3b|yw5s|wk5f

  4. Highly unidirectional InAs/InGaAs/GaAs quantum-dot ring lasers Hongjun Cao, Hui Deng, Hai Ling, Chiyu Liu, Vladimir A. Smagley,

    E-print Network

    New Mexico, University of

    Highly unidirectional InAs/InGaAs/GaAs quantum-dot ring lasers Hongjun Cao, Hui Deng, Hai Ling 2005 We report fabrication and characterization of semiconductor ring lasers with quantum-dot active region. The InAs/InGaAs/GaAs "dots-in-a-well" ridge-waveguide ring lasers are monolithically integrated

  5. Online Testing Framework for Web Services Composition Tien-Dung Cao1, Patrick Felix1, Richard Castanet1 and Ismail Berrada2

    E-print Network

    Paris-Sud XI, Université de

    Online Testing Framework for Web Services Composition Tien-Dung Cao1, Patrick F´elix1, Richard Rochelle, France. Email: ismail.berrada@univ-lr.fr Abstract--Testing conceptually consists of three activities: test case generation, test case execution and verdict assignment. Using online testing, test

  6. Testing Web Services Composition using the TGSE Tool Tien-Dung Cao1, Patrick Felix1, Richard Castanet1 and Ismail Berrada2

    E-print Network

    Testing Web Services Composition using the TGSE Tool Tien-Dung Cao1, Patrick F´elix1, Richard Rochelle, France. Email: ismail.berrada@univ-lr.fr Abstract This paper proposes an approach to test (actively and passively) Web services composition described in BPEL using TGSE (Test Generation, Simulation

  7. A Progress Report on Flexible Neurotransmitters Sensors H. Cao, C. M. Nguyen, A-L. Li, Y. Peng, and J-C. Chiao

    E-print Network

    Chiao, Jung-Chih

    A Progress Report on Flexible Neurotransmitters Sensors H. Cao, C. M. Nguyen, A-L. Li, Y. Peng, and J-C. Chiao Introduction: L-glutamate, which is the most abundant excitatory neurotransmitter in vivo. In this work, the progress on our implantable probes for sensing neurotransmitters and recording

  8. Growth of Thin InAlP Native Oxides for GaAs Metal-Oxide-Semiconductor Devices Mr. Ying Cao1

    E-print Network

    Growth of Thin InAlP Native Oxides for GaAs Metal-Oxide-Semiconductor Devices Mr. Ying Cao1 ; Ms thermal native oxides towards thicknesses suitable for use in GaAs metal-oxide-semiconductor (MOS) devices, we observed that thin 7 nm oxide films showed Schottky-diode-like behavior with relatively large

  9. Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 1 Chapter 2: Hardware Sensor Mote

    E-print Network

    Hu, Fei

    , CRC Press Page 1 Chapter 2: Hardware Sensor Mote Architecture and Design In this chapter, we;Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press, CRC Press Page 3 Signal Processing) chips. After receiving those raw analog data, a CPU must

  10. Analysis of the kinetic slowing down during carbonation of CaO by CO2 Lydie Rouchon, Loc Favergeon, Michle Pijolat

    E-print Network

    Paris-Sud XI, Université de

    ,5], chemical heat pump [6-9], energy's storage [10-11], reaction integrated gasification process for H2 cause of climate change [1]. So, decrease of CO2 emitted by large industrial combustion sources or power at an industrial scale [3]. CaO (s) + CO2 (g) CaCO3 (s) (R1) This carbonation reaction has been studied from

  11. L. Cao, H. Sihler, U. Platt and E. Gutheil: Chemical mechanisms for ozone depletion and halogen release: Supplement 1 1 Chemical reaction mechanisms

    E-print Network

    Meskhidze, Nicholas

    release: Supplement 1 1 Chemical reaction mechanisms: Mechanism for bromine containing species: Reaction kL. Cao, H. Sihler, U. Platt and E. Gutheil: Chemical mechanisms for ozone depletion and halogen [(molec. cm-3 )1-n s-1 ] Reaction order n Reference Reaction No. O3 +h O(1 D)+O2 4.70 10-7 1 Lehrer et al

  12. Chlorophyll antenna size adjustments by irradiance in Dunaliella salina involve coordinate regulation of chlorophyll a oxygenase ( CAO ) and Lhcb gene expression

    Microsoft Academic Search

    Tatsuru Masuda; Ayumi Tanaka; Anastasios Melis

    2003-01-01

    To elucidate the mechanism of irradiance-dependent adjustments in the chlorophyll antenna size of photosynthesis, we addressed the regulation of expression of genes encoding a variety of chlorophyll biosynthesis enzymes and that of the Lhcb genes in the model organism Dunaliella salina. Among the chlorophyll biosynthesis enzymes tested, only the chlorophyll a oxygenase (CAO) gene responded to changes in the level

  13. 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

    NUMERICAL 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 of a simplified PDE model for simulating air flow and heat transfer, with the aim of gaining experience

  14. Targeted ?-Therapy

    PubMed Central

    Brechbiel, Martin W.

    2008-01-01

    Monoclonal antibodies have become a viable strategy for the delivery of therapeutic, particle emitting radionuclides specifically to tumor cells to either augment anti-tumor action of the native antibodies or to solely take advantage of their action as targeting vectors. Proper and rational selection of radionuclide and antibody combinations is critical to making radioimmunotherapy (RIT) a standard therapeutic modality due to the fundamental and significant differences in the emission of either ?- and ?-particles. The ?-particle has a short path length (50-80 ?m) that is characterized by high linear energy transfer (?100 keV/?m). Actively targeted ?-therapy potentially offers a more specific tumor cell killing action with less collateral damage to the surrounding normal tissues than ß-emitters. These properties make targeted ?-therapy appropriate therapies to eliminate of minimal residual or micrometastatic disease. RIT using ?-emitters such as 213Bi, 211At, 225Ac, and others has demonstrated significant activity in both in vitro and in vivo model systems. Limited numbers of clinical trials have progressed to demonstrate safety, feasibility, and therapeutic activity of targeted ?-therapy, despite having to traverse complex obstacles. Further advances may require more potent isotopes, additional sources and more efficient means of isotope production. Refinements in chelation and/or radiolabeling chemistry combined with rational improvements of isotope delivery, targeting vectors, molecular targets, and identification of appropriate clinical applications remains as active areas of research. Ultimately, randomized trials comparing targeted ?-therapy combined with integration into existing standard of care treatment regimens will determine the clinical utility of this modality. PMID:17992276

  15. Enhancing communication skills for pediatric visits through on-line training using video demonstrations

    PubMed Central

    Kemper, Kathi J; Foy, Jane M; Wissow, Larry; Shore, Steve

    2008-01-01

    Background Training in communication skills for health professionals is important, but there are substantial barriers to individual in-person training for practicing clinicians. We evaluated the feasibility and desirability of on-line training and sought suggestions for future courses. Methods Based on successful in-person curricula for communication skills and our previous on-line curricula, we created an on-line course consisting of 28 modules (4.75 hours CME credit) about communication skills during pediatric visits that included a mental health concern; each module included a brief case, a multiple choice question, an explanation, and a 1–2 minute video demonstrating key skills. Specific communication skills included: greeting, setting an agenda, discussing diagnosis and treatment, and managing negative interactions. The course was announced by emails in spring, 2007; the course was available on-line for 60 days; we aimed to enroll 50 clinicians. Outcomes were analyzed for those who evaluated the course within 75 days of its initial availability. Results Overall, 61 clinicians registered, of whom most were nurses (N = 24), physicians (N = 22), or psychologists or social workers (N = 12). Of the 36 (59%) clinicians who evaluated the course, over 85% agreed that all course objectives had been met; over 90% reported greater confidence in greetings and agenda-setting; and over 80% reported greater confidence in discussing diagnosis and treatment and managing negative interactions. Nearly all, 97% would recommend the course to other clinicians and trainees. Suggestions for improvement included a library of additional video vignettes and written materials to accompany the on-line training. Conclusion On-line training in communication skills for pediatric mental health visits is feasible, desirable and associated with increased confidence in key skills. Positive feedback from clinicians suggests that a comparison of on-line versus in-person training is warranted. PMID:18267028

  16. Application of an Incremental SVM Algorithm for On-line Human Recognition from Video Surveillance Using Texture and Color Features

    E-print Network

    Paris-Sud XI, Université de

    Application of an Incremental SVM Algorithm for On-line Human Recognition from Video Surveillance be adapted to on-line setting. Keywords: Video surveillance, Human recognition, Incremental Support Vector Machine, On-line multiclass classification 1. Introduction Nowadays, video surveillance is more and more

  17. AP On-Line Recruit Help Manual for Applicants Appendix OADEO, UCSD. Rev. 7/21/2010 Page 1

    E-print Network

    Russell, Lynn

    AP On-Line Recruit Help Manual for Applicants Appendix OADEO, UCSD. Rev. 7/21/2010 Page 1 University of California San Diego Academic Personnel On-Line RECRUIT Help Manual for Applicants Version 1.001 #12;AP On-Line Recruit Help Manual for Applicants Appendix OADEO, UCSD. Rev. 7/21/2010 Page 2 Recruit

  18. Student Guide to the On-Line Housing Sign-Up Process Fall 2013 Housing Sign-Up for

    E-print Network

    Zhang, Zhongfei "Mark"

    Student Guide to the On-Line Housing Sign-Up Process Fall 2013 Housing Sign-Up for Hillside Community Office to sign up Dickinson, Newing, CIW, Hinman, or Mountainview or specialty housing Communities On-Line Sign-Up March 7 - March 11 Newing, Hinman, Dickinson, CIW, Mountainview On-Line Sign-Up

  19. On-Line Retrieval System Design; Part V of Scientific Report No. ISR-18, Information Storage and Retrieval...

    ERIC Educational Resources Information Center

    Cornell Univ., Ithaca, NY. Dept. of Computer Science.

    On-line retrieval system design is discussed in the two papers which make up Part Five of this report on Salton's Magical Automatic Retriever of Texts (SMART) project report. The first paper: "A Prototype On-Line Document Retrieval System" by D. Williamson and R. Williamson outlines a design for a SMART on-line document retrieval system using…

  20. 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

  1. Strong, Ductile Magnesium-Zinc Nanocomposites MICHAEL DE CICCO, HIROMI KONISHI, GUOPING CAO, HONG SEOK CHOI,

    E-print Network

    Lakes, Roderic

    the selection of intermetallic phases. Using transmission electron microscopy (TEM), the MgZn2 phase that the MgZn2 formation resulted in elimination of other intermetallics in the Mg-4Zn nanocomposite­4] Applications that have been targeted to date include structural compo- nents in the automotive and aerospace

  2. 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.

  3. A new logic-based alarm analyzer for on-line operational environment

    SciTech Connect

    Miao, H.; Liu, C.C. [Univ. of Washington, Seattle, WA (United States). Dept. of Electrical Engineering; Sforna, M. [ENEL SpA, Cologno Monzese (Italy). Centro Ricerca di Automatica

    1996-08-01

    Existing fault diagnostic techniques for power systems are based on the operation of breakers using on-line alarm messages available from the Energy Management Systems (EMSs). Some utility systems also acquire, on-line, the information on relay operations in order to increase the precision of fault diagnosis. This paper proposes a new on-line fault diagnosis system called Intelligent Alarm Analyzer (IAA). This paper identifies the information from sequence-of-events recorders (SERs) at the substations that can be used in the EMS environment. The breaker operations together with the selected SER information provide sufficient data to help pinpoint the fault location(s) and malfunctioning device(s) on-line. The proposed IAA is capable of handling transmission line, busbar and transformer faults as well as relay and breaker malfunctions. The other unique feature of IAA is its logic-based algorithms implemented in an object-oriented software structure. Based on the testing with the actual data from ENEL, the Italian power system, the proposed implementation is highly efficient and promising for the on-line environment.

  4. 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

  5. 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

  6. 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.

  7. On-line analysis of reactor noise using time-series analysis

    SciTech Connect

    McGevna, V.G.

    1981-10-01

    A method to allow use of time series analysis for on-line noise analysis has been developed. On-line analysis of noise in nuclear power reactors has been limited primarily to spectral analysis and related frequency domain techniques. Time series analysis has many distinct advantages over spectral analysis in the automated processing of reactor noise. However, fitting an autoregressive-moving average (ARMA) model to time series data involves non-linear least squares estimation. Unless a high speed, general purpose computer is available, the calculations become too time consuming for on-line applications. To eliminate this problem, a special purpose algorithm was developed for fitting ARMA models. While it is based on a combination of steepest descent and Taylor series linearization, properties of the ARMA model are used so that the auto- and cross-correlation functions can be used to eliminate the need for estimating derivatives.

  8. 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.

  9. 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.

  10. Reversed phase HPLC-FTIR by on-line extraction and solvent elimination

    NASA Astrophysics Data System (ADS)

    Somsen, G. W.; Gooijer, Cees; Brinkman, Udo A. T.; Velthorst, Nel H.; Visser, T.

    1994-01-01

    A reversed phase LC-FTIR interface is described using on-line extraction of the aqueous effluent with a volatile organic solvent in conjunction with a solvent eliminating spray-jet device. Results are shown of the analysis of a 2. 10-4 M solution of acenaphthenequinone, phenanthrenequinone and two polar pesticides linuron and diuron. The mixture was separated with a mobile phase of acetonitrile-phosphate buffer and post-column extracted with dichloro-methane. Detection was carried out by FTIR transmission microscopy. The characteristics of the on-line extraction system are discussed in relation to results obtained from a direct deposition method.

  11. On-line analysis of cracking in cortical bone under wedge penetration.

    PubMed

    Alam, Khurshid; Kerckhofs, Greet; Mitrofanov, Alexander V; Lomov, Stepan; Wevers, Martin; Silberschmidt, Vadim V

    2012-09-01

    Understanding the mechanism of crack propagation during bone cutting is necessary for the development of realistic bone cutting models. This article studies the on-line fractural behaviour of cortical bone caused by penetration with a sharp metallic wedge mounted on an on-line loading stage within an X-ray microfocus computed tomography system. The experimental results demonstrated anisotropy in crack propagation depending on the penetration direction with regard to the longitudinal bone axis and relate the crack growth to the extent of penetration. Scanning electron microscopy is performed to analyse the mechanism of cracking in the two phase microstructure of compact bone. PMID:23025172

  12. Note: On-line weak signal detection via adaptive stochastic resonance

    NASA Astrophysics Data System (ADS)

    Lu, Siliang; He, Qingbo; Kong, Fanrang

    2014-06-01

    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.

  13. Note: On-line weak signal detection via adaptive stochastic resonance.

    PubMed

    Lu, Siliang; He, Qingbo; Kong, Fanrang

    2014-06-01

    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. PMID:24985875

  14. On Target

    NSDL National Science Digital Library

    WGBH

    2010-01-01

    In this design challenge activity, learners modify a cup so it can carry a marble down a zip line and also drop it onto a target. Learners are encouraged to brainstorm answers to design questions, build a prototype using simple materials, and test, evaluate, and redesign their structure. The activity guide includes troubleshooting tips. The related Leader's Notes guide contains information on how to connect this to NASA and aerospace engineering.

  15. Designing an on-line multimedia maintenance manual for a production environment

    E-print Network

    Brinkman, Willem-Paul

    Nowadays the term `proactive maintenance' is quite popular (Pintelon, Gelders & Van Puyvelde, 199736 Designing an on-line multimedia maintenance manual for a production environment W.P. Brinkman, V.P. Buil, R. Cullen1 , R. Gobits2 and F.L. van Nes e-mail: w.p.brinkman@tue.nl Abstract Maintenance

  16. March /April 2005 Booklet on Line Formulating Pollen Supplements Picnic Day Honey Tasting

    E-print Network

    Ferrara, Katherine W.

    __________________________________________________________________________________________ Booklet on Line Formulating Pollen Supplements Picnic Day Honey Tasting We're Number Four Emergency Queen Raising Bt Corn and Honey Bees Almonds & Honey Bees Seedy Tangerines More on Oxalic Acid Virus is lacking. We're Number Four After many years as the nation's largest honey producing state, California

  17. On-line tool breakage monitoring of vibration tapping using spindle motor current

    Microsoft Academic Search

    Guangjun Li; Huimin Lu; Gang Liu

    2008-01-01

    Input current of driving motor has been employed successfully as monitoring the cutting state in manufacturing processes for more than a decade. In vibration tapping, however, the method of on-line monitoring motor electric current has not been reported. In this paper, a tap failure prediction method is proposed to monitor the vibration tapping process using the electrical current signal of

  18. Towards the development of an on-line model error identification system for land surface models

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Due to the complexity of potential error sources in land surface models, the accurate specification of model error parameters has emerged as a major challenge in the development of effective land data assimilation systems for hydrologic and hydro-climatic applications. While several on-line procedur...

  19. Application of FastICA in on-line calibration of the current sensor's phase difference

    Microsoft Academic Search

    Guoliang Gong; Huaxiang Lu

    2012-01-01

    The performance of the current sensor in power equipment may become worse affected by the environment. In this paper, a phase difference measurement method based on FastICA is proposed to calibrate the phase difference of the current sensor on-line. However, not all source components are mutually independent in our application. Additionally, due to limitations of the algorithm, the phase errors

  20. A new on-line certificate validation method using LDAP component matching technology

    Microsoft Academic Search

    Jong Hyuk Choi; Sang Seok Lim; Kurt D. Zeilenga

    2005-01-01

    This paper presents a new on-line certificate validation method which provides higher degree of security, scalability, and interoperability than do the pre-existing approaches. It combines two basic data structures for certificate revocation, certificate revocation list (CRL) and the authenticated dictionary such as certificate revocation tree (CRT), into a single framework by utilizing the component matching enabled lightweight directory access protocol

  1. PORT: A Testbed Paradigm for On-line Digital Archive Development.

    ERIC Educational Resources Information Center

    Keeler, Mary; Kloesel, Christian

    1997-01-01

    Discusses the Peirce On-line Resource Testbed (PORT), a digital archive of primary data. Highlights include knowledge processing testbeds for digital resource development; Peirce's pragmatism in operation; PORT and knowledge processing; obstacles to archive access; and PORT as a paradigm for critical control in knowledge processing. (AEF)

  2. A method for sensorless on-line vibration monitoring of induction machines

    Microsoft Academic Search

    Caryn M. Riley; Brian K. Lin; Thomas G. Habetler; Randy R. Schoen

    1997-01-01

    This paper proposes a method for sensorless on-line vibration monitoring of induction machines based on the relationship between the current harmonics in the machine and their related vibration harmonics. Initially, the vibration monitoring system records two baseline measurements of current and vibration with the machine operating under normal conditions. The baseline data is then evaluated to determine the critical frequencies

  3. NAVE BAYSIAN CLASSIFIER FOR ON-LINE REMAINING USEFUL LIFE PREDICTION OF DEGRADING BEARINGS

    E-print Network

    Paris-Sud XI, Université de

    NAÏVE BAYSIAN CLASSIFIER FOR ON-LINE REMAINING USEFUL LIFE PREDICTION OF DEGRADING BEARINGS.zio@polimi.it In this paper, the estimation of the Residual Useful Life (RUL) of degraded thrust ball bearings is made, Residual Useful Life, Naïve Bayesian Classifier, Thrust Ball Bearings. 1. Introduction Bearings degradation

  4. An Input Estimation Approach to On-Line Two-Dimensional Inverse Heat Conduction Problems

    Microsoft Academic Search

    Pan-Chio Tuan; Ching-China Ji; Li-Wei Fong; Wen-Tang Huang

    1996-01-01

    An on-line methodology to solve two-dimensional inverse heat conduction problems (IHCP) is presented. A new input estimation approach based on the Kalman filtering technique is developed to estimate the two separate unknown heat flux inputs on the two boundaries in real time. A recursive relation between the observed value of the residual sequence with unknown heat flux and the theoretical

  5. Research on cam grinding process used on-line variable velocity based on fuzzy control theory

    Microsoft Academic Search

    Peng Baoying; Han Qiushi

    2010-01-01

    To get to constant force control is very important in non-circular parts manufacting. By gathering the singal from force transducer, adopt grinding force and its rate of change and C axis velocity to developing a fuzzy models. The fuzzy program codes is wrote in several PLC programs. By the on-line fuzzy caculating, the final C Axis velocity is got and

  6. U of A Policies and Procedures On-Line Infectious Agent Exposure Protocol

    E-print Network

    MacMillan, Andrew

    U of A Policies and Procedures On-Line Infectious Agent Exposure Protocol Human Blood, Body Fluids members of the MD Program. PROTOCOL In the event of human blood/body fluid exposure: 1. Immediately remove. For mucous membrane (eyes, nose, mouth), immediately flush area well with large amounts of water for 5

  7. U of A Policies and Procedures On-Line Technical Standards Policy

    E-print Network

    MacMillan, Andrew

    and manage health problems and provide comprehensive compassionate care to their patients. For this reasonU of A Policies and Procedures On-Line Technical Standards Policy Office of Accountability: Dean observation and perception by the use of senses and mental abilities. In particular, a student must be able

  8. On-Line Reconstruction of Vehicles In A Car Christopher Tay Meng Keat1

    E-print Network

    Paris-Sud XI, Université de

    On-Line Reconstruction of Vehicles In A Car Park Christopher Tay Meng Keat1 , C´edric Pradalier2. This is implemented on the robotic vehicle, CyCab, for navigation and mapping of the static car park environment And Mapping (SLAM). A final map consisting of the vehicle positions in the car park is obtained. Key words

  9. On-line adaptation of neuro-prostheses with neuronal evaluation signals

    E-print Network

    Kreiter, Andreas K.

    On-line adaptation of neuro-prostheses with neuronal evaluation signals K.R. Pawelzik and U Bremen - Germany E-Mail: {pawelzik,udo,davrot}@neuro.uni-bremen.de Tel +49 421 218 4521, Fax +49 421 218 source from brain regions reflecting the user's affective evaluation of the neuro

  10. An Asymptotically Optimal On-Line Algorithm for Parallel Machine Scheduling

    E-print Network

    Chou, Mabel

    Jobs arriving over time must be non-preemptively processed on one of m parallel machines, each of which running at its own speed, so as to minimize a weighted sum of the job completion times. In this on-line environment, ...

  11. 3D tracking in unknown environments using on-line keypoint learning for mobile augmented reality

    Microsoft Academic Search

    Gerhard Schall; Helmut Grabner; Michael Grabner; Paul Wohlhart; Dieter Schmalstieg; Horst Bischof

    2008-01-01

    In this paper we present a natural feature tracking algorithm based on on-line boosting used for localizing a mobile computer. Mobile augmented reality requires highly accurate and fast six degrees of freedom tracking in order to provide registered graphical overlays to a mobile user. With advances in mobile computer hardware, vision-based tracking approaches have the potential to provide efficient solutions

  12. A fast on-line generalized eigendecomposition algorithm for time series segmentation

    Microsoft Academic Search

    Yadunandana N. Rao; Jose C. Principe

    2000-01-01

    This paper presents a novel, fast converging on-line rule for generalized eigendecomposition (GED) and its application in time series segmentation. We adopt the concepts of deflation and power method to iteratively estimate the generalized eigencomponents. The algorithm is guaranteed to produce stable results. In the second half of the paper, we discuss the application of GED to segment time series.

  13. Knowledge Management in Pediatric Pain: Mapping On-Line Expert Discussions to Medical Literature

    E-print Network

    Milios, Evangelos E.

    Knowledge Management in Pediatric Pain: Mapping On-Line Expert Discussions to Medical Literature for timely access to various modalities of clinical knowledge. Keywords Knowledge Management, Pediatric Pain pain. Yet, the real- ity is that the vast majority of children's pain is managed by family physicians

  14. AN ON-LINE WIRELESS IMPACT MONITORING SYSTEM FOR LARGE SCALE COMPOSITE STRUCTURES

    E-print Network

    Boyer, Edmond

    AN ON-LINE WIRELESS IMPACT MONITORING SYSTEM FOR LARGE SCALE COMPOSITE STRUCTURES Hanfei Mei1 of the major concerns in the whole lifetime of aircraft composite structures is their susceptibility to impact damage. Aiming at the impact monitoring of large scale composite structures, this paper puts forward

  15. On-line Signature Verification Using Most Discriminating Features and Fisher Linear Discriminant Analysis (FLD)

    Microsoft Academic Search

    Muhammad Talal Ibrahim; Matthew J. Kyan; Ling Guan

    2008-01-01

    In this work, we employ a combination of strategies for partitioning and detecting abnormal fluctuations in the horizontal and vertical trajectories of an on-line generated signature profile. Alternative partitions of these spatial trajectories are generated by splitting each of the related angle, velocity and pressure profiles into two regions representing both high and low activity. The overall process can be

  16. On-Line Selection of Discriminative Tracking Features Robert T. Collins and Yanxi Liu

    E-print Network

    experiments are run to determine which fixed feature space to use ­ a good example is work on head trackingOn-Line Selection of Discriminative Tracking Features £ Robert T. Collins and Yanxi Liu Carnegie multiple fea- ture spaces while tracking, and for adjusting the set of fea- tures used to improve tracking

  17. On-line preconcentration and separation of neutral and charged aromatic compounds by ion interaction chromatography

    Microsoft Academic Search

    Corrado Sarzanini; Maria Concetta Bruzzoniti; Giovanni Sacchero; Edoardo Mentasti

    1996-01-01

    An ion-interaction based chromatographic procedure was developed for the on-line preconcentration, separation and UV detection of benzene and naphthalene sulphonic derivatives having different charges. The retention behaviour of the species was studied on an octylsilica stationary phase, using cetyltrimethylammonium chloride (CTACl) as ion pair reagent and methanol as organic modifier in the presence of sodium chloride. The effect of CTACl,

  18. Experience-Based and On-Line Categorization of Objects in Early Infancy

    ERIC Educational Resources Information Center

    Bornstein, Marc H.; Mash, Clay

    2010-01-01

    What processes do infants employ in categorizing? Infants might categorize on line as they encounter category-related entities; alternatively, infants might depend on prior experience with entities in formulating categories. These alternatives were tested in forty-four 5-month-olds. Infants who were familiarized in the laboratory with a category…

  19. The Impact of Diversity on On-line Ensemble Learning in the Presence of Concept Drift

    E-print Network

    Yao, Xin

    1 The Impact of Diversity on On-line Ensemble Learning in the Presence of Concept Drift Leandro L algorithms often have to operate in the presence of concept drift (i.e., the concepts to be learnt can change with time). This paper presents a new categorization for concept drift, separating drifts according

  20. Lensed optical fiber sensors for on-line measurement of flow

    Microsoft Academic Search

    Sallehuddin Ibrahim; Robert Garnett Green; Ken Dutton; Ruzairi Abdul Rahim

    2002-01-01

    The paper describes a system using lensed optical fiber sensors that are arranged in the form of two orthogonal projections. The sensors are placed around a process vessel for upstream and downstream measurements. The purpose of the system is for on-line monitoring of particles and droplets being conveyed by a fluid. The lenses were constructed using a custom heating fixture.