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1

Intense 31-35Ar beams produced with a nanostructured CaO target at ISOLDE  

NASA Astrophysics Data System (ADS)

At the ISOLDE facility at CERN, thick targets are bombarded with highly energetic pulsed protons to produce radioactive ion beams (RIBs). The isotopes produced in the bulk of the material have to diffuse out of the grain and effuse throughout the porosity of the material to a transfer line which is connected to an ionizer, from which the charged isotopes are extracted and delivered for physics experiments. Calcium oxide (CaO) powder targets have been used to produce mainly neutron deficient argon and carbon RIBs over the past decades. Such targets presented unstable yields, either decaying over time or low from the beginning of operation. These problems were suspected to come from the degradation of the target microstructure (sintering due to high temperature and/or high proton intensity). In this work, a CaO microstructural study in terms of sintering was conducted on a nanostructured CaO powder synthesized from the respective carbonate. Taking the results of this study, several changes were made at ISOLDE in terms of the CaO target production, handling and operation in order to produce and maintain the nanostructured CaO. The new target, the first nanostructured target to be operated at ISOLDE, showed improved yields of (exotic) Ar and more importantly a stable yield over the whole operation time, while operating with lower temperatures. This contradicts the ISOL paradigm of using the highest possible temperature regardless of the target's microstructure degradation.

Ramos, J. P.; Gottberg, A.; Mendonça, T. M.; Seiffert, C.; Senos, A. M. R.; Fynbo, H. O. U.; Tengblad, O.; Briz, J. A.; Lund, M. V.; Koldste, G. T.; Carmona-Gallardo, M.; Pesudo, V.; Stora, T.

2014-02-01

2

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

SciTech Connect

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 have been performed using the UNISOR facility at HRIBF. For {sup 70}As the measured efficiency is 0.8 {+-} 0.3% with a hold-up time of 3.6 {+-} 0.3 hours as measured with {sup 72}As at a target temperature of 1,270 C. For {sup 17}F the efficiency for Al{sup 17}F is 0.0024 {+-} 0.0008% with a hold-up time of 16.4 {+-} 0.8 m as measured with Al{sup 18}F at a target temperature of 1,470 C.

Carter, H.K.; Kormicki, J.; Stracener, D.W.; Breitenbach, J.B. [Oak Ridge Inst. for Science and Education, TN (United States); Blackmon, J.C. [Univ. of North Carolina, 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). A.W. Wright Nuclear Structure Lab.

1996-12-31

3

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

E-print Network

Audience Selection for On-line Brand Advertising: Privacy-friendly Social Network Targeting Foster describes and evaluates privacy-friendly methods for extracting quasi-social networks from browser behavior-generated content, privacy This work was conducted while the authors were at Media6 . Foster Provost thanks NEC

Provost, Foster

4

Chemical investigations of isotope separation on line target units for carbon and nitrogen beams  

SciTech Connect

Radioactive ion beams (RIBs) are of significant interest in a number of applications. Isotope separation on line (ISOL) facilities provide RIB with high beam intensities and good beam quality. An atom that is produced within the ISOL target will first diffuse out from the target material. During the effusion towards the transfer line and into the ion source the many contacts with the surrounding surfaces may cause unacceptable delays in the transport and, hence, losses of the shorter-lived isotopes. We performed systematic chemical investigations of adsorption in a temperature and concentration regime relevant for ISOL targets and ion source units, with regard to CO{sub x} and NO{sub x} on Al{sub 2}O{sub 3} and SiO{sub 2}. These materials are potential construction materials for the above-mentioned areas. Off-line and on-line tests have been performed using a gas thermochromatography setup with radioactive tracers. The experiments were performed at the production of tracers for atmospheric chemistry (PROTRAC) facility at the Paul Scherrer Institute in Villigen, Switzerland.

Fraanberg, H.; Ammann, M.; Gaeggeler, H.W.; Koester, U. [ISOLDE, CERN, 1211 Geneva 23 (Switzerland) and Paul Scherrer Institute, 5232 Villigen PSI (Switzerland); Paul Scherrer Institute, 5232 Villigen PSI (Switzerland); Paul Scherrer Institute, 5232 Villigen PSI (Switzerland) and University of Berne, 3008 Berne (Switzerland); ISOLDE, CERN, 1211 Geneva 23 (Switzerland)

2006-03-15

5

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

PubMed Central

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

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

1999-01-01

6

An on-line learning tracking of non-rigid target combining multiple-instance boosting and level set  

NASA Astrophysics Data System (ADS)

Visual tracking algorithms based on online boosting generally use a rectangular bounding box to represent the position of the target, while actually the shape of the target is always irregular. This will cause the classifier to learn the features of the non-target parts in the rectangle region, thereby the performance of the classifier is reduced, and drift would happen. To avoid the limitations of the bounding-box, we propose a novel tracking-by-detection algorithm involving the level set segmentation, which ensures the classifier only learn the features of the real target area in the tracking box. Because the shape of the target only changes a little between two adjacent frames and the current level set algorithm can avoid the re-initialization of the signed distance function, it only takes a few iterations to converge to the position of the target contour in the next frame. We also make some improvement on the level set energy function so that the zero level set would have less possible to converge to the false contour. In addition, we use gradient boost to improve the original multi-instance learning (MIL) algorithm like the WMILtracker, which greatly speed up the tracker. Our algorithm outperforms the original MILtracker both on speed and precision. Compared with the WMILtracker, our algorithm runs at a almost same speed, but we can avoid the drift caused by background learning, so the precision is better.

Chen, Mingming; Cai, Jingju

2013-10-01

7

Miniaturized DNA aptamer-based monolithic sorbent for selective extraction of a target analyte coupled on-line to nanoLC.  

PubMed

A complete characterization of a novel target-specific DNA aptamer-based miniaturized solid phase extraction (SPE)-sorbent coupled on-line to nanoLC is presented. A miniaturized oligosorbent (mOS) was prepared via the in situ sol-gel synthesis of a hybrid organic-inorganic monolith in 100 ?m i.d. capillary columns using tetraethoxysilane and 3-aminopropyltriethoxysilane as precursors, followed by covalent binding of a 5'-amino-modified DNA aptamer with a C12 spacer arm specific for a molecule of small molecular weight. Ochratoxin A (OTA), one of the most abundant naturally occurring mycotoxins, was chosen as model analyte to demonstrate the principle of such an approach. The mOS was coupled on-line to RP-nanoLC-LIF. Selective extraction of OTA on several mOSs was demonstrated with an average extraction recovery above 80 % when percolating spiked binding buffer and a low recovery on control monoliths grafted with a non-specific aptamer. Reproducibility of mOSs preparation was highlighted by comparing extraction yields. Otherwise, the mOSs demonstrated no cross-reactivity towards an OTA structural analogue, i.e., ochratoxin B. Due to the high specific surface area of the hybrid silica-based monolith, the coverage density of DNA aptamers covalently immobilized in the capillaries was very high and reached 6.27 nmol ?L(-1), thus leading to a capacity above 5 ng of OTA. This miniaturized device was then applied to the selective extraction of OTA from beer samples. It revealed to be effective in isolating OTA from this complex matrix, thus improving the reliability of its analysis at the trace level. PMID:25335821

Brothier, Fabien; Pichon, Valérie

2014-12-01

8

Clayton Municipal Airport (CAO) Pavement Condition and Analysis  

E-print Network

;........................................................................................4. Recommend Pavement Design 19 .........................................Table 5. Design Aircraft Used Airport (CAO) Aircraft Operations (2005-2009) 5 .....Table 2. Clayton Municipal Airport (CAO) Predicted Aircraft Operations 2007-2027 6 ..................Figure 2. Clayton Municipal Airport (CAO) PCI Branch Map

Cal, Mark P.

9

CAOS, COMPLEJIDAD E INTERDISCIPLINARIEDAD Miguel A. F. Sanjun  

E-print Network

CAOS, COMPLEJIDAD E INTERDISCIPLINARIEDAD Miguel A. F. Sanjuán Grupo de Dinámica No Lineal, Teoría del Caos y Sistemas Complejos Departamento de Física Universidad Rey Juan Carlos 28933 Móstoles caos, complejidad e interdisciplinariedad han fructificado con creces. #12;1. INTRODUCCION Desde

Rey Juan Carlos, Universidad

10

On-Line Expeditions  

NSDL National Science Digital Library

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

11

Psychiatry On-Line  

NSDL National Science Digital Library

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

1994-01-01

12

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.

13

Tech OnLine  

NSDL National Science Digital Library

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.

1996-01-01

14

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

SciTech Connect

An original approach to the time behavior of an isotope-separator-on-line production system is proposed in the case of a production system where the target and the ion source are connected through a conductance much larger than that of the exit hole of the source. One major goal of this article is to derive the analytical expression of the response time of the system for noble gases from statistical parameters only, which can be deduced from a few simple measurements. The validity limits of the expression of the total efficiency are given, and the calculations are compared to the results obtained at GANIL during operation of SPIRAL 1, using a carbon target close coupled to a multicharged electron cyclotron resonance ion source. The final analytical expression for the total efficiency shows that the usual product of diffusion efficiency, effusion efficiency, and ionization efficiency cannot be applied in our case. We show how it is possible to predict the atom-to-ion transformation efficiency for radioactive isotopes of noble gas using response times measured for stable isotopes.

Jardin, P.; Eleon, C.; Farabolini, W.; Boilley, D.; Dubois, M.; Gaubert, G.; Cornell, J.C.; Huet-Equilbec, C.; Lecesne, N.; Leroy, R.; Pacquet, J.Y.; Saint Laurent, M.G.; Villari, A.C.C. [Grand Accelerateur National d' Ions Lourds (GANIL), Boulevard Henri Becquerel, B. P. 55027, 14076 Caen Cedex 5 (France); Centre d' Etudes Nucleaires (CEN) de Saclay, 91191 Gif sur Yvette Cedex (France); Grand Accelerateur National d' Ions Lourds (GANIL), Boulevard Henri Becquerel, B. P. 55027, 14076 Caen Cedex 5 (France)

2006-03-15

15

On-line surfactant monitoring  

SciTech Connect

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.

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

16

On-line Planning Simulation  

Microsoft Academic Search

MESS is a substrate for building simulation environ- ments suitable for testing plans and on-line or real- time planners. The article describes the design of MEss, how simulations are built and how on-line plan- ners integrate with the substrate. MEss supports ac- tivities, defined as processes over some time interval, and interactions between activities and other simu- lation events. MEss

Scott D. Anderson; Paul R. Cohen

1996-01-01

17

Bringing Recruitment On-Line.  

ERIC Educational Resources Information Center

Proper planning and the use of current computer technology can provide a mechanism not only for coordinating and directing a broad-based recruitment program, but also for compiling a detailed database on applicant and prospective student markets. At West Shore Community College, these objectives were addressed through the development of an on-line…

Desiderio, John

18

On-Line Retrieval II.  

ERIC Educational Resources Information Center

This report is concerned with the implementation of two interrelated computer systems: an automatic document analysis and classification package, and an on-line interactive information retrieval system which utilizes the information gathered during the automatic classification phase. Well-known techniques developed by Salton and Dennis have been…

Kurtz, Peter; And Others

19

On-line system for NMR polarization measurement  

Microsoft Academic Search

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

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

1995-01-01

20

MUSLIM WOMEN ON-LINE  

Microsoft Academic Search

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

SUSAN BASTANI

2001-01-01

21

Introduction and motivation ARTIST and CAOS online tests  

E-print Network

and CAOS assessments in introductory statistics courses Nicholas J. Horton Smith College July 31, 2007, JSM sponsored project delMas, R., Garfield, J., Ooms, A., & Chance, B. (in press). Assessing students conceptual assessments multiple choice questions tap conceptual understanding of key topics provide quick feedback

Horton, Nicholas

22

Multiple Feature Fusion by Subspace Learning Yun Fu, Liangliang Cao  

E-print Network

the emergence of extensive multimedia data, feature fusion has been more and more important for image and video.7 [Image Processing and Computer Vision]: Fea- ture Measurement--feature representation, projections; I.5Multiple Feature Fusion by Subspace Learning Yun Fu, Liangliang Cao Beckman Institute University

Guo, Guodong

23

Naar een nieuwe Cao Nederlandse Universiteiten: medewerkersvoorkeuren in beeld  

E-print Network

Marijke von Bergh Michel Dückers IVA beleidsonderzoek en advies #12;ii Naar een nieuwe Cao Nederlandse Universiteiten: medewerkersvoorkeuren in beeld Uitgever: IVA Warandelaan 2 Postbus 90153 5000 LE Tilburg Telefoonnummer: 013-4668466 Telefax: 013-4668477 IVA is gelieerd aan Tilburg University © 2012 IVA Niets uit deze

Twente, Universiteit

24

Metrology from Vertical Objects Xiaochun Cao and Hassan Foroosh  

E-print Network

Metrology from Vertical Objects Xiaochun Cao and Hassan Foroosh School of Computer Science-parallel lines. 1 Introduction Metrology from uncalibrated images is becoming of increasing interest for many, Criminisi et al. [3] proposed an approach for single view metrology, and showed that affine scene structure

Foroosh, Hassan

25

PHENIX on-line systems  

NASA Astrophysics Data System (ADS)

The PHENIX On-Line system takes signals from the Front End Modules (FEM) on each detector subsystem for the purpose of generating events for physics analysis. Processing of event data begins when the Data Collection Modules (DCM) receive data via fiber-optic links from the FEMs. The DCMs format and zero suppress the data and generate data packets. These packets go to the Event Builders (EvB) that assemble the events in final form. The Level-1 trigger (LVL1) generates a decision for each beam crossing and eliminates uninteresting events. The FEMs carry out all detector processing of the data so that it is delivered to the DCMs using a standard format. The FEMs also provide buffering for LVL1 trigger processing and DCM data collection. This is carried out using an architecture that is pipelined and deadtimeless. All of this is controlled by the Master Timing System (MTS) that distributes the RHIC clocks. A Level-2 trigger (LVL2) gives additional discrimination. A description of the components and operation of the PHENIX On-Line system is given and the solution to a number of electronic infrastructure problems are discussed.

Adler, S. S.; Allen, M.; Alley, G.; Amirikas, R.; Arai, Y.; Awes, T. C.; Barish, K. N.; Barta, F.; Batsouli, S.; Belikov, S.; Bennett, M. J.; Bobrek, M.; Boissevain, J. G.; Boose, S.; Britton, C.; Britton, L.; Bryan, W. L.; Cafferty, M. M.; Carey, T. A.; Chang, W. C.; Chi, C. Y.; Chiu, M.; Cianciolo, V.; Cole, B. A.; Constantin, P.; Cook, K. C.; Cunitz, H.; Desmond, E. J.; Ebisu, K.; Efremenko, Y. V.; El Chenawi, K.; Emery, M. S.; Engo, D.; Ericson, N.; Fields, D. E.; Frank, S.; Frantz, J. E.; Franz, A.; Frawley, A. D.; Fried, J.; Gannon, J.; Gee, T. F.; Gentry, R.; Giannotti, P.; Gustafsson, H.-A.; Haggerty, J. S.; Hahn, S.; Halliwell, J.; Hamagaki, H.; Hansen, A. G.; Hara, H.; Harder, J.; He, X.; Heistermann, F.; Hemmick, T. K.; Hibino, M.; Hill, J. C.; Homma, K.; Jacak, B. V.; Jagadish, U.; Jia, J.; Kajihara, F.; Kametani, S.; Kamyshkov, Y.; Kandasamy, A.; Kang, J. H.; Kapustinsky, J.; Katou, K.; Kelley, M. A.; Kelly, S.; Kikuchi, J.; Kim, S. Y.; Kim, Y. G.; Kistenev, E.; Kotchetkov, D.; Kurita, K.; Lajoie, J. G.; Lenz, M.; Lenz, W.; Li, X. H.; Lin, S.; Liu, M. X.; Markacs, S.; Matathias, F.; Matsumoto, T.; Mead, J.; Mischke, R. E.; Mishra, G. C.; Moore, A.; Muniruzzamann, M.; Musrock, M.; Nagle, J. L.; Nandi, B. K.; Newby, J.; Nystrand, J.; O'Brien, E.; O'Connor, P.; Ohnishi, H.; Oskarsson, A.; Osterman, L.; Oyama, K.; Paffrath, L.; Pancake, C. E.; Pantuev, V. S.; Petridis, A. N.; Pisani, R. P.; Plagge, T.; Plasil, F.; Purschke, M. L.; Rankowitz, S.; Rao, R.; Rau, M.; Read, K. F.; Ryu, S. S.; Sakaguchi, T.; Sato, H. D.; Seto, R.; Shiina, T.; Silvermyr, D.; Simon-Gillo, J.; Simpson, M.; Sippach, W.; Skank, H. D.; Skutnik, S.; Sleege, G. A.; Smith, G. D.; Smith, M.; Stankus, P. W.; Steinberg, P.; Sugitate, T.; Sullivan, J. P.; Taketani, A.; Tamai, M.; Tanaka, Y.; Thomas, W. D.; Todd, R.; Toldo, F.; Turner, G.; Ushiroda, T.; Velkovska, J.; van Hecke, H. W.; Van Lith, M.; Villatte, L.; Von Achen, W.; Walker, J. W.; Wang, H. Q.; White, S. N.; Wintenberg, A. L.; Witzig, C.; Wood, L.; Xie, W.; Young, G. R.; Zajc, W. A.; Zhang, C.; Zhang, L.; PHEN. I. X. Collaboration

2003-03-01

26

MAC 412 -Organiza c~ao de Computadores 2.a Prova -2 de dezembro de 1998 -Prova com consulta -Dura c~ao 2h 30min  

E-print Network

arquitetura de hardware. De modo super sucinto, mostre a diferen#24;ca entre as duas nota#24;c~oes. 4. (1- cional da m#19;aquina MAC. Suponha a cria#24;c~ao de uma nova instru#24;c~ao de m#19;aquina (n#19;#16;vel

Song, Siang Wun

27

Incentives in On-Line Education  

ERIC Educational Resources Information Center

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

Oslington, Paul

2005-01-01

28

Raman spectroscopy of calcium phosphate glasses with varying CaO modifier concentrations  

Microsoft Academic Search

Raman spectroscopy has been performed on a series of calcium phosphate glasses prepared from calcium dihydrogenphosphate and CaO in which the CaO content is varied from that of the metaphosphate stoichiometry, in which the mole ratio of CaO to PâOâ is 1.00, to a stoichiometry in which the mole ratio is 1.49. Investigation of the vibrational behavior provides insight into

J. E. Pemberton; L. Latifzadeh; J. P. Fletcher; S. H. Risbud

2009-01-01

29

Supplemental On-Line Materials Supplemental on line materials 1 of 12  

E-print Network

Supplemental On-Line Materials Supplemental on line materials 1 of 12 Robotic ObservationsX: Enhanced Carbon Biomass and Export at 55S Supplemental on line materials 2 of 12 Carbon Explorer / Patch to NZ B #12;Bishop et al. SOFeX: Enhanced Carbon Biomass and Export at 55S Supplemental on line

Bishop, James K.B.

30

On-line Language Model Biasing for Statistical Machine Translation  

E-print Network

The language model (LM) is a critical component in most statistical machine translation (SMT) systems, serving to establish a probability distribution over the hypothesis space. Most SMT systems use a static LM, independent of the source language input. While previous work has shown that adapting LMs based on the input improves SMT performance, none of the techniques has thus far been shown to be feasible for on-line systems. In this paper, we develop a novel measure of cross-lingual similarity for biasing the LM based on the test input. We also illustrate an efficient on-line implementation that supports integration with on-line SMT systems by transferring much of the computational load off-line. Our approach yields significant reductions in target perplexity compared to the static LM, as well as consistent improvements in SMT performance across language pairs (English-Dari and English-Pashto). 1

Sankaranarayanan Ananthakrishnan; Rohit Prasad; Prem Natarajan

31

Steam catalysis in CaO carbonation under low steam partial pressure  

SciTech Connect

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.

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

2008-06-15

32

On-Line Case-Based Planning  

Microsoft Academic Search

Some domains, such as real-time strategy (RTS) games, pose several challenges to traditional planning and machine learning techniques. In this paper, we present a novel on-line case-based planning architecture that addresses some of these problems. Our architecture addresses is- sues of plan acquisition, on-line plan execution, interleaved planning and execution and on-line plan adaptation. We also introduce the Darmok system,

Santi Ontañón; Kinshuk Mishra; Neha Sugandh; Ashwin Ram

2010-01-01

33

On-line diagnosis of sequential systems  

NASA Technical Reports Server (NTRS)

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

Sundstrom, R. J.

1973-01-01

34

On-Line Assessment: What, Why, How.  

ERIC Educational Resources Information Center

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…

Natal, Dottie

35

Kinetic Study on Desulfurization of Hot Metal Using CaO and CaC2  

NASA Astrophysics Data System (ADS)

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

Lindström, David; Sichen, Du

2014-09-01

36

Ethan Burns (UNH) Anticipatory On-line Planning 1 / 22 Anticipatory On-line Planning  

E-print Network

Ethan Burns (UNH) Anticipatory On-line Planning ­ 1 / 22 Anticipatory On-line Planning Ethan Burns1 Formalization Hindsight Opt. Experiments Conclusion Ethan Burns (UNH) Anticipatory On-line Planning ­ 2 / 22'd s Contributions Formalization Hindsight Opt. Experiments Conclusion Ethan Burns (UNH) Anticipatory On

Ruml, Wheeler

37

Experiences with On-Line STEAMPOP  

E-print Network

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... 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...

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

38

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

SciTech Connect

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.

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

1983-11-01

39

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

NASA Astrophysics Data System (ADS)

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

Suzuki, S.; Itoh, H.

2014-12-01

40

On-line range prediction system, part 2  

NASA Technical Reports Server (NTRS)

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.

Levan, Nhan

1988-01-01

41

The EINSTEIN On-Line Service  

E-print Network

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.

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

1994-11-05

42

Graphite oxide-supported CaO catalysts for transesterification of soybean oil with methanol.  

PubMed

Graphite oxide (GO) supported CaO catalysts were prepared and successfully applied to the transesterification of soybean oil with methanol. The supports and resultant catalysts were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), N(2) adsorption, thermogravimetry (TG), X-ray photoelectron spectroscopy (XPS), temperature-programed desorption (TPD) and Fourier-transform infrared spectroscopy (FT-IR). The GO supported CaO catalysts exhibited excellent catalytic activity and were easily regenerated by simple heat-treatment. The oxygen-containing groups (i.e., hydroxyl, epoxide groups and carboxyl groups) present on the surface of GO likely act as anchoring centers for CaO. This work demonstrates that graphite oxide is an effective host material of catalytically active CaO nanoparticles for the transesterification of soybean oil with methanol to produce biodiesel. PMID:21824767

Zu, Yanhong; Tang, Jianyuan; Zhu, Wanchun; Zhang, Min; Liu, Gang; Liu, Yan; Zhang, Wenxiang; Jia, Mingjun

2011-10-01

43

Nonisothermal thermogravimetric analysis of Thai lignite with high CaO content.  

PubMed

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

Pintana, Pakamon; Tippayawong, Nakorn

2013-01-01

44

Semiclassical approximations to quantum dynamical time correlation Jianshu Cao and Gregory A. Voth  

E-print Network

Semiclassical approximations to quantum dynamical time correlation functions Jianshu Cao-6323 Received 8 September 1995; accepted 28 September 1995 Semiclassical approximations for quantum time is developed to calculate quantum time correlation functions. This approach holds considerable promise

Cao, Jianshu

45

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...

46

On-Line Construction of Suffix Trees  

Microsoft Academic Search

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

Esko Ukkonen

1995-01-01

47

On-Line Diagnosis of Unrestricted Faults  

Microsoft Academic Search

A formal model for the study of on-line diagnosis is introduced and used to investigate the diagnosis of unrestricted faults. Within this model a fault of a system S is considered to be a transformation of S into another system S' at some time r. The resulting faulty system is taken to be the system which looks like S up

John F. Meyer; Robert J. Sundstrom

1975-01-01

48

On-line controlled documents: Lessons learned  

SciTech Connect

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

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

1995-06-01

49

Software for interactive on-line conferences  

Microsoft Academic Search

A layered architecture for the implementation of real-time conferences is presented. In a real-time conference a group of users each at his or her own workstation, share identical views of on-line application information. The users cooperate in a problem solving task by interactively modifying or editing the shared view or the underlying information, and can use a voice communication channel

Sunil K. Sarin; Irene Greif

1984-01-01

50

On-line generalized Steiner problem  

Microsoft Academic Search

The Generalized Steiner Problem (GSP) is defined as follows. We are given agraph with non-negative weights and a set of pairs of vertices. The algorithm hasto construct minimum weight subgraph such that the two nodes of each pair areconnected by a path.Off-line generalized Steiner problem approximation algorithms were given in[AKR91, GW92].We consider the on-line generalized Steiner problem, in which pairs

Baruch Awerbuch; Yossi Azart; Yair Bartal

1996-01-01

51

Development of web-based support system for on-line optimization  

Microsoft Academic Search

On-line optimization is a very powerful tool that saves costs and improves the operational productivity of a chemical plant.\\u000a However, the process of on-line optimization takes too much time and cost because it needs the significant contribution of\\u000a process optimization specialists. To solve this problem, a web-based support system for online optimization is designed. The\\u000a design specifications of the target

Sungwoo Cho; Dongwoo Nam; Chonghun Han

2010-01-01

52

On-line diagnosis of unrestricted faults  

NASA Technical Reports Server (NTRS)

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.

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

1974-01-01

53

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

PubMed

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

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

2014-12-01

54

A Distributed System for Learning Programming On-Line  

ERIC Educational Resources Information Center

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

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

2012-01-01

55

On-line diagnosis of unrestricted faults  

NASA Technical Reports Server (NTRS)

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.

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

1975-01-01

56

On-line and Mobil Learning Activities  

NASA Astrophysics Data System (ADS)

Introductory college-level science courses for non-majors are critical gateways to imparting not only discipline-specific information, but also the basics of the scientific method and how science influences society. They are also indispensable for student success to degree. On-line, web-based homework (whether on computers or mobile devices) is a rapidly growing use of the Internet and is becoming a major component of instruction in science, replacing delayed feedback from a few major exams. Web delivery and grading of traditional textbook-type questions is equally effective as having students write them out for hand grading, as measured by student performance on conceptual and problem solving exams. During this presentation we will demonstrate some of the interactive on-line activities used to teach concepts and how scientists approach problem solving, and how these activities have impacted student learning. Evaluation of the activities, including formative and summative, will be discussed and provide evidence that these interactive activities significantly enhance understanding of introductory meteorological concepts in a college-level science course. More advanced interactive activities are also used in our courses for department majors, some of these will be discussed and demonstrated. Bring your mobile devices to play along! Here is an example on teaching contouring: http://profhorn.aos.wisc.edu/wxwise/contour/index.html

Ackerman, S. A.; Whittaker, T. M.; Jasmin, T.; Mooney, M. E.

2012-12-01

57

Correlation effects in MgO and CaO: Cohesive energies and lattice constants  

SciTech Connect

A recently proposed computational scheme based on local increments has been applied to the calculation of correlation contributions to the cohesive energy of the CaO crystal. Using {ital ab} {ital initio} quantum-chemical methods for evaluating individual increments, we obtain {approximately}80{percent} of the difference between the experimental and Hartree-Fock cohesive energies. Lattice constants corrected for correlation effects deviate by less than 1{percent} from experimental values, in the case of MgO and CaO. {copyright} {ital 1996 The American Physical Society.}

Doll, K.; Dolg, M. [Max-Planck-Institut fuer Physik Komplexer Systeme, D-01187 Dresden (Germany)] [Max-Planck-Institut fuer Physik Komplexer Systeme, D-01187 Dresden (Germany); Stoll, H. [Institut fuer Theoretische Chemie, Universitaet Stuttgart, D-70550 Stuttgart (Germany)] [Institut fuer Theoretische Chemie, Universitaet Stuttgart, D-70550 Stuttgart (Germany)

1996-11-01

58

Gated Treatment Delivery Verification With On-Line Megavoltage Fluoroscopy  

SciTech Connect

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.

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

59

On-line assessment of comprehension processes.  

PubMed

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

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

2009-05-01

60

On-line tritium production monitor  

DOEpatents

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.

Mihalczo, J.T.

1993-11-23

61

NASDA's Advanced On-Line System (ADOLIS)  

NASA Technical Reports Server (NTRS)

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.

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

1993-01-01

62

On-line tritium production monitor  

DOEpatents

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.

Mihalczo, John T. (Oak Ridge, TN)

1993-01-01

63

Control Design for a Very Low-Frequency High-Voltage Test System Zhiyu Cao, Norbert Frhleke, Joachim Bcker  

E-print Network

Control Design for a Very Low-Frequency High-Voltage Test System Zhiyu Cao, Norbert Fröhleke and energy consumption of very low-frequency (VLF) high-voltage test systems (HVTS) versus HVTS of 50 Hz for a Very Low-Frequency High-Voltage Test System CAO Zhiyu EPE 2009 - Barcelona ISBN: 9789075815009 P.1 #12

Paderborn, Universität

64

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

E-print Network

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

Tan, Chew Lim

65

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

E-print Network

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

Cao, Longbing

66

Photon sieve: non-paraxial theory Qing Cao and Jurgen Jahns  

E-print Network

Photon sieve: non-paraxial theory Qing Cao and J¨urgen Jahns Photon sieves [1], which consist analysis of low-numerical- aperture (low-NA) photon sieves. We now [3] extend this model to the non-paraxial case of high-NA photon sieves working in the soft x-ray region, for which the paraxial diffrac- tion

Jahns, Jürgen

67

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

E-print Network

3D Fingerprint Phantoms Sunpreet S. Arora, Kai Cao and Anil K. Jain Department of Computer Science data. To overcome this limitation, use of a large number of 2D synthetic fingerprints for evaluating fingerprint systems had been proposed. However, the utility of 2D synthetic fingerprints is limited

68

Controlling the charge state of single Mo dopants in a CaO film  

NASA Astrophysics Data System (ADS)

Recent experiments have demonstrated that tiny amounts of Mo impurities give rise to drastic changes in the adsorption characteristic of a wide-gap CaO(001) film. In this scanning tunneling microscopy (STM) and density functional theory paper, we elucidate the underlying mechanism by analyzing the energy levels of the Mo dopants as a function of their oxidation state and depth below the surface. We show that Mo2+ ions in CaO subsurface layers can be reversibly charged and discharged by inducing local band-bending effects with the STM tip. A similar charge switching is not possible for Mo species in a higher oxidation state, as their highest-occupied molecular orbitals are located well below the onset of the CaO conduction band. The easiness of charge switching in Mo2+ ions explains the remarkable chemical properties of doped CaO films, as it renders the material a strong electron donor to adsorbates bound to the oxide surface.

Cui, Yi; Nilius, Niklas; Freund, Hans-Joachim; Prada, Stefano; Giordano, Livia; Pacchioni, Gianfranco

2013-11-01

69

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

E-print Network

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

Greenberg, Albert

70

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

E-print Network

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

Zhang, Wensheng

71

Jian Cao, Department of Mechanical Engineering, Northwestern University, January 2011 Department of Mechanical Engineering  

E-print Network

., Kumar, A., Reddy, N.V. and Cao, J. (2011) A New Methodology for Multi-Pass Single Point Incremental of the North American Manufacturing Research Institution of SME, Vol. 38, pp. 291-298. 8. Huang, Y Distortion in Sheet Metal Flanging, Transaction of the North American Manufacturing Research Institution

Ottino, Julio M.

72

Discovery of Collocation Episodes in Spatiotemporal Data Huiping Cao, Nikos Mamoulis, and David W. Cheung  

E-print Network

Discovery of Collocation Episodes in Spatiotemporal Data Huiping Cao, Nikos Mamoulis, and David W, vultures, etc.), we intro- duce the problem of discovering collocation episodes in them (e.g., if a puma within the next 3 minutes). Collocation episodes catch the inter-movement regularities among different

Cheung, David Wai-lok

73

Conformant Planning for Domains with Constraints --A New Approach Tran Cao Son and Phan Huy Tu  

E-print Network

Conformant Planning for Domains with Constraints -- A New Approach Tran Cao Son and Phan Huy Tu USA {mgelfond,ricardo}@cs.ttu.edu Abstract The paper presents a pair of new conformant planners, CPApc- ners based on this idea. We compare them with two state- of-the-art conformant planners, KACMBP

Tran, Cao Son

74

CRNN: Integrating Classification Rule and Neural Network Wei Li, Longbing Cao and Dazhe Zhao  

E-print Network

CRNN: Integrating Classification Rule and Neural Network Wei Li, Longbing Cao and Dazhe Zhao. In the prediction stage of the extant approaches, most of the existing association classifiers use the ensemble methodology. This paper proposes a classification method that integrating classification rule and neural

Cao, Longbing

75

Controlling the particle size of amorphous iron nanoparticles X. Cao, Yu. Koltypin, and G. Kataby  

E-print Network

of amorphous iron, which was prepared by the sonication of iron pentacarbonyl [Fe(CO)5], is reportedControlling the particle size of amorphous iron nanoparticles X. Cao, Yu. Koltypin, and G. Kataby 4 M, 1 M, and 0.25 M. The iron nanoparticles were subjected to TEM (Transmission Electron Micrograph

Prozorov, Ruslan

76

IDENTIFICATION OF CASO4 FORMED BY REACTION OF CAO AND SO2  

EPA Science Inventory

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

77

Generalized continuum theory for ferroelectric thin films Tianquan Lu* and Wenwu Cao  

E-print Network

­8 The mathematical treat- ment using this procedure is similar to that for domain walls in bulk, in which a gradientGeneralized continuum theory for ferroelectric thin films Tianquan Lu¨* and Wenwu Cao Department been used to describe the influence of imperfect surface layers or interface layers in ferroelectric

Cao, Wenwu

78

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

E-print Network

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

Cao, Jianshu

79

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

E-print Network

therapy to stem cell transplantation for neurodegenerative disease and CNS injury. HoweverReview Stem Cell Repair of Central Nervous System Injury Qilin Cao,1,2 Richard L. Benton,1 of Louisville School of Medicine, Louisville, Kentucky Neural stem cells (NSCs) have great potential as a ther

Harkema, Susan

80

Quantum-Classical Correspondence in Response Theory Maksym Kryvohuz and Jianshu Cao*  

E-print Network

Quantum-Classical Correspondence in Response Theory Maksym Kryvohuz and Jianshu Cao* Department and the classical Poisson brackets @fA; Bg is examined in the context of response theory. The classical response theory has several problems. Van Kampen cautioned the validity of the application of classical

Cao, Jianshu

81

Can Facial Metrology Predict Gender? Deng Cao, Cunjian Chen, Marco Piccirilli,  

E-print Network

Can Facial Metrology Predict Gender? Deng Cao, Cunjian Chen, Marco Piccirilli, Donald Adjeroh the question of whether facial metrology can be exploited for reliable gender prediction. A new method based solely on metrological information from fa- cial landmarks is developed. Here, metrological features

Ross, Arun Abraham

82

METROLOGY IN UNCALIBRATED IMAGES GIVEN ONE VANISHING POINT Hassan Foroosh Xiaochun Cao Murat Balci  

E-print Network

METROLOGY IN UNCALIBRATED IMAGES GIVEN ONE VANISHING POINT Hassan Foroosh Xiaochun Cao Murat Balci in the perspective images. 1. INTRODUCTION Metrology from uncalibrated images is becoming of increas- ing interest al. [3] proposed an approach for single view metrology, and showed that affine scene structure can

Foroosh, Hassan

83

Chemical analysis of the Chinese herbal medicine Gan-Cao (licorice)  

Microsoft Academic Search

Gan-Cao, or licorice, is a popular Chinese herbal medicine derived from the dried roots and rhizomes of Glycyrrhiza uralensis, G. glabra, and G. inflata. The main bioactive constituents of licorice are triterpene saponins and various types of flavonoids. The contents of these compounds may vary in different licorice batches and thus affect the therapeutic effects. In order to ensure its

Qingying Zhang; Min Ye

2009-01-01

84

A scaling and mapping theory for excess electrons in simple fluids Jianshu Cao  

E-print Network

A scaling and mapping theory for excess electrons in simple fluids Jianshu Cao Department 1994 A simple scaling argument is proposed to understand the localization of excess electrons in simple sphere. Numerical simulations of solvated electrons in atomic and diatomic solvents are used

Cao, Jianshu

85

Mobile Multi-Layered IPsec Heesook Choi, Hui Song, Guohong Cao, and Tom La Porta  

E-print Network

Mobile Multi-Layered IPsec Heesook Choi, Hui Song, Guohong Cao, and Tom La Porta Department cannot be provided if data sessions are protected using end-to-end encryption as with IPsec, because therefore not be used by the access routers. A previously proposed protocol, called Multi-layered IPsec (ML-IPsec

Yener, Aylin

86

Mobile Multi-Layered IPSec Advisors: Prof. Tom La Porta and Prof. Guohong Cao  

E-print Network

Mobile Multi-Layered IPSec Advisors: Prof. Tom La Porta and Prof. Guohong Cao Heesook Choi & Hui in Wireless Networks End-to-end security (IPSec) Prevents performance enhancements in the intermediate nodes Multi-layered IPSec (ML-IPSec) Allows the intermediate nodes to do performance enhancements Manual

Yener, Aylin

87

Networks for On-Line Data Base Access  

ERIC Educational Resources Information Center

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)

Williams, Martha E.

1977-01-01

88

Fuzzy Relative Positioning for On-Line Handwritten Stroke Analysis  

E-print Network

Fuzzy Relative Positioning for On-Line Handwritten Stroke Analysis Franc¸ois Bouteruche, S and robust mod- elling of the relative positioning of on-line handwritten strokes. We exploit the fuzzy to deal with the particular nature of on-line strokes, which are consti- tuted of non-connected points

Paris-Sud XI, Université de

89

On-Line Learning: One Way to Bring People Together  

ERIC Educational Resources Information Center

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…

Goff-Kfouri, Carol Ann

2006-01-01

90

Sulfation of CaO particles in a carbonation/calcination loop to capture CO{sub 2}  

SciTech Connect

CaO is being proposed as a regenerable sorbent of CO{sub 2} via a carbonation/calcination loop. It is well known that natural sorbents lose their capacity to capture CO{sub 2} with the number of cycles due to textural degradation. In coal combustion systems, reaction with the SO{sub 2} present in flue gases also causes sorbent deactivation. This work investigates the effect of partial sorbent sulfation on the amount of CaO used in systems where both carbonation and sulfation reactions are competing. We have found that SO{sub 2} reacts with the deactivated CaO resulting from repetitive calcination/carbonation reactions. Therefore, the deactivation of CaO as a result of the presence of SO{sub 2} is lower than one would expect if one assumes that SO{sub 2} reacts only with active CaO. This work shows that changes in the texture of the sorbent due to repetitive carbonation/calcination cycles tend to increase the sulfation capacity of the sorbents tested. This suggests that the purge of deactivated CaO obtained from a CO{sub 2} capture loop could be a more effective sorbent of SO{sub 2} than fresh CaO.

Grasa, G.S.; Alonso, M.; Abanades, J.C. [CSIC, Zaragoza (Spain)

2008-03-15

91

Sintering of calcium oxide (CaO) during CO2 chemisorption: a reactive molecular dynamics study.  

PubMed

Reactive dynamics simulations with the reactive force field (ReaxFF) were performed in NVE ensembles to study the sintering of two solid calcium oxide (CaO) particles with and without CO(2) chemisorption. The simulated sintering conditions included starting adsorption temperatures at 1000 K and 1500 K and particle separation distances of 0.3 and 0.5 nm. The results revealed that the expansion of sorbent particles during CO(2) chemisorption was attributed to the sintering of two CaO-CaO particles. Increasing the adsorption temperature resulted in more particle expansion and sintering. The shorter the distance between two particles, the faster the rate of sintering during CO(2) adsorption. A detailed analysis on atom spatial variations revealed that the sorbent particles with a larger separation distance had a larger CO(2) uptake because of less sintering incurred. The chemisorptions of CO(2) on CaO particles sintered at high adsorption temperatures were also simulated to mimic the process of sorbent regeneration. It was found that regeneration would be more difficult for sintered particles than for fresh particles. In addition, a possible sintering barrier, magnesium oxide (MgO), was introduced to prevent CaO particles from sintering during CO(2) chemisorption. It was found that the MgO particles could reduce the sintering of CaO particles during CO(2) chemisorption. Simulation results from this study provided some guidelines on synthesizing or selecting sorbents with less sintering effect for multiple CO(2) adsorption-regeneration cycles. PMID:22990764

Zhang, Luzheng; Lu, Yongqi; Rostam-Abadi, Massoud

2012-12-28

92

Fourier Transform Spectroscopy of the A 1 System of CaO  

E-print Network

of the spectrum, with numerous bands extending from the ultraviolet to the near-infrared, and tried various, Waterloo, Ontario, Canada N2L 3G1 Received May 24, 2000 The A 1 ­X1 near-infrared system of Ca states. The new near-infrared spectra of the A 1 ­X1 transition of CaO also permits the first direct high

Le Roy, Robert J.

93

Characteristics of HCN removal using CaO at high temperatures  

SciTech Connect

Experimental investigation on the removal of hydrogen cyanide (HCN) using calcium oxide (CaO) was carried out in a fixed bed reactor at temperature ranging from 300 to 1173 K, and the original HCN was produced during the pyrolysis of pyridine. Effects of temperature, volume space velocity, and initial HCN concentration on HCN removal were discussed. The results of temperature-programmed experiments show that temperature is the main factor affecting HCN removal. With the formation of CO, HCN starts to decrease from 473 K, and remains unchanged from 673 to 873 K. At 873 K, there is a further decrease in HCN without CO formation, and when temperature is higher than 1023 K, HCN is removed completely. In the isothermal experiments, CaCN{sub 2} was detected at 723 K, but at higher temperatures of 923 and 1123 K, there was no CaCN{sub 2} in the solid residues, and the nitrogen in the removed HCN was equal to that in the formed N{sub 2}. This indicates that at a lower temperature CaO is consumed to remove HCN, CaO + 2HCN {yields} CaCN{sub 2} + CO + H{sub 2}; but at a higher temperature, CaO acts as a catalyst for HCN removal, 2C{sub i}H{sub j} + 2HCN {yields} N{sub 2} + (j + 1 - k)H{sub 2} + 2C{sub I} + 1H{sub k}. The investigation on the removal efficiency shows that there is a critical temperature and a critical volume space velocity at which the HCN removal efficiency is able to reach up to 100%. 41 refs., 9 figs., 2 tabs.

Houzhang Tan; Xuebin Wang; Congling Wang; Tongmo Xu [Xi'an Jiaotong University, Shaanxi (China). State Key Laboratory of Multiphase Flow in Power Engineering

2009-03-15

94

Thermal diffusivity of sintered 12CaO×7Al2O3  

NASA Astrophysics Data System (ADS)

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

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

2008-01-01

95

Development of CaO coatings by thermal and chemical vapor deposition  

NASA Astrophysics Data System (ADS)

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.

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

2002-12-01

96

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

PubMed

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

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

2013-12-15

97

Thermal reactions of aromatics with CaO. Technical progress report, May 1, 1982-August 31, 1982  

SciTech Connect

The activity of CaO for the cracking of benzene is known to be very dependent on the calcining temperature and the optimal temperature is 550/sup 0/C. An optimal calcining time of 2 hours at 550/sup 0/C was determined. The considerable scatter in the activity data suggests that the benzene pyrolysis temperature, which is higher than the calcining temperature, may have modified the physical and chemical properties of the CaO during the post-calcination period. Basicity measurements on CaO samples calcined for different time periods show no correlation between basicity and activity for benzene cracking. Infrared analysis of a calcined mixture of CaO and quartz showed no evidence of the presence of any silicate complexes. 7 figures.

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

1982-09-01

98

An optimal on-line algorithm for metrical task system  

Microsoft Academic Search

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

Allan Borodin; Nathan Linial; Michael E. Saks

1992-01-01

99

Adaptive and Self-Confident On-Line Learning Algorithms  

Microsoft Academic Search

We study on-line learning in the linear regression framework. Most of the performance bounds for on-line algorithms in this framework assume a constant learning rate. To achieve these bounds the learning rate must be optimized based on a posteriori information. This information depends on the whole sequence of examples and thus it is not available to any strictly on-line algorithm.

Peter Auer; Nicolò Cesa-bianchi; Claudio Gentile

2002-01-01

100

Modification of CaO by organic alumina precursor for enhancing cyclic capture of CO{sub 2} greenhouse gas  

SciTech Connect

The modification of CaO sorbent with organic alumina precursor to enhance the sorption capacity during cyclic capture is demonstrated in this study. The results indicate that during the 10 min sorption time for each cycle, the CO{sub 2} sorption capacity of original CaO sorbent is significantly decreased from 0.27 to 0.19 and 0.12 g CO{sub 2}/g sorbent after 5 and 60 cycles, respectively. On the other hand, the organic alumina modified CaO has a fresh capacity of 0.22 g CO{sub 2}/g sorbent, it increases to 0.24 g CO{sub 2}/g sorbent after 5 cycles, and then decreases to around 0.15 g CO{sub 2}/g sorbent after 60 cycles. When increasing the sorption time to 60 min at the 66th cycle, the sorption capacity of original CaO is 0.2, whereas it is 0.26 g CO{sub 2}/g sorbent for organic alumina modified CaO. The results demonstrate that by adding only 5% by weight of Ca{sub 12}Al{sub 14}O{sub 3}3 species into the CaO sorbent, the CO{sub 2} sorption capacity can be enhanced up to similar to 27% by weight.

Chen, Y.T.; Karthik, M.; Bai, H. [National Chiao Tung University, Hsinchu (Taiwan). Inst. of Environmental Engineering

2009-06-15

101

Evolutionary Changes in Chlorophyllide a Oxygenase (CAO) Structure Contribute to the Acquisition of a New Light-harvesting Complex in Micromonas*?  

PubMed Central

Chlorophyll b is found in photosynthetic prokaryotes and primary and secondary endosymbionts, although their light-harvesting systems are quite different. Chlorophyll b is synthesized from chlorophyll a by chlorophyllide a oxygenase (CAO), which is a Rieske-mononuclear iron oxygenase. Comparison of the amino acid sequences of CAO among photosynthetic organisms elucidated changes in the domain structures of CAO during evolution. However, the evolutionary relationship between the light-harvesting system and the domain structure of CAO remains unclear. To elucidate this relationship, we investigated the CAO structure and the pigment composition of chlorophyll-protein complexes in the prasinophyte Micromonas. The Micromonas CAO is composed of two genes, MpCAO1 and MpCAO2, that possess Rieske and mononuclear iron-binding motifs, respectively. Only when both genes were introduced into the chlorophyll b-less Arabidopsis mutant (ch1-1) was chlorophyll b accumulated, indicating that cooperation between the two subunits is required to synthesize chlorophyll b. Although Micromonas has a characteristic light-harvesting system in which chlorophyll b is incorporated into the core antennas of reaction centers, chlorophyll b was also incorporated into the core antennas of reaction centers of the Arabidopsis transformants that contained the two Micromonas CAO proteins. Based on these results, we discuss the evolutionary relationship between the structures of CAO and light-harvesting systems. PMID:23677999

Kunugi, Motoshi; Takabayashi, Atsushi; Tanaka, Ayumi

2013-01-01

102

Game theory, on-line prediction and boosting  

Microsoft Academic Search

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

Yoav Freund; Robert E. Schapire

1996-01-01

103

Evidence on the Effectiveness of On-Line Homework  

ERIC Educational Resources Information Center

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…

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

2008-01-01

104

System Requirements for On-Line and Batch Retrieval.  

ERIC Educational Resources Information Center

Three papers on system requirements for on-line and batch retrieval presented at the American Society for Information Science (ASIS) annual meeting are included here. At G.D. Searle, data for records related to pharmacology screening are used in a batch system, and an on-line system is used to search information on mutagenic, carcinogenic, and…

American Society for Information Science, Washington, DC. Special Interest Group on Computerized Retrieval Services.

105

On line partial discharge diagnosis of power cables  

Microsoft Academic Search

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.

G. C. Montanari

2009-01-01

106

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

ERIC Educational Resources Information Center

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

Khan, Abdul W.

2000-01-01

107

The Challenge of Developing On-Line Courses.  

ERIC Educational Resources Information Center

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…

Auter, Philip J.; Hanna, Michael S.

108

ON-LINE CURSIVE HANDWRITING RECOGNITION USING SPEECH RECOGNITION METHODS  

E-print Network

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

Starner, Thad E.

109

On-Line Evidence for Context Use by Right-Brain-Damaged Patients  

Microsoft Academic Search

The ability of right-brain-damaged (RBD) patients to use on-line contextual information in a word-monitoring task was examined. Subjects were required to monitor for target words in the contexts of both normal and semantically anomalous sentences. Similar to previous studies with normals (e.g., Marslen-Wilson & Tyler, 1980), the semantic integrity of the context was influential in the word-recognition process. Importantly, the

Carol L. Leonard; Shari R. Baum

1998-01-01

110

Viability of Clostridium sporogenes spores after CaO hygienization of meat waste.  

PubMed

The occurrence of the pathogenic species C. perfringens and C. botulinum spores in animal by-products poses a potential epidemiological hazard. Strong entero- and neurotoxins produced by these bacteria adversely affect human health. To inactivate pathogens present in animal by-products, waste must be subjected to various methods of sanitization. The aim of the presented study was to estimate the effect of different doses of CaO on the viability of spores Clostridium sporogenes in meat wastes category 3. During the research, two doses of burnt lime were added to the poultry mince meat and meat mixed with swine blood contaminated with Clostridium sporogenes spore suspension. Half of the samples collected for microbiological analyses were buffered to achieve the pH level ~7, the other were examined without pH neutralization. To estimate the spore number, 10-fold dilution series in peptone water was prepared and heat-treated at 80 °C for 10 min. After cooling-down, one milliliter of each dilution was pour-plated onto DRCM medium solidified with agar. Statistical analysis were performed using the Statistica software. Application of 70% CaO caused complete inactivation of Clostridium spores in meat wastes after 48 hours. The highest temperature achieved during the experiment was 67 °C. Rapid alkalization of the biomass resulted in increasing pH to values exceeding 12. The effect of liming was not dependent on the meat wastes composition nor CaO dose. The experiment proved the efficiency of liming as a method of animal by-products sanitization. Application of the obtained results may help reduce the epidemiological risk and ensure safety to people handling meat wastes at each stage of their processing and utilization. PMID:25292114

Bauza-Kaszewska, Justyna; Paluszak, Zbigniew; Skowron, Krzysztof

2014-09-01

111

On-line maintenance methodology development and its applications  

SciTech Connect

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

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

2012-07-01

112

Pulsed injection metal organic chemical vapour deposition and characterisation of thin CaO films  

NASA Astrophysics Data System (ADS)

Thin films of CaO were grown on silicon (Si) and lanthanum aluminate (LaAlO 3) substrates by pulsed injection metal-organic chemical vapour deposition in a vertical injection MOCVD system. Growth parameters were systematically varied to study their effect on film growth and quality and to determine the optimal growth conditions for this material. Film quality and growth rate were evaluated by atomic force microscopy, X-ray diffraction and Rutherford Backscattering Spectroscopy measurements. Optimised conditions allowed growing transparent, single phase films textured along the (0 0 l) direction.

Borges, R. P.; Ferreira, P.; Saraiva, A.; Gonçalves, R.; Rosa, M. A.; Gonçalves, A. P.; da Silva, R. C.; Magalhães, S.; Lourenço, M. J. V.; Santos, F. J. V.; Godinho, M.

2009-05-01

113

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

PubMed

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

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

2002-02-01

114

Introducing an on-line adaptive procedure for prostate image guided intensity modulate proton therapy  

NASA Astrophysics Data System (ADS)

With on-line image guidance (IG), prostate shifts relative to the bony anatomy can be corrected by realigning the patient with respect to the treatment fields. In image guided intensity modulated proton therapy (IG-IMPT), because the proton range is more sensitive to the material it travels through, the realignment may introduce large dose variations. This effect is studied in this work and an on-line adaptive procedure is proposed to restore the planned dose to the target. A 2D anthropomorphic phantom was constructed from a real prostate patient's CT image. Two-field laterally opposing spot 3D-modulation and 24-field full arc distal edge tracking (DET) plans were generated with a prescription of 70 Gy to the planning target volume. For the simulated delivery, we considered two types of procedures: the non-adaptive procedure and the on-line adaptive procedure. In the non-adaptive procedure, only patient realignment to match the prostate location in the planning CT was performed. In the on-line adaptive procedure, on top of the patient realignment, the kinetic energy for each individual proton pencil beam was re-determined from the on-line CT image acquired after the realignment and subsequently used for delivery. Dose distributions were re-calculated for individual fractions for different plans and different delivery procedures. The results show, without adaptive, that both the 3D-modulation and the DET plans experienced delivered dose degradation by having large cold or hot spots in the prostate. The DET plan had worse dose degradation than the 3D-modulation plan. The adaptive procedure effectively restored the planned dose distribution in the DET plan, with delivered prostate D98%, D50% and D2% values less than 1% from the prescription. In the 3D-modulation plan, in certain cases the adaptive procedure was not effective to reduce the delivered dose degradation and yield similar results as the non-adaptive procedure. In conclusion, based on this 2D phantom study, by updating the proton pencil beam energy from the on-line image after realignment, this on-line adaptive procedure is necessary and effective for the DET-based IG-IMPT. Without dose re-calculation and re-optimization, it could be easily incorporated into the clinical workflow.

Zhang, M.; Westerly, D. C.; Mackie, T. R.

2011-08-01

115

On-line hydraulic state prediction for water distribution systems  

E-print Network

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 ...

Whittle, Andrew

116

Preparing Students for Assessment in the On-Line Class.  

ERIC Educational Resources Information Center

Advises professors with limited technological experience on how to use features of their existing computer networks to communicate assessment expectations to their on-line students. Explains how e-mail and Web postings can serve this purpose. (EV)

Ford, Michele L.

2002-01-01

117

Using PlacesOnLine in Instructional Activities  

Microsoft Academic Search

PlacesOnLine.org is a Web portal that provides easy access to high quality Web sites that focus on places from around the world. It is intended for use by a wide range of people, including professional geographers, teachers and students at all levels, and the general public. This article explores the potential uses of PlacesOnLine as an educational resource. Specifically, it

Michael W. Longan; Francis Owusu; Curtis C. Roseman

2008-01-01

118

Enhancing student learning through on-line quizzes  

Microsoft Academic Search

We have experimented with the use of weekly on-line quizzes to enhance student learning in our first-year computer science courses. In our experiments we com- pared the effectiveness of using quizzes to the alter- native of using weekly marked laboratory assignments. The results of our experiments show that student learn- ing and retention increase with on-line quizzes. Weekly quizzes would

Denise M. Woit; David V. Mason

2000-01-01

119

Enhancing student learning through on-line quizzes  

Microsoft Academic Search

We have experimented with the use of weekly on-line quizzes to enhance student learning in our first-year computer science courses. In our experiments we compared the effectiveness of using quizzes to the alternative of using weekly marked laboratory assignments. The results of our experiments show that student learning and retention increase with on-line quizzes. Weekly quizzes would be impossible if

Denise Woit; Dave Mason

2000-01-01

120

Mechanochemical degradation of ?-hexachlorocyclohexane by a planetary ball mill in the presence of CaO.  

PubMed

Although the use of the insecticide ?-hexachlorocyclohexane (HCH) is now prohibited in many countries because of its hazardousness, stockpiles of ?-HCH still exist. In this study, we subjected ?-HCH to mechanochemical (MC) treatment with a planetary ball mill in the presence of CaO to investigate the feasibility of using this method for the treatment of ?-HCH stockpiles. We confirmed the degradation of ?-HCH and investigated the degradation mechanism. The major intermediates were identified to be 1,3,4,5,6-pentachlorocyclohexene (?-PCCH) and chlorobenzenes (CBzs). Analysis of the steric structure of ?-HCH and identification of the degradation intermediates suggested that successive dehydrochlorination led to the formation of trichlorobenzenes. Products of further degradation (dichlorobenzenes, monochlorobenzene, and benzene) were also detected. Surprisingly, methane and ethane were also detected, which suggests cleavage of the C-C bonds of the cyclohexane ring and hydrogenation. All of the chlorine atoms in the ?-HCH could be transformed into inorganic chloride compounds by the MC treatment with CaO. Our results indicate that ?-HCH can be completely dechlorinated by MC treatment. PMID:22055315

Nomura, Yugo; Fujiwara, Kazuo; Terada, Akihiko; Nakai, Satoshi; Hosomi, Masaaki

2012-01-01

121

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

NASA Astrophysics Data System (ADS)

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

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

2012-12-01

122

Nb-doped CaO: an efficient electron donor system  

NASA Astrophysics Data System (ADS)

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

Prada, Stefano; Giordano, Livia; Pacchioni, Gianfranco

2014-08-01

123

On-line versus off-line vestibular-evoked control of goal-directed arm movements.  

PubMed

The present study tested whether vestibular input can be processed on-line to control goal-directed arm movements towards memorized visual targets when the whole body is passively rotated during movement execution. Subjects succeeded in compensating for current body rotation by regulating ongoing arm movements. This performance was compared to the accuracy with which subjects reached for the target when the rotation occurred before the movement. Subjects were less accurate in updating the internal representation of visual space through vestibular signals than in monitoring on-line body orientation to control arm movement. These results demonstrate that vestibular signals contribute to motor control of voluntary arm movements and suggest that the processes underlying on-line regulation of goal-directed movements are different from those underlying navigation-like behaviors. PMID:12218706

Bresciani, Jean-Pierre; Blouin, Jean; Sarlegna, Fabrice; Bourdin, Christophe; Vercher, Jean-Louis; Gauthier, Gabriel M

2002-08-27

124

Ben cao tu jing (Illustrated Canon of Herbology) and the origin of modern identification of Chinese materia medica.  

PubMed

There is certain relation between the development of modern identification of Chinese materia medica and Ben cao tu jing. The purpose of Su Song's compilation of this book and the tasks of modern identification of Chinese materia medica, including the verification of genuineness, superiority of the drugs to ensure their qualities, are quite similar, and quite close in their contents. Suffice it to say that Ben cao tu jing made considerable contribution to modern identification of Chinese drugs, with a role of linking the past with the present. PMID:11623860

Jiang, D

1999-04-01

125

Establishing standards for intranet on-line education.  

PubMed

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

Peterson, Ronnie; Berns, Susan

2005-01-01

126

On-line measurement of heat of combustion  

NASA Technical Reports Server (NTRS)

An experimental method for an on-line measurement of heat of combustion of a gaseous hydrocarbon fuel mixture of unknown composition is developed. It involves combustion of a test gas with a known quantity of air to achieve a predetermined oxygen concentration level in the combustion products. This is accomplished by a feedback controller which maintains the gas volumetric flow rate at a level consistent with the desired oxygen concentration in the products. The heat of combustion is determined from a known correlation with the gas volumetric flow rate. An on-line microcomputer accesses the gas volumetric flow data, and displays the heat of combustion values at desired time intervals.

Chaturvedi, S. K.; Chegini, H.

1988-01-01

127

The ion guide isotope separator on-line, IGISOL  

NASA Astrophysics Data System (ADS)

A new ISOL method, the IGISOL (Ion Guide Isotope Separator On-Line), permits thermalized primary recoil ions produced in nuclear reactions to be run directly through a mass separator without a conventional ion source. It allows a fast (? 100 ?s) separation of various radioactive isotopes of both volatile and nonvolatile elements. The overall separation efficiencies measured for heavy nuclides produced in light ion induced reactions are up to 10%. The shortest-lived activity identified in an on-line separation is the 182 ?s isomeric state of 207Bi.

Ärje, J.; Äystö, J.; Hyvönen, H.; Taskinen, P.; Koponen, V.; Honkanen, J.; Valli, K.; Hautojärvi, A.; Vierinen, K.

1986-07-01

128

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

E-print Network

Steam-Coal Gasification Using CaO and KOH for in Situ Carbon and Sulfur Capture Nicholas S. Siefert Virginia 26507, United States ABSTRACT: We present experimental results of coal gasification. Using two different coal types and temperatures between 700 and 900 °C, we studied the effect

Litster, Shawn

129

Feedback: Towards Dynamic Behavior and Secure Routing for Wireless Sensor Zhen Cao, Jianbin Hu, Zhong Chen, Maoxing Xu, Xia Zhou  

E-print Network

- sion in a secure and energy aware manner. We present both mathematical analysis and simulation resultsFeedback: Towards Dynamic Behavior and Secure Routing for Wireless Sensor Networks Zhen Cao, Peking University Network and Information Security Laboratory Beijing, China { caozhen, hjbin, chen, xumx

Ramkumar, Mahalingam

130

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

E-print Network

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

Keinan, Alon

131

Predicting Gender and Weight from Human Metrology using a Copula Model Deng Cao, Cunjian Chen, Donald Adjeroh, Arun Ross  

E-print Network

Predicting Gender and Weight from Human Metrology using a Copula Model Deng Cao, Cunjian Chen in predicting gender and weight. For gender prediction, the proposed model results in a 0.7% misclassification model gives 0.01 mean absolute error (in the range 0 to 1) using both body and head information, 0

Ross, Arun Abraham

132

A New Approach to Conformant Planning using CNF Son Thanh To and Tran Cao Son and Enrico Pontelli  

E-print Network

information about the initial state. Since the problem is introduced (Smith and Weld 1998), several conformantA New Approach to Conformant Planning using CNF Son Thanh To and Tran Cao Son and Enrico Pontelli in the literature for conformant planning. We evaluate the performance of CNF against other state

Tran, Cao Son

133

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

134

Use of fly ash as an admixture for electromagnetic interference shielding Jingyao Cao, D.D.L. Chung*  

E-print Network

Use of fly ash as an admixture for electromagnetic interference shielding Jingyao Cao, D.D.L. Chung The use of fly ash as an admixture results in enhancement of the electromagnetic interference (EMI by silica fume, but is essentially not affected by fly ash. Both fly ash and silica fume cause slight

Chung, Deborah D.L.

135

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

E-print Network

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

Sun, Dengfeng

136

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

E-print Network

A Robust Panel Extraction Method for Manga Xufang Pang, Ying Cao, Rynson W.H. Lau, and Antoni B.com, {rynson.lau,abchan}@cityu.edu.hk ABSTRACT Automatically extracting frames/panels from digital comic pages, au- tomatic panel extraction for manga, i.e., Japanese comics, can be especially challenging, largely

Lau, W. H. Nynson

137

Point Cloud Skeletons via Laplacian-Based Contraction Junjie Cao, Andrea Tagliasacchi, Matt Olson, Hao Zhang and Zhixun Su  

E-print Network

Point Cloud Skeletons via Laplacian-Based Contraction Junjie Cao, Andrea Tagliasacchi, Matt Olson skeleton extraction via Laplacian-based contraction. Our algorithm can be applied to surfaces, allowing skeleton-based manipulation of point clouds without explicit surface reconstruction. By avoiding

Zhang, Richard "Hao"

138

Optimal Efficiency of Self-Assembling Light-Harvesting Arrays Ji-Hyun Kim and Jianshu Cao*  

E-print Network

Optimal Efficiency of Self-Assembling Light-Harvesting Arrays Ji-Hyun Kim and Jianshu Cao equation that describes energy transfer over a given lattice, we explore how energy transfer efficiency (derived in Appendix A) for efficiency shows a steep increase with a D-to-A transfer rate when

Cao, Jianshu

139

On-Line Localization of the Lumpectomy Cavity Using Surgical Clips  

SciTech Connect

Purpose: To present an on-line image guidance procedure for external beam accelerated partial breast irradiation based on cone-beam computed tomography (CBCT) imaging of surgical clips; and to estimate the possible clinical target volume (CTV) to planning target volume (PTV) margin reduction allowed by this technique. Methods and Materials: Clips in the CBCT image are detected automatically using in-house software. The treatment couch is translated according to the shift in the clips' center of mass between the planning and CBCT images. Three components for the PTV margin are considered: (1) breathing, (2) surrogate error (i.e., error in cavity position after perfect setup to clips), and (3) residual error (i.e., error arising from the inability to execute a perfect setup to clips due to technological limitations, such as couch travel precision). These factors were input into a standard formula for CTV-to-PTV margin calculation. Results: The average magnitude of clip-based corrections was 7 {+-} 2 mm (10 patients, 44 fractions). After localization, the residual error magnitude was 1.6 {+-} 1.3 mm, justifying an isotropic CTV-to-PTV margin of approximately 6 mm, including breathing and surrogate error. Conclusions: On-line localization of the lumpectomy cavity using surgical clips is technically feasible from the standpoint of equipment, time, and process, making possible a decreased CTV-to-PTV margin for accelerated partial breast irradiation. Because the procedure is exclusively target based, additional monitoring of critical structures may be advisable.

Kim, Leonard H. [Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI (United States)], E-mail: lkim@beaumonthospitals.com; Wong, John [Department of Radiation Oncology and Molecular Radiation Sciences, School of Medicine, Johns Hopkins University, Baltimore, MD (United States); Yan Di [Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI (United States)

2007-11-15

140

Effect of sulfated CaO on NO reduction by NH{sub 3} in the presence of excess oxygen  

SciTech Connect

The effect of sulfated CaO on NO reduction by NH{sub 3} in the presence of excess oxygen was investigated to evaluate the potential of simultaneous SO{sub 2} and NO removal at the temperature range of 700-850{sup o}C. The physical and chemical properties of the CaO sulfation products were analyzed to investigate the NO reduction mechanism. Experimental results showed that sulfated CaO had a catalytic effect on NO reduction by NH{sub 3} in the presence of excess O{sub 2} after the sulfation reaction entered the transition control stage. With the increase of CaO sulfation extent in this stage, the activity for NO reduction first increased and then decreased, and the selectivity of NH{sub 3} for NO reduction to N{sub 2} increased. The byproduct (NO{sub 2} and N{sub 2}O) formation during NO reduction experiments was negligible. X-ray photoelectron spectroscopy (XPS) analysis showed that neither CaSO{sub 3} nor CaS was detected, indicating that the catalytic activity of NO reduction by NH{sub 3} in the presence of excess O{sub 2} over sulfated CaO was originated from the CaSO{sub 4} product. These results revealed that simultaneous SO{sub 2} and NOx control by injecting NH{sub 3} into the dry flue gas desulfurization process for NO reduction might be achieved. 38 refs., 6 figs., 1 tab.

Tianjin Li; Yuqun Zhuo; Yufeng Zhao; Changhe Chen; Xuchang Xu [Tsinghua University, Beijing (China). Key Laboratory for Thermal Science and Power Engineering of Ministry of Education

2009-04-15

141

A comparison of reading paper and on-line documents  

Microsoft Academic Search

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,

Kenton O'Hara; Abigail Sellen

1997-01-01

142

Children's On-Line Processing of Scrambling in Japanese  

ERIC Educational Resources Information Center

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…

Suzuki, Takaaki

2013-01-01

143

On-line Learning and the Metrical Task System Problem  

Microsoft Academic Search

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

Avrim Blum; Carl Burch

2000-01-01

144

Growing Academic Vocabulary with a Collaborative On-Line Database.  

ERIC Educational Resources Information Center

This paper examines how collaborative on-line databases can be used to meet the need for individualized instruction for academic vocabulary learners intending to do university work in English. It is argued that effective teaching and course design for preparing non-native English speaking students for study at English language universities must be…

Cobb, Tom; Horst, Marlise

145

On-line estimation of wind farm transient stability  

Microsoft Academic Search

In the paper the probabilistic evaluation of wind farm transient stability is discussed and an on-line statistical inference approach for this evaluation is proposed. More specifically, the paper deals with the transient stability aspect of wind generation integration into power system, starting from the observation that the impact of distributed generation is able to affect the overall dynamic behavior; in

E. Chiodo; D. Lauria

2009-01-01

146

Competitive Analysis of On-Line Disk Scheduling  

Microsoft Academic Search

We give a detailed competitive analysis of a popular on-line disk scheduling algorithm, namely, LOOK. Our analysis yields a tight competitive ratio for the LOOK algorithm. By comparing and contrasting the competitive ratio of LOOK with the lower bounds of FCFS and SSTF (which are equally popular in disk scheduling), our results provide strong evidence to suggest that when the

Tzuoo-hawn Yeh; Cheng-ming Kuo; Chin-laung Lei; Hsu-chun Yen

1996-01-01

147

On-Line Selection of Discriminative Tracking Features  

E-print Network

for a specific feature f They are computed as normalized histograms CSE598G Collins Computing Variance Ratio1 CSE598G Collins On-Line Selection of Discriminative Tracking Features Robert Collins and Yanxi Liu (and later, Marius Leordeanu) ICCV 2003 CSE598G Collins Classification-based Tracking training

Collins, Robert T.

148

On-Line Selection of Discriminative Tracking Features  

E-print Network

-conditional distributions for a specific feature f They are computed as normalized histograms #12;CSE598G Collins Computing Collins Example: 1D Color Feature Spaces (a R + b G + c B) (|a|+|b|+|c|) + offset where a,b,c are {-2CSE598G Collins On-Line Selection of Discriminative Tracking Features Robert Collins and Yanxi Liu

Collins, Robert T.

149

On-line mass storage system functional design document  

NASA Technical Reports Server (NTRS)

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

Earnest, D.

1975-01-01

150

Self-Checking on-Line Testable Static RAM.  

National Technical Information Service (NTIS)

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 ...

S. Chau, D. Rennels

1990-01-01

151

On-line optimisation of a particle production process  

Microsoft Academic Search

Microencapsulated and microsphere products have become increasingly popular in the pharmaceutical and cosmetic industry. They are used as controlled-release drug systems as well as in diagnostic contrast agents. An example on how these kinds of products can be optimised is presented. The selected product is optimised by the use of a model based on an on-line steady state optimisation concept

Svein Kvale; Bjørn Haugseter; Odd A. Asbjørnsen; Tore Omtveit

2001-01-01

152

Structurally Based Template Matching of On-line Handwritten Characters  

Microsoft Academic Search

A large share of the early work on on-line handwriting recognition involved structural and syntactical methods. These approaches were soon abandoned in favor of template matching and statistical methods due to the difficulty in definingreliablerulesdealingwiththelargevariabilityinon-linehandwritten characters. However, any method for HWR utilize the structural information implicitly and one could argue that their success depends on how well this is done.

Jakob Sternby

153

Optimal On-Line Walking Pattern Generation for Biped Robots  

Microsoft Academic Search

A new 2D walking pattern generation method is proposed for biped robots in this paper. The key feature of the proposed method is to obtain an optimal walking pattern on-line with the largest stability in the sense of zero moment point (ZMP) subject to the constraints of torque and velocity of the joint actuators. With the aids of a 3-link

Hao Chen; Shuwen Pan; Rong Xiong; Jun Wu

2010-01-01

154

Developing an On-Line Interactive Health Psychology Module  

ERIC Educational Resources Information Center

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…

Upton, Dominic; Cooper, Carol

2006-01-01

155

Switched reluctance motor modeling with on-line parameter identification  

Microsoft Academic Search

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

Sayeed Mir; Iqbal Husain; Malik E. Elbuluk

1998-01-01

156

Research on government on-line information management and service  

Microsoft Academic Search

Combined with the changes of the government online information management and service in recent years, the paper discuss the Development and Current Status about Government online information resource management , service quality and service standards, availability and proposed to increase government online information management and service concerns from the theoretical and practical. Keyword: On-line Information: Management: Service

Yin-zhi Lei; Xi-peng Wei; Xiao-yin Zhou

2011-01-01

157

The on-line shortest path problem under partial monitoring  

Microsoft Academic Search

The on-line shortest path problem is considered under various models of partial monitoring. Given a weighted directed acyclic graph whose edge weights can change in an arbitrary (adversarial) way, a decision maker has to choose in each round of a game a path between two distinguished vertices such that the loss of the chosen path (defined as the sum of

Andras Gyorgy; Tamas Linder; Gabor Lugosi; Gyorgy Ottucsak

2007-01-01

158

On-line scintillation counting on Meltilex TM basis  

Microsoft Academic Search

A detection system is described for monitoring on-line radioactive process solutions by solid scintillation counting. The system consists of a flow cell with perspex windows coated with the plastic scintillator MeltilexTM. The cell is confined in a chamber welded to a La Calhène container. Thus the detection device is easily attached to, detached from and transported between glove boxes, and

U. Wenzel

1996-01-01

159

The On-Line Processing of Written Irony  

ERIC Educational Resources Information Center

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

Filik, Ruth; Moxey, Linda M.

2010-01-01

160

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 ...

161

Power system network modeling for on-line analysis  

Microsoft Academic Search

On-line power system analysis enables to make power mode-related decision based on information available at real time. The quality of the studies and efficiency of power system operation are closely associated with the accuracy of the power system models. Accurate and quick decision based on analysis on real time data has been necessary for making operational plan under the deregulation

Abhimanyu Gartia; Nallarasan; S. P. Barnwal; G. Madhukar

2009-01-01

162

Assessment of an On-Line Educational Administration Course  

ERIC Educational Resources Information Center

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

Kim, Lori

2004-01-01

163

A New On-Line Resource for Psycholinguistic Studies  

ERIC Educational Resources Information Center

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

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

2004-01-01

164

ORION - the OMEGA Remote Interactive On-line System  

Microsoft Academic Search

ORION is a system which permits the manipulation of files, records and characters, remote job submittal and retrieval of output files including the direct loading of remote on-line computers. The system uses the computer hardware of the OMEGA project at CERN, and is designed to assist researchers in development and debugging of their programs.

R D Russell; P Sparrman; M Krieger

1973-01-01

165

Interactive On-line Exercises of Basic Mathematical Functions  

Microsoft Academic Search

In this paper, a system is described for serving on-line exercises of mathematical functions for high-school students. The system basically depends on WWW technology and uses WWW browsers running on students' computers for displaying questions, answers, and explanations. An exercise page has a graph of a mathematical function and requests a student to fill the text field with a mathematical

H. Nishizawa

166

Statistical Mechanics of On-line learning Michael Biehl1  

E-print Network

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

Biehl, Michael

167

On-line Learning of Dichotomies Racah Institute of Physics  

E-print Network

rule, the learning curve of the perceptron algorithm can decrease as fast as P;1, if the sched- ule, since each example is presented only once. The learning curve, or generalization error as a function output noise, we propose a new on-line algorithm for a perceptron yielding a learning curve that can

Seung, Sebastian

168

Pedestrian Detection Using Covariance Descriptor and On-line Learning  

Microsoft Academic Search

edestrian detection is an important yet challenging problem in object classification due to flexible body pose, loose clothing and ever-changing illumination. In this paper, we employ covariance features and propose an on-line learning classifier which combines naive Bayes classifier and cascade support vector machines (SVM) to improve the precision and recall rate of pedestrian detection in still images. Experimental results

Wen-Hung Liao; Ling-Wei Huang

2011-01-01

169

On-line Detection of Rule Violations in Table Soccer  

E-print Network

by controlling and kicking a ball on a game table with playing gures attached to rods. Playing table soccer before or after ball contact, the angles before and after ball 1 International Table Soccer FederationOn-line Detection of Rule Violations in Table Soccer Armin Hornung and Dapeng Zhang Albert

Nebel, Bernhard

170

On-Line Geometric Modeling Notes EIGENVALUES AND EIGENVECTORS  

E-print Network

matrix can be written as A = RL, it is easy to generate the inverse of A. A-1 = L-1 -1 R-1 = R-1 L sinceOn-Line Geometric Modeling Notes EIGENVALUES AND EIGENVECTORS OF THE REFINEMENT MATRIX Kenneth I procedure can be specified by a matrix operation. In this case the refinement matrix A is defined

California at Davis, University of

171

On-line diagnosis of sequential systems, 2  

NASA Technical Reports Server (NTRS)

The theory and techniques applicable to the on-line diagnosis of sequential systems, were investigated. A complete model for the study of on-line diagnosis is developed. First an appropriate class of system models is formulated which can serve as a basis for a theoretical study of on-line diagnosis. Then notions of realization, fault, fault-tolerance and diagnosability are formalized which have meaningful interpretations in the the context of on-line diagnosis. The diagnosis of systems which are structurally decomposed and are represented as a network of smaller systems is studied. The fault set considered is the set of faults which only affect one component system is the network. A characterization of those networks which can be diagnosed using a purely combinational detector is achieved. A technique is given which can be used to realize any network by a network which is diagnosable in the above sense. Limits are found on the amount of redundancy involved in any such technique.

Sundstrom, R. J.

1974-01-01

172

On-Line Computer Aids for Research in Linguistics.  

ERIC Educational Resources Information Center

A set of procedures for testing hypotheses about the syntactic structure of natural languages has been developed for use on-line with computer display consoles. The procedures were designed in the context of Chomsky's transformational generative grammar. A linguist can construct phrase structure trees, selecting with the lightgun from alternative…

Gross, Louis N.; Walker, Donald E.

173

On-Line Selection of Discriminative Tracking Features  

E-print Network

structure or expected motion, and thus tracking success is bought at the price of reduced generality through patches of sunlight and shadow. The best feature for tracking the car through sunlight performs poorly in shadow, and vice versa. A key issue addressed in this work is on-line, adaptive selection

Collins, Robert

174

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

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

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

175

ON-LINE MONITORING OF FOOD PROCESSES USING SUBSURFACE  

E-print Network

ON-LINE MONITORING OF FOOD PROCESSES USING SUBSURFACE LASER SCATTERING Jens Michael Carstensen ­ Refractive index · Use: formulation and online ­ Drinks ­ Emulsions ­ Foam/bread ­ Gels ­ Suspensions #12 (1000 minutes) #12;12 DTU Informatics, Technical University of Denmark Foam bubble size estimation using

176

On-Line Machine Covering Yossi Azar1  

E-print Network

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

Azar, Yossi

177

On-Line QRS Complex Detection Using Wavelet Filtering.  

National Technical Information Service (NTIS)

This paper presents a new QRS complex detection algorithm that can be applied in various on-line FCC processing systems The algorithm is performed in two steps: first a wavelet transform filtering is applied to the signal, then QRS complex localization is...

L. Szilagyi, Z. Benyo, S. M. Szilagyi, L. Nagy

2001-01-01

178

Facing regulatory challenges of on-line hemodiafiltration.  

PubMed

On-line hemodiafiltration (on-line HDF) is the result of a vision that triggered multifarious changes in very different areas. Driven by the idea to offer better medical treatment for renal patients, technological innovations were developed and established that also constituted new challenges in the field of regulatory affairs. The existing regulations predominantly addressed the quality and safety of those products needed to perform dialysis treatment which were supplied by industrial manufacturers. However, the complexity of treatment system required for the provision of on-line fluids demanded a holistic approach encompassing all components involved. Hence, focus was placed not only on single products, but much more on their interfacing, and the clinical infrastructure, in particular, had to undergo substantial changes. The overall understanding of the interaction between such factors, quite different in their nature, was crucial to overcome the arising regulatory obstacles. This essay describes the evolution of the on-line HDF procedure from the regulatory point of view. A simplified diagram demonstrates the path taken from the former regulatory understanding to the realization of necessary changes. That achievement was only possible through 'management of preview' and consequent promotion of technical and medical innovations as well as regulatory re-evaluations. PMID:22188690

Kümmerle, Wolfgang

2011-01-01

179

On-Line Literature Searching as a Research Method  

Microsoft Academic Search

Database searching permits the user to conduct certain types of research beyond the mere gathering of information. An example is provided by conducting a study of geographic bias in the print media using Magazine Index. Though there are limitations in conducting such research the potential exists for using on-line databases as a powerful research tool.

David A. Cohen

1987-01-01

180

On-line monitoring applications in nuclear power plants  

Microsoft Academic Search

The nuclear power industry is working to reduce generation costs by adopting condition-based maintenance strategies and automating testing activities. These developments have stimulated great interest in on-line monitoring (OLM) technologies and new diagnostic and prognostic methods to anticipate, identify, and resolve equipment and process problems and ensure plant safety, efficiency, and immunity to accidents. This paper provides examples of these

H. M. Hashemian

2011-01-01

181

On-Line Geometric Modeling Notes REPARAMETERIZING B EZIER CURVES  

E-print Network

. However, when we wish to examine general B-spline curves, which are piecewise B´ezier curves, we will needOn-Line Geometric Modeling Notes REPARAMETERIZING B ´EZIER CURVES Kenneth I. Joy Visualization´ezier curve is the representation that is most utilized in computer graphics and geometric modeling

California at Davis, University of

182

On-Line Geometric Modeling Notes SUBDIVISION CURVES  

E-print Network

are commonly called subdivision curves as the methods are based upon the binary subdivision of the uniform B-spline the Quadratic Uniform B-Spline Curve · Subdivision Curves based upon the Cubic Uniform B-Spline CurveOn-Line Geometric Modeling Notes SUBDIVISION CURVES Kenneth I. Joy Visualization and Graphics

California at Davis, University of

183

Specialties [solar wings, oil spill avoidance, on-line patents  

Microsoft Academic Search

The author briefly describes the development of the solar wing, a solar powered prototype aircraft named Pathfinder. The author also describes a navigation system to help ships avoid oil-spills and other obstacles. The author also briefly describes access to patents using on-line methods

J. A. Adam

1995-01-01

184

Falcon: On-line Monitoring and Steering of Parallel Programs  

Microsoft Academic Search

Advances in high performance computing, communications, and user interfaces are enabling developers to construct increasingly interactive high performance applications. The Falcon system presented in this paper supports such interactivity by providing runtime libraries, tools, and user interfaces that jointly permit the on-line monitoring and steering of large-scale parallel codes. The principal aspects of Falcon described in this paper are its

Weiming Gu; Greg Eisenhauer; Karsten Schwan; Jeffrey Vetter

1995-01-01

185

On-line Generalized Steiner Problem Baruch Awerbuch Yossi Azary  

E-print Network

Chapter 9 On-line Generalized Steiner Problem Baruch Awerbuch Yossi Azary Yair Bartalz Abstract The Generalized Steiner Problem (GSP) is de ned as follows. We are given a graph with non-negative weights nodes of each pair are connected by a path. O -line generalized Steiner problem approxima- tion

Azar, Yossi

186

Adaptive and Self-Confident On-Line Learning Algorithms  

Microsoft Academic Search

Most of the performance bounds for on-line learningalgorithms are proven assuming a constantlearning rate. To optimize these bounds, the learningrate must be tuned based on quantities that aregenerally unknown, as they depend on the wholesequence of examples. In this paper we show thatessentially the same optimized bounds can be obtainedwhen the algorithms adaptively tune theirlearning rates as the examples in

Peter Auer; Claudio Gentile

2000-01-01

187

Using On-line Corpus To Facilitate Language Learning.  

ERIC Educational Resources Information Center

The potential for on-line corpus in language teaching and learning has been the focus of attention on the part of teachers and researchers for some time now. The purpose of this study is to report on an Internet-based concordance approach to language learning and to investigate both qualitatively and quantitatively Taiwanese…

Sun, Yu-Chih

188

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

ERIC Educational Resources Information Center

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

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

189

Space and Movable Equipment On-line Inventory  

E-print Network

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

Hayden, Nancy J.

190

Profile of on-line anatomy information resources: design and instructional implications.  

PubMed

This study is based on a review of 40 on-line anatomy web resources compiled from sites selected from our own searches as well as sites reviewed and published by an external group (Voiglio et al., 1999, Surg. Radiol. Anat. 21:65-68; Frasca et al., 2000, Surg. Radiol. Anat. 22:107-110). The purpose of our survey was to propose criteria by which anatomy educators could judge the characteristics of the currently available web-based resources for incorporation into the courses they teach. Each site was reviewed and scored based on a survey matrix that included four main categories: 1). site background information, 2). content components, 3). interactivity features, and 4). user interface design components. The average score of the reviewed sites was 3.3 of the total possible score of 10, indicating the limited use of computer-based design features by the majority of sites. We found, however, a number of programs in each of the survey categories that could serve as prototypes for designing future on-line anatomy resources. From the survey we conclude that various design features are less important than the comprehensiveness, depth, and logical organization of content. We suggest that the content should be sufficient for supporting explicitly defined educational objectives, which should target specific end-user populations. The majority of anatomy programs currently accessible on-line fall short of these requirements. There is a need for a coordinated and synergistic effort to generate a comprehensive anatomical information resource that is of sufficient quality and depth to support higher levels of learning beyond the memorization of structure names. Such a resource is a prerequisite for meaningful on-line anatomy education. PMID:12486740

Kim, S; Brinkley, J F; Rosse, C

2003-01-01

191

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

Code of Federal Regulations, 2010 CFR

...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...

2010-04-01

192

Provision of data for on-line simulation.  

PubMed

A crucial factor for the quality and results of the on-line simulation of a municipal sewage treatment system is the provision of the requisite data in adequate quality and density. Since the measured data cannot be incorporated in a simulation model without prior processing, it should be prepared in such a way that it can be converted to the model-related input quantities. If individual input measuring signals fail, substitute value concepts must be developed which are based on the remaining information. With this it is possible to ensure the continuous provision of data. Various approaches are possible in seeking a solution to this problem. At the Wupperverband a detailed programme of investigation on the subject area of the processing of inflow data is being implemented as a component of future on-line simulation at Wuppertal-Buchenhofen STP. PMID:11443965

Rolfs, T; Bornemann, C; Kolisch, G; Londong, J

2001-01-01

193

On-line new event detection and tracking  

Microsoft Academic Search

Abstract We define and,describe,the related,problems of new,event,detection,and,event tracking,within,a stream of broadcast,news,stories. We,focus,on,a strict on-line setting-i.e., the system must make decisions about one story,before,looking,at any,subsequent,stories. Our ap- proach,to detection,uses,a single,pass,clustering,algo- rithm,and,a novel,thresholding,model,that,incorporates the properties,of events,as a major,component.,Our ap- proach,to tracking,is similar,to typical,information,filter- ing methods.,We,discuss,the,value,of “surprising” fea- tures that have unusual occurrence characteristics, and briefly explore,on-line adaptive,filtering to handle,evolv- ing events,in the

R. Swan; J. Allan

2000-01-01

194

On-line traffic assignment for optimal freeway corridor control  

SciTech Connect

Traffic management and control strategies in a network could be improved by employing a method that can simulate and evaluate the expected impacts of alternative strategies on network performance prior to implementation. Existing methods are based on assumptions not readily applicable in freeway corridors. Responding to the need for an approach able to handle composite networks such as freeway corridors and responsive to on-line control changes, a new method is presented in this paper. The new method, which integrates simulation with conventional assignments, overcomes major disadvantages of existing techniques, thus becoming more suitable for on-line optimal freeway-corridor control. The simulation/assignment method was tested with data from a typical freeway corridor in the Twin Cities Metropolitan Area. The test results indicate the ability of the proposed method to more accurately estimate traffic parameters under various traffic management and control strategies implemented in a freeway corridor.

Stephanedes, Y.J.; Argiropoulos, I.Z.; Michalopoulos, P. (Dept. of Civil and Mineral Engineering, Univ. of Minnesota, Minneapolis, MN (US))

1990-11-01

195

Digital video system for on-line portal verification  

NASA Astrophysics Data System (ADS)

A digital system has been developed for on-line acquisition, processing and display of portal images during radiation therapy treatment. A metal/phosphor screen combination is the primary detector, where the conversion from high-energy photons to visible light takes place. A mirror angled at 45 degrees reflects the primary image to a low-light-level camera, which is removed from the direct radiation beam. The image registered by the camera is digitized, processed and displayed on a CRT monitor. Advanced digital techniques for processing of on-line images have been developed and implemented to enhance image contrast and suppress the noise. Some elements of automated radiotherapy treatment verification have been introduced.

Leszczynski, Konrad W.; Shalev, Shlomo; Cosby, N. Scott

1990-07-01

196

A new on-line resource for psycholinguistic studies  

PubMed Central

Picture naming is a widely used technique in psycholinguistic studies. Here, we describe new on-line resources that our project has compiled and made available to researchers on the world wide web at http://crl.ucsd.edu/~aszekely/ipnp/. The website provides access to a wide range of picture stimuli and related norms in seven languages. Picture naming norms, including indices of name agreement and latency, for 520 black-and-white drawings of common objects and 275 concrete transitive and intransitive actions are presented. Norms for age-of-acquisition, word-frequency, familiarity, goodness-of-depiction, and visual complexity are included. An on-line database query system can be used to select a specific range of stimuli, based on parameters of interest for a wide range of studies on healthy and clinical populations, as well as studies of language development. PMID:23002322

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

2012-01-01

197

On-line particle-image velocimeter: an integrated approach.  

PubMed

We describe an on-line particle-image velocimeter (PIV) and its implementation for the measurement of the velocity field in steady and unsteady flows. The instrument uses up-to-date solid-state sensors, dedicated electronic boards, and digital microcomputers to combine the image-acquisition and processing steps into a single, fully integrated unit. A calibration experiment evaluates the accuracy of the velocity measurement instrument. The experiment consists of the measurement of the velocity distribution of a laminar wall jet and shows that the velocity, as well as the vorticity profiles, obtained by using the on-line PIV compare well with those obtained by means of a conventional photographic PIV and a numerical prediction. PMID:20885597

Lourenco, L M; Gogineni, S P; Lasalle, R T

1994-05-01

198

On-line analyzers to distributed control system linking  

SciTech Connect

The Analytical Development Section (ADS) of the Savannah River Laboratory is developing on-line analyzers to monitor various site processes. Data from some of the on-line analyzers (OLA's) will be used for process control by distributed control systems (DCS's) such as the Fisher PRoVOX. A problem in the past has been an efficient and cost effective way to get analyzer data onto the DCS data highway. ADS is developing a system to accomplish the linking of OLA's to PRoVOX DCS's. The system will be described, and results of operation in a research and development environment given. Plans for the installation in the production environment will be discussed.

Peterson, S.F.; Buchanan, B.R.; Sanders, M.A.

1990-01-01

199

Publishing Links to Astronomical Data On-line  

Microsoft Academic Search

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

A. Accomazzi; G. Eichhorn

2004-01-01

200

Linking From the ADS to Other On-line Resources  

Microsoft Academic Search

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

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

2002-01-01

201

On line neutron dose evaluation in patients under radiotherapy  

Microsoft Academic Search

Current improvements in radiotherapy require methods to evaluate their costs and benefits. A possible counterpart of the benefit\\u000a is the creation of a secondary, radiation induced cancer. A new procedure is presented to assess the peripheral dose delivered\\u000a to the patients due to photo-neutrons by means of a new on line digital detector. The events in the monitor have been

F. Sanchez-Doblado; C. Domingo; F. Gómez; J. L. Muñiz; R. Barquero; M. J. García-Fusté; G. Hartmann; M. T. Romero; J. A. Terrón; J. Pena; H. Schuhmacher; F. Wissmann; R. Böttger; A. Zimbal; F. Gutierrez; F. X. Guerre; J. Roselló; L. Nuñez; L. Brualla; F. Manchado; A. Lorente; E. Gallego; R. Capote; D. Planes; J. I. Lagares; R. Arráns; R. Colmenares; K. Amgarou; E. Morales; J. P. Cano; F. Fernández; G. Sroka-Pérez; O. Schramm

202

Efficient on-line estimation of autoregressive parameters  

Microsoft Academic Search

New procedures for estimating autoregressive parameters in AR(m) models are proposed. The proposed method allows for incorporation of auxiliary information into the estimation process and\\u000a produces estimation procedures, which are consistent and asymptotically efficient under certain regularity conditions. Also,\\u000a these procedures are naturally on-line and do not require storing all the data. Theoretical results are presented in the case\\u000a when

T. Sharia

2010-01-01

203

On-line new event detection and tracking  

Microsoft Academic Search

We define and describe the related problems of new event detection and event tracking within a stream of broadcast news stories. We focus on a strict on-line setting-i.e., the system must make decisions about one story before looking at any subsequent stories. Our ap- proach to detection uses a single pass clustering algo- rithm and a novel thresholding model that

James Allan; Ron Papka; Victor Lavrenko

1998-01-01

204

A new on-line resource for psycholinguistic studies  

Microsoft Academic Search

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

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

2004-01-01

205

On-Line Optimization for Internal Plunge Grinding  

Microsoft Academic Search

An on-line optimization system was developed for cylindrical plunge grinding to minimize production time while ensuring part quality requirements. The system is capable of optimizing the grinding and dressing parameters in response to in-process and post-process measurements which characterize the process and update the process model. As compared with the previous system, the present one encompasses a more complete set

G. Xiao; S. Malkin

1996-01-01

206

On-line medical record/RIS/PACS interface  

NASA Astrophysics Data System (ADS)

The University of Florida Medical Center has developed an On-Line Medical Record (OLMR) that serves as a repository of patient information from a number of individual department databases, the Radiology Information System included, and builds a comprehensive electronic patient based chart. The OLMR, widely used by clinicians to view information on test results, will be expanded to add image and graphics display capabilities, and will require pointers to PACS images.

Honeyman-Buck, Janice C.; Frost, Meryll M.; Staab, Edward V.

1994-05-01

207

On-Line Simulation of Block-Diagram Systems  

Microsoft Academic Search

This paper is concerned with a general approach to the on-line simulation of block-diagram systems. These systems may be analog, digital, or hybrid; memory or memoryless; explicit or implicit (i.e., possessing loops of memoryless elements); vector or scalar; or of a more specialized nature, such as dynamic systems with integrators as memory elements; and simulation may be conducted in one

M. L. Dertouzos; M. E. Kaliski; K. P. Polzen

1969-01-01

208

User Behavior Mining for On-Line GUI Adaptation  

Microsoft Academic Search

On-Line Graphics User Interface (GUI) Adaptation technology, which can predict and highlight user’s next operation in menu\\u000a based graphics interface, is the key problem in next generation pervasive human computer interaction, especially for remote\\u000a control device like Wiimote assisting TV interaction. In this paper, a hierarchical Markov model is proposed for mining and\\u000a predicting user’s behavior from Wiimote control sequence.

Wei Pan; Yiqiang Chen; Junfa Liu

2009-01-01

209

A service platform for on-line games  

Microsoft Academic Search

Providing a satisfying experience for players of on-line first-person and multiplayer role-playing games is greatly influenced by the distribution and scalability of the game server infrastructure. Deploying a large, dedicated server infrastructure to support a single game title, however, is an expensive approach that does not make the best use of available resources. In this work-in-progress report, we propose a

Debanjan Saha; Sambit Sahu; Anees Shaikh

2003-01-01

210

On-line cursive handwriting recognition using speech recognition methods  

Microsoft Academic Search

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

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

1994-01-01

211

Optimization of on-line principal component analysis  

NASA Astrophysics Data System (ADS)

Various techniques, used to optimize on-line principal component analysis, are investigated by methods of statistical mechanics. These include local and global optimization of node-dependent learning-rates which are shown to be very efficient in speeding up the learning process. They are investigated further for gaining insight into the learning rates' time-dependence, which is then employed for devising simple practical methods to improve training performance. Simulations demonstrate the benefit gained from using the new methods.

Schlösser, E.; Saad, D.; Biehl, M.

1999-06-01

212

On-Line Electric Vehicle using inductive power transfer system  

Microsoft Academic Search

In this paper, 3 generations of OLEV (On-Line Electrical Vehicle) are introduced. The 1st generation of OLEV is conventional E-type structure. The air gap of the 1st generation is 1cm and the input to output power efficiency is 80% with 3 kW output power. The ultra slim U-type mono rail structure is applied to the 2nd generation of OLEV. This

Sungwoo Lee; Jin Huh; Nam-Sup Choi; Gyu-Hyeoung Cho; Chun-Taek Rim

2010-01-01

213

On-line measurements of diesel nanoparticle composition and volatility  

Microsoft Academic Search

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

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

2003-01-01

214

Vibration-insensitive interferometer for on-line measurements.  

PubMed

We have realized a digital Twyman-Green interferometer to measure the quality of optical surfaces in unstable environments. The system yields accurate measurements even in the presence of severe mechanical vibrations. The interferograms are decoded by application of a spatial-carrier phase-shifting fringe-analysis technique. The interferometer was mounted over a production machine and used for on-line measurements of aspheric mirror surfaces during the figuring and polishing process. PMID:21060385

Melozzi, M; Pezzati, L; Mazzoni, A

1995-09-01

215

On-Line Geometric Modeling Notes THE SUPPORT OF A  

E-print Network

On-Line Geometric Modeling Notes THE SUPPORT OF A NORMALIZED B-SPLINE BLENDING FUNCTION Kenneth I, Davis Overview A B-spline blending function Ni,k(t) has compact support. This means that the function+k}, the normalized B-spline blending function Ni,k(t) is positive if and only if t [ti, ti+k). #12;We can show

California at Davis, University of

216

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

E-print Network

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

Zhang, Liangfang

217

Multi-parameter on-line coal bulk analysis  

SciTech Connect

This was a four-year grant that was given a no cost extension for one more year. The purpose of the grant was to develop a pulsed neutron-based technique that could measure on-line all the major and minor elements in coal. Such measurements would allow the continuous monitoring of bulk parameters such as coal heating value (BTU/lb), volatile matter, moisture etc., deemed important to the coal industry. Such parameters, along with the continuous measurement of elements such as sulfur and sodium, are of major economic and environmental concern, and their measurement would assist in a more efficient use of the coal-fired boilers, as well as limiting emissions controlled by the 1990 Clean Air Act Amendments. It was hoped that this study would lead to the development of a technique able to create a marketable product, an On-Line Elemental Coal Analyzer. The study was separated in the following major parts: (1) Devise an efficient system for the detection of gamma rays; (2) Prior to experimentation, perform modeling and simulations for items such as detector shielding, coal sample configuration, and neutron tube collimation; (3) Develop a computer code for data reduction and analysis; (4) Measure the elemental composition of various coal samples; and (5) Design a prototype, on-line elemental coal analyzer, based on the PFTNA principle.

NONE

1999-02-01

218

Review of trigger and on-line processors at SLAC  

SciTech Connect

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.

Lankford, A.J.

1984-07-01

219

MASKER MASKER TARGET TARGET TARGET  

E-print Network

from a large speech database (Ives et al,2005). The original speech is from one speaker Probabilitycorrect -6 dB 0 dB Listeners were presented with two phrases of concurrent speech syllables. The masker syllables coincided with the second and third target syllables. The speech syllables were taken

Ives, D. Timothy

220

The CAOS project: Interdisciplinary monitoring for the identification of hydrologic functional units  

NASA Astrophysics Data System (ADS)

Hydrologic functional units (also known as hydrologic response units or lead topologies) form the basis of many hydrological models and are usually delineated with a simple GIS analysis. Despite the fact that it is a common concept, there are few studies on the determination of hydrologic response units in the real world. This study is part of ongoing research within the DFG research unit CAOS (Catchments As Organized Systems) and aims at identifying functional units in the field. This ambitious endeavor is based on an interdisciplinary monitoring design involving a large number of sensor clusters, but also includes tracer studies, remote sensing, geophysical exploration, and meteorological and ecological investigations. Each sensor cluster is designed to observe a variety of different fluxes and state variables above ground and below ground in the saturated and unsaturated zone. The number of sensors is chosen to capture the spatial variability as well as to characterize the average dynamics. The sampling design produces an extensive data set over a large number of functional units controlled by different topologies, geological-, soil- and vegetation characteristics. It enables us to test our hypotheses on system functioning, investigate links between internal pattern dynamics and integral responses, and determine minimum data needs for system characterization. The resulting data sets and system understanding will be used to develop, parameterize and validate a hydrological model based on functional units. Research is focused on the Attert catchment in Luxemburg.

Blume, Theresa

2013-04-01

221

Chemical analysis of the Chinese herbal medicine Gan-Cao (licorice).  

PubMed

Gan-Cao, or licorice, is a popular Chinese herbal medicine derived from the dried roots and rhizomes of Glycyrrhiza uralensis, G. glabra, and G. inflata. The main bioactive constituents of licorice are triterpene saponins and various types of flavonoids. The contents of these compounds may vary in different licorice batches and thus affect the therapeutic effects. In order to ensure its efficacy and safety, sensitive and accurate methods for the qualitative and quantitative analyses of saponins and flavonoids are of significance for the comprehensive quality control of licorice. This review describes the progress in chemical analysis of licorice and its preparations since 2000. Newly established methods are summarized, including spectroscopy, thin-layer chromatography, gas chromatography, high-performance liquid chromatography (HPLC), liquid chromatography/mass spectrometry (LC/MS), capillary electrophoresis, high-speed counter-current chromatography (HSCCC), electrochemistry, and immunoassay. The sensitivity, selectivity and powerful separation capability of HPLC and CE allows the simultaneous detection of multiple compounds in licorice. LC/MS provides characteristic fragmentations for the rapid structural identification of licorice saponins and flavonoids. The combination of HPLC and LC/MS is currently the most powerful technique for the quality control of licorice. PMID:18703197

Zhang, Qingying; Ye, Min

2009-03-13

222

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

NASA Astrophysics Data System (ADS)

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

Hayashi, Katsuro

2011-06-01

223

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

Microsoft Academic Search

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

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

2003-01-01

224

Ethan Burns (UNH) Iterative-deepening Search with On-line Tree Size Prediction 1 / 30 Iterative-deepening Search with On-line Tree Size Prediction  

E-print Network

Ethan Burns (UNH) Iterative-deepening Search with On-line Tree Size Prediction ­ 1 / 30 Iterative-deepening Search with On-line Tree Size Prediction Ethan Burns and Wheeler Ruml {eaburns, ruml} at cs Evaluation Ethan Burns (UNH) Iterative-deepening Search with On-line Tree Size Prediction ­ 2 / 30 On

Ruml, Wheeler

225

Canopy spectral and chemical diversity from lowland to tree line in the Western Amazon using CAO-VSWIR  

NASA Astrophysics Data System (ADS)

Canopy chemistry and spectroscopy offer insight into community assembly and ecosystem processes in high-diversity tropical forests. Results from one lowland site in the Peruvian Amazon suggests both an environmental and an evolutionary component of canopy trait development however, the degree to which larger environmental differences influence diversity in canopy traits and their respective spectroscopic signatures across remains poorly understood. The spectranomics approach explicitly connects phylogenetic, chemical and spectral patterns in tropical canopies providing the basis for analysis, while high-fidelity, airborne remote sensing measurements extend plot-level data to landscape-scale, achieving a comprehensive view of the region. In 2011, the Carnegie Airborne Observatory (CAO) was used to sample a large region of the Western Amazon Basin in southeastern Peru, extending from lowlands to tree line in the Andean mountains. The CAO Visible-Shortwave Imaging Spectrometer (VSWIR) collected 480-band high-fidelity imaging spectroscopy data of the forest canopy, while its high-resolution LiDAR captured information on canopy structure and the underlying terrain. The data were used to quantify relationships between environmental gradients and canopy chemical and spectral diversity. Results suggest strong environmental control with additional phylogenetic influence over canopy spectral and chemical properties, particularly those related to structure, defense and metabolic function. Data from CAO-VSWIR extends the large range in canopy chemical and spectral diversity related to environmental factors across the Western Amazon Basin.

Martin, R. E.; Asner, G. P.

2012-12-01

226

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

PubMed Central

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

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

2014-01-01

227

Roles of regulated internalization in the polarization of cell surface Wei Tian1, Youfang Cao1, Amber Ismael2, David Stone2, Jie Liang1  

E-print Network

Cao1, Amber Ismael2, David Stone2, Jie Liang1 Accepted, Conf Proc IEEE Eng Med Biol Soc. 2014 Abstract.edu 2D. Stone is with Faculty of the Department of Biological Science, University of Illinois at Chicago

Liang, Jie

228

On-line composition with laser-based techniques  

SciTech Connect

Current methods for determining the composition of coal gasification streams generally involve sampling, some treatment, and inherent delay times prior to analysis. Optical instrumentation, on the other hand, provides the potential for on-line, rapid-response monitoring of gasifier streams. Among the optical technques that appear quite promising for this application are coherent anti-Stokes Raman scattering (CARS), laser-induced breakdown spectroscopy (LIBS), Fourier transform infrared spectroscopy (FTIR), laser-induced fluorescence (LIF), and synchronous detection of laser-induced fluorescence (SDLIF).

Finch, F.T.; Hartford, A. Jr.

1982-01-01

229

GOLD⢠Genomes OnLine Database  

NSDL National Science Digital Library

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

230

On-line optimal NGL recovery in lean oil plants  

SciTech Connect

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.

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

231

Change from conventional haemodiafiltration to on-line haemodiafiltration  

Microsoft Academic Search

urea rebound ) 1.12±0.17 vs 1.26±0.20 (P <0.01), BUN time average concentration ( TAC ) 44.4±9 vs Background. On-line haemodiafiltration (HDF ) is a technique which combines diVusion with elevated con- 40.6±10 mg\\/dl (P <0.05) and protein catabolic rate (PCR) 1.13±0.22 vs 1.13±0.24 g\\/kg (NS). There was vection and uses pyrogen-free dialysate as a replace- ment fluid. The purpose of

Francisco Maduell; Carlos del Pozo; Hector Garcia; Laura Sanchez; Julio Hdez-Jaras; Maria D. Albero; Consuelo Calvo; Isidro Torregrosa; Victor Navarro

232

Fuzzy cellular model for on-line traffic simulation  

E-print Network

This paper introduces a fuzzy cellular model of road traffic that was intended for on-line applications in traffic control. The presented model uses fuzzy sets theory to deal with uncertainty of both input data and simulation results. Vehicles are modelled individually, thus various classes of them can be taken into consideration. In the proposed approach, all parameters of vehicles are described by means of fuzzy numbers. The model was implemented in a simulation of vehicles queue discharge process. Changes of the queue length were analysed in this experiment and compared to the results of NaSch cellular automata model.

P?aczek, Bart?omiej

2011-01-01

233

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

PubMed Central

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

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

2013-01-01

234

CONTROL: Continuous Output and Navigation Technology with Refinement OnLine  

E-print Network

. Hellerstein, Bruce Lo, Chris Olston, Bhaskaran Raman, Vijayshankar Raman, Tali Roth, and Kirk Wylie Department, cao, bhaskar, rshankar, tali, wylie}@cs.berkeley.edu ABSTRACT ''he2 gyx'''yv2 proje^TMt2 ---t2 ...FgF2

California at Irvine, University of

235

On-line social interactions and executive functions  

PubMed Central

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

Ybarra, Oscar; Winkielman, Piotr

2012-01-01

236

Uranium determination on-line using remote fiber fluorimetry  

NASA Astrophysics Data System (ADS)

Remote Fiber Fluorimetry (RFF) is being developed at Savannah River Laboratory for the on-line determination of uranium in plant process streams. A prototype system suitable for plant use has been designed and is being built. RFF has four major components: a laser, an optical fiber, an optrode, and a detector. Essentially, an optical fiber carries laser radiation from a laser to a process sampling point. An optrode (the optical analog of an electrode) couples the laser light into a sample solution. Fluorescence from the sample is collected by the optrode and goes back through the same fiber to a detector. Using an RFF system, the analysis can be made both simply and safely. The laser and detector are placed at a convenient remote location, such as the control room. Optical fibers run from the laser to either the sample aisle or process tanks. Multiplexing makes it possible to analyze several different sampling positions with one laser and detector. The incentives for demonstrating this technology include reduced analysis time and decreased sample load for the laboratory. Since RFF is a remote on-line technique, sample handling is avoided. Analysis time is five minutes (versus the four-hour minimum needed now), and the control laboratory has a decreased sample load. Finally, RFF could easily be incorporated into a large-scale process control system.

Malstrom, R. A.

237

On-line diagnosis of sequential systems, 3  

NASA Technical Reports Server (NTRS)

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.

Sundstrom, R. J.

1975-01-01

238

Precise On-line Position Measurement for Particle Therapy  

E-print Network

An on-line beam position monitoring and regular beam stability tests are of utmost importance for the Quality Assurance (QA) of the patient treatment at any particle therapy facility. The Gantry${0.5 mm}2$ at the Paul Scherrer Institute uses a strip ionization chamber for the on-line beam position verification. The design of the strip chamber placed in the beam in front of the patient allows for a small beam penumbra in order to achieve a high-quality lateral beam delivery. The detector granularity and the low noise allow the reconstruction of the signals offered by Gantry${0.5 mm}2$ with a precision of about 0.1 mm. The frond-end electronics and the whole data processing sequence have been optimized for minimizing the dead time between the beam applications to about 2 ms: the charge collection is performed in about 1 ms, read-out takes place in 100 $\\mu$s while data verification and logging are completed in less than 1 ms. The sub-millimeter precision of the lateral reconstruction allows the dose inhomogenei...

Actis, O; König, S

2014-01-01

239

Increased Cortical Thickness in Professional On-Line Gamers  

PubMed Central

Objective The bulk of recent studies have tested whether video games change the brain in terms of activity and cortical volume. However, such studies are limited by several factors including cross-sectional comparisons, co-morbidity, and short-term follow-up periods. In the present study, we hypothesized that cognitive flexibility and the volume of brain cortex would be correlated with the career length of on-line pro-gamers. Methods High-resolution magnetic resonance scans were acquired in twenty-three pro-gamers recruited from StarCraft pro-game teams. We measured cortical thickness in each individual using FreeSurfer and the cortical thickness was correlated with the career length and the performance of the pro-gamers. Results Career length was positively correlated with cortical thickness in three brain regions: right superior frontal gyrus, right superior parietal gyrus, and right precentral gyrus. Additionally, increased cortical thickness in the prefrontal cortex was correlated with winning rates of the pro-game league. Increased cortical thickness in the prefrontal and parietal cortices was also associated with higher performance of Wisconsin Card Sorting Test. Conclusion Our results suggest that in individuals without pathologic conditions, regular, long-term playing of on-line games is associated with volume changes in the prefrontal and parietal cortices, which are associated with cognitive flexibility. PMID:24474988

Hyun, Gi Jung; Shin, Yong Wook; Kim, Bung-Nyun; Cheong, Jae Hoon; Jin, Seong Nam

2013-01-01

240

Overcoming the polarization catastrophe in the rocksalt oxides MgO and CaO  

NASA Astrophysics Data System (ADS)

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

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

2014-09-01

241

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

NASA Astrophysics Data System (ADS)

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.

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

2013-12-01

242

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

PubMed

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

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

2013-11-01

243

Ion source development for isotope separator on-line based radioactive nuclear beam facility at KEK-Tanashi  

NASA Astrophysics Data System (ADS)

For an isotope separator on-line based radioactive nuclear beam facility at KEK-Tanashi, two different types of ion sources are currently employed: a single stage 6.4 GHz electron cyclotron resonance ion source for 18Ne2+ and 19Ne2+ ions and a surface ionization-type ion source for 8Li1+ ions. The production target for Ne radioisotopes is LiF powder. Enclosed in a water-cooled Cu target cell, the target can sustain proton beam power of 120 W for a long term. The methods to suppress unwanted isotopes, like 19F in 19Ne and 18O in 18Ne, are discussed. For the production of 8Li1+ with the surface ionization-type ion source, a recoil-catcher method is adopted. The feasibility is discussed, comparing to a thick target method.

Jeong, S. C.; Ishiyama, H.; Ishida, Y.; Kawakami, H.; Kawashima, H.; Miyatake, H.; Mizutani, S.; Oyaizu, M.; Takaku, S.; Tojyo, E.; Yoshikawa, N.; Wada, M.; Katayama, I.; Nomura, T.

2000-02-01

244

Dose-volume delivery guided proton therapy using beam on-line PET system  

SciTech Connect

Proton therapy is one form of radiotherapy in which the irradiation can be concentrated on a tumor using a scanned or modulated Bragg peak. Therefore, it is very important to evaluate the proton-irradiated volume accurately. The proton-irradiated volume can be confirmed by detection of pair annihilation gamma rays from positron emitter nuclei generated by the target nuclear fragment reaction of irradiated proton nuclei and nuclei in the irradiation target using a positron emission tomography (PET) apparatus, and dose-volume delivery guided proton therapy (DGPT) can thereby be achieved using PET images. In the proton treatment room, a beam ON-LINE PET system (BOLPs) was constructed so that a PET apparatus of the planar-type with a high spatial resolution of about 2 mm was mounted with the field of view covering the isocenter of the beam irradiation system. The position and intensity of activity were measured using the BOLPs immediately after the proton irradiation of a gelatinous water target containing {sup 16}O nuclei at different proton irradiation energy levels. The change of the activity-distribution range against the change of the physical range was observed within 2 mm. The experiments of proton irradiation to a rabbit and the imaging of the activity were performed. In addition, the proton beam energy used to irradiate the rabbit was changed. When the beam condition was changed, the difference between the two images acquired from the measurement of the BOLPs was confirmed to clearly identify the proton-irradiated volume.

Nishio, Teiji; Ogino, Takashi; Nomura, Kazuhiro; Uchida, Hiroshi [Particle Therapy Division, Research Center for Innovative Oncology, National Cancer Center, Kashiwa, 6-5-1 Kashiwano-ha, Kashiwa-shi, Chiba 277-8577 (Japan); Director, National Cancer Center Hospital, 5-5-1 Tsukiji, Chyuou-ku, Tokyo 104-0045 (Japan); The 5th Research Group, Hamamatsu Photonics K. K., 5000 Hirakuchi, Hamakita-shi, Shizuoka 434-8601 (Japan)

2006-11-15

245

On-line monitoring of mercury concentrations in flue gases  

SciTech Connect

Gas phase mercury concentrations in flue gases from a variety of combustion sources including waste and sewage sludge incineration were measured by means of on-line monitors. As the monitor itself is solely sensitive to elemental mercury, the operation modes with/without a reduction unit in place upstream of the monitor have shown promise in distinguishing between oxidized mercury (Hg(ox.)) and elemental mercury (Hg(0)) concentrations. The monitors were used to investigate mercury removal over wet and dry air pollution control systems; in addition to that, emphases was placed on mercury speciation measurements at the inlet of air pollution control trains (APC) to reveal which mercury compound needs to be removed, and on mercury speciation upstream and downstream of wet scrubbers to better understand the effect of wet scrubbers on the Hg(0)/Hg(ox.) ratio.

Bittner, J.; Wilhelm, G.; Lindau, L.

1999-07-01

246

Continuous on-line measurement of lignin in wood pulp  

NASA Astrophysics Data System (ADS)

We are working toward the development of an instrument for the continuous on-line measurement of the lignin concentration in wood pulp. The system will be used as a primary sensor for process control in the pulp and paper industry. The measurement is based on the fluorescence properties of lignin. The instrument will use an optical fiber probe to separate the light generation, detection, and analysis equipment from the hostile process environment. To provide the background data necessary for the design of the instrument, we have characterized the fluorescence properties of lignin bound to wood pulp. A nitrogen laser was used as the excitation source and an intensified photodetector array capable of fast grating was used to obtain time-resolved fluorescence spectra.

Jeffers, Larry A.; Malito, Michael L.

1992-03-01

247

An expert system to perform on-line controller tuning  

NASA Technical Reports Server (NTRS)

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.

Litt, Jonathan S.

1990-01-01

248

Holographic digital microscopy in on-line process control  

NASA Astrophysics Data System (ADS)

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.

Osanlou, Ardeshir

2011-09-01

249

Issues for Bringing Electron Beam Irradiators On-Line  

SciTech Connect

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

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

1999-04-20

250

A versatile apparatus for on-line emission channeling experiments  

NASA Astrophysics Data System (ADS)

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 56Mn probes implanted into GaAs.

Silva, M. R.; Wahl, U.; Correia, J. G.; Amorim, L. M.; Pereira, L. M. C.

2013-07-01

251

On-line single particle analysis of environmental tobacco smoke  

SciTech Connect

Environmental Tobacco Smoke (ETS) is a major component in indoor and outdoor air pollution. It has been estimated that ETS accounts for approximately 2.7% of fine organic aerosol emissions in the Los Angeles area and the adverse health effects of cigarette emissions have been well documented. Particulate analysis by conventional analytical methods, such as GC/MS, do not provide information on individual aerosol particles due to the off-line collection and sampling procedures. Aerosol Time-Flight Mass Spectrometry is an on-line analytical technique that is uniquely capable of single particle analysis, simultaneously providing information on particle size and chemical composition. It will be demonstrated that this technique can be used to show how the chemical composition of ETS particles changes as a function of size. Data demonstrating the ability to monitor chemical composition and size change as a function of time will also be presented.

Prather, K.A.; Morrical, B.O. [Univ. of California, Riverside, CA (United States)

1995-12-01

252

Influence of high-temperature steam on the reactivity of CaO sorbent for CO? capture.  

PubMed

Calcium looping is a high-temperature CO(2) capture technology applicable to the postcombustion capture of CO(2) from power station flue gas, or integrated with fuel conversion in precombustion CO(2) capture schemes. The capture technology uses solid CaO sorbent derived from natural limestone and takes advantage of the reversible reaction between CaO and CO(2) to form CaCO(3); that is, to achieve the separation of CO(2) from flue or fuel gas, and produce a pure stream of CO(2) suitable for geological storage. An important characteristic of the sorbent, affecting the cost-efficiency of this technology, is the decay in reactivity of the sorbent over multiple CO(2) capture-and-release cycles. This work reports on the influence of high-temperature steam, which will be present in flue (about 5-10%) and fuel (?20%) gases, on the reactivity of CaO sorbent derived from four natural limestones. A significant increase in the reactivity of these sorbents was found for 30 cycles in the presence of steam (from 1-20%). Steam influences the sorbent reactivity in two ways. Steam present during calcination promotes sintering that produces a sorbent morphology with most of the pore volume associated with larger pores of ?50 nm in diameter, and which appears to be relatively more stable than the pore structure that evolves when no steam is present. The presence of steam during carbonation reduces the diffusion resistance during carbonation. We observed a synergistic effect, i.e., the highest reactivity was observed when steam was present for both calcination and carbonation. PMID:22191682

Donat, Felix; Florin, Nicholas H; Anthony, Edward J; Fennell, Paul S

2012-01-17

253

Improved Retrieval of Chlorophyll and Carotenoids Contents at the Canopy Scale Using Hyperspectral CAO Data and PROSAIL Model  

NASA Astrophysics Data System (ADS)

The sustainability of biodiversity requires frequent and spatially detailed assessment of species number and distribution, among other information. Remote sensing is one of the most promising way to achieve this environmental management due to reasonable cost and accuracy. However, the use of airborne and spaceborne data remains challenging: sensors must combine the appropriate spatial and spectral resolutions to retrieve pertinent environmental parameters that will permit identification of specific properties of organisms present in an ecosystem. Leaf area index (LAI), canopy structure and pigment composition of vegetation are valuable information to study ecosystem dynamics and distinguish between many species. Chlorophyll and carotenoid pigments are of particular interest because they are involved in photosynthesis, but until now, remote sensing was unable to assess these pigments separately and accurately. Some advances have been made recently with the separation of these pigments in PROSPECT-5, a radiative transfer model that simulates leaf spectral reflectance and transmittance at 1 nm resolution. PROSAIL, the joint vegetation canopy reflectance model associating PROSPECT-5 with 4SAIL, the latest version of the SAIL model, was first run in direct mode to design vegetation indices sensitive to leaf pigments. Subsequently, we retrieved chlorophyll and carotenoid contents using PROSAIL with CAO (Carnegie Airborne Observatory) data acquired in Hawaii. The CAO, an imaging spectrometer coupled with a 3-D laser scanner, has already demonstrated its ability to manage biodiversity in various ecosystems like tropical rainforests or savannah. Its performance make it particularly adapted to assess vegetation structure, biochemistry, and then fluxes. The first results obtained when processing CAO images with PROSAIL are promising in terms of chlorophyll and carotenoid retrieval at the canopy scale. They show that our approach can provide original information on vegetation and hopefully new indicators to help manage and conserve biodiversity. They open new fields of investigation in the domain of mapping and monitoring Earth ecosystems from present operational (Aviris, Hyperion) or future (EnMap, HyspIRI) airborne and spaceborne sensors offering high spectral resolution data.

Feret, J.; Asner, G. P.; Jacquemoud, S.; François, C.

2008-12-01

254

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

SciTech Connect

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.

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

2013-08-01

255

On-line sterilization of cheese whey using ultraviolet radiation.  

PubMed

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

Mahmoud, N S; Ghaly, A E

2004-01-01

256

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

Federal Register 2010, 2011, 2012, 2013

...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...

2010-09-22

257

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

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Operating Characteristic (OC) curves for on-line sampling...42.143 Operating Characteristic (OC) curves for on-line sampling...contains the Operating Characteristic (OC) curve for each of the...

2010-01-01

258

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

EPA Science Inventory

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

259

Virtual laboratories: Collaborative environments and facilities-on-line  

SciTech Connect

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

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

1995-07-01

260

Using on-line altered auditory feedback treating Parkinsonian speech  

NASA Astrophysics Data System (ADS)

Patients with advanced Parkinson's disease tend to have dysarthric speech that is hesitant, accelerated, and repetitive, and that is often resistant to behavior speech therapy. In this pilot study, the speech disturbances were treated using on-line altered feedbacks (AF) provided by SpeechEasy (SE), an in-the-ear device registered with the FDA for use in humans to treat chronic stuttering. Eight PD patients participated in the study. All had moderate to severe speech disturbances. In addition, two patients had moderate recurring stuttering at the onset of PD after long remission since adolescence, two had bilateral STN DBS, and two bilateral pallidal DBS. An effective combination of delayed auditory feedback and frequency-altered feedback was selected for each subject and provided via SE worn in one ear. All subjects produced speech samples (structured-monologue and reading) under three conditions: baseline, with SE without, and with feedbacks. The speech samples were randomly presented and rated for speech intelligibility goodness using UPDRS-III item 18 and the speaking rate. The results indicted that SpeechEasy is well tolerated and AF can improve speech intelligibility in spontaneous speech. Further investigational use of this device for treating speech disorders in PD is warranted [Work partially supported by Janus Dev. Group, Inc.].

Wang, Emily; Verhagen, Leo; de Vries, Meinou H.

2005-09-01

261

Self-checking on-line testable static RAM  

NASA Technical Reports Server (NTRS)

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.

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

1993-01-01

262

An on-line library of afterglow light curves  

NASA Astrophysics Data System (ADS)

Numerical studies of afterglow jets reveal significant qualitative differences with simplified analytical models. We present an on-line library of synthetic afterglow light curves and broadband spectra for use in interpreting observational data. Light curves have been calculated for various physics settings such as explosion energy and circumburst structure, as well as differing jet parameters and observer angle and redshift. Calculations gave been done for observer frequencies ranging from low radio to X-ray and for observer times from hours to decades after the burst. The light curves have been calculated from high-resolution 2D hydrodynamical simulations performed with the RAM adaptive-mesh refinement code and a detailed synchrotron radiation code. The library will contain both generic afterglow simulations as well as specific case studies and will be freely accessible at http://cosmo.nyu.edu/afterglowlibrary. The synthetic light curves can be used as a check on the accuracy of physical parameters derived from analytical model fits to afterglow data, to quantitatively explore the consequences of varying parameters such as observer angle and for accurate predictions of future telescope data.

van Eerten, Hendrik J.; MacFadyen, Andrew I.; Zhang, Weiqun

2011-08-01

263

Performing maintenance activities on-line a risk perspective  

SciTech Connect

The US nuclear power industry is attempting to deal with the issue of optimizing the performance of maintenance activities with the advent of the maintenance rule. The impact of any maintenance activity on the safe operation of a nuclear power facility can be quantified on the basis of risk. Therefore, it is incumbent upon the industry to accommodate the regulator and present a maintenance optimization program in terms that explicitly address the potential risk inherent in its concept and implementation. The motivation for utilities to perform maintenance while the plant is operating (i.e., on-line) is readily perceived to offer the following advantages: 1. greater system availability; 2. higher plant capacity factor; 3. more evenly distributed workload for the maintenance department; and 4. overall safer plant operation. However, risks inherent in undertaking maintenance activities during power operation could amount to the realization that reapportionment of these tasks is not cost-beneficial. Therefore, it is important that any utility considering implementing such a paradigm in maintenance philosophy establish a rigorous process to select, perform, and monitor maintenance tasks performed while operating.

Darling, S.S.; Mairs, T.P. (Quadrex Energy Services Corporation, Campbell, CA (United States))

1993-01-01

264

Enterprise utilization of "always on-line" diagnostic study archive.  

PubMed

To meet demands for enterprise image distribution, an "always on-line" image storage archive architecture was implemented before soft copy interpretation. It was presumed that instant availability of historical diagnostic studies would elicit a substantial utilization. Beginning November 1, 2000 an enterprise distribution archive was activated (Stentor, SanFrancisco, CA). As of August 8, 2001, 83,052 studies were available for immediate access without the need for retrieval from long-term archive. Image storage and retrieval logs for the period from June 12, 2001 to August 8, 2001 were analyzed. A total of 41,337 retrieval requests were noted for the 83,052 studies available as August 8, 2001. Computed radiography represented 16.8% of retrieval requests; digital radiography, 16.9%; computed tomography (CT), 44.5%; magnetic resonance (MR), 19.2%; and ultrasonography, 2.6%. A total of 51.5% of study retrievals were for studies less than 72 hours old. Study requests for cases greater than 100 days old represented 9.9% of all accessions, 9.7% of CT accessions, and 15.4% of MR accessions. Utilization of the archive indicates a substantial proportion of study retrievals for studies less than 72 hours after study completion. However, significant interest in historical CT and MR examinations was shown. PMID:12105703

McEnery, Kevin W; Suitor, Charles T; Thompson, Stephen K; Shepard, Jeffrey S; Murphy, William A

2002-01-01

265

Hubble Space Telescope on-line operations coordination  

NASA Astrophysics Data System (ADS)

An important aspect of the Hubble Space Telescope (HST) operations is the ability to quickly disseminate and coordinate spacecraft commanding and ground system information for both routine spacecraft operations and Space Shuttle Servicing Missions. When deviating from preplanned activities all new spacecraft commanding, ground system and space system configurations must be reviewed, authorized and executed in an efficient manner. The information describing the changes must be disseminated to and coordinated by a large group of users. In the early years of the HST mission a paper-based Operational Request System was used. The system worked, but was cumbersome to efficiently coordinate with a large geographically dispersed group of users in a timely manner. As network and server technology matured, the HST Project developed an on-line interactive Operations Request System. This Operations Request System is a server-based system (access via HST Net) that provides immediate access to command and ground system information to both local and remotely based Instrument Engineers, Flight Operations Team Controllers, Subsystem Engineers and Project Management. This paper describes the various aspects of the system's submission, review, authorization and implementation processes. Also described is the methodology used to arrive at the current system design and the Graphical User Interface (GUI). This system has been used successfully for all routine and special HST operations for the last five years. This approach to operations coordination is adaptable to spacecraft of any complexity.

Lychenheim, David E.; Pepe, Joyce; Knapp, Debra

2002-12-01

266

On line sensing of weld penetration using infrared thermography  

SciTech Connect

The objective of this research is to apply new sensing techniques, artificial intelligence, and robotics to improve the welding process through control of penetration depth and width parameters. By producing a constant depth and width of penetration through on line control, the quality and strength of welds may be improved to a new level of reliability previously unobtainable. Experimental data presented in this paper indicate that depth and width of penetration can be monitored by infrared thermography and hence controlled dynamically during the weld process. Infrared thermography is used to monitor surface temperature distributions in the vicinity of the molten metal pool. Characteristics of temperature distributions perpendicular to the direction of arc travel are analyzed and correlated with weld bead width and depth as measured by destructive examination after the weld production. The results show that there is a linear relationship between peak weld plate surface temperature and depth of penetration. Additionally, surface puddle width is found to be directly correlated to measured distance separating solidus temperatures of the molten metal as measured by infrared thermography.

Wang, Y.; Chin, B.A.

1986-01-01

267

On-line DNA analysis system with rapid thermal cycling  

DOEpatents

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

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

1999-01-01

268

On-line monitoring of methane in sewer air.  

PubMed

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

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

2014-01-01

269

On-line monitoring of methane in sewer air  

NASA Astrophysics Data System (ADS)

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.

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

2014-10-01

270

On-line DNA analysis system with rapid thermal cycling  

DOEpatents

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

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

1999-08-10

271

On-line monitoring of methane in sewer air  

PubMed Central

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

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

2014-01-01

272

On-Line Loss of Control Detection Using Wavelets  

NASA Technical Reports Server (NTRS)

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.

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

2005-01-01

273

Ion guide method for on-line isotope separation  

NASA Astrophysics Data System (ADS)

A new ISOL technique, the ion guide method for isotope separation, has been developed. The method is based on thermalization of primary recoil ions from nuclear reactions in helium and on their transfer by helium flow through a differential pumping system into the accelerating stage of an isotope separator. With this approach, separation times in the submillisecond region are achievable for all elements. The ion guide has no ionizer but instead exploits charge exchange mechanisms related to nuclear reactions and recoil thermalization processes. Operation takes place at room temperature and the simple construction involves no components that can wear out. These properties ensure smooth and stable operating conditions. The overall separation efficiencies measured for heavy nuclides produced by light-ion reactions are up to 10%. The shortest-lived activity identified in an on-line separation is the 182-?s isomeric state of 207Bi. The production rate of the mass separated 440-?s isomeric state of 43Sc is ? 2 × 10 3 ions/?C.

Ärje, J.; Äystö, J.; Taskinen, P.; Honkanen, J.; Valli, K.

1987-05-01

274

Stress Caused by On-Line Collaboration in E-Learning: A Developing Model  

ERIC Educational Resources Information Center

On-line collaboration is becoming increasingly common in education and in organisations. It was believed that this could in itself cause stress for collaborators. An analysis of on-line learning diaries, phone interviews and questionnaires indicated that on-line collaboration could cause stress, and this stress was linked to the dependency of the…

Allan, John; Lawless, Naomi

2003-01-01

275

Women Physicians Are Early Adopters of On-Line Continuing Medical Education  

ERIC Educational Resources Information Center

Introduction: On-line continuing medical education (CME) provides advantages to physicians and to medical educators. Although practicing physicians increasingly use on-line CME to meet their educational needs, the overall use of on-line CME remains limited. There are few data to describe the physicians who use this new educational medium; yet,…

Harris, John M., Jr.; Novalis-Marine, Cheryl; Harris, Robin B.

2003-01-01

276

Effects of Requiring Students to Meet High Expectation Levels within an On-Line Homework Environment  

ERIC Educational Resources Information Center

On-line homework is becoming a larger part of mathematics classrooms each year. Thus, ways to maximize the effectiveness of on-line homework for both students and teachers must be investigated. This study sought to provide one possible answer to this aim, by requiring students to achieve at least 50% for any on-line homework assignment in order to…

Weber, William J., Jr.

2010-01-01

277

75 FR 71376 - Simplified Network Application Processing System, On-Line Registration and Account Maintenance  

Federal Register 2010, 2011, 2012, 2013

...Network Application Processing System, On-Line Registration and Account Maintenance AGENCY...BIS) is proposing to implement an on-line registration process for obtaining an account...information that parties registering on-line would be required to provide to BIS...

2010-11-23

278

The 1-way on-line coupled atmospheric chemistry model system MECO(n) - Part 2: On-line coupling  

NASA Astrophysics Data System (ADS)

A new, highly flexible model system for the seamless dynamical down-scaling of meteorological and chemical processes from the global to the meso-? scale is presented. A global model and a cascade of an arbitrary number of limited-area model instances run concurrently in the same parallel environment, in which the coarser grained instances provide the boundary data for the finer grained instances. Thus, disk-space intensive and time consuming intermediate and pre-processing steps are entirely avoided and the time interpolation errors of common off-line nesting approaches are minimised. More specifically, the regional model COSMO of the German Weather Service (DWD) is nested on-line into the atmospheric general circulation model ECHAM5 within the Modular Earth Submodel System (MESSy) framework. ECHAM5 and COSMO have previously been equipped with the MESSy infrastructure, implying that the same process formulations (MESSy submodels) are available for both models. This guarantees the highest degree of achievable consistency, between both, the meteorological and chemical conditions at the domain boundaries of the nested limited-area model, and between the process formulations on all scales. The on-line nesting of the different models is established by a client-server approach with the newly developed Multi-Model-Driver (MMD), an additional component of the MESSy infrastructure. With MMD an arbitrary number of model instances can be run concurrently within the same message passing interface (MPI) environment, the respective coarser model (either global or regional) is the server for the nested finer (regional) client model, i.e., it provides the data required to calculate the initial and boundary fields to the client model. On-line nesting means that the coupled (client-server) models exchange their data via the computer memory, in contrast to the data exchange via files on disk in common off-line nesting approaches. MMD consists of a library (Fortran95 and some parts in C) which is based on the MPI standard and two new MESSy submodels, MMDSERV and MMDCLNT (both Fortran95) for the server and client models, respectively. MMDCLNT contains a further sub-submodel, INT2COSMO, for the interpolation of the coarse grid data provided by the server models (either ECHAM5/MESSy or COSMO/MESSy) to the grid of the respective client model (COSMO/MESSy). INT2COSMO is based on the off-line pre-processing tool INT2LM provided by the DWD. The new achievements allow the setup of model cascades for zooming (down-scaling) from the global scale to the lower edge of the meso-? scale (?1 km) with a very high degree of consistency between the different models and between the chemical and meteorological boundary conditions.

Kerkweg, A.; Jöckel, P.

2011-06-01

279

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

PubMed

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

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

2013-01-01

280

Low temperature thermal degradation of PCDD/Fs in soil using nanosized particles of zerovalent iron and CaO.  

PubMed

This study investigated the degradation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in contaminated soil using low temperature treatment (200-280°C) both alone and in combination with nanosized zerovalent iron (nZVI) particles or CaO. Control soil samples and soil fortified with nZVI particles or CaO were treated at 200 and 250°C in sealed glass ampoules. Treatment of the ampouled samples at 250°C was more effective than treatment at 200°C and the reduction in PCDD/F concentration was greatest when soil was treated at 250°C with nZVI addition (indeed, treatment at 200°C in the absence of nZVI resulted in increases in total PCDD and PCDD/F concentrations). In larger-scale experiments based on the obtained results, using a rotary furnace, the greatest reduction in total PCDD/F concentration was achieved by treating soil at 280°C, and adding nZVI to the soil resulted in almost no detectable PCDD/F in the gas phase. PMID:23498061

Lundin, Lisa; Moltó, Julia; Fullana, Andres

2013-05-01

281

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

NASA Astrophysics Data System (ADS)

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 .

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

2009-08-01

282

5.2 Embodied, On-line, On-board Evolution for Autonomous Robotics 367 5.2 Embodied, On-line, On-board Evolution for Autonomous  

E-print Network

5.2 Embodied, On-line, On-board Evolution for Autonomous Robotics 367 5.2 Embodied, On-line, On-board Evolution for Autonomous Robotics A.E. Eiben, Evert Haasdijk, Nicolas Bred`eche Artificial evolution plays controller. In these applications the human designers/experimenters orchestrate and manage the whole

Eiben, A.E. "Guszti"

283

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

E-print Network

UCSF Class/Course SchedulingUCSF Class/Course Scheduling On-Line Resources forOn-Line Resources for Finding Your Course'sFinding Your Course's Meeting Days/TimesMeeting Days/Times andand LocationsLocations (Room Assignments)(Room Assignments) (Effective Fall Quarter 2013) #12;UCSF Class/Course Scheduling

Klein, Ophir

284

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

SciTech Connect

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.

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

1994-02-01

285

Introducing ODL in Teacher Education--An On-Line Course on How To Create On-Line Learning Environments.  

ERIC Educational Resources Information Center

This paper describes the online course, Pedagogy in Open Learning, offered by NITOL (Norwaynet with Information Technology for Open Learning). Target groups are teachers, developers, and providers of ODL (Open and Distance Learning). The main goal is to prepare a basis for development and applications of ODL material that uses ICT (Information and…

Ask, Bodil; Haugen, Harald

286

Research on an Intelligent On-Line Negotiation System  

Microsoft Academic Search

With the rapid growth of electronic commerce, there is growing demand and great potential for online negotiation services. This paper focuses on the intelligence e-negotiation research based on Web, and applies agent technique in business negotiation. Existing Web based negotiation support systems separate the solution-driven negotiation and process-driven negotiation, this paper introduces an interactive multi-target negotiation model to solve this

Yulian Fei; Guangming Wang

2005-01-01

287

On-line, adaptive state estimator for active noise control  

NASA Technical Reports Server (NTRS)

Dynamic characteristics of airframe structures are expected to vary as aircraft flight conditions change. Accurate knowledge of the changing dynamic characteristics is crucial to enhancing the performance of the active noise control system using feedback control. This research investigates the development of an adaptive, on-line state estimator using a neural network concept to conduct active noise control. In this research, an algorithm has been developed that can be used to estimate displacement and velocity responses at any locations on the structure from a limited number of acceleration measurements and input force information. The algorithm employs band-pass filters to extract from the measurement signal the frequency contents corresponding to a desired mode. The filtered signal is then used to train a neural network which consists of a linear neuron with three weights. The structure of the neural network is designed as simple as possible to increase the sampling frequency as much as possible. The weights obtained through neural network training are then used to construct the transfer function of a mode in z-domain and to identify modal properties of each mode. By using the identified transfer function and interpolating the mode shape obtained at sensor locations, the displacement and velocity responses are estimated with reasonable accuracy at any locations on the structure. The accuracy of the response estimates depends on the number of modes incorporated in the estimates and the number of sensors employed to conduct mode shape interpolation. Computer simulation demonstrates that the algorithm is capable of adapting to the varying dynamic characteristics of structural properties. Experimental implementation of the algorithm on a DSP (digital signal processing) board for a plate structure is underway. The algorithm is expected to reach the sampling frequency range of about 10 kHz to 20 kHz which needs to be maintained for a typical active noise control application.

Lim, Tae W.

1994-01-01

288

The Eclipsing Binary On-Line Atlas (EBOLA)  

NASA Astrophysics Data System (ADS)

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/.

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

2004-05-01

289

Worldwide On-line Distance Learning University Astronomy  

NASA Astrophysics Data System (ADS)

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

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

2006-08-01

290

A Compton imaging algorithm for on-line monitoring in hadron therapy  

NASA Astrophysics Data System (ADS)

Hadron therapy, a subject of study by the ENVISION project, promises to provide enhanced accuracy in the treatment of cancer. The Bragg-peak, characteristic of the hadron-beam structure provides larger dose to the tumor while being able to spare surrounding tissue - even tissues in the beam-path, beyond the tumor-site. However, increased dose gradients require more precise treatment, as small beam misalignment can result in dose to healthy, often delicate, surrounding tissue. The requirement for accuracy necessitates imaging during therapy, yet the lack of a transmitted beam makes this difficult. The particulate beam interacts with the target material producing neutrons, positron emitting isotopes and a broad spectra of gamma radiation. Photons from positron-annihilation allow in-beam PET to provide on-line measurements of dose deposition during therapy. However, ib-PET suffers from low statistics and lost projections due to low sensitivity and detector constraints respectively. Instead, Compton imaging of gamma radiation is proposed to provide on-line monitoring for hadron therapy. Compton imaging suffers similarly from low statistics, especially, as is the case here, when incident energy is unknown. To surmount this problem, a method of Compton image reconstruction is proposed and tested using simulated data, which reconstructs incident energy along with the spatial variation in emission density. Through incident energy estimation, a larger range of measurements are available for image-reconstruction - greatly increasing the sensitivity of the system. It is shown in this preliminary study that, even with few statistics, a reasonable estimate of the beam path is calculable.

Gillam, J. E.; Lacasta, C.; Torres-Espallardo, I.; Candela Juan, C.; Llosá, G.; Solevi, P.; Barrio, J.; Rafecas, M.

2011-03-01

291

On-line Geoscience Data Resources for Today's Undergraduates  

NASA Astrophysics Data System (ADS)

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

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

2008-12-01

292

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

PubMed

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

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

2000-04-01

293

Strain induced phenomena in Ca(OH)/sub 2/ made by reaction of CaO with water vapor  

SciTech Connect

Three physically distinguishable, poorly crystalline forms of Ca(OH)/sub 2/ which are made by reactions of water vapor at 25/sup 0/C with CaO powders evolve heat and develop sharper x-ray diffraction patterns when heated to 300/sup 0/C. Measurements of x-ray diffraction peak line breadths, surface areas, porosities, and pore size distributions were made before and after heat treatment. The exothermic process of the one of these forms of Ca(OH)/sub 2/ which is nonporous is recrystallization of the highly strained solid to essentially unstrained crystals. The exothermic process in two porous forms of Ca(OH)/sub 2/, not only reduces their internal strains, but also reduces their surface areas and porosities.

Beruto, D.; Searcy, A.W.; Barco, L.; Belleri, G.

1980-01-01

294

Growth of shaped 12CaO×7Al 2O 3 crystals by the micro-pulling down method  

NASA Astrophysics Data System (ADS)

12CaO×7Al 2O 3 (C12A7) single crystals have been successfully grown by the micro-pulling down method for the first time. Single and transparent C12A7 crystal was obtained with radio-frequency heating ?-PD system. Phase stability is discussed as a function of oxygen concentration in the growth atmosphere. A minimum 1.0 Vol% O 2 with nitrogen atmosphere yields C12A7 phase. The distribution of Ca, Al and O elements at cross-section part was investigated by the electron probe microanalysis. The crystal composition deviation could be controlled by reducing O 2 gas concentration to 1.0 Vol%.

Liu, Lijuan; Kagamitani, Yuji; Ehrentraut, Dirk; Yokoyama, Chiaki; Fukuda, Tsuguo

2009-01-01

295

Mechanisms of oxygen ion diffusion in a nanoporous complex oxide 12CaO•7 Al2 O3  

NASA Astrophysics Data System (ADS)

We performed a theoretical analysis of O2- diffusion mechanisms in a nanoporous complex oxide 12CaO•7Al2O3 (C12A7). This material can be viewed as a positively charged framework, arranged in subnanometer sized cages, hosting extra-framework O2- ions occupying one in six cages. Using both classical molecular-dynamics simulations and ab initio calculations we demonstrate that the diffusion of O2- species is dominated by the exchange of framework and extra-framework O2- ions rather than by an interstitial diffusion mechanism. The results allow us to rationalize the origins of the experimentally observed high oxide ion conductivity of C12A7 and the stability of its lattice under positive ion-beam irradiation.

Sushko, Peter V.; Shluger, Alexander L.; Hayashi, Katsuro; Hirano, Masahiro; Hosono, Hideo

2006-01-01

296

High electron doping to a wide band gap semiconductor 12CaO•7Al2O3 thin film  

NASA Astrophysics Data System (ADS)

High-density electrons (˜1.9×1021cm-3) were doped into a polycrystalline film of a wide band gap (˜7eV) semiconductor 12CaO•7Al2O3 (C12A7) by an in situ postdeposition reduction treatment using an oxygen-deficient C12A7 overlayer. The resultant film exhibits metallic conduction with a Hall mobility of ˜2.5cm2V-1s-1 and a conductivity of ˜800Scm-1. Optical analyses indicate that most of the doped electrons behave as free carriers with an effective mass of 0.82me and the estimated in-grain mobility is 5.2cm2V-1s-1, which agrees reasonably with the value obtained for high-quality single crystals.

Miyakawa, Masashi; Hirano, Masahiro; Kamiya, Toshio; Hosono, Hideo

2007-04-01

297

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

SciTech Connect

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

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

2013-12-15

298

Link Prediction and Recommendation across Heterogeneous Social Networks Yuxiao Dong, Jie Tang, Sen Wu, Jilei Tian, Nitesh V. Chawla, Jinghai Rao, Huanhuan Cao  

E-print Network

the problem of inferring the types of social relationships across heterogeneous networks. However, the problemLink Prediction and Recommendation across Heterogeneous Social Networks Yuxiao Dong, Jie Tang, Sen.tian,jinghai.rao,happia.cao}@nokia.com Abstract--Link prediction and recommendation is a funda- mental problem in social network analysis. The key

Chawla, Nitesh V.

299

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

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

Cao, Jianming

300

An Analysis of Security and Privacy Issues in Smart Grid Software Architectures on Yogesh Simmhan, Alok Gautam Kumbhare, Baohua Cao, and Viktor Prasanna  

E-print Network

Simmhan, Alok Gautam Kumbhare, Baohua Cao, and Viktor Prasanna Center for Energy Informatics Computer an information-driven approach to distributed energy management. Clouds offer features well suited for Smart Grid architecture operating on different Cloud environments, in the form of a taxonomy. We use the Los Angeles Smart

Prasanna, Viktor K.

301

A Cost-Effective LSH Filter for Fast Pairwise Mining Gang Zhao, Yun Xiong, Longbing Cao, Dan Luo, Xuchun Su and Yangyong Zhu  

E-print Network

. The particularly interesting and well-studied case in data mining is Hamming space, which is related to the MarketA Cost-Effective LSH Filter for Fast Pairwise Mining Gang Zhao, Yun Xiong, Longbing Cao, Dan Luo Sydney, NSW, Australia Email: {lbcao,dluo,xsu}@it.uts.edu.au Abstract--The pairwise mining problem

Cao, Longbing

302

Long lasting blue phosphorescence and photostimulated luminescence in 12CaO?7Al2O3:Eu thin films grown by pulsed laser deposition  

NASA Astrophysics Data System (ADS)

Long lasting blue emitting Eu-doped 12CaO?7Al2O3 thin films have been prepared on quartz substrates by pulsed laser deposition combined with post-annealing. The 12CaO?7Al2O3 phase is formed after annealing the films above 900 °C in vacuum ambient. Upon 323 nm excitation, the thin films exhibit a blue long lasting emission peaked at 444 nm, assigned to the 5d-4f transitions of Eu2+. The films annealed at 950 °C have stronger luminescence and longer lasting time than that annealed at 900 °C. The phosphorescence intensity of vacuum annealed film is better than that annealed in H2/N2 atmosphere, which might be due to the increase of shallow trap numbers during the vacuum annealing process. Thermoluminescence curves demonstrate that vacuum and H2/N2 atmosphere annealing could introduce a large number of both shallow and deep traps into 12CaO?7Al2O3:Eu thin films. After UV irradiation, excellent photostimulated luminescence can be observed under 980 nm excitation. Our results suggest that 12CaO?7Al2O3:Eu phosphor may serve as a promising blue luminescent materials used in fabrication of optical storage and illumination in dark environments.

Zhu, Hancheng; Liu, Yuxue; Yan, Duanting; Bian, Hongyu; Li, Shengnan; Liu, Chunguang; Xu, Changshan; Wang, Xiaojun

2014-09-01

303

Stress caused by on-line collaboration in e-learning: a developing model  

Microsoft Academic Search

On-line collaboration is becoming increasingly common in education and in organisations. It was believed that this could in itself cause stress for collaborators. An analysis of on-line learning diaries, phone interviews and questionnaires indicated that on-line collaboration could cause stress, and this stress was linked to the dependency of the collaborators on each other, and the level of their mutual

John Allan; Naomi Lawless

2003-01-01

304

On-line Tutoring for Math Achievement Testing: A Controlled Evaluation  

Microsoft Academic Search

We report the results of a controlled evaluation of an interactive on-line tutoring system for high school math achievement test problem solving. High school students (N = 202) completed a math pre-test and were then assigned by teachers to receive interactive on-line multimedia tutoring or their regular classroom instruction. The on-line tutored students improved on the post-test, but the effect

Carole R. Beal; Rena Walles; Ivon Arroyo; Beverly P. Woolf

2007-01-01

305

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

Microsoft Academic Search

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

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

306

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

Microsoft Academic Search

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

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

2008-01-01

307

Measurement-based characterization of a collection of on-line games  

Microsoft Academic Search

On-line games are a rapidly growing Internet application. Because of the cost in supporting on-line games and the unpredictable load on servers, companies are moving toward sharing infrastructure for game hosting. To efficiently provision on-line games, it is important to understand game workloads and the behavior of game players. In this paper, we present a comprehensive analysis of a collection

Chris Chambers; Wu-chang Feng; Sambit Sahu; Debanjan Saha

2005-01-01

308

MAXIMUM LIKELIHOOD CLASSIFICATION FOR ON-LINE EVALUATION OF TRAINING BASED ON VIRTUAL REALITY  

Microsoft Academic Search

An on-line evaluator for training in simulators based on virtual reality must have a low complexity algorithm to do not compromise the performance of t he simulator. Several approaches to perform that evaluation for on-line or off-line training simulators based on virtual reality have been proposed. We propose a new approach to on-line evaluation using Maximum Likelihood for modeling and

Ronei Marcos de Moraes

309

Multiple experiences in moving from a traditional classroom setting to an on-line teaching environment  

Microsoft Academic Search

When transitioning traditional classroom courses to an on-line teaching environment, there are a variety of ways to accomplish the task. One approach is to combine classroom and on-line activities, by migrating a significant portion of the course material to an on-line environment while maintaining the remaining material in a more traditional classroom setting. This scenario requires the class to meet

Pete Hylton; Wendy Otoupal

2007-01-01

310

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

NASA Astrophysics Data System (ADS)

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.

Marsh, B. A.

2014-02-01

311

BUILDING ROBUST APPEARANCE MODELS USING ON-LINE FEATURE SELECTION  

SciTech Connect

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

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

2007-01-29

312

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

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

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

2012-10-15

313

A Systematic Review of the Mysterious Caterpillar Fungus Ophiocordyceps sinensis in Dong-ChongXiaCao ( D?ng Chóng Xià C?o) and Related Bioactive Ingredients.  

PubMed

The caterpillar fungus Ophiocordyceps sinensis (syn.Cordyceps sinensis), which was originally used in traditional Tibetan and Chinese medicine, is called either "yartsa gunbu" or "DongChongXiaCao ( D?ng Chóng Xià C?o)" ("winter worm-summer grass"), respectively. The extremely high price of DongChongXiaCao, approximately USD $20,000 to 40,000 per kg, has led to it being regarded as "soft gold" in China. The multi-fungi hypothesis has been proposed for DongChongXiaCao; however, Hirsutella sinensis is the anamorph of O. sinensis. In Chinese, the meaning of "DongChongXiaCao" is different for O. sinensis, Cordyceps spp., and Cordyceps sp. Over 30 bioactivities, such as immunomodulatory, antitumor, anti-inflammatory, and antioxidant activities, have been reported for wild DongChongXiaCao and for the mycelia and culture supernatants of O. sinensis. These bioactivities derive from over 20 bioactive ingredients, mainly extracellular polysaccharides, intracellular polysaccharides, cordycepin, adenosine, mannitol, and sterols. Other bioactive components have been found as well, including two peptides (cordymin and myriocin), melanin, lovastatin, ?-aminobutyric acid, and cordysinins. Recently, the bioactivities of O. sinensis were described, and they include antiarteriosclerosis, antidepression, and antiosteoporosis activities, photoprotection, prevention and treatment of bowel injury, promotion of endurance capacity, and learning-memory improvement. H. sinensis has the ability to accelerate leukocyte recovery, stimulate lymphocyte proliferation, antidiabetes, and improve kidney injury. Starting January 1(st), 2013, regulation will dictate that one fungus can only have one name, which will end the system of using separate names for anamorphs. The anamorph name "H. sinensis" has changed by the International Code of Nomenclature for algae, fungi, and plants to O. sinensis. PMID:24716152

Lo, Hui-Chen; Hsieh, Chienyan; Lin, Fang-Yi; Hsu, Tai-Hao

2013-01-01

314

Tracking conversational repetition: an evaluation of target monitoring ability  

Microsoft Academic Search

SUMMARY The ability to track who one tells information to (target monitoring) is evaluated in the present study. Participants shared personal information with target persons across four sessions spaced one day apart, and were instructed not to duplicate information to the same person over successive conversations. Target monitoring success was evaluated both on-line, during the information sharing sessions, and retrospectively,

Alan S. Brown; Susan Hornstein; Amina Memon

2006-01-01

315

Limits on Line Bisector Variability for Stars with Extrasolar Planets  

NASA Technical Reports Server (NTRS)

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.

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

2000-01-01

316

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

PubMed

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

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

2014-12-01

317

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

318

TETRAD: an on-line telematic surveillance system for animal transports  

Microsoft Academic Search

A new concept for on-line surveillance of animal transports is presented, comprising telemetry and wireless data communication. The concept has two major objectives: (1) to improve animal disease prevention and control and (2) to enable monitoring of animal welfare during transport. The system allows on-line collection on the transport lorry of data with respect to animal identification, body temperature and

R Geers; H. W Saatkamp; K Goossens; B Van Camp; J Gorssen; G Rombouts; P Vanthemsche

1998-01-01

319

An "Infobutton" for Enabling Patients to Interpret On-line Pap Smear Reports  

E-print Network

An "Infobutton" for Enabling Patients to Interpret On-line Pap Smear Reports David M. Baorto, MD background to understand their Pap smear reports. This information button, or "infobutton", is attached to on-line text reports describing Pap smear results present in a medical record system intended for patient

Cimino, James J.

320

BROWSER: An Automatic Indexing On-Line Text Retrieval System. Annual Progress Report.  

ERIC Educational Resources Information Center

The development and testing of the Browsing On-line With Selective Retrieval (BROWSER) text retrieval system allowing a natural language query statement and providing on-line browsing capabilities through an IBM 2260 display terminal is described. The prototype system contains data bases of 25,000 German language patent abstracts, 9,000 English…

Williams, J. H., Jr.

321

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

Microsoft Academic Search

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

Tsai-yen Li; Jean-claude Latombe

1995-01-01

322

Practical experience and results with an advanced on-line gasoline blend optimization system  

SciTech Connect

Refinery profit margins increased significantly by using the on-line gasoline blend optimization system which allows considerable savings resulting from octane give-away reduction, appreciably enhanced butane utilization, optimum use of the available blend components, and increased operating flexibility by elimination of reblends. The experience with this advanced on-line blending system is described in this paper.

Serpemen, Y.; Baumeister, K.H.; Hubel, A.; Raichel, P. (Veba Oel Entwicklungs-Gessellschaft mbH, Gelsenkirchen (DE))

1989-01-01

323

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

ERIC Educational Resources Information Center

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

Welch, Noreen O.

324

Time-Varying FOPDT Modeling and On-line Parameter Identification  

E-print Network

Time-Varying FOPDT Modeling and On-line Parameter Identification Zhenyu Yang Zhen Sun Department. Correspondingly, a set of on-line parameter identification algorithms oriented to MISO TV- FOPDT model dynamic modeling in a supermarket refrigeration system. Keywords: System identification, FOPDT, time

Yang, Zhenyu

325

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

ERIC Educational Resources Information Center

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…

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

2004-01-01

326

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

ERIC Educational Resources Information Center

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…

Canessa, Enrique; Pisani, Armando

2013-01-01

327

Using GRA Decision Making to Evaluation of On-line Games  

Microsoft Academic Search

While computer games can be categorized into many genres, this investigation assesses and classifies on-line games from Computer Gaming World (CGW) based on eight criteria: fulfillment, ability to release pressure, forming friendships, recreation, effective pedagogical approach, intellectual growth, attractiveness of interface and ease manipulation. Additionally, the preferences of players of computer on-line games are evaluated using Grey Relational analysis (GRA).

Li-Huei Chang; Che-Wei Chang; Chun-yi Liu

328

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

E-print Network

of the pursuit game and charac- terize the aspects of variants for which our on-line learning agents outperformEvolutionary On-line Learning of Cooperative Behavior with Situation-Action-Pairs J¨org Denzinger,kordt¡ @informatik.uni-kl.de Abstract We present a concept to use off-line learning approaches to achieve on

Denzinger, Jörg

329

Training peer-mentors to manage on-line class participation  

Microsoft Academic Search

Although classes in all disciplines are being offered from almost every university and college on-line, the College of Engineering at Texas Tech University, feels that first year engineering courses offered on-line need more than just technology in order to keep them engaged in course content; they need support from faculty and from peers. This paper discusses the process of training

A. Dean Fontenot; Marion O. Hagler; John R. Chandler

2001-01-01

330

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

ERIC Educational Resources Information Center

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

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

2014-01-01

331

ECM — A Novel On-line, Evolving Clustering Method and Its Applications  

Microsoft Academic Search

In this paper, an on-line, dynamic clustering method — ECM, Evolving Clustering Method, is proposed. The ECM is usually used for on-line systems, in which it performs an one-pass, maximum distance-based clustering process without any optimisation. The ECM can also be applied to off-line problems where a constrained minimisation is introduced.

Qun Song; Nikola Kasabov

2001-01-01

332

How scientists think: On-line creativity and conceptual change in  

E-print Network

Page 1 How scientists think: On-line creativity and conceptual change in science Kevin Dunbar, Mc.C: American Psychological Association Press #12;Page 2 How scientists think: On-line creativity and conceptual will present a new account of the cognitive and social mechanisms underlying complex thinking of creative

Dunbar, Kevin N.

333

EarthInquiry: Using On-Line Data to Help Students Explore Fundamental Concepts in Geoscience  

Microsoft Academic Search

Using local case studies to learn about earth processes increases the relevance of science instruction. Students are encouraged to think about how geological processes affect their lives and experiences. Today, with many global data sets available on-line, instructors have unprecedented opportunities to bring local data into the classroom. However, while the resources are available, using on-line data presents a particular

M. Alfano; C. M. Keane; R. W. Ridky

2002-01-01

334

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

Code of Federal Regulations, 2010 CFR

...Characteristic (OC) curves for on-line sampling and inspection. 42.140 Section...Characteristic (OC) curves for on-line sampling and inspection. (a) This section...Characteristic (OC) curve for each of the sampling plans given in Tables I, I-A,...

2010-01-01

335

Case Study: Collaborative Creation of an On-Line Degree Program  

ERIC Educational Resources Information Center

Faculty collaboratively developed an on-line Bachelor of Science degree in Consumer Science and Merchandising (CSM). Part-time faculty and technical support services supported the four-member team. Small grants assisted in the creation and redesign of all CSM major courses for on-line delivery. Issues of appropriate learning strategies, student…

Stewart, Barbara L.; Norwood, Marcella; Ezell, Shirley; Waight, Consuelo

2006-01-01

336

Merging Hypermedia GIS with Spatial On-Line Analytical Processing: Towards Hypermedia SOLAP  

E-print Network

(s)), Geographic Hypermedia: Concepts and Systems . accept� #12;information adheres to the way human brains thinkMerging Hypermedia GIS with Spatial On-Line Analytical Processing: Towards Hypermedia SOLAP Yvan B Systems (GIS) with those of On-Line Analytical Processing (OLAP), paving the way to a new technology

337

The Anatomy of Program Design for an On-Line Business Management Course  

ERIC Educational Resources Information Center

How does one design an on-line course to bridge theory and practice? How can the feedback of on-going stakeholder (student and administration) be incorporated into the design process to enhance quality? This paper presents the theoretical underpinning of designing an on-line management course recognized as best practice for a "well organized…

Barger, Bonita

2008-01-01

338

College Students' Choice Modeling of Taking On-Line International Business Courses  

ERIC Educational Resources Information Center

To understand students' choice behavior of taking on-line international business courses, a survey study is conducted to collect information regarding students' actual choices of taking on-line courses and potential factors that may have impacts on students' choices of online learning. Potential factors such as enrollment status, demographic…

Yeh, Robert S.

2006-01-01

339

Private State in Public Media Subjectivity in French Traditional and On-line News  

E-print Network

Politics Politics Society Society Culture Culture Culture Media Media Religion Bizarre Life and StylePrivate State in Public Media Subjectivity in French Traditional and On-line News Anne K and two forms of alternative on-line media with respect to the expression of authorial stance. Our

Paris-Sud XI, Université de

340

Brand advertising, on-line audiences, and social media: invited talk  

Microsoft Academic Search

This talk will discuss the issues and techniques at the intersection of data science, advertising technology, and the business of brand advertising on-line. For better or worse, on-line advertising has been viewed by many advertisers as a direct marketing channel, with sponsored search advertising being the shining star. However, a very large proportion of advertising budgets is dedicated to brand

Foster J. Provost

2009-01-01

341

On-line optimization of a crude unit heat exchanger Statoil Mongstad  

E-print Network

On-line optimization of a crude unit heat exchanger network Tore Lid #3; Statoil Mongstad N-5954 modeling and on-line optimization of a crude unit heat exchanger network at the Statoil Mongstad re#12;nery oil in the heat exchanger network. The steady state mass and energy balance of the 20 heat exchangers

Skogestad, Sigurd

342

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

Microsoft Academic Search

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

Giacomo Bucci; Giovanni Pezzi; Mario Salmon

1984-01-01

343

Use of an automated on-line SPE-HPLC method to monitor caffeine and selected aniline and phenol compounds in aquatic systems of Macedonia-Thrace, Greece  

Microsoft Academic Search

Caffeine and selected aniline and phenol compounds have been monitored in the river, lake, and ground water of Northern Greece (Macedonia-Thrace) from September 1999 to December 2000 by means of a fully automated on-line SPE-HPLC method. Among the target aniline and phenol compounds the most abundant was 2,6-di-tert-butyl-4-methylphenol, which was found to be present in both surface and ground water

E. Papadopoulou-Mourkidou; J. Patsias; E. Papadakis; A. Koukourikou

2001-01-01

344

Portal imaging for evaluation of daily on-line setup errors and off-line organ motion during conformal irradiation of carcinoma of the prostate  

Microsoft Academic Search

Purpose: To use portal imaging to measure daily on-line setup error and off-line prostatic motion in patients treated with conformal radiotherapy to determine an optimum planning target volume (PTV) margin incorporating both setup error and organ motion.Results: A total of 2549 portal images from 33 patients were acquired over the course of the study. Of these patients, 23 were analyzed

Hamideh Alasti; M. Peter Petric; Charles N Catton; Padraig R Warde

2001-01-01

345

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

SciTech Connect

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

Rodman, J.A.

1993-08-01

346

Intelligent identification of wear mechanism via on-line ferrograph images  

NASA Astrophysics Data System (ADS)

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

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

2014-03-01

347

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

PubMed

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

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

2014-01-01

348

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

PubMed

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

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

2002-01-01

349

Sputter target  

DOEpatents

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

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

1980-01-01

350

Thermodynamics and kinetics of hydroxide ion formation in 12 CaO x 7 Al2O3.  

PubMed

We have examined the thermodynamics and kinetics of hydroxide (OH-) ions that formed in cages of 12 CaO x 7 Al2O3 (C12A7) with nanoporous structures. It is confirmed using thermogravimetric-evolved gas analyses (TG-EGA) that hydration in C12A7 is mediated by a reaction between an oxide (O2-) ion in the cage and an H2O molecule in the atmosphere to form two OH- ions in the cages. To simply and exactly quantify the OH- content from infrared absorption measurements of OH-stretching band, we propose a method combined with a thermodynamic analysis, allowing the simultaneous determination of the molar extinction coefficient of the OH-band, enthalpy, and entropy for the hydration. Hydration enthalpy in C12A7 is extremely high compared with other oxides and was enhanced by the marked instability of O2- ion in the cage. Consequently, high solubility of OH- ion is retained up to unusually high temperatures. Furthermore, we determined diffusion coefficients of species relevant to the hydration process and demonstrated that inward diffusion of OH- ions is the rate-determining process. PMID:16852465

Hayashi, Katsuro; Hirano, Masahiro; Hosono, Hideo

2005-06-23

351

Strong enhancement of superconductivity in inorganic electride 12CaO·7Al2O3:e- under high pressure  

NASA Astrophysics Data System (ADS)

We present the results of the pressure dependence of the superconductivity of the inorganic electride 12CaO·7Al2O3:e- (C12A7:e-) single crystal through the ac-susceptibility measurement under high pressure. C12A7:e- has the cage structure and the density of states derived from the cages may play an important role in the superconductivity. The superconducting transition temperature ( T c) is ˜ 0.2 K at ambient pressure and monotonically increases up to 1.79 K at 4.7 GPa. The upper critical field H c2 and - dH c2/ dT at T c, in proportion to the density of states (DOS) at Fermi energy becomes larger under high pressure. The superconductivity in C12A7:e- is mediated by the electron-phonon interaction, and the increase of Tc with pressure may arise from a peak structure of the DOS of cage conduction band.

Tanaka, Shigeki; Kato, Tomoki; Miyake, Atsushi; Kagayama, Tomoko; Shimizu, Katsuya; Kim, Sung Wng; Matsuishi, Satoru; Hosono, Hideo

2013-08-01

352

From insulator to electride: a theoretical model of nanoporous oxide 12CaO.7Al2O3.  

PubMed

Recently, a novel inorganic electride stable at room temperatures has been obtained by reducing a complex nanoporous oxide 12CaO.7Al2O3 (C12A7) in a Ca atmosphere (Matsuishi, S.; Toda, Y.; Miyakawa, M.; Hayashi, K.; Kamiya, T.; Hirano, M.; Tanaka, I.; Hosono, H. Science 2003, 301, 626). In this system, up to 2.3 x 1021/cm3 electrons can be accommodated in a three-dimensional network of cages formed by a positively charged oxide framework. We demonstrate theoretically that at all concentrations, ne, the electrons are neither associated with specific atoms nor fully delocalized. At low ne, the electrons are isolated from each other and resemble the color centers in insulating materials. They are well localized in some of the lattice cages and yield strong inhomogeneous lattice distortions that provide polaron-type cage-to-cage electron hopping. As ne increases, the electrons form a denser electron gas and become more evenly spread over all available lattice cages. At sufficiently high ne, the system becomes metallic but still retains partially localized character of the conducting electrons. We describe the nature of the electronic states at the Fermi level and predict the changes in the optical and magnetic properties of this system as a function of ne. PMID:17243831

Sushko, Peter V; Shluger, Alexander L; Hirano, Masahiro; Hosono, Hideo

2007-01-31

353

Characterization and optical transition in tb-doped 12CaO x 7Al2O3 powders.  

PubMed

Tb-doped 12CaO x 7Al2O3 (C12A7:Tb3+) powders with strong green emission were prepared using the sol-gel method. X-ray diffraction, micro-Raman spectra, scanning electron microscopy and absorption spectra showed that C12A7:Tb3+ powders with grain size of 200-300 nm were synthesized. Porous powders could be formed as the concentration of Tb3+ was 5 at%. The absorption band around 209 nm was attributed to the host lattice absorption, and the bands around 255 nm and 274 nm were related to the 4f-5d transitions of Tb3+. The absorption intensity of the visible region was enhanced due to the presence of one 100 nm-diameter hole in every grain of C12A7:Tb3+ powders. The emission spectra showed noticeable influence of Tb-Tb cross relaxation, which favored the green photoluminescence (PL) over the blue PL. The study on the concentration quenching indicated that the energy transfers depopulating the 5D3 and 5D4 levels were assigned to the mechanisms of electric dipole-dipole and exchange interaction, respectively. PMID:20355639

Xue, L L; Liu, Y X; Xu, C S; Liu, Y C; Zhao, C J; Zhang, X T

2010-03-01

354

Features and mechanism of H- anion emission from 12 CaO x 7 Al2O3 surface.  

PubMed

The hydrogen anion (H-) and other anionic species (O-, OH-, e-) in the gas phase, emitted from the synthesized crystal surface of 12 CaO x 7 Al2O3-H- (C12A7-H-), have been observed. The emission intensity of all the anionic species strongly depends on the sample surface temperature and the extraction field. H- has the highest emission branch ratio, and the extraction field can reduce its apparent activation energy. H- emission current at a microA/cm2-level has been achieved, which is about 4 orders of magnitude higher than that obtained from the thermal desorption process of CaH2. The observed anions of H- and OH- are attributed to their migration from the C12A7-H- cages onto the surface [i.e., Y-(cages) --> Y-(surface) --> Y-(gas phase) (Y = H, OH)]. The weak O- and electron emission would both arise from the dissociation of O2-: O2-(surface) --> O-(surface) + e-(surface) --> O-(gas phase) + e-(space). PMID:16852484

Huang, Fan; Li, Jiang; Wang, Lian; Dong, Ting; Tu, Jing; Torimoto, Yoshifumi; Sadakata, Masayoshi; Li, Quanxin

2005-06-23

355

Photoluminescence of Au - formed in 12CaO · 7Al 2O 3 single crystal by Au +-implantation  

NASA Astrophysics Data System (ADS)

Au + ion implantation with fluences from 1 × 10 14 to 3 × 10 16 cm -2 into 12CaO · 7Al 2O 3 (C12A7) single crystals was carried out at a sample temperature of 600 °C. The implanted sample with the fluence of 1 × 10 15 cm -2 exhibited photoluminescence (PL) bands peaking at ˜3.1 and ˜2.3 eV at ?150 K when excited by He-Cd laser (325 nm). This was the first observation of PL from C12A7. These two PL bands are possibly due to intra-ionic transitions of an Au - ion having the electronic configuration of 6 s2, judged from their similarities to those reported on Au - ions in alkali halides. However, when the concentration of the implanted Au ions exceeded the theoretical maximum value of anions encaged in C12A7 (˜2.3 × 10 21 cm -3), surface plasmon absorption appeared in the optical absorption spectrum, suggesting Au colloids were formed at such high fluences. These observations indicate that negative gold ions are formed in the cages of C12A7 by the Au + implantation if an appropriate fluence is chosen.

Miyakawa, M.; Kamioka, H.; Hirano, M.; Kamiya, T.; Hosono, H.

2006-09-01

356

Preparation and visible emission of Er-doped 12CaO x 7Al2O3 powder.  

PubMed

Er(3+)-doped 12CaO x 7Al2O3 (C12A7:Er3+) powders were prepared using the sol-gel method. X-ray diffraction, micro-Raman spectra and absorption spectra showed that C12A7:Er3+ powder had been obtained. Sharp and intense Er(3+)-related emission from C12A7:Er3+ powder with different Er3+ concentrations in the visible region at room temperature was investigated by analyzing the local structure of Ca atoms in C12A7, and it revealed that cation sites with low symmetry of the host were beneficial to the photoluminescence of Er3+ ions. The emission lines were attributed to two types of Er3+ centers, isolated Er3+ ions and complex centers formed by aggregation of Er3+ ions. The PL intensity might be affected by free oxygen species relative to Er3+ ions formed by charge compensation. The inverse temperature dependent luminescence from the upper level of 2H11/2 state and that from the lower level of 4S3/2 state implied that the thermalization or thermal equilibrium of electrons between the two closely emission states occurred. PMID:18468174

Wang, D; Liu, Y X; Liu, Y C; Xu, C S; Shao, C L; Li, X H

2008-03-01

357

Photoluminescence from Au ion-implanted nanoporous single-crystal 12CaO•7Al2O3  

NASA Astrophysics Data System (ADS)

Implantation of Au+ ions into a single crystalline 12CaO•7Al2O3 (C12A7) was performed at high temperatures with fluences from 1×1014 to 3×1016cm-2 . This material is composed of positively charged sub-nanometer-sized cages compensated by extra-framework negatively charged species. The depth profile of concentrations of Au species was analyzed using Rutherford backscattering spectrometry. The measured optical spectra and ab initio embedded cluster calculations show that the implanted Au species are stabilized in the form of negative Au- ions below the fluences of ˜1×1016cm-2 (Au volume concentration of ˜2×1021cm-3 ). These ions are trapped in the cages and exhibit photoluminescence (PL) bands peaking at 3.05 and 2.34eV at temperatures below 150K . At fluences exceeding ˜3×1016cm-2 , the implanted Au atoms form nano-sized clusters. This is manifested in quenching of the PL bands and creation of an optical absorption band at 2.43eV due to the surface plasmon of free carriers in the cluster. The PL bands are attributed to the charge transfer transitions (Au0+e-?Au-) due to recombination of photo-excited electrons (e-) , transiently transferred by ultraviolet excitation into a nearby cages, with Au0 atoms.

Miyakawa, Masashi; Kamioka, Hayato; Hirano, Masahiro; Kamiya, Toshio; Sushko, Peter V.; Shluger, Alexander L.; Matsunami, Noriaki; Hosono, Hideo

2006-05-01

358

Characterization and luminescence of Eu3+ ions doped 12CaO 7Al2O3 nanopowders.  

PubMed

Eu3+ ions doped 12CaO 7Al2O3 (C12A7) powders with different Eu3+ concentrations were prepared by sol-gel combined with solid state reaction method. The results of XRD and Raman spectra showed that single cubic phase polycrystalline C12A7:Eu3+ powders were prepared. The absorption peaks attributed to f-f transition of Eu3+ ion can be observed, indicating that Eu3+ had been incorporated into C12A7 lattice site. Visible PL peaks around 578, 588, 614 nm were ascribed to 5D0 --> 7FJ (J = 0, 1, 2) transitions of Eu3+ under the excitation of 488 nm line. The PL of C12A7:Eu3+ showed the strongest emission intensity at Eu3+ concentration of 0.5 at%. Two different types of Eu3+ centers were identified by the two lines from 5D0 --> 7F0 transition emission. The doping mechanism of C12A7:Eu3+ might be attributed to Eu3+ ions substitution for two types of Ca2+ lattice sites in C12A7. The temperature dependent PL spectra of Eu-doped C12A7 were measured in the range from 100 to 300 K under the excitation of 488 nm laser line. The PL intensities as a function of temperature were well fitted by using a unified theoretical model, considering thermal activation and nonradiative energy transfer processes. PMID:22413328

Liu, C G; Liu, Y X; Wang, D; Yan, D T; Xu, C S

2011-11-01

359

Spectroscopic characterization of a multiband complex oxide: Insulating and conducting cement 12CaO·7Al2O3  

NASA Astrophysics Data System (ADS)

Natural 12CaO·7Al2O3 (C12A7) is a wide band gap insulator, but conductivity can be realized by introducing oxygen deficiency. Currently, there are two competing models explaining conductivity in oxygen-deficient C12A7, one involving the electron transfer via a “cage conduction band” inside the nominal band gap, the other involving electron hopping along framework lattice sites. To help resolve this debate, we probe insulating and conducting C12A7 with x-ray emission, x-ray absorption, and x-ray photoemission spectroscopy, which provide a full picture of both the valence and conduction band edges in these materials. These measurements suggest the existence of a narrow conduction band between the main conduction and valence bands common in both conducting and insulating C12A7 and support the theory that free electrons in oxygen-deficient C12A7 occupy the low-energy states of this narrow band. Our measurements are corroborated with density functional theory calculations.

McLeod, J. A.; Buling, A.; Kurmaev, E. Z.; Sushko, P. V.; Neumann, M.; Finkelstein, L. D.; Kim, S.-W.; Hosono, H.; Moewes, A.

2012-01-01

360

Insulator -- polaron conductor -- metal transitions in a complex oxide 12CaO.7Al2O3.  

NASA Astrophysics Data System (ADS)

Recent experiments have demonstrated that a complex nano-porous oxide 12CaO.7Al2O3 (C12A7) built of positively charged sub-nanometer cages can be converted from a transparent insulator to a transparent conductor by H2 doping followed by UV-light irradiation with 4--4.5 eV photons [1]. This irradiation induces optical absorption bands with maxima at 0.4 eV and 2.8 eV and high concentrations of unpaired electrons. We use ab initio calculations to reveal the mechanism of photo-induced insulator--conductor transition and the role of H atoms in this process and to elucidate the transport properties of the electrons in this system as a function of electron concentration. Our theoretical modeling suggests that at concentration below 10^20 cm-3 electrons are responsible for the polaron type electrical conductivity with the activation energy close to 0.1 eV as well as for the optical absorption at 0.4 eV and 2.8 eV [2]. We demonstrate that, as the electron concentration exceeds 10^20 cm-3, the character of electronic conductivity changes from polaron type to metallic. [1] K. Hayashi et al., Nature 419, 462 (2002). [2] P.V. Sushko, et al., Phys. Rev. Lett. 91, 126401 (2003); P.V. Sushko et al., Appl. Phys. Lett. 86, 092101 (2005).

Sushko, P.; Shluger, A.; Stoneham, A.; Hayashi, K.; Matsuishi, S.; Hirano, M.; Hosono, H.

2006-03-01

361

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

NASA Astrophysics Data System (ADS)

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

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

2014-09-01

362

Preparation of CaO as OLED getter material through control of crystal growth of CaCO{sub 3} by block copolymers in aqueous solution  

SciTech Connect

As the starting materials of organic light-emitting diode (OLED) getter, calcium carbonate (CaCO{sub 3}) particles with various shapes and crystal structures have been successfully prepared with additives (L64 or PEGPG), which contain blocks of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO). These CaCO{sub 3} particles were calcinated into highly crystalline calcium oxide (CaO) nanoparticles with high capacity of water adsorption up to 14.23 wt.%. The CaCO{sub 3} and CaO particles prepared at various conditions were characterized using the field emission scanning electron microscopy (FE-SEM), Fourier transform infrared microscopy (FT-IR), X-ray powder diffraction (XRD), and dynamic vapor sorption (DVS) method.

Park, Jae-Hyung [Department of Chemical Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Oh, Seong-Geun [Department of Chemical Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of)], E-mail: seongoh@hanyang.ac.kr

2009-01-08

363

Role of Y{sub 2}O{sub 3}, CaO, MgO additives on structural and microstructural behavior of zirconia/mullite aggregates  

SciTech Connect

Zirconia mullite (MUZ), Y{sub 2}O{sub 3}-MUZ, CaO-MUZ and MgO-MUZ composites, synthesized through plasma fusion technique, are becoming important due to their commercial scale of production within five minutes of plasma treatment from sillimanite, zircon and alumina mixture. The X-ray diffraction studies reveal the monoclinic zirconia phase in MUZ composite whereas mixed monoclinic, tetragonal and cubic phases of zirconia have been observed in Y{sub 2}O{sub 3}, CaO, MgO added MUZ composites. The Y{sub 2}O{sub 3}, CaO and MgO additives act as sintering aids to favour the transformation and stabilisation of tetragonal and cubic zirconia phases at room temperature. These additives also play a key role in the development of various forms of microstructure to achieve dense MUZ composites.

Mishra, D. K.; Prusty, Sasmita; Mohapatra, B. K.; Singh, S. K.; Behera, S. N. [Advanced Materials Technology Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, Odisha (India); Geological Survey of India, Alandi Road, Pune 411 006, Maharashtra (India); Mineralogy Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, Odisha (India); Advanced Materials Technology Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, Odisha (India); National Institute of Science and Technology (NIST), Berhampur 761 008, Odisha (India)

2012-07-23

364

Antibacterial and bioactive silver-containing Na2O x CaO x 2SiO2 glass prepared by sol-gel method.  

PubMed

The antibacterial effect of addition of silver oxide to Na2O x CaO x 2SiO2 glass have been studied. Silver containing and silver free Na2O x CaO x 2SiO2 glasses have been prepared by sol-gel synthesis using tetramethil orthosilicate, sodium ethoxide, calcium nitrate tetrahydrate and silver nitrate as starting materials and methyl ethyl ketone as solvent. The gel was examined by differential thermal analysis, thermo gravimetric analysis, FTIR spectroscopy and X-ray diffraction analysis. Antibacterial and bioactive tests on gel glass powders, obtained after a heat treatment of 2 h at 600 degrees C of the dried gel, were carried out. High antimicrobial effects of samples against Escherichia coli and Streptococcus mutans were found. FTIR measurements and SEM micrographs have ascertained the formation of a hydroxyapatite layer on the surface of samples soaked in a simulated body fluid for different times. PMID:15387420

Catauro, M; Raucci, M G; De Gaetano, F; Marotta, A

2004-07-01

365

Role of Y2O3, CaO, MgO additives on structural and microstructural behavior of zirconia/mullite aggregates  

NASA Astrophysics Data System (ADS)

Zirconia mullite (MUZ), Y2O3-MUZ, CaO-MUZ and MgO-MUZ composites, synthesized through plasma fusion technique, are becoming important due to their commercial scale of production within five minutes of plasma treatment from sillimanite, zircon and alumina mixture. The X-ray diffraction studies reveal the monoclinic zirconia phase in MUZ composite whereas mixed monoclinic, tetragonal and cubic phases of zirconia have been observed in Y2O3, CaO, MgO added MUZ composites. The Y2O3, CaO and MgO additives act as sintering aids to favour the transformation and stabilisation of tetragonal and cubic zirconia phases at room temperature. These additives also play a key role in the development of various forms of microstructure to achieve dense MUZ composites.

Mishra, D. K.; Prusty, Sasmita; Mohapatra, B. K.; Singh, S. K.; Behera, S. N.

2012-07-01

366

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

NASA Astrophysics Data System (ADS)

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.

Stratta, G.; Capalbi, M.; Perri, M.; Giommi, P.

2010-10-01

367

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

NASA Astrophysics Data System (ADS)

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

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

2013-04-01

368

Selective N 2 O Removal from the Process Gas of Nitric Acid Plants Over Ceramic 12CaO · 7Al 2 O 3 Catalyst  

Microsoft Academic Search

Catalytic high temperature decomposition (secondary abatement) of nitrous oxide over calcium aluminate 12CaO · 7Al2O3 (mayenite) was studied in the model laboratory tests (TPSR) and pilot units (steady-state) using the real feed. X-ray diffraction\\u000a (XRD), scanning electron microscopy (SEM), N2-sorption (BET), electron paramagnetic resonance (EPR) and Raman spectroscopies were used to characterize the synthesized\\u000a material. The catalyst exhibited high efficiency and selectivity

Monika Ruszak; Marek Inger; Stefan Witkowski; Marcin Wilk; Andrzej Kotarba; Zbigniew Sojka

2008-01-01

369

Heat requirements in a calciner of CaCO 3 integrated in a CO 2 capture system using CaO  

Microsoft Academic Search

Several systems for CO2 capture using CaO as regenerable sorbent are under development. In addition to a carbonation step, they all need a regeneration step (calcination of CaCO3) to produce a concentrated stream of CO2. Different options for calcination may be possible, but they all share common operating windows that appear when the mass and heat balances in the system

N. Rodriguez; M. Alonso; G. Grasa; J. Carlos Abanades

2008-01-01

370

An Electro-Deposited IrOx Thin Film pH Sensor C. M. Nguyen, H. Cao, W. D. Huang, and J.-C. Chiao  

E-print Network

pH levels with indicators such as neutral red or umbelliferone are limited for in-situ experiments solutions with different pH levels of 2, 4, 7, 10 were used to test the performance. A unit-gain bufferAn Electro-Deposited IrOx Thin Film pH Sensor C. M. Nguyen, H. Cao, W. D. Huang, and J.-C. Chiao

Chiao, Jung-Chih

371

Neutrons from the SNS's target are channeled  

E-print Network

are the Spallation Neutrons and Pressure Diffractometer, or SNAP; the Fine- Resolution Fermi Chopper SpectrometerNeutrons from the SNS's target are channeled through beamlines to the instruments' detectors, which's unprecedentedly intense neutron beams. For example, one of the first on line -- SEQUOIA -- has provided new

Pennycook, Steve

372

ISAC targets  

NASA Astrophysics Data System (ADS)

The TRIUMF-ISAC radioactive ion beam facility was designed and constructed to allow irradiation of thick targets with up to 100 A proton beam intensities. Since beginning operation in 1998, beam intensities on ISAC targets have progressively increased toward the 100 A design limit. Routine operation with p + intensities up to 75 A is currently possible for both refractory metal target materials and for composite metal carbide materials; full 99 A p + intensity has been achieved for Nb foil target material. Consideration must be given to the beam power deposition, the power dissipation and the limiting temperature criteria of each target material. Increased beam power dissipation has been achieved by modifying target materials and target containers. Increasing irradiation currents have produced benefits, drawbacks and unexpected results for ISOL operations.

Dombsky, M.; Kunz, P.

2014-01-01

373

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

SciTech Connect

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.

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

1980-01-01

374

On-line coupling of solid-phase extraction to liquid chromatography--a review.  

PubMed

Solid-phase extraction (SPE) is an effective sample preparation method for removal of interfering compound and enrichment of analyte. Liquid chromatography (LC) with various detectors is a main separation and detection technique used in the analytical field. This article reviews the literatures about the on-line coupling of SPE with LC. The advantages of on-line coupling are reduction of analysis time, sample contamination, and analyte losses, as well as improvement of precision and accuracy. The SPE sorbents including traditional materials, such as chemically bonded silica, ion-exchange and carbon-based materials, and some novel sorbents, such as restricted access material, molecularly imprinted polymer, immunosorbent, and monolithic material, used in the on-line analysis are discussed in detail. The on-line coupling of SPE-LC to other sample preparation techniques, such as supercritical fluid extraction, subcritical water extraction, microwave-assisted extraction, ultrasound-assisted extraction, and derivatization technique are also reviewed. PMID:19772737

Chen, Ligang; Wang, Hui; Zeng, Qinglei; Xu, Yang; Sun, Lei; Xu, Haoyan; Ding, Lan

2009-09-01

375

On-line Vibration Diagnostics of the Optical Elements at BL-28 of the Photon Factory  

SciTech Connect

We have analyzed the data of encoders attached to optical elements and developed an on-line vibration diagnostics system of the monochromator. After eliminating the vibration source we have been able to improve the performance of the monochromator.

Maruyama, T.; Kashiwagi, T. [TOYAMA Co., Ltd., 4-13-16 Hibarigaoka, Zama-shi, Kanagawa 228-0003 (Japan); Kikuchi, T.; Toyoshima, A.; Kubota, M.; Ono, K. [KEK-PF, 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan)

2007-01-19

376

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

E-print Network

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 ...

Huang, Enyang

2010-01-01

377

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

...OC) curves for on-line sampling and inspection. 42.140 Section 42.140 Agriculture Regulations of the Department of...FOR CONDITION OF FOOD CONTAINERS Miscellaneous § 42.140 Operating Characteristic (OC) curves for...

2014-01-01

378

On the on-line stabilization of visibility of interference in fiber optic quantum cryptography  

NASA Astrophysics Data System (ADS)

A method for the stabilization of the visibility of interference in fiber optic quantum cryptography has been proposed. This method allows "on-line" balancing of spatially separated interferometers without interruption of key distribution.

Kulik, S. P.; Molotkov, S. N.

2014-08-01

379

Probabilistic on-line transportation problems with carrying-capacity constraints  

E-print Network

This thesis presents new insights and techniques for the analysis and design of autonomous or technology-assisted ("intelligent") transportation systems. The focus is on cooperative, on-line planning and control, of a fleet ...

Treleaven, Kyle (Kyle Ballantyne)

2014-01-01

380

On-line Hydraulic State Estimation in Urban Water Networks Using Reduced Models  

E-print Network

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) ...

Preis, Ami

381

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

E-print Network

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...

Abdul, Anis Mohamed

2012-06-07

382

A comparison of the chemical composition and bioactive ingredients of the Chinese medicinal mushroom DongChongXiaCao, its counterfeit and mimic, and fermented mycelium of Cordyceps sinensis  

Microsoft Academic Search

The Chinese herbal drug DongChongXiaCao, a medicinal and edible mushroom originating from the fungus Cordyceps sp., has been developed into health foods. Counterfeit and mimic types are frequently found in markets. Mycelial preparations of Cordyceps sinensis, via submerged fermentation, have been commercialized and also named DongChongXiaCao. This investigation endeavours to characterize the proximate composition, amino acid profiles, and contents of

Tai-Hao Hsu; Li-Hua Shiao; Chienyan Hsieh; Der-Ming Chang

2002-01-01

383

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

Microsoft Academic Search

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

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

2007-01-01

384

On-Line Case-Based Plan Adaptation for Real-Time Strategy Games  

Microsoft Academic Search

Traditional artificial intelligence techniques do not per- form well in applications such as real-time strategy games because of the extensive search spaces which need to be explored. In addition, this exploration must be carried out on-line during performance time; it can- not be precomputed. We have developed on-line case- based planning techniques that are effective in such do- mains. In

Neha Sugandh; Santiago Ontañón; Ashwin Ram

2008-01-01

385

An approach to situational market segmentation on on-line newspapers based on current tasks  

Microsoft Academic Search

We discuss how a task-based situational market segmentation may be applied to on-line newspapers, distinguishing between fact finding, information gathering and browsing. During a period of four weeks we had 41 users keep a diary and recorded their surfing behavior on different on-line newspapers. The results of a Naive Bayes classification with feature selection indicate that content-related attributes such as

Anne Gutschmidt

2010-01-01

386

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

387

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

E-print Network

where learning is fostered and supported” (Khan, 1997, p.6). Organization of the chapters This thesis consists of five chapters. Beginning with an overview of the context of the study, chapter I includes the statement of the research problem... of on-line instruction With the accessibility of the Internet, the utilization of on-line teaching and learning has received wide attention from scholars to examine the benefits for students and instructors (Bartolic-Zlomilic & Bates, 1999; Khan, 1997...

Yang, Xinyuan

2012-10-19

388

Long term on-line speaker adaptation for large vocabulary dictation  

Microsoft Academic Search

On-line speaker adaptation is desirable for speech recognitiondictation applications, because it o#ers the possibilitytoimprove the system with the speaker-speci#c data obtainedfrom the user. Since the user will work with such a deviceover a long period, for a dictation system the long termspeed. In contrast to speaker-dependent re-training,the speaker-speci#c speech data does not need to be storedfor on-line speaker adaptation and

Eric Thelen; Forschungslaboratorien Aachen

1996-01-01

389

Multi-Layer Corrective Cascade Architecture for on-Line Predictive Echo State Networks  

Microsoft Academic Search

An architecture for on-line learning of time series prediction is presented which uses a series of echo state networks (ESNs). Each ESN learns to predict an error correction term for the previous ESN. This technique is demonstrated to improve prediction accuracy for on-line learning of the Mackey-Glass chaotic oscillator. The results are compared to other architectural configurations to show that

Russell Y. Webb

2008-01-01

390

Traffic Management and Network Control Using Collaborative On-line Simulation  

Microsoft Academic Search

The complexity and dynamics of the Internet is driving the demand for scalable and effective network control. This paper proposes a collaborative on-line simulation architecture to provide pro-active and automated control functions for networks. The general model includes au- tonomous on-line simulators which continuously monitor\\/model the net- work conditions and execute a search in the parameter state space for better

Tao Ye; David Harrison; Bin Mo; Shivkumar Kalyanaraman; Boleslaw Szymanski; Ken Vastola; Biplab Sikdar; Hema Tahilramani Kaur

2001-01-01

391

Status of The EPRI\\/Utility On-Line Monitoring Working Group  

Microsoft Academic Search

This report focused on thegeneric application of on-line monitoringtechniques to be used as a tool for assessinginstrument performance. It proposed to relax thefrequency of instrument calibrations required bythe U.S. nuclear power plant TechnicalSpecifications (TS) from once every fuel cycle toonce in a maximum of 8 years based on the onlinemonitoring results. This paper presents thestatus of implementing On-Line Monitoring inU.S.

J. Wesley Hines; Eddie Davis

392

Greedy Algorithms for the On-Line Steiner Tree and Generalized Steiner Problems  

Microsoft Academic Search

We study the on-line Steiner tree problem on a general metric space. We show that a class of greedy on-line algorithms are O(log(d\\/zs))-competitive and no deterministic algorithm is better than ?(log(d\\/zs))-competitive, where s is the number of regular nodes, d the maximum metric distance between any two revealed nodes and z the optimal off-line cost. Our results refine the previous

Jeffery Westbrook; Dicky C. K. Yan

1993-01-01

393

Cost-effective on-line partial discharge of measurements for cables  

Microsoft Academic Search

On-line partial discharge (PD) measurements are an efficient method for detecting certain insulation defects of cables. These include defects in cable joints and terminations, and defects due to mechanical impact. Noninvasive, efficient, and widely applicable, portable on-line PD measurement techniques are strongly favored by the electricity industry. Three on-site PD measurements for cables are described in this article to illustrate

Yafei Zhou; Yang Qin; P. Chappell

2006-01-01

394

On-Line Algorithms, Real Time, the Virtue of Laziness, and the Power of Clairvoyance  

Microsoft Academic Search

\\u000a In several practical circumstances we have to solve a problem whose instance is not a priori completely known. Situations\\u000a of this kind occur in computer systems and networks management, in financial decision making, in robotics etc. Problems that\\u000a have to be solved without a complete knowledge of the instance are called on???line\\u000a problems. The analysis of properties of on-line problems

Giorgio Ausiello; Luca Allulli; Vincenzo Bonifaci; Luigi Laura

2006-01-01

395

LIVE TRACKING OF MUSICAL PERFORMANCES USING ON-LINE TIME WARPING  

Microsoft Academic Search

Dynamic time warping finds the optimal alignment of two time series, but it is not suitable for on-line applications because it re- quires complete knowledge of both series before the alignment can be computed. Further, the quadratic time and space requirements are limiting factors even for off-line systems. We present a novel on-line time warping algorithm which has linear time

Simon Dixon

2005-01-01

396

On-line optical flow feedback for mobile robot localization/navigation  

E-print Network

ON-LINE OPTICAL FLOW FEEDBACK FOR MOBILE ROBOT LOCALIZATION/NAVIGATION A Thesis by DAVID KRISTIN SORENSEN 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 2003 Major Subject: Mechanical Engineering ON-LINE OPTICAL FLOW FEEDBACK FOR MOBILE ROBOT LOCALIZATION/NAVIGATION A Thesis by DAVID KRISTIN SORENSEN Submitted to Texas A&M University in partial fulfillment...

Sorensen, David Kristin

2004-09-30

397

On-Line Bookstore System Based on JSP and JavaBean  

Microsoft Academic Search

This system is a small electronic commerce system- On-line bookstore system based on JSP and JavaBean, has self-contained onstage and background processing function, can make readers register and login, query and scan booklist, order and modify order form, view and issue message and so on, may provide convenient on-line shopping environment for the user, conforms to domestic popular electronic commerce

Bei Ru; Xueyong Li; Lei Zhang

2010-01-01

398

A decision-theoretic generalization of on-line learning and an application to boosting  

Microsoft Academic Search

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

Yoav Freund; Robert E. Schapire

1995-01-01

399

Effect of on-line conductivity plasma ultrafiltrate kinetic modeling on cardiovascular stability of hemodialysis patients  

Microsoft Academic Search

Effect of on-line conductivity plasma ultrafiltrate kinetic modeling on cardiovascular stability of hemodialysis patients. The aim of this multicenter, prospective, randomized cross-over study was to clarify whether on-line conductivity ultrafiltrate kinetic modeling (treatment B), as a substitute for sodium kinetic modeling, is capable of reducing intradialytic cardiovascular instability in comparison with standard treatment (treatment A), by reducing the sodium balance

Francesco Locatelli; Simeone Andrulli; Salvatore Di Filippo; Bruno Redaelli; Stefano Mangano; Carlo Navino; Rosario Ariano; Marco Tagliaferri; Tommaso Fidelio; Mauro Corti; Silvia Civardi; Ciro Tetta

1998-01-01

400

An On-Line Self-Constructing Neural Fuzzy Inference Network and Its Applications  

Microsoft Academic Search

A self-constructing neural fuzzy inference network (SONFIN) with on-line learning ability is proposed in this pa- per. The SONFIN is inherently a modified Takagi-Sugeno-Kang (TSK)-type fuzzy rule-based model possessing neural network's learning ability. There are no rules initially in the SONFIN. They are created and adapted as on-line learning proceeds via simul- taneous structure and parameter identification. In the structure

Chia-Feng Juang; Chin-Teng Lin

1998-01-01

401

Screening of drugs in equine plasma using automated on-line solid-phase extraction coupled with liquid chromatography-tandem mass spectrometry.  

PubMed

A rapid liquid chromatography-tandem mass spectrometry (LC-MS-MS) method was developed for the simultaneous screening of 19 drugs of different classes in equine plasma using automated on-line solid-phase extraction (SPE) coupled with a triple quadrupole mass spectrometer. Plasma samples were first protein precipitated using acetonitrile. After centrifugation, the supernatant was directly injected into the on-line SPE system and analysed by a triple quadrupole LC-MS-MS in positive electrospray ionisation (+ESI) mode with selected reaction monitoring (SRM) scan function. On-line extraction and chromatographic separation of the targeted drugs were performed using respectively a polymeric extraction column (2 cm L x 2.1mm ID, 25 microm particle size) and a reversed-phase C18 LC column (3 cm L x 2.1mm ID, 3 microm particle size) with gradient elution to provide fast analysis time. The overall instrument turnaround time was 9.5 min, inclusive of post-run and equilibration time. Plasma samples fortified with 19 targeted drugs including narcotic analgesics, local anaesthetics, antipsychotics, bronchodilators, mucolytics, corticosteroids, sedative and tranquillisers at sub-parts per billion (ppb) to low parts per trillion (ppt) levels could be consistently detected. No significant matrix interference was observed at the expected retention times of the targeted ion transitions. Over 70% of the drugs studied gave detection limits at or below 100 pg/mL, with some detection limits reaching down to 19 pg/mL. The method had been validated for extraction recovery, precision and sensitivity, and a blockage study had also been carried out. This method is used regularly in the authors' laboratory to screen for the presence of targeted drugs in pre-race plasma samples from racehorses. PMID:20122690

Kwok, W H; Leung, David K K; Leung, Gary N W; Wan, Terence S M; Wong, Colton H F; Wong, Jenny K Y

2010-05-01

402

7 CFR 52.38b - Statistical sampling procedures for on-line inspection by attributes of processed fruits and...  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Statistical sampling procedures for on-line inspection by attributes...Regulations Governing Inspection and Certification Sampling § 52.38b Statistical sampling procedures for on-line inspection by...

2010-01-01

403

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

Microsoft Academic Search

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

Chin-Lung Hsu; Hsi-Peng Lu

2004-01-01

404

On-line versus o-line vestibular-evoked control of goal-directed arm movements  

E-print Network

On-line versus o¡-line vestibular-evoked control of goal-directed arm movements Jean 2002 The present study tested whether vestibular input can be pro- cessed on-line to control goal of visual space through vestibular signals than in monitoring on-line body orientation to control arm

Jirsa, Viktor

405

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

ERIC Educational Resources Information Center

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…

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

406

Development of On-line Liquid Chromatography-Biochemical Detection for Soluble Epoxide Hydrolase Inhibitors in Mixtures  

E-print Network

ORIGINAL Development of On-line Liquid Chromatography-Biochemical Detection for Soluble Epoxide system (BCD) was coupled on-line to liquid chromatography (LC) to allow mixture analysis. The on-line BCD providingnew opportunities in the development of drug candidates. Keywords Column liquid chromatography Á On

Hammock, Bruce D.

407

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

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.

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

408

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

PubMed

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

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

2010-07-01

409

A new approach to on-line mechanical condenser tube cleaning  

SciTech Connect

For many years, condenser biofouling has been difficult to prevent/control. The benefits of maintaining clean condenser tubes to the efficient operation of steam electric power plants include: (1) Prevention of Heat Rate Degradation (2) Extended Condenser Tube Life (3) Elimination of Outages to Clean the Condenser. TU Electric`s Martin Lake Plant has been utilizing an innovative on-line mechanical tube cleaning system since April, 1992 to maintain condenser cleanliness while eliminating the use of chlorine to control biofouling. The system is operated as a tube cleaning service; therefore, no capital investment or plant retrofit was required. The system was installed while the units were operating at base load. The results of the on-line cleaning effectiveness were determined by the EPRI Plant Monitoring Workstation, installed test grade instrumentation, and on-line video borescope tube inspections.

Ulvog, P.C. [T.U. Electric, Tatum, TX (United States)

1995-06-01

410

On-line interprofessional learning: introducing constructivism through enquiry-based learning and peer review.  

PubMed

Interest in on-line methods of learning has accelerated in recent years. There has also been an interest in developing student-centred approaches to learning and interprofessional education. This paper illustrates the issues in designing a large (more than 700 students), on-line, inter-professional module for third year, undergraduate students drawn from nine professional healthcare courses and from four campus sites. It uses an enquiry-based learning approach. The learning theories of Piaget, Vygotsky and Schön are integrated with the on-line frameworks of Salmon and Collis et al., together with conclusions drawn from the literature and our own experiences, to produce a design that encourages students to learn through participation, re-iteration, peer-review and reflection. Consideration is given to improving student motivation and attitudes towards change, both in the design and the delivery of the module. PMID:15369969

Hughes, Matthew; Ventura, Susie; Dando, Mark

2004-08-01

411

REMPI-TOFMS for on-line monitoring and controlling the coffee roasting process  

NASA Astrophysics Data System (ADS)

REMPI@266nm-TOFMS is used for on-line analysis of the coffee roasting process. Volatile and flavor active compounds of coffee were ionized by REMPI@266nm and monitored on-line and in real-time by TOFMS during the coffee roasting process. The phenol and 4-vinylguaiacol time-intensity profiles, for example, show typical behavior for different roasting temperatures and provide an indicator to the achieved degree of roasting. The impact of the moisture level of the green coffee beans on the time shift of a typical (commercial) roasting time, correlates with REMPI-TOFMS measurements and literature data.

Dorfner, Ralph; Ferge, Thomas; Yeretzian, Chahan; Zimmermann, Ralf; Kettrup, Antonius

2001-08-01

412

Hydraulic decoking on-line monitoring system based on the optical fiber sensing technology  

NASA Astrophysics Data System (ADS)

We present that an improved optical fiber acoustic emission sensor has been applied to the hydraulic decoking on-line monitoring system for the first time, meanwhile the characteristics of the improved acoustic emission sensor are analyzed. The actual research results of China Petrochemical Wuhan Petrochemical Corporation Group show that hydraulic decoking on-line monitoring system can monitor the real-time and accurate states of hydraulic decoking based on the optical fiber acoustic emission sensor technology, the system can realize the automation of hydraulic decoking monitoring effectively.

Zhong, Dong; Tong, Xing-lin; Ji, Tao

2013-09-01

413

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

NASA Astrophysics Data System (ADS)

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.

Lu, Siliang; He, Qingbo; Kong, Fanrang

2014-06-01

414

On-line sulfur determination in coal with prompt gamma neutron activation  

NASA Astrophysics Data System (ADS)

The prompt gamma neutron activation method has been found to be a useful technique for the on-line industrial measurements of bulk media. Based on this method, a system was developed for the on-line sulfur determination in coal. A 252Cf source is used for the production of neutrons and a high purity germanium (HPGe) detector is used for the detection of the gamma rays emitted. The system has been found to be linear over the range tested (0.5-6% in weight sulfur). Neutron-absorbing trace elements in coal such as Cl, were found to have no influence on the sulfur determination of the samples.

Vourvopoulos, George; Womble, Phillip C.

1989-02-01

415

On-line rapid coal analysis offers processing and marketing opportunities  

SciTech Connect

The author compares two classes of instrumentation that assay one or more aspects of coal quality in bulk amounts, on-line and in real-time. They are gamma ash meters and prompt-gamma-neutron-activation analysis (PGNAA). He then reviews several applications of an on-line rapid analysis: quality assurance, sorting, blending, and plant control. Economically, he says the analysis is roughly in the same state as were personal computers in 1980. However, ten years from now, the mining community may well wonder how it ever managed without it.

Zumberge, J.F.

1987-11-01

416

Landscape-scale tropical forest dynamics: Relating canopy traits and topographically derived hydrologic indices in a floodplain system using CAO-AToMS  

NASA Astrophysics Data System (ADS)

The geomorphology of floodplains in the humid tropics has been used to infer basic classifications of forest types. However, analysis of the landscape-scale topographic and hydrologic patterns underpinning spatial variation in forest composition and function remain elusive due to the sparse coverage of forest plots, coarse resolution remotely sensed data, and the challenges of collecting first order hydrologic data. Airborne remote measurements provide an opportunity to consider the relationship between high-resolution topographic and derived hydrologic environmental gradients, and forest canopy characteristics with important cascading effects on ecosystem function and biosphere-atmosphere interactions. In 2011, the Carnegie Airborne Observatory (CAO) Airborne Taxonomic Mapping System (AToMS) was used to map a large section of the Los Amigos Conservation Concession harboring largely intact lowland humid tropical forest in the southwestern Peruvian Amazon. The CAO Visible-Shortwave Imaging Spectrometer (VSWIR) collected 480-band high-fidelity imaging spectroscopy data of the forest canopy, while its high-resolution dual waveform LiDAR captured information on canopy structure and the underlying terrain. The data were used to quantify relationships between topographic and hydrologic gradients and forest functional traits. Results suggest strong local hydrogeomorphic control over vegetation spectral properties with known relationships to canopy functional traits, including pigment and nutrient concentrations and light capture, as well as canopy structural characteristics, including vegetation height, understory plant cover, and aboveground biomass. Data from CAO-AToMS reveals local-scale patterns in environmental conditions and ecological variation that meets or exceeds the variation previously reported across ecosystems of the Western Amazon Basin.

Chadwick, K.; Asner, G. P.

2012-12-01

417

Strain and interface effects on the magnetic and transport properties of La0.7Ca0.3MnO3/CaO multilayers  

NASA Astrophysics Data System (ADS)

La0.7Ca0.3MnO3/CaO (LCMO/CaO) multilayers were deposited on (100) LaAlO3 substrates by pulsed injection metal organic chemical vapour deposition. The samples were characterised by X-ray diffraction, transport and magnetization measurements. An anomalous behaviour of the electrical resistance under applied magnetic field and an exchange bias effect for the magnetization are observed for the multilayers with thinner LCMO layers. These results suggest the existence of a short range antiferromagnetic coupling at the layer interfaces.

Casaca, A.; Borges, R. P.; Ferreira, P.; Saraiva, A.; Rosa, M. A.; da Silva, R. C.; Nunes, W. C.; Magalhães, S.; Godinho, M.

2009-03-01

418

High-intensity atomic oxygen radical anion emission mechanism from 12CaO·7Al 2O 3 crystal surface  

NASA Astrophysics Data System (ADS)

12CaO · 7Al 2O 3 (C12A7) crystal is an interesting material where a large amount of O -(c) and O 2-(c) can be formed and trapped in the cages when it is sintered in dry oxygen. The emissive features of this material including the emission species, temperature dependence, field dependence, emission branch ratio, emission stability, the effects of water on the emission intensity, have been investigated. The temperature and oxygen pressure dependences of the electrical conductivity have also been measured. The mechanisms of the O - emission have been discussed based on the investigations of the emission and electrical conductivity features.

Li, Quanxin; Hosono, Hideo; Hirano, Masahiro; Hayashi, Katsuro; Nishioka, Masateru; Kashiwagi, Hideo; Torimoto, Yoshifumi; Sadakata, Masayoshi

2003-03-01

419

Electronic insulator-conductor conversion in hydride ion-doped 12CaO.7Al2O3 by electron-beam irradiation  

Microsoft Academic Search

We report formation of persistent carrier electrons in hydride ion (H-)-incorporated 12CaO.7Al2O3 (C12A7) by electron-beam irradiation. The electrical conductivity of H--doped C12A7 single crystals increases with the electron-beam irradiation dose, accompanied with a green coloration attributable to a carrier electron formation. A 25 keV electron beam with a dose of ~500 muC cm-2 fully converts the conductivity in surface layers

Katsuro Hayashi; Yoshitake Toda; Toshio Kamiya; Masahiro Hirano; Minako Yamanaka; Isao Tanaka; Takahisa Yamamoto; Hideo Hosono

2005-01-01

420

Improvement of on-line solid-phase extraction for determining phenolic compounds in water  

Microsoft Academic Search

Modifying the most common design for the on-line coupling of a precolumn to reversed phase LC with diode array detection has resulted in reduction of the broadening of the peaks which results when the compounds of interest are strongly retained by a highly hydrophobic sorbent. The modification consists of the desorption of the analytes trapped on the precolumn solely by

E. Pocurull; R. M. Marcé; F. Borrull

1995-01-01

421

In Search of On-Line Locality Effects in Sentence Comprehension  

ERIC Educational Resources Information Center

Many comprehension theories assert that increasing the distance between elements participating in a linguistic relation (e.g., a verb and a noun phrase argument) increases the difficulty of establishing that relation during on-line comprehension. Such "locality effects" are expected to increase reading times and are thought to reveal properties…

Bartek, Brian; Lewis, Richard L.; Vasishth, Shravan; Smith, Mason R.

2011-01-01

422

Course OnLine (COL) Android Player DePaul University, College of CDM  

E-print Network

1 Course OnLine (COL) Android Player DePaul University, College of CDM September 2011 Contents................................................................................................................................................10 Introduction The CDM COL Android Player is an Android application that takes advantage of Adobe AIR technology to provide COL lecture viewing capabilities on Android devices. It is designed for use

Schaefer, Marcus

423

Wetlands Research Program Technical Report Y-87-1 (on-line edition) Corps of Engineers  

E-print Network

Wetlands Research Program Technical Report Y-87-1 (on-line edition) Corps of Engineers Wetlands used as part of the number designating technical reports of research published under the Wetlands;Wetlands Research Program Technical Report Y-87-1 January 1987 Corps of Engineers Wetlands Delineation

US Army Corps of Engineers

424

Automatic Detection of Gender and Handedness from On-Line Handwriting  

E-print Network

), handwriting can also be divided into writer-specific sub-categories including gender, handedness, ageAutomatic Detection of Gender and Handedness from On-Line Handwriting Marcus LIWICKI a Andreas address the problem of classifying handwritten data with respect to gender and handedness

Liwicki, Marcus

425

Structuring programs for multiprogram time-sharing on-line applications  

Microsoft Academic Search

The modern art of computation has developed from plugboard programming through the stored machine instruction programs controlled by the users on the consoles, then to problem-oriented symbolic programs computed in the batch mode, towards the on-line computing during which the users have a large amount of control over their programs. The lower cost per computation and flexibilities of a large

Kenneth Lock

1965-01-01

426

Data Broadcast Scheduling : On-line and O -line Algorithms Nitin H. Vaidya Sohail Hameed  

E-print Network

.3.1 Comparison of Buckets and Multi-disk 3] : : : : : : : : : : : : : : : : : : : 12 3.4 Cyclic SchedulingData Broadcast Scheduling : On-line and O -line Algorithms Nitin H. Vaidya Sohail Hameed Department is to determine the schedule for broadcasting the data, such that the wait encountered by the clients is minimized

Vaidya, Nitin

427

ON-LINE ZEEMAN ATOMIC ABSORPTION SPECTROSCOPY FOR MERCURY ANALYSIS IN OIL SHALE GASES  

EPA Science Inventory

This publication describes the development and initial testing of instrumentation for continuous on-line analytical measurement of mercury concentrations in complex gas streams or in ambient air, in the presence of smoke, organic vapors, and oil mist from oil shale processing pla...

428

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

ERIC Educational Resources Information Center

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)

Keeler, Mary; Kloesel, Christian

1997-01-01

429

On-line Estimation of Error Covariance Parameters for Atmospheric Data Assimilation  

Microsoft Academic Search

We present a simple scheme for on-line estimation of covariance parameters in statistical data assimilation systems. The scheme is bas ed on a maximum- likelihood approach in which estimates are produced on the basis of a single batch of simultaneous observations. Single-sample covariance estimation is reasonable as long as the number of available observations exceeds the number of tunable parameters

Dick P. Dee

1995-01-01

430

Effects of visible and invisible cueing on line bisection and Landmark performance in hemispatial neglect  

Microsoft Academic Search

A total of 12 patients with hemispatial neglect (and two control groups) were tested to examine the effects of lateralized cues on line bisection and Landmark judgements. The experiment was designed to investigate whether bisection and landmark biases induced by cueing are simply a result of a direct perceptual lengthening of the cued part of the line caused by the

Bettina Olk; Monika Harvey

2002-01-01

431

Microwave Techniques for On-Line Determination of Pulverised Coal Mass Flow  

Microsoft Academic Search

The CSIRO Division of Mineral and Process Engineering has been investigating the use of microwave techniques for the on-line determination of the mass flow rate of pulverised coal in coal-fued power stations. Microwave techniques presently under development involve a measurement of microwave phase shift and attenuation to detexmine mass loading, and microwave Doppler shift to determine flow velocity. Laboratory measwments

T. G. Evans; N. G. Cutmore; E. Zoud; F. J. Paoloni

1992-01-01

432

Modeling Player Session Times of On-line Games Francis Chang Wu-chang Feng  

E-print Network

Modeling Player Session Times of On-line Games Francis Chang Wu-chang Feng OGI@OHSU {francis-line games is to model the traffic behavior of the client. While modeling the client ON-OFF times in web traffic has allowed researchers to generate accu- rate fractal models of aggregate web traffic, similar

433

Design Features of On-Line Anatomy Information Resources: A Comparison with the Digital Anatomist  

E-print Network

. In addition to videodisks and CD-ROMs, hundreds of anatomy web sites present Visible Human and other1 Design Features of On-Line Anatomy Information Resources: A Comparison with the Digital Anatomist for learning and teaching anatomy as medical students, and have also examined available anatomy web sites

Washington at Seattle, University of

434

Map-based Access to Multiple Educational On-Line Resources from Mobile Wireless Devices  

E-print Network

Map-based Access to Multiple Educational On-Line Resources from Mobile Wireless Devices P textual sources on mobile devices. The bottleneck here is finding a relevant educational resource peterb@sis.pitt.edu 2 Institute for Educational and Training Technologies, Italian National Research

Brusilovsky, Peter

435

On-line Learning for Covert and Overt Perceptual Capability for Vision-based Navigation  

E-print Network

On-line Learning for Covert and Overt Perceptual Capability for Vision-based Navigation Zhengping' covert and overt perceptual capabilities using reinforce- ment and supervised learning. Covert perceptual behaviors are treated as actions selected by a motivational system. Overt perceptual behaviors can

436

Scaffolding on-line segmentation of full body human motion patterns  

Microsoft Academic Search

This paper develops an approach for on-line seg- mentation of whole body human motion patterns during human motion observation and learning. A Hidden Markov Model is used to represent the incoming data sequence, where each model state represents the probability density estimate over a window of the data. Based on the assumption that data belonging to the same motion primitive

Dana Kulic; Yoshihiko Nakamura

2008-01-01

437

On-line allocation of robot resources to task plans Damian M. Lyons  

E-print Network

On-line allocation of robot resources to task plans Damian M. Lyons 1 Introduction In this paper, I allocation example is based on the robot assembly cell architecture outlined by Venkataraman and Lyons[16]. I) that are available to carry out the task. I formulate the assembly cell architecture of Venkataraman and Lyons[16

Lyons, Damian M.

438

A Bank of Chemistry Questions on an On-Line Server.  

ERIC Educational Resources Information Center

Presents an on-line, server-based examination system for analytical chemistry or any other subject suitable for administration over large geographical areas for students in distance education to do self-assessment. Discusses the advantages of the system which combines course material with the examination system so that the examination system may…

Hoole, Dushyanthi; Yogendran, N.; Thavachandran, S.; Priyatharshan, P.; Hoole, S. R. H.

2002-01-01

439

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

Microsoft Academic Search

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

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

1996-01-01

440

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

E-print Network

´evign´e, France 3 ONERA-CERT, 31055, Toulouse Cedex, France 4 ETSE-URV, 43007 Tarragona (Catalonia), Spain Email: joaquin.garcia@uab.es frederic.cuppens@enst-bretagne.fr, fautrel@cert.fr, jcaste@etse.urv.es, {jborrell sources, our approach will help the on-line casino administrator to decide if a player leaving a game

Navarro-Arribas, Guillermo

441

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

E-print Network

´evign´e, France 3 ONERA-CERT, 31055, Toulouse Cedex, France 4 ETSE-URV, 43007 Tarragona (Catalonia), Spain Email: joaquin.garcia@uab.es, frederic.cuppens@enst-bretagne.fr, fautrel@cert.fr, jcaste@etse.urv.es, {jborrell by multiple sources, our approach will help the on-line casino administrator to decide if a player leaving

Garcia-Alfaro, Joaquin

442

Syntax Encodes Information Structure: Evidence from On-Line Reading Comprehension  

ERIC Educational Resources Information Center

Although sentences are thought to be generally easier to process when given information precedes new information, closer examination reveals that these preferences only manifest within some syntactic structures. Here, we examine the consequences of the relative ordering of given and new information ("information structure") for the on-line…

Brown, Meredith; Savova, Virginia; Gibson, Edward

2012-01-01

443

Software Approach to Hazard Detection Using On-line Analysis of Safety Constraints  

E-print Network

Software Approach to Hazard Detection Using On-line Analysis of Safety Constraints Beth Schroedey. The research here addresses the problem of enhancing software safety through hazard detection. The premise.gatech.edu Abstract Hazard situations in safety-critical systems are typically complex, so there is a need for means

Plale, Beth

444

An Exact Method for On-line Identification of FOPDT Processes  

Microsoft Academic Search

A new method for on-line process identification and PI controller tuning is proposed. The proposed structure inserts an ideal relay in parallel to a conventional PI controller to induce limit cycle output. The parallel connection of the ideal relay to the PI controller helps in designing a robust controller in presence of static load disturbances in the process. With the

P. K. Padhy; S. Majhi

2006-01-01

445

MODELS OF ON-LINE SOCIAL NETWORKS ANTHONY BONATO, NOOR HADI, PAUL HORN, PAWEL PRALAT,  

E-print Network

increasingly popular in recent years. In OSNs, nodes represent people on-line, and edges correspond to a friendship relation between them. In these complex real-world networks with sometimes millions of nodes and edges, new nodes and edges dynamically appear over time. Parallel with their popularity among

Wang, Changping

446

On-line grid impedance estimation based on harmonic injection for grid-connected PV inverter  

Microsoft Academic Search

The paper presents an on-line software method for impedance estimation of the energized impedances such as power system grid. The proposed method is based on producing a perturbation on the output of the power converter that is in the form of periodical injection of one or two voltage harmonic signals. The single harmonic injection uses a 600 Hz signal and

Mihai Ciobotaru; Remus Teodorescu; Frede Blaabjerg

2007-01-01

447

On-line Power Savings in a Distributed Multi-stage Router Architecture  

E-print Network

On-line Power Savings in a Distributed Multi-stage Router Architecture Andrea Bianco, Fikru on a distributed multi-stage software router (MSSR) architecture internally composed by several per- sonal computers (PCs) to overcome scalability and performance issues of software routers (SRs) based on a single

448

On-line Hand-Eye Calibration Nicolas Andre , Radu Horaud, Bernard Espiau  

E-print Network

On-line Hand-Eye Calibration Nicolas Andre , Radu Horaud, Bernard Espiau INRIA Rh^one-Alpes GRAVIR.lastname@inrialpes.fr Abstract In this paper, we address the problem of hand-eye calibration of a robot mounted video camera-line hand-eye calibration method. This method allows to get rid of the calibration object required

Paris-Sud XI, Université de

449

On-line signature verification method by Laplacian spectral analysis and dynamic time warping  

NASA Astrophysics Data System (ADS)

As smartphones and touch screens are more and more popular, on-line signature verification technology can be used as one of personal identification means for mobile computing. In this paper, a novel Laplacian Spectral Analysis (LSA) based on-line signature verification method is presented and an integration framework of LSA and Dynamic Time Warping (DTW) based methods for practical application is proposed. In LSA based method, a Laplacian matrix is constructed by regarding the on-line signature as a graph. The signature's writing speed information is utilized in the Laplacian matrix of the graph. The eigenvalue spectrum of the Laplacian matrix is analyzed and used for signature verification. The framework to integrate LSA and DTW methods is further proposed. DTW is integrated at two stages. First, it is used to provide stroke matching results for the LSA method to construct the corresponding graph better. Second, the on-line signature verification results by DTW are fused with that of the LSA method. Experimental results on public signature database and practical signature data on mobile phones proved the effectiveness of the proposed method.

Li, Changting; Peng, Liangrui; Liu, Changsong; Ding, Xiaoqing

2013-12-01

450

A new method of on-line grid impedance estimation for PV inverter  

Microsoft Academic Search

The recent increase in photovoltaic (PV) installations calls for new and better power quality requirements with respect to connection to the grid supply. Therefore, different methods are typically used for continuous grid monitoring, usually by using external devices. In this paper a new method for on-line measuring the grid impedance is presented. The presented method requires no extra hardware being

Lucian Asiminoaei; Remus Teodorescu; Frede Blaabjerg; Uffe Borup

2004-01-01

451

On-line timetable re-scheduling in regional train services  

Microsoft Academic Search

In the daily activity of regional railway traffic, when the circulation frequencies are high, any anomaly that alters the scheduled circulation of trains may distort any of all of the established timetables and involve re-scheduling many of services, due to the numerous possible alternatives for resolving the situation. An on-line model is presented in this article which helps in choosing

B. Adenso-D??az; M. Oliva González; P. González-Torre

1999-01-01

452

Waste Evaluation Request Fill in on-line then print and sign  

E-print Network

Waste Evaluation Request Fill in on-line then print and sign Fax to: 206-685-2915 Otherwise mail to Box Number Waste Name WASTE COMPOSITION List all components of waste. For solutions and mixtures will be correctly packaged and labeled according to the University of Washington Laboratory Safety Manual. I also

Wilcock, William

453

FAIRWIS: A System for Improving On-line Trade Fair Services  

Microsoft Academic Search

FAIRWIS is an EU funded project that aims at offering on-line innovative services to support business processes of both real and virtual trade fairs. This paper describes some innovative features of FAIRWIS system, focusing primarily on the generation of 2D and 3D visualiza tions that are exploited to facilitate human- computer interaction, to allow easy access to the stored data,

Paolo BUONO; Maria Francesca COSTABILE; Matthias HEMMJE; Gerald JAESCHKE; Claudio MUSCOGIURI; Emanuela PAUSELLI

454

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

E-print Network

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

Paris-Sud XI, Université de

455

Digital Imaging Based On-Line Particle Sizing of `Green' Biomass Fuels in Power Generation  

Microsoft Academic Search

In resent times biomass fuels have become more popular and are often mixed with coal in the interests of sustainable energy. These materials present wildly varying size and shape properties that may affect combustion efficiency. This paper presents the results of an investigation into the usefulness of the existing size measurement instrument, developed by the authors, for on-line biomass measurement.

R. M. Carter; Y. Yan

2007-01-01

456

The Development of Deep Learning During a Synchronous Collaborative On-line Course  

Microsoft Academic Search

As Internet bandwidth improves and connections become more reliable, on-line course designers will be encouraged to make more structured use of synchronous communications. Little work has so far been reported on how to make the best use of synchronous communications to support a problem solving approach. The OTIS pilot course made extensive use of synchronous communication to support learning through

Gillian Armitt; Frances Slack; Sharon Green; Martin Beer

457

On-line video media for continuing professional development in dentistry  

Microsoft Academic Search

This project investigated the exploitation of on-line video media for the Continuing Professional Development (CPD) of dentists. More specifically it focused on the evolution of the video media from videoconferencing to simple and complex webcasting. The study aimed to establish models of best practice for the use of both videoconferencing and webcasting in the training of dentists. The three phases

Patricia A. Reynolds; Robin Mason

2002-01-01

458

ISSN: 1526-1492 (print) ISSN: 1526-1506 (on-line) Tech Science Press  

E-print Network

discretization using a curvilinear 1 Université de Pau et des Pays de l'Adour, CNRS and INRIA Magique-3DISSN: 1526-1492 (print) ISSN: 1526-1506 (on-line) Tech Science Press Founder and Editor be introduced for instance in shal- low water equations, pollutants transport, geophysical or industrial flows

Martin, Roland

459

On-Line Fault Detection and Compensation of Hydraulic Driven Machines Using Modelling Techniques  

E-print Network

robotics and aerospace to heavy industrial systems. Electro-hydraulic drive systems are related for the industrial maintenance processes. Hydraulic motors are subject to a fault in a system that is oftenOn-Line Fault Detection and Compensation of Hydraulic Driven Machines Using Modelling Techniques C

Thawonmas, Ruck

460

Using an On-Line Tool To Investigate Chemical Engineering Seniors' Concept of the Design Process.  

ERIC Educational Resources Information Center

In this study, multidimensional scaling (MDS) was used to measure how 23 chemical engineering seniors categorized key design terms at the beginning and end of a capstone design course. An on-line method was developed to collect the MDS data. The results suggest that some important design concepts were not well understood, even at the end of the…

Streveler, Ruth A.; Miller, Ronald L.; Boyd, Thomas M.

461

DEPLOYMENT OF A WATER QUALITY EARLY WARNING SYSTEM USING ON-LINE TOXICITY MONITORS  

EPA Science Inventory

Contaminants are of concern when they are found in concentrations that are toxic to plants and/or animals. On–line Toxicity Monitors (OTMs) integrate all factors resulting in stress including physical and chemical qualities. This is important because of the limitations of c...

462

Real-Time Tracking with On-line Feature Selection Michael Grabner, Helmut Grabner, Horst Bischof  

E-print Network

] for tracking. The distinct advantage of the method is its capability of updating a model (classifier) during PC with 512 MB RAM). The main innovation of the proposed tracking approach is an on-line Ada IS EVALUATED AT MANY POSSIBLE POSITIONS IN A SURROUNDING SEARCH REGION IN FRAME t + 1. THE ACHIEVED CONFIDENCE

Grabner, Helmut

463

On-Line Journal Tips and Refreshers Cash Receipt and Credit Card Journals  

E-print Network

On-Line Journal Tips and Refreshers Cash Receipt and Credit Card Journals Updated April 2009 Updated 04/30/2010 1 Cash Receipt and Credit Card Journals ­ Source Code 320 and 323 Purpose Cash Receipt more or once a week ­ whichever comes first. 2. Journals should be dated the date they are prepared

Yamamoto, Keith

464

Aging in Biometrics: An Experimental Analysis on On-Line Signature  

E-print Network

in Biometrics: An Experimental Analysis on On-Line Signature. PLoS ONE 8(7): e69897. doi:10.1371/ journal 13, 2013; Published July 23, 2013 Copyright: Ã? 2013 Galbally et al. This is an open-access article], up to date most efforts undertaken by the different parties involved in the development

Autonoma de Madrid, Universidad

465

An Evaluation of On-Line Assignment Submission, Marking, and Return  

ERIC Educational Resources Information Center

Technology has made a significant impact on assessment, including its use to automate assignment submission. On-line assignment submission, marking, and return were introduced into a fourth-year engineering management unit for the first time, and a formal evaluation was undertaken to assess student perceptions of this new development. Nearly all…

Palmer, Stuart

2006-01-01

466

In Search of the Best On-Line Degree Programs in Human Resources.  

ERIC Educational Resources Information Center

The advent of the Internet, the World Wide Web, and global infrastructures for e-learning are revolutionizing how colleges and universities deliver degree programs to adult students. Benefits of on-line degree programs to working adults include flexibility, convenience, and time and cost savings. New technologies that greatly affect how online…

Kirk, James J.; Waltemyer, Holly

467

Distributed on-line schedule adaptation for balanced slot allocation in wireless ad hoc networks  

E-print Network

Distributed on-line schedule adaptation for balanced slot allocation in wireless ad hoc networks, then conflict-free transmissions can take place at the same time. Even if this method mitigates collisions due period of length T. We first introduce a fluid model of the system where the conflict avoidance

468

On-line preconcentration strategies for analyzing pesticides in fruits and vegetables by micellar electrokinetic chromatography.  

PubMed

Five pesticides (fludioxonil, procymidone, pyriproxyfen, dinoseb and carbendazim) were separated in reversed migration micellar electrokinetic chromatography (RM-MEKC) using 20 mmol l(-1) phosphate buffer at pH 2.3, containing 25 mmol l(-1) sodium dodecylsulfate and 10% methanol. Three on-line concentration strategies, sweeping (SW), normal stacking with reversed migration and a water plug (SRW) and stacking with reverse migration and removal of sample matrix using polarity switching (SRMM), were compared. About 10-, 30- and 50-fold increases in detection sensitivity, compared with standard hydrodynamic injection (5 s at 0.5 psi), were observed with SW, SRW and SRMM, respectively. Limits of detection (LODs) ranged from 0.002 to 0.03 microg ml(-1) using only the on-line preconcentration procedures without any off-line concentration of the extract. A solid-phase extraction (SPE) procedure, for previous isolation and concentration of the analytes, was used in combination with any of the proposed on-line preconcentration strategies, which achieves the determination of pesticides at limits of quantification (LOQs) lower than 0.01 mg kg(-1). The recoveries obtained by SPE in samples spiked at 0.01 mg kg(-1) were between 70 and 100%, with RSDs between 10 and 18% using SRMM. Samples of fruits and vegetables were taken from the market, extracted by the proposed procedure and analyzed with RM-MEKC with the on-line strategies. PMID:17306816

Juan-García, Ana; Font, Guillermina; Picó, Yolanda

2007-06-15

469

Machine-Learning for Big Data: Sampling and Distributed On-Line Algorithms  

E-print Network

Machine-Learning for Big Data: Sampling and Distributed On-Line Algorithms Stéphan Clémençon LTCI variance control: rate faster than n 1/2 3 Convex risk minimization 4 Oracle inequalities #12;Big Data? Big phones, internet, embedded systems, social networks, . . .) · to store and manage Big (and Complex) Data

Combettes, Patrick Louis

470

Consensus-based Evaluation for Fault Isolation and On-line Evolutionary Regeneration  

E-print Network

Consensus-based Evaluation for Fault Isolation and On-line Evolutionary Regeneration Kening Zhang. A new paradigm for online EH regeneration using Genetic Algorithms (GAs) called Consensus Based-line regeneration of functionality is achieved without additional test vectors by using the results of competitions

DeMara, Ronald F.

471

A PROTOTYPE FOR ON-LINE MONITORING AND CONTROL OF ENERGY PERFORMANCE FOR RENEWABLE ENERGY  

E-print Network

A PROTOTYPE FOR ON-LINE MONITORING AND CONTROL OF ENERGY PERFORMANCE FOR RENEWABLE ENERGY BUILDINGS@univ-perp.fr Keywords: Renewable energies, energy performance indicators, monitoring system, smart transducers, control. Control algorithms are tested in simulation to improve renewable energy consumption while reducing fossil

Paris-Sud XI, Université de

472

Long-term prospective on-line real-time seizure prediction  

Microsoft Academic Search

Objective: Epilepsy, one of the most common neurological disorders, constitutes a unique opportunity to study the dynamics of spatiotemporal state transitions in real, complex, nonlinear dynamical systems. In this study, we evaluate the performance of a prospective on-line real-time seizure prediction algorithm in two patients from a common database. Methods: We previously demonstrated that measures of chaos and angular frequency,

L. D. Iasemidisa; D.-S. Shiaug; W. Chaovalitwongsed; K. Narayanana; A. Prasada; Malcolm Randall

473

The Impact of Recurrent On-Line Synchronous Scientific Argumentation on Students' Argumentation and Conceptual Change  

ERIC Educational Resources Information Center

This study reports the impact of Recurrent On-Line Synchronous Scientific Argumentation learning on 8th grade students' scientific argumentation ability and conceptual change involving physical science. The control group (N = 76) were recruited to receive conventional instruction whereas the experimental group (N = 74) received the Recurrent…

Chen, Chien-Hsien; She, Hsiao-Ching

2012-01-01

474

A Probabilistic On-Line Mapping Algorithm for Teams of Mobile Robots  

Microsoft Academic Search

An efficient probabilistic algorithm for the concurrent mapping and localization problem that arises in mobile robotics is presented. The algorithm addresses the problem in which a team of robots builds a map on-line while simultaneously accommodating errors in the robots’ odometry. At the core of the algorithm is a technique that combines fast maximum likelihood map growing with a Monte

Sebastian Thrun

2001-01-01

475

U of A Policies and Procedures On-Line Career Planning Committee Terms of Reference Policy  

E-print Network

process by providing information and support through all phases of career exploration, decision making for curriculum and extracurricular sessions associated with career planning and decision making through the 4U of A Policies and Procedures On-Line DRAFT Career Planning Committee Terms of Reference Policy

MacMillan, Andrew

476

Development of gamma-ray scanning facilities for on-line investigation of distillation columns.  

National Technical Information Service (NTIS)

Gamma-ray scanning facilities for on-line investigation of distillation columns which is based on the attenuation of gamma radiation was developed at the Unit Tenaga Nuklear. The system utilised Co-60 or Cs-137 as a gamma-ray emitter and NaI(Tl) detector ...

Mohd Azmi bin Ismail Jaafar bin Abdullah Jamaludin bin Omar

1994-01-01

477

CO 2Based Occupancy Detection for On-Line Outdoor Air Flow Control  

Microsoft Academic Search

This paper presents a dynamic method for detecting the actual occupancy in indoor spaces by measuring the carbon dioxide concentration of the return air and the outdoor air flow rate. The accuracy and response speed are tested and compared with the steady-state detection method. An on-line outdoor air flow control strategy using the dynamic detection method and the validation of

Shengwei Wang; Xinqiao Jin

1998-01-01

478

CO2Based Occupancy Detection for On-Line Outdoor Air Flow Control  

Microsoft Academic Search

This paper presents a dynamic method for detecting the actual occupancy in indoor spaces by measuring the carbon dioxide concentration of the return air and the outdoor air flow rate. The accuracy and response speed are tested and compared with the steady-state detection method. An on-line outdoor air flow control strategy using the dynamic detection method and the validation of

Shengwei Wang; Xinqiao Jin

1998-01-01

479

Using MotSaRT to Support On-Line Teachers in Student Motivation  

Microsoft Academic Search

Motivation to learn is affected by a student's self-efficacy, goal orientation, locus of control and perceived task difficulty. In the classroom, teachers know how to motivate their students and how to exploit this knowledge to adapt or optimize their instruction when a student shows signs of demotivation. In on-line learning environments it is much more difficult to assess the level

Teresa Hurley; Stephan Weibelzahl

2007-01-01

480

ON-LINE ALGORITHMS FOR PATH SELECTION IN A NONBLOCKING NETWORK  

E-print Network

ON-LINE ALGORITHMS FOR PATH SELECTION IN A NONBLOCKING NETWORK SANJEEV ARORA , F. THOMSON LEIGHTON , AND BRUCE M. MAGGS § Abstract. This paper presents the first optimal-time algorithms for path selection AMS subject classifications. 68M10, 90B12, 94C10 1. Introduction. 1.1. Definitions. Nonblocking

Arora, Sanjeev

481

A Grid Approach to Provide Effective Awareness to On-line Collaborative Learning Teams  

E-print Network

collaboration and improve the individual and group performance since it allows to track and assess the collaborative learning process for several purposes such as scaffolding and assessment of the learning outcomeA Grid Approach to Provide Effective Awareness to On-line Collaborative Learning Teams S. Caballé

Boyer, Edmond

482

WISE: Building an On-Line Database; Reference Manual for the 1110.  

ERIC Educational Resources Information Center

WISE is an on-line interactive information retrieval system designed particularly for bibliographic data bases, but it is potentially useful for any keyword-oriented data base. The WISE user searches a data base by entering and combining keywords that are appropriate to the data base and the subject area of interest. The user can also enter…

Kuczmarski, Tom

483

User Criteria for Selection of Commercial On-Line Computer-Based Bibliographic Services  

ERIC Educational Resources Information Center

Information culled from the literature and from the author's experience on criteria for selecting on-line computerized bibliographic services covers user needs, hardware (terminals), transmission, system and vendor, data bases, search strategy and evaluation measures, and user-system interface. (LS)

Marshall, Doris B.

1975-01-01

484

Greedy algorithms for on-line set-covering Giorgio Ausiello  

E-print Network

Greedy algorithms for on-line set-covering Giorgio Ausiello , Aristotelis Giannakos , Vangelis Th revealed). For this model we analyze a simple greedy algorithm consisting of taking Si0 into the cover, France. {giannako,paschos}@lamsade.dauphine.fr 37 hal-00120329,version1-14Dec2006 #12;Greedy algorithms

Paris-Sud XI, Université de

485

Designing Health Care Risk Management On-Line: Meeting Regulators' Concerns for Fixed-Hour Curriculum  

ERIC Educational Resources Information Center

This paper describes the experience of creating a continuing professional education on-line risk management program that is designed to meet Florida's educational requirements for licensure as a risk manager in health-care settings and details the challenges faced when the in-class didactic program of 15 eight-hour sessions is reformatted as an…

Hyer, Kathryn; Taylor, Heidi H.; Nanni, Kenneth

2004-01-01

486

ON-LINE CHAIN PARTITIONS OF ORDERS: BART LOMIEJ BOSEK, STEFAN FELSNER, KAMIL KLOCH, TOMASZ KRAWCZYK,  

E-print Network

of on-line algorithms and their performance is discussed in terms of two-person games and strategies-line chain partition problem. We like to describe this problem as a two-player coloring game. The players of the chains as being colored with di#11;erent colors and of the point to be colored in the color of the chain

Felsner, Stefan

487

Ontology enrichment through automatic semantic annotation of on-line glossaries.  

E-print Network

Ontology enrichment through automatic semantic annotation of on-line glossaries. Roberto Navigli1 expressions enriched with syntactic and semantic constraints. A word sense disambiguation algorithm, SSI enrichment and for document annotation with the concepts and properties of a domain core ontology. Natural

Velardi, Paola

488

Harnessing technology to support on-line model building and peer collaboration 1  

Microsoft Academic Search

Summary A large scale design study in which 3000 middle and high school students from California and Massachusetts collaborated on-line about plate tectonic activity in their respective location. The students, demographically diverse, participated in this curriculum using WISE, Web-based Inquiry Science Environment (Linn, 1998), an integrated set of software resources designed to engage students in rich inquiry activities. The curriculum

Janice Gobert

489

Results From Penn State's Interactive, On-line, Scifi Version Of Astro 001  

Microsoft Academic Search

We present results from a new, fully on-line astronomy course for undergraduate non-science majors at Penn State that was offered for the first time in Spring 2007 to 422 enrolled students. The entire course content is conveyed through an interactive story, capitalizing on the many multimedia astronomy resources publicly available on the Internet. The four units of the course (Basic

Christopher Palma; J. C. Charlton; K. Herrmann; A. Narayanan; N. Tr'Ehnl

2007-01-01

490

FROM THE OFFICE OF RESIDENCE LIFE 2012-2013 On-Line Housing Lottery  

E-print Network

FROM THE OFFICE OF RESIDENCE LIFE 2012-2013 On-Line Housing Lottery Your son or daughter will soon is Housing Lottery? Housing Lottery is the process by which our currently registered students select living of the Housing Lottery is to help Wittenberg students, individually or in roommate groups, to identify the living

Bogaerts, Steven

491

Dynamical and Stationary Properties of On-line Learning from Finite Training Sets  

E-print Network

to understand on-line learning with recycled examples. Early researchers used the approximate Fokker-Planck equation to describe the learning process [12, 13]. The use of perturbative expansions of the master dimensions, we derive equations for the macroscopic parameters, namely, the student-teacher correlation

Wong, Michael K Y

492

ON-LINE OPTIMIZATION, ENERGY ANALYSIS AND ENVIRONMENTAL IMPACT ASSESSMENT OF SULFURIC ACID CATALYZED ALKYLATION  

E-print Network

ON-LINE OPTIMIZATION, ENERGY ANALYSIS AND ENVIRONMENTAL IMPACT ASSESSMENT OF SULFURIC ACID in sulfuric acid consumption potentially could be obtained. 1. Introduction Alkylation process is one pool, increased amounts of gasoline per volume of crude oil and high heats of combustion. The overall

Pike, Ralph W.

493

Trust and Profit Sensitive Ranking for the Deep Web and On-line Advertisements  

E-print Network

is inapplicable (since deep web records do not have links). I formulated a method--namely SourceRank--to assessTrust and Profit Sensitive Ranking for the Deep Web and On-line Advertisements by Raju Balakrishnan of ranking the deep web data considering trustworthiness and relevance. I address the end-to-end deep web

Kambhampati, Subbarao

494

On-line adaptive neural training algorithm for an induction motor flux observer  

Microsoft Academic Search

This paper presents a new algorithm for induction motor stator flux observation. The novel procedure is based on a neural network with on-line adaptive training. The network topology is a standard multilayer perceptron (MLP) network and the training algorithm is based on sliding mode control (SMC) theory. The main characteristic of this novel observer is the adaptability of the gain

A. Nied; S. I. S. Junior; G. G. Parma; B. R. Menezes

2005-01-01

495

On-line reoptimization of filter designs for multivariate optical elements  

E-print Network

On-line reoptimization of filter designs for multivariate optical elements Frederick G. Haibach method for producing multivariate optical element MOE interference filters that are robust to errors species from their optical spectra.3­15 A multivariate opti- cal element MOE constructed

Myrick, Michael Lenn

496

Image Sequence Analysis for on line Observation of Thrombus Formation in Blood Vessels  

E-print Network

Image Sequence Analysis for on line Observation of Thrombus Formation in Blood Vessels Ralf T�NJES Institut für Theoretische Nachrichtentechnik und Informationsverarbeitung, Division: Automatic Image--Mail: toenjes@tnt.uni--hannover.de Abstract. An image analysis system for in vivo observation of thrombus

497

On-Line Mathematics Assessment: The Impact of Mode on Performance and Question Answering Strategies  

ERIC Educational Resources Information Center

The transition from paper-based to computer-based assessment raises a number of important issues about how mode might affect children's performance and question answering strategies. In this project 104 eleven-year-olds were given two sets of matched mathematics questions, one set on-line and the other on paper. Facility values were analyzed to…

Johnson, Martin; Green, Sylvia

2006-01-01

498

INCREMENTAL ON-LINE FEATURE SPACE MLLR ADAPTATION FOR TELEPHONY SPEECH RECOGNITION  

E-print Network

INCREMENTAL ON-LINE FEATURE SPACE MLLR ADAPTATION FOR TELEPHONY SPEECH RECOGNITION Yongxin Li Regression (FMLLR) for telephony speech recognition applica- tions. We explain how to incorporate a feature statistics are mapped and smoothed. 1. INTRODUCTION With speech recognition systems focusing more

Erdogan, Hakan

499

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

Microsoft Academic Search

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

Muhammad Talal Ibrahim; Matthew J. Kyan; Ling Guan

2008-01-01

500

On-Line, Real-Time Drug Utilization Review: Evolution toward Decision Support  

Microsoft Academic Search

On-line real-time drug utilization review (ORDUR) in general, and prospective drug utilization review, specifically, have been embraced conceptually by the health care industry. To date, ORDUR has focused on the avoidance of harmful drug combinations or misuse of medications as a means of both reducing costs and preventing adverse health outcomes. Health care organizations that are responsible for prescription drug

Suzanne Agner; Stephen Groover

1996-01-01