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1

The Design and Performance of the ZEUS Central Tracking Detector z-by-Timing System  

E-print Network

The ZEUS Central Tracking Detector utilizes a time difference measurement to provide a fast determination of the z-coordinate of each hit. The z-by-timing measurement is achieved by using a Time-to-Amplitude Converter which has an intrinsic timing resolution of 36 ps, has pipelined readout, and has a multihit capability of 48 ns. In order to maintain the required sub-nanosecond timing accuracy, the technique incorporates an automated self-calibration system. The readout of the z-by-timing data utilizes a fully customized timing control system which runs synchronously with the HERA beam-crossing clock, and a data acquisition system implemented on a network of Transputers. Three dimensional space-points provided by the z-by-timing system are used as input to all three levels of the ZEUS trigger and for offline track reconstruction. The average z-resolution is determined to be 4.4 cm for multi-track events from positron-proton collisions in the ZEUS detector.

D. S. Bailey; R. C. Carter; B. Foster; N. Harnew; G. P. Heath; M. D. Jeffs; T. Khatri; M. Lancaster; J. B. Lane; I. C. McArthur; J. D. McFall; R. Milborrow; C. J. S. Morgado; M. C. Morrissey; J. Nash; G. Nixon; D. A. Phillips; M. Postranecky; S. P. H. Quinton; P. D. Shield; S. Topp-Jorgensen; G. Westlake; D. J. White; F. F. Wilson; .

1997-07-18

2

Vertex reconstruction of ep interactions with the ZEUS Central Tracking Detector  

E-print Network

the interaction point and is design to measure direction, charge and momentum of charged particles with high collected by the ZEUS detector [1] at HERA. \\Lambda gideon@server.mta.ac.il y halina@joss.tau.ac.il z horn of the vertex along the z axis, determined by the direction along which particles collide. We use a simulation

Shamir, Ron

3

Mathematical Framework for Fast and Rigorous Track Fit for the ZEUS Detector  

E-print Network

In this note we present a mathematical framework for a rigorous approach to a common track fit for trackers located in the inner region of the ZEUS detector. The approach makes use of the Kalman filter and offers a rigorous treatment of magnetic field inhomogeneity, multiple scattering and energy loss. We describe mathematical details of the implementation of the Kalman filter technique with a reduced amount of computations for a cylindrical drift chamber, barrel and forward silicon strip detectors and a forward straw drift chamber. Options with homogeneous and inhomogeneous field are discussed. The fitting of tracks in one ZEUS event takes about of 20ms on standard PC.

Alexander Spiridonov

2008-12-05

4

Combined H1-ZEUS S Thomas Kluge  

E-print Network

from HERA now: combined H1/ZEUS fit of one observable: inclusive jet cross section #12;DIS08 7.theo. offset method: theo. ZEUSZEUS PDF ZEUS2002: theo.PDF ZEUS2002: theo. ZEUS H1 QCD Fits to the cross H1-ZEUS... Theory Error error on cross section due to R fitted S , central value #12;DIS08 7

5

30 MHz hardware digital filter for signals of the ZEUS forward tracking detector  

NASA Astrophysics Data System (ADS)

Here we describe the FADC modules for the 5184 channels of the forward tracking detector of the ZEUS experiment at HERA (DESY), which convert the incoming analogue signals on a 104 MHz clock and apply a hardware digital filtering and zero suppression procedure on the acquired data. A module works on 32 input channels, nine boards are grouped in a 9HU crate. On a given trigger, the data are sequentially transferred to an output buffer for final acquisition, passing a 30 MHz digital filter and zero suppression hardware. The module uses a 9 bit signed FIR filter with eight tabs, where the eight filter coefficients are freely programmable. Only signals with two successive filtered values above a certain threshold are stored for output. Due to the filter procedure the data reduction rate is greater than 95%. The system provides a processing power of 600 mops per board for the foreseen application. In addition to the data reduction the main benefit of the filtering process is the significantly improved separation of double signals.

Rost, M.; Weihs, W.

1994-06-01

6

DESY: The ZEUS Experiment  

NSDL National Science Digital Library

ZEUS is a collaboration of 450 physicists who are operating a large particle detector at the electron-proton collider HERA at the DESY laboratory in Hamburg. Researchers can find links to the ZEUS physics groups including High Q2, Diffraction and Vector Mesons, and Heavy Flavour Physics. Along with other tasks and components, visitors can learn about the Backing Calorimeter's role in preserving hermetic hadron jets energy measurement and aiding in the tracking of muons passing through the iron yoke of the detector. The website also provides links to the homepages of four of the computing facilities for Zeus.

7

Report of the Central Tracking Group  

SciTech Connect

Issues involved in building a realistic central tracking system for a general-purpose 4..pi.. detector for the SSC are addressed. Such a central tracking system must be capable of running at the full design luminosity of 10/sup 33/ cm/sup -2/s/sup -1/. Momentum measurement was required in a general-purpose 4..pi.. detector. Limitations on charged particle tracking detectors at the SSC imposed by rates and radiation damage are reviewed. Cell occupancy is the dominant constraint, which led us to the conclusion that only small cells, either wires or straw tubes, are suitable for a central tracking system at the SSC. Mechanical problems involved in building a central tracking system of either wires or straw tubes were studied, and our conclusion was that it is possible to build such a large central tracking system. Of course, a great deal of research and development is required. We also considered central tracking systems made of scintillating fibers or silicon microstrips, but our conclusion was that neither is a realistic candidate given the current state of technology. We began to work on computer simulation of a realistic central tracking system. Events from interesting physics processes at the SSC will be complex and will be further complicated by hits from out-of-time bunch crossings and multiple interactions within the same bunch crossing. Detailed computer simulations are needed to demonstrate that the pattern recognition and tracking problems can be solved.

Cassel, D.G.; Hanson, G.G.

1986-10-01

8

D0 central tracking chamber performance studies  

SciTech Connect

The performance of the completed DO central tracking chamber was studied using cosmic rays at the State University of New York at Stony Brook. Also studied was a prototype tracking chamber identical in design to the completed DO tracking chamber. The prototype chamber was exposed to a collimated beam of 150 GeV pions at the Fermilab NWA test facility. Results indicate an R{Phi} tracking resolution compatible with the limitations imposed by physical considerations, excellent 2 track resolution, and a high track reconstruction efficiency along with a good rejection power against {gamma} {yields} e {sup +} e{sup {minus}} events.

Pizzuto, D.

1991-12-01

9

ZEUS hardware control system  

Microsoft Academic Search

The ZEUS collaboration is building a system to monitor, control and document the hardware of the ZEUS detector. This system is based on a network of VAX computers and microprocessors connected via ethernet. The database for the hardware values will be ADAMO tables; the ethernet connection will be DECNET, TCP\\/IP, or RPC. Most of the documentation will also be kept

R. Loveless; P. Erhard; J. Ficenec; K. Gather; G. Heath; M. Iacovacci; J. Kehres; M. Mobayyen; D. Notz; R. Orr; A. Sephton; R. Stroili; K. Tokushuku; W. Vogel; J. Whitmore; L. Wiggers

1989-01-01

10

The level 1 central tracking trigger for the DØ upgrade  

Microsoft Academic Search

The DØ level 1 tracking trigger uses data from the scintillating fiber tracker, the central and forward preshower detectors, the muon system and the calorimeter. Tracks are found in the scintillating fiber tracker with transverse momentum greater than 1.5 GeV\\/c. The tracks are matched with hits in the central preshower detector and the muon system for electron and muon tagging.

F. Borcherding; S. Grunendahl; M. Johnson; K. Yip

1999-01-01

11

The level 1 central tracking trigger for the DØ upgrade  

Microsoft Academic Search

The DØ level 1 tracking trigger uses data from the scintillating fiber tracker, the central and forward preshower detectors, the muon system and the calorimeter. Tracks are found in the scintillating fiber tracker with transverse momentum greater than 1.5 GeV\\/c. The tracks are matched with hits in the central preshower detector and the muon system for electron and muon tagging.

F. Borcherding; S. Grunendahl; M. Johnson; K. Yip

2000-01-01

12

Highlights from ZEUS  

E-print Network

Highlights from the ZEUS experiment at HERA as of the DIS06 conference in April are shown. New results focus on measurements from the HERA II running period of inclusive DIS at high momentum transfer using polarised leptons and on their impact in combined QCD and electroweak fits. Investigation of the hadronic final state, both for inclusive and diffractive reactions, continues to challenge theory. These are discussed as well as some previously unmeasured hadronic final states.

M. Wing

2006-06-30

13

Performance measurement of the upgraded D0 central track trigger  

SciTech Connect

The D0 experiment was upgraded in spring 2006 to harvest the full physics potential of the Tevatron accelerator at Fermi National Accelerator Laboratory, Batavia, Illinois, USA. It is expected that the peak luminosity delivered by the accelerator will increase to over 300 x 10{sup 30} cm{sup -2} s{sup -1}. One of the upgraded systems is the Central Track Trigger (CTT). The CTT uses the Central Fiber Tracker (CFT) and Preshower detectors to identify central tracks with p{sub T} > 1.5GeV at the first trigger level. Track candidates are formed by comparing fiber hits to predefined track equations. In order to minimize latency, this operation is performed in parallel using combinatorial logic implemented in FPGAs. Limited hardware resources prevented the use of the full granularity of the CFT. This leads to a high fake track rate as the occupancy increases. In order to mitigate the problem, new track-finding hardware was designed and commissioned. We report on the upgrade and the improved performance of the CTT system.

Mommsen, Remigius, K.; /Manchester U. /Fermilab

2006-12-01

14

ZEUS results on large rapidityZEUS results on large rapidity gap events in NC and CC DISgap events in NC and CC DIS  

E-print Network

ZEUS results on large rapidityZEUS results on large rapidity gap events in NC and CC DISgap events fraction of the exchange carried by struck quark Relation x = xIP Large Rapidity Gap events #12;Motivation energy deposition in central detector Rapidity gap: at least 4-max

15

A central neural pathway controlling odor tracking in Drosophila.  

PubMed

Chemotaxis is important for the survival of most animals. How the brain translates sensory input into motor output beyond higher olfactory processing centers is largely unknown. We describe a group of excitatory neurons, termed Odd neurons, which are important for Drosophila larval chemotaxis. Odd neurons receive synaptic input from projection neurons in the calyx of the mushroom body and project axons to the central brain. Functional imaging shows that some of the Odd neurons respond to odor. Larvae in which Odd neurons are silenced are less efficient at odor tracking than controls and sample the odor space more frequently. Larvae in which the excitability of Odd neurons is increased are better at odor intensity discrimination and odor tracking. Thus, the Odd neurons represent a distinct pathway that regulates the sensitivity of the olfactory system to odor concentrations, demonstrating that efficient chemotaxis depends on processing of odor strength downstream of higher olfactory centers. PMID:25653345

Slater, Gemma; Levy, Peter; Chan, K L Andrew; Larsen, Camilla

2015-02-01

16

A Central Neural Pathway Controlling Odor Tracking in Drosophila  

PubMed Central

Chemotaxis is important for the survival of most animals. How the brain translates sensory input into motor output beyond higher olfactory processing centers is largely unknown. We describe a group of excitatory neurons, termed Odd neurons, which are important for Drosophila larval chemotaxis. Odd neurons receive synaptic input from projection neurons in the calyx of the mushroom body and project axons to the central brain. Functional imaging shows that some of the Odd neurons respond to odor. Larvae in which Odd neurons are silenced are less efficient at odor tracking than controls and sample the odor space more frequently. Larvae in which the excitability of Odd neurons is increased are better at odor intensity discrimination and odor tracking. Thus, the Odd neurons represent a distinct pathway that regulates the sensitivity of the olfactory system to odor concentrations, demonstrating that efficient chemotaxis depends on processing of odor strength downstream of higher olfactory centers. PMID:25653345

Slater, Gemma; Levy, Peter; Chan, K.L. Andrew

2015-01-01

17

Identifying and Tracking of Peripheral and Central Umbral Dots  

NASA Astrophysics Data System (ADS)

Umbral dots (UDs) are small isolated brightening observed in sunspot umbrae. They are usually classified into peripheral UDs (PUDs) and central UDs (CUDs) according to their positions inside an umbra. To accurately investigate the similarities and the distinctions between PUDs and CUDs and better understand their formation mechanisms, we propose a method for identifying and tracking PUDs and CUDs. Firstly, the umbra-penumbra boundary was detected based on morphological reconstruction. Secondly, the UDs were identified and tracked based on phase congruency. Finally, the UDs were classified into PUDs and CUDs with a new definition of the periphery and the center of an umbra. A data set obtained with the Hinode/Solar Optical Telescope on 2 March 2007 was used to illustrate the procedures. The statistical properties of PUDs and CUDs, including equivalent diameters, ratio of the maximum intensity to the mean photosphere intensity, horizontal velocities, lifetimes, and trajectories were investigated to evaluate the performance of the method.

Feng, Song; Zhao, Yan; Yang, Yunfei; Ji, Kaifan; Deng, Hui; Wang, Feng

2015-04-01

18

The central track trigger of the DO experiment  

E-print Network

with different sizes and numbers of field programmable gate arrays (FPGAs). A more detailed description of the structure and function of the DFE boards can be found in [14] and references therein. The MIXER is used to map the AFE outputs (cylinder layer geometry.... The format of the data sent from the L2 preprocessors to L2 Global includesa headerspecifying the format,length of header HU et al.: THE CENTRAL TRACK TRIGGER OF THE DØ EXPERIMENT 2371 Fig. 5. The efficiency of L1 CTT trigger term TTK(2, 3), the horizontal...

Wilson, Graham Wallace; Yip, K.; Xu, Q.; Olsen, J.; Wilcer, N.; Wijnen, T.; Vachon, B.; Tomoto, M.; Stevenson, K.; Rapisarda, S.; Ramirez-Gomez, R.

2004-10-01

19

Structure Function Results from ZEUS  

E-print Network

This contribution presents recent ZEUS results on proton structure functions at HERA. The inclusive phi(1020)-meson cross section was measured, and it was used to determine the s-quark content of the proton. The structure function F_2 was extracted using initial-state radiative events. Neutral and charged current cross sections were used to extract the structure function xF_3 and measure the mass of the W boson, respectively. A NLO QCD fit to ZEUS data and fixed target cross sections was employed to determine the parton density functions of the quarks and of the gluon inside the proton.

A. Kappes

2002-10-14

20

Electromagnetically tracked placement of a peripherally inserted central catheter  

NASA Astrophysics Data System (ADS)

This paper describes a computer program to utilize electromagnetic tracking guidance during insertion of peripherally inserted central catheters. Placement of a Peripherally Inserted Central Catheter (PICC) line is a relatively simple, routine procedure in which a catheter is inserted into the veins of the lower arm and threaded up the arm to the vena cava to sit just above the heart. However, the procedure requires x-ray verification of the catheter position and is usually done under continuous fluoroscopic guidance. The computer program is designed to replace fluoroscopic guidance in this procedure and make PICC line placement a bedside procedure. This would greatly reduce the time and resources dedicated to this procedure. The physician first goes through a quick registration procedure to register the patient space with the computer screen coordinates. Once registration is completed, the program provides a continuous, real-time display of the position of the catheter tip overlaid on an x-ray image of the patient on an adjacent computer screen. Both the position and orientation of the catheter tip is shown. The display is very similar to that shown when using fluoroscopy.

Sacolick, Laura; Patel, Neilesh; Tang, Jonathan; Levy, Elliot; Cleary, Kevin R.

2004-05-01

21

Opt out of Centralized Management of Licensure and Certification tracking by Human Resources.  

E-print Network

Opt out of Centralized Management of Licensure and Certification tracking by Human Resources. Send completed form to: Human Resources Mail code 8912 Attn. Deanna Syrek We, the undersigned, declare that (Dept.)_________________________, wish to opt out of the Centralized Management of Licensure and Certification tracking by Human

Squire, Larry R.

22

The level 1 central tracking trigger for the D-Zero upgrade  

Microsoft Academic Search

The D0 level 1 tracking trigger uses data from the scintillating fiber tracker, the central and forward preshower detectors, the muon system and the calorimeter. Tracks are found in the scintillating fiber tracker with transverse momentum greater than 1.5 GeV\\/c. The tracks are then sent to the central preshower detector for electron tagging and to the muon system for muon

F. Borcherding; S. Grunendahl; M. Johnson; K. Yip

1999-01-01

23

Tracking Crustal Thickness Changes During Central Andean Deformation  

NASA Astrophysics Data System (ADS)

New broadband seismic data from Bolivia and Peru constrain the depth to Moho for the northern Altiplano (AP) and central Andean fold-thrust belt. Combined with improved kinematic constraints on deformation at the central Andean orocline, we are now able to compare the modern crustal distribution to that predicted by the central Andean displacement field. At the first order, the crust beneath the Eastern Cordillera (EC) in northern Bolivia is substantially thinner (~50 - 60km) than in southern Bolivia (?70km) but shortening magnitudes are broadly similar across the orocline (North: 276 km, 300 km; Central: 313 km; South: 326 km). This may suggest that part of the lower crust in northern Bolivia has been either transferred along or across strike or has been removed via processes such as delamination. We evaluate these possibilities using a map-view reconstruction constrained by shortening estimates and paleomagnetic rotation data to forward-model predicted crustal thicknesses. Two end-member models were produced assuming 35 km and 40 km thick pre-Andean crust. We divide our analyses of crustal thickness into three sections (north, central, and south) for the AP, EC, Interandean (IA), and Subandean (SA) zones and took into account the effects of sedimentation and erosion. The predicted volume for each zone is then calculated based on the map-view extent of the section. Results are normalized to the modern crustal volume, calculated in each section's equivalent map-view area. Accounting for approximately 10 km of sedimentation and measured AP shortening, the predicted AP crustal volume is within 10% of the modern volume (predicted crustal thickness = 50-60km). The south EC predicted crustal volumes are initially insufficient (15-20 km thickness deficit). However, additional crustal thickening driven by later shortening in the IA and SA and subsequent under-thrusting of the Brazilian shield can account for a 60-80km EC thick crust (70 km modern thickness). The central section is similar, where the predicted EC volume is less than the modern volume but additional IA and SA shortening accounts for a 70-80km thick EC indicating <10km excess thickness. The northern section is significantly different; the predicted crustal volume for all three zones meets or exceeds the observed volumes. This is a function of the new seismic data that constrains the northern crust below the EC to be ~10-15 km thinner than to the south. The accumulation of excess volume during EC, IA, and SA shortening predicts a ~75-90km EC crust, exceeding modern EC thickness by ~15-30km. If the excess volume were uniformly distributed across the northern EC and AP, it would correspond to a modern thickness of ~65-75km, comparable to the seismically constrained crustal thicknesses in southern Bolivia and southern Peru. While it is possible that excess material may have migrated from northern EC in Bolivia to southern Peru, the highly localized region of thin EC crust imaged by broadband seismic data argues for a more localized removal mechanism than crustal flow. This implies that the northern central Andes may have experienced delamination of at least 10-20 km of lower crust from below the EC.

Eichelberger, N. W.; Karimi, B.; McQuarrie, N.; Ryan, J. C.; Beck, S. L.; Zandt, G.

2013-12-01

24

Natural recovery of steppe vegetation on vehicle tracks in central Mongolia.  

PubMed

Steppe desertification due to vehicle travel is a severe environmental issue in Mongolia. We studied natural vegetation recovery on abandoned vehicle tracks in the central Mongolia steppe through vegetation surveys and stable isotopic techniques. The following issues were addressed: (i) invasion of pioneering plant species, (ii) alteration of soil surface features, and (iii) contribution of revegetated plants to soil organic matter (SOM). The pioneering plant species that firstly invaded the abandoned tracks are those that could germinate, root and survive in the compacted track surface. Salsola collina is one of these candidate plants. Due to revegetation, soil surface hardness was reduced. With the improvement of surface microenvironmental conditions, other plants began to colonize and establish; con-comitantly species richness and species diversity increased. Carbon isotope ratios of SOM at the top surface layer indicated that C4 -derived carbon contributed more to SOM in the early phase of recovery and decreased with further recovery. PMID:16595879

Li, Sheng-Gong; Tsujimura, Maki; Sugimoto, Atsuko; Davaa, Gombo; Sugita, Michiaki

2006-03-01

25

Charm spectroscopy and exotics at ZEUS  

E-print Network

Light and charmed hadrons are produced copiously in ep collisions with a centre-of-mass energy of 318 GeV at HERA. Results of the ZEUS Collaboration on pentaquark searches, deuteron and antideuteron production and charmed-meson spectroscopy, obtained using the HERA I data, are summarised.

Leonid Gladilin

2006-11-03

26

A QCD analysis of ZEUS diffractive data  

NASA Astrophysics Data System (ADS)

ZEUS inclusive diffractive-cross-section measurements have been used in a DGLAP next-to-leading-order QCD analysis to extract the diffractive parton distribution functions. Data on diffractive dijet production in deep inelastic scattering have also been included to constrain the gluon density. Predictions based on the extracted parton densities are compared to diffractive charm and dijet photoproduction data.

Chekanov, S.; Derrick, M.; Magill, S.; Musgrave, B.; Nicholass, D.; Repond, J.; Yoshida, R.; Mattingly, M. C. K.; Antonioli, P.; Bari, G.; Bellagamba, L.; Boscherini, D.; Bruni, A.; Bruni, G.; Cindolo, F.; Corradi, M.; Iacobucci, G.; Margotti, A.; Nania, R.; Polini, A.; Antonelli, S.; Basile, M.; Bindi, M.; Cifarelli, L.; Contin, A.; De Pasquale, S.; Sartorelli, G.; Zichichi, A.; Bartsch, D.; Brock, I.; Hartmann, H.; Hilger, E.; Jakob, H.-P.; Jüngst, M.; Nuncio-Quiroz, A. E.; Paul, E.; Samson, U.; Schönberg, V.; Shehzadi, R.; Wlasenko, M.; Morris, J. D.; Kaur, M.; Kaur, P.; Singh, I.; Capua, M.; Fazio, S.; Mastroberardino, A.; Schioppa, M.; Susinno, G.; Tassi, E.; Kim, J. Y.; Ibrahim, Z. A.; Idris, F. Mohamad; Kamaluddin, B.; Wan Abdullah, W. A. T.; Ning, Y.; Ren, Z.; Sciulli, F.; Chwastowski, J.; Eskreys, A.; Figiel, J.; Galas, A.; Olkiewicz, K.; Pawlik, B.; Stopa, P.; Zawiejski, L.; Adamczyk, L.; Bo?d, T.; Grabowska-Bo?d, I.; Kisielewska, D.; ?ukasik, J.; Przybycie?, M.; Suszycki, L.; Kota?ski, A.; S?omi?ski, W.; Bachynska, O.; Behnke, O.; Behr, J.; Behrens, U.; Blohm, C.; Borras, K.; Bot, D.; Ciesielski, R.; Coppola, N.; Fang, S.; Geiser, A.; Göttlicher, P.; Grebenyuk, J.; Gregor, I.; Haas, T.; Hain, W.; Hüttmann, A.; Januschek, F.; Kahle, B.; Katkov, I. I.; Klein, U.; Kötz, U.; Kowalski, H.; Libov, V.; Lisovyi, M.; Lobodzinska, E.; Löhr, B.; Mankel, R.; Melzer-Pellmann, I.-A.; Miglioranzi, S.; Montanari, A.; Namsoo, T.; Notz, D.; Parenti, A.; Raval, A.; Roloff, P.; Rubinsky, I.; Schneekloth, U.; Spiridonov, A.; Szuba, D.; Szuba, J.; Theedt, T.; Tomaszewska, J.; Verbytskyi, A.; Wolf, G.; Wrona, K.; Yagües-Molina, A. G.; Youngman, C.; Zeuner, W.; Drugakov, V.; Lohmann, W.; Schlenstedt, S.; Barbagli, G.; Gallo, E.; Pelfer, P. G.; Bamberger, A.; Dobur, D.; Karstens, F.; Vlasov, N. N.; Bussey, P. J.; Doyle, A. T.; Forrest, M.; Saxon, D. H.; Skillicorn, I. O.; Gialas, I.; Papageorgiu, K.; Holm, U.; Klanner, R.; Lohrmann, E.; Perrey, H.; Schleper, P.; Schörner-Sadenius, T.; Sztuk, J.; Stadie, H.; Turcato, M.; Long, K. R.; Tapper, A. D.; Matsumoto, T.; Nagano, K.; Tokushuku, K.; Yamada, S.; Yamazaki, Y.; Barakbaev, A. N.; Boos, E. G.; Pokrovskiy, N. S.; Zhautykov, B. O.; Aushev, V.; Borodin, M.; Kadenko, I.; Korol, Ie.; Kuprash, O.; Lontkovskyi, D.; Makarenko, I.; Onishchuk, Yu.; Salii, A.; Sorokin, Iu.; Viazlo, V.; Volynets, O.; Zenaiev, O.; Zolko, M.; Son, D.; de Favereau, J.; Piotrzkowski, K.; Barreiro, F.; Glasman, C.; Jimenez, M.; del Peso, J.; Ron, E.; Terrón, J.; Uribe-Estrada, C.; Corriveau, F.; Schwartz, J.; Zhou, C.; Tsurugai, T.; Antonov, A.; Dolgoshein, B. A.; Gladkov, D.; Sosnovtsev, V.; Stifutkin, A.; Suchkov, S.; Dementiev, R. K.; Ermolov, P. F.; Gladilin, L. K.; Golubkov, Yu. A.; Khein, L. A.; Korzhavina, I. A.; Kuzmin, V. A.; Levchenko, B. B.; Lukina, O. Yu.; Proskuryakov, A. S.; Shcheglova, L. M.; Zotkin, D. S.; Abt, I.; Caldwell, A.; Kollar, D.; Reisert, B.; Schmidke, W. B.; Grigorescu, G.; Keramidas, A.; Koffeman, E.; Kooijman, P.; Pellegrino, A.; Tiecke, H.; Vázquez, M.; Wiggers, L.; Brümmer, N.; Bylsma, B.; Durkin, L. S.; Lee, A.; Ling, T. Y.; Cooper-Sarkar, A. M.; Devenish, R. C. E.; Ferrando, J.; Foster, B.; Gwenlan, C.; Horton, K.; Oliver, K.; Robertson, A.; Walczak, R.; Bertolin, A.; Dal Corso, F.; Dusini, S.; Longhin, A.; Stanco, L.; Brugnera, R.; Carlin, R.; Garfagnini, A.; Limentani, S.; Oh, B. Y.; Whitmore, J. J.; Iga, Y.; D'Agostini, G.; Marini, G.; Nigro, A.; Hart, J. C.; Abramowicz, H.; Ingbir, R.; Kananov, S.; Levy, A.; Stern, A.; Ishitsuka, M.; Kanno, T.; Kuze, M.; Maeda, J.; Hori, R.; Okazaki, N.; Shimizu, S.; Hamatsu, R.; Kitamura, S.; Ota, O.; Ri, Y. D.; Costa, M.; Ferrero, M. I.; Monaco, V.; Sacchi, R.; Sola, V.; Solano, A.; Arneodo, M.; Ruspa, M.; Fourletov, S.; Martin, J. F.; Stewart, T. P.; Boutle, S. K.; Butterworth, J. M.; Jones, T. W.; Loizides, J. H.; Wing, M.; Brzozowska, B.; Ciborowski, J.; Grzelak, G.; Kulinski, P.; ?u?niak, P.; Malka, J.; Nowak, R. J.; Pawlak, J. M.; Perlanski, W.; ?arnecki, A. F.; Adamus, M.; Plucinski, P.; Tymieniecka, T.; Eisenberg, Y.; Hochman, D.; Karshon, U.; Brownson, E.; Reeder, D. D.; Savin, A. A.; Smith, W. H.; Wolfe, H.; Bhadra, S.; Catterall, C. D.; Hartner, G.; Noor, U.; Whyte, J.; ZEUS Collaboration

2010-05-01

27

Environmental permit tracking and compliance: Central Artery/Tunnel Project, Boston, MA  

SciTech Connect

The Central Artery/Tunnel (CA/T) Project in Boston, Massachusetts involves the replacement of the existing I-93 interstate highway (Central Artery) and the extension of I-90 (Massachusetts Turnpike) to Logan International Airport. To date, approximately 95 environmental and related permits have been obtained for the CA/T Project. At least 200 permits from federal, state and local regulatory agencies will be acquired for the entire Project. The proposed action includes construction activities and permanent structures related to the crossing of three bodies of water: Charles River, Fort Point Channel, and Boston Inner Harbor. The Project also includes work in Massachusetts filled tidelands, relocation or construction of outfalls, disposition of construction dewatering and tunnel drainage fluids, and capping of an abandoned landfill. The number of permits, interrelationships between permits and interfaces with design and construction schedules have necessitated the development and implementation of a permit tracking system. The system tracks permit applications from preparation through public and agency review to permit issuance. The issues are discussed in detail: Phased development of the tracking system; Utilization of Project standard scheduling system software, Primavera Project Planner; How the information generated by the tracking system is used at the Project; Report format and production; Construction phase services and the multidiscipline, integrated Project schedule.

Forbush, L. (BSC Group, Boston, MA (United States))

1993-01-01

28

Natural recovery of steppe vegetation on vehicle tracks in central Mongolia  

Microsoft Academic Search

Steppe desertification due to vehicle travel is a severe environmental issue in Mongolia. We studied natural vegetation recovery\\u000a on abandoned vehicle tracks in the central Mongolia steppe through vegetation surveys and stable isotopic techniques. The\\u000a following issues were addressed: (i) invasion of pioneering plant species, (ii) alteration of soil surface features, and (iii)\\u000a contribution of revegetated plants to soil organic

Sheng-Gong Li; Maki Tsujimura; Atsuko Sugimoto; Gombo Davaa; Michiaki Sugita

2006-01-01

29

Dinosaur tracks from the Jurassic Shemshak Group in the Central Alborz Mountains (Northern Iran)  

NASA Astrophysics Data System (ADS)

The Shemshak Group includes alternating layers of coal-bearing shale and siliciclastic sediments in the Baladeh area in the central Alborz Mountains of northern Iran. A diverse and abundant Jurassic dinosaur footprint assemblage is now recognized in the group, which is Toarcian to Bajocian in age in the northern Baladeh. This is the first report of a diverse dinosaur ichnoassemblage from Iran that includes the footprints of sauropods. These tracks can be assigned to three groups of trackmakers: theropods, ornithopods and sauropods. Those of theropods are typically tridactyl in shape, their trackways reflecting bipedal movement. Theropod footprints are very abundant in both northern and western Baladeh. The studied theropod tracks themselves are divided into three major dimensional groups. The medium sized footprints (footprint length, 11-15 cm) are abundant and have a stride length, digit and pace angles like the coelurosaurs footprints and trackway. Theropod footprints were identified as similar to Schizograllator otariensis, Talmontopus tersi and Wildeichnus isp. Ornithopod footprints are tridactyl with rounded and thick toes and belong to bipeds. Some didactyl imprints were also observed. Skin imprints were well preserved in these footprints. The ornithopod tracks resemble Jiayinosorupus johnsoni, as well as Velociraptorichnus sichuanensis for didactyl footprints. Sauropod footprints found in the western part of Baladeh are assigned here to Eosauropus isp., which are pentadactyl pes imprints of a quadruped. The assemblage from Iran resembles similar associations from eastern Asia.

Abbassi, Nasrollah; Madanipour, Saeed

2014-04-01

30

Diffraction at H1 and Zeus  

E-print Network

The H1 and Zeus collaborations have measured the inclusive diffractive DIS cross section ep -> eXp and these measurements are in good agreement within a normalisation uncertainty. Diffractive parton density functions (DPDFs) have been extracted from NLO QCD fits to these data and the predictions of these DPDFs compare well with measurements of diffractive dijets in DIS, proving the validity of the factorisation approximations used in their extraction. The inclusive and dijet data are then used in a combined fit to constrain the diffractive singlet and gluon with good precision over the full phase space. The predictions of DPDFs are compared to diffractive dijets in photoproduction where the issue of survival probability in a hadron-hadron environment can be studied. Finally, exclusive diffractive vector meson production and deeply virtual Compton scattering have also been studied; the results compare reasonably well with the expectations of QCD and in particular with GPD models.

Paul Laycock

2009-06-08

31

Track reconstruction with a central two-shell scintillating fibre tracker (SFT)  

Microsoft Academic Search

We present a track reconstruction algorithm designed for the scintillating fibre tracker (SFT), having in view the upgrade of the L3 detector for LEP-II. This algorithm can also be applied for particle tracking at future hadron colliders. The tracking elements are polystyrene fibres of 60 mum diameter, which are arranged as fused coherent bundles into fibre layers. We study in

F. Anselmo; F. Block; Luisa Cifarelli; C. D'Ambrosio; Thierry Gys; G. La Commare; H. Leutz; M. Marino; S. Qian

1994-01-01

32

Interactive monitoring system for backing calorimeter at ZEUS experiment  

NASA Astrophysics Data System (ADS)

This work describes a design and development of the Internet system for the data quality monitoring during the Backing Calorimeter (BAC) operation in the ZEUS experiment and for the archive data analysis. The development includes functional data base system application, data interaction processes and the web interface, built using PHP scripts and JAVA applets. The system implementation process, in ZEUS experiment, was described and its performance results were presented, based on the selected examples.

Pozniak, Krzysztof T.; Romaniuk, Ryszard S.; Jezynski, Tomasz; Luszczak, Zbigniew; Zaczek, Michal

2004-07-01

33

Calorimetry in ZEUS: Lessons for the future  

SciTech Connect

The storage ring facility HERA, under construction at the DESY Laboratory, will collide 30 GeV e/sup /minus// with 820 GeV protons when the machine is first turned on in 1990. Four interaction regions being provided. Subsequently either e/sup /minus// or e beams can be used and a facility for producing longitudinal polarization of the electrons at the interaction points will be provided. Both the center-of-mass energy ( s = 314 GeV) and the momentum transfer (Q/sub max/S /approximately/ 10V GeVS) are substantially higher than in any deep inelastic scattering studies to date. The HERA program will be the natural extension of both the neutrino and the muon scattering experiments done at CERN and Fermilab. With the design luminosity of 1.5 10T cm/sup /minus/2/ sec/sup /minus/1/ experiments with 200 pb/sup /minus/1/ of integrated luminosity will be possible. HERA will be the first electron-quark collider. The energy is substantially higher than LEP, and the events will be cleaner than those resulting from p/bar p/ collisions. It provides the third leg that will support the physics stool of the 1990s. In neutral current events, the z exchange graph is comparable in strength to the photon exchange and the charged current events will provide unique insights into the W coupling. There will be substantial rates of heavy quark production. Two detectors are under construction: H1 uses a large solenoid with a liquid argon calorimeter inside the coil, ZEUS uses a smaller magnet with uranium-scintillator calorimeters outside of the coil. 4 refs., 11 figs.

Derrick, M.

1988-01-01

34

[Use of the Zeus robotic surgical system for cardiac surgery].  

PubMed

The development of closed chest cardiopulmonary bypass systems has opened the door for totally endoscopic cardiac surgery. We used the robotic surgical system ZEUS for closure of the atrial septal defect (ASD) in three patients. Under one-lung ventilation, Port-Access cardiopulmonary bypass system of the drainage from the right internal jugular vein and the the right femoral vein and the return to the right femoral artery was started after port placement at the forth intercostal space of the right thoracic wall. ASD direct closure was achieved by using robotic surgical system ZEUS under cardiac arrest. The three patients were discharged in 7 days after the operation uneventfully. The robotic surgical system ZEUS can make cardiac surgeries less invasive than ever. PMID:15565905

Sawa, Yoshiki; Monta, Osamu; Matsuda, Hikaru

2004-11-01

35

Prompt Photons in Photoproduction using the ZEUS detector at HERA  

E-print Network

Prompt Photons in Photoproduction using the ZEUS detector at HERA Joanna Hamilton McKenzie Dept for the degree of Doctor of Philosophy c # Joanna Hamilton McKenzie, July 2005 #12; Abstract Measurements have. Comparisons are also made to a suggested new method which relies on the Barrel Presampler to remove background

Glasgow, University of

36

The Zeus Mission Study — An application of automated collaborative design  

Microsoft Academic Search

The purpose of the Zeus Mission Study was threefold. As an element of a graduate course in spacecraft system engineering, its purpose was primarily educational — to allow the students to apply their knowledge in a real mission study. The second purpose was to investigate the feasibility of applying advanced technology (the power antenna and solar electric propulsion concepts) to

Romain Doyotte; Stanley G. Love; Craig E. Peterson

1999-01-01

37

Impacts of Central Pacific and Eastern Pacific El Niños on tropical cyclone tracks over the western North Pacific  

NASA Astrophysics Data System (ADS)

This study examines the different impacts of two types of El Niños, the eastern Pacific El Niño (EP-EN) and the central Pacific El Niño (CP-EN), on tropical cyclone (TC) tracks over the western North Pacific (WNP) based on observational data. Whereas TC tracks between CP-EN and EP-EN show a small difference in boreal summer (JJA), they do exhibit a great difference in boreal autumn (SON), that is, TCs recurve northward at a further westward location near the coastline of East Asia during CP-EN. As a consequence, more TCs make landfall to Taiwan and South China during CP-EN. A further observational analysis indicates that the westward shift of the subtropical high and associated steering flow during CP-EN is a key factor that causes the difference in the TC tracks in autumn. Numerical experiments further suggest that the difference of local SST in the WNP between CP-EN and EP-EN accounts for the distinctive differences in the local Hadley circulation, the subtropical high and the TC steering flow.

Li, Y.; Hong, C.; Li, T.; Lee, M.

2011-12-01

38

Impacts of central Pacific and eastern Pacific El Niños on tropical cyclone tracks over the western North Pacific  

NASA Astrophysics Data System (ADS)

This study examines the different impacts of two types of El Niños, the eastern Pacific El Niño (EP-EN) and the central Pacific El Niño (CP-EN), on tropical cyclone (TC) tracks over the western North Pacific (WNP) based on observational data. Whereas TC tracks between CP-EN and EP-EN show a small difference in boreal summer (JJA), they do exhibit a great difference in boreal autumn (SON), that is, TCs recurve northward at a further westward location near the coastline of East Asia during CP-EN. As a consequence, more TCs make landfall to Taiwan and South China during CP-EN. A further observational analysis indicates that the westward shift of the subtropical high and associated steering flow during CP-EN is a key factor that causes the difference in the TC tracks in autumn. Numerical experiments further suggest that the difference of local SST in the WNP between CP-EN and EP-EN accounts for the distinctive differences in the local Hadley circulation, the subtropical high and the TC steering flow.

Hong, Chi-Cherng; Li, Yuan-Hsing; Li, Tim; Lee, Ming-Ying

2011-08-01

39

Diffusion tensor fiber tracking in patients with central post-stroke pain; correlation with efficacy of repetitive transcranial magnetic stimulation.  

PubMed

Central post-stroke pain (CPSP) is one of the most common types of intractable pain. We reported that repetitive transcranial magnetic stimulation (rTMS) of primary motor cortex relieves pain for patients who were refractory to medical treatment. But the mechanism is unclear. In the present study, we investigated relations between the characteristics of CPSP and the results of fiber tracking, which is the only noninvasive method of evaluating the anatomical connectivity of white matter pathways. Fiber tracking of the corticospinal tract (CST) and thalamocortical tract (TCT) was investigated in 17 patients with CPSP. The stroke lesion was located in a supratentorial region in all cases (corona radiata, one case; thalamus, seven cases; putamen, nine cases). Relations between the delineation ratio (defined as the ratio of the cross section of the affected side to that of the unaffected side) of the CST and of the TCT, manual muscle test score, pain score, region of pain, and efficacy of rTMS were evaluated. Fiber tracking was successful in 13 patients with the stroke lesion involving the TCT. The rTMS-effective group had higher delineation ratio of the CST (p=0.02) and the TCT (p=0.005) than the rTMS-ineffective group. Previous studies suggested that an intact CST allows pain control but did not discuss the TCT. Our results suggest that the TCT also plays a role in pain reduction by rTMS of the primary motor cortex and that the efficacy of rTMS for patients with CPSP is predictable by fiber tracking. PMID:19004554

Goto, Tetsu; Saitoh, Youichi; Hashimoto, Naoya; Hirata, Masayuki; Kishima, Haruhiko; Oshino, Satoru; Tani, Naoki; Hosomi, Koichi; Kakigi, Ryusuke; Yoshimine, Toshiki

2008-12-01

40

Loop Removal from Colon Central Path Through Skeleton Scale-Space Tracking  

Microsoft Academic Search

\\u000a The central path of the colon is an important tool in computer-assisted diagnosis: it is an aid to navigation during a virtual\\u000a colonoscopy and allows an easier follow-up of the patient pathologies. However the computation of this central path remains\\u000a a difficult task: on both MR and CT medical images, the wall of the colon is too thin with respect

Julien Lamy; Christian Ronse; Luc Soler

2005-01-01

41

Evolution Of The Coastal Margin Of Central Peru Through Fission-Track and (U-Th/He) Analysis  

NASA Astrophysics Data System (ADS)

The Coastal Batholith of Peru comprises granitoid bodies which range in age from 100-60 Ma and 50-20 Ma. It forms a well defined linear feature along the coastal margin. Low temperature geochronological methods such as fission-track and (U-Th)/He are best suited to reconstruct the later exhumation of the coastal margin. Factors such as variability in climate and in rock type are constrained reducing the number of parameters that might have an effect on erosion rates. The Coastal Batholith has been analyzed at several locations between Lima (Lat. 12° S) and Chala (Lat. 16° S) using fission-track (zircon and apatite) and (U-Th)/He dating methods. Modeling of the preliminary fission-track data set shows an almost identical thermal history for all locations North of San Juan (Lat. 15.30° S). Rapid exhumation in Late Eocene was followed by heating and renewed cooling during Oligocene time. The heating phase is interpreted as burial by Tertiary sediments, and the cooling, erosion of this sediment cover and the granite itself. An Early Miocene age (zircon fission-track age) of an ignimbrite stratigraphically just above the granites from the Nazca area (Lat. 15° S) shows that significant erosion of Eocene and Oligocene sediments had taken place in the coastal margin of central Peru, prior to the Early Miocene. Modeling further suggests that South of San Juan no significant amounts of sediment were deposited or eroded since the early Eocene. This southern region has been undergoing only simple long-term exhumation since as far back as Late Cretaceous. To explain these changes in age, which occur south of the leading edge of the subducting Nazca Ridge the geomorphology of the coastal area of central Peru was analyzed. Topographic cross sections perpendicular to the coast suggest an effect, caused by the collision with the ridge in the immediate on-land coastal areas. Over the area of the presently subducting ridge, a coast-parallel cross section shows an increase in altitude of approximately 500-1000 meters. No affect of the subducting Nazca Ridge is observable along the Western Cordillera further inland. The new fission-track ages can be interpreted in the terms of events that have affected the coastal region of Peru. These events disclosed through the apatite fission-track modeling are in agreement with those of Sebrier (1988), i.e. 45 to 40 Ma and 28-26 Ma. The zircon fission-track ages are thought to represent cooling ages of the Upper Cretaceous to Paleocene intrusions of the Coastal Batholith. This is the first time that such quantitative data has been available for this region. Remarkably, the region to the south of the ridge has been undergoing only long slow exhumation during the Late Cretaceous -Tertiary to Recent, uninterrupted by any events that have caused a reheating such as burial by sedimentation.

Wipf, M.; Harrison, D.; Seward, D.; Schlunegger, F.

2003-12-01

42

Climatic Atlas of Tropical Cyclone Tracks over the Central North Pacific  

E-print Network

Development and Tourism and NOAA/National Weather Service Central Pacific Hurricane Center, Honolulu April Development and Tourism for her gracious style in managing this project. This publication was funded of Planning, Department of Business, Economic Development, and Tourism. The views expressed herein are those

Hawai'i at Manoa, University of

43

The Zeus Copper/Uranium Critical Experiment at NCERC  

SciTech Connect

A critical experiment was performed to provide nuclear data in a non-thermal neutron spectrum and to reestablish experimental capability relevant to Stockpile Stewardship and Technical Nuclear Forensic programs. Irradiation foils were placed at specific locations in the Zeus all oralloy critical experiment to obtain fission ratios. These ratios were compared with others from other critical assemblies to assess the degree of softness in the neutron spectrum. This critical experiment was performed at the National Criticality Experiments Research Center (NCERC) in Nevada.

Sanchez, Rene G. [Los Alamos National Laboratory; Hayes, David K. [Los Alamos National Laboratory; Bounds, John Alan [Los Alamos National Laboratory; Jackman, Kevin R. [Los Alamos National Laboratory; Goda, Joetta M. [Los Alamos National Laboratory

2012-06-15

44

Search for CHARM pentaquarks in ZEUS at HERA  

SciTech Connect

Using the full 1996 - 2000 ZEUS data at HERA (121 pb-1) we have searched for the {theta}{sub c}{sup 0}(3100) pentaquark in the photoproduction and DIS regime. The search has yielded negative results. The 95% C.L. upper limits on the visible rate R({theta}{sub c}{sup 0} {yields} D*p/D*) is 0.23% (0.35% for DIS)

Eisenberg, Yehuda [Weizmann Institute of Science, Rehovot (Israel)

2006-02-11

45

Relative potentials of concentrating and two-axis tracking flat-plate photovoltaic arrays for central-station applications  

NASA Technical Reports Server (NTRS)

The purpose of this study is to assess the relative economic potentials of concenrating and two-axis tracking flat-plate photovoltaic arrays for central-station applications in the mid-1990's. Specific objectives of this study are to provide information on concentrator photovoltaic collector probabilistic price and efficiency levels to illustrate critical areas of R&D for concentrator cells and collectors, and to compare concentrator and flat-plate PV price and efficiency alternatives for several locations, based on their implied costs of energy. To deal with the uncertainties surrounding research and development activities in general, a probabilistic assessment of commercially achievable concentrator photovoltaic collector efficiencies and prices (at the factory loading dock) is performed. The results of this projection of concentrator photovoltaic technology are then compared with a previous flat-plate module price analysis (performed early in 1983). To focus this analysis on specific collector alternatives and their implied energy costs for different locations, similar two-axis tracking designs are assumed for both concentrator and flat-plate options.

Borden, C. S.; Schwartz, D. L.

1984-01-01

46

A new high-resolution central and western Saharan summertime dust source map from automated satellite dust plume tracking  

NASA Astrophysics Data System (ADS)

In this paper, we outline a new objective dust source detection method for the central and western Sahara (CWS), based on the automated tracking of individual dust plumes in data from the Spinning Enhanced Visible and Infrared Imager, available every 15 mins. at ~0.03° spatial resolution. The method is used to map the origin of summertime dust storms in the CWS for June - August 2004 - 2010. It reveals the sources of these events in unprecedented detail, allowing for the identification of specific, highly active source areas. The study of collocated surface features reveals that many of the dominant sources are likely associated with paleolakes and outwash plains, many in close proximity to the Saharan mountains. Extensive nonsource areas are associated with low albedo and elevated terrain, pointing to the mountainous regions of the Sahara. Additionally, sand seas are not identified as important source areas, but their margins sometimes are. The automated tracking method also facilitates analysis of the transport direction of dust plumes from key source regions and the inference of emission mechanisms. It is found that there are two broad domains within the CWS: one in southwest Algeria and northwest Mali, characterized primarily by transport toward the southwest and very likely dominated by low-level jets embedded in the northeasterly Harmattan winds; and a second in southern Algeria, northwest Niger, and northeast Mali where there is no preferred transport direction and a strong potential association between dust events and deep convection, pointing toward cold pool outflows as the likely deflation mechanism.

Ashpole, Ian; Washington, Richard

2013-07-01

47

Design and Test of a Forward Neutron Calorimeter for the ZEUS Experiment  

E-print Network

A lead scintillator sandwich sampling calorimeter has been installed in the HERA tunnel 105.6 m from the central ZEUS detector in the proton beam direction. It is designed to measure the energy and scattering angle of neutrons produced in charge exchange ep collisions. Before installation the calorimeter was tested and calibrated in the H6 beam at CERN where 120 GeV electrons, muons, pions and protons were made incident on the calorimeter. In addition, the spectrum of fast neutrons from charge exchange proton-lucite collisions was measured. The design and construction of the calorimeter is described, and the results of the CERN test reported. Special attention is paid to the measurement of shower position, shower width, and the separation of electromagnetic showers from hadronic showers. The overall energy scale as determined from the energy spectrum of charge exchange neutrons is compared to that obtained from direct beam hadrons.

The ZEUS FNC Group; S. Bhadra; I. Bohnet; M. Cardy; U. Dosselli; C. -P. Fagerstroem; W. Frisken; K. Furutani; D. Hanna; U. Holm; K. F. Johnson; M. Khakzad; G. Levman; J. N. Lim; B. Loehr; J. F. Martin; C. Muhl; T. Neumann; M. Rohde; W. B. Schmidke; D. G. Stairs; H. Tiecke; C. Voci

1997-01-27

48

Fission-track dating of bentonites and bentonitic mudstones from the Morrison Formation in central Utah  

SciTech Connect

Fission-track ages show that most of the Morrison Formation is Late Jurassic or perhaps earliest Cretaceous, ranging in age from 130 to 157 Ma. However, the upper part of the Morrison Formation in the Brushy Basin Member gives ages ranging from 99 to 123 Ma, covering a wide span of Early Cretaceous time. The bentonites dated are stratigraphically below what has been called the basal Buckhorn Conglomerate Member of the Cedar Mountain Formation. This may indicate that (1) the Buckhorn Conglomerate is not the base of the Cedar Mountain age sediments; (2) the Buckhorn Conglomerate has been misidentified in their section and is absent, in which case there would be no clear boundary between the Morrison and Cedar Mountain Formation; or (3) a significant part of the Brushy Basin member is Cretaceous in age and not Jurassic. These are not necessarily mutually exclusive, and it may be that a combination of these factors is true for their section. The long-term sediment accumulation rate calculated from the fission-track dates for the lower Brushy Basin, Salt Wash, and Tidwell Members of the Morrison Formation is about 6.2 m/m.y., whereas the long-term rate for the upper Brushy Basin Member is only about 0.6 m/m.y. However the change from relatively rapid to relatively slow sedimentation and subsidence occurs at about 140 Ma. This was about the time of a slowing of plate collision to the west and near the start of a gap in plutonic activity associated with the change in collision rates. Therefore, some of the change in sediment-accumulation rates in their section may be reflecting a reduction in the supply of ash and other sediment into the Morrison basin as a result of the changing tectonic regime to the west.

Kowallis, B.J.; Heaton, J.S.

1987-12-01

49

Using atmospheric chemistry and storm tracks to explain nitrate stable isotope variations in precipitation at a site in central Pennsylvania, USA  

Technology Transfer Automated Retrieval System (TEKTRAN)

Stable isotopes of NO3- (delta15N-NO3- and delta18O-NO3-) were monitored in precipitation at a central Pennsylvania site during six storm events in 2005 to determine whether information on atmospheric oxidants (e.g. O3, NO2, and NOx), and storm-tracks were capable of explaining observed seasonal and...

50

Joseph P. Wilson - Homer and the Will of Zeus - College Literature 34:2  

Microsoft Academic Search

This article demonstrates how Homer employs the trope of the Boule Dios (the will of Zeus) as a kind of shorthand for the poetic program. In essence, the will of Zeus is the plot of an epic poem, and the invention of a plot is the first job of the poet. The essay demonstrates how Homer (or the epic tradition)

Joe Wilson

2007-01-01

51

Diffraction at HERA M. Kapishin (on behalf of the H1 and ZEUS Collaborations)  

E-print Network

Diffraction at HERA M. Kapishin (on behalf of the H1 and ZEUS Collaborations) JINR, Joliot Curie 6 diffractive cross section and diffrac­ tive dijet production in deep­inelastic scattering, obtained by the H1 and ZEUS ex­ periments at HERA, are presented. The latest results on the exclusive diffractive production

52

QCD and EW analysis of the ZEUS NC/CC inclusive and jet cross sections  

E-print Network

from fits to measured cross sections. Fit to measured cross sections @ Q2 PDFs@ Q0 2 PDFs@ Q2 Wide without jets with jets #12;5 NEW! Fit including HERA II Now we measure polarized e-p NC/CC inclusive cross New fit: ZEUS-pol fit (preliminary) First fit including polarized cross sections! Data: ZEUS-JETS data

53

Flood-tracking chart for the Withlacoochee and Little River Basins in south-central Georgia and northern Florida  

USGS Publications Warehouse

The U.S. Geological Survey (USGS), in cooperation with other Federal, State, and local agencies, operates a flood-monitoring system in the Withlacoochee and Little River Basins. This system is a network of automated river stage stations (ten are shown on page 2 of this publication) that transmit stage data through satellite telemetry to the USGS in Atlanta, Georgia and the National Weather Service (NWS) in Peachtree City, Georgia. During floods, the public and emergency response agencies use this information to make decisions about road closures, evacuations, and other public safety issues. This Withlacoochee and Little River Basins flood-tracking chart can be used by local citizens and emergency response personnel to record the latest river stage and predicted flood-crest information along the Withlacoochee River, Little River, and Okapilco Creek in south-central Georgia and northern Florida. By comparing the current stage (water-surface level above a datum) and predicted flood crest to the recorded peak stages of previous floods, emergency response personnel and residents can make informed decisions concerning the threat to life and property.

Gotvald, Anthony J.; McCallum, Brian E.; Painter, Jaime A.

2014-01-01

54

Using Satellite Tracking to Optimize Protection of Long-Lived Marine Species: Olive Ridley Sea Turtle Conservation in Central Africa  

PubMed Central

Tractable conservation measures for long-lived species require the intersection between protection of biologically relevant life history stages and a socioeconomically feasible setting. To protect breeding adults, we require knowledge of animal movements, how movement relates to political boundaries, and our confidence in spatial analyses of movement. We used satellite tracking and a switching state-space model to determine the internesting movements of olive ridley sea turtles (Lepidochelys olivacea) (n?=?18) in Central Africa during two breeding seasons (2007-08, 2008-09). These movements were analyzed in relation to current park boundaries and a proposed transboundary park between Gabon and the Republic of Congo, both created to reduce unintentional bycatch of sea turtles in marine fisheries. We additionally determined confidence intervals surrounding home range calculations. Turtles remained largely within a 30 km radius from the original nesting site before departing for distant foraging grounds. Only 44.6 percent of high-density areas were found within the current park but the proposed transboundary park would incorporate 97.6 percent of high-density areas. Though tagged individuals originated in Gabon, turtles were found in Congolese waters during greater than half of the internesting period (53.7 percent), highlighting the need for international cooperation and offering scientific support for a proposed transboundary park. This is the first comprehensive study on the internesting movements of solitary nesting olive ridley sea turtles, and it suggests the opportunity for tractable conservation measures for female nesting olive ridleys at this and other solitary nesting sites around the world. We draw from our results a framework for cost-effective protection of long-lived species using satellite telemetry as a primary tool. PMID:21589942

Maxwell, Sara M.; Breed, Greg A.; Nickel, Barry A.; Makanga-Bahouna, Junior; Pemo-Makaya, Edgard; Parnell, Richard J.; Formia, Angela; Ngouessono, Solange; Godley, Brendan J.; Costa, Daniel P.; Witt, Matthew J.; Coyne, Michael S.

2011-01-01

55

Using satellite tracking to optimize protection of long-lived marine species: olive ridley sea turtle conservation in Central Africa.  

PubMed

Tractable conservation measures for long-lived species require the intersection between protection of biologically relevant life history stages and a socioeconomically feasible setting. To protect breeding adults, we require knowledge of animal movements, how movement relates to political boundaries, and our confidence in spatial analyses of movement. We used satellite tracking and a switching state-space model to determine the internesting movements of olive ridley sea turtles (Lepidochelys olivacea) (n?=?18) in Central Africa during two breeding seasons (2007-08, 2008-09). These movements were analyzed in relation to current park boundaries and a proposed transboundary park between Gabon and the Republic of Congo, both created to reduce unintentional bycatch of sea turtles in marine fisheries. We additionally determined confidence intervals surrounding home range calculations. Turtles remained largely within a 30 km radius from the original nesting site before departing for distant foraging grounds. Only 44.6 percent of high-density areas were found within the current park but the proposed transboundary park would incorporate 97.6 percent of high-density areas. Though tagged individuals originated in Gabon, turtles were found in Congolese waters during greater than half of the internesting period (53.7 percent), highlighting the need for international cooperation and offering scientific support for a proposed transboundary park. This is the first comprehensive study on the internesting movements of solitary nesting olive ridley sea turtles, and it suggests the opportunity for tractable conservation measures for female nesting olive ridleys at this and other solitary nesting sites around the world. We draw from our results a framework for cost-effective protection of long-lived species using satellite telemetry as a primary tool. PMID:21589942

Maxwell, Sara M; Breed, Greg A; Nickel, Barry A; Makanga-Bahouna, Junior; Pemo-Makaya, Edgard; Parnell, Richard J; Formia, Angela; Ngouessono, Solange; Godley, Brendan J; Costa, Daniel P; Witt, Matthew J; Coyne, Michael S

2011-01-01

56

Technical Observations on the Sculptures from the Temple of Zeus at Olympia  

E-print Network

HESPERIA 78 (2009) Pages 4r-tos TECHNICAL OBSERVATIONS ON THE SCULPTURES FROM THE TEMPLE OF ZEUS AT OLYMPIA ABSTRACT Technical observations on the sculptures from the Temple of Zeus at Olym- pia allow a reconstruction of their appearance... what has been especially the anonymous Hesperia reviewers, and by Aileen Ajootian, Judith Binder, Frederick Cooper, Evelyn B. Harrison, Kim J. Hartswick, Jeffrey Hurwit, Brunilde S. Ridgway, Ann Steiner, and Mary Sturgeon. I would also like to thank our...

Younger, John G.

2009-01-01

57

Using Satellite Tracking to Optimize Protection of Long-Lived Marine Species: Olive Ridley Sea Turtle Conservation in Central Africa  

Microsoft Academic Search

Tractable conservation measures for long-lived species require the intersection between protection of biologically relevant life history stages and a socioeconomically feasible setting. To protect breeding adults, we require knowledge of animal movements, how movement relates to political boundaries, and our confidence in spatial analyses of movement. We used satellite tracking and a switching state-space model to determine the internesting movements

Sara M. Maxwell; Greg A. Breed; Barry A. Nickel; Junior Makanga-Bahouna; Edgard Pemo-Makaya; Richard J. Parnell; Angela Formia; Solange Ngouessono; Brendan J. Godley; Daniel P. Costa; Matthew J. Witt; Michael S. Coyne; Yan Ropert-Coudert

2011-01-01

58

A Distributed Bronchial Mapping Software Tool for the Tracking of Cellular, Molecular and Imaging Results in the Central Airways  

E-print Network

Atlas tools including the Bronchial Map. Patient specimen data is annotated with a common set of dataA Distributed Bronchial Mapping Software Tool for the Tracking of Cellular, Molecular and Imaging The EDRN Biomarker Atlas Working Group recently has developed a Biomarker Atlas software system that allows

Mattmann, Chris

59

Apatite fission track thermochronometry from central Alberta: Implications for the thermal history of the Western Canada Sedimentary Basin  

NASA Astrophysics Data System (ADS)

Apatite separated from 47 Cretaceous and Tertiary drill core and surface samples from the foreland basin strata of the Western Canada Sedimentary Basin (WCSB) have been analyzed for their apatite fission track (AFT) age and confined track length distribution. Thermal histories of the fission track data were then estimated using a constrained random search inversion technique based on the Durango apatite annealing model. Most importantly, this technique provides an estimate of the peak postdepositional temperature experienced by each sample with error bounds determined by the precision of the fission track data. Most apatite samples retain at least some tracks that formed prior to the time of maximum Cenozoic burial, assumed to be coincident with maximun temperature. Seven apatite samples were fully annealed during burial, during or following the Laramide Orogeny, and provide a minimum age of 42 Ma for heating. Lower Cretaceous samples from near the deformation front were fully annealed and attained temperatures of at least 119-138 C during maximum bural. In contrast, stratigraphically equivalent smaples at the northeastern end of the transect near the Cold Lake heavy oil and tar sand deposits did not exceed 80 C. Paleogeothermal gradients calculated using bounded estimates of the peak temperatures experienced by the samples, together with maximum burial estimates from coal moisture studies, range from approximately 20 C/km near the deformation front to as high as 60 C/km near the cratonic edge of the basin. This variation has the same trend as present geothermal gradients, which range from approximately 30 C/km to 45 C/km, but indicates a greater constrast at the end of the Laramide. The results are consistent with the concept of heat transport by basinal scale fluid flow.

Ravenhurst, Casey E.; Willett, Sean D.; Donelick, Raymond A.; Beaumont, Christopher

1994-10-01

60

Fission track and fault kinematics analyses for new insight into the Late Cenozoic tectonic regime changes in West-Central Sulawesi (Indonesia)  

NASA Astrophysics Data System (ADS)

The left-lateral strike-slip Central Sulawesi Fault System (CSFS, composed of the NNW Palu-Koro (PKF) and the ESE Matano faults) is located within the eastern Indonesian triple junction between the Pacific, Indo-Australian and Eurasian plates. Fault kinematic and fission-track analyses show that the Late Cenozoic central Sulawesi deformation results from three successive tectonic regimes: (1) A Late Miocene-early Pliocene (5 Ma) WNW-trending shortening characterized by transpressional deformation along the PKF and compressional in the Poso area. This tectonics resulted from the collision between the Banggai-Sula block with Sulawesi. It produced locally a transpressional regime as a consequence of the northward extrusion of the Central Sulawesi block limited by the PKF. (2) A Pliocene collapse tectonic regime associated with W-trending extension. Coeval with these events regional cooling and exhumation took place. (3) A Quaternary transtensional regime resulting from the combined effects of the Central Sulawesi block northward motion, and extension related to back-arc spreading behind the North Sulawesi subduction (Tomini Gulf).

Bellier, Olivier; Sébrier, Michel; Seward, Diane; Beaudouin, Thierry; Villeneuve, Michel; Putranto, Eka

2006-02-01

61

Central aortic blood pressure from ultrasound wall-tracking of the carotid artery in children: comparison with invasive measurements and radial tonometry.  

PubMed

Differences between central aortic root (c) and peripheral (p) systolic blood pressure (SBP) may be particularly marked in children, but noninvasive methods for assessing cSBP in children have not been validated. We compared estimates of cSBP obtained from radiofrequency ultrasound wall tracking of the carotid artery (ART.LAB system) with that measured directly by a catheter in the aortic root at the time of arterial cannulation. Carotid waveforms were calibrated from invasive measurements of mean and diastolic pressures. In 9 children aged 10.5±5.0 years (mean±SD), cSBP obtained from carotid wall tracking was highly correlated with invasive measures of cSBP (r=0.99) with mean (±SD) difference 3.9±2.5 mm?Hg. Second, we compared values of cSBP obtained from the carotid with those obtained using noninvasive applanation tonometry at the radial artery and a radial-to-aortic transfer function (SphygmoCor). Both carotid and radial tonometric measurements were calibrated from the same peripheral mean and diastolic measurements of blood pressure obtained by sphygmomanometry. In 84 children aged 13.2±3.2 years, there was excellent agreement between the 2 methods (r=0.95; P<0.001) with mean difference 0.71±3.7 mm?Hg (95% confidence interval =-1.53 to 1.01). This invasive validation study confirms that cSBP as estimated by carotid wall tracking provides an acceptable measurement of true cSBP when calibration is from true mean and diastolic pressures. Close agreement of cSBP obtained by carotid wall tracking and radial tonometry suggests that these provide similar results when calibrated from the same peripheral blood pressure measurements. PMID:25824246

Milne, Laura; Keehn, Louise; Guilcher, Antoine; Reidy, John F; Karunanithy, Narayan; Rosenthal, Eric; Qureshi, Shakeel; Chowienczyk, Phil J; Sinha, Manish D

2015-05-01

62

ZEUS results on high Q^2 DIS cross sections and QCD fits  

E-print Network

Single and double differential cross sections ds/dQ^2, ds/dx, ds/dy and d^2s/dQ^2dx of the inclusive neutral current (NC) measurement from the 98/99 e^-p and the charged current (CC) measurement from the 99/00 e^+p data sets are presented. With the previously published e^+p NC ZEUS measurement xF_3 and xG_3, and with the e^-p CC ZEUS measurement F_2^CC are extracted. The results are compared to the prediction of the Standard Model using parton density functions of the ZEUS next-to-leading-order QCD analysis which is reviewed.

Julian Rautenberg

2003-08-29

63

ZEUS results on high Q^2 DIS cross sections and QCD fits  

Microsoft Academic Search

Single and double differential cross sections ds\\/dQ^2, ds\\/dx, ds\\/dy and d^2s\\/dQ^2dx of the inclusive neutral current (NC) measurement from the 98\\/99 e^-p and the charged current (CC) measurement from the 99\\/00 e^+p data sets are presented. With the previously published e^+p NC ZEUS measurement xF_3 and xG_3, and with the e^-p CC ZEUS measurement F_2^CC are extracted. The results are

Julian Rautenberg

2003-01-01

64

Using atmospheric chemistry and storm track information to explain the variation of nitrate stable isotopes in precipitation at a site in central Pennsylvania, USA  

NASA Astrophysics Data System (ADS)

Stable isotopes of NO 3- ( ?15N-NO 3- and ?18O-NO 3-) were monitored in precipitation at a central Pennsylvania site during six storm events in 2005 to determine whether information on atmospheric oxidants (e.g., O 3, NO 2, and NO x), and storm tracks (using the NOAA HYSPLIT model) were capable of explaining observed seasonal and within-storm isotopic variation. Results showed that ?15N-NO 3- and ?18O-NO 3- in precipitation varied significantly during individual storm events. Seasonally, ?15N-NO 3- and ?18O-NO 3- in precipitation followed a pattern of depletion during the summer months and enrichment during the winter months. NO 3- precursor concentrations and atmospheric oxidants were useful for explaining the seasonal and within-storm variation of ?15N-NO 3- for all six storm events as evidenced by negative relationships with NO 2:NO x ratios and ozone (O 3). In comparison, ?18O-NO 3- was positively related to O 3 in three dormant season storms, which suggested that the O 3 oxidation pathway was important for producing the high ?18O-NO 3- observed in wintertime precipitation. Storm track information was especially useful for describing differences in ?15N-NO 3-. Cool-sector storms originating from the E/NE produced slightly negative ?15N-NO 3- values characteristic of automobile emissions, whereas warm-sector storms with tracks from the SW/S/SE produced slightly positive ?15N-NO 3- values characteristic of coal-fired emissions. Lightning also may have been an important source of atmospheric NO 3- during two warm-sector thunderstorms. This study showed that (1) information about oxidant levels can be useful to predict the seasonal and within-storm variation of NO 3- stable isotopes in precipitation, and (2) knowledge of storm tracks (warm-sector versus cool-sector) may be important for determining sources of NO 3- in wet deposition.

Buda, Anthony R.; DeWalle, David R.

65

Takahiro Matsumoto / KEK On behalf of H1 and ZEUS collaborations  

E-print Network

: coalescence parameter 1/(freeze out volume) If B2 is same between particle and antiparticle 2 )/(/ ppddTakahiro Matsumoto / KEK On behalf of H1 and ZEUS collaborations Heavy stable particle production at HERA Measurement of Anti-Deuteron Photoproduction and a Search for Heavy Stable Charged Particles

66

ZEUS MVD LVCAN interface v1.0 May2002 LVCAN interface  

E-print Network

to the microprocessor controlling the ZEUS Microvertex Detector (MVD) Low Volt­ age System. In this note the CAN­module8591 ......................................................................... 5 2.1.3 Pin­to­pin is the ``LV board'', which provides power to 5 MVD modules (``LV channels''). Since each MVD module contains 8

67

Introducing ZEUS-MP: A 3D, Parallel, Multiphysics Code for Astrophysical Fluid Dynamics  

E-print Network

We describe ZEUS-MP: a Multi-Physics, Massively-Parallel, Message-Passing code for astrophysical fluid dynamics simulations in 3 dimensions. ZEUS-MP is a follow-on to the sequential ZEUS-2D and ZEUS-3D codes developed and disseminated by the Laboratory for Computational Astrophysics (lca.ncsa.uiuc.edu) at NCSA. V1.0 released 1/1/2000 includes the following physics modules: ideal hydrodynamics, ideal MHD, and self-gravity. Future releases will include flux-limited radiation diffusion, thermal heat conduction, two-temperature plasma, and heating and cooling functions. The covariant equations are cast on a moving Eulerian grid with Cartesian, cylindrical, and spherical polar coordinates currently supported. Parallelization is done by domain decomposition and implemented in F77 and MPI. The code is portable across a wide range of platforms from networks of workstations to massively parallel processors. Some parallel performance results are presented as well as an application to turbulent star formation.

Michael L. Norman

2000-05-05

68

David South (Technische Universitt Dortmund) on behalf of the H1 and ZEUS Collaborations  

E-print Network

Final combined HERA dataset ~ 1 fb-1 Data taking 1994 - 2007 Two multi-purpose experiments located with Isolated Leptons at HERA · Look for events with one or more isolated leptons in the final state as well, so the analysis benefits from the combination of the H1 and ZEUS data: full HERA data ~ 1 fb-1

69

Studies of hadron-electron separators for the ZEUS barrel calorimeter  

SciTech Connect

Two possible upgrades, a shower maximum detector and a presampler, designed to improve the low energy electron/hadron separation capabilities of the ZEUS barrel calorimeter are described and test-beam results are reported. The presampler can also be used to correct for energy loss of particles traversing the dead material in front of the calorimeter.

Ambats, I.; Bortz, D.; Connolly, A. [and others

1995-05-25

70

A Response to Zeus Leonardo's "Critical Empiricism: Reading Data with Social Theory"  

ERIC Educational Resources Information Center

In this article the author briefly brings up two related conceptual and political areas that Zeus Leonardo and the author might want to discuss further. These concern the status of the language of "resistance" and "agency," terms that play a large part in Leonardo's essay and that are now among the pantheon of accepted political and analytic…

Apple, Michael W.

2010-01-01

71

A.Savin Jets photoproduction from ZEUS 1/26 Alexander A. Savin  

E-print Network

with rapidity gap between jets (DESY-06-215) #12;A.Savin Jets photoproduction from ZEUS 3/26 Kinematics and Jets) Rapidity Gap Proton Remnant Photon Remnant Hard Scale e(k) e'(k') P(p) IP(t) (q) Rapidity Gap Proton Remnant Photon Remnant Hard Scale (Large t) Rapidity Gap Between Jets and Proton Remnant Rapidity Gap

72

Strange Pentaquark Search with ZEUS Zhenhai Ren (Columbia University)  

E-print Network

(2004) 7-22 #12;+ cross sections and ratios (+K0p / p) ! Q2 > 20GeV 2 ! PT ("+ ) > 0.5GeV,|#("+ ) | s & selection Data sample 121pb-1 DIS : Q2 > 1, 20 GeV2 Photo production (PHP) : Q2 space limited by cutting on track momentum dE/dx ­ energy loss due to ionization measured by CTD Band

73

New apatite fission-track data reflecting the landscape evolution using the example of the southeastern passive continental margin in Central Brazil  

NASA Astrophysics Data System (ADS)

Low-temperature thermochronolgy like AFT yield a well established tool to understand and reconstruct the rift to post-rift evolution of the passive continental margin in Brazil. The aim of the study is to quantify the temperature, exhumation, uplift, and long-term dynamic evolution of the topography of the southeastern passive continental margin in the states of Paraná and Santa Catarina (Central Brazil) along different transects. The working area shows the active evolution since the Early Cretaceous with altitudes up to 1400 m a.s.l and partly deep incised valleys. The first transect crosses the Ponta Grossa Arch with Devonian to Jurassic sediments in an NE-SW direction from the escarpment (Escarpa Devoniana) of the Serra Mantiquera in the NE to the escarpment in the SE built up of the overlying Early Cretaceous flood basalts of the Serra Urtigueira. The second transect drops down perpendicular to the coast where the eastern escarpment of the Serra Geral (up to 1400 m a.s.l) reaches nearly the coast. The highlands consist of Cretaceous flood basalts whereas the coastal lowlands constist of Precambrian metamorphic and intrusive rocks. Previous apatite fission-track data of the states of Parana and Santa Catarina provide ages between 144 (5) Ma (Gallgher et al., 1994) and 25 (1.8) Ma (Franco-Magalhaes, A.O.B., subm.) and show different post-rift reactivation from the Cretaceous to the Paleogene. But none of the studies indicate a clear relationship between age distribution and topography or age distribution and stratigraphic age. This study is based on samples taken along the transects within the working area. The results will provide new insigths into the evolution of the southeastern passive continental margin in Central Brazil concerning the thermal, exhumation, and uplift history of the Brazilian passive continental margin.

Karl, Markus; Glasmacher, Ulrich A.; Hackspacher, Peter C.; Franco-Magalhaes, Ana O. B.

2010-05-01

74

Tectonic burial and exhumation cycles tracked by muscovite and K-feldspar 40Ar/39Ar thermochronology in a strike-slip fault zone, central Turkey  

NASA Astrophysics Data System (ADS)

Muscovite and K-feldspar 40Ar/39Ar ages from the eastern margin of the Ni?de massif in central Anatolia track the timing of initial exhumation, reburial, and final exhumation and cooling of metamorphic rocks deformed within a strike-slip fault zone. Although the ages of initial and final cooling were known from previous studies, our new results document the timing of the reheating/reburial event. Muscovite from four of eight gneiss samples have Late Cretaceous 40Ar/39Ar ages that date initial cooling at ~ 75 Ma. The remaining samples have perturbed spectra that climb to Late Cretaceous ages with increasing extraction temperatures during analysis. These perturbed samples are located beneath a faulted unconformity overlain by Paleogene sedimentary deposits that were derived in part from the metamorphic rocks, then buried, metamorphosed, and deformed under greenschist facies conditions. Samples close to the faulted unconformity are more perturbed than structurally deeper samples. The age of the thermal perturbation is determined at 30 ± 5 Ma using multi-diffusion domain modeling of K-feldspar 40Ar/39Ar data from two gneiss samples, one located close to the unconformity and one at a structurally deeper level. Muscovite 40Ar/39Ar results and modeled K-feldspar temperature-time histories show that the eastern margin of the Ni?de massif experienced a reheating event that peaked at ~ 30 Ma. The thermal pulse has been attributed to reburial associated with transpression in the Ecemi? segment of the Central Anatolian Fault Zone along the eastern margin of the Ni?de massif. Activity of this fault zone may represent a far-field expression of the onset of collision of Arabia with Eurasia in SE Anatolia.

Idleman, Lauren; Cosca, Michael A.; Heizler, Matthew T.; Thomson, Stuart N.; Teyssier, Christian; Whitney, Donna L.

2014-02-01

75

[CII] At 1 < z < 2: Observing Star Formation in the Early Universe with Zeus (1 and 2)  

NASA Technical Reports Server (NTRS)

We report the detection of the [CII] 158 micron fine structure line from six submillimeter galaxies with redshifts between 1.12 and 1.73. This more than doubles the total number of [CII] 158 micron detections reported from high redshift sources. These observations were made with the Redshift(z) and Early Universe Spectrometer(ZEUS) at the Caltech Submillimeter Observatory on Mauna Kea, Hawaii between December 2006 and March 2009. ZEUS is a background limited submm echelle grating spectrometer (Hailey-Dunsheath 2009). Currently we are constructing ZEUS-2. This new instrument will utilize the same grating but will feature a two dimensional transition-edge sensed bolometer array with SQUID multiplexing readout system enabling simultaneous background limited observations in the 200, 340,450 and 650 micron telluric windows. ZEUS-2 will allow for long slit imaging spectroscopy in nearby galaxies and a [CII] survey from z 0.25 to 2.5.

Ferkinhoff, Carl; Hailey-Dunsheath, S.; Nikola, T.; Oberst, T.; Parshley, S.; Stacey, G.; Benford, D.; staguhn, J.

2010-01-01

76

The Complete Virtual 3d Reconstruction of the East Pediment of the Temple of ZEUS at Olympia  

NASA Astrophysics Data System (ADS)

The arrangement of the five central figures of the east pediment of the temple of Zeus at Olympia has been the subject of scholarly debates since the discovery of the fragments more than a century ago. In theory, there are four substantially different arrangements, all of which have already been selected by certain scholars for various aesthetic, technical and other considerations. The present project tries to approach this controversy in a new way, by producing a virtual 3D reconstruction of the group. Digital models of the statues were produced by scanning the original fragments and by reconstructing them virtually. For this purpose an innovative new software (Leonar3Do) has also been employed. The virtual model of the pediment surrounding the sculptures was prepared on the basis of the latest architectural studies and afterwards the reconstructed models were inserted in this frame, in order to test the technical feasibility and aesthetic effects the four possible arrangements. The paper gives an overview of the entire work and presents the final results suggesting that two arrangements can be ruled out due to the limited space available in the pediment.

Patay-Horváth, A.

2011-09-01

77

ZEUS2D: A Radiation Magnetohydrodynamics Code for Astrophysical Flows in Two Space Dimensions. II. The Magnetohydrodynamic Algorithms and Tests  

Microsoft Academic Search

In this, the third of a series of three papers, we conclude a detailed description ofZEUS-2D, a numerical code for the simulation of fluid dynamical flows in astrophysicsincluding a self-consistent treatment of the effects of magnetic fields and radiationtransfer. In this paper, we describe the radiation hydrodynamical (RHD) algorithmsin ZEUS-2D.We develop a two-dimensional full transport algorithm to evolve the radiation

James M. Stone; Michael L. Norman

1992-01-01

78

ZEUS HighQ 2 and BSM group. Summary of the group results to be  

E-print Network

with the ZEUS detector at HERA in 2004 and 2005 at a centre­of­mass energy of 318 GeV. The total cross section of the NC cross sections of deep inelas­ tic polarised electron and positron­proton scattering are combined Conference Inclusive NC and CC cross sections at high­Q 2 and EW physics #12; 1 High­Q 2 neutral and charged

79

ZEUS results on rapidity gap events in charged and neutral current processes at large Q2  

SciTech Connect

The observation of large rapidity gap(LRG) events in charged and neutral current deep inelastic scattering using e+p data collected with the ZEUS detector is reported. These events are compared with phenomenological models. The ratio of LRG to inclusive cross sections have been determined at Q2 > 200 GeV2, where Q2 is the negative square of the four-momentum of the exchanged boson, both for neutral and charged current processes.

Adamczyk, Leszek [AGH - University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow (Poland)

2005-10-06

80

The experimental search for CHARM pentaquarks in the ZEUS detector at HERA  

SciTech Connect

Using the full 1996 - 2000 ZEUS data at HERA (121 pb-1) we have searched for the {theta}{sub c}{sup 0}(3100) pentaquark in the photoproduction and DIS regime. The search has yielded negative results. The 95% C.L. upper limits on the visible rate R({theta}{sub c}{sup 0} {yields} D{sup *}p/D{sup *}) is 0.23% (0.35% for DIS)

Eisenberg, Yehuda [Weizmann Institute of Science, Rehovot (Israel)

2005-10-06

81

Cenozoic tectonics in the Buruanga Peninsula, Panay Island, Central Philippines, as constrained by U-Pb, 40Ar/39Ar and fission track thermochronometers  

NASA Astrophysics Data System (ADS)

Buruanga Peninsula forms the westernmost part of Panay Island, Central Philippines and is a part of the Palawan Continental Terrane (PCT), which was formerly attached to south-eastern China. It acted as the leading edge of the continental fragment and collided with the Philippine Mobile Belt (PMB) followed by convergence beneath the latter. Dating of the collision is crucial for understanding the evolution of the archipelago. Samples collected from Buruanga Peninsula were dated using U-Pb, 40Ar/39Ar and fission track dating (FTD) techniques to constrain the timing of the tectonic events related to the collision of the PMB with the PCT. These techniques have enabled us to obtain ages over a range of closure temperatures from about 700 °C to about 110 °C. Paleoproterozoic and Permian zircon U-Pb ages from Saboncogon Formation emphasize derivation of the western part of Buruanga Peninsula from SE China; zircon and apatite fission track ages of 51 Ma and 16 Ma, respectively, constrain the exhumation of this formation. The age data suggest tectonic events at ~ 14 Ma, ~ 11-12 Ma and about 7-8 Ma following intrusive activity at about 18 Ma. Uplift and exhumation at ~ 14 Ma are thought to be the result of subduction of low-density crustal rocks, at 11 Ma to be the result of isostatic uplift as a consequence of crustal thickening and at ~ 8 Ma to be due to the isostatic re-equilibration of the sediments overlying the former suture. Hence, collision is constrained to have started at about 14-15 Ma and to have ended before 8 Ma. Multi-element patterns of the 18 Ma Patria-Diorite from Buruanga Peninsula show enrichment in LILE (Rb, Sr, and K) and LREE and depletion in HFSE elements (Ti, Nb, and Ta) similar to those from Luzon volcanics and the volcanic rocks of Negros Island. These arc-signatures indicate a subduction related environment for the emplacement of this intrusive body and show that the diorite belongs to the PMB. The age constraints of the present study neither support the concept of an Early Miocene collision nor the assumption of a Late Miocene collision, thus, have a significant bearing on the controversial issues regarding the evolution of the present day Philippine archipelago.

Walia, M.; Yang, T. F.; Knittel, U.; Liu, T.-K.; Lo, C.-H.; Chung, S.-L.; Teng, L. S.; Dimalanta, C. B.; Yumul, G. P.; Yuan, W. M.

2013-01-01

82

Measurement of neutral current ep cross sections at high x with the ZEUS detector  

E-print Network

The latest results of the ZEUS collaboration on the high Q2, the exchanged boson virtuality, high Bjorken x region up to values of x = 1 are presented. Differential cross sections in x and Q2 are given for Q2 > 725 GeV2. An improved reconstruction method and a substantially increased amount of data allow a finer binning in the high-x region of the neutral current cross section and lead to a measurement with much improved precision compared to a similar earlier analysis. The measurements are compared to Standard Model expectations based on a variety of recent parton distribution functions.

Aharon Levy

2014-07-17

83

Inclusive diffraction with the ZEUS detector at HERA: a comparison among selection methods  

E-print Network

The diffractive dissociation of virtual photons, gamma*p -> Xp, has been studied with the ZEUS detector at HERA by requiring a large rapidity gap between X and the outgoing proton, by analysing the mass distribution, M_X, of the hadronic final state, as well as by directly tagging the proton. At low values of the proton momentum loss, the diffractive structure function measurements obtained with the three methods are consistent, provided the different treatment and contributions of proton-dissociative events are taken into account.

Marta Ruspa

2008-08-06

84

17 Apr 2007 Y. Yamazaki (Kobe U) Jet production in diffractive DIS and photoproduction at ZEUS 1 Dijet production in diffractive  

E-print Network

to compare with H1 2002 (prel.) fit. The ZEUS LPS (left plot) gives smaller cross sections (~ 10%) NLO and photoproduction at ZEUS 3 Jet cross sections and factorisation Jet cross sections can be calculated in pQCD using the factorisation formula Example: jet cross section d/dET at given xP They can give constraint to the gluons

85

Extraction of the proton parton density functions using a NLO-QCD fit of the combined H1 and ZEUS inclusive DIS cross sections  

E-print Network

cross-sections are available, PDF fits can be made to HERA data alone, since the HERA high Q2 crossExtraction of the proton parton density functions using a NLO-QCD fit of the combined H1 and ZEUS inclusive DIS cross sections Gang LI on behalf of the H1 and ZEUS collaborations Laboratoire de l

Paris-Sud XI, Université de

86

RESULTS FOR THE INTERMEDIATE-SPECTRUM ZEUS BENCHMARK OBTAINED WITH NEW 63,65Cu CROSS-SECTION EVALUATIONS  

SciTech Connect

The four HEU, intermediate-spectrum, copper-reflected Zeus experiments have shown discrepant results between measurement and calculation for the last several major releases of the ENDF library. The four benchmarks show a trend in reported C/E values with increasing energy of average lethargy causing fission. Recently, ORNL has made improvements to the evaluations of three key isotopes involved in the benchmark cases in question. Namely, an updated evaluation for 235U and evaluations of 63,65Cu. This paper presents the benchmarking results of the four intermediate-spectrum Zeus cases using the three updated evaluations.

Sobes, Vladimir [ORNL] [ORNL; Leal, Luiz C [ORNL] [ORNL

2014-01-01

87

Measurement of beauty production in DIS and F_2^bbbar extraction at ZEUS  

E-print Network

Beauty production in deep inelastic scattering with events in which a muon and a jet are observed in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb^-1. The fraction of events with beauty quarks in the data was determined using the distribution of the transverse momentum of the muon relative to the jet. The cross section for beauty production was measured in the kinematic range of photon virtuality, Q^2 > 2 Gev^2, and inelasticity, 0.05 < y < 0.7, with the requirement of a muon and a jet. Total and differential cross sections are presented and compared to QCD predictions. The beauty contribution to the structure function F_2 was extracted and is compared to theoretical predictions.

Abramowicz, H; Adamczyk, L; Adamus, M; Aggarwal, R; Antonelli, S; Antonioli, P; Antonov, A; Arneodo, M; Aushev, V; Aushev, Y; Bachynska, O; Bamberger, A; Barakbaev, A N; Barbagli, G; Bari, G; Barreiro, F; Bartsch, D; Basile, M; Behnke, O; Behr, J; Behrens, U; Bellagamba, L; Bertolin, A; Bhadra, S; Bindi, M; Blohm, C; Bold, T; Boos, E G; Borodin, M; Borras, K; Boscherini, D; Bot, D; Boutle, S K; Brock, I; Brownson, E; Brugnera, R; Bruemmer, N; Bruni, A; Bruni, G; Brzozowska, B; Bussey, P J; Butterworth, J M; Bylsma, B; Caldwell, A; Capua, M; Carlin, R; Catterall, C D; Chekanov, S; Chwastowski, J; Ciborowski, J; Ciesielski, R; Cifarelli, L; Cindolo, F; Contin, A; Cooper-Sarkar, A M; Coppola, N; Corradi, M; Corriveau, F; Costa, M; D'Agostini, G; Corso, F Dal; de Favereau, J; del Peso, J; Dementiev, R K; De Pasquale, S; Derrick, M; Devenish, R C E; Dobur, D; Dolgoshein, B A; Doyle, A T; Drugakov, V; Durkin, L S; Dusini, S; Eisenberg, Y; Ermolov, P F; Eskreys, A; Fang, S; Fazio, S; Ferrando, J; Ferrero, M I; Figiel, J; Forrest, M; Foster, B; Fourletov, S; Gach, G; Galas, A; Gallo, E; Garfagnini, A; Geiser, A; Gialas, I; Gladilin, L K; Gladkov, D; Glasman, C; Gogota, O; Golubkov, Yu A; Goettlicher, P; Grabowska-Bold, I; Grebenyuk, J; Gregor, I; Grigorescu, G; Grzelak, G; Gwenlan, C; Haas, T; Hain, W; Hamatsu, R; Hart, J C; Hartmann, H; Hartner, G; Hilger, E; Hochman, D; Holm, U; Hori, R; Horton, K; Huettmann, A; Iacobucci, G; Ibrahim, Z A; Iga, Y; Ingbir, R; Ishitsuka, M; Jakob, H -P; Januschek, F; Jimenez, M; Jones, T W; Juengst, M; Kadenko, I; Kahle, B; Kamaluddin, B; Kananov, S; Kanno, T; Karshon, U; Karstens, F; Katkov, I I; Kaur, M; Kaur, P; Keramidas, A; Khein, L A; Kim, J Y; Kisielewska, D; Kitamura, S; Klanner, R; Klein, U; Koffeman, E; Kollar, D; Kooijman, P; Korol, Ie; Korzhavina, I A; Kotanski, A; Koetz, U; Kowalski, H; Kulinski, P; Kuprash, O; Kuze, M; Kuzmin, V A; Lee, A; Levchenko, B B; Levy, A; Libov, V; Limentani, S; Ling, T Y; Lisovyi, M; Lobodzinska, E; Lohmann, W; Loehr, B; Lohrmann, E; Loizides, J H; Long, K R; Longhin, A; Lontkovskyi, D; Lukina, O Yu; Luzniak, P; Maeda, J; Magill, S; Makarenko, I; Malka, J; Mankel, R; Margotti, A; Marini, G; Martin, J F; Mastroberardino, A; Matsumoto, T; Mattingly, M C K; Melzer-Pellmann, I -A; Miglioranzi, S; Idris, F Mohamad; Monaco, V; Montanari, A; Morris, J D; Musgrave, B; Nagano, K; Namsoo, T; Nania, R; Nicholass, D; Nigro, A; Ning, Y; Noor, U; Notz, D; Nowak, R J; Nuncio-Quiroz, A E; Oh, B Y; Okazaki, N; Oliver, K; Olkiewicz, K; Onishchuk, Yu; Ota, O; Papageorgiu, K; Parenti, A; Paul, E; Pawlak, J M; Pawlik, B; Pelfer, P G; Pellegrino, A; Perlanski, W; Perrey, H; Piotrzkowski, K; Plucinski, P; Pokrovskiy, N S; Polini, A; Proskuryakov, A S; Przybycien, M; Raval, A; Reeder, D D; Reisert, B; Ren, Z; Repond, J; Ri, Y D; Robertson, A; Roloff, P; Ron, E; Rubinsky, I; Ruspa, M; Sacchi, R; Salii, A; Samson, U; Sartorelli, G; Savin, A A; Saxon, D H; Schioppa, M; Schlenstedt, S; Schleper, P; Schmidke, W B; Schneekloth, U; Schoenberg, V; Schoerner-Sadenius, T; Schwartz, J; Sciulli, F; Shcheglova, L M; Shehzadi, R; Shimizu, S; Singh, I; Skillicorn, I O; Slominski, W; Smith, W H; Sola, V; Solano, A; Son, D; Sosnovtsev, V; Spiridonov, A; Stadie, H; Stanco, L; Stern, A; Stewart, T P; Stifutkin, A; Stopa, P; Suchkov, S; Susinno, G; Suszycki, L; Sztuk, J; Szuba, D; Szuba, J; Tapper, A D; Tassi, E; Terron, J; Theedt, T; Tiecke, H; Tokushuku, K; Tomalak, O; Tomaszewska, J; Tsurugai, T; Turcato, M; Tymieniecka, T; Uribe-Estrada, C; Vazquez, M; Verbytskyi, A; Viazlo, V; Vlasov, N N; Volynets, O; Walczak, R; Abdullah, W A T Wan; Whitmore, J J; Whyte, J; Wiggers, L; Wing, M; Wlasenko, M; Wolf, G; Wolfe, H; Wrona, K; Yagues-Molina, A G; Yamada, S; Yamazaki, Y; Yoshida, R; Youngman, C; Zarnecki, A F; Zawiejski, L; Zenaiev, O; Zeuner, W; Zhautykov, B O; Zhmak, N; Zhou, C; Zichichi, A; Zolko, M; Zotkin, D S; Zulkapli, Z

2010-01-01

88

Measurement of D ± production in deep inelastic ep scattering with the ZEUS detector at HERA  

NASA Astrophysics Data System (ADS)

Charm production in deep inelastic ep scattering was measured with the ZEUS detector using an integrated luminosity of 354 pb-1. Charm quarks were identified by reconstructing D ± mesons in the D ± ? K ??±?± decay channel. Lifetime information was used to reduce combinatorial background substantially. Differential cross sections were measured in the kinematic region 5 < Q 2 < 1000 GeV2, 0 .02 < y < 0 .7, 1 .5 < p T ( D ±) < 15 GeV and | ?( D ±)| < 1 .6, where Q 2 is the photon virtuality, y is the inelasticity, and p T ( D ±) and ?( D ±) are the transverse momentum and the pseudorapidity of the D ± meson, respectively. Next-to-leading-order QCD predictions are compared to the data. The charm contribution, F_2^{{coverline{c}}} , to the proton structure-function F 2 was extracted.

Abramowicz, H.; Abt, I.; Adamczyk, L.; Adamus, M.; Aggarwal, R.; Antonelli, S.; Antonioli, P.; Antonov, A.; Arneodo, M.; Arslan, O.; Aushev, V.; Aushev, Y.; Bachynska, O.; Bamberger, A.; Barakbaev, A. N.; Barbagli, G.; Bari, G.; Barreiro, F.; Bartosik, N.; Bartsch, D.; Basile, M.; Behnke, O.; Behr, J.; Behrens, U.; Bellagamba, L.; Bertolin, A.; Bhadra, S.; Bindi, M.; Blohm, C.; Bokhonov, V.; Bold, T.; Boos, E. G.; Borras, K.; Boscherini, D.; Bot, D.; Brock, I.; Brownson, E.; Brugnera, R.; Brümmer, N.; Bruni, A.; Bruni, G.; Brzozowska, B.; Bussey, P. J.; Bylsma, B.; Caldwell, A.; Capua, M.; Carlin, R.; Catterall, C. D.; Chekanov, S.; Chwastowski, J.; Ciborowski, J.; Ciesielski, R.; Cifarelli, L.; Cindolo, F.; Contin, A.; Cooper-Sarkar, A. M.; Coppola, N.; Corradi, M.; Corriveau, F.; Costa, M.; D'Agostini, G.; Corso, F. Dal; del Peso, J.; Dementiev, R. K.; De Pasquale, S.; Derrick, M.; Devenish, R. C. E.; Dobur, D.; Dolgoshein, B. A.; Dolinska, G.; Doyle, A. T.; Drugakov, V.; Durkin, L. S.; Dusini, S.; Eisenberg, Y.; Ermolov, P. F.; Eskreys, A.; Fang, S.; Fazio, S.; Ferrando, J.; Ferrero, M. I.; Figiel, J.; Foster, B.; Gach, G.; Galas, A.; Gallo, E.; Garfagnini, A.; Geiser, A.; Gialas, I.; Gizhko, A.; Gladilin, L. K.; Gladkov, D.; Glasman, C.; Gogota, O.; Golubkov, Yu. A.; Göttlicher, P.; Grabowska-Bold, I.; Grebenyuk, J.; Gregor, I.; Grigorescu, G.; Grzelak, G.; Gueta, O.; Guzik, M.; Gwenlan, C.; Haas, T.; Hain, W.; Hamatsu, R.; Hart, J. C.; Hartmann, H.; Hartner, G.; Hilger, E.; Hochman, D.; Hori, R.; Hüttmann, A.; Ibrahim, Z. A.; Iga, Y.; Ingbir, R.; Ishitsuka, M.; Iudin, A.; Jakob, H.-P.; Januschek, F.; Jones, T. W.; Jüngst, M.; Kadenko, I.; Kahle, B.; Kananov, S.; Kanno, T.; Karshon, U.; Karstens, F.; Katkov, I. I.; Kaur, M.; Kaur, P.; Keramidas, A.; Khein, L. A.; Kim, J. Y.; Kisielewska, D.; Kitamura, S.; Klanner, R.; Klein, U.; Koffeman, E.; Kondrashova, N.; Kononenko, O.; Kooijman, P.; Korol, Ie.; Korzhavina, I. A.; Kotanski, A.; Kötz, U.; Kovalchuk, N.; Kowalski, H.; Kuprash, O.; Kuze, M.; Lee, A.; Levchenko, B. B.; Levy, A.; Libov, V.; Limentani, S.; Ling, T. Y.; Lisovyi, M.; Lobodzinska, E.; Lohmann, W.; Löhr, B.; Lohrmann, E.; Long, K. R.; Longhin, A.; Lontkovskyi, D.; Lukina, O. Yu.; Maeda, J.; Magill, S.; Makarenko, I.; Malka, J.; Mankel, R.; Margotti, A.; Marini, G.; Martin, J. F.; Mastroberardino, A.; Mattingly, M. C. K.; Melzer-Pellmann, I.-A.; Mergelmeyer, S.; Miglioranzi, S.; Idris, F. Mohamad; Monaco, V.; Montanari, A.; Morris, J. D.; Mujkic, K.; Musgrave, B.; Nagano, K.; Namsoo, T.; Nania, R.; Nigro, A.; Ning, Y.; Nobe, T.; Notz, D.; Nowak, R. J.; Nuncio-Quiroz, A. E.; Oh, B. Y.; Okazaki, N.; Olkiewicz, K.; Onishchuk, Yu.; Papageorgiu, K.; Parenti, A.; Paul, E.; Pawlak, J. M.; Pawlik, B.; Pelfer, P. G.; Pellegrino, A.; Perlanski, W.; Perrey, H.; Piotrzkowski, K.; Plucinski, P.; Pokrovskiy, N. S.; Polini, A.; Proskuryakov, A. S.; Przybycien, M.; Raval, A.; Reeder, D. D.; Reisert, B.; Ren, Z.; Repond, J.; Ri, Y. D.; Robertson, A.; Roloff, P.; Rubinsky, I.; Ruspa, M.; Sacchi, R.; Samson, U.; Sartorelli, G.; Savin, A. A.; Saxon, D. H.; Schioppa, M.; Schlenstedt, S.; Schleper, P.; Schmidke, W. B.; Schneekloth, U.; Schönberg, V.; Schörner-Sadenius, T.; Schwartz, J.; Sciulli, F.; Shcheglova, L. M.; Shehzadi, R.; Shimizu, S.; Singh, I.; Skillicorn, I. O.; Slominski, W.; Smith, W. H.; Sola, V.; Solano, A.; Son, D.; Sosnovtsev, V.; Spiridonov, A.; Stadie, H.; Stanco, L.; Stefaniuk, N.; Stern, A.; Stewart, T. P.; Stifutkin, A.; Stopa, P.; Suchkov, S.; Susinno, G.; Suszycki, L.; Sztuk-Dambietz, J.; Szuba, D.; Szuba, J.; Tapper, A. D.; Tassi, E.; Terrón, J.; Theedt, T.; Tiecke, H.; Tokushuku, K.; Tomaszewska, J.; Trofymov, A.; Trusov, V.; Tsurugai, T.; Turcato, M.; Turkot, O.; Tymieniecka, T.; Vázquez, M.; Verbytskyi, A.; Viazlo, O.; Vlasov, N. N.; Walczak, R.; Abdullah, W. A. T. Wan; Whitmore, J. J.; Wichmann, K.; Wiggers, L.; Wing, M.; Wlasenko, M.; Wolf, G.; Wolfe, H.; Wrona, K.; Yagües-Molina, A. G.; Yamada, S.; Yamazaki, Y.; Yoshida, R.; Youngman, C.; Zakharchuk, N.; ?arnecki, A. F.; Zawiejski, L.; Zenaiev, O.; Zeuner, W.; Zhautykov, B. O.; Zhmak, N.; Zichichi, A.; Zolkapli, Z.; Zotkin, D. S.

2013-05-01

89

Measurement of beauty production in DIS and F_2^bbbar extraction at ZEUS  

E-print Network

Beauty production in deep inelastic scattering with events in which a muon and a jet are observed in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb^-1. The fraction of events with beauty quarks in the data was determined using the distribution of the transverse momentum of the muon relative to the jet. The cross section for beauty production was measured in the kinematic range of photon virtuality, Q^2 > 2 Gev^2, and inelasticity, 0.05 < y < 0.7, with the requirement of a muon and a jet. Total and differential cross sections are presented and compared to QCD predictions. The beauty contribution to the structure function F_2 was extracted and is compared to theoretical predictions.

ZEUS collaboration; H. Abramowicz; I. Abt; L. Adamczyk; M. Adamus; R. Aggarwal; S. Antonelli; P. Antonioli; A. Antonov; M. Arneodo; V. Aushev; Y. Aushev; O. Bachynska; A. Bamberger; A. N. Barakbaev; G. Barbagli; G. Bari; F. Barreiro; D. Bartsch; M. Basile; O. Behnke; J. Behr; U. Behrens; L. Bellagamba; A. Bertolin; S. Bhadra; M. Bindi; C. Blohm; T. Bold; E. G. Boos; M. Borodin; K. Borras; D. Boscherini; D. Bot; S. K. Boutle; I. Brock; E. Brownson; R. Brugnera; N. Bruemmer; A. Bruni; G. Bruni; B. Brzozowska; P. J. Bussey; J. M. Butterworth; B. Bylsma; A. Caldwell; M. Capua; R. Carlin; C. D. Catterall; S. Chekanov; J. Chwastowski; J. Ciborowski; R. Ciesielski; L. Cifarelli; F. Cindolo; A. Contin; A. M. Cooper-Sarkar; N. Coppola; M. Corradi; F. Corriveau; M. Costa; G. D'Agostini; F. Dal Corso; J. de Favereau; J. del Peso; R. K. Dementiev; S. De Pasquale; M. Derrick; R. C. E. Devenish; D. Dobur; B. A. Dolgoshein; A. T. Doyle; V. Drugakov; L. S. Durkin; S. Dusini; Y. Eisenberg; P. F. Ermolov; A. Eskreys; S. Fang; S. Fazio; J. Ferrando; M. I. Ferrero; J. Figiel; M. Forrest; B. Foster; S. Fourletov; G. Gach; A. Galas; E. Gallo; A. Garfagnini; A. Geiser; I. Gialas; L. K. Gladilin; D. Gladkov; C. Glasman; O. Gogota; Yu. A. Golubkov; P. Goettlicher; I. Grabowska-Bold; J. Grebenyuk; I. Gregor; G. Grigorescu; G. Grzelak; C. Gwenlan; T. Haas; W. Hain; R. Hamatsu; J. C. Hart; H. Hartmann; G. Hartner; E. Hilger; D. Hochman; U. Holm; R. Hori; K. Horton; A. Huettmann; G. Iacobucci; Z. A. Ibrahim; Y. Iga; R. Ingbir; M. Ishitsuka; H. -P. Jakob; F. Januschek; M. Jimenez; T. W. Jones; M. Juengst; I. Kadenko; B. Kahle; B. Kamaluddin; S. Kananov; T. Kanno; U. Karshon; F. Karstens; I. I. Katkov; M. Kaur; P. Kaur; A. Keramidas; L. A. Khein; J. Y. Kim; D. Kisielewska; S. Kitamura; R. Klanner; U. Klein; E. Koffeman; D. Kollar; P. Kooijman; Ie. Korol; I. A. Korzhavina; A. Kotanski; U. Koetz; H. Kowalski; P. Kulinski; O. Kuprash; M. Kuze; V. A. Kuzmin; A. Lee; B. B. Levchenko; A. Levy; V. Libov; S. Limentani; T. Y. Ling; M. Lisovyi; E. Lobodzinska; W. Lohmann; B. Loehr; E. Lohrmann; J. H. Loizides; K. R. Long; A. Longhin; D. Lontkovskyi; O. Yu. Lukina; P. Luzniak; J. Maeda; S. Magill; I. Makarenko; J. Malka; R. Mankel; A. Margotti; G. Marini; J. F. Martin; A. Mastroberardino; T. Matsumoto; M. C. K. Mattingly; I. -A. Melzer-Pellmann; S. Miglioranzi; F. Mohamad Idris; V. Monaco; A. Montanari; J. D. Morris; B. Musgrave; K. Nagano; T. Namsoo; R. Nania; D. Nicholass; A. Nigro; Y. Ning; U. Noor; D. Notz; R. J. Nowak; A. E. Nuncio-Quiroz; B. Y. Oh; N. Okazaki; K. Oliver; K. Olkiewicz; Yu. Onishchuk; O. Ota; K. Papageorgiu; A. Parenti; E. Paul; J. M. Pawlak; B. Pawlik; P. G. Pelfer; A. Pellegrino; W. Perlanski; H. Perrey; K. Piotrzkowski; P. Plucinski; N. S. Pokrovskiy; A. Polini; A. S. Proskuryakov; M. Przybycien; A. Raval; D. D. Reeder; B. Reisert; Z. Ren; J. Repond; Y. D. Ri; A. Robertson; P. Roloff; E. Ron; I. Rubinsky; M. Ruspa; R. Sacchi; A. Salii; U. Samson; G. Sartorelli; A. A. Savin; D. H. Saxon; M. Schioppa; S. Schlenstedt; P. Schleper; W. B. Schmidke; U. Schneekloth; V. Schoenberg; T. Schoerner-Sadenius; J. Schwartz; F. Sciulli; L. M. Shcheglova; R. Shehzadi; S. Shimizu; I. Singh; I. O. Skillicorn; W. Slominski; W. H. Smith; V. Sola; A. Solano; D. Son; V. Sosnovtsev; A. Spiridonov; H. Stadie; L. Stanco; A. Stern; T. P. Stewart; A. Stifutkin; P. Stopa; S. Suchkov; G. Susinno; L. Suszycki; J. Sztuk; D. Szuba; J. Szuba; A. D. Tapper; E. Tassi; J. Terron; T. Theedt; H. Tiecke; K. Tokushuku; O. Tomalak; J. Tomaszewska; T. Tsurugai; M. Turcato; T. Tymieniecka; C. Uribe-Estrada; M. Vazquez; A. Verbytskyi; V. Viazlo; N. N. Vlasov; O. Volynets; R. Walczak; W. A. T. Wan Abdullah; J. J. Whitmore; J. Whyte; L. Wiggers; M. Wing; M. Wlasenko; G. Wolf; H. Wolfe; K. Wrona; A. G. Yagues-Molina; S. Yamada; Y. Yamazaki; R. Yoshida; C. Youngman; A. F. Zarnecki; L. Zawiejski; O. Zenaiev; W. Zeuner; B. O. Zhautykov; N. Zhmak; C. Zhou; A. Zichichi; M. Zolko; D. S. Zotkin; Z. Zulkapli

2010-05-19

90

Jet Cross Sections in nc Dis and Determination of ?s at ZEUS  

NASA Astrophysics Data System (ADS)

Inclusive jet differential cross sections have been measured in neutral current deep inelastic ep scattering for boson virtualities Q2 > 125 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 65 pb-1. Jets were identified in the Breit frame using the longitudinally invariant kT cluster algorithm. Measurements of differential inclusive jet cross sections are presented as functions of jet transverse energy, ET,B{ jet}, jet pseudorapidity and Q2, for jets with ET,B{ jet} > 8GeV. Next-to-leading-order (NLO) QCD calculations describe reasonably well the measurements. An NLO QCD analysis of the differential cross sections has allowed a precise determination of ?s (MZ) and a test of its scale dependence.

Jimenez, M.

2007-01-01

91

Makin' Tracks  

NSDL National Science Digital Library

In this activity, learners make plaster casts of an animal track to learn more about animals and animal behavior. Learners can use real animal tracks found outdoors or rubber track molds if conducted indoors. This lesson guide includes discussion questions, extensions/simplifications, and helpful hints.

2012-12-14

92

Animal Tracks  

NSDL National Science Digital Library

For those of us living in Northern climates, when winter snow covers the landscape it provides great conditions to search for animal tracks. The following websites provide an abundance of information and resources about the ancient art of animal tracking.The first site(1 ), Beartracker's Animal Tracks Den, is an excellent comprehensive "online field guide to tracks and tracking." The site includes animal track images, photos, as well as information about mammals, reptiles, birds, insects, amphibians, and other tracking resources. The second site (2), is an article by Jon C. Boren, Extension Wildlife Specialist and Byron D. Wright, Agricultural Specialist both from the University of New Mexico entitled Identifying and Preserving Wildlife Tracks. The third site (3), on Tracking and Stalking Wildlife, comes from The Virtual Cub Scout Leader's Handbook and provides short information pages on a variety on animals including photos and images of tracks. The fourth site (4) is a well-organized lesson plan with activities on Animal Signs from Eagle Bluff Environmental Learning Center. The fifth site (5) is the Outdoor Action Guide to Animal Tracking by Rick Curtis of Princeton University. This website provides solid and detailed information on many aspects of animal tracking including parts of a track, pattern classification, aging tracks, and more. The sixth site (6) is an article by veteran tracker Jim Halfpenny, Ph.D. about how to determine the accurate track size for an animal. Site visitors can link from this article to the homepage for A Naturalist's World which has information about tracking classes offered in various North American locations. For anyone interested in developing their animal tracking skills, the final two websites also offer courses from very experienced trackers in different regions of North America. The seventh site (7), Tom Brown's Tracker School is the largest school of its kind with locations in New Jersey, California, and Florida. The eighth site, (8) Wilderness Awareness School is located in Washington but offers courses in other regions as well. This website also provides an extensive list of links for many other tracking resources.

93

Hurricane Tracking  

NSDL National Science Digital Library

This homework assignment is given in the first two weeks of class. Students receive one or two lectures that cover the topics of atmospheric layers, temperature and pressure profiles, concepts of atmospheric mass and pressure and measuring (i.e. dropsonde) instrumentation. At the beginning of each lecture I briefly show them the tropical update from the NOAA National Hurricane Center web site; if there is an active storm, I show where I go to get more info, such as the projected storm track and storm history (for example, from Intellicast Hurricane Tracking). Then, for this assignment, I reintroduce them to these hurricane information web sites and demonstrate how to find the historical data on tropical storms (such as from the Unisys Hurricane Data Archive), and how to copy and paste text data into word and/or excel, as a tab- or space-delimited file. I point out some problem areas with this data-grabbing method, such as headers that get lost from their associated data column or date information that may not format as dates. I then hand out the assignment, which asks them to: Find data on a current or recent (this year) tropical system, provide the name and year of the storm and the reference web site, and plot the wind speed and pressure variables against time. Students should label the axes and give a descriptive title to the chart. Describe what they notice in the graphed data and if it seems believable (this allows students to decide if they have done the task correctly by using their understanding of the data). Predict what will happen if the storm a) intensifies or b) weakens. I then provide another data set (of any long-duration tropical storm that formed, weakened and later re-intensified) and ask them to go through the same process of plotting and interpretation. I tell them that some future climate predictions are for more storms with lower central pressures and ask which of the two charts best represents that future scenario, and why.

Lisa Doner

94

FAST TRACK COMMUNICATION: Metal vapour causes a central minimum in arc temperature in gas-metal arc welding through increased radiative emission  

Microsoft Academic Search

A computational model of the argon arc plasma in gas-metal arc welding (GMAW) that includes the influence of metal vapour from the electrode is presented. The occurrence of a central minimum in the radial distributions of temperature and current density is demonstrated. This is in agreement with some recent measurements of arc temperatures in GMAW, but contradicts other measurements and

M. Schnick; U. Füssel; M. Hertel; A. Spille-Kohoff; A. B. Murphy

2010-01-01

95

Fraction Track  

NSDL National Science Digital Library

This interactive applet provides a visual model to help students compare fractions and understand equivalent fractions. The applet displays eight fraction tracks (unit number lines) divided into fractional increments from halves to twelfths. The user turns over cards displaying fractions and moves sliders on the tracks a distance equal to or less than the target fractions. The goal is to move all the sliders to the end of each fraction track in the least number of moves.

2009-01-01

96

Probing the Ionized Medium in Early Universe with ZEUS(1 & 2)  

NASA Astrophysics Data System (ADS)

Using the first generation Redshift(z) and Early Universe Spectrometer (ZEUS-1) on the Caltech Submillimeter Observatory we made the first detections of the [NII] 122 ?m and [OIII] 88 ?m lines from galaxies in the early Universe. We detect both lines from SMMJ02399-0136 at z 2.8, while from H1413+117 (the Cloverleaf QSO) at z 2.6 and APM08279+5255 at z 3.9 we detect only the [NII] and [OIII] lines respectively. All three sources are lensed, IR-luminous with intrinsic far-infrared (FIR) luminosities >1012 Lsun, and contain both an active galactic nucleus (AGN) and star-forming component. The lines detected from the sources are bright with line to FIR continuum luminosity ratios ranging between 5×10-4 and 2×10-3. The [NII] and [OIII] lines are excellent probes of the state of the ionized gas. The strengths of the lines provide a minimum ionized-gas mass, which for our sources is large, 8%-17% of the molecular gas mass. The ratio of the lines is very sensitive to the effective temperature of ionizing stars and the ionization parameter for emission arising in the narrow-line region (NLR) of an AGN. The [OIII]/[NII] line ratio for SMMJ02399 indicates that the dominant source of the line emission is either stellar H II regions ionized by O9.5 stars, or the NLR of the AGN with ionization parameter log(U) = -3.3 to -4.0. Both the Cloverleaf and APM08279 exhibit starbursts similar to that found in M82 and are respectively best modeled by a superposition of 200 and 270 M82 like starbursts. Follow-up observations with Herschel and ALMA, will constrain the fraction of line emission arising in the starburst and NLR. Using ZEUS-2 (Ferkinhoff et al. 2010) we will expand our sample of high-redshift galaxies with [NII] and [OIII] detections to fully understand the state and evolution of ionized medium in the early Universe.

Ferkinhoff, Carl; Brisbin, D.; Nikola, T.; Parshley, S.; Stacey, G.; Hailey-Dunsheath, S.; Phillips, T. G.; Falgarone, E.; Benford, D.; Staguhn, J.; Irwin, K.; Cho, S.; Niemack, M.

2012-05-01

97

Measurement of the cross section for the reaction ?p ? J\\/? p with the ZEUS detector at HERA  

Microsoft Academic Search

This paper reports the cross section measurements for the process ep ? e J\\/? p for Q2 < 4 GeV2 at s = 296 GeV, based on an integrated luminosity of about 0.5 pb?1, using the ZEUS detector. The J\\/? was detected in its e+e? and ?+?? decay modes. The photoproduction cross section was measured to be 52?12+7 ± 10

S. Bhadra; M. L. Cardy; C.-P Fagerstroem; W. R. Frisken; K. M. Furutani; M. Khakzad; W. B. Schmidke; R. L. Talaga; H. Zhang; R. Ayad; G. Bari; M. Basile; L. Bellagamba; D. Boscherini; A. Bruni; G. Bruni; P. Bruni; G. Cara Romeo; G. Castellini; M. Chiarini; L. Cifarelli; F. Cindolo; A. Contin; M. Corradi; I. Gialas; P. Giusti; G. Iacobucci; G. Laurenti; G. Levi; A. Margotti; T. Massam; R. Nania; C. Nemoz; F. Palmonari; A. Polini; G. Sartorelli; R. Timellini; Y. Zamora Garcia; A. Zichichi; A. Bargende; J. Crittenden; K. Desch; B. Diekmann; T. Doeker; M. Eckert; L. Feld; A. Frey; M. Geerts; G. Geitz; M. Grothe; T. Haas; H. Hartmann; D. Haun; K. Heinloth; E. Hilger; H.-P. Jakob; U. F. Katz; S. M. Mari; A. Mass; S. Mengel; J. Mollen; E. Paul; Ch. Rembser; R. Schattevoy; D. Schramm; J. Stamm; R. Wedemeyer; S. Campbell-Robson; A. Cassidy; N. Dyce; B. Foster; S. George; R. Gilmore; G. P. Heath; H. F. Heath; T. J. Llewellyn; C. J. S. Morgado; D. J. P. Norman; J. A. O'Mara; R. J. Tapper; S. S. Wilson; R. Yoshida; R. R. Rau; M. Arneodo; L. Iannotti; M. Schioppa; G. Susinno; A. Bernstein; A. Caldwell; N. Cartiglia; J. A. Parsons; S. Ritz; F. Sciulli; P. B. Straub; L. Wai; S. Yang; Q. Zhu; P. Borzemski; J. Chwastowski; A. Eskreys; K. Piotrzkowski; M. Zachara; L. Zawiejski; L. Adamczyk; B. Bednarek; K. Jelen; D. Kisielewska; T. Kowalski; E. Rulikowska-Zarebska; L. Suszycki; J. Zajac; A. Kotanski; M. Przybycien; L. A. T. Bauerdick; U. Behrens; H. Beier; J. K. Bienlein; C. Coldewey; O. Deppe; K. Desler; G. Drews; M. Flasinski; D. J. Gilkinson; C. Glasman; P. Göttlicher; J. Große-Knetter; B. Gutjahr; W. Hain; D. Hasell; H. Heßling; Y. Iga; P. Joos; M. Kasemann; R. Klanner; W. Koch; L. Köpke; U. Kötz; H. Kowalski; J. Labs; A. Ladage; B. Löhr; M. Löwe; D. Lüke; O. Manczak; T. Monteiro; J. S. T. Ng; S. Nickel; D. Notz; K. Ohrenberg; M. Roco; M. Rohde; J. Roldán; U. Schneekloth; W. Schulz; F. Selonke; E. Stiliaris; B. Surrow; T. Voß; D. Westphal; G. Wolf; C. Youngman; J. F. Zhou; H. J. Grabosch; A. Kharchilava; A. Leich; M. C. K. Mattingly; A. Meyer; S. Schlenstedt; N. Wulff; G. Barbagli; P. Pelfer; G. Anzivino; G. Maccarrone; S. de Pasquale; L. Votano; A. Bamberger; S. Eisenhardt; A. Freidhof; S. Söldner-Rembold; J. Schroeder; T. Trefzger; N. H. Brook; P. J. Bussey; A. T. Doyle; J. I. Fleck; D. H. Saxon; M. L. Utley; A. S. Wilson; A. Dannemann; U. Holm; D. Horstmann; T. Neumann; R. Sinkus; K. Wick; E. Badura; B. D. Burow; L. Hagge; E. Lohrmann; J. Mainusch; J. Milewski; M. Nakahata; N. Pavel; G. Poelz; W. Schott; F. Zetsche; T. C. Bacon; I. Butterworth; E. Gallo; V. L. Harris; B. Y. H. Hung; K. R. Long; D. B. Miller; P. P. O. Morawitz; A. Prinias; J. K. Sedgbeer; A. F. Whitfield; U. Mallik; E. McCliment; M. Z. Wang; S. M. Wang; J. T. Wu; Y. Zhang; P. Cloth; D. Filges; S. H. An; S. M. Hong; S. W. Nam; S. K. Park; M. H. Suh; S. H. Yon; R. Imlay; S. Kartik; H.-J. Kim; R. R. McNeil; W. Metcalf; V. K. Nadendla; F. Barreiro; G. Cases; R. Graciani; J. M. Hernández; L. Hervás; L. Labarga; J. del Peso; J. Puga; J. Terron; J. F. de Trocóniz; G. R. Smith; F. Corriveau; D. S. Hanna; J. Hartmann; L. W. Hung; J. N. Lim; C. G. Matthews; P. M. Patel; L. E. Sinclair; D. G. Stairs; M. St. Laurent; R. Ullmann; G. Zacek; V. Bashkirov; B. A. Dolgoshein; A. Stifutkin; G. L. Bashindzhagyan; P. F. Ermolov; L. K. Gladilin; Y. A. Golubkov; V. D. Kobrin; V. A. Kuzmin; A. S. Proskuryakov; A. A. Savin; L. M. Shcheglova; A. N. Solomin; N. P. Zotov; M. Botje; F. Chlebana; A. Dake; J. Engelen; M. de Kamps; P. Kooijman; A. Kruse; H. Tiecke; W. Verkerke; M. Vreeswijk; L. Wiggers; E. de Wolf; R. van Woudenberg; D. Acosta; B. Bylsma; L. S. Durkin; K. Honscheid; C. Li; T. Y. Ling; K. W. McLean; W. N. Murray; I. H. Park; T. A. Romanowski; R. Seidlein; D. S. Bailey; G. A. Blair; A. Byrne; R. J. Cashmore; A. M. Cooper-Sarkar; D. Daniels; R. C. E. Devenish; N. Harnew; M. Lancaster; P. E. Luffman; L. Lindemann; J. D. McFall; C. Nath; V. A. Noyes; A. Quadt; H. Uijterwaal; R. Walczak; F. F. Wilson; T. Yip; G. Abbiendi; A. Bertolin; R. Brugnera; R. Carlin; F. dal Corso; M. de Giorgi; U. Dosselli; S. Limentani; M. Morandin; M. Posocco; L. Stanco; R. Stroili; C. Voci; J. Bulmahn; J. M. Butterworth; R. G. Field; B. Y. Oh; J. J. Whitmore; G. D'Agostini; G. Marini; A. Nigro; E. Tassi; J. C. Hart; N. A. McCubbin; K. Prytz; T. P. Shah; T. L. Short; E. Barberis; T. Dubbs; C. Heusch; M. van Hook; B. Hubbard; W. Lockman; J. T. Rahn; H. F.-W. Sadrozinski; A. Seiden; J. Biltzinger; R. J. Seifert; A. H. Walenta; G. Zech; H. Abramowicz; G. Briskin; S. Dagan; A. Levy; T. Hasegawa; M. Hazumi; T. Ishii; M. Kuze; S. Mine; Y. Nagasawa; M. Nakao; I. Suzuki; K. Tokushuku; S. Yamada; Y. Yamazaki; M. Chiba; R. Hamatsu; T. Hirose; K. Homma; S. Kitamura; Y. Nakamitsu; K. Yamauchi; R. Cirio; M. Costa; M. I. Ferrero; L. Lamberti; S. Maselli

1995-01-01

98

Measurements of deep inelastic scattering at high (x,Q{sup 2}) with the ZEUS detector at HERA  

SciTech Connect

In this talk I report on the latest results of the ZEUS collaboration concerning the cross sections in both charged current and neutral current channels at high (x,Q{sup 2}), together with the comparison with expectations. The data set corresponds to an integrated luminosity of 33.5 pb{sup -1}. The results are those given at the 1997 Lepton-Photon Conference and update the earlier publication.

Derrick, Malcolm [High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

1998-05-29

99

FAST TRACK COMMUNICATION: Metal vapour causes a central minimum in arc temperature in gas-metal arc welding through increased radiative emission  

NASA Astrophysics Data System (ADS)

A computational model of the argon arc plasma in gas-metal arc welding (GMAW) that includes the influence of metal vapour from the electrode is presented. The occurrence of a central minimum in the radial distributions of temperature and current density is demonstrated. This is in agreement with some recent measurements of arc temperatures in GMAW, but contradicts other measurements and also the predictions of previous models, which do not take metal vapour into account. It is shown that the central minimum is a consequence of the strong radiative emission from the metal vapour. Other effects of the metal vapour, such as the flux of relatively cold vapour from the electrode and the increased electrical conductivity, are found to be less significant. The different effects of metal vapour in gas-tungsten arc welding and GMAW are explained.

Schnick, M.; Füssel, U.; Hertel, M.; Spille-Kohoff, A.; Murphy, A. B.

2010-01-01

100

New apatite fission-track data reflecting the landscape evolution using the example of the southeastern passive continental margin in Central Brazil  

Microsoft Academic Search

Low-temperature thermochronolgy like AFT yield a well established tool to understand and reconstruct the rift to post-rift evolution of the passive continental margin in Brazil. The aim of the study is to quantify the temperature, exhumation, uplift, and long-term dynamic evolution of the topography of the southeastern passive continental margin in the states of Paraná and Santa Catarina (Central Brazil)

Markus Karl; Ulrich A. Glasmacher; Peter C. Hackspacher; Ana O. B. Franco-Magalhaes

2010-01-01

101

FAST TRACK PAPER: Detecting the limit of slab break-off in central Turkey: new high-resolution Pn tomography results  

Microsoft Academic Search

Inversion of Pn traveltime residuals from a 39-station broad-band array provides a high-resolution image of the velocity structure in the uppermost mantle beneath central Turkey. Individually picked Pn phase arrivals from events recorded by the North Anatolian Fault Passive Seismic Experiment and the Kandilli Observatory were combined with additional events associated with the Eastern Turkey Seismic Experiment. Tomography results show

Christine R. Gans; Susan L. Beck; George Zandt; C. Berk Biryol; A. Arda Ozacar

2009-01-01

102

Click-Tracking Blocker: Privacy Preservation by Disabling Search Engines' Click-Tracking  

E-print Network

Click-Tracking Blocker: Privacy Preservation by Disabling Search Engines' Click-Tracking Roberto and Computer Science University of Central Florida Orlando, FL 32816 USA Abstract--On a search engine result action will be tracked by returning back to the search engine first and then redirecting

Zou, Cliff C.

103

Tandem tracking  

USGS Multimedia Gallery

Biologist Sabrina Davenport tandem tracks the Lower Missouri River during high water on June 2, 2011.  Two boats (note boat out window) tracking in tandem can detect fish effectively across a wider river and can turn to search behind wing dikes and sandbars where sturgeon can hide during h...

104

Study of deep inelastic inclusive and diffractive scattering with the ZEUS forward plug calorimeter  

NASA Astrophysics Data System (ADS)

Deep inelastic scattering and its diffractive component, ep?e?p?eXN, have been studied at HERA with the ZEUS detector using an integrated luminosity of 4.2 pb. The measurement covers a wide range in the ?p c.m. energy W (37-245 GeV), photon virtuality Q2 (2.2-80 GeV 2) and mass M (0.28-35 GeV). The diffractive cross section for M>2 GeV rises strongly with W; the rise is steeper with increasing Q2. The latter observation excludes the description of diffractive deep inelastic scattering in terms of the exchange of a single pomeron. The ratio of diffractive to total cross section is constant as a function of W, in contradiction to the expectation of Regge phenomenology combined with a naive extension of the optical theorem to ?p scattering. Above M of 8 GeV, the ratio is flat with Q2, indicating a leading-twist behaviour of the diffractive cross section. The data are also presented in terms of the diffractive structure function, F2D(3)(?,x,Q), of the proton. For fixed ?, the Q2 dependence of xF2D(3) changes with x in violation of Regge factorisation. For fixed x, xF2D(3) rises as ??0, the rise accelerating with increasing Q2. These positive scaling violations suggest substantial contributions of perturbative effects in the diffractive DIS cross section.

Chekanov, S.; Derrick, M.; Magill, S.; Miglioranzi, S.; Musgrave, B.; Repond, J.; Yoshida, R.; Mattingly, M. C. K.; Pavel, N.; Yagües Molina, A. G.; Antonioli, P.; Bari, G.; Basile, M.; Bellagamba, L.; Boscherini, D.; Bruni, A.; Bruni, G.; Cara Romeo, G.; Cifarelli, L.; Cindolo, F.; Contin, A.; Corradi, M.; De Pasquale, S.; Giusti, P.; Iacobucci, G.; Margotti, A.; Montanari, A.; Nania, R.; Palmonari, F.; Pesci, A.; Polini, A.; Rinaldi, L.; Sartorelli, G.; Zichichi, A.; Aghuzumtsyan, G.; Bartsch, D.; Brock, I.; Goers, S.; Hartmann, H.; Hilger, E.; Irrgang, P.; Jakob, H.-P.; Kind, O.; Meyer, U.; Paul, E.; Rautenberg, J.; Renner, R.; Voss, K. C.; Wang, M.; Wlasenko, M.; Bailey, D. S.; Brook, N. H.; Cole, J. E.; Heath, G. P.; Namsoo, T.; Robins, S.; Capua, M.; Mastroberardino, A.; Schioppa, M.; Susinno, G.; Tassi, E.; Kim, J. Y.; Ma, K. J.; Helbich, M.; Ning, Y.; Ren, Z.; Schmidke, W. B.; Sciulli, F.; Chwastowski, J.; Eskreys, A.; Figiel, J.; Galas, A.; Olkiewicz, K.; Stopa, P.; Szuba, D.; Zawiejski, L.; Adamczyk, L.; Bo?d, T.; Grabowska-Bo?d, I.; Kisielewska, D.; Kowal, A. M.; ?ukasik, J.; Przybycie?, M.; Suszycki, L.; Szuba, J.; Kota?ski, A.; S?omi?ski, W.; Adler, V.; Behrens, U.; Bloch, I.; Borras, K.; Cassel, D. G.; Drews, G.; Fourletova, J.; Geiser, A.; Gladkov, D.; Goebel, F.; Göttlicher, P.; Graciani Diaz, R.; Gutsche, O.; Haas, T.; Hain, W.; Horn, C.; Kahle, B.; Kasemann, M.; Kötz, U.; Kowalski, H.; Kramberger, G.; Lelas, D.; Lim, H.; Löhr, B.; Mankel, R.; Martinez, M.; Melzer-Pellmann, I.-A.; Nguyen, C. N.; Notz, D.; Nuncio-Quiroz, A. E.; Raval, A.; Santamarta, R.; Schneekloth, U.; Stösslein, U.; Wolf, G.; Youngman, C.; Zeuner, W.; Schlenstedt, S.; Barbagli, G.; Gallo, E.; Genta, C.; Pelfer, P. G.; Bamberger, A.; Benen, A.; Karstens, F.; Dobur, D.; Vlasov, N. N.; Bussey, P. J.; Doyle, A. T.; Ferrando, J.; Hamilton, J.; Hanlon, S.; Saxon, D. H.; Skillicorn, I. O.; Gialas, I.; Carli, T.; Gosau, T.; Holm, U.; Krumnack, N.; Lohrmann, E.; Milite, M.; Salehi, H.; Schleper, P.; Schörner-Sadenius, T.; Stonjek, S.; Wichmann, K.; Wick, K.; Ziegler, A.; Ziegler, Ar.; Collins-Tooth, C.; Foudas, C.; Fry, C.; Gonçalo, R.; Long, K. R.; Tapper, A. D.; Kataoka, M.; Nagano, K.; Tokushuku, K.; Yamada, S.; Yamazaki, Y.; Barakbaev, A. N.; Boos, E. G.; Pokrovskiy, N. S.; Zhautykov, B. O.; Son, D.; de Favereau, J.; Piotrzkowski, K.; Barreiro, F.; Glasman, C.; González, O.; Jimenez, M.; Labarga, L.; del Peso, J.; Terrón, J.; Zambrana, M.; Barbi, M.; Corriveau, F.; Liu, C.; Padhi, S.; Plamondon, M.; Stairs, D. G.; Walsh, R.; Zhou, C.; Tsurugai, T.; Antonov, A.; Danilov, P.; Dolgoshein, B. A.; Sosnovtsev, V.; Stifutkin, A.; Suchkov, S.; Dementiev, R. K.; Ermolov, P. F.; Gladilin, L. K.; Katkov, I. I.; Khein, L. A.; Korzhavina, I. A.; Kuzmin, V. A.; Levchenko, B. B.; Lukina, O. Yu.; Proskuryakov, A. S.; Shcheglova, L. M.; Zotkin, D. S.; Zotkin, S. A.; Abt, I.; Büttner, C.; Caldwell, A.; Liu, X.; Sutiak, J.; Coppola, N.; Grigorescu, G.; Grijpink, S.; Keramidas, A.; Koffeman, E.; Kooijman, P.; Maddox, E.; Pellegrino, A.; Schagen, S.; Tiecke, H.; Vázquez, M.; Wiggers, L.; de Wolf, E.; Brümmer, N.; Bylsma, B.; Durkin, L. S.; Ling, T. Y.; Allfrey, P. D.; Bell, M. A.; Cooper-Sarkar, A. M.; Cottrell, A.; Devenish, R. C. E.; Foster, B.; Grzelak, G.; Gwenlan, C.; Kohno, T.; Patel, S.; Straub, P. B.; Walczak, R.; Bellan, P.; Bertolin, A.; Brugnera, R.; Carlin, R.; Ciesielski, R.; Dal Corso, F.; Dusini, S.; Garfagnini, A.; Limentani, S.; Longhin, A.; Stanco, L.; Turcato, M.; Heaphy, E. A.; Metlica, F.; Oh, B. Y.; Whitmore, J. J.; Iga, Y.; D'Agostini, G.; Marini, G.; Nigro, A.; Hart, J. C.; Abramowicz, H.; Gabareen, A.; Groys, M.; Kananov, S.; Kreisel, A.; Levy, A.; Kuze, M.; Kagawa, S.; Tawara, T.; Hamatsu, R.; Kaji, H.; Kitamura, S.; Matsuzawa, K.; Ota, O.; Ri, Y. D.; Costa, M.; Ferrero, M. I.; Monaco, V.; Sacchi, R.; Solano, A.; Arneodo, M.; Ruspa, M.; Fourletov, S.; Koop, T.; Martin, J. F.; Mirea, A.; Butterworth, J. M.; Hall-Wilton, R.; Jones, T. W.; Loizides, J. H.; Sutton, M. R.; Targett-Adams, C.; Wing, M.; Ciborowski, J.; Kulinski, P.; ?u?niak, P.; Malka, J.; Nowak, R. J.; Pawlak, J. M.; Sztuk, J.; Tymieniecka, T.; Tyszkiewicz, A.; Ukleja, A.; Ukleja, J.; ?arnecki, A. F.; Adamus, M.; Plucinski, P.; Eisenberg, Y.; Hochman, D.; Karshon, U.; Lightwood, M. S.; Everett, A.; Kçira, D.; Lammers, S.; Li, L.; Reeder, D. D.; Rosin, M.; Ryan, P.; Savin, A. A.; Smith, W. H.; Dhawan, S.; Bhadra, S.; Catterall, C. D.; Cui, Y.; Hartner, G.; Menary, S.; Noor, U.; Soares, M.; Standage, J.; Whyte, J.; ZEUS Collaboration

105

Climatic Changes from 12,000 to 4,000 Years Ago in the Austrian Central Alps Tracked by Sedimentological and Biological Proxies of a Lake Sediment Core  

Microsoft Academic Search

Major and trace elements, minerals, and grain-size were analysed from the early to mid-Holocene (12 to 4 ky BP) period of\\u000a a sediment core from the Alpine lake Oberer Landschitzsee (ObLAN, 2076 m a.s.l.), which is located on predominantly crystalline\\u000a bedrock on the southern slopes of the Austrian Central Alps. Geochemistry and mineralogy were compared with diatom-inferred\\u000a (Di-) ‘date of autumn mixing’

Roland Schmidt; Christian Kamenik; Richard Tessadri; Karin Anne Koinig

2006-01-01

106

FAST TRACK PAPER: Detecting the limit of slab break-off in central Turkey: new high-resolution Pn tomography results  

NASA Astrophysics Data System (ADS)

Inversion of Pn traveltime residuals from a 39-station broad-band array provides a high-resolution image of the velocity structure in the uppermost mantle beneath central Turkey. Individually picked Pn phase arrivals from events recorded by the North Anatolian Fault Passive Seismic Experiment and the Kandilli Observatory were combined with additional events associated with the Eastern Turkey Seismic Experiment. Tomography results show no change in Pn velocity across the North Anatolian Fault, although longitudinal variations are evident. A region of very low Pn velocities (<7.8 kms-1) is imaged east of the Central Anatolian Fault Zone (CAFZ), with a transition to faster velocities (>8.1 kms-1) west of the fault. The sharp transition along the CAFZ, which follows the palaeotectonic Inner-Tauride Suture, may represent the location of the edge of the slab window, created when the oceanic slab broke off along the Bitlis-Zagros Suture around 11 Ma, as the Arabian plate collided with the Eurasian plate.

Gans, Christine R.; Beck, Susan L.; Zandt, George; Biryol, C. Berk; Ozacar, A. Arda

2009-12-01

107

Fraction Track  

NSDL National Science Digital Library

"This applet allows students to individually practice working with relationships among fractions and ways of combining fractions. For a two person version of this applet see the Fraction Track E-Example." from NCTM Illuminations.

Illuminations National Council of Teachers of Mathematics

2009-05-12

108

Transit Tracks  

NSDL National Science Digital Library

In this space science activity, learners explore transits and the conditions when a transit may be seen. Learners use models to investigate how a planet's size and distance from its star affects the behavior of transits. Learners also use mathematics to interpret graphs of brightness vs. time to deduce information about planet-star systems. This lesson includes educator instructions, photocopy masters for Transit Light Curves, Option Math for Transit Tracks, Kepler’s 3rd Law graphs, cube root tables, an account of Jeremiah Horrocks' 1639 observation of the transit of Venus, and an answer key for the Transit Tracks Light Curves.

2012-07-11

109

Peculiar Active-Tectonic Landscape Within the Sanctuary of Zeus at Mt. Lykaion (Peloponnese, Greece)  

NASA Astrophysics Data System (ADS)

The Sanctuary of Zeus (Mt. Lykaion) lies in the Peloponnese within the Pindos fold and thrust belt. It is the object of investigation of the Mt. Lykaion Excavation and Survey (http://lykaionexcavation.org/). Mt. Lykaion is a thrust klippe, on the summit of which is an upper sanctuary marked by an ash altar, temenos, and column bases. Earliest objects recovered from the ash altar go back to 3000 BCE, leading Dr. David Romano (University of Pennsylvania), a principal leader of the project, to conclude that worship of divinities on the summit is ancient. Detailed structural geological mapping reveals one dimension of the "power" of the site. Crisscrossing the upper sanctuary are scree bands that mark the traces of active normal faults, which are expressions of tectonic stretching of the Aegean region. The scree bands, composed of cinder-block-sized limestone blocks, range up to 10 m in outcrop breadth, 100 m in length, and 5 m in thickness. Though discontinuous, most of the scree bands lie precisely on the traces of through-going faults, which cut and displace the sedimentary formations of the Pindos group. Some cut the thrust fault, whose elliptical trace defines the Lykaion klippe. What makes the scree bands of this active-tectonic landscape "peculiar" is that there are no cliffs from which the scree descends. Rather, the bands of scree occur along flanks of smooth, rounded hillslopes and ridges. The scree bands coincide with modest steps in the topography, ranging from tens of centimeters to several tens of meters. The specific bedrock formation where the bands are best developed is an Upper Cretaceous limestone whose average platy-bedding thickness (approximately 20 cm) matches closely the average joint spacing. The limestone has little mechanical integrity. It cannot support itself as a scarp footwall and instead collapses into a pile of scree, whose upper-surface inclination conforms to a stable angle of repose. Evidence of the contemporary nature of this faulting includes a scree band that nearly completely covers stone structures built by shepherds. Though the scree bands conceal surface ruptures, it is expected that trenching will determine that the scree cover may have preserved beneath it some expressions of surface rupture, and perhaps fault surfaces themselves.

Davis, G. H.

2008-12-01

110

Tracking Curlews  

USGS Multimedia Gallery

Curlews migrate long distances each year. Captured birds are quickly removed from mist nets and transported to the care of a veterinarian, who performs the implant surgeries to outfit the bird with a tracking device. In June 2007, USGS scientists tagged 13 curlews with satellite transmitters at thei...

111

Historical Hurricane Tracks  

NSDL National Science Digital Library

The Historical Hurricane Tracks tool is an interactive mapping application that allows you to easily search and display Atlantic Basin and East-Central Pacific Basin tropical cyclone data. At this web site you can learn about historical tropical cyclones occurring in different areas located throughout the Atlantic, Caribbean, and Gulf of Mexico. The web site provides information about U.S. coastal county population versus hurricane strikes as well as links to various Internet resources focusing on tropical cyclones. The interactive mapping application allows you to search the National Hurricane Center historical tropical cyclone database and graphically display storms affecting your area since 1851.

112

Fraction Tracks  

NSDL National Science Digital Library

This 17:29 minute video from the classic Annenberg Learner series illustrates the practice standard of communication about mathematics among a teacher and her students as they learn and play the "fraction tracks" game. The video also shows how activities like this allow students to use communication as a tool to deepen their understanding of mathematics. Three analysis questions are given at the end of the video to promote dialogue among teachers of mathematics.

WGBH Boston

1996-01-01

113

Tracking Otters  

NSDL National Science Digital Library

This activity (on pages 38-43) has learners simulate the way scientists track and map the movement of otters in the wild using radio trackers. One learner plays the role of Sea Otter, and other pairs of learners play the roles of Receiver and Tracker. The Sea Otter uses a clicker to represent the electronic transmitter on the otter, and each blindfolded Receiver listens through a paper towel tube "antenna" while the Tracker records where their partner hears the loudest click.

2014-01-28

114

The STAR tracking upgrade  

NASA Astrophysics Data System (ADS)

The STAR experiment at the Relativistic Heavy Ion Collider RHIC studies the new state of matter produced in relativistic heavy ion collisions and the spin structure of the nucleon in collisions of polarized protons. In order to improve the capabilities for heavy flavor measurements and the reconstruction of charged vector bosons an upgrade of the tracking system both in the central and the forward region is pursued. The challenging environments of high track multiplicity in heavy ion collisions and of high luminosity in polarized proton collisions require the use of new technologies. The proposed inner tracking system, optimized for heavy flavor identification, is using active pixel sensors close to the collision point and silicon strip technology further outward. Charge sign determination for electrons and positrons from the decay of W bosons will be provide by 6 large-area triple GEM disks currently under development. A prototype of the active pixel detectors has been tested in the STAR experiment, and an extensive beam test of triple GEM detectors using GEM foils produced by Tech-Etch of Plymouth, MA has been done at Fermilab.

Simon, F.

2008-05-01

115

Measurement of neutral current e+/-p cross sections at high Bjorken x with the ZEUS detector  

E-print Network

The neutral current e+/-p cross section has been measured up to values of Bjorken x of approximately 1 with the ZEUS detector at HERA using an integrated luminosity of 187 inv. pb of e-p and 142 inv. pb of e+p collisions at sqrt(s) = 318GeV. Differential cross sections in x and Q2, the exchanged boson virtuality, are presented for Q2 geq 725GeV2. An improved reconstruction method and greatly increased amount of data allows a finer binning in the high-x region of the neutral current cross section and leads to a measurement with much improved precision compared to a similar earlier analysis. The measurements are compared to Standard Model expectations based on a variety of recent parton distribution functions.

Abramowicz, H; Adamczyk, L; Adamus, M; Aggarwal, R; Antonelli, S; Arslan, O; Aushev, V; Aushev, Y; Bachynska, O; Barakbaev, A N; Bartosik, N; Behnke, O; Behr, J; Behrens, U; Bertolin, A; Bhadra, S; Bloch, I; Bokhonov, V; Boos, E G; Borras, K; Brock, I; Brugnera, R; Bruni, A; Brzozowska, B; Bussey, P J; Caldwell, A; Capua, M; Catterall, C D; Chwastowski, J; Ciborowski, J; Cooper-Sarkar, A M; Corradi, M; Corriveau, F; Agostini, G D; Dementiev, R K; Devenish, R C E; Dolinska, G; Drugakov, V; Dusini, S; Ferrando, J; Figiel, J; Foster, B; Gach, G; Garfagnini, A; Geiser, A; Gizhko, A; Gladilin, L K; Gogota, O; Golubkov, Yu A; Grebenyuk, J; Gregor, I; Grzelak, G; Gueta, O; Guzik, M; Hain, W; Hartner, G; Hochman, D; Hori, R; Ibrahim, Z A; Iga, Y; Ishitsuka, M; Iudin, A; Januschek, F; Kadenko, I; Kananov, S; Kanno, T; Karshon, U; Kaur, M; Kaur, P; Khein, L A; Kisielewska, D; Klanner, R; Klein, U; Kondrashova, N; Kononenko, O; Korol, Ie; Korzhavina, I A; Kotanski, A; Koetz, U; Kovalchuk, N; Kowalski, H; Kuprash, O; Kuze, M; Levchenko, B B; Levy, A; Libov, V; Limentani, S; Lisovyi, M; Lobodzinska, E; Lohmann, W; Loehr, B; Lohrmann, E; Longhin, A; Lontkovskyi, D; Lukina, O Yu; Maeda, J; Makarenko, I; Malka, J; Martin, J F; Mergelmeyer, S; Idris, F Mohamad; Mujkic, K; Myronenko, V; Nagano, K; Nigro, A; Nobe, T; Notz, D; Nowak, R J; Olkiewicz, K; Onishchuk, Yu; Paul, E; Perlanski, W; Perrey, H; Pokrovskiy, N S; Proskuryakov, A S; Przybycien, M; Raval, A; Roloff, P; Rubinsky, I; Ruspa, M; Samojlov, V; Saxon, D H; Schioppa, M; Schmidke, W B; Schneekloth, U; Schoerner-Sadenius, T; Schwartz, J; Shcheglova, L M; Shevchenko, R; Shkola, O; Singh, I; Skillicorn, I O; Slominski, W; Sola, V; Solano, A; Spiridonov, A; Stanco, L; Stefaniuk, N; Stern, A; Stewart, T P; Stopa, P; Sztuk-Dambietz, J; Szuba, D; Szuba, J; Tassi, E; Temiraliev, T; Tokushuku, K; Tomaszewska, J; Trofymov, A; Trusov, V; Tsurugai, T; Turcato, M; Turkot, O; Tymieniecka, T; Verbytskyi, A; Viazlo, O; Walczak, R; Abdullah, W A T Wan; Wichmann, K; Wing, M; Wolf, G; Yamada, S; Yamazaki, Y; Zakharchuk, N; Zarnecki, A F; Zawiejski, L; Zenaiev, O; Zhautykov, B O; Zhmak, N; Zotkin, D S

2013-01-01

116

Measurement of neutral current e±p cross sections at high Bjorken x with the ZEUS detector  

NASA Astrophysics Data System (ADS)

The neutral current e±p cross section has been measured up to values of Bjorken x ?1 with the ZEUS detector at HERA using an integrated luminosity of 187 pb-1 of e-p and 142 pb-1 of e+p collisions at ?s =318 GeV. Differential cross sections in x and Q2, the exchanged boson virtuality, are presented for Q2?725 GeV2. An improved reconstruction method and greatly increased amount of data allows a finer binning in the high-x region of the neutral current cross section and leads to a measurement with much improved precision compared to a similar earlier analysis. The measurements are compared to Standard Model expectations based on a variety of recent parton distribution functions.

Abramowicz, H.; Abt, I.; Adamczyk, L.; Adamus, M.; Aggarwal, R.; Antonelli, S.; Arslan, O.; Aushev, V.; Aushev, Y.; Bachynska, O.; Barakbaev, A. N.; Bartosik, N.; Behnke, O.; Behr, J.; Behrens, U.; Bertolin, A.; Bhadra, S.; Bloch, I.; Bokhonov, V.; Boos, E. G.; Borras, K.; Brock, I.; Brugnera, R.; Bruni, A.; Brzozowska, B.; Bussey, P. J.; Caldwell, A.; Capua, M.; Catterall, C. D.; Chwastowski, J.; Ciborowski, J.; Ciesielski, R.; Cooper-Sarkar, A. M.; Corradi, M.; Corriveau, F.; D'Agostini, G.; Dementiev, R. K.; Devenish, R. C. E.; Dolinska, G.; Drugakov, V.; Dusini, S.; Ferrando, J.; Figiel, J.; Foster, B.; Gach, G.; Garfagnini, A.; Geiser, A.; Gizhko, A.; Gladilin, L. K.; Gogota, O.; Golubkov, Yu. A.; Grebenyuk, J.; Gregor, I.; Grzelak, G.; Gueta, O.; Guzik, M.; Hain, W.; Hartner, G.; Hochman, D.; Hori, R.; Ibrahim, Z. A.; Iga, Y.; Ishitsuka, M.; Iudin, A.; Januschek, F.; Kadenko, I.; Kananov, S.; Kanno, T.; Karshon, U.; Kaur, M.; Kaur, P.; Khein, L. A.; Kisielewska, D.; Klanner, R.; Klein, U.; Kondrashova, N.; Kononenko, O.; Korol, Ie.; Korzhavina, I. A.; Kota?ski, A.; Kötz, U.; Kovalchuk, N.; Kowalski, H.; Kuprash, O.; Kuze, M.; Levchenko, B. B.; Levy, A.; Libov, V.; Limentani, S.; Lisovyi, M.; Lobodzinska, E.; Lohmann, W.; Löhr, B.; Lohrmann, E.; Longhin, A.; Lontkovskyi, D.; Lukina, O. Yu.; Maeda, J.; Makarenko, I.; Malka, J.; Martin, J. F.; Mergelmeyer, S.; Mohamad Idris, F.; Mujkic, K.; Myronenko, V.; Nagano, K.; Nigro, A.; Nobe, T.; Notz, D.; Nowak, R. J.; Olkiewicz, K.; Onishchuk, Yu.; Paul, E.; Perla?ski, W.; Perrey, H.; Pokrovskiy, N. S.; Proskuryakov, A. S.; Przybycie?, M.; Raval, A.; Roloff, P.; Rubinsky, I.; Ruspa, M.; Samojlov, V.; Saxon, D. H.; Schioppa, M.; Schmidke, W. B.; Schneekloth, U.; Schörner-Sadenius, T.; Schwartz, J.; Shcheglova, L. M.; Shevchenko, R.; Shkola, O.; Singh, I.; Skillicorn, I. O.; S?omi?ski, W.; Sola, V.; Solano, A.; Spiridonov, A.; Stanco, L.; Stefaniuk, N.; Stern, A.; Stewart, T. P.; Stopa, P.; Sztuk-Dambietz, J.; Szuba, D.; Szuba, J.; Tassi, E.; Temiraliev, T.; Tokushuku, K.; Tomaszewska, J.; Trofymov, A.; Trusov, V.; Tsurugai, T.; Turcato, M.; Turkot, O.; Tymieniecka, T.; Verbytskyi, A.; Viazlo, O.; Walczak, R.; Wan Abdullah, W. A. T.; Wichmann, K.; Wing, M.; Wolf, G.; Yamada, S.; Yamazaki, Y.; Zakharchuk, N.; ?arnecki, A. F.; Zawiejski, L.; Zenaiev, O.; Zhautykov, B. O.; Zhmak, N.; Zotkin, D. S.; ZEUS Collaboration

2014-04-01

117

Measurement of beauty production in DIS and [InlineEquation not available: see fulltext.] extraction at ZEUS  

NASA Astrophysics Data System (ADS)

Beauty production in deep inelastic scattering with events in which a muon and a jet are observed in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb-1. The fraction of events with beauty quarks in the data was determined using the distribution of the transverse momentum of the muon relative to the jet. The cross section for beauty production was measured in the kinematic range of photon virtuality, Q 2>2 GeV2, and inelasticity, 0.05< y<0.7, with the requirement of a muon and a jet. Total and differential cross sections are presented and compared to QCD predictions. The beauty contribution to the structure function F 2 was extracted and is compared to theoretical predictions.

Abramowicz, H.; Abt, I.; Adamczyk, L.; Adamus, M.; Aggarwal, R.; Antonelli, S.; Antonioli, P.; Antonov, A.; Arneodo, M.; Aushev, V.; Aushev, Y.; Bachynska, O.; Bamberger, A.; Barakbaev, A. N.; Barbagli, G.; Bari, G.; Barreiro, F.; Bartsch, D.; Basile, M.; Behnke, O.; Behr, J.; Behrens, U.; Bellagamba, L.; Bertolin, A.; Bhadra, S.; Bindi, M.; Blohm, C.; Bo?d, T.; Boos, E. G.; Borodin, M.; Borras, K.; Boscherini, D.; Bot, D.; Boutle, S. K.; Brock, I.; Brownson, E.; Brugnera, R.; Brümmer, N.; Bruni, A.; Bruni, G.; Brzozowska, B.; Bussey, P. J.; Butterworth, J. M.; Bylsma, B.; Caldwell, A.; Capua, M.; Carlin, R.; Catterall, C. D.; Chekanov, S.; Chwastowski, J.; Ciborowski, J.; Ciesielski, R.; Cifarelli, L.; Cindolo, F.; Contin, A.; Cooper-Sarkar, A. M.; Coppola, N.; Corradi, M.; Corriveau, F.; Costa, M.; D'Agostini, G.; Dal Corso, F.; de Favereau, J.; Del Peso, J.; Dementiev, R. K.; de Pasquale, S.; Derrick, M.; Devenish, R. C. E.; Dobur, D.; Dolgoshein, B. A.; Doyle, A. T.; Drugakov, V.; Durkin, L. S.; Dusini, S.; Eisenberg, Y.; Ermolov, P. F.; Eskreys, A.; Fang, S.; Fazio, S.; Ferrando, J.; Ferrero, M. I.; Figiel, J.; Forrest, M.; Foster, B.; Fourletov, S.; Gach, G.; Galas, A.; Gallo, E.; Garfagnini, A.; Geiser, A.; Gialas, I.; Gladilin, L. K.; Gladkov, D.; Glasman, C.; Gogota, O.; Golubkov, Yu. A.; Göttlicher, P.; Grabowska-Bo?d, I.; Grebenyuk, J.; Gregor, I.; Grigorescu, G.; Grzelak, G.; Gwenlan, C.; Haas, T.; Hain, W.; Hamatsu, R.; Hart, J. C.; Hartmann, H.; Hartner, G.; Hilger, E.; Hochman, D.; Holm, U.; Hori, R.; Horton, K.; Hüttmann, A.; Iacobucci, G.; Ibrahim, Z. A.; Iga, Y.; Ingbir, R.; Ishitsuka, M.; Jakob, H.-P.; Januschek, F.; Jimenez, M.; Jones, T. W.; Jüngst, M.; Kadenko, I.; Kahle, B.; Kamaluddin, B.; Kananov, S.; Kanno, T.; Karshon, U.; Karstens, F.; Katkov, I. I.; Kaur, M.; Kaur, P.; Keramidas, A.; Khein, L. A.; Kim, J. Y.; Kisielewska, D.; Kitamura, S.; Klanner, R.; Klein, U.; Koffeman, E.; Kollar, D.; Kooijman, P.; Korol, Ie.; Korzhavina, I. A.; Kota?ski, A.; Kötz, U.; Kowalski, H.; Kulinski, P.; Kuprash, O.; Kuze, M.; Kuzmin, V. A.; Lee, A.; Levchenko, B. B.; Levy, A.; Libov, V.; Limentani, S.; Ling, T. Y.; Lisovyi, M.; Lobodzinska, E.; Lohmann, W.; Löhr, B.; Lohrmann, E.; Loizides, J. H.; Long, K. R.; Longhin, A.; Lontkovskyi, D.; Lukina, O. Yu.; ?u?niak, P.; Maeda, J.; Magill, S.; Makarenko, I.; Malka, J.; Mankel, R.; Margotti, A.; Marini, G.; Martin, J. F.; Mastroberardino, A.; Matsumoto, T.; Mattingly, M. C. K.; Melzer-Pellmann, I.-A.; Miglioranzi, S.; Mohamad Idris, F.; Monaco, V.; Montanari, A.; Morris, J. D.; Musgrave, B.; Nagano, K.; Namsoo, T.; Nania, R.; Nicholass, D.; Nigro, A.; Ning, Y.; Noor, U.; Notz, D.; Nowak, R. J.; Nuncio-Quiroz, A. E.; Oh, B. Y.; Okazaki, N.; Oliver, K.; Olkiewicz, K.; Onishchuk, Yu.; Ota, O.; Papageorgiu, K.; Parenti, A.; Paul, E.; Pawlak, J. M.; Pawlik, B.; Pelfer, P. G.; Pellegrino, A.; Perlanski, W.; Perrey, H.; Piotrzkowski, K.; Plucinski, P.; Pokrovskiy, N. S.; Polini, A.; Proskuryakov, A. S.; Przybycie?, M.; Raval, A.; Reeder, D. D.; Reisert, B.; Ren, Z.; Repond, J.; Ri, Y. D.; Robertson, A.; Roloff, P.; Ron, E.; Rubinsky, I.; Ruspa, M.; Sacchi, R.; Salii, A.; Samson, U.; Sartorelli, G.; Savin, A. A.; Saxon, D. H.; Schioppa, M.; Schlenstedt, S.; Schleper, P.; Schmidke, W. B.; Schneekloth, U.; Schönberg, V.; Schörner-Sadenius, T.; Schwartz, J.; Sciulli, F.; Shcheglova, L. M.; Shehzadi, R.; Shimizu, S.; Singh, I.; Skillicorn, I. O.; S?omi?ski, W.; Smith, W. H.; Sola, V.; Solano, A.; Son, D.; Sosnovtsev, V.; Spiridonov, A.; Stadie, H.; Stanco, L.; Stern, A.; Stewart, T. P.; Stifutkin, A.; Stopa, P.; Suchkov, S.; Susinno, G.; Suszycki, L.; Sztuk, J.; Szuba, D.; Szuba, J.; Tapper, A. D.; Tassi, E.; Terrón, J.; Theedt, T.; Tiecke, H.; Tokushuku, K.; Tomalak, O.; Tomaszewska, J.; Tsurugai, T.; Turcato, M.; Tymieniecka, T.; Uribe-Estrada, C.; Vázquez, M.; Verbytskyi, A.; Viazlo, V.; Vlasov, N. N.; Volynets, O.; Walczak, R.; Wan Abdullah, W. A. T.; Whitmore, J. J.; Whyte, J.; Wiggers, L.; Wing, M.; Wlasenko, M.; Wolf, G.; Wolfe, H.; Wrona, K.; Yagües-Molina, A. G.; Yamada, S.; Yamazaki, Y.; Yoshida, R.; Youngman, C.; ?arnecki, A. F.; Zawiejski, L.; Zenaiev, O.; Zeuner, W.; Zhautykov, B. O.; Zhmak, N.; Zhou, C.; Zichichi, A.; Zolko, M.; Zotkin, D. S.; Zulkapli, Z.; ZEUS Collaboration

2010-10-01

118

Measurement of neutral current cross sections at high Bjorken-x with the ZEUS detector at HERA  

NASA Astrophysics Data System (ADS)

A new method is employed to measure the neutral current cross section up to Bjorken-x values of one with the ZEUS detector at HERA using an integrated luminosity of 65.1 pb-1 for e+p collisions and 16.7 pb-1 for e-p collisions at sqrt{s}=318 GeV and 38.6 pb-1 for e+p collisions at sqrt{s}=300 GeV. Cross sections have been extracted for Q2?648 GeV2 and are compared to predictions using different parton density functions. For the highest x bins, the data have a tendency to lie above the expectations using recent parton density function parametrizations.

Chekanov, S.; Derrick, M.; Magill, S.; Miglioranzi, S.; Musgrave, B.; Nicholass, D.; Repond, J.; Yoshida, R.; Mattingly, M. C. K.; Pavel, N.; Molina, A. G. Y.; Antonelli, S.; Antonioli, P.; Bari, G.; Basile, M.; Bellagamba, L.; Bindi, M.; Boscherini, D.; Bruni, A.; Bruni, G.; Cifarelli, L.; Cindolo, F.; Contin, A.; Corradi, M.; de Pasquale, S.; Iacobucci, G.; Margotti, A.; Nania, R.; Polini, A.; Rinaldi, L.; Sartorelli, G.; Zichichi, A.; Aghuzumtsyan, G.; Bartsch, D.; Brock, I.; Goers, S.; Hartmann, H.; Hilger, E.; Jakob, H.-P.; Jüngst, M.; Kind, O. M.; Paul, E.; Rautenberg, J.; Renner, R.; Samson, U.; Schönberg, V.; Wang, M.; Wlasenko, M.; Brook, N. H.; Heath, G. P.; Morris, J. D.; Namsoo, T.; Capua, M.; Fazio, S.; Mastroberardino, A.; Schioppa, M.; Susinno, G.; Tassi, E.; Kim, J. Y.; Ma, K. J.; Ibrahim, Z. A.; Kamaluddin, B.; Wan Abdullah, W. A. T.; Ning, Y.; Ren, Z.; Sciulli, F.; Chwastowski, J.; Eskreys, A.; Figiel, J.; Galas, A.; Gil, M.; Olkiewicz, K.; Stopa, P.; Zawiejski, L.; Adamczyk, L.; Bo?d, T.; Grabowska-Bo?d, I.; Kisielewska, D.; ?ukasik, J.; Przybycie?, M.; Suszycki, L.; Kota?ski, A.; S?omi?ski, W.; Adler, V.; Behrens, U.; Bloch, I.; Bonato, A.; Borras, K.; Coppola, N.; Fourletova, J.; Geiser, A.; Gladkov, D.; Göttlicher, P.; Gregor, I.; Gutsche, O.; Haas, T.; Hain, W.; Horn, C.; Kahle, B.; Kötz, U.; Kowalski, H.; Lim, H.; Lobodzinska, E.; Löhr, B.; Mankel, R.; Melzer-Pellmann, I.-A.; Montanari, A.; Nguyen, C. N.; Notz, D.; Nuncio-Quiroz, A. E.; Santamarta, R.; Schneekloth, U.; Spiridonov, A.; Stadie, H.; Stösslein, U.; Szuba, D.; Szuba, J.; Theedt, T.; Watt, G.; Wolf, G.; Wrona, K.; Youngman, C.; Zeuner, W.; Schlenstedt, S.; Barbagli, G.; Gallo, E.; Pelfer, P. G.; Bamberger, A.; Dobur, D.; Karstens, F.; Vlasov, N. N.; Bussey, P. J.; Doyle, A. T.; Dunne, W.; Ferrando, J.; Saxon, D. H.; Skillicorn, I. O.; Gialas, I.; Gosau, T.; Holm, U.; Klanner, R.; Lohrmann, E.; Salehi, H.; Schleper, P.; Schörner-Sadenius, T.; Sztuk, J.; Wichmann, K.; Wick, K.; Kataoka, M.; Matsumoto, T.; Nagano, K.; Tokushuku, K.; Yamada, S.; Yamazaki, Y.; Foudas, C.; Fry, C.; Long, K. R.; Tapper, A. D.; Barakbaev, A. N.; Boos, E. G.; Dossanov, A.; Pokrovskiy, N. S.; Zhautykov, B. O.; Son, D.; de Favereau, J.; Piotrzkowski, K.; Barreiro, F.; Glasman, C.; Jimenez, M.; Labarga, L.; Del Peso, J.; Ron, E.; Terrón, J.; Zambrana, M.; Corriveau, F.; Liu, C.; Walsh, R.; Zhou, C.; Tsurugai, T.; Antonov, A.; Dolgoshein, B. A.; Rubinsky, I.; Sosnovtsev, V.; Stifutkin, A.; Suchkov, S.; Dementiev, R. K.; Ermolov, P. F.; Gladilin, L. K.; Katkov, I. I.; Khein, L. A.; Korzhavina, I. A.; Kuzmin, V. A.; Levchenko, B. B.; Lukina, O. Y.; Proskuryakov, A. S.; Shcheglova, L. M.; Zotkin, D. S.; Zotkin, S. A.; Abt, I.; Büttner, C.; Caldwell, A.; Kollar, D.; Schmidke, W. B.; Sutiak, J.; Grigorescu, G.; Keramidas, A.; Koffeman, E.; Kooijman, P.; Pellegrino, A.; Tiecke, H.; Vázquez, M.; Wiggers, L.; Brümmer, N.; Bylsma, B.; Durkin, L. S.; Lee, A.; Ling, T. Y.; Allfrey, P. D.; Bell, M. A.; Cooper-Sarkar, A. M.; Cottrell, A.; Devenish, R. C. E.; Foster, B.; Gwenlan, C.; Korcsak-Gorzo, K.; Patel, S.; Roberfroid, V.; Robertson, A.; Straub, P. B.; Uribe-Estrada, C.; Walczak, R.; Bellan, P.; Bertolin, A.; Brugnera, R.; Carlin, R.; Ciesielski, R.; Dal Corso, F.; Dusini, S.; Garfagnini, A.; Limentani, S.; Longhin, A.; Stanco, L.; Turcato, M.; Oh, B. Y.; Raval, A.; Whitmore, J. J.; Iga, Y.; D'Agostini, G.; Marini, G.; Nigro, A.; Cole, J. E.; Hart, J. C.; Abramowicz, H.; Gabareen, A.; Ingbir, R.; Kananov, S.; Levy, A.; Kuze, M.; Hori, R.; Kagawa, S.; Shimizu, S.; Tawara, T.; Hamatsu, R.; Kaji, H.; Kitamura, S.; Ota, O.; Ri, Y. D.; Ferrero, M. I.; Monaco, V.; Sacchi, R.; Solano, A.; Arneodo, M.; Ruspa, M.; Fourletov, S.; Martin, J. F.; Boutle, S. K.; Butterworth, J. M.; Hall-Wilton, R.; Jones, T. W.; Loizides, J. H.; Sutton, M. R.; Targett-Adams, C.; Wing, M.; Brzozowska, B.; Ciborowski, J.; Grzelak, G.; Kulinski, P.; ?u?niak, P.; Malka, J.; Nowak, R. J.; Pawlak, J. M.; Tymieniecka, T.; Ukleja, A.; Ukleja, J.; ?arnecki, A. F.; Adamus, M.; Plucinski, P.; Eisenberg, Y.; Giller, I.; Hochman, D.; Karshon, U.; Rosin, M.; Brownson, E.; Danielson, T.; Everett, A.; Kçira, D.; Reeder, D. D.; Ryan, P.; Savin, A. A.; Smith, W. H.; Wolfe, H.; Bhadra, S.; Catterall, C. D.; Cui, Y.; Hartner, G.; Menary, S.; Noor, U.; Soares, M.; Standage, J.; Whyte, J.

2007-01-01

119

Measurement of neutral current e+/-p cross sections at high Bjorken x with the ZEUS detector  

E-print Network

The neutral current e+/-p cross section has been measured up to values of Bjorken x of approximately 1 with the ZEUS detector at HERA using an integrated luminosity of 187 inv. pb of e-p and 142 inv. pb of e+p collisions at sqrt(s) = 318GeV. Differential cross sections in x and Q2, the exchanged boson virtuality, are presented for Q2 geq 725GeV2. An improved reconstruction method and greatly increased amount of data allows a finer binning in the high-x region of the neutral current cross section and leads to a measurement with much improved precision compared to a similar earlier analysis. The measurements are compared to Standard Model expectations based on a variety of recent parton distribution functions.

ZEUS Collaboration; H. Abramowicz; I. Abt; L. Adamczyk; M. Adamus; R. Aggarwal; S. Antonelli; O. Arslan; V. Aushev; Y. Aushev; O. Bachynska; A. N. Barakbaev; N. Bartosik; O. Behnke; J. Behr; U. Behrens; A. Bertolin; S. Bhadra; I. Bloch; V. Bokhonov; E. G. Boos; K. Borras; I. Brock; R. Brugnera; A. Bruni; B. Brzozowska; P. J. Bussey; A. Caldwell; M. Capua; C. D. Catterall; J. Chwastowski; J. Ciborowski; R. Ciesielski; A. M. Cooper-Sarkar; M. Corradi; F. Corriveau; G. D Agostini; R. K. Dementiev; R. C. E. Devenish; G. Dolinska; V. Drugakov; S. Dusini; J. Ferrando; J. Figiel; B. Foster; G. Gach; A. Garfagnini; A. Geiser; A. Gizhko; L. K. Gladilin; O. Gogota; Yu. A. Golubkov; J. Grebenyuk; I. Gregor; G. Grzelak; O. Gueta; M. Guzik; W. Hain; G. Hartner; D. Hochman; R. Hori; Z. A. Ibrahim; Y. Iga; M. Ishitsuka; A. Iudin; F. Januschek; I. Kadenko; S. Kananov; T. Kanno; U. Karshon; M. Kaur; P. Kaur; L. A. Khein; D. Kisielewska; R. Klanner; U. Klein; N. Kondrashova; O. Kononenko; Ie. Korol; I. A. Korzhavina; A. Kotanski; U. Koetz; N. Kovalchuk; H. Kowalski; O. Kuprash; M. Kuze; B. B. Levchenko; A. Levy; V. Libov; S. Limentani; M. Lisovyi; E. Lobodzinska; W. Lohmann; B. Loehr; E. Lohrmann; A. Longhin; D. Lontkovskyi; O. Yu. Lukina; J. Maeda; I. Makarenko; J. Malka; J. F. Martin; S. Mergelmeyer; F. Mohamad Idris; K. Mujkic; V. Myronenko; K. Nagano; A. Nigro; T. Nobe; D. Notz; R. J. Nowak; K. Olkiewicz; Yu. Onishchuk; E. Paul; W. Perlanski; H. Perrey; N. S. Pokrovskiy; A. S. Proskuryakov; M. Przybycien; A. Raval; P. Roloff; I. Rubinsky; M. Ruspa; V. Samojlov; D. H. Saxon; M. Schioppa; W. B. Schmidke; U. Schneekloth; T. Schoerner-Sadenius; J. Schwartz; L. M. Shcheglova; R. Shevchenko; O. Shkola; I. Singh; I. O. Skillicorn; W. Slominski; V. Sola; A. Solano; A. Spiridonov; L. Stanco; N. Stefaniuk; A. Stern; T. P. Stewart; P. Stopa; J. Sztuk-Dambietz; D. Szuba; J. Szuba; E. Tassi; T. Temiraliev; K. Tokushuku; J. Tomaszewska; A. Trofymov; V. Trusov; T. Tsurugai; M. Turcato; O. Turkot; T. Tymieniecka; A. Verbytskyi; O. Viazlo; R. Walczak; W. A. T. Wan Abdullah; K. Wichmann; M. Wing; G. Wolf; S. Yamada; Y. Yamazaki; N. Zakharchuk; A. F. Zarnecki; L. Zawiejski; O. Zenaiev; B. O. Zhautykov; N. Zhmak; D. S. Zotkin

2014-04-04

120

Making Tracks  

NSDL National Science Digital Library

In this activity, students will make trackways by running across sheets of paper; their classmates will then determine what they can interpret from the trackways. The students discover that fossils are evidence of ancient life which is usually preserved in stone and that when most people think about fossils, they think about bones and skeletons. Students learn that not all fossils are the body parts of ancient organisms and that a very important type of fossil is called a trace fossil, scientifically termed an ichnofossil, the tracks or trails an organism leaves behind.

Stephen Greb

121

8. Launch closure, closure track apron, tracks and track beam, ...  

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

8. Launch closure, closure track apron, tracks and track beam, view towards west - Ellsworth Air Force Base, Delta Flight, Launch Facility D-6, 4 miles north of Badlands National Park Headquarters, 4.5 miles east of Jackson County line on county road, Interior, Jackson County, SD

122

On the Right Track.  

ERIC Educational Resources Information Center

Suggests thinking of "tracks" as clues and using them as the focus of outdoor activities in the urban environment. Provides 24 examples of possible track activities, including: seeds on the ground (track of a nearby tree), litter (track of a litterbug), and peeling paint (track of weathering forces). (JN)

Bieber, Ed

1983-01-01

123

Ocean Tracks  

NSDL National Science Digital Library

How are marine animals moving around when they are deep below the ocean's surface? It's a fascinating question, and one that has driven the work of part of Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO). On this website, visitors can see the "tracks" of selected marine animals tagged by CSIRO and partner agencies. It's an amazing experience, and visitors just need to download a small plug-in to get started. Some of the marine animals here include white sharks patrolling Australia's southern coast and bluefin tuna on their oceanic migrations. The About area is a great way to learn about the research and technology involved with this complicated endeavor. Also, visitors can check out the low-tech/accessible version of the site if they are so inclined.

124

Kernel-Based Object Tracking  

Microsoft Academic Search

A new approach toward target representation and localization, the central component in visual tracking of nonrigid objects, is proposed. The feature histogram-based target representations are regularized by spatial masking with an isotropic kernel. The masking induces spatially-smooth similarity functions suitable for gradient-based optimization, hence, the target localization problem can be formulated using the basin of attraction of the local maxima.

Dorin Comaniciu; Visvanathan Ramesh; Peter Meer

2003-01-01

125

Tracking objects, Tracking agents Nicolas J. Bullot  

E-print Network

of the understanding of conspecifics' mental states. For reasons of parsimony and computational economy, unless we have track of token individuals and the uniqueness problem for object tracking We shall

Paris-Sud XI, Université de

126

New tracking systems improve patient flow.  

PubMed

Wireless or infrared tracking systems can help you keep a handle on patient whereabouts, the status of tests that have been ordered, and locate important equipment in a more timely manner. Managers can track activities in admissions, lab, and pharmacy from a single location. Staff no longer has to spend time looking for patients, equipment, or each other. Key information is not only visible on a central monitor, but on every desktop computer in the ED. PMID:16106947

2005-08-01

127

A distributed database view of network tracking systems  

NASA Astrophysics Data System (ADS)

In distributed tracking systems, multiple non-collocated trackers cooperate to fuse local sensor data into a global track picture. Generating this global track picture at a central location is fairly straightforward, but the single point of failure and excessive bandwidth requirements introduced by centralized processing motivate the development of decentralized methods. In many decentralized tracking systems, trackers communicate with their peers via a lossy, bandwidth-limited network in which dropped, delayed, and out of order packets are typical. Oftentimes the decentralized tracking problem is viewed as a local tracking problem with a networking twist; we believe this view can underestimate the network complexities to be overcome. Indeed, a subsequent 'oversight' layer is often introduced to detect and handle track inconsistencies arising from a lack of robustness to network conditions. We instead pose the decentralized tracking problem as a distributed database problem, enabling us to draw inspiration from the vast extant literature on distributed databases. Using the two-phase commit algorithm, a well known technique for resolving transactions across a lossy network, we describe several ways in which one may build a distributed multiple hypothesis tracking system from the ground up to be robust to typical network intricacies. We pay particular attention to the dissimilar challenges presented by network track initiation vs. maintenance and suggest a hybrid system that balances speed and robustness by utilizing two-phase commit for only track initiation transactions. Finally, we present simulation results contrasting the performance of such a system with that of more traditional decentralized tracking implementations.

Yosinski, Jason; Paffenroth, Randy

2008-04-01

128

Archaeological elements of Mt. Lykaion Sanctuary of Zeus (southern Peloponnesus) in relation to tectonics and structural geology  

NASA Astrophysics Data System (ADS)

The Sanctuary of Zeus is the focus of the Mt. Lykaion Excavation/Survey (University of Pennsylvania, University of Arizona, and 39th Ephorate of Prehistoric and Classical Antiquities). It was described by Pausanias as a sacred place of pan-Hellenic significance, with stadium and hippodrome in which athletic games were held, a sanctuary of Pan, and a formidable temenos and altar of Lykaion Zeus. In picturing human activity on this mountain during ancient times, it is not adequate to treat the mountain as if it were simply a tall, symmetrical, and handy edifice within which rock contents are irrelevant, for the geology within Mt. Lykaion significantly influenced what was built on it, and where! There are contemporary reminders of the 'power' of the site, including the devastating April, 1965, Megalopolis earthquake, the epicenter of which was merely 4 km away. In fact, there are active normal faults within the sanctuary. However the primary geoarchitecture is that of the Pindos fold and thrust belt, fashioned largely in Cretaceous through Eocene. Mt. Lykaion's dome-like summit is a thrust klippe separated from underlying nappes by a major thrust fault (Lykaion thrust), the subhorizontal trace of which encircles the mountain creating a subtle bench in the landscape coinciding closely with archaeological and natural elements important to the sanctuary (e.g., stoa, seatwall, fountains, trails). Late Jurassic through Eocene 'Pindos Group' formations are stacked and repeated by the thrusting. Inter-relationships between bedrock, structure, and archaeology are revealed in a 'geoarchaeological column,' which displays positioning of elements in relation to the thrust, and orientations of rock formations in relation to flat patches in otherwise steep, rocky country, which became sites suitable for placement of hippodrome, baths, temenos, horse pasturing areas, etc. Worked limestone blocks are locally derived and can be matched with formations. The compelling high elevation of the ash altar is testimony to residual crustal buoyancy achieved through 'Pindos' crustal shortening, and the steep processional ascent to the altar speaks to regional active normal faulting and rapid erosion.

Davis, G. H.

2008-07-01

129

Study of charged---current ep interactions at Q 2>200 GeV2 with the ZEUS detector at HERA  

Microsoft Academic Search

Deep inelastic charged-current reactions have been studied in e + p and e - p collisions at a center of mass energy of about 300GeV in the kinematic region Q 2>200GeV2 and x>0.006 using the ZEUS detector at HERA. The integrated cross sections for Q 2>200GeV2 are found to be sigma _{e^ + p to bar nu X} = 30.3_{

M. Derrick; D. Krakauer; S. Magill; D. Mikunas; B. Musgrave; J. R. Okrasinski; J. Repond; R. Stanek; R. L. Talaga; H. Zhang; M. C. K. Mattingly; P. Antonioli; G. Bari; M. Basile; L. Bellagamba; D. Boscherini; A. Bruni; G. Bruni; P. Bruni; G. Cara Romeo; G. Castellini; L. Cifarelli; F. Cindolo; A. Contin; M. Corradi; I. Gialas; P. Giusti; G. Iacobucci; G. Laurenti; G. Levi; A. Margotti; T. Massam; R. Nania; F. Palmonari; A. Pesci; A. Polini; G. Sartorelli; Y. Zamora Garcia; A. Zichichi; C. Amelung; A. Bornheim; J. Crittenden; R. Deffner; T. Doeker; M. Eckert; L. Feld; A. Frey; M. Geerts; M. Grothe; H. Hartmann; K. Heinloth; L. Heinz; E. Hilger; H.-P. Jakob; U. F. Katz; S. Mengel; E. Paul; M. Pfeiffer; Ch. Rembser; D. Schramm; J. Stamm; R. Wedemeyer; S. Campbell-Robson; A. Cassidy; W. N. Cottingham; N. Dyce; B. Foster; S. George; M. E. Hayes; G. P. Heath; H. F. Heath; D. Piccioni; D. G. Roff; R. J. Tapper; R. Yoshida; M. Arneodo; R. Ayad; M. Capua; A. Garfagnini; L. Iannotti; M. Schioppa; G. Susinno; A. Caldwell; N. Cartiglia; Z. Jing; W. Liu; J. A. Parsons; S. Ritz; F. Sciulli; P. B. Straub; L. Wai; S. Yang; Q. Zhu; P. Borzemski; J. Chwastowski; A. Eskreys; Z. Jakubowski; M. B. Przybycien; M. Zachara; L. Zawiejski; L. Adamczyk; B. Bednarek; K. Jelen; D. Kisielewska; T. Kowalski; E. Rulikowska-Zarebska; L. Suszycki; J. Zajac; Z. Dulinski; A. Kotanski; G. Abbiendi; L. A. T. Bauerdick; U. Behrens; H. Beier; J. K. Bienlein; G. Cases; O. Deppe; K. Desler; G. Drews; M. Flasinski; D. J. Gilkinson; C. Glasman; P. Göttlicher; J. Große-Knetter; T. Haas; W. Hain; D. Hasell; H. Heßling; Y. Iga; K. F. Johnson; P. Joos; M. Kasemann; R. Klanner; W. Koch; U. Kötz; H. Kowalski; J. Labs; A. Ladage; B. Löhr; M. Löwe; D. Lüke; J. Mainusch; O. Manczak; J. Milewski; T. Monteiro; J. S. T. Ng; D. Notz; K. Ohrenberg; K. Piotrzkowski; M. Roco; M. Rohde; J. Roldán; U. Schneekloth; W. Schulz; F. Selonke; B. Surrow; E. Tassi; T. Voß; D. Westphal; G. Wolf; U. Wollmer; C. Youngman; W. Zeuner; H. J. Grabosch; A. Kharchilava; S. M. Mari; A. Meyer; S. Schlenstedt; N. Wulff; G. Barbagli; E. Gallo; P. Pelfer; G. Maccarrone; S. de Pasquale; L. Votano; A. Bamberger; S. Eisenhardt; T. Trefzger; S. Wölfle; J. T. Bromley; N. H. Brook; P. J. Bussey; A. T. Doyle; D. H. Saxon; L. E. Sinclair; M. L. Utley; A. S. Wilson; A. Dannemann; U. Holm; D. Horstmann; R. Sinkus; K. Wick; B. D. Burow; L. Hagge; E. Lohrmann; G. Poelz; W. Schott; F. Zetsche; T. C. Bacon; N. Brümmer; I. Butterworth; V. L. Harris; G. Howell; B. H. Y. Hung; L. Lamberti; K. R. Long; D. B. Miller; N. Pavel; A. Prinias; J. K. Sedgbeer; D. Sideris; A. F. Whitfield; U. Mallik; M. Z. Wang; S. M. Wang; J. T. Wu; P. Cloth; D. Filges; S. H. An; G. H. Cho; B. J. Ko; S. B. Lee; S. W. Nam; H. S. Park; S. K. Park; S. Kartik; H.-J. Kim; R. R. McNeil; W. Metcalf; V. K. Nadendla; F. Barreiro; J. P. Fernandez; R. Graciani; J. M. Hernández; L. Hervás; L. Labarga; M. Martinez; J. Del Peso; J. Puga; J. Terron; J. F. de Trocóniz; F. Corriveau; D. S. Hanna; J. Hartmann; L. W. Hung; J. N. Lim; C. G. Matthews; P. M. Patel; M. Riveline; D. G. Stairs; M. St-Laurent; R. Ullmann; G. Zacek; T. Tsurugai; V. Bashkirov; B. A. Dolgoshein; A. Stifutkin; G. L. Bashindzhagyan; P. F. Ermolov; L. K. Gladilin; Yu. A. Golubkov; V. D. Kobrin; I. A. Korzhavina; V. A. Kuzmin; O. Yu. Lukina; A. S. Proskuryakov; A. A. Savin; L. M. Shcheglova; A. N. Solomin; N. P. Zotov; M. Botje; F. Chlebana; J. Engelen; M. de Kamps; P. Kooijman; A. Kruse; A. van Sighem; H. Tiecke; W. Verkerke; J. Vossebeld; M. Vreeswijk; L. Wiggers; E. de Wolf; R. van Woudenberg; D. Acosta; B. Bylsma; L. S. Durkin; J. Gilmore; C. Li; T. Y. Ling; P. Nylander; I. H. Park; T. A. Romanowski; D. S. Bailey; R. J. Cashmore; A. M. Cooper-Sarkar; R. C. E. Devenish; N. Harnew; M. Lancaster; L. Lindemann; J. D. McFall; C. Nath; V. A. Noyes; A. Quadt; J. R. Tickner; H. Uijterwaal; R. Walczak; D. S. Waters; F. F. Wilson; T. Yip; A. Bertolin; R. Brugnera; R. Carlin; F. Dal Corso; M. de Giorgi; U. Dosselli; S. Limentani; M. Morandin; M. Posocco; L. Stanco; R. Stroili; C. Voci; F. Zuin; J. Bulmahn; R. G. Feild; B. Y. Oh; J. J. Whitmore; G. D'Agostini; G. Marini; A. Nigro; J. C. Hart; N. A. McCubbin; T. P. Shah; E. Barberis; T. Dubbs; C. Heusch; M. van Hook; W. Lockman; J. T. Rahn; H. F.-W. Sadrozinski; A. Seiden; D. C. Williams; J. Biltzinger; R. J. Seifert; O. Schwarzer; A. H. Walenta; H. Abramowicz; G. Briskin; S. Dagan; A. Levy; J. I. Fleck; M. Inuzuka; T. Ishii; M. Kuze; S. Mine; M. Nakao; I. Suzuki; K. Tokushuku; K. Umemori; S. Yamada; Y. Yamazaki; M. Chiba; R. Hamatsu; T. Hirose; K. Homma; S. Kitamura; T. Matsushita; K. Yamauchi; R. Cirio; M. Costa; M. I. Ferrero; S. Maselli; C. Peroni; R. Sacchi; A. Solano; A. Staiano; M. Dardo; D. C. Bailey; F. Benard; M. Brkic; C.-P. Fagerstroem; G. F. Hartner; K. K. Joo; G. M. Levman

1996-01-01

130

Storm Track Dynamics  

Microsoft Academic Search

This paper reviews the current state of observational, theoretical, and modeling knowledge of the midlatitude storm tracks of the Northern Hemisphere cool season.Observed storm track structures and variations form the first part of the review. The climatological storm track structure is described, and the seasonal, interannual, and interdecadal storm track variations are discussed. In particular, the observation that the Pacific

Edmund K. M. Chang; Sukyoung Lee; Kyle L. Swanson

2002-01-01

131

A comparison of the case flow management and case tracking systems of the Central Administrative Court of Thailand with those of the Federal Court of Australia, with reference to practice in the USA  

Microsoft Academic Search

Case flow management (CFM) is recognised as an essential component for the success of the overall management in contemporary courts. Case flow management programmes are adopted and implemented in many courts and tribunals across many nations to improve the courts? supervision of time and events from the beginning of cases to their finalisation. The case tracking system (CTS) is the

Natacha Vsindilok

2004-01-01

132

Cluster-based distributed face tracking in camera networks.  

PubMed

In this paper, we present a distributed multicamera face tracking system suitable for large wired camera networks. Unlike previous multicamera face tracking systems, our system does not require a central server to coordinate the entire tracking effort. Instead, an efficient camera clustering protocol is used to dynamically form groups of cameras for in-network tracking of individual faces. The clustering protocol includes cluster propagation mechanisms that allow the computational load of face tracking to be transferred to different cameras as the target objects move. Furthermore, the dynamic election of cluster leaders provides robustness against system failures. Our experimental results show that our cluster-based distributed face tracker is capable of accurately tracking multiple faces in real-time. The overall performance of the distributed system is comparable to that of a centralized face tracker, while presenting the advantages of scalability and robustness. PMID:20423804

Yoder, Josiah; Medeiros, Henry; Park, Johnny; Kak, Avinash C

2010-10-01

133

TrackEye tracking algorithm characterization  

NASA Astrophysics Data System (ADS)

TrackEye is a film digitization and target tracking system that offers the potential for quantitatively measuring the dynamic state variables (e.g., absolute and relative position, orientation, linear and angular velocity/acceleration, spin rate, trajectory, angle of attack, etc.) for moving objects using captured single or dual view image sequences. At the heart of the system is a set of tracking algorithms that automatically find and quantify the location of user selected image details such as natural test article features or passive fiducials that have been applied to cooperative test articles. This image position data is converted into real world coordinates and rates with user specified information such as the image scale and frame rate. Though tracking methods such as correlation algorithms are typically robust by nature, the accuracy and suitability of each TrackEye tracking algorithm is in general unknown even under good imaging conditions. The challenges of optimal algorithm selection and algorithm performance/measurement uncertainty are even more significant for long range tracking of high-speed targets where temporally varying atmospheric effects degrade the imagery. This paper will present the preliminary results from a controlled test sequence used to characterize the performance of the TrackEye tracking algorithm suite.

Valley, Michael T.; Shields, Robert W.; Reed, Jack M.

2004-10-01

134

TrackEye tracking algorithm characterization.  

SciTech Connect

TrackEye is a film digitization and target tracking system that offers the potential for quantitatively measuring the dynamic state variables (e.g., absolute and relative position, orientation, linear and angular velocity/acceleration, spin rate, trajectory, angle of attack, etc.) for moving objects using captured single or dual view image sequences. At the heart of the system is a set of tracking algorithms that automatically find and quantify the location of user selected image details such as natural test article features or passive fiducials that have been applied to cooperative test articles. This image position data is converted into real world coordinates and rates with user specified information such as the image scale and frame rate. Though tracking methods such as correlation algorithms are typically robust by nature, the accuracy and suitability of each TrackEye tracking algorithm is in general unknown even under good imaging conditions. The challenges of optimal algorithm selection and algorithm performance/measurement uncertainty are even more significant for long range tracking of high-speed targets where temporally varying atmospheric effects degrade the imagery. This paper will present the preliminary results from a controlled test sequence used to characterize the performance of the TrackEye tracking algorithm suite.

Reed, Jack W.; Shields, Rob W; Valley, Michael T.

2004-08-01

135

27. INTERIOR VIEW OF DRAWTENDER'S SHACK LOOKING AT MAIN TRACK ...  

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

27. INTERIOR VIEW OF DRAWTENDER'S SHACK LOOKING AT MAIN TRACK AND SIGNAL CONTROL LEVERS AND INDICATOR LIGHTS - Central Railroad of New Jersey, Newark Bay Lift Bridge, Spanning Newark Bay, Newark, Essex County, NJ

136

Beartracker's Animal Tracks Den  

NSDL National Science Digital Library

Beartracker's Animal Tracks Den is an excellent comprehensive "online field guide to tracks and tracking." The site includes animal track images, photos, as well as information about mammals, reptiles, birds, insects, amphibians, and other tracking resources. Most of the animals featured on the site are inhabitants of North America. Images of animal tracks also contain descriptions to help users become familiar with the distinctive qualities of each animal's print. This is an excellent resource for nature enthusiasts, animal search and rescue trackers, and everyone in between.

137

Centrality Indices  

Microsoft Academic Search

\\u000a Centrality indices are to quantify an intuitive feeling that in most networks some vertices or edges are more central than\\u000a others. Many vertex centrality indices were introduced for the first time in the 1950s: e.g., the Bavelas index [50, 51],\\u000a degree centrality [483] or a first feedback centrality, introduced by Seeley [510]. These early centralities raised a rush\\u000a of research

Dirk Koschützki; Katharina Anna Lehmann; Leon Peeters; Stefan Richter; Dagmar Tenfelde-podehl; Oliver Zlotowski

2004-01-01

138

Track and Field Dynamics. Second Edition.  

ERIC Educational Resources Information Center

Track and field coaching is considered an art embodying three sciences--physiology, psychology, and dynamics. It is the area of dynamics, the branch of physics that deals with the action of force on bodies, that is central to this book. Although the book does not cover the entire realm of dynamics, the laws and principles that relate directly to…

Ecker, Tom

139

VISUAL INSPECTION OF RAILROAD TRACKS PAVEL BABENKO  

E-print Network

VISUAL INSPECTION OF RAILROAD TRACKS by PAVEL BABENKO M.S. University of Central Florida, 2006 for measurement of rail gauge, and reliable identification and localization of structural defects in railroad in the panorama buffer. We employ the method which detects railroad crossings or forks in the panorama buffer

Central Florida, University of

140

The minitrack tracking function description, volume 1  

NASA Technical Reports Server (NTRS)

The treatment of tracking data by the Minitrack system is described from the transmission of the nominal 136-MHz radio beacon energy from a satellite and the reception of this signal by the interferometer network through the ultimate derivation of the direction cosines (the angular coordinates of the vector from the tracking station to the spacecraft) as a function of time. Descriptions of some of the lesser-known functions operating on the system, such as the computer preprocessing program, are included. A large part of the report is devoted to the preprocessor, which provides for the data compression, smoothing, calibration correction, and ambiguity resolution of the raw interferometer phase tracking measurements teletyped from each of the worldwide Minitrack tracking stations to the central computer facility at Goddard Space Flight Center. An extensive bibliography of Minitrack hardware and theory is presented.

Englar, T. S., Jr.; Mango, S. A.; Roettcher, C. A.; Watters, D. L.

1973-01-01

141

Sex-Offender Tracking  

MedlinePLUS

... Safety & Prevention Law Enforcement Training Victim & Family Support Sex Offender Tracking The primary goal of the National Center for Missing & Exploited Children ® ’s Sex Offender Tracking Team ® (SOTT) is to provide assistance ...

142

Introduction Object Tracking  

E-print Network

;Introduction ­ Vehicle Tracking Object Track vehicles on a highway Count them Implementation Real-time OpenCV with Shadow Detection" OpenCV implementation (without shadow detection) #12;Theory ­ Segmentation Background

Anderson, Charles H.

143

Feature Tracking Factorization  

E-print Network

Feature Tracking KLT Tracker Enhancements to KLT Experimental Results Factorization Tomasi-Kanade Experimental Results Factorization Tomasi-Kanade Algorithm Experimental Results Conclusions References Outline Factorization Tomasi-Kanade Algorithm Experimental Results 4 Conclusions 5 References #12;Feature Tracking

North Carolina at Chapel Hill, University of

144

Track design and construction  

SciTech Connect

The 8 papers in the report deal with the following areas: research railroad ballast specification and evaluation; a proposed track performance index for control of freight car harmonic roll response; granular depth requirement for railroad track; demonstration of the rail energy-cost-analysis package: the route perspective (RECAP II); techniques for controlling rail corrugation; the evolution of Washington Metro's track standards; track rehabilitation and new construction in an operating environment at BART; and, estimates of rail-transit construction costs.

Raymond, G.P.; Weinstock, H.; Lee, H.S.; Greif, R.; Scott, J.F.

1985-01-01

145

Good Features to Track  

Microsoft Academic Search

No feature-based vision system can work unless goodfeatures can be identified and tracked from frame toframe. Although tracking itself is by and large a solvedproblem, selecting features that can be tracked well andcorrespond to physical points in the world is still hard.We propose a feature selection criterion that is optimalby construction because it is based on how the trackerworks, and

Jianbo Shi Carlo Tomasi

1994-01-01

146

Good features to track  

Microsoft Academic Search

No feature-based vision system can work until good features can be identified and tracked from frame to frame. Although tracking itself is by and large a solved problem, selecting features that can be tracked well and correspond to physical points in the world is still an open problem. We propose a feature selection criterion that is optimal by construction because

Jianbo Shi; C. Toamsi

1994-01-01

147

Solar tracking apparatus  

DOEpatents

The invention relates to a solar tracking device which tracks the position of the sun using paired, partially-shaded photocells. Auxiliary photocells are used for initial acquisition of the sun and for the suppression of false tracking when the sun is obscured by clouds.

Hammons, Burrell E. (Albuquerque, NM)

1980-01-01

148

Study of charged—current ep interactions at Q 2 >200 GeV 2 with the ZEUS detector at HERA  

Microsoft Academic Search

Deep inelastic charged-current reactions have been studied ine\\u000a +\\u000a p ande\\u000a ?\\u000a p collisions at a center of mass energy of about 300GeV in the kinematic regionQ\\u000a 2>200GeV2 andx>0.006 using the ZEUS detector at HERA. The integrated cross sections forQ\\u000a 2>200GeV2 are found to be $$\\\\sigma _{e^ + p \\\\to \\\\bar \\\

M. Derrick; D. Krakauer; S. Magill; D. Mikunas; B. Musgrave; J. R. Okrasinski; J. Repond; R. Stanek; R. L. Talaga; H. Zhang; M. C. K. Mattingly; P. Antonioli; G. Bari; M. Basile; L. Bellagamba; D. Boscherini; A. Bruni; G. Bruni; P. Bruni; G. Cara Romeo; G. Castellini; L. Cifarelli; F. Cindolo; A. Contin; M. Corradi; I. Gialas; P. Giusti; G. Iacobucci; G. Laurenti; G. Levi; A. Margotti; T. Massam; R. Nania; F. Palmonari; A. Pesci; A. Polini; G. Sartorelli; Y. Zamora Garcia; A. Zichichi; C. Amelung; A. Bornheim; J. Crittenden; R. Deffner; T. Doeker; M. Eckert; L. Feld; A. Frey; M. Geerts; M. Grothe; H. Hartmann; K. Heinloth; L. Heinz; E. Hilger; H.-P. Jakob; U. F. Katz; S. Mengel; E. Paul; M. Pfeiffer; Ch. Rembser; D. Schramm; J. Stamm; R. Wedemeyer; S. Campbell-Robson; A. Cassidy; W. N. Cottingham; N. Dyce; B. Foster; S. George; M. E. Hayes; G. P. Heath; H. F. Heath; D. Piccioni; D. G. Roff; R. J. Tapper; R. Yoshida; M. Arneodo; R. Ayad; M. Capua; A. Garfagnini; L. Iannotti; M. Schioppa; G. Susinno; A. Caldwell; N. Cartiglia; Z. Jing; W. Liu; J. A. Parsons; S. Ritz; F. Sciulli; P. B. Straub; L. Wai; S. Yang; Q. Zhu; P. Borzemski; J. Chwastowski; A. Eskreys; Z. Jakubowski; M. B. Przybycie?; M. Zachara; L. Zawiejski; L. Adamczyk; B. Bednarek; K. Jele?; D. Kisielewska; T. Kowalski; E. Rulikowska-Zar?bska; L. Suszycki; J. Zaj?c; Z. Duli?ski; A. Kota?ski; G. Abbiendi; L. A. T. Bauerdick; U. Behrens; H. Beier; J. K. Bienlein; G. Cases; O. Deppe; K. Desler; G. Drews; M. Flasi?ski; D. J. Gilkinson; C. Glasman; P. Göttlicher; J. Große-Knetter; T. Haas; W. Hain; D. Hasell; H. Heßling; Y. Iga; K. F. Johnson; P. Joos; M. Kasemann; R. Klanner; W. Koch; U. Kötz; H. Kowalski; J. Labs; A. Ladage; B. Löhr; M. Löwe; D. Lüke; J. Mainusch; O. Ma?czak; J. Milewski; T. Monteiro; J. S. T. Ng; D. Notz; K. Ohrenberg; K. Piotrzkowski; M. Roco; M. Rohde; J. Roldán; U. Schneekloth; W. Schulz; F. Selonke; B. Surrow; E. Tassi; T. Voß; D. Westphal; G. Wolf; U. Wollmer; C. Youngman; W. Zeuner; H. J. Grabosch; A. Kharchilava; S. M. Mari; A. Meyer; S. Schlenstedt; N. Wulff; G. Barbagli; E. Gallo; P. Pelfer; G. Maccarrone; S. De Pasquale; L. Votano; A. Bamberger; S. Eisenhardt; T. Trefzger; S. Wölfle; J. T. Bromley; N. H. Brook; P. J. Bussey; A. T. Doyle; D. H. Saxon; L. E. Sinclair; M. L. Utley; A. S. Wilson; A. Dannemann; U. Holm; D. Horstmann; R. Sinkus; K. Wick; B. D. Burow; L. Hagge; E. Lohrmann; G. Poelz; W. Schott; F. Zetsche; T. C. Bacon; N. Brümmer; I. Butterworth; V. L. Harris; G. Howell; B. H. Y. Hung; L. Lamberti; K. R. Long; D. B. Miller; N. Pavel; A. Prinias; J. K. Sedgbeer; D. Sideris; A. F. Whitfield; U. Mallik; M. Z. Wang; S. M. Wang; J. T. Wu; P. Cloth; D. Filges; S. H. An; G. H. Cho; B. J. Ko; S. B. Lee; S. W. Nam; H. S. Park; S. K. Park; S. Kartik; H.-J. Kim; R. R. McNeil; W. Metcalf; V. K. Nadendla; F. Barreiro; J. P. Fernandez; R. Graciani; J. M. Hernández; L. Hervás; L. Labarga; M. Martinez; J. del Peso; J. Puga; J. Terron; J. F. de Trocóniz; F. Corriveau; D. S. Hanna; J. Hartmann; L. W. Hung; J. N. Lim; C. G. Matthews; P. M. Patel; M. Riveline; D. G. Stairs; M. St-Laurent; R. Ullmann; G. Zacek; T. Tsurugai; V. Bashkirov; B. A. Dolgoshein; A. Stifutkin; G. L. Bashindzhagyan; P. F. Ermolov; L. K. Gladilin; Yu. A. Golubkov; V. D. Kobrin; I. A. Korzhavina; V. A. Kuzmin; O. Yu. Lukina; A. S. Proskuryakov; A. A. Savin; L. M. Shcheglova; A. N. Solomin; N. P. Zotov; M. Botje; F. Chlebana; J. Engelen; M. de Kamps; P. Kooijman; A. Kruse; A. van Sighem; H. Tiecke; W. Verkerke; J. Vossebeld; M. Vreeswijk; L. Wiggers; E. de Wolf; R. van Woudenberg; D. Acosta; B. Bylsma; L. S. Durkin; J. Gilmore; C. Li; T. Y. Ling; P. Nylander; I. H. Park; T. A. Romanowski; D. S. Bailey; R. J. Cashmore; A. M. Cooper-Sarkar; R. C. E. Devenish; N. Harnew; M. Lancaster; L. Lindemann; J. D. McFall; C. Nath; V. A. Noyes; A. Quadt; J. R. Tickner; H. Uijterwaal; R. Walczak; D. S. Waters; F. F. Wilson; T. Yip; A. Bertolin; R. Brugnera; R. Carlin; F. Dal Corso; M. De Giorgi; U. Dosselli; S. Limentani; M. Morandin; M. Posocco; L. Stanco; R. Stroili; C. Voci; F. Zuin; J. Bulmahn; R. G. Feild; B. Y. Oh; J. J. Whitmore; G. D’Agostini; G. Marini; A. Nigro; J. C. Hart; N. A. McCubbin; T. P. Shah; E. Barberis; T. Dubbs; C. Heusch; M. Van Hook; W. Lockman; J. T. Rahn; H. F.-W. Sadrozinski; A. Seiden; D. C. Williams; J. Biltzinger; R. J. Seifert; O. Schwarzer; A. H. Walenta; H. Abramowicz; G. Briskin; S. Dagan; A. Levy; J. I. Fleck; M. Inuzuka; T. Ishii; M. Kuze; S. Mine; M. Nakao; I. Suzuki; K. Tokushuku; K. Umemori; S. Yamada; Y. Yamazaki; M. Chiba; R. Hamatsu; T. Hirose; K. Homma; S. Kitamura; T. Matsushita; K. Yamauchi; R. Cirio; M. Costa; M. I. Ferrero; S. Maselli; C. Peroni; R. Sacchi; A. Solano; A. Staiano; M. Dardo; D. C. Bailey; F. Benard; M. Brkic; C.-P. Fagerstroem; G. F. Hartner; K. K. Joo

1996-01-01

149

Charged Particle Tracking and Vertex Detection Group summary report  

SciTech Connect

Charged particle tracking is essential in order to investigate the new physics expected at the SSC. The Tracking Group studied radiation damage and rate limitations to tracking devices, vertex detectors, and central tracking. The Group concluded that silicon strips and large wire tracking chambers with small cells can probably survive at the design luminosity of 10/sup 33/ cm/sup -2/ sec/sup -1/; however, the presently designed electronics for silicon strip vertex detectors can withstand a luminosity of only 10/sup 31/ cm/sup -2/ sec/sup -1/. Wire chambers at a radius of less than about 25 cm can withstand a luminosity of less than or equal to 10/sup 32/ cm/sup -2/ sec/sup -1/ only. Actual tracking and pattern recognition in central tracking chambers at a luminosity of 10/sup 33/ cm/sup -2/ sec/sup -1/ will be very difficult because of multiple interactions within the resolving time of the chambers; detailed simulations are needed in order to decide whether tracking is indeed possible at this luminosity. Scintillating glass fibers are an interesting possibility both for vertex detectors and for central trackers, but much research and development is still needed both on the fibers themselves and on the readout.

Hanson, G.; Meyer, D.

1984-09-01

150

Performance Assessment of Tracking Systems  

Microsoft Academic Search

This paper presents a new formalized procedure to assess the performance of automatic target tracking systems. The procedure involves comparing data output by a tracking system under test with track data in a truth file. The comparison of the data sources uses a total of 15 tracker performance metrics. These cover the categories of track initiation, track maintenance, track error

S. Bren Colegrove; L. M. Davis; S. J. Davey

1996-01-01

151

Fast Track: The Right Track for America  

NSDL National Science Digital Library

Fast Track is an advocacy site aimed at generating support for granting fast-track authority to the President. It contains articles and speeches in support of free trade. Recently, the debate over free trade has intensified in light of the failure of President Clinton to obtain fast-track authority from Congress. On September 17, 1997, President Clinton went against the liberals in his own party to request fast-track authority from Congress to negotiate new trade accords. The Senate approved the President's request for fast track on November 5, 1997 but the vote in the House was shelved when it appeared likely that fast-track would be defeated. The opponents of free-trade consist mainly of trade unions who are worried about the loss of jobs to countries with cheap labor, and environmentalists concerned about the effect of free trade on environmental standards. The supporters of free-trade are mainly businesses who see business potential in the larger market that would be created by expanding free trade.

1998-01-01

152

Star Inner and Forward Tracking Upgrade  

NASA Astrophysics Data System (ADS)

The STAR experiment at the Relativistic Heavy Ion Collider (RHIC) is planning a major tracking upgrade to prepare for the expected higher luminosity running of RHIC. This tracking upgrade will also enhance physics capabilities such as W physics with polarized proton beams and heavy flavor physics with heavy ion and polarized proton beams. The proposed upgrade will consist of a central barrel part and a forward disk part. Both barrel and disk parts will make extensive use of silicon strip sensors and Gas Electron Multiplier (GEM) detectors. In addition active pixel sensors will provide micro-vertexing close to the interaction point. The design of these new STAR detectors will be discussed.

van Nieuwenhuizen, Gerrit

2006-04-01

153

The STAR integrated tracking upgrade project  

NASA Astrophysics Data System (ADS)

The STAR experiment at the Relativistic Heavy Ion Collider RHIC has a rich physics program both for the study of relativistic heavy ion collisions and spin structure measurements with polarized protons. In order to improve the capabilities for heavy flavor measurements in heavy ion and polarized proton collisions and to allow the identification of the charge sign of W bosons produced in polarized proton collisions at 500 GeV, an upgrade of the tracking system both in the central and the forward region is pursued. The integrated system providing high-resolution tracking and secondary vertex reconstruction capabilities will use silicon pixel, strip and GEM technology.

Simon, Frank; STAR Collaboration

2007-08-01

154

Applications of high frequency radar for emergency response in the coastal ocean: utilization of the Central Gulf of Mexico Ocean Observing System during the Deepwater Horizon oil spill and vessel tracking  

Microsoft Academic Search

The value of surface current data from SeaSonde high frequency radars (HFR), operated by the Central Gulf of Mexico Ocean Observing System (CenGOOS), to NOAA's Deepwater Horizon (DwH) oil spill response is demonstrated. The national integration of HFR data, undertaken as part of the Integrated Ocean Observing System, allowed NOAA to seamlessly utilize the CenGOOS data in giving guidance, throughout

Stephan D. Howden; Don Barrick; Hector Aguilar

2011-01-01

155

Hurricanes 2: Tracking Hurricanes  

NSDL National Science Digital Library

The purpose of this lesson is to examine the role of technology in identifying and tracking hurricanes. It is the second in a two-part series on the science of hurricanes and the kinds of technology being used to identify and track them. Students broaden their study by exploring how technology and science are used today to identify, measure, and track powerful tropical storms to better warn and secure people from a hurricane's often-devastating impact.

2007-12-12

156

Sea Turtle Satellite Tracking  

NSDL National Science Digital Library

Near real-time tool for collecting, managing and sharing marine life satellite tracking data. Over 30 projects in US, Caribbean, Mediterranean, Indo-Pacific, and Australian waters. Provides links to background information for each project, the animals they are tracking, and maps that are updated regularly. Teaching resources include maps for tracking, suggestions for using data in lessons on geography, biology, earth science, math. Good introduction to satellite telemetry methodology and applications.

157

77 FR 33560 - Woodland Rail, LLC-Acquisition and Operation Exemption-Line of Maine Central Railroad Co.  

Federal Register 2010, 2011, 2012, 2013, 2014

...Acquisition and Operation Exemption--Line of Maine Central Railroad Co. Woodland Rail, LLC...Calais Industrial Track (the Line) from Maine Central Railroad Co. The Line is approximately...approximately 6.75 track miles located in Maine, and approximately 5.08 track...

2012-06-06

158

Track Segmentation and Identification  

E-print Network

as individual songs or movements, but rather as complete sheet music books or audio CD collections that usually to solving the task would be to compare the title headings found in the sheet music documents and CD trackChapter 6 Track Segmentation and Identification For the automatic organization of music documents

Clausen, Michael

159

Can Tracking Improve Learning?  

ERIC Educational Resources Information Center

Tracking students into different classrooms according to their prior academic performance is controversial among both scholars and policymakers. If teachers find it easier to teach a homogeneous group of students, tracking could enhance school effectiveness and raise test scores of both low- and high-ability students. If students benefit from…

Duflo, Esther; Dupas, Pascaline; Kremer, Michael

2009-01-01

160

Neuroscience Track Graduation Checklist  

E-print Network

Rev 9/12 Neuroscience Track Graduation Checklist Students entering the Neuroscience Track must have Neuroscience ___ Psych 392A: Junior Year Writing Seminar or two Psychology Honors courses ___ Psych 494RI ___ Psych 380: Abnormal Psychology 4. One of the following ___ Advanced neuroscience elective (at least 3

Massachusetts at Amherst, University of

161

Neuroscience Track Graduation Checklist  

E-print Network

Rev 1/13 Neuroscience Track Graduation Checklist Students entering the Neuroscience Track must have (should be completed by the end of 1st semester of Junior Year) ___ Psych 330: Behavioral Neuroscience 4. One of the following ___ Advanced neuroscience elective (at least 3 credits, 500 level or above

Massachusetts at Amherst, University of

162

Neuroscience Track Graduation Checklist  

E-print Network

Rev 1/12 Neuroscience Track Graduation Checklist Students entering the Neuroscience Track must have Neuroscience ___ Psych 392: Junior Year Writing Seminar or two Psychology Honors courses 2. Two 380: Abnormal Psychology 4. One of the following ___ Advanced neuroscience elective (at least 3

Massachusetts at Amherst, University of

163

Tracks and Tools  

Microsoft Academic Search

Recent discoveries in the Laetolil beds at Laetoli in northern Tanzania have revealed hominid tracks made by three individuals in a bed of cemented volcanic ash. The tracks extend for a distance of 27 m and indicate a fully upright, bipedal gait with weight distribution similar to that of modern man. A single trail proceeds alongside a dual trail in

Mary D. Leakey

1981-01-01

164

TMDL TRACKING SYSTEM  

EPA Science Inventory

Resource Purpose: The TMDL Tracking System database contains information on the waters listed under section 303(d) of the Clean Water Act and to track those listed waters through TMDL development. The purpose of the database is to allow EPA, the States/Territories/Tribes, ...

165

Stereoscopic Motion Tracking System  

Microsoft Academic Search

A Stereoscopic Motion Tracking System is being developed for use with a video game system for rehabilitation of children affected by Cerebral Palsy. Two cameras will be used to track the (x, y) locationof a motion, using stereoscopic principles this data will be used to calculate the Z locationof the motion. This data will be collected for the duration of

A. Calderon; M. Dembele; B. Hossain; Y. Noor; S. Ovsiew

2011-01-01

166

UWB Tracking Software Development  

NASA Technical Reports Server (NTRS)

An Ultra-Wideband (UWB) two-cluster Angle of Arrival (AOA) tracking prototype system is currently being developed and tested at NASA Johnson Space Center for space exploration applications. This talk discusses the software development efforts for this UWB two-cluster AOA tracking system. The role the software plays in this system is to take waveform data from two UWB radio receivers as an input, feed this input into an AOA tracking algorithm, and generate the target position as an output. The architecture of the software (Input/Output Interface and Algorithm Core) will be introduced in this talk. The development of this software has three phases. In Phase I, the software is mostly Matlab driven and calls C++ socket functions to provide the communication links to the radios. This is beneficial in the early stage when it is necessary to frequently test changes in the algorithm. Phase II of the development is to have the software mostly C++ driven and call a Matlab function for the AOA tracking algorithm. This is beneficial in order to send the tracking results to other systems and also to improve the tracking update rate of the system. The third phase is part of future work and is to have the software completely C++ driven with a graphics user interface. This software design enables the fine resolution tracking of the UWB two-cluster AOA tracking system.

Gross, Julia; Arndt, Dickey; Ngo, Phong; Phan, Chau; Dusl, John; Ni, Jianjun; Rafford, Melinda

2006-01-01

167

Dinosaur Tracks and Trackways  

NSDL National Science Digital Library

This University of Bristol page discusses the process and importance of studying dinosaur tracks and trackways. Beginning with footprint morphology and preservation, it covers track taphonomy, ichnotaxonomy, dinosaur posture and stance, behavior, gait and speed, paleoecology and how to identify the trackmaker. Links are provided for additional resources.

Myles McLeod

168

2 Tracks for Faculty  

ERIC Educational Resources Information Center

The academic work force has been transformed over the past several decades, less by design than out of expediency. In 1969, professors who were either tenured or tenure-track made up 78 percent of the faculty. Those working part time made up only 18.5 percent. By 2009, those proportions had almost flipped, with tenured and tenure-track making up…

Wilson, Robin

2012-01-01

169

Large scale tracking algorithms.  

SciTech Connect

Low signal-to-noise data processing algorithms for improved detection, tracking, discrimination and situational threat assessment are a key research challenge. As sensor technologies progress, the number of pixels will increase signi cantly. This will result in increased resolution, which could improve object discrimination, but unfortunately, will also result in a significant increase in the number of potential targets to track. Many tracking techniques, like multi-hypothesis trackers, suffer from a combinatorial explosion as the number of potential targets increase. As the resolution increases, the phenomenology applied towards detection algorithms also changes. For low resolution sensors, "blob" tracking is the norm. For higher resolution data, additional information may be employed in the detection and classfication steps. The most challenging scenarios are those where the targets cannot be fully resolved, yet must be tracked and distinguished for neighboring closely spaced objects. Tracking vehicles in an urban environment is an example of such a challenging scenario. This report evaluates several potential tracking algorithms for large-scale tracking in an urban environment.

Hansen, Ross L.; Love, Joshua Alan; Melgaard, David Kennett; Karelitz, David B.; Pitts, Todd Alan; Zollweg, Joshua David; Anderson, Dylan Z.; Nandy, Prabal; Whitlow, Gary L.; Bender, Daniel A.; Byrne, Raymond Harry

2015-01-01

170

Applications of high frequency radar for emergency response in the coastal ocean: utilization of the Central Gulf of Mexico Ocean Observing System during the Deepwater Horizon oil spill and vessel tracking  

NASA Astrophysics Data System (ADS)

The value of surface current data from SeaSonde high frequency radars (HFR), operated by the Central Gulf of Mexico Ocean Observing System (CenGOOS), to NOAA's Deepwater Horizon (DwH) oil spill response is demonstrated. The national integration of HFR data, undertaken as part of the Integrated Ocean Observing System, allowed NOAA to seamlessly utilize the CenGOOS data in giving guidance, throughout the event, on model choice for producing the trajectory forecasts for the spill. Additionally, the value of SeaSondes for response to other maritime emergency events, and to monitor vessels in real-time, under all weather conditions, and beyond-the-horizon, will be discussed. This ability to provide surface current data for a range of response efforts to maritime emergencies demonstrates the importance of extending the HFR coverage in the Gulf .

Howden, Stephan D.; Barrick, Don; Aguilar, Hector

2011-06-01

171

Interferometric tracking system for the tracking and data relay satellite  

NASA Technical Reports Server (NTRS)

This report documents construction and testing of the Interferometric Tracking System project developed under the NASA SBIR contract NAS5-30313. Manuals describing the software and hardware, respectively entitled: 'Field Station Guide to Operations' and 'Field Station Hardware Manual' are included as part of this final report. The objective of this contract was to design, build, and operate a system of three ground stations using Very Long Baseline Interferometry techniques to measure the TDRS orbit. The ground stations receive signals from normal satellite traffic, store these signals in co-located computers, and transmit the information via phone lines to a central processing site which correlates the signals to determine relative time delays. Measurements from another satellite besides TDRS are used to determine clock offsets. A series of such measurements will ultimately be employed to derive the orbital parameters, yielding positions accurate to within 50 meters or possibly better.

Effland, John E.; Knight, Curtis A.; Webber, John C.

1993-01-01

172

Tracking Data Structures for Postmortem Analysis (NIER Track)  

E-print Network

Tracking Data Structures for Postmortem Analysis (NIER Track) Xiao Xiao, Jinguo Zhou, Charles Zhang Department of Computer Science and Engineering Hong Kong University of Science and Technology {richardxx

Wu, Dekai

173

Extraction of the proton parton density functions using a NLO-QCD fit of the combined H1 and ZEUS inclusive DIS cross sections  

E-print Network

The combined HERA-I data set, of neutral and charged current inclusive cross-sections for $e^+p$ and $e^-p$ scattering, is used as the sole input for a next-to-leading order (NLO) QCD parton distribution function (PDF) fit. The consistent treatment of systematic uncertainties in the joint data set ensures that experimental uncertainties on the PDFs can be calculated without need for an increased $\\chi^2$ tolerance. This results in PDFs with greatly reduced experimental uncertainties compared to the separate analyses of the ZEUS and H1 experiments. Model uncertainties, including those arising from parametrization dependence, are also carefully considered. The resulting HERAPDFs have impressive precision compared to the global fits.

A M Cooper-Sarkar

2008-08-13

174

Geochronology Database for Central Colorado  

USGS Publications Warehouse

This database is a compilation of published and some unpublished isotopic and fission track age determinations in central Colorado. The compiled area extends from the southern Wyoming border to the northern New Mexico border and from approximately the longitude of Denver on the east to Gunnison on the west. Data for the tephrochronology of Pleistocene volcanic ash, carbon-14, Pb-alpha, common-lead, and U-Pb determinations on uranium ore minerals have been excluded.

Klein, T.L.; Evans, K.V.; deWitt, E.H.

2010-01-01

175

Satellite Tracking Threatened Species  

NSDL National Science Digital Library

The Patuxent Wildlife Research Center and NASA's Goddard Space Flight Center have combined forces to produce this Website on the use of satellite tracking to monitor migration routes of endangered birds. Targeting the general public, the site introduces readers to satellite tracking (using Direct Readout technology), offers animations of bird flight paths (see the section entitled Birdtracks), and gives additional information on birds (in the Bird Data Archives, select a bird and watch its flight path through time). While bird information is limited to several larger species (due to the size/weight of attached transmitters), the resource serves as a useful information base for anyone wishing to learn more about satellite tracking.

176

A stream-based classification of European cyclone tracks  

NASA Astrophysics Data System (ADS)

The geographical region from where a cyclone enters Europe appears to play an important role in generating certain weather extremes. Some of the most devastating European floods have been associated with type Vb cyclones as in August 2002 or June 2013 for example. On the other hand, gale force storms in Western-Continental Europe are usually caused by cyclones that propagate from the north-eastern Atlantic into Europe. A method is presented for tracking the paths of atmospheric cyclones with the ability to detect both linear and branching tracks. Cyclones are tracked at three atmospheric levels independently using the reanalysis data of NCEP1, ERA-40 and ERA-Interim over Europe in parts of the period 1948-2012. The cyclones are then classified by a new stream-based classification approach into nine types, on the basis of the geographic regions from where cyclones enter Central Europe. Results show that the total number of tracks identified from ERA-40 is about 25% larger than those from NCEP1 due to the higher spatial resolution. The ERA-40 data suggest that, at 700hPa, 80% of all tracks are linear as compared to 65% at sea level pressure (SLP) due to the smoother pressure patterns at higher atmospheric levels. So branching events are more frequent at the surface. The relative number of linear tracks is always largest in the data with the coarsest resolution at all levels. The classification indicates that the proportion of linear and branching tracks varies substantially between cyclone types. For example, the famous cyclone track type Vb has the highest ratio of complex (compound and merge/split) tracks with only 1/3 of linear cases at SLP (ERA-40). The new cyclone type catalogue established in this paper will be used for identifying the temporal behaviour of cyclone tracks in the context of changing weather extremes in Central Europe.

Hofstätter, Michael; Chimani, Barbara; Steinacker, Reinhold; Blöschl, Günther

2014-05-01

177

A binary conflict ascending price (BICAP) mechanism for the decentralized allocation of the right to use railroad tracks  

Microsoft Academic Search

The questions posed for study are motivated by controversies over how Sweden might change from a centralized system of railroad management to a decentralized system. The central rail administration, Banverket, will retain ownership and maintenance responsibility of the tracks, but will sell access to the tracks to private firms. The questions are about the mechanism that might accomplish this task.

Paul J. Brewer; Charles R. Plott

1996-01-01

178

Tracking Sea Otters  

USGS Multimedia Gallery

USGS sea otter researcher Tim Tinker drives the boat on an expedition to track and observe sea otters in Monterey Bay, California. USGS scientists study sea otters in efforts to help the threatened species continue to recover from near extinction....

179

Energy Tracking Software Platform  

SciTech Connect

Acceleration has created an interactive energy tracking and visualization platform that supports decreasing electric, water, and gas usage. Homeowners have access to tools that allow them to gauge their use and track progress toward a smaller energy footprint. Real estate agents have access to consumption data, allowing for sharing a comparison with potential home buyers. Home builders have the opportunity to compare their neighborhood's energy efficiency with competitors. Home energy raters have a tool for gauging the progress of their clients after efficiency changes. And, social groups are able to help encourage members to reduce their energy bills and help their environment. EnergyIT.com is the business umbrella for all energy tracking solutions and is designed to provide information about our energy tracking software and promote sales. CompareAndConserve.com (Gainesville-Green.com) helps homeowners conserve energy through education and competition. ToolsForTenants.com helps renters factor energy usage into their housing decisions.

Ryan Davis; Nathan Bird; Rebecca Birx; Hal Knowles

2011-04-04

180

Tracking Polar Bears  

NSDL National Science Digital Library

In this interactive activity adapted from the USGS Alaska Science Center, track the movements of a polar bear as it migrates across the changing Arctic sea ice and compare the paths of four different polar bears.

2008-01-17

181

Airship attitude tracking system  

Microsoft Academic Search

The attitude tracking control problem for an airship with parameter uncertainties and external disturbances was considered\\u000a in this paper. The mathematical model of the airship attitude is a multi-input\\/multi-output uncertain nonlinear system. Based\\u000a on the characteristics of this system, a design method of robust output tracking controllers was adopted based on the upper-bounds\\u000a of the uncertainties. Using the input\\/output feedback

Xiao-liang Wang; Xue-xiong Shan

2006-01-01

182

MATERIAL TRACKING USING LANMAS  

SciTech Connect

LANMAS is a transaction-based nuclear material accountability software product developed to replace outdated and legacy accountability systems throughout the DOE. The core underlying purpose of LANMAS is to track nuclear materials inventory and report transactions (movement, mixing, splitting, decay, etc.) to the Nuclear Materials Management and Safeguards System (NMMSS). While LANMAS performs those functions well, there are many additional functions provided by the software product. As a material is received onto a site or created at a site, its entire lifecycle can be tracked in LANMAS complete to its termination of safeguards. There are separate functions to track material movements between and within material balance areas (MBAs). The level of detail for movements within a MBA is configurable by each site and can be as high as a site designation or as detailed as building/room/rack/row/position. Functionality exists to track the processing of materials, either as individual items or by modeling a bulk process as an individual item to track inputs and outputs from the process. In cases where sites have specialized needs, the system is designed to be flexible so that site specific functionality can be integrated into the product. This paper will demonstrate how the software can be used to input material into an account and track it to its termination of safeguards.

Armstrong, F.

2010-06-07

183

Curvelet transform based object tracking  

Microsoft Academic Search

In this paper, we have proposed a new object tracking method in video sequences which is based on curvelet transform. The wavelet transform has widely been used for object tracking purpose, but it cannot well describe curve discontinuities. We have used curvelet transform for tracking. Tracking is done using energy of curvelet coefficients in sequence of frames. This method is

Swati Nigam; Ashish Khare

2010-01-01

184

Central Park  

NSDL National Science Digital Library

As one of the worldâ??s greatest urban green spaces, Central Park is loved by dyed-in-the wool New Yorkers as well as visitors to the city. This reverential website provides detailed information about this fine public space and the activities that take place within its confines. On this site, visitors can look over maps of the park, learn about the parkâ??s many attractions, and browse a selection of photographs of this fine urban paradise. The homepage contains much of this material, along with a â??Central Park Newsâ? feature, which provides news updates about goings on throughout Central Park. For those planning a visit to the park, the Events area will be most useful, as it provides information about such pastimes as rock climbing, ice skating lessons, and yoga.

2006-01-01

185

Tracks to therapy  

NASA Technical Reports Server (NTRS)

Studies of the structure of particle tracks have led to models of track effects based on radial dose and radiobiological target theory that have been very successful in describing and predicting track effects in physical, chemical, and biological systems. For describing mammalian cellular inactivation two inactivation modes are required, called gamma-kill and ion-kill, the first due to synergistic effects of delta rays from adjacent ion paths thus resembling the effects from gamma rays, and the second to the effects of single ion transits through a cell nucleus. The ion-kill effect is more severe, where the fraction of cells experiencing ion kill is responsible for a decrease in the oxygen enhancement ratio, and an increase in relative biological effectiveness, but these are accompanied by loss of repair, hence to a reduction in the efficiency of fractionation in high LET therapy, as shown by our calculations for radiobiological effects in the "spread out Bragg Peak".

Katz, R.; Cucinotta, F. A.

1999-01-01

186

NASA: Satellite Tracking  

NSDL National Science Digital Library

While NASA has offered a number of fine sites about their research for the general public over the years, this particular site may be one of their best. With a minimum of fuss, visitors can use several of the online tracking applications offered here to locate hundreds of satellites and other such large objects in space. A good way to start a visit to this site is by taking a look at the J-Track 2.5 section, as it offers a quick way to find out the current location of the Space Station and the Chandra X-Ray Observatory. Additionally, visitors can also locate weather satellites using this application. The Live 3D Java Tracking Display here allows visitors to monitor close to 700 satellites that are in motion around the earth. Finally, visitors can also use a handy application offered here that allows them to determine which satellites might be seen from their location in the night sky.

2005-01-01

187

Track recording plastic compositions  

NASA Technical Reports Server (NTRS)

Improved nuclear track recording plastic compositions are provided which exhibit greatly decreased surface roughness when etched to produce visible tracks of energetic nuclear particles which have passed into and/or through said plastic. The improved compositions incorporate a small quantity of a phthalic acid ester into the major plastic component which is derived from the polymerization of monomeric di-ethylene glycol bis allyl carbonate. Di-substituted phthalic acid esters are preferred as the added component, with the further perference that the ester substituent has a chain length of 2 or more carbon atoms. The inclusion of the phthalic acid ester to an extent of from about 1-2% by weight of the plastic compositions is sufficient to drastically reduce the surface roughness ordinarily produced when the track recording plastic is contacted by etchants.

Tarle, Gregory (Inventor)

1983-01-01

188

Orographic Influences on Rainfall and Track Deflection Associated with the Passage of a Tropical Cyclone  

Microsoft Academic Search

In this study, a nonhydrostatic mesoscale model (Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPS)) was adopted to simulate Supertyphoon Bilis (2000) and investigate the dynamics of orographic rain and track deflection accompanying the storm as it passes the Central Mountain Range (CMR) of Taiwan. Both the storm track and its associated orographic rainfall distribution are well predicted by the numerical model.

Yuh-Lang Lin; Darrell B. Ensley; Sen Chiao; Ching-Yuang Huang

2002-01-01

189

National Environmental Performance Track  

NSDL National Science Digital Library

The US Environmental Protection Agency (EPA) has launched the new National Environmental Performance Track program, designed to "reward companies which exceed minimum regulatory requirements and take extra steps to reduce and prevent pollution." Potential award recipients include private and public companies or facilities that have performed beyond legal environmental/ health compliance requirements. The National Environmental Performance Track homepage briefly describes the new program, including requirements, benefits, and current participants. Although some sections of the site are still under construction, most of the critical information is provided here, including application forms. Note that companies/ facilities interested in attaining special Charter Membership status have until September 30 to apply.

190

Track My Life  

NSDL National Science Digital Library

Where does all the time go? It's a good question, and Track My Life can help you learn more about how and where your time is spent. The application runs in the background of a user's phone and tracks how much time they spend in any given location. At the end of each day, users can look at a full report to see a breakdown of the places they were and how long they spent in each location. This version is compatible with iPhone, Windows Phone, and Android.

2012-01-01

191

Spin tracking in RHIC  

SciTech Connect

In the acceleration of polarized protons in RHIC many spin depolarizing resonances are encountered. Helical Siberian snakes will be used to overcome depolarizing effects. The behavior of polarization can be studied by numerical tracking in a model accelerator. That allows one to check the strength of the resonances, to study the effect of snakes, to find safe lattice tune regions, and finally to study the operation of special devices like spin flippers. In this paper the authors describe numerical spin tracking. Results show that, for the design corrected distorted orbit and the design beam emittance, the polarization of the beam will be preserved in the whole range of proton energies in RHIC.

Luccio, A.U. [Brookhaven National Lab., Upton, NY (United States); Katayama, T. [Univ. of Tokyo (Japan); Wu, H. [Riken Inst., Tokyo (Japan)

1997-07-01

192

Computationally efficient Bayesian tracking  

NASA Astrophysics Data System (ADS)

In this paper, we describe the progress we have achieved in developing a computationally efficient, grid-based Bayesian fusion tracking system. In our approach, the probability surface is represented by a collection of multidimensional polynomials, each computed adaptively on a grid of cells representing state space. Time evolution is performed using a hybrid particle/grid approach and knowledge of the grid structure, while sensor updates use a measurement-based sampling method with a Delaunay triangulation. We present an application of this system to the problem of tracking a submarine target using a field of active and passive sonar buoys.

Aughenbaugh, Jason; La Cour, Brian

2012-06-01

193

Simple front tracking  

SciTech Connect

A new and simplified front tracking algorithm has been developed as an aspect of the extension of this algorithm to three dimensions. Here the authors emphasize two main results: (1) a simplified description of the microtopology of the interface, based on interface crossings with cell block edges, and (2) an improved algorithm for the interaction of a tracked contact discontinuity with an untracked shock wave. For the latter question, they focus on the post interaction jump at the contact, which is a purely 1D issue. Comparisons to other methods, including the level set method, are included.

Glimm, J.; Grove, J.W.; Li, X.; Zhao, N.

1999-04-01

194

Standards-based tracking  

NASA Astrophysics Data System (ADS)

Automated moving object detection and tracking are becoming cornerstone technologies for the proliferation of video and wide-area persistent surveillance systems. Emerging wide-area persistent surveillance platforms promise increasingly long periods of surveillance and increasingly wide areas of coverage with increasingly high-detail imagery over the entire area of interest, but the volume of data collected threatens to overwhelm our ability to understand the implications of the data. This paper describes a standards-based metadata architecture to support development of advanced automated movement detection and tracking capabilities - and ultimately "activity" recognition - to help the human observer bring the data volume under control.

Antonisse, Jim; Randall, Scott

2011-06-01

195

GEOS-3 Doppler difference tracking  

NASA Technical Reports Server (NTRS)

The Doppler difference method as applied to track the GEOS 3 spacecraft is discussed. In this method a pair of 2 GHz ground tracking stations simultaneously track a spacecraft beacon to generate an observable signal in which bias and instability of the carrier frequency cancel. The baselines are formed by the tracking sites at Bermuda, Rosman, and Merritt Island. Measurements were made to evaluate the effectiveness of the Doppler differencing procedure in tracking a beacon target with the high dynamic rate of the GEOS 3 orbit. Results indicate the precision of the differenced data to be at a level comparable to the conventional precise two way Doppler tracking.

Rosenbaum, B.

1977-01-01

196

@central park  

NSDL National Science Digital Library

The Central Park Conservancy, a not-for-profit organization dedicated to restoring, improving, and managing Central Park's grounds and facilities, offers this "official" site, which contains a wealth of information about what is arguably the world's most famous city park. Each of the site's sections contains useful or interesting information; the Then & Now section, for instance, offers an overview of Central Park's history, a bibliography with 43 entries for those seeking further information, and a list of movies with scenes set in the park. Another highlight of the site is the Virtual Park, which consists of a set of clickable maps through which users can explore 72 points of interest, each described in the affectionate style of a travel guidebook. The site's other sections include such features as events schedules, press releases, information on when and where particular varieties of flowers bloom, and a section devoted entirely to activities for families and children. This site will be especially useful to those who are planning a visit to Central Park, but other users will likely find it informative and entertaining as well.

197

Central Chile  

NASA Technical Reports Server (NTRS)

The beginning of spring in central Chile looked like this to SeaWiFS. The snow-covered Andes mark the country's eastern border, and phytoplankton blooms and river sediment plumes fill the waters off its west coast. A large eddy due west of Concepcion is highlighted by the phytoplankton it contains.

2002-01-01

198

Engineering Central  

NSDL National Science Digital Library

The Engineering Central website provides a plethora of listings of employment resources for engineers. The website allows users to submit their resume to a resume bank, browse through entry-level jobs, as well as post jobs online. Several links that point to other engineering resources are also provided.

199

Cicada Central  

NSDL National Science Digital Library

This site, hosted by University of Connecticut, "is designed to be a center for the exchange of scientific information concerning cicadas of the world." This Cicada Central website links to reprints for scientific literature concerning cicadas, a list of cicada researchers from around the world, a list of world cicada tribes, and more.

Simon, Chris

200

Halloween Central  

NSDL National Science Digital Library

Halloween is coming up, and this site will help readers prepare for an evening of ghouls, goblins, and other nasties. Halloween Central is a fairly extensive metasite with links to a wide variety of Halloween resources, including costumes, clip art, recipes, haunted houses, Halloween safety, and pumpkins, among many others.

201

DETAIL OF CONSOLE, SHOWING TRACK CONTROL FOR TRACKS BEHIND NEW ...  

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

DETAIL OF CONSOLE, SHOWING TRACK CONTROL FOR TRACKS BEHIND NEW HAVEN STATION, CAMERA FACING NORTHWEST. - New Haven Rail Yard, Interlocking Control Building, Vicinity of Union Avenue, New Haven, New Haven County, CT

202

Buddy tracking --efficient proximity detection among mobile friends  

E-print Network

networks are making it possible to track individual users with an increasing accuracy. It is natural to ask for the peer-to-peer model can naturally accommodate a different vicinity radius for each pair of friends the individual users in a peer-to-peer fashion or by centralized servers where computation and data can

Efrat, Alon

203

BlueTrack - Imperceptible Tracking of Bluetooth Devices  

Microsoft Academic Search

Abstract: Bluetooth enabled devices are potentially vulnerableagainst passive tracking attacks because of their unique andinvariant device address. The contribution of this paper isthe exploration of tracking vulnerability of Bluetooth devices.We implemented BlueTrack, a tracking system basedon off-the-shelf components. We tested our system at twosites, at a university building with several lecture roomsand at a CeBIT 2004 exhibition stand. The results

Marc Haase; Matthias Handy

2004-01-01

204

Deep inelastic inclusive and diffractive scattering at Q values from 25 to 320 GeV 2 with the ZEUS forward plug calorimeter  

NASA Astrophysics Data System (ADS)

Deep inelastic scattering and its diffractive component, ep?e?p?eXN, have been studied at HERA with the ZEUS detector using an integrated luminosity of 52.4 pb -1. The M method has been used to extract the diffractive contribution. A wide range in the centre-of-mass energy W (37-245 GeV), photon virtuality Q (20-450 GeV 2) and mass M (0.28-35 GeV) is covered. The diffractive cross section for 2

Chekanov, S.; Derrick, M.; Magill, S.; Musgrave, B.; Nicholass, D.; Repond, J.; Yoshida, R.; Mattingly, M. C. K.; Jechow, M.; Pavel, N.; Antonioli, P.; Bari, G.; Bellagamba, L.; Boscherini, D.; Bruni, A.; Bruni, G.; Cindolo, F.; Corradi, M.; Iacobucci, G.; Margotti, A.; Nania, R.; Polini, A.; Antonelli, S.; Basile, M.; Bindi, M.; Cifarelli, L.; Contin, A.; De Pasquale, S.; Sartorelli, G.; Zichichi, A.; Bartsch, D.; Brock, I.; Hartmann, H.; Hilger, E.; Jakob, H.-P.; Jüngst, M.; Nuncio-Quiroz, A. E.; Paul, E.; Renner, R.; Samson, U.; Schönberg, V.; Shehzadi, R.; Wlasenko, M.; Brook, N. H.; Heath, G. P.; Morris, J. D.; Capua, M.; Fazio, S.; Mastroberardino, A.; Schioppa, M.; Susinno, G.; Tassi, E.; Kim, J. Y.; Ibrahim, Z. A.; Kamaluddin, B.; Wan Abdullah, W. A. T.; Ning, Y.; Ren, Z.; Sciulli, F.; Chwastowski, J.; Eskreys, A.; Figiel, J.; Galas, A.; Gil, M.; Olkiewicz, K.; Stopa, P.; Zawiejski, L.; Adamczyk, L.; Bo?d, T.; Grabowska-Bo?d, I.; Kisielewska, D.; ?ukasik, J.; Przybycie?, M.; Suszycki, L.; Kota?ski, A.; S?omi?ski, W.; Behrens, U.; Blohm, C.; Bonato, A.; Borras, K.; Ciesielski, R.; Coppola, N.; Drugakov, V.; Fang, S.; Fourletova, J.; Geiser, A.; Göttlicher, P.; Grebenyuk, J.; Gregor, I.; Haas, T.; Hain, W.; Hüttmann, A.; Kahle, B.; Kasemann, M.; Katkov, I. I.; Klein, U.; Kötz, U.; Kowalski, H.; Lim, H.; Lobodzinska, E.; Löhr, B.; Mankel, R.; Melzer-Pellmann, I.-A.; Miglioranzi, S.; Montanari, A.; Namsoo, T.; Notz, D.; Parenti, A.; Rinaldi, L.; Roloff, P.; Rubinsky, I.; Santamarta, R.; Schneekloth, U.; Spiridonov, A.; Szuba, D.; Szuba, J.; Theedt, T.; Wolf, G.; Wrona, K.; Yagües Molina, A. G.; Youngman, C.; Zeuner, W.; Lohmann, W.; Schlenstedt, S.; Barbagli, G.; Gallo, E.; Pelfer, P. G.; Bamberger, A.; Dobur, D.; Karstens, F.; Vlasov, N. N.; Bussey, P. J.; Doyle, A. T.; Dunne, W.; Forrest, M.; Rosin, M.; Saxon, D. H.; Skillicorn, I. O.; Gialas, I.; Papageorgiu, K.; Holm, U.; Klanner, R.; Lohrmann, E.; Schleper, P.; Schörner-Sadenius, T.; Sztuk, J.; Stadie, H.; Turcato, M.; Foudas, C.; Fry, C.; Long, K. R.; Tapper, A. D.; Matsumoto, T.; Nagano, K.; Tokushuku, K.; Yamada, S.; Yamazaki, Y.; Barakbaev, A. N.; Boos, E. G.; Pokrovskiy, N. S.; Zhautykov, B. O.; Aushev, V.; Borodin, M.; Kozulia, A.; Lisovyi, M.; Son, D.; de Favereau, J.; Piotrzkowski, K.; Barreiro, F.; Glasman, C.; Jimenez, M.; Labarga, L.; del Peso, J.; Ron, E.; Soares, M.; Terrón, J.; Zambrana, M.; Corriveau, F.; Liu, C.; Schwartz, J.; Walsh, R.; Zhou, C.; Tsurugai, T.; Antonov, A.; Dolgoshein, B. A.; Gladkov, D.; Sosnovtsev, V.; Stifutkin, A.; Suchkov, S.; Dementiev, R. K.; Ermolov, P. F.; Gladilin, L. K.; Golubkov, Yu. A.; Khein, L. A.; Korzhavina, I. A.; Kuzmin, V. A.; Levchenko, B. B.; Lukina, O. Yu.; Proskuryakov, A. S.; Shcheglova, L. M.; Zotkin, D. S.; Abt, I.; Büttner, C.; Caldwell, A.; Kollar, D.; Reisert, B.; Schmidke, W. B.; Sutiak, J.; Grigorescu, G.; Keramidas, A.; Koffeman, E.; Kooijman, P.; Pellegrino, A.; Tiecke, H.; Vázquez, M.; Wiggers, L.; Brümmer, N.; Bylsma, B.; Durkin, L. S.; Lee, A.; Ling, T. Y.; Allfrey, P. D.; Bell, M. A.; Cooper-Sarkar, A. M.; Devenish, R. C. E.; Ferrando, J.; Foster, B.; Korcsak-Gorzo, K.; Oliver, K.; Patel, S.; Roberfroid, V.; Robertson, A.; Straub, P. B.; Uribe-Estrada, C.; Walczak, R.; Bertolin, A.; Dal Corso, F.; Dusini, S.; Longhin, A.; Stanco, L.; Bellan, P.; Brugnera, R.; Carlin, R.; Garfagnini, A.; Limentani, S.; Oh, B. Y.; Raval, A.; Ukleja, J.; Whitmore, J. J.; Iga, Y.; D'Agostini, G.; Marini, G.; Nigro, A.; Cole, J. E.; Hart, J. C.; Gabareen, A.; Ingbir, R.; Kananov, S.; Smith, O.; Stern, A.; Kuze, M.; Maeda, J.; Hori, R.; Kagawa, S.; Okazaki, N.; Shimizu, S.; Tawara, T.; Hamatsu, R.; Kaji, H.; Kitamura, S.; Ota, O.; Ri, Y. D.; Costa, M.; Ferrero, M. I.; Monaco, V.; Sacchi, R.; Solano, A.; Arneodo, M.; Ruspa, M.; Fourletov, S.; Martin, J. F.; Stewart, T. P.; Boutle, S. K.; Butterworth, J. M.; Gwenlan, C.; Jones, T. W.; Loizides, J. H.; Wing, M.; Brzozowska, B.; Ciborowski, J.; Grzelak, G.; Kulinski, P.; ?u?niak, P.; Malka, J.; Nowak, R. J.; Pawlak, J. M.; Tymieniecka, T.; Ukleja, A.; ?arnecki, A. F.; Adamus, M.; Plucinski, P.; Eisenberg, Y.; Hochman, D.; Karshon, U.; Brownson, E.; Danielson, T.; Everett, A.; Kçira, D.; Reeder, D. D.; Ryan, P.; Savin, A. A.; Smith, W. H.; Wolfe, H.; Bhadra, S.; Catterall, C. D.; Cui, Y.; Hartner, G.; Menary, S.; Noor, U.; Standage, J.; Whyte, J.; ZEUS Collaboration

205

Tracking Polar Bears  

USGS Multimedia Gallery

Movements of 9 satellite-collared adult female polar bears were tracked in February, 2010 by satellite telemetry. Bears were collared in 2007, 2008, and 2009 on the spring-time sea ice of the southern Beaufort Sea or on the autumn pack ice in 2009. Polar bear satellite telemetry data are shown with ...

206

MATERIAL TRACKING USING LANMAS  

Microsoft Academic Search

LANMAS is a transaction-based nuclear material accountability software product developed to replace outdated and legacy accountability systems throughout the DOE. The core underlying purpose of LANMAS is to track nuclear materials inventory and report transactions (movement, mixing, splitting, decay, etc.) to the Nuclear Materials Management and Safeguards System (NMMSS). While LANMAS performs those functions well, there are many additional functions

2010-01-01

207

Tracking Self into Place  

ERIC Educational Resources Information Center

In an effort to figure out what it means to educate "ecologically," I decided to track down some of the stories that I was living, telling and making as an educator. I ended up lost in the house of environmental education, stuck within the rooms of ecological science and political advocacy. Outside on the lawn sat the story of place based…

Piersol, Laura

2010-01-01

208

Projection approximation subspace tracking  

Microsoft Academic Search

Subspace estimation plays an important role in a variety of modern signal processing applications. We present a new approach for tracking the signal subspace recursively. It is based on a novel interpretation of the signal subspace as the solution of a projection like unconstrained minimization problem. We show that recursive least squares techniques can be applied to solve this problem

Bin Yang

1995-01-01

209

Tracking Through the Tulips  

NSDL National Science Digital Library

"Tiptoe Through the Tulips" was the theme song for kindergarten through second-grade students at Ashland City Primary in Ashland, Tennessee who participated in Journey North, a free, online educational program that enables sudents to track the blooming of tulips across the country as spring comes to North America.

Dorothy Davis

2005-04-01

210

Tracking in molecular bioimaging  

Microsoft Academic Search

This paper aims to simulate the application of more advanced computer vision techniques to tracking in biological molecular imaging by surveying the literature and sketching the current state of affairs in the field for a signal and image processing audience. After describing the basic principles of visualizing molecular dynamics in living cells and giving some examples of biological molecular dynamics

Erik Meijering; Ihor Smal; Gaudenz Danuser

2006-01-01

211

TRACKING Trounces Test Scores  

ERIC Educational Resources Information Center

This article presents an adaptation of an article from School Board News, January 6, 2004 edition. The article describes the effort of de-tracking students of varying ability levels, made by officials of South Side High School, in Rockville Centre, New York, and Noble High School, in North Berwick, Maine. Officials from both schools say that the…

Education Digest: Essential Readings Condensed for Quick Review, 2004

2004-01-01

212

Tracking Politics with POWER  

ERIC Educational Resources Information Center

Purpose: POWER is an ontology of political processes and entities. It is designed for tracking politicians, political organizations and elections, both in mainstream and social media. The aim of this paper is to propose a data model to describe political agents and their relations over time. Design/methodology/approach: The authors propose a data…

Moreira, Silvio; Batista, David S.; Carvalho, Paula; Couto, Francisco M.; Silva, Mario J.

2013-01-01

213

GPS Tracks Ground Deformation  

USGS Multimedia Gallery

USGS Field Engineer Ben Pauk records site and equipment information for the Global Positioning System (GPS) installed at the North Rim station in the Newberry National Volcanic Monument. The GPS records the precise position of the station, including latitude, longitude and elevation. Tracking subtle...

214

Tracking Weather Satellites.  

ERIC Educational Resources Information Center

Describes the use of weather satellites in providing an exciting, cohesive framework for students learning Earth and space science and in providing a hands-on approach to technology in the classroom. Discusses the history of weather satellites and classroom satellite tracking. (JRH)

Martin, Helen E.

1996-01-01

215

Tracking Sea Turtles  

NSDL National Science Digital Library

Classroom activity introduces the biology of sea turtles, population status, human impacts. Focuses on Kemp's ridley (Lepidochelys kempii), smallest and more endangered of sea turtle species. This teacher's guide provides NOAA tracking data and instructions for students to follow the migration routes of six turtles in the Gulf of Mexico. Links to related activities using satellite data.

216

Solar tracking device  

Microsoft Academic Search

Apparatus for directing a pointing axis at the position of the sun, and for tracking the relative motion of the sun from an observation point on earth from horizon to horizon with a single, constant speed driving mechanism. The apparatus comprises a first member aligned along the local vertical axis, a second member aligned along an intersecting polar axis, a

Volna

1980-01-01

217

RESEARCH TRACKING SYSTEM  

EPA Science Inventory

Resource Purpose: The Research Tracking System provides information on the status of research that is being conducted to support new drinking water standards. Presently, the database contains only M-DBP research. It will be expanded to include research on the contaminant ca...

218

Tracking Tyrannosaurus: Notes on Purported T. rex Tracks  

Microsoft Academic Search

Purported T. rex tracks (genus Tyrannosaurus) are rare and, if poorly preserved, difficult to identify or to distinguish with certainty from the tracks of hadrosaurs found in the same deposits. Six possible Tyrannosaurus tracks have been reported, five of which appear to be the right age, that is, Maastrichtian. However, at least two, including one that is pre-Maastrichtian, are interpreted

Martin Lockley; Paul R. Janke; Mike Triebold

2011-01-01

219

Integrated track splitting suite of target tracking filters  

Microsoft Academic Search

This paper presents new algorithms for mulfi-scan, single target and multi target tracking in clutter. The algorithms from the Integrated Track Splif- ring (ITS) family offilters model each track as a set of components, where each component has a unique meas- uremenf history which consists ofzero or one measure- men1 received each scan. For each componenf, as well as for

D. Muslicki; R. Evens; Barbara La Scala

2003-01-01

220

Laser-based pedestrian tracking in outdoor environments by multiple mobile robots.  

PubMed

This paper presents an outdoors laser-based pedestrian tracking system using a group of mobile robots located near each other. Each robot detects pedestrians from its own laser scan image using an occupancy-grid-based method, and the robot tracks the detected pedestrians via Kalman filtering and global-nearest-neighbor (GNN)-based data association. The tracking data is broadcast to multiple robots through intercommunication and is combined using the covariance intersection (CI) method. For pedestrian tracking, each robot identifies its own posture using real-time-kinematic GPS (RTK-GPS) and laser scan matching. Using our cooperative tracking method, all the robots share the tracking data with each other; hence, individual robots can always recognize pedestrians that are invisible to any other robot. The simulation and experimental results show that cooperating tracking provides the tracking performance better than conventional individual tracking does. Our tracking system functions in a decentralized manner without any central server, and therefore, this provides a degree of scalability and robustness that cannot be achieved by conventional centralized architectures. PMID:23202171

Ozaki, Masataka; Kakimuma, Kei; Hashimoto, Masafumi; Takahashi, Kazuhiko

2012-01-01

221

1. Copy of Drawing, 'American Steel & Wire Co., Central ...  

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

1. Copy of Drawing, 'American Steel & Wire Co., Central Furnace Works -- Sketch of Plant Showing Tracks & Buildings, 1913, Revised 3/10/31.' Drawing courtesy United States Steel Corporation, Lorain, Ohio. Credit Berni Rich, Score Photographs, August 1979, for photos 1 through 4 and 7 through 11. - Central Furnaces, 2650 Broadway, east bank of Cuyahoga River, Cleveland, Cuyahoga County, OH

222

Signs and Tracks of Animals  

NSDL National Science Digital Library

Students will examine clues about animals such as nests, leaves, feathers, fur, tracks that allow some conclusions about the identity, physical characteristics or behavior of the animals. Students will study the characteristics of animal tracks.

Susanne Grimm

223

Topic in Depth - Animal Tracks  

NSDL National Science Digital Library

For those of us living in Northern climates, when winter snow covers the landscape it provides great conditions to search for animal tracks. The following websites provide an abundance of information and resources about the ancient art of animal tracking.

224

Identifying and Preserving Wildlife Tracks  

NSDL National Science Digital Library

This site is an article by Jon C. Boren, Extension Wildlife Specialist and Byron D. Wright, Agricultural Specialist both from the University of New Mexico entitled Identifying and Preserving Wildlife Tracks. It contains information about identifying animal tracks, including those of deer, elk, antelope, and mountain lions. Also, there is a helpful guide to preserving animal tracks by making track casts, including the procedure and materials needed. A recommended reading list is also presented to give visitors a starting point for more information.

225

Bring It Home: Animal Tracks  

NSDL National Science Digital Library

In this activity, learners create handmade animal track stamps. Learners research animal tracks, draw the shapes on moleskin, and then stick the shapes onto blocks of wood to make stamps. Learners use the stamp prints to tell a story of an animal adventure, just how the Native Americans interpreted animal tracks in nature to better understand nature and life. This activity guide includes resources for learning more about animal tracks.

Chicago Children's Museum

2012-03-04

226

The central tracking detectors for D/O/  

SciTech Connect

Three types of drift chambers are being constructed for the Fermilab D/O/ experiment. The construction and readout of these chambers stress good spatial resolution, good two hit separation, and dE/dx. A 106 MHz FADC system with hardware zero suppression is being constructed to readout this system. 8 refs., 12 figs., 1 tab.

Clark, A.; Goozen, F.; Klopfenstein, C.; Kerth, L.T.; Loken, S.; Strovink, M.; Trippe, T.G.; Bantly, J.; Buchholz, D.; Claes, D.

1988-01-01

227

Garlic Central  

NSDL National Science Digital Library

Can garlic help repel mosquitoes? Find out the answer to this question and more at Garlic Central, an all-about-garlic website created by aficionado Trevor Mendham. The site contains an introductory section--titled Garlic 101--and sections that address culinary uses, medicinal benefits, and cultivation. The site's Cooking section includes a collection of recipes; and information about storing, freezing, and crushing garlic. The site also features a brief how-to guide for planting, growing, and harvesting garlic. Garlic Central even hosts a virtual shopping mall that connects site visitors to a wide range of garlic-related websites peddling foodstuffs, kitchen implements, posters, books, and garden supplies. This site is also reviewed in the September 17, 2004 _NSDL Life Sciences Report_.

228

IPO Central  

NSDL National Science Digital Library

IPO (Initial Public Offerings) Central, provided by The Reference Press, contains a wealth of information on IPOs. It features a complete list of companies that "filed for an initial public offering of common stock on or after May 6, 1996, the first day that all US companies were required to file electronically," along with EDGAR Online SEC filings. This directory can be accessed alphabetically or by date, and the latest filings are available under a separate menu item. IPO Central also highlights one featured IPO per week, with a free link to a Hoover Online profile on that company. "The Insider" offers short analytical columns on IPOs, and the "Beginner's Guide" has links to basic IPO information to help the novice. The site also offers links to other IPO-related sites. IPO Central does not at this time offer a searchable interface to its directory, but the providers promise improved search features soon. Note that listings are removed from the directory after six months and that EDGAR Online is in no way related to SEC (Securities and Exchange Commission) EDGAR.

229

Identifying and tracking turbulence structures  

Microsoft Academic Search

We present a statistical approach to object tracking, which allows for paths to merge together or split apart. Paths are also allowed to be born, die, and go undetected for several frames. The splitting and merging of paths is a novel addition for a statistically based tracking algorithm. This addition is essential for storm tracking, which is the motivation for

Curtis Storlie; Chris Davis; Timothy Hoar; Thomas Lee; Douglas Nychka; Jeffrey B. Weiss; Brandon Whitcher

2004-01-01

230

Career Tracks Presentation to HR  

E-print Network

Function/ Specialty A more specific area within a family Job Category Operational & Technical ProfessionalCareer Tracks Presentation to HR Contacts Compensation UC San Diego Campus Human Resources Compensation Unit #12;New Job Description System/Job Builder Career Tracks Overview Career Tracks Job Structure

Jun, Suckjoon

231

Advanced Telemetry Tracking Servo System  

Microsoft Academic Search

The primary objective of the Advanced Telemetry Tracking System Integration and Development program at WSMR was the development and evaluation of an advanced, almost totally digital servo tracking and control system. This was satisfied by replacing the aging analog servo tracking and control system in one of WSMR's seven Transportable Telemetry Acquisition Systems (TTAS) with a digital control unit (DCU),

Michael J. Hart

1991-01-01

232

Satellite (IRLS) tracking of elk  

NASA Technical Reports Server (NTRS)

The practicability of tracking free roaming animals in natural environments by satellite systems is reported. Satellite systems combine continuous tracking with simultaneous monitoring of physiological and environmental parameters through a combination of radio tracking and biotelemetric ground systems that lead to a better understanding of animal behavior and migration patterns.

Buechner, H. K.

1972-01-01

233

Sun tracking solar energy boiler  

Microsoft Academic Search

A sun tracking solar energy boiler is described comprising, in combination, a solar radiation collector and tracking assembly, a boiler assembly, and an electric power generating assembly, said collector and tracking assembly comprising a lens, a hollow crown plate located approximately at the focal point of the lens, said lens being movable by a diurnal drive means and a declination

1980-01-01

234

Combined 40Ar/39Ar and Fission-Track study of the Freetown Layered Igneous Complex, Freetown, Sierra Leone, West Africa: Implications for the Initial Break-up of Pangea to form the Central Atlantic Ocean and Insight into the Post-rift Evolution of the Sie  

NASA Astrophysics Data System (ADS)

Sierra Leone lies within the south-western part of the West African Craton and comprises two major Archaean structural divisions: a low-grade granite-greenstone terrane characterised by N-S striking structures and a NW-SE striking highly metamorphosed belt of strained rocks that form the coastal margin of the craton. Intruded into the belt is the Freetown Layered Igneous Complex (FLIC), a tholeiitic magamtic body emplaced prior to or during the break-up of Pangea to form the Central Atlantic Ocean and, forming today the high ground of the coastal outline of Sierra Leone which is one of the most distinctive features on the West African coast. The break-up of Pangaea to form the Central Atlantic and its passive margins began in the Early Jurassic. Geo-tectonically, the break-up was particularly characterised by the formation of the Central Atlantic Magmatic Province (CAMP), covering once-contiguous parts of North America, Europe, Africa and South America. The FLIC forming part of the heart of CAMP is the largest single layered igneous intrusive yet known on either side of the Central Atlantic, measuring on surface, 65 x 14 x 7 km. Geophysical investigations indicate that the intrusion extends offshore to a depth of about 20 km. Geologically the Complex is a rhythmically layered elongated ultramafic-mafic lopolith divisible into 4 major zones each comprising repeated sequences of troctolitic, gabbroic and anorthositic rocks. An idealised unit of layering is from base upwards: dunite, troctolite, olivine-gabbro, leuco-gabbro, gabbro-norite and anorthosite cumulates. 40Ar-39Ar age spectra and 40Ar/36Ar versus 39Ar/36Ar isochron plots obtained by stepwise-heating experiments on plagioclases, biotites and amphiboles from troctolites, olivine-gabbros, gabbro-norites and anorthosites of the four zones yield plateau and isochron ages that seem to depict the cooling history of the Complex after emplacement. The biotites and some of the plagioclases and amphiboles give very good plateaus that range from 196.3 ± 3 Ma to 232.1 ± 9 Ma with the best-fit isochron plots showing a range from 193.3± 10 Ma to 234.1 ± 11 Ma. Because these dates represent cooling ages, we interpret them as representing a minimum intrusion-age of the Complex implying that its true emplacement age might be somewhat older than 230 Ma. Given that most established CAMP ages revolve around 200 Ma or younger, we hypothesise that FLIC represents a hitherto unknown pre-CAMP magmatic event that might have thermally triggered the initial break-up of Pangaea to form the Central Atlantic. This view is consistent with field-observations that the Complex is cross-cut by predominantly coast-parallel mafic dykes attributed to the CAMP dyke-swarm. To ascertain the hypothesis, we are currently carrying out U-Pb zircon dating to establish, precisely, the true emplacement age of the Complex. The Fission-track ages vary from 91.7 ± 7 Ma to 114.6 ± 9 Ma. This age range shows that after emplacement and crystallisation, the FLIC underwent an extremely slow cooling for a long period of time. This in turn implies that after the break-up of Pangea to form, in part, the Sierra Leone margin, a late and slow uplift (Erosion/denudation) that took place during the Cretaceous was a very important geological process that characterised the post-rift evolution of the margin. References: Barrie, I.J., P.A.M. Andriessen, F.F. Beunk, J.R. Wijbrans, V.E.H. Strasser-King, D.V.A.Fode. (2006). Tectonothermal Evolution of the Sierra Leone Passive Continental Margin, West Africa: Constraints from Thermochronology. Geochemica et Cosmochemica Acta 70 (18): A36- A36 Suppl. S Aug-Sep 2006. Marzoli, A., P.R. Renne, E.M. Piccirillo, M. Ernesto, G. Bellieni, A De Min. (1999). Extensive 200-Million-Year-Old Continental Flood Basalts of the Central Atlantic Magmatic Province. Science284: 616-618. McHone, J.G. (2000). Non-plume magmatism and rifting during the opening of the central Atlantic Ocean. Tectonophysics, 316: 287-296. Umeji, A.C. (1983). Geochemistry and Mineralogy of the Freetown Layered Basic Igne

Barrie, Ibrahim; Wijbrans, Jan; Andriessen, Paul; Beunk, Frank; Strasser-King, Victor; Fode, Daniel

2010-05-01

235

49 CFR 213.331 - Track surface.  

Code of Federal Regulations, 2014 CFR

...the following table: Track surface (inches) Class of track...accommodate the minimum length of runoff, part of the runoff may be on tangent track. 3...a single deviation in track surface shall be within the limits...

2014-10-01

236

49 CFR 213.331 - Track surface.  

Code of Federal Regulations, 2013 CFR

...the following table: Track surface (inches) Class of track...accommodate the minimum length of runoff, part of the runoff may be on tangent track. 3...a single deviation in track surface shall be within the limits...

2013-10-01

237

SmarTrackBall SmarTrackBall SmarTrackBall  

E-print Network

;WISS 2013 4 4.1 21 mm 3 2 10 mm 1 Apple iPhone4S 4.2 RGB 2a 2b OpenCV1 2. a RGB b 5 SmarTrackBall 2 5.1 1 OpenCV: http://opencv.org/ 5.2 SmarTrackBall 6 SmarTrackBall SmarTrackBall 2 [1] D. Spelmezan, C

Tanaka, Jiro

238

Marine Animal Tracking  

NSDL National Science Digital Library

Students are introduced to the ideas and implications of animal tracking, which is useful within scientific and commercial industries. For instance, when planning coastal area development, it is important to take into consideration animal presence and movement. Students are engaged in an activity to monitor animal foraging behavior on a spatial scale by working in groups to track each others' movements as they travel a pre-determined course. They record their results individually and collaboratively in an attempt to understand animal movement regarding foraging behavior. Students also engage in a creative design activity, focusing on how they would design a tag for a marine animal of their choice. To conclude, students are questioned about data interpretation and how spatial information is important in relation to commercial, conservation and scientific research decisions.

Engineering K-Ph.D. Program,

239

On particle track detectors  

NASA Technical Reports Server (NTRS)

Aqueous sodium hydroxide is widely used to develop charged particle tracks in polycarbonate film, particularly Lexan. The chemical nature of the etching process for this system has been determined. A method employing ultra-violet absorbance was developed for monitoring the concentration of the etch products in solution. Using this method it was possible to study the formation of the etching solution saturated in etch products. It was found that the system super-saturates to a significant extent before precipitation occurs. It was also learned that the system approaches its equilibrium state rather slowly. It is felt that both these phenomena may be due to the presence of surfactant in the solution. In light of these findings, suggestions are given regarding the preparation and maintenance of the saturated etch solution. Two additional research projects, involving automated techniques for particle track analysis and particle identification using AgCl crystals, are briefly summarized.

Benton, E. V.; Gruhn, T. A.; Andrus, C. H.

1973-01-01

240

Allowance tracking workstation  

SciTech Connect

The Clean Air Act Amendments of 1990 and EPA`s Acid Rain Program unleashed an accountability monster on electric utilities. A software product was developed through establishment of a virtual corporation between ten (10) utilities and a software developer. The product has the ability to address different informational and transactional needs of the various departmental users within a utility, tracking and recording allowances, and producing various internal and external reports.

Martin, J.L. [Indianapolis Power and Light Co., IN (United States)

1995-12-31

241

04/17/2007 10:10 PMDHL: Track details Page 1 of 2http://track.dhl-usa.com/TrackRslts.asp?nav=TrackRslt  

E-print Network

04/17/2007 10:10 PMDHL: Track details Page 1 of 2http://track.dhl-usa.com/TrackRslts.asp're here to help! Contact DHL #12;04/17/2007 10:10 PMDHL: Track details Page 2 of 2http://track.dhl-usa.com/TrackRslts.asp

Bartholdi III, John J.

242

04/20/2006 07:10 AMDHL: Track details Page 1 of 2http://track.dhl-usa.com/TrackRslts.asp?nav=TrackBynumber  

E-print Network

04/20/2006 07:10 AMDHL: Track details Page 1 of 2http://track.dhl-usa.com/TrackRslts.asp and will be provided on invoice. #12;04/20/2006 07:10 AMDHL: Track details Page 2 of 2http://track.dhl-usa.com/TrackRslts.asp

Bartholdi III, John J.

243

04/19/2007 08:20 PMDHL: Track details Page 1 of 2http://track.dhl-usa.com/TrackRslts.asp?nav=TrackRslt  

E-print Network

04/19/2007 08:20 PMDHL: Track details Page 1 of 2http://track.dhl-usa.com/TrackRslts.asp're here to help! Contact DHL #12;04/19/2007 08:20 PMDHL: Track details Page 2 of 2http://track.dhl-usa.com/TrackRslts.asp

Bartholdi III, John J.

244

Fast Track Study  

NASA Technical Reports Server (NTRS)

The NASA Fast Track Study supports the efforts of a Special Study Group (SSG) made up of members of the Advanced Project Management Class number 23 (APM-23) that met at the Wallops Island Management Education Center from April 28 - May 8, 1996. Members of the Class expressed interest to Mr. Vem Weyers in having an input to the NASA Policy Document (NPD) 7120.4, that will replace NASA Management Institute (NMI) 7120.4, and the NASA Program/Project Management Guide. The APM-23 SSG was tasked with assisting in development of NASA policy on managing Fast Track Projects, defined as small projects under $150 million and completed within three years. 'Me approach of the APM-23 SSG was to gather data on successful projects working in a 'Better, Faster, Cheaper' environment, within and outside of NASA and develop the Fast Track Project section of the NASA Program/Project Management Guide. Fourteen interviews and four other data gathering efforts were conducted by the SSG, and 16 were conducted by Strategic Resources, Inc. (SRI), including five interviews at the Jet Propulsion Laboratory (JPL) and one at the Applied Physics Laboratory (APL). The interviews were compiled and analyzed for techniques and approaches commonly used to meet severe cost and schedule constraints.

1996-01-01

245

Thermal Tracking of Sports Players  

PubMed Central

We present here a real-time tracking algorithm for thermal video from a sports game. Robust detection of people includes routines for handling occlusions and noise before tracking each detected person with a Kalman filter. This online tracking algorithm is compared with a state-of-the-art offline multi-target tracking algorithm. Experiments are performed on a manually annotated 2-minutes video sequence of a real soccer game. The Kalman filter shows a very promising result on this rather challenging sequence with a tracking accuracy above 70% and is superior compared with the offline tracking approach. Furthermore, the combined detection and tracking algorithm runs in real time at 33 fps, even with large image sizes of 1920 × 480 pixels. PMID:25076219

Gade, Rikke; Moeslund, Thomas B.

2014-01-01

246

Thermal tracking of sports players.  

PubMed

We present here a real-time tracking algorithm for thermal video from a sports game. Robust detection of people includes routines for handling occlusions and noise before tracking each detected person with a Kalman filter. This online tracking algorithm is compared with a state-of-the-art offline multi-target tracking algorithm. Experiments are performed on a manually annotated 2-minutes video sequence of a real soccer game. The Kalman filter shows a very promising result on this rather challenging sequence with a tracking accuracy above 70% and is superior compared with the offline tracking approach. Furthermore, the combined detection and tracking algorithm runs in real time at 33 fps, even with large image sizes of 1920 × 480 pixels. PMID:25076219

Gade, Rikke; Moeslund, Thomas B

2014-01-01

247

Sonnet Central  

NSDL National Science Digital Library

Created by a dedicated sonnet aficionado, Sonnet Central is not intended for the scholar, per se, but for the reader, the Internaut with a weakness for poetry. The site contains a collection of English-language sonnets, grouped by period and region or by author, and modernized for contemporary readers. Pictures, contemporaneous critical works, a bibliography, and audio files of readings of selected poems complement the sonnets, some of which are maintained off-site (many at the University of Toronto). From Shakespeare to Wilfred Owen, selections from many well-known sonneteers are here alongside those of their less famous contemporaries.

248

Neuropsychology Central  

NSDL National Science Digital Library

Neuropsychology Central is devoted to the subject of - "Neuropsychology, a new branch of science with the specific and unique aim of investigating the role of individual brain systems in complex forms of mental activity." - A.R. Luria "The Working Brain" The page aims to describe the importance of neuropsychology as a science of brain and behavior, and to act as a resource for the professional and layperson alike. See links to current technology for brain imaging, and sections covering different aspects of this ever growing field such as cognitive, developmental, and geriatric Neuropsychology. In addition, a reader survey is included to facilitate the expansion of the site.

Browndyke, J. N.

249

Fuzzy Logic Particle Tracking  

NASA Technical Reports Server (NTRS)

A new all-electronic Particle Image Velocimetry technique that can efficiently map high speed gas flows has been developed in-house at the NASA Lewis Research Center. Particle Image Velocimetry is an optical technique for measuring the instantaneous two component velocity field across a planar region of a seeded flow field. A pulsed laser light sheet is used to illuminate the seed particles entrained in the flow field at two instances in time. One or more charged coupled device (CCD) cameras can be used to record the instantaneous positions of particles. Using the time between light sheet pulses and determining either the individual particle displacements or the average displacement of particles over a small subregion of the recorded image enables the calculation of the fluid velocity. Fuzzy logic minimizes the required operator intervention in identifying particles and computing velocity. Using two cameras that have the same view of the illumination plane yields two single exposure image frames. Two competing techniques that yield unambiguous velocity vector direction information have been widely used for reducing the single-exposure, multiple image frame data: (1) cross-correlation and (2) particle tracking. Correlation techniques yield averaged velocity estimates over subregions of the flow, whereas particle tracking techniques give individual particle velocity estimates. For the correlation technique, the correlation peak corresponding to the average displacement of particles across the subregion must be identified. Noise on the images and particle dropout result in misidentification of the true correlation peak. The subsequent velocity vector maps contain spurious vectors where the displacement peaks have been improperly identified. Typically these spurious vectors are replaced by a weighted average of the neighboring vectors, thereby decreasing the independence of the measurements. In this work, fuzzy logic techniques are used to determine the true correlation displacement peak even when it is not the maximum peak, hence maximizing the information recovery from the correlation operation, maintaining the number of independent measurements, and minimizing the number of spurious velocity vectors. Correlation peaks are correctly identified in both high and low seed density cases. The correlation velocity vector map can then be used as a guide for the particle-tracking operation. Again fuzzy logic techniques are used, this time to identify the correct particle image pairings between exposures to determine particle displacements, and thus the velocity. Combining these two techniques makes use of the higher spatial resolution available from the particle tracking. Particle tracking alone may not be possible in the high seed density images typically required for achieving good results from the correlation technique. This two-staged velocimetric technique can measure particle velocities with high spatial resolution over a broad range of seeding densities.

2005-01-01

250

Temporal Tracking of Coronaries in MSCTA by Means of 3D Geometrical Moments  

Microsoft Academic Search

An algorithm is proposed that perform a temporal tracking of the vessel central axis in a 3-D dynamic sequence in multi-slice computed tomography (MSCT). The approach is based on geometric moments and a local cylindrical approximation. The local characteristics of the vessel are estimated on the first volume of the sequence (position on the vessel central axis, local diameter, intravascular

S. Laguitton; C. Boldak; A. Bousse; G. Yang; C. Toumoulin

2006-01-01

251

Climatology and classification of Spring Saharan cyclone tracks  

NASA Astrophysics Data System (ADS)

Spring Saharan cyclones constitute a dominant feature of the not-well-explored Saharan region. In this manuscript, a climatological analysis and classification of Saharan cyclone tracks are presented using 6-hourly NCEP/NCAR sea level pressure (SLP) reanalyses over the Sahara (10°W-50°E, 20°N-50°N) for the Spring (March-April-May) season over the period 1958-2006. A simple tracking procedure based on following SLP minima is used to construct around 640 Spring Saharan cyclone tracks. Saharan cyclones are found to be short-lived compared to their extratropical counterparts with an e-folding time of about 3 days. The lee side of the west Atlas mountain is found to be the main cyclogenetic region for Spring Saharan cyclones. Central Iraq is identified as the main cyclolytic area. A subjective procedure is used next to classify the cyclone tracks where six clusters are identified. Among these clusters the Western Atlas-Asia Minor is the largest and most stretched, whereas Algerian Sahara-Asia Minor is composed of the most long-lived tracks. Upper level flow associated with the tracks has also been examined and the role of large scale baroclinicity in the growth of Saharan cyclones is discussed.

Hannachi, A.; Awad, A.; Ammar, K.

2011-08-01

252

Missile tracking and range safety: Tracking Interferometer Pathfinder System (TIPS)  

NASA Astrophysics Data System (ADS)

The tracking of missiles at close range proximity has been an ongoing challenge for many launch environments. The ability to provide accurate missile trajectory information is imperative for range safety and early termination of flight. In an effort to provide a potential solution to tracking issues that have plagued many traditional techniques, the Tracking Interferometer Pathfinder System (TIPS) was developed at the Naval Research Laboratory, Washington, D.C. The paper herein describes the design, field test, and results of an interferometer deployed for missile tracking.

Dowgiallo, David J.; Rauen, Stephen; Peters, Wendy M.; Polisensky, Emil J.

2013-05-01

253

Uranium occurrence in igneous rocks of the central Davis Mountains, west Texas  

E-print Network

fission- track distribution 49 Figure 10. Photomicrographs of two phases of zircon in a latite: (A) a uranium-poor, Type 1 zircon, and (B) its fission-track distribution; (C) a uranium- rich, Type 2 zircon, and (D) its tission-track distribution 54... the central Davis Mountains 13 Table 2. Average uranium abundances for different rock types in the central Davis Mountains 20 Table 3. Correlations between uranium abundance and major- and trace-element abundances in 22 rocks from the central Davis...

Schaftenaar, Wendy Elizabeth

1982-01-01

254

Central Pain Syndrome  

MedlinePLUS

NINDS Central Pain Syndrome Information Page Table of Contents (click to jump to sections) What is Central Pain Syndrome? Is there ... being done? Clinical Trials Organizations What is Central Pain Syndrome? Central pain syndrome is a neurological condition ...

255

Playing Fraction Tracks  

NSDL National Science Digital Library

This interactive game, similar to "Fraction Game" (catalogued separately) allows two students an opportunity to think about how fractions are related to a unit whole, compare fractional parts of a whole, and find equivalent fractions. Two players move markers a total distance (forwards and backwards directions) that equals the random target fraction box, along their choice of seven parallel number line tracks, which are divided into different fractional parts. The goal is to move each of the seven markers to the right side of the game board before your opponent does. Instructions and discussion questions are given.

2011-01-01

256

On the fast track.  

PubMed

Future nursing programs will be flexible, meeting the learning needs of diverse student populations. Feldman and Jordet describe an accelerated BSN track for nonnurse college graduates that meets that objective. In 3 years of experience with the program, the authors found these adult learners to form cohesive student cohorts and to produce strong graduates. In spite of the highly compressed 1-year program of studies, the project is deemed a success; a high dropout rate is more than compensated for by the high grade point average and the 100/N-CLEX examination pass by graduates. An extraordinary number of graduates intend to pursue graduate study. PMID:2601893

Feldman, H; Jordet, C

1989-11-01

257

Honeypots: Tracking Hackers  

NSDL National Science Digital Library

Honeypots are a relatively new technology in computer security. They are formally defined as "an information system resource whose value lies in unauthorized or illicit use of that resource." This is an intentionally broad definition, as honeypots can detect network intrusions, track online credit card fraud, and do almost everything in between. A good collection of research papers and technical articles dealing with honeypots can be found at this site. The papers come from some of the pioneers of the technology as well as authors who proposed more recent innovations like honeytokens.

258

Multiple collaborative kernel tracking.  

PubMed

Those motion parameters that cannot be recovered from image measurements are unobservable in the visual dynamic system. This paper studies this important issue of singularity in the context of kernel-based tracking and presents a novel approach that is based on a motion field representation which employs redundant but sparsely correlated local motion parameters instead of compact but uncorrelated global ones. This approach makes it easy to design fully observable kernel-based motion estimators. This paper shows that these high-dimensional motion fields can be estimated efficiently by the collaboration among a set of simpler local kernel-based motion estimators, which makes the new approach very practical. PMID:17496383

Fan, Zhimin; Yang, Ming; Wu, Ying

2007-07-01

259

Today's central receiver power plant  

NASA Astrophysics Data System (ADS)

For 15 years, the United States Department of Energy has worked with industry, both utilities and manufacturers, to develop the technology of solar central receiver power plants. In this type of plant, sunlight is concentrated by a field of sun-tracking mirrors, called heliostats, onto a centrally located receiver. The solar energy is collected in the form of a heated fluid, which is used to generate steam to power a conventional turbine generator. For a number of reasons, molten nitrate salt is now the preferred heat transfer fluid. Commercial plants will be sized between 100 and 200 MW. The impetus for developing central receivers comes from their unique advantages: (1) they produce clean, reliable, low-cost electricity; (2) they have practical energy storage that provides a high degree of dispatchability (annually up to 60 percent) - without fossil fuels; and (3) they are environmentally benign. Development efforts around the world have brought the technology to the brink of commercialization: The technical feasibility has been proven, and cost, performance, and reliability can be confidently predicted. Plans are currently being developed for the final steps toward commercial central receiver power plants.

Alpert, D. J.; Kolb, G. J.; Chavez, J. M.

1991-04-01

260

REC Tracking Systems Design Guide  

SciTech Connect

OAK-B135 The Design Guide is presented in three parts. Section II describes the need for REC tracking, the two principal tracking methods available, and, in simple terms, the operation of certificate-based systems. Section III presents the major issues in the design of certificate-based tracking systems and discusses the advantages and disadvantages of alternative solutions. Finally, Section IV offers design principles or recommendations for most of these issues.

Meredith Wingate

2004-02-03

261

Use of EEG to track visual attention in two dimensions  

NASA Astrophysics Data System (ADS)

This thesis investigates the use of EEG to track the spatial locus of covert, visual attention. Three experiments are described that were to detect the position of visual attention as it was deployed towards targets as they appeared. The first experiment uses flickering fields placed in the periphery of the visual field to induce SSVEPs, to be used to track the position of attention which varies horizontally between them. The flickers failed to produce significant SSVEP activity. However attention locus could still able to be tracked by endogenous lateralizations of 12Hz and 18Hz activity. A second experiment was then designed to track attention locus as it varied either horizontally or vertically using only endogenous EEG activity in the alpha (10Hz), low-beta (18Hz), high-beta (24Hz) and gamma (36Hz) bands. Tracking proved successful in all but a small number of subjects. Horizontally varying attention was associated with lateralizations of the alpha band and low-beta band, while vertically varying attention was associated with varying alpha band and low-beta band activity in the occipito-parietal junction over the central sulcus. A third experiment was then performed to track attention locus as it varied in two dimensions. Using a combination of the features found to be informative in the second experiment, tracking proved successful in up to nine bins of two-dimensional visual space. Tracking in either the horizontal or vertical dimension was also successful when attention varied in two dimensions. The success of this method shows that EEG can be used to passively detect the spatial position of attention, at varying degrees of position, as a person attends to objects they see.

Coleman, Robert Alan

262

Cassini Archive Tracking System  

NASA Technical Reports Server (NTRS)

The Cassini Archive Tracking System (CATS) is a computer program that enables tracking of scientific data transfers from originators to the Planetary Data System (PDS) archives. Without CATS, there is no systematic means of locating products in the archive process or ensuring their completeness. By keeping a database of transfer communications and status, CATS enables the Cassini Project and the PDS to efficiently and accurately report on archive status. More importantly, problem areas are easily identified through customized reports that can be generated on the fly from any Web-enabled computer. A Web-browser interface and clearly defined authorization scheme provide safe distributed access to the system, where users can perform functions such as create customized reports, record a transfer, and respond to a transfer. CATS ensures that Cassini provides complete science archives to the PDS on schedule and that those archives are available to the science community by the PDS. The three-tier architecture is loosely coupled and designed for simple adaptation to multimission use. Written in the Java programming language, it is portable and can be run on any Java-enabled Web server.

Conner, Diane; Sayfi, Elias; Tinio, Adrian

2006-01-01

263

Debate Central  

NSDL National Science Digital Library

Courtesy of the National Center for Policy Analysis (NCPA), Debate-Central.org offers resources related to this year's National Forensic League high school debate topic: "Resolved: That the United States federal government should establish a foreign policy significantly limiting the use of weapons of mass destruction." The site, which is updated daily, features a wealth of links sorted into ten categories (each of which is further divided into subcategories). Resources are collected from periodicals, think tanks, and other sources, and the collection should be useful not just for debaters but for anyone looking for authoritative resources on these topics. Other debate topics are listed on the right-hand side of the page, though these are covered in a less comprehensive manner. Also at the site is a bulletin board, through which users can ask questions of experts such as Dr. Hans Mark, former Secretary of the Air Force and Deputy Administrator of NASA, and a link to NCPA's Terrorism in America site. NCPA's mission is "to develop and promote private alternatives to government regulation and control, solving problems by relying on the strength of the competitive, entrepreneurial private sector."

264

49 CFR 213.63 - Track surface.  

Code of Federal Regulations, 2012 CFR

...Geometry § 213.63 Track surface. Each owner of the track...part applies shall maintain the surface of its track within the limits...the following table: Track surface Class of track 1(inches...inches) 5(inches) The runoff in any 31 feet of rail...

2012-10-01

265

49 CFR 213.63 - Track surface.  

Code of Federal Regulations, 2011 CFR

...Geometry § 213.63 Track surface. Each owner of the track...part applies shall maintain the surface of its track within the limits...the following table: Track surface Class of track 1(inches...inches) 5(inches) The runoff in any 31 feet of rail...

2011-10-01

266

49 CFR 213.63 - Track surface.  

Code of Federal Regulations, 2010 CFR

...Geometry § 213.63 Track surface. Each owner of the track...part applies shall maintain the surface of its track within the limits...the following table: Track surface Class of track 1(inches...inches) 5(inches) The runoff in any 31 feet of rail...

2010-10-01

267

A Novel Quadrilateral-based Tracking Method  

Microsoft Academic Search

This paper proposes a novel tracking method based on quadrilateral-based segmentation. The tracking method matches quadrilaterals in a region with those in a reference frame to construct region correspondences, from which trajectory of each region can be obtained. The Table Tennis sequence has been used to evaluate the tracking method. Experiment results show that the proposed tracking method can track

H. Y. Chung; Nelson Hon Ching Yung; Paul Y. S. Cheung

2002-01-01

268

Buckling analysis of continuous welded rail track  

Microsoft Academic Search

Continuous welded rail track, compared to jointed track not only reduces maintenance costs, but also increases life time of track components and the comfort of passengers. Since expansion of the rails is hardly possible in CWR-track, a temperature increase will result in high compressive stresses and track buckling may occur. Therefore the 'European Railway Research Institute' commissioned Delft University of

M. A. Van

1996-01-01

269

Solid State Nuclear Track Detectors--I: Track Characteristics and Formation Mechanisms.  

ERIC Educational Resources Information Center

Heavily ionizing charged particles produce radiation damage tracks in a wide variety of insulating materials. The experimental properties of these tracks and track recorders are described. The mechanisms by which the tracks are produced are discussed. (Author/KR)

Lal, Nand

1991-01-01

270

Faculty achievement tracking tool.  

PubMed

Faculty development and scholarship is an expectation of nurse educators. Accrediting institutions, such as the Commission on Collegiate Nursing Education, the National League for Nursing Accrediting Commission, and the Higher Learning Commission, all have criteria regarding faculty achievement. A faculty achievement tracking tool (FATT) was developed to facilitate documentation of accreditation criteria attainment. Based on criteria from accrediting organizations, the roles that are addressed include scholarship, service, and practice. Definitions and benchmarks for the faculty as an aggregate are included. Undergoing reviews from different accrediting organizations, the FATT has been used once for accreditation of the undergraduate program and once for accreditation of the graduate program. The FATT is easy to use and has become an excellent adjunct for the preparation for accreditation reports. In addition, the FATT may be used for yearly evaluations, advancement, and merit. PMID:19297967

Pettus, Sarah; Reifschneider, Ellen; Burruss, Nancy

2009-03-01

271

Airborne ballistic camera tracking systems  

NASA Technical Reports Server (NTRS)

An operational airborne ballistic camera tracking system was tested for operational and data reduction feasibility. The acquisition and data processing requirements of the system are discussed. Suggestions for future improvements are also noted. A description of the data reduction mathematics is outlined. Results from a successful reentry test mission are tabulated. The test mission indicated that airborne ballistic camera tracking systems are feasible.

Redish, W. L.

1976-01-01

272

Better models for people tracking  

Microsoft Academic Search

People tracking is a key component for robots operating in populated environments. Previ- ous works have employed dierent filtering and data association techniques for this purpose that typically rely on a set of generic assumptions on target be- havior and detector characteristics. In this paper, we focus on these assumptions rather than the tracking approach itself and show that with

Matthias Luber; Gian Diego Tipaldi; Kai O. Arras

2011-01-01

273

Classical & Bayesian Spectral and Tracking  

E-print Network

Classical & Bayesian Spectral and Tracking Analysis Keywords: Fundamental frequency estimation frequency estimation. The emphasis is on classical spectral estimation and Bayesian tracking analysis for their unconditional support in prayers. Finally, I would like to thank the greatest God who has given me the energy

274

Spark Chamber Track Measuring System  

Microsoft Academic Search

A system is described for the projection, digitizing, and recording of photographed spark chamber tracks. A Slo-Syn-driven projector automatically frames the film and projects the tracks on a screen mounted in a precision commercial plotting board. A reticle projector, mounted on the plotting board pen holder, is manually positioned by means of the plotting board drive tapes which also drive

James A. DeShong

1962-01-01

275

Fast Track Dredged Material Decontamination  

E-print Network

Fast Track Dredged Material Decontamination Demonstration for the Port of New York and New Jersey Department of Energy Brookhaven National Laboratory Fast Track Dredged Material Decontamination Demonstration .............................................................................. 3 3.3 Relation to the U.S. Army Corps of Engineers-New York District Dredged Material Management

Brookhaven National Laboratory

276

Deformable Contour Tracking & System Identification  

E-print Network

. Vaswani 3 Brain MRI slices: Tumor sequence (actual deformations) Perspective effect: Plane tracked by UAV,... ­ Animals such as a fish ­ Medical sequences: ROIs in brain or heart · Changing region of partial occlusions a UAV #12;Deformable Contour Tracking & System Id ­ N. Vaswani 14 Separate clutter (mul

Vaswani, Namrata

277

Learning to Track Multiple Targets.  

PubMed

Monocular multiple-object tracking is a fundamental yet under-addressed computer vision problem. In this paper, we propose a novel learning framework for tracking multiple objects by detection. First, instead of heuristically defining a tracking algorithm, we learn that a discriminative structure prediction model from labeled video data captures the interdependence of multiple influence factors. Given the joint targets state from the last time step and the observation at the current frame, the joint targets state at the current time step can then be inferred by maximizing the joint probability score. Second, our detection results benefit from tracking cues. The traditional detection algorithms need a nonmaximal suppression postprocessing to select a subset from the total detection responses as the final output and a large number of selection mistakes are induced, especially under a congested circumstance. Our method integrates both detection and tracking cues. This integration helps to decrease the postprocessing mistake risk and to improve performance in tracking. Finally, we formulate the entire model training into a convex optimization problem and estimate its parameters using the cutting plane optimization. Experiments show that our method performs effectively in a large variety of scenarios, including pedestrian tracking in crowd scenes and vehicle tracking in congested traffic. PMID:25051561

Liu, Xiao; Tao, Dacheng; Song, Mingli; Zhang, Luming; Bu, Jiajun; Chen, Chun

2014-07-14

278

Geoanalytic applications of particle tracks  

Microsoft Academic Search

Since the discovery that ionizing tracks left by highly energetic nuclei can be made visible through optical microscopes by proper etching, the field of particle track studies has blossomed at a rate equalled only by the growth of the porno-film industry. The analytic applications alone are probably unique in the wide range of results and fields of study that have

David E. Fisher

1975-01-01

279

Referent Tracking and its Applications  

Microsoft Academic Search

Referent tracking (RT) is a new paradigm, based on unique identification, for representing and keeping track of particulars. It was first introduced to support the entry and retrieval of data in electronic health records (EHRs). Its purpose is to avoid the ambiguity that arises when statements in an EHR refer to lesions, disorders, and other entities on the side of

Werner Ceusters; Barry Smith

2007-01-01

280

Making Sense of Dinosaur Tracks  

ERIC Educational Resources Information Center

What do paleontologists, dinosaur tracks, and the nature of science have in common? They're combined here in an inquiry activity where students use methods of observation and inference to devise evidence-based explanations for the data they collect about dinosaur tracks, much like the methods used by paleontologists. Students then debate the…

MacKenzie, Ann Haley; McDowell, Brian

2012-01-01

281

Tracking of mobile robot system  

Microsoft Academic Search

this paper is based on Intel established open source computer vision library (OpenCV) software system. This system can track a red object in the scene of the tracking system, and can be relatively effective to avoid the interference of light in the scene. Contour by calculating the position in the image center of gravity to control the robot's rotation, while

Cheng Jun; Wang Tao

2011-01-01

282

Choosing a track association method  

Microsoft Academic Search

This paper examines the problem of selecting a track association method. This is the first stage of the track fusion process and the performance of such a method is essential to the overall success of this process. It is shown that more issues must be considered than just examining the probability of correct association when judging the performance of an

Barbara F. La Scala; Alfonso Farina

2002-01-01

283

Space tracking in the Army  

NASA Astrophysics Data System (ADS)

The Tracking, Command, Control, and Communications (TRACC3) system, which is developed to evaluate the tracking approach to managing the flow of logistics on a global scale, is described. TRACC3 is an autonomous system that transmits its location periodically through INMARSAT. The TRACC3 system consists of three interrelated segments: the space and ground segments, and the monitor station.

Chin, Johnson

1992-03-01

284

CONTRACT ADMINISTRATIVE TRACKING SYSTEM (CATS)  

EPA Science Inventory

The Contract Administrative Tracking System (CATS) was developed in response to an ORD NHEERL, Mid-Continent Ecology Division (MED)-recognized need for an automated tracking and retrieval system for Cost Reimbursable Level of Effort (CR/LOE) Contracts. CATS is an Oracle-based app...

285

Front tracking for gas dynamics  

NASA Astrophysics Data System (ADS)

Front tracking represents an adaptive computational method for modeling fluid flow. Adaptive methods provide increased resolution by making use of special computational degrees of freedom which (a) are placed (in space and time) where they are most needed, and (b) fit the nature of the solution as closely as possible. 'Tracking' is distinguished by the choice of a lower dimensional adaptive grid, called the front or the interface, as its special computational degree of freedom. For flow problems in two space dimensions, tracking employs a moving one-dimensional grid, i.e., a system of curves, in addition to a two-dimensional grid. The use of tracking appears attractive for problems containing discontinuities and other singularities concentrated on surfaces. The work reported in this paper has the objective to implement a general purpose computational package based on front tracking ideas. Problems in compressible fluid dynamics are considered.

Chern, I.-L.; Glimm, J.; McBryan, O.; Plohr, B.; Yaniv, S.

1986-01-01

286

COCOA: tracking in aerial imagery  

NASA Astrophysics Data System (ADS)

Unmanned Aerial Vehicles (UAVs) are becoming a core intelligence asset for reconnaissance, surveillance and target tracking in urban and battlefield settings. In order to achieve the goal of automated tracking of objects in UAV videos we have developed a system called COCOA. It processes the video stream through number of stages. At first stage platform motion compensation is performed. Moving object detection is performed to detect the regions of interest from which object contours are extracted by performing a level set based segmentation. Finally blob based tracking is performed for each detected object. Global tracks are generated which are used for higher level processing. COCOA is customizable to different sensor resolutions and is capable of tracking targets as small as 100 pixels. It works seamlessly for both visible and thermal imaging modes. The system is implemented in Matlab and works in a batch mode.

Ali, Saad; Shah, Mubarak

2006-05-01

287

2. West portal of Tunnel 27, contextual view from track ...  

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

2. West portal of Tunnel 27, contextual view from track level east of Tunnel 26 (HAER CA-202), 210mm lens. Note solar panel providing signal power, evidence of continuing updating of technology by the railroad. Single-light searchlight-type signal was typical system-wide on the Southern Pacific prior to the 1980s merger with the Denver & Rio Grande Western. - Central Pacific Transcontinental Railroad, Tunnel No. 27, Milepost 133.9, Applegate, Placer County, CA

288

Scholarly tracks in emergency medicine.  

PubMed

Over the past decade, some residency programs in emergency medicine (EM) have implemented scholarly tracks into their curricula. The goal of the scholarly track is to identify a niche in which each trainee focuses his or her scholarly work during residency. The object of this paper is to discuss the current use, structure, and success of resident scholarly tracks. A working group of residency program leaders who had implemented scholarly tracks into their residency programs collated their approaches, implementation, and early outcomes through a survey disseminated through the Council of Emergency Medicine Residency Directors (CORD) list-serve. At the 2009 CORD Academic Assembly, a session was held and attended by approximately 80 CORD members where the results were disseminated and discussed. The group examined the literature, discussed the successes and challenges faced during implementation and maintenance of the tracks, and developed a list of recommendations for successful incorporation of the scholarly track structure into a residency program. Our information comes from the experience at eight training programs (five 3-year and three 4-year programs), ranging from 8 to 14 residents per year. Two programs have been working with academic tracks for 8 years. Recommendations included creating clear goals and objectives for each track, matching track topics with faculty expertise, protecting time for both faculty and residents, and providing adequate mentorship for the residents. In summary, scholarly tracks encourage the trainee to develop an academic or clinical niche within EM during residency training. The benefits include increased overall resident satisfaction, increased success at obtaining faculty and fellowship positions after residency, and increased production of scholarly work. We believe that this model will also encourage increased numbers of trainees to choose careers in academic medicine. PMID:21199090

Regan, Linda; Stahmer, Sarah; Nyce, Andrew; Nelson, Bret P; Moscati, Ronald; Gisondi, Michael A; Hopson, Laura R

2010-10-01

289

49 CFR 213.55 - Track alinement.  

Code of Federal Regulations, 2014 CFR

...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION TRACK SAFETY STANDARDS Track Geometry § 213.55 Track alinement. (a) Except as provided in paragraph (b) of this section, alinement may not...

2014-10-01

290

49 CFR 213.359 - Track stiffness.  

Code of Federal Regulations, 2013 CFR

...compliance with the vehicle/track interaction safety limits and geometry requirements of this subpart. (b) Track shall have...compliance with the vehicle/track interaction safety limits and geometry requirements of this...

2013-10-01

291

49 CFR 213.359 - Track stiffness.  

Code of Federal Regulations, 2012 CFR

...compliance with the vehicle/track interaction safety limits and geometry requirements of this subpart. (b) Track shall have...compliance with the vehicle/track interaction safety limits and geometry requirements of this...

2012-10-01

292

49 CFR 213.359 - Track stiffness.  

Code of Federal Regulations, 2014 CFR

...compliance with the vehicle/track interaction safety limits and geometry requirements of this subpart. (b) Track shall have...compliance with the vehicle/track interaction safety limits and geometry requirements of this...

2014-10-01

293

49 CFR 213.359 - Track stiffness.  

Code of Federal Regulations, 2011 CFR

...compliance with the vehicle/track interaction safety limits and geometry requirements of this subpart. (b) Track shall have...compliance with the vehicle/track interaction safety limits and geometry requirements of this...

2011-10-01

294

49 CFR 213.55 - Track alinement.  

Code of Federal Regulations, 2013 CFR

...Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION TRACK SAFETY STANDARDS Track Geometry § 213.55 Track alinement. (a) Except as provided in paragraph (b) of this section, alinement may not...

2013-10-01

295

Aging in large CDF tracking chambers  

SciTech Connect

The experience of the Collider Detector at Fermilab (CDF) with aging in the large axial drift chamber responsible for tracking in the central region is presented. Premature aging in the Run 1 chamber was observed after only 0.02 C/cm. After cleaning much of the gas system and making modifications to reduce aerosols from the alcohol bubbler, the observed aging rate fell dramatically in test chambers. Considerable effort has been made to better understand the factors that affect aging since the replacement chamber for Run 2 will accumulate about 1.0 C/cm. Current test chambers using the full CDF gas system show aging rates of less than 5%/C/cm.

M. Binkley et al.

2001-03-19

296

Second-generation photovoltaic two-axis tracking structure development program  

SciTech Connect

Design of a two axis turntable tracking structure supporting 336 photovoltaic concentrator modules producing 35 kW has been completed. The tracking structure rotates about a central pinthe supported by 20 post-mounted wheels to follow the sun in azimuth. A simple actuator tilts modules supported on 7 rows of torque tubes to follow the sun in elevation. Design optimization trade studies are summarized and truss structure and foundations. Complete design drawings are also included.

Not Available

1982-02-01

297

3D coronary structure tracking algorithm with regularization and multiple hypotheses in MRI  

Microsoft Academic Search

This paper presents an improved version of a tracking algorithm for the extraction of the 3D central axis of tubular-like object in a low-contrast and multi-object environment. This improvement concerns two aspects: (1) an efficient Infinite Impulse Response (IIR) filtering of the successive tracking directions is used to introduce regularization and (2) a multiple hypotheses testing procedure allows an almost

Jérôme Velut; Christine Toumoulin; Jean-Louis Coatrieux

2010-01-01

298

Satellite-Retrieved Microstructure of AgI Seeding Tracks in Supercooled Layer Clouds  

Microsoft Academic Search

NOAA Advanced Very High Resolution Radiometer (AVHRR) images revealed conspicuous tracks of glaciated cloud in thick supercooled layer clouds over central China. These tracks were identified as being artificially produced by cloud-seeding operations at the -10°C isotherm, less than 1 km below cloud tops, aimed at precipitation enhancement, by means of AgI acetone generators. The cloud composition was deduced by

Daniel Rosenfeld; Xing Yu; Jin Dai

2005-01-01

299

Feature tracking and aging  

PubMed Central

There are conflicting results regarding the effect of aging on second-order motion processing (i.e., motion defined by attributes other than luminance, such as contrast). Two studies (Habak and Faubert, 2000; Tang and Zhou, 2009) found that second-order motion processing was more vulnerable to aging than first-order motion processing. Conversely, Billino et al. (2011) recently found that aging affected first- and second-order motion processing by similar proportions. These three studies used contrast-defined motion as a second-order stimulus, but there can be at least two potential issues when using such a stimulus to evaluate age-related sensitivity losses. First, it has been shown that the motion system processing contrast-defined motion varies depending on the stimulus parameters. Thus, although all these three studies assumed that their contrast-defined motion was processed by a low-level second-order motion system, this was not necessarily the case. The second potential issue is that contrast-defined motion consists in a contrast modulation of a texture rich in high spatial frequencies and aging mainly affects contrast sensitivity at high spatial frequencies. Consequently, some age-related sensitivity loss to second-order motion could be due to a lower sensitivity to the texture rather than to motion processing per se. To avoid these two potential issues, we used a second-order motion stimulus void of high spatial frequencies and which has been shown to be processed by a high-level feature tracking motion system, namely fractal rotation (Lagacé-Nadon et al., 2009). We found an age-related deficit on second-order motion processing at all temporal frequencies including the ones for which no age-related effect on first-order motion processing was observed. We conclude that aging affects the ability to track features. Previous age-related results on second-order and global motion processing are discussed in light of these findings. PMID:23874318

Allard, Rémy; Lagacé-Nadon, Sarah; Faubert, Jocelyn

2013-01-01

300

Feature tracking and aging.  

PubMed

There are conflicting results regarding the effect of aging on second-order motion processing (i.e., motion defined by attributes other than luminance, such as contrast). Two studies (Habak and Faubert, 2000; Tang and Zhou, 2009) found that second-order motion processing was more vulnerable to aging than first-order motion processing. Conversely, Billino et al. (2011) recently found that aging affected first- and second-order motion processing by similar proportions. These three studies used contrast-defined motion as a second-order stimulus, but there can be at least two potential issues when using such a stimulus to evaluate age-related sensitivity losses. First, it has been shown that the motion system processing contrast-defined motion varies depending on the stimulus parameters. Thus, although all these three studies assumed that their contrast-defined motion was processed by a low-level second-order motion system, this was not necessarily the case. The second potential issue is that contrast-defined motion consists in a contrast modulation of a texture rich in high spatial frequencies and aging mainly affects contrast sensitivity at high spatial frequencies. Consequently, some age-related sensitivity loss to second-order motion could be due to a lower sensitivity to the texture rather than to motion processing per se. To avoid these two potential issues, we used a second-order motion stimulus void of high spatial frequencies and which has been shown to be processed by a high-level feature tracking motion system, namely fractal rotation (Lagacé-Nadon et al., 2009). We found an age-related deficit on second-order motion processing at all temporal frequencies including the ones for which no age-related effect on first-order motion processing was observed. We conclude that aging affects the ability to track features. Previous age-related results on second-order and global motion processing are discussed in light of these findings. PMID:23874318

Allard, Rémy; Lagacé-Nadon, Sarah; Faubert, Jocelyn

2013-01-01

301

Central sleep apnea  

MedlinePLUS

... central sleep apnea. A condition called Cheyne-Stokes respiration can mimic central sleep apnea. This involves breathing ... bilevel positive airway pressure (BiPAP) or adaptive servo-ventilation (ASV). Some types of central sleep apnea are ...

302

Central serous choroidopathy  

MedlinePLUS

Central serous retinopathy ... of stress may be more likely to develop central serous retinopathy. The condition can also occur as ... Your health care provider can usually diagnose central serous ... confirms the diagnosis. It may be done with a noninvasive ...

303

Central Serous Retinopathy Treatment  

MedlinePLUS

... Sun Eye Health News Consumer Alerts What Is Central Serous Retinopathy? Tweet The retina is the light- ... retina is key to clear vision. What is Central Serous Retinopathy? Central Serous Retinopathy Symptoms Who is ...

304

Neural network tracking and extension of positive tracking periods  

NASA Technical Reports Server (NTRS)

Feature detectors have been considered for the role of supplying additional information to a neural network tracker. The feature detector focuses on areas of the image with significant information. Basically, if a picture says a thousand words, the feature detectors are looking for the key phrases (keypoints). These keypoints are rotationally invariant and may be matched across frames. Application of these advanced feature detectors to the neural network tracking system at JPL has promising potential. As part of an ongoing program, an advanced feature detector was tested for augmentation of a neural network based tracker. The advance feature detector extended tracking periods in test sequences including aircraft tracking, rover tracking, and simulated Martian landing. Future directions of research are also discussed.

Hanan, Jay C.; Chao, Tien-Hsin; Moreels, Pierre

2004-01-01

305

Cooperative Modeling and Design History Tracking Using Design Tracking Matrix  

E-print Network

This thesis suggests a new framework for cooperative modeling which supports concurrency design protocol with a design history tracking function. The proposed framework allows designers to work together while eliminating design conflicts...

Kim, Jonghyun

2010-10-12

306

A composite tracking sensor with high accuracy and large dynamic range  

NASA Astrophysics Data System (ADS)

A composite tracking sensor, in which a reflect mirror with a central hole is inserted in the imaging systems so that the reflective beam beyond the hole is directed to the large dynamic range detector and the beam passing the hole is reimaged by a lens to enter the high sensitivity detector, can be used for tip-tilt detecting with high accuracy and large dynamic range simultaneously. A composite tracking sensor prototype based on the multi-anode photo-multiplier tubes (MAPMT) is developed for 1.8 meter astronomical telescope in the Gaomeigu astronomical observation station. In this paper, the principle of the composite tracking sensor is introduced. The prototype is described in detailed and the experimental results are presented. The results show that this composite tracking sensor can reach the tracking accuracy of 0.2 ?rad and higher within the dynamic range of 870 ?rad.

Ma, Xiaoyu; Wei, Kai; Zheng, Wenjia; Rao, Changhui

2014-07-01

307

Storm Tracks Across Eastern Canada  

NASA Astrophysics Data System (ADS)

The global storm tracks patterns across the Northern Hemisphere are well documented, but their regional impact on populations has yet to be characterized, as very few studies took a local perspective on storm tracks. In this study, a Lagrangian tracking algorithm is applied to the 850 hPa relative vorticity field to characterize extratropical storm tracks that pass through major cities in Canada. Storm tracks are first classified in reference to the metropolitan cities that they impact, such as Toronto, Montreal, Halifax and St-John's. They are then subjected to several analyses, including but not limited to the identification of main development regions, typical tracks, mean growth rate, intensity and typical regions of decay. We found that the preferential development regions are the lee of the Rockies, the Great Lakes and the Western Atlantic. The collection of storm tracks across each city is composed of storms developing not from a single development region, but from several. Results show that the storm track variability at a city is dominated by the storm track variability of its predominant development region. Among others, we found that the ensembles of storms crossing East coast cities (Halifax, St-John's) are dominated by Atlantic storms that are most frequent during the winter. Storms passing through Montreal and Toronto travel primarily from the Great Lakes and the mid-latitude Rockies. In eastern Canada, storms from the southernmost part of the Rockies are much less frequent, but this development region is the main source of extreme storms, and is thus important in terms of impacts on metropolitan areas. The relationship between storm tracks and modes of atmospheric variability are also examined with an emphasis on the El Nino Southern Oscillation (ENSO) and Northern Annular Mode (NAM). We found that teleconnection shifts storm tracks differently in different development regions. The anomalous storm track densities are presented, as well as their direct impact on specific metropolitan areas. Results show that the combination of these shifts impact cities differently according to their geographic location.

Plante, Mathieu; Son, Seok-Woo; Gyakum, John; Kevin, Grise

2013-04-01

308

Abrasion resistant track shoe grouser  

DOEpatents

A track shoe for a track-type vehicle. The track shoe includes a base plate and a grouser projecting away from the base plate. A capping surface structure of substantially horseshoe shaped cross-section is disposed across a distal portion of the grouser. The capping surface structure covers portions of a distal edge surface and adjacent lateral surfaces. The capping surface structure is formed from an material characterized by enhanced wear resistance relative to portions of the grouser underlying the capping surface structure.

Fischer, Keith D; Diekevers, Mark S; Afdahl, Curt D; Steiner, Kevin L; Barnes, Christopher A

2013-04-23

309

Sun Tracking Systems: A Review  

PubMed Central

The output power produced by high-concentration solar thermal and photovoltaic systems is directly related to the amount of solar energy acquired by the system, and it is therefore necessary to track the sun's position with a high degree of accuracy. Many systems have been proposed to facilitate this task over the past 20 years. Accordingly, this paper commences by providing a high level overview of the sun tracking system field and then describes some of the more significant proposals for closed-loop and open-loop types of sun tracking systems. PMID:22412341

Lee, Chia-Yen; Chou, Po-Cheng; Chiang, Che-Ming; Lin, Chiu-Feng

2009-01-01

310

Toward Robust Online Visual Tracking  

NASA Astrophysics Data System (ADS)

We pursue a research direction that will empower machines with simultaneous tracking and recognition capabilities similar to human cognition. Toward that, we develop algorithms that leverage prior knowledge/model obtained offline with information available online via novel learning algorithms. While humans can effortlessly locate moving objects in different environments, visual tracking remains one of the most important and challenging problems in computer vision. Robust cognitive visual tracking algorithms facilitate answering important questions regarding how objects move and interact in complex environments. They have broad applications including surveillance, navigation, human computer interfaces, object recognition, motion analysis and video indexing, to name a few.

Yang, Ming-Hsuan; Ho, Jeffrey

311

High resolution track etch autoradiography  

DOEpatents

A detector assembly is disclosed for use in obtaining alpha-track autoradiographs, the detector assembly including a substantially boron-free substrate; a detector layer deposited on the substantially boron-free substrate, the detector layer being capable of recording alpha particle tracks and exhibiting evidence of the alpha tracks in response to being exposed to an etchant, the detector layer being less than about 2 microns thick; and a protective layer deposited on the detector layer, the protective layer being resistant to the etchant and having a thickness of about 0.5 to 1 microns. 13 figures.

Solares, G.; Zamenhof, R.G.

1994-12-27

312

High resolution track etch autoradiography  

DOEpatents

A detector assembly for use in obtaining alpha-track autoradiographs, the detector assembly including a substantially boron-free substrate; a detector layer deposited on the substantially boron-free substrate, the detector layer being capable of recording alpha particle tracks and exhibiting evidence of the alpha tracks in response to being exposed to an etchant, the detector layer being less than about 2 microns thick; and a protective layer deposited on the detector layer, the protective layer being resistant to the etchant and having a thickness of about 0.5 to 1 microns.

Solares, Guido (Arlington, MA); Zamenhof, Robert G. (Brookline, MA)

1994-01-01

313

The Automatic Library Tracking Database  

SciTech Connect

A library tracking database has been developed and put into production at the National Institute for Computational Sciences and the Oak Ridge Leadership Computing Facility (both located at Oak Ridge National Laboratory.) The purpose of the library tracking database is to track which libraries are used at link time on Cray XT5 Supercomputers. The database stores the libraries used at link time and also records the executables run in a batch job. With this data, many operationally important questions can be answered such as which libraries are most frequently used and which users are using deprecated libraries or applications. The infrastructure design and reporting mechanisms are presented along with collected production data.

Fahey, Mark R [ORNL; Jones, Nicholas A [ORNL; Hadri, Bilel [ORNL

2010-01-01

314

Fluorescent image tracking velocimeter  

DOEpatents

A multiple-exposure fluorescent image tracking velocimeter (FITV) detects and measures the motion (trajectory, direction and velocity) of small particles close to light scattering surfaces. The small particles may follow the motion of a carrier medium such as a liquid, gas or multi-phase mixture, allowing the motion of the carrier medium to be observed, measured and recorded. The main components of the FITV include: (1) fluorescent particles; (2) a pulsed fluorescent excitation laser source; (3) an imaging camera; and (4) an image analyzer. FITV uses fluorescing particles excited by visible laser light to enhance particle image detectability near light scattering surfaces. The excitation laser light is filtered out before reaching the imaging camera allowing the fluoresced wavelengths emitted by the particles to be detected and recorded by the camera. FITV employs multiple exposures of a single camera image by pulsing the excitation laser light for producing a series of images of each particle along its trajectory. The time-lapsed image may be used to determine trajectory and velocity and the exposures may be coded to derive directional information.

Shaffer, Franklin D. (Library, PA)

1994-01-01

315

Analysis of the Influence of Cracked Sleepers under Static Loading on Ballasted Railway Tracks  

PubMed Central

The principal causes of cracking in prestressed concrete sleepers are the dynamic loads induced by track irregularities and imperfections in the wheel-rail contact and the in-phase and out-of-phase track resonances. The most affected points are the mid-span and rail-seat sections of the sleepers. Central and rail-seat crack detection require visual inspections, as legislation establishes, and involve sleepers' renewal even though European Normative considers that thicknesses up to 0.5?mm do not imply an inadequate behaviour of the sleepers. For a better understanding of the phenomenon, the finite element method constitutes a useful tool to assess the effects of cracking from the point of view of structural behaviour in railway track structures. This paper intends to study how the cracks at central or rail-seat section in prestressed concrete sleepers influence the track behaviour under static loading. The track model considers three different sleeper models: uncracked, cracked at central section, and cracked at rail-seat section. These models were calibrated and validated using the frequencies of vibration of the first three bending modes obtained from an experimental modal analysis. The results show the insignificant influence of the central cracks and the notable effects of the rail-seat cracks regarding deflections and stresses. PMID:25530998

Montalbán Domingo, Laura; Zamorano Martín, Clara; Palenzuela Avilés, Cristina; Real Herráiz, Julia I.

2014-01-01

316

Master track Theoretical Biology & Bioinformatics  

E-print Network

Master track Theoretical Biology & Bioinformatics Modeling and bioinformatics is an important Biology & Bioinformatics provides courses introducing you to the basic concepts of modeling and bioinformatics, and offers research projects in which you will study how complex biological systems function

Utrecht, Universiteit

317

Model-assisted object tracking  

NASA Astrophysics Data System (ADS)

Many current video analysis systems fail to fully acknowledge the process that resulted in the acquisition of the video data, i.e. they don't view the complete multimedia system that encompasses the several physical processes that lead to the captured video data. This multimedia system includes the physical process that created the appearance of the captured objects, the capturing of the data by the sensor (camera), and a model of the domain the video data belongs to. By modelling this complete multimedia system, a much more robust and theoretically sound approach to video analysis can be taken. In this paper we will describe such a system for the detection, recognition and tracking of objects in video's. We will introduce an extension of the mean shift tracking process, based on a detailed model of the video capturing process. This system is used for two applications in the soccer video domain: Billboard recognition and tracking and player tracking.

Aldershoff, Frank; Gevers, Theo; Prins, Philip

2005-01-01

318

Model-assisted object tracking  

NASA Astrophysics Data System (ADS)

Many current video analysis systems fail to fully acknowledge the process that resulted in the acquisition of the video data, i.e. they don't view the complete multimedia system that encompasses the several physical processes that lead to the captured video data. This multimedia system includes the physical process that created the appearance of the captured objects, the capturing of the data by the sensor (camera), and a model of the domain the video data belongs to. By modelling this complete multimedia system, a much more robust and theoretically sound approach to video analysis can be taken. In this paper we will describe such a system for the detection, recognition and tracking of objects in video's. We will introduce an extension of the mean shift tracking process, based on a detailed model of the video capturing process. This system is used for two applications in the soccer video domain: Billboard recognition and tracking and player tracking.

Aldershoff, Frank; Gevers, Theo; Prins, Philip

2004-12-01

319

Computer Tracking of Eye Motions  

E-print Network

This memo is to explain why the Artificial Intelligence group of Project MAC is developing methods for on-line tracking of human eye movements. It also gives a brief resume of results to date and the next steps.

Minsky, Marvin

1967-03-01

320

Tracking Code for Microwave Instability  

SciTech Connect

To study microwave instability the tracking code is developed. For bench marking, results are compared with Oide-Yokoya results [1] for broad-band Q = 1 impedance. Results hint to two possible mechanisms determining the threshold of instability.

Heifets, S.; /SLAC

2006-09-21

321

Solar Angles and Tracking Systems  

NSDL National Science Digital Library

Students learn about the daily and annual cycles of solar angles used in power calculations to maximize photovoltaic power generation. They gain an overview of solar tracking systems that improve PV panel efficiency by following the sun through the sky.

2014-09-18

322

The Physics of Fast Track  

ERIC Educational Resources Information Center

Toys can provide motivational contexts for learning and teaching about physics. A cheap car track provides an almost frictionless environment from which a quantitative study of conservation of energy and circular motion can be made.

Kibble, Bob

2007-01-01

323

Silicon Tracking Upgrade at CDF  

SciTech Connect

The Collider Detector at Fermilab (CDF) is scheduled to begin recording data from Run II of the Fermilab Tevatron in early 2000. The silicon tracking upgrade constitutes both the upgrade to the CDF silicon vertex detector (SVX II) and the new Intermediate Silicon Layers (ISL) located at radii just beyond the SVX II. Here we review the design and prototyping of all aspects of these detectors including mechanical design, data acquisition, and a trigger based on silicon tracking.

Kruse, M.C. [Rochester Univ., NY (United States); CDF Collaboration

1998-04-01

324

Color-Based Probabilistic Tracking  

Microsoft Academic Search

Color-based trackers recently proposed in (3,4,5) have been proved robust and versatile for a modest computational cost. They are especially appealing for tracking tasks where the spatial structure of the tracked objects exhibits such a dramatic variability that trackers based on a space-dependent appearance reference would break down very fast. Trackers in (3,4,5) rely on the deterministic search of a

Patrick Pérez; Carine Hue; Jaco Vermaak; Michel Gangnet

2002-01-01

325

OATS: Oxford Aerial Tracking System  

Microsoft Academic Search

Small robot helicopters are becoming a popu- lar research platform due to the availability of o-the-shelf components and their suitability for useful applications. We describe the Oxford Aer- ial Tracking System (OATS) that we are commis- sioning which takes a commercial airframe and low-level flight controller, and adapts these for use in applications requiring the visual tracking of ground targets.

Heiko Helble; Stephen Cameron

2007-01-01

326

Kalman Orbit Optimized Loop Tracking  

NASA Technical Reports Server (NTRS)

Under certain conditions of low signal power and/or high noise, there is insufficient signal to noise ratio (SNR) to close tracking loops with individual signals on orbiting Global Navigation Satellite System (GNSS) receivers. In addition, the processing power available from flight computers is not great enough to implement a conventional ultra-tight coupling tracking loop. This work provides a method to track GNSS signals at very low SNR without the penalty of requiring very high processor throughput to calculate the loop parameters. The Kalman Orbit-Optimized Loop (KOOL) tracking approach constitutes a filter with a dynamic model and using the aggregate of information from all tracked GNSS signals to close the tracking loop for each signal. For applications where there is not a good dynamic model, such as very low orbits where atmospheric drag models may not be adequate to achieve the required accuracy, aiding from an IMU (inertial measurement unit) or other sensor will be added. The KOOL approach is based on research JPL has done to allow signal recovery from weak and scintillating signals observed during the use of GPS signals for limb sounding of the Earth s atmosphere. That approach uses the onboard PVT (position, velocity, time) solution to generate predictions for the range, range rate, and acceleration of the low-SNR signal. The low- SNR signal data are captured by a directed open loop. KOOL builds on the previous open loop tracking by including feedback and observable generation from the weak-signal channels so that the MSR receiver will continue to track and provide PVT, range, and Doppler data, even when all channels have low SNR.

Young, Lawrence E.; Meehan, Thomas K.

2011-01-01

327

Tracking subsystem test requirements survey  

NASA Technical Reports Server (NTRS)

A survey of the test and checkout requirements of the tracking portion of the communications and tracking subsystem was performed to evaluate adequacy of planned tests and test requirement documents. Emphasis is placed on identifying test completeness, duplications, and omissions. Items that may save time, aid in testing, and present a more complete integrated test program are also noted. The results of this survey are summarized.

Orr, D. H.; Tatosian, C. G.; Bynum, M. C.; Zook, A. W.

1975-01-01

328

Temporal tracking of coronaries in MSCTA by means of 3D geometrical moments.  

PubMed

An algorithm is proposed that perform a temporal tracking of the vessel central axis in a 3-D dynamic sequence in multi-slice computed tomography (MSCT). The approach is based on geometric moments and a local cylindrical approximation. The local characteristics of the vessel are estimated on the first volume of the sequence (position on the vessel central axis, local diameter, intravascular and background intensities), then used to track the vessel along the sequence. The correspondence between two volumes is solved through a region matching based on a criterion of minimal distance combining moment-based descriptors with intensity information. Preliminary results are presented on two sequences. PMID:17946009

Laguitton, S; Boldak, C; Bousse, A; Yang, G; Toumoulin, C

2006-01-01

329

SLR tracking of GPS-35  

NASA Technical Reports Server (NTRS)

An experiment was designed to launch a corner cube retroreflector array on one of the Global Positioning Satellites (GPS). The launch on Aug. 31, 1993 ushered in the era of SLR tracking of GPS spacecraft. Once the space operations group finished the check-out procedures for the new satellite, the agreed upon SLR sites were allowed to track it. The first site to acquire GPS-35 was the Russian system at Maidanak and closely after the MLRS system at McDonald Observatory, Texas. The laser tracking network is currently tracking the GPS spacecraft known as GPS-35 or PRN 5 with great success. From the NASA side there are five stations that contribute data regularly and nearly as many from the international partners. Upcoming modifications to the ground receivers will allow for a further increase in the tracking capabilities of several additional sites and add some desperately needed southern hemisphere tracking. We are analyzing the data and are comparing SLR-derived orbits to those determined on the basis of GPS radiometric data.

Pavlis, Erricos C.

1994-01-01

330

07/19/2007 09:43 AMDHL: Track details Page 1 of 2http://track.dhl-usa.com/TrackByNbr.asp?nav=Tracknbr  

E-print Network

07/19/2007 09:43 AMDHL: Track details Page 1 of 2http://track.dhl-usa.com/TrackByNbr.asp Track Services About DHL Help #12;07/19/2007 09:43 AMDHL: Track details Page 2 of 2http://track.dhl-usa.com/TrackByNbr.asp

Bartholdi III, John J.

331

49 CFR 213.63 - Track surface.  

Code of Federal Regulations, 2014 CFR

...Geometry § 213.63 Track surface. (a) Except as...owner shall maintain the surface of its track within the...following table: Track surface (inches) Class of track 1 2 3 4 5 The runoff in any 31 feet of...

2014-10-01

332

49 CFR 213.63 - Track surface.  

Code of Federal Regulations, 2013 CFR

...Geometry § 213.63 Track surface. (a) Except as...owner shall maintain the surface of its track within the...following table: Track surface (inches) Class of track 1 2 3 4 5 The runoff in any 31 feet of...

2013-10-01

333

NEW BIFACIAL SOLAR TRACKERS AND TRACKING CONCENTRATORS  

Microsoft Academic Search

A very simple solar tracker and tracking concentrator are described in the paper as well as the tracking strategy which enables high collectible energy surplus at medium tracking accuracy. A new low cost tracking soft ridge concentrator together with the solar tracker and bifacial PV panels can double photovoltaic energy harvest in comparison with fixed panels and substantially reduce price

Vladislav Poulek; Martin Libra

334

Modelling tracks for roller coaster dynamics  

Microsoft Academic Search

In this work, an appropriate methodology for the accurate description of three dimensional track geometries, in the framework of multibody dynamics, is developed and implemented. Cubic splines, Akima splines and shape preserving splines are used as alternative track parameterization methods. The track centerline description uses Frenet frames that provide the track referential at every point. A pre-processor is used to

Joao Pombo; Jorge Ambrósio

2007-01-01

335

Integrated Track Splitting Filter for Manoeuvring Targets  

Microsoft Academic Search

ñ The paper presents a new algorithm for tracking a manoeuvring target in a cluttered environment. The algorithm combines the Integrated Track Splitting (ITS) lter with the Inter- acting Multiple Model (IMM) algorithm. The ITS lter is a multi- scan method for automatic target tracking in clutter. The multi- scan foundation provides good tracking capabilities even when the probability of

D. Mu; B. F. La Scala; R. J. Evans

336

Stability of continuous welded rail track  

Microsoft Academic Search

As the use of continuous welded rail (CWR) increases in track structures, derailing disasters associated with track buckling also increase in great numbers due to high compressive thermal stress. A three-dimensional CWR track model is developed in the present study to be used for extensive buckling analysis of CWR tracks subjected to temperature load. The analysis model is encoded into

Nam-Hyoung Lim; Nam-Hoi Park; Young-Jong Kang

2003-01-01

337

Central bank Financial Independence  

Microsoft Academic Search

Central bank independence is a multifaceted institutional design. The financial component has been seldom analysed. This paper intends to set a comprehensive conceptual background for central bank financial independence. Quite often central banks are modelled as robot like maximizers of some goal. This perspective neglects the fact that central bank functions are inevitably deployed on its balance sheet and have

J. Ramon Martinez-Resano

2004-01-01

338

North America Europe Central &  

E-print Network

1 North America Western Europe Central & Eastern Europe Latin America & Caribbean Middle East & Central Asia Asia Pacific Africa Population (100 millions) 0 5 10 15 20 25 30 35 North America Western Europe Central & Eastern Europe Latin America & Caribbean Middle East & Central Asia Asia Pacific Africa

Johnson, Matthew

339

Digital Pulse Processing and Gamma Ray Tracking  

NSDL National Science Digital Library

Two of the big changes in new generations of Nuclear Physics instrumentation will be the incorporation of digital processing and the use of gamma ray tracking. The Nuclear Physics Group at Daresbury has set up a project to investigate digital pulse processing for gamma ray detectors and how best to implement gamma ray tracking in large Germanium gamma ray detectors. Topics on this site include but are not limited to: gamma ray tracking, overview of the Gamma Ray Tracking Project, pictures of one of the tracking gamma ray detectors (TIGRE), pictures of test experiment, gamma ray tracking project publications, and links to other gamma ray tracking pages.

340

UUV-platform cooperation in covert tracking  

NASA Astrophysics Data System (ADS)

In underwater tracking, such as with an unmanned undersea vehicle (UUV) or torpedo it is advantageous to track a target covertly. The Maximum Likelihood-Probabilistic Data Association (ML-PDA) tracking algorithm, which has been demonstrated to establish and maintain track in low SNR/high clutter environments, is used to develop track information in a covert tracking application. By combining intermittent sensor data (active sonar) from the UUV with that of the launch platform (passive sonar) in the ML-PDA track algorithm, fewer active transmissions are required to establish and maintain a given track accuracy thereby reducing the chance of target alertment. We show that this is a viable operating model and demonstrate how sensor placement affects track accuracy, including determination of best sensor placement and requirements on active transmissions to maintain minimum tracking accuracy.

Blanding, Wayne R.; Willett, Peter K.; Bar-Shalom, Yaakov; Lynch, Robert S.

2005-09-01

341

Design of an IRI track system  

Microsoft Academic Search

This paper presents the algorithm of an IR image track system, its hardware and software design. TMS32020 (or C25), as the main tools of image processing, makes the IRI track experiment system closed-loop. Track algorithm and processing speed are tested in the dynamic tracking situation. The experiment results show that the system can track the target in real-time, the period

Lan Tao

1993-01-01

342

Structural and metric correlation of electro-optical and radar generated tracks  

NASA Astrophysics Data System (ADS)

Integration of electro-optical and radar generated tracks is critical for identifying accurate time and space position information in target tracking and providing a single integrated picture (SIP) of the dynamic situation. This paper proposes a new, robust, real-time algorithm to (i) correctly correlate data from several sensors and the existing system track, (ii) improve target tracking accuracy and (iii) identify when the data represent new tracks. The proposed algorithm uses metric data, linear, and area features extracted from optical and radar images. The major novelty of the algorithm is in use of robust and affine invariant structural relations built on the features for accurate correlation. These features are combined with intelligent adaptation of Kalman filter using Neural Networks. A proposed measure of confidence with the correlation decision is based on both structural and metric similarities of tracks to estimate both bias and random errors. The similarities are based on concepts from the abstract algebraic systems, generalized Gauss-Markov stochastic processes, and Kalman filters for n-dimensional time series that explicitly model measurement dependence on k previous measurements, M(t/t-1,t-2,...,t-k). These techniques are naturally combined with the hierarchical matching approach to increase the overall track accuracy. The proposed approach and algorithm for track correlation/matching is suitable for both centralized and distributed computing architecture.

Kovalerchuk, Boris

2007-04-01

343

Tracking scanning laser ophthalmoscope (TSLO)  

NASA Astrophysics Data System (ADS)

The effectiveness of image stabilization with a retinal tracker in a multi-function, compact scanning laser ophthalmoscope (TSLO) was demonstrated in initial human subject tests. The retinal tracking system uses a confocal reflectometer with a closed loop optical servo system to lock onto features in the fundus. The system is modular to allow configuration for many research and clinical applications, including hyperspectral imaging, multifocal electroretinography (MFERG), perimetry, quantification of macular and photo-pigmentation, imaging of neovascularization and other subretinal structures (drusen, hyper-, and hypo-pigmentation), and endogenous fluorescence imaging. Optical hardware features include dual wavelength imaging and detection, integrated monochromator, higher-order motion control, and a stimulus source. The system software consists of a real-time feedback control algorithm and a user interface. Software enhancements include automatic bias correction, asymmetric feature tracking, image averaging, automatic track re-lock, and acquisition and logging of uncompressed images and video files. Normal adult subjects were tested without mydriasis to optimize the tracking instrumentation and to characterize imaging performance. The retinal tracking system achieves a bandwidth of greater than 1 kHz, which permits tracking at rates that greatly exceed the maximum rate of motion of the human eye. The TSLO stabilized images in all test subjects during ordinary saccades up to 500 deg/sec with an inter-frame accuracy better than 0.05 deg. Feature lock was maintained for minutes despite subject eye blinking. Successful frame averaging allowed image acquisition with decreased noise in low-light applications. The retinal tracking system significantly enhances the imaging capabilities of the scanning laser ophthalmoscope.

Hammer, Daniel X.; Ferguson, R. Daniel; Magill, John C.; White, Michael A.; Elsner, Ann E.; Webb, Robert H.

2003-07-01

344

Real-Time Depth-Based Hand Detection and Tracking  

PubMed Central

This paper illustrates the hand detection and tracking method that operates in real time on depth data. To detect a hand region, we propose the classifier that combines a boosting and a cascade structure. The classifier uses the features of depth-difference at the stage of detection as well as learning. The features of each candidate segment are to be computed by subtracting the averages of depth values of subblocks from the central depth value of the segment. The features are selectively employed according to their discriminating power when constructing the classifier. To predict a hand region in a successive frame, a seed point in the next frame is to be determined. Starting from the seed point, a region growing scheme is applied to obtain a hand region. To determine the central point of a hand, we propose the so-called Depth Adaptive Mean Shift algorithm. DAM-Shift is a variant of CAM-Shift (Bradski, 1998), where the size of the search disk varies according to the depth of a hand. We have evaluated the proposed hand detection and tracking algorithm by comparing it against the existing AdaBoost (Friedman et al., 2000) qualitatively and quantitatively. We have analyzed the tracking accuracy through performance tests in various situations. PMID:24737965

Weon, Sun-Hee; Choi, Hyung-Il

2014-01-01

345

Real-time depth-based hand detection and tracking.  

PubMed

This paper illustrates the hand detection and tracking method that operates in real time on depth data. To detect a hand region, we propose the classifier that combines a boosting and a cascade structure. The classifier uses the features of depth-difference at the stage of detection as well as learning. The features of each candidate segment are to be computed by subtracting the averages of depth values of subblocks from the central depth value of the segment. The features are selectively employed according to their discriminating power when constructing the classifier. To predict a hand region in a successive frame, a seed point in the next frame is to be determined. Starting from the seed point, a region growing scheme is applied to obtain a hand region. To determine the central point of a hand, we propose the so-called Depth Adaptive Mean Shift algorithm. DAM-Shift is a variant of CAM-Shift (Bradski, 1998), where the size of the search disk varies according to the depth of a hand. We have evaluated the proposed hand detection and tracking algorithm by comparing it against the existing AdaBoost (Friedman et al., 2000) qualitatively and quantitatively. We have analyzed the tracking accuracy through performance tests in various situations. PMID:24737965

Joo, Sung-Il; Weon, Sun-Hee; Choi, Hyung-Il

2014-01-01

346

Drift and proportional tracking chambers  

SciTech Connect

Many techniques have been exploited in constructing tracking chambers, particle detectors which measure the trajectories and momenta of charged particles. The particular features of high-energy interactions - charged particle multiplicities, angular correlations and complex vertex topologies, to name a few - and the experimental environment of the accelerator - event rates, background rates, and so on - accent the importance of certain detector characteristics. In high energy e/sup +/e/sup -/, anti pp and pp interactions the final states are dominated by closely collimated jets of high multiplicity, requiring good track-pair resolution in the tracking chamber. High energy particles deflect very little in limited magnetic field volumes, necessitating good spatial resolution for accurate momentum measurements. The colliding beam technique generally requires a device easily adapted to full solid-angle coverage, and the high event rates expected in some of these machines put a premium on good time resolution. Finally, the production and subsequent decays of the tau, charmed and beautiful mesons will provide multiple vertex topologies. To reconstruct these vertices reliably will require considerable improvements in spatial resolution and track-pair resolution. This lecture considers the proportional counter and its descendant, the drift chamber, as tracking chambers. Its goal is to review the physics of this device in order to understand its performance limitations and promises.

Jaros, J.A.

1980-11-01

347

Object tracking through adaptive correlation  

NASA Astrophysics Data System (ADS)

Current U.S. Air Force interests include a desire to track an object based on its shape once it has been designated as a target. This paper discusses the use of a correlation based system to track an object through a series of images based on templates derived from previous image frames. The ability to track is extended to sequences which include multiple objects of interest within the field of view. This is accomplished by comparing the height and shape of the template autocorrelation to the peaks in the correlation of the template with the next scene. The result is to identify the region in the next scene which best matches the designated target. In addition to correlation plane postprocessing, an adaptive window is used to determine the template size in order to reduce the effects of correlator walk-off. The image sequences used were taken from a Forward Looking Infrared (FLIR) sensor mounted onboard a DC-3 aircraft. The images contain a T-55 tank and both an M-113 and a TAB-71 armored personnel carrier moving in a columnized formation along a dirt road. The goals of this research were to (1) track targets in the presence of other, and sometimes brighter, targets of similar shape; (2) to maintain small tracking errors; and (3) to reduce the effects of correlator walk-off.

Montera, Dennis A.; Rogers, Steven K.; Ruck, Dennis W.; Oxley, Mark E.

1993-10-01

348

Feature Tracking Using Reeb Graphs  

SciTech Connect

Tracking features and exploring their temporal dynamics can aid scientists in identifying interesting time intervals in a simulation and serve as basis for performing quantitative analyses of temporal phenomena. In this paper, we develop a novel approach for tracking subsets of isosurfaces, such as burning regions in simulated flames, which are defined as areas of high fuel consumption on a temperature isosurface. Tracking such regions as they merge and split over time can provide important insights into the impact of turbulence on the combustion process. However, the convoluted nature of the temperature isosurface and its rapid movement make this analysis particularly challenging. Our approach tracks burning regions by extracting a temperature isovolume from the four-dimensional space-time temperature field. It then obtains isosurfaces for the original simulation time steps and labels individual connected 'burning' regions based on the local fuel consumption value. Based on this information, a boundary surface between burning and non-burning regions is constructed. The Reeb graph of this boundary surface is the tracking graph for burning regions.

Weber, Gunther H.; Bremer, Peer-Timo; Day, Marcus S.; Bell, John B.; Pascucci, Valerio

2010-08-02

349

CENTRAL PLACE FORAGING AND PREY PREPARATION BY A SPECIALIST PREDATOR, THE MERLIN  

Microsoft Academic Search

By discarding inedible body parts of prey at greater distances from a central place, a central place forager can reduce the cost of prey transport and thus increase net rate of energy delivery. This hypothesis was tested in a specialist predator, the Merlin (Falco columbarius). Fifteen male Merlins were radio-tracked in Saskatoon (Canada) for this study. Merlins were more likely

NAY JOT S. SODHI; FALCO COLUMBARIUS

350

CDC's National Environmental Public Health Tracking Network UTAH Keeping Track, Promoting Health  

E-print Network

are at levels that are not harmful to human health. Addressing aCS225774_N CDC's National Environmental Public Health Tracking Network UTAH Keeping Track, Promoting Health "CDC's National Environmental Public Health Tracking Network is the most important

351

MANTRACK. Controlled Document Tracking Software  

SciTech Connect

MANTRACK is an automated, controlled document tracking system which does the following and reduces staff time required to perform these tasks: generates transmittal letters/receipts for every controlled copy issued (merged from a current distribution list), tracks the return of transmittal receipts, facilitates the check-in of the large number of transmittal receipts returned (using a barcode reader), generates a reminder list which prompts the cyclic review and evaluation of existing documents, generates overdue reminders for the return of past-due transmittal receipts, tracks the number of Procedure Change Directives (PCD) currently in effect for each procedure, generates and maintains current distribution lists for each document, generates a current table of contents when updates to the document (usually a procedure manual) are made.

Gibson, R.E.; Haas, R. [Oak Ridge National Lab., TN (United States)

1992-06-01

352

Mobile three dimensional gaze tracking.  

PubMed

Mobile eyetracking is a recent method enabling research on attention during real-life behavior. With the EyeSeeCam, we have recently presented a mobile eye-tracking device, whose camera-motion device (gazecam) records movies orientated in user's direction of gaze. Here we show that the EyeSeeCam can extract a reliable vergence signal, to measure the fixation distance. We extend the system to determine not only the direction of gaze for short distances more precisely, but also the fixation point in 3 dimensions (3D). Such information is vital, if gaze-tracking shall be combined with tasks requiring 3D information in the peri-personal space, such as grasping. Hence our method substantially extends the application range for mobile gaze-tracking devices and makes a decisive step towards their routine application in standardized clinical settings. PMID:21335867

Stoll, Josef; Kohlbecher, Stefan; Marx, Svenja; Schneider, Erich; Einhäuser, Wolfgang

2011-01-01

353

AHF Booster Tracking with SIMPSONS.  

SciTech Connect

The booster lattice for the Advanced Hydrotest Facility at Los Alamos was tracked in 3-D with the program SIMPSONS, using the full, symplectic lattice from TEAPOT, using the full set of magnet and misalignment errors, as well as full space-charge effects. The only corrections included were a rough closed-orbit correction and chromaticity correction. The lattice was tracked for an entire booster cycle, from multi-turn injection through acceleration to the top energy of 4 GeV, approximately 99,000 turns. An initial injection intensity of 4x1Ol2, injected in 25 turns, resulted in a final intensity of 3 . 2 {approx} 1 0a' {approx}t 4 GeV. Results of the tracking, including emittance growth, particle loss, and particle tune distributions are presented.

Johnson, D. E. (David E.); Neri, F. (Filippo)

2002-01-01

354

Magnetic Launch Assist Experimental Track  

NASA Technical Reports Server (NTRS)

In this photograph, a futuristic spacecraft model sits atop a carrier on the Magnetic Launch Assist System, formerly known as the Magnetic Levitation (MagLev) System, experimental track at the Marshall Space Flight Center (MSFC). Engineers at MSFC have developed and tested Magnetic Launch Assist technologies that would use magnetic fields to levitate and accelerate a vehicle along a track at very high speeds. Similar to high-speed trains and roller coasters that use high-strength magnets to lift and propel a vehicle a couple of inches above a guideway, a Magnetic Launch Assist system would electromagnetically drive a space vehicle along the track. A full-scale, operational track would be about 1.5-miles long and capable of accelerating a vehicle to 600 mph in 9.5 seconds. This track is an advanced linear induction motor. Induction motors are common in fans, power drills, and sewing machines. Instead of spinning in a circular motion to turn a shaft or gears, a linear induction motor produces thrust in a straight line. Mounted on concrete pedestals, the track is 100-feet long, about 2-feet wide, and about 1.5-feet high. The major advantages of launch assist for NASA launch vehicles is that it reduces the weight of the take-off, the landing gear, the wing size, and less propellant resulting in significant cost savings. The US Navy and the British MOD (Ministry of Defense) are planning to use magnetic launch assist for their next generation aircraft carriers as the aircraft launch system. The US Army is considering using this technology for launching target drones for anti-aircraft training.

1999-01-01

355

Solid state nuclear track detection  

SciTech Connect

This book is a basic work on the technique variously known as 'nuclear track analysis', 'track-etch technique', or 'solid state nuclear tract detection'. This has greatly expanded in range, scope and depth since the early 1960's, soon after its discovery, until there is hardly a field now in which it has not found an actual or potential use. Such applications range from archaeology, geology, space physics, medicine and biology to reactor physics and nuclear physics-to name but a few.

Durrani, S.A.; Bull, R.K.

1987-01-01

356

Front tracking for gas dynamics  

NASA Astrophysics Data System (ADS)

Front tracking is an adaptive computational method in which a lower dimensional moving grid is fitted to and follows the dynamical evolution of distinguished waves in a fluid flow. The method takes advantage of known analytic solutions, derived from the Rankine-Hugoniot relations, for idealized discontinuities. The method is applied to the Euler equations describing compressible gas dynamics. The main thrust is validation of the front tracking method: results are presented on a series of test problems for which comparison answers can be obtained by independent methods.

Chern, I. L.; Glimm, J.; McBryan, O.; Plohr, B.; Yaniv, S.

1984-05-01

357

Tracking animals to their death.  

PubMed

Migration may be a high-risk period. In a study involving three species of raptor migrating from Europe to Sub-Saharan Africa, Klaassen et al. (2014) satellite-tracked 51 out of 69 birds to their deaths and showed that rate of mortality during migration was 6x that during stationary phases when birds were on their winter and summer grounds. Travel across the Sahara was particularly risky. Satellite tracking has also been used to infer mortality in other taxa (e.g. sea turtles) and may allow high-risk hotspots to be identified for wide-ranging species. PMID:24192383

Hays, Graeme C

2014-01-01

358

USA Track & Field Coaching Manual. USA Track & Field.  

ERIC Educational Resources Information Center

This book presents comprehensive, ready-to-apply information from 33 world-class coaches and experts about major track and field events for high school and college coaches. The volume features proven predictive testing procedures; detailed event-specific technique instruction; carefully crafted training programs; and preparation and performance…

USA Track and Field, Inc., Indianapolis, IN.

359

Figure 12 Vehicle tracking Figure 11 Pedestrian tracking  

E-print Network

selection of the feature window size (an issue discussed by Okutomi and Kanade9 ) in order to select Technology, 40(1):21-29, February, 1991. 9 M. Okutomi and T. Kanade, "A locally adaptive window for signal.K. Khosla, and T. Kanade, "Visual tracking of a moving target by a camera mounted on a robot: a combination

Brandt, Scott A.

360

Robotic vehicle with multiple tracked mobility platforms  

DOEpatents

A robotic vehicle having two or more tracked mobility platforms that are mechanically linked together with a two-dimensional coupling, thereby forming a composite vehicle of increased mobility. The robotic vehicle is operative in hazardous environments and can be capable of semi-submersible operation. The robotic vehicle is capable of remote controlled operation via radio frequency and/or fiber optic communication link to a remote operator control unit. The tracks have a plurality of track-edge scallop cut-outs that allow the tracks to easily grab onto and roll across railroad tracks, especially when crossing the railroad tracks at an oblique angle.

Salton, Jonathan R. (Albuquerque, NM); Buttz, James H. (Albuquerque, NM); Garretson, Justin (Albuquerque, NM); Hayward, David R. (Wetmore, CO); Hobart, Clinton G. (Albuquerque, NM); Deuel, Jr., Jamieson K. (Albuquerque, NM)

2012-07-24

361

Design of an IRI track system  

NASA Astrophysics Data System (ADS)

This paper presents the algorithm of an IR image track system, its hardware and software design. TMS32020 (or C25), as the main tools of image processing, makes the IRI track experiment system closed-loop. Track algorithm and processing speed are tested in the dynamic tracking situation. The experiment results show that the system can track the target in real-time, the period from collecting data to the output of the track control signal is less than 8.5 ms, and with a good ability to resist noise and disturbance.

Tao, Lan

1993-04-01

362

Particle tracking and mean residence time in barchan dunes  

NASA Astrophysics Data System (ADS)

We analyze sediment particles motions in steady-state barchan dunes by tracking individual cells of a 3-D cellular automaton dune model. The overall sediment flux may be decomposed into advective and dispersive fluxes to estimate the relative contribution of the underlying physical processes to the barchan dune shape. The net lateral sediment transport from the center to the horns indicates that dispersion on the stoss slope is more efficient than avalanches on the lee slope. The combined effect of these two antagonistic dispersive processes restricts the lateral mixing of sediment particles in the central region of barchan dunes. Then, for different flow strength and dune size, we find that the mean residence time of sediment particles in barchan dunes is equal to the surface of the central longitudinal dune slices divided by the input sand flux. We infer that this central slice contains most of the relevant information about barchan dune morphodynamics. Finally, we initiate a discussion about sediment transport and memory in presence of bedforms using the advantages of the particle tracking technique.

Zhang, Deguo; Narteau, Clement; Rozier, Olivier

2013-04-01

363

Central pontine myelinolysis  

MedlinePLUS

Central pontine myelinolysis is brain cell dysfunction caused by the destruction of the layer ( myelin sheath ) covering ... nerve to another. The most common cause of central pontine myelinolysis is a quick rise in the ...

364

Axioms for Centrality  

E-print Network

Given a social network, which of its nodes are more central? This question has been asked many times in sociology, psychology and computer science, and a whole plethora of centrality measures (a.k.a. centrality indices, or rankings) were proposed to account for the importance of the nodes of a network. In this paper, we try to provide a mathematically sound survey of the most important classic centrality measures known from the literature and propose an axiomatic approach to establish whether they are actually doing what they have been designed for. Our axioms suggest some simple, basic properties that a centrality measure should exhibit. Surprisingly, only a new simple measure based on distances, harmonic centrality, turns out to satisfy all axioms; essentially, harmonic centrality is a correction to Bavelas's classic closeness centrality designed to take unreachable nodes into account in a natural way. As a sanity check, we examine in turn each measure under the lens of information retrieval, leveraging sta...

Boldi, Paolo

2013-01-01

365

Central line infections - hospitals  

MedlinePLUS

... and increase how long you are in the hospital. Your central line needs special care to prevent ... The hospital staff will use aseptic technique when a central line is put in your chest or arm. Aseptic ...

366

Central Tendency and Variability  

NSDL National Science Digital Library

This chapter presents two important interrelated topics in statistics: central tendency and variability. Measures of central tendency show how similar the data points in a set of data are, while measures of variability show how much the

Edwin P. Christmann

2008-11-01

367

Leadership Lessons from the Fast Track Programme for Teachers in England  

ERIC Educational Resources Information Center

The Fast Track Teaching (FTT) programme in England, developed and funded by central government, is an accelerated leadership development programme designed for teachers in the early years of their careers. It was intended to promote their retention and rapid promotion in the profession through advancing their leadership skills. It provides a…

Jones, Jeffrey

2010-01-01

368

Location Tracking in a Wireless Sensor Network by Mobile Agents and Its Data Fusion Strategies  

Microsoft Academic Search

The wireless sensor network is an emerging technology that may greatly facilitate human life by providing ubiquitous sensing, computing, and communi- cation capability, through which people can more closely interact with the envi- ronment wherever he\\/she goes. To be context-aware, one of the central issues in sensor networks is location tracking, whose goal is to monitor the roaming path of

Yu-chee Tseng; Sheng-po Kuo; Hung-wei Lee; Chi-fu Huang

2003-01-01

369

Fast Track Randomized Controlled Trial to Prevent Externalizing Psychiatric Disorders: Findings from Grades 3 to 9  

ERIC Educational Resources Information Center

Objective: This study tests the efficacy of the Fast Track Program in preventing antisocial behavior and psychiatric disorders among groups varying in initial risk. Method: Schools within four sites (Durham, NC; Nashville, TN; Seattle, WA; and rural central Pennsylvania) were selected as high-risk institutions based on neighborhood crime and…

Journal of the American Academy of Child & Adolescent Psychiatry, 2007

2007-01-01

370

A Multiscale Tracking Algorithm for the Coronary Extraction in MSCT Angiography  

Microsoft Academic Search

This paper deals with the extraction of the coronary network on dynamic volume sequences, acquired in multi-slice spiral computed tomography (MSCT). The proposed approach makes use of a tracking algorithm of the vascular structure, combining a 3D geometric moment operator with a multiscale Hessian filter to estimate the vessel central axis location, its local diameter and orientation. The method performs

G. Yang; A. Bousse; C. Toumoulin; H. Shu

2006-01-01

371

Three-dimensional tracking solar energy concentrator and method for making same  

NASA Technical Reports Server (NTRS)

A three dimensional tracking solar energy concentrator, consisting of a stretched aluminized polymeric membrane supported by a hoop, was presented. The system is sturdy enough to withstand expected windage forces and precipitation. It can provide the high temperature output needed by central station power plants for power production in the multi-megawatt range.

Miller, C. G.; Pohl, J. G. (inventors)

1977-01-01

372

A New Perspective on Southern Hemisphere Storm Tracks.  

NASA Astrophysics Data System (ADS)

A detailed view of Southern Hemisphere storm tracks is obtained based on the application of filtered variance and modern feature-tracking techniques to a wide range of 45-yr European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-40) data. It has been checked that the conclusions drawn in this study are valid even if data from only the satellite era are used. The emphasis of the paper is on the winter season, but results for the four seasons are also discussed. Both upper- and lower-tropospheric fields are used. The tracking analysis focuses on systems that last longer than 2 days and are mobile (move more than 1000 km). Many of the results support previous ideas about the storm tracks, but some new insights are also obtained. In the summer there is a rather circular, strong, deep high-latitude storm track. In winter the high-latitude storm track is more asymmetric with a spiral from the Atlantic and Indian Oceans in toward Antarctica and a subtropical jet related lower-latitude storm track over the Pacific, again tending to spiral poleward. At all times of the year, maximum storm activity in the higher-latitude storm track is in the Atlantic and Indian Ocean regions. In the winter upper troposphere, the relative importance of, and interplay between, the subtropical and subpolar storm tracks is discussed. The genesis, lysis, and growth rate of lower-tropospheric winter cyclones together lead to a vivid picture of their behavior that is summarized as a set of overlapping plates, each composed of cyclone life cycles. Systems in each plate appear to feed the genesis in the next plate through downstream development in the upper-troposphere spiral storm track. In the lee of the Andes in South America, there is cyclogenesis associated with the subtropical jet and also, poleward of this, cyclogenesis largely associated with system decay on the upslope and regeneration on the downslope. The genesis and lysis of cyclones and anticyclones have a definite spatial relationship with each other and with the Andes. At 500 hPa, their relative longitudinal positions are consistent with vortex-stretching ideas for simple flow over a large-scale mountain. Cyclonic systems near Antarctica have generally spiraled in from lower latitudes. However, cyclogenesis associated with mobile cyclones occurs around the Antarctic coast with an interesting genesis maximum over the sea ice near 150°E. The South Pacific storm track emerges clearly from the tracking as a coherent deep feature spiraling from Australia to southern South America. A feature of the summer season is the genesis of eastward-moving cyclonic systems near the tropic of Capricorn off Brazil, in the central Pacific and, to a lesser extent, off Madagascar, followed by movement along the southwest flanks of the subtropical anticyclones and contribution to the “convergence zone” cloud bands seen in these regions.

Hoskins, B. J.; Hodges, K. I.

2005-10-01

373

Design of a photovoltaic central power station  

SciTech Connect

Photovoltaic central power station designs have been developed for both high-efficiency flat-panel arrays and two-axis tracking concentrator arrays. Both designs are based on a site adjacent to the Saguaro Power Station of Arizona Public Service. The plants are 100 MW each, made of 5 MW subfields. The site specific designs allow detailed cost estimate for site preparation, installation, and engineering. These designs are summarized and cost estimates analyzed. Provided also are recommendations for future work to reduce system cost for each plant design.

Not Available

1984-02-01

374

Application of ground-penetrating radar to railway track substructure maintenance management  

NASA Astrophysics Data System (ADS)

Railway track substructure maintenance management is the process of utilizing railroad resources to maintain and upgrade the track substructure. The process begins with a measure of the track condition to evaluate the substructure performance, determine locations along the track that require maintenance, and identify appropriate solutions. Ground penetrating radar (GPR) has been proposed as a potentially valuable tool for this purpose. The objective of the research was to develop GPR testing and data interpretation techniques suitable for use by railroad personnel in this application. The principle of GPR operation is the transmission of short electromagnetic waves into the subsurface and recording the resulting signal of the reflected waves. Electromagnetic waves are influenced most significantly by the dielectric constant of the soil. The dielectric constant is most affected by moisture content making GPR a valuable tool for locating trapped water that will cause increased track deterioration rates. GPR has the potential to evaluate the thicknesses and properties of the substructure layers on a continuous, non-destructive basis to improve the process of diagnosing substructure causes of track performance deterioration. GPR railroad research at UMass started with the construction of a test track. Different track structure components were tested to determine their effects on the GPR data. Approximately 200 tests were conducted. Subsequently, about 275 miles of data were collected on several U.S. railroads including Amtrak, Conrail, New England Central, and Burlington Northern Santa Fe, and in England on AMEC Rail. The data were studied to determine how well GPR can define substructure conditions, identify track problem areas, and provide an indication of the cause of the problem. The analysis included comparison of the GPR data to track geometry, subsurface stratigraphy, and ballast condition (fouling and moisture). GPR processing techniques were developed to simplify interpretation of the data. The results showed that GPR could locate zones of increased substructure degradation at over 75% of the sites.

Sussmann, Theodore Reinhold, Jr.

375

Central venous catheters - ports  

MedlinePLUS

Central venous catheter - subcutaneous; Port-a-Cath; InfusaPort; PasPort; Subclavian port; Medi - port; Central venous line - port ... A central venous catheter is a tube that goes into a vein in your chest and ends at your ...

376

Central Asian Cataloging  

Microsoft Academic Search

SUMMARY. Languages of Central Asia present unique problems in cataloging. Reference works are often scarce, unobtainable, or non- existent, &pecially for Tibetan and Mongolian materials. Single-cut- ter numbers for languages result in shelflisting problems in some Central Asian languages. LC subject headings for Central Asian ma- terials are generally adequate except for Tibetan. The breakup of the Soviet Union may

Michael Walter

1993-01-01

377

European Central Bank  

NSDL National Science Digital Library

Together with the national central banks of the European Union, the European Central Bank (ECB) collects statistical information and governs the European System of Central Banks (ESCB). Legal texts about the ECB, the ESCB, and the European Monetary Union (EMI) are provided in addition to press releases, speeches, euro area statistics and selected publications of the EMI (in eleven European languages).

378

Multiple Kernel Tracking with SSD  

Microsoft Academic Search

Kernel-based objective functions optimized using the mean shift algorithm have been demonstrated as an effective means of tracking in video sequences. The resulting algo- rithms combine the robustness and invariance properties af- forded by traditional density-based measures of image sim- ilarity, while connecting these techniques to continuous op- timization algorithms. This paper demonstrates a connection between kernel- based algorithms and

Gregory D. Hager; Maneesh Dewan; Charles V. Stewart

2004-01-01

379

Program Tracks Cost Of Travel  

NASA Technical Reports Server (NTRS)

Travel Forecaster is menu-driven, easy-to-use computer program that plans, forecasts cost, and tracks actual vs. planned cost of business-related travel of division or branch of organization and compiles information into data base to aid travel planner. Ability of program to handle multiple trip entries makes it valuable time-saving device.

Mauldin, Lemuel E., III

1993-01-01

380

On the TREC Blog Track  

Microsoft Academic Search

The rise of blogging as a new grassroots publishing medium and the many interesting peculiarities that characterise blogs compared to other genres of documents opened up several new interesting research areas in the information retrieval field. The Blog track was introduced in 2006 as part of the renowned Text REtrieval Conference (TREC) evaluation fo- rum, to drive research on the

Iadh Ounis; Ian Soboroff

2008-01-01

381

Fast-Track Teacher Recruitment.  

ERIC Educational Resources Information Center

Schools need a Renaissance human-resources director to implement strategic staffing and fast-track teacher-recruitment plans. The HR director must attend to customer satisfaction, candidate supply, web-based recruitment possibilities, stabilization of newly hired staff, retention of veteran staff, utilization of retired employees, and latest…

Grant, Franklin Dean

2001-01-01

382

Microbial Source Tracking Case Studies  

E-print Network

Soil and Environmental Microbiologist May 22, 2012 #12;#12;National Security Assessment: Water Scarcity Disrupting U.S. and Three Continents http://www.circleofblue.org/waternews/2012/world/national- security-assessment-water-scarcity.W.; Lubbers, J.F. Microbial Source Tracking in a Watershed Dominated by Swine. Water 2010, 2, 587-604. #12

383

Evaluating a Storm Tracking Algorithm  

Microsoft Academic Search

Storm tracking algorithms have been evaluated either indirectly based on fields advected using their motion vectors or by validating each association decision in a labor-intensive manner. In this paper, we introduce three bulk statistics that are measures of mismatch error, jumps and of duration. These statistics allow us to rank commonly proposed association heuristics (centroid projection, overlap, cost functions, etc.)

Valliappa Lakshmanan; Travis Smith

384

Emergency Brake for Tracked Vehicles  

NASA Technical Reports Server (NTRS)

Caliper brake automatically stops tracked vehicle as vehicle nears end of travel. Bar on vehicle, traveling to right, dislodges block between brake pads. Pads then press against bar, slowing vehicle by friction. Emergencybraking system suitable for elevators, amusement rides and machine tools.

Green, G. L.; Hooper, S. L.

1986-01-01

385

Spark Chamber Track Measuring System  

Microsoft Academic Search

S>A system is described for the projection, digitizing, and recording of ; photographed spark chamber tracks. A SloSyn-driven projector automatically ; frames the film and projects the traeks on a screen mounted in a precision ; commercial plotting board. A reticle projector, mounted on the plotting board ; pen holder, is manually positioned by means of the plotting board drive

James A. Deshong Jr.; J. A. Jr

1962-01-01

386

Assistant Professor Tenure Track Position  

E-print Network

Assistant Professor Tenure Track Position School of Social Work The Michigan State University School of Social Work in the College of Social Science is seeking applications for an Assistant Professor content areas including gerontology, child welfare, and health/mental health. The research environment

Azevedo, Ricardo

387

Deer Tracks in the City?  

NSDL National Science Digital Library

"Why would a deer print be in the city?" wondered a student. She had noticed the track near a grocery store that morning with her mother. She was familiar with deer and had noticed their prints on a trip to a local museum; however, she had never seen a de

Antonia Rodriguez

2009-10-01

388

Tritium inventory tracking and management  

Microsoft Academic Search

This investigation has identified a number of useful applications of the analysis of the tracking and management of the tritium inventory in the various subsystems and components in a DT fusion reactor system. Due to the large amounts of tritium that will need to be circulated within such a plant, and the hazards of dealing with the tritium an electricity

T. W. Eichenberg; A. C. Klein

1990-01-01

389

Math on the Fast Track  

ERIC Educational Resources Information Center

In this article, the author relates how a math-assessment software has allowed his school to track the academic progress of its students. The author relates that in the first year that the software was deployed, schoolwide averages in terms of national standing on the math ITBS rose from the 42nd to 59th percentile. In addition, a significant…

Howe, Quincy

2006-01-01

390

Zero-tracking adaptive filters  

Microsoft Academic Search

A new type of adaptive filter is proposed which can directly estimate and track its own zeros. The adaptation algorithm adapts the zeros of the filter and hence, indirectly, the filter coefficients. To first order in the adaptation parameter, the new algorithm is equivalent to the usual LMS algorithm, and thus it shares the same convergence properties with the latter.

SOPHOCLES J. ORFANIDIS; LOY MAUGH VAIL

1986-01-01

391

Non-Tracking Solar Concentrators  

Microsoft Academic Search

This thesis is concerned with the development of cost-effective non-tracking concentrating collectors for solar energy purposes. As a result of this work, certain fundamental limits of concentrator performance have been identified, and practical configurations which approach these performance limits have been suggested. Limits of radiation flux concentration are derived from the Second Law of Thermodynamics for two and three dimensional

David Roy Mills

1980-01-01

392

Etching fission tracks in zircons  

USGS Publications Warehouse

A new technique has been developed whereby fission tracks can be etched in zircon with a solution of sodium hydroxide at 220??C. Etching time varied between 15 minutes and 5 hours. Colored zircon required less etching time than the colorless varieties.

Naeser, C.W.

1969-01-01

393

Tracking Radioactive Sources in Commerce  

E-print Network

Tracking Radioactive Sources in Commerce Deborah Kopsick, U.S. Environmental Protection Agency Schultz, Dudley Pinson; NorthWest Nuclear, LLC Millions of radioactive material packages are shipped each year © In transit, sealed radioactive sources may be vulnerable to loss or theft due to: � Minimal

394

Analysis of Tropical Cyclone Tracks in the North Indian Ocean  

NASA Astrophysics Data System (ADS)

Cyclones are regarded as one of the most dangerous meteorological phenomena of the tropical region. The probability of landfall of a tropical cyclone depends on its movement (trajectory). Analysis of trajectories of tropical cyclones could be useful for identifying potentially predictable characteristics. There is long history of analysis of tropical cyclones tracks. A common approach is using different clustering techniques to group the cyclone tracks on the basis of certain characteristics. Various clustering method have been used to study the tropical cyclones in different ocean basins like western North Pacific ocean (Elsner and Liu, 2003; Camargo et al., 2007), North Atlantic Ocean (Elsner, 2003; Gaffney et al. 2007; Nakamura et al., 2009). In this study, tropical cyclone tracks in the North Indian Ocean basin, for the period 1961-2010 have been analyzed and grouped into clusters based on their spatial characteristics. A tropical cyclone trajectory is approximated as an open curve and described by its first two moments. The resulting clusters have different centroid locations and also differently shaped variance ellipses. These track characteristics are then used in the standard clustering algorithms which allow the whole track shape, length, and location to be incorporated into the clustering methodology. The resulting clusters have different genesis locations and trajectory shapes. We have also examined characteristics such as life span, maximum sustained wind speed, landfall, seasonality, many of which are significantly different across the identified clusters. The clustering approach groups cyclones with higher maximum wind speed and longest life span in to one cluster. Another cluster includes short duration cyclonic events that are mostly deep depressions and significant for rainfall over Eastern and Central India. The clustering approach is likely to prove useful for analysis of events of significance with regard to impacts.

Patwardhan, A.; Paliwal, M.; Mohapatra, M.

2011-12-01

395

40 CFR 262.84 - Tracking document.  

Code of Federal Regulations, 2010 CFR

...CONTINUED) STANDARDS APPLICABLE TO GENERATORS OF HAZARDOUS WASTE Transfrontier Shipments...by water (bulk shipments only) the generator must forward the tracking document...originate at the site of generation, the generator must forward the tracking...

2010-07-01

396

49 CFR 213.331 - Track surface.  

Code of Federal Regulations, 2010 CFR

...control harmonics on jointed track with staggered joints, the crosslevel differences shall...created by 7 joints. Track with joints staggered less than 10 feet shall not be considered as having staggered joints. Joints within the 7 low...

2010-10-01

397

Childhood Cancer Tracking Initiative in Massachusetts  

E-print Network

Childhood Cancer Tracking Initiative in Massachusetts: Developing a New Electronic Tool Presented (CEH) Massachusetts Department of Public Health (MDPH) #12;Childhood Cancer Tracking Initiative "Develop methods for linking environmental databases with childhood cancer incidence data to identify

398

Work Flow Analysis Report Action Tracking  

SciTech Connect

The Work Flow Analysis Report will be used to facilitate the requirements for implementing the further deployment of the Action Tracking module of Passport. The report consists of workflow integration processes for Action Tracking.

PETERMANN, M.L.

1999-12-14

399

Tracking dynamic regions of texture and shape  

E-print Network

The tracking of visual phenomena is a problem of fundamental importance in computer vision. Tracks are used in many contexts, including object recognition, classification, camera calibration, and scene understanding. ...

Migdal, Joshua N. (Joshua Nicholas), 1979-

2007-01-01

400

49 CFR 213.359 - Track stiffness.  

Code of Federal Regulations, 2010 CFR

...STANDARDS Train Operations at Track Classes 6 and Higher § 213.359 Track stiffness...generated at maximum permissible train speeds, cant deficiencies and surface...generated at maximum permissible train speeds, cant deficiencies and lateral...

2010-10-01

401

Design of photovoltaic central power station concentrator array  

SciTech Connect

A design for a photovoltaic central power station using tracking concentrators has been developed. The 100 MW plant is assumed to be located adjacent to the Saguaro Power Station of Arizona Public Service. The design assumes an advanced Martin Marietta two-axis tracking fresnel lens concentrator. The concentrators are arrayed in 5 MW subfields, each with its own power conditioning unit. The photovoltaic plant output is connected to the existing 115 kV switchyard. The site specific design allows detailed cost estimates for engineering, site preparation, and installation. Collector and power conditioning costs have been treated parametrically.

Not Available

1984-02-01

402

Cooperative Transit Tracking using Smart-phones  

Microsoft Academic Search

Real-time transit tracking is gaining popularity as a means for transit agencies to improve the rider experience. However, many transit agencies lack either the funding or initiative to provide such tracking services. In this paper, we describe a crowd-sourced alternative to official transit tracking, which we call cooperative transit tracking. Participating users install an application on their smart-phone. With the

Arvind Thiagarajan; James Biagioni; Tomas Gerlich; Jakob Eriksson

2010-01-01

403

Drift chamber tracking with neural networks  

SciTech Connect

We discuss drift chamber tracking with a commercial log VLSI neural network chip. Voltages proportional to the drift times in a 4-layer drift chamber were presented to the Intel ETANN chip. The network was trained to provide the intercept and slope of straight tracks traversing the chamber. The outputs were recorded and later compared off line to conventional track fits. Two types of network architectures were studied. Applications of neural network tracking to high energy physics detector triggers is discussed.

Lindsey, C.S.; Denby, B.; Haggerty, H.

1992-10-01

404

Track formation models: A short review  

NASA Astrophysics Data System (ADS)

Two models of nuclear track formation in minerals, one due to Fleischer, Price and Walker, the other to Dartyge et al. are briefly described, and their respective drawbacks discussed. New experimental results, with implications on the modelling of the track behavior, on the measurement of the etch rate of 150 MeV/amu U ion tracks, and on the determination of fission track annealing kinetics in minerals, are reported.

Pellas, P.; Perron, C.

1984-02-01

405

More Durable Tracks for Heavy Vehicles  

NASA Technical Reports Server (NTRS)

Tie bars instead of threaded fasteners make track throwing less likely. Proposed undercarriage for tank or bulldozer has flanged edges to prevent rocks and other road debris from getting caught in track drive and damaging or casting off track. Improved track has no threaded fasteners to be loosened by road shock and vibration. Continuous chain of floating guide bars articulated at web junctions. Pins replace bolted connections. Guide bars and flanges on vehicle keep out stones.

Collins, Earl R., Jr.

1987-01-01

406

CRIMINAL JUSTICE MAJOR CRIMINAL JUSTICE SCHOLARS TRACK  

E-print Network

CRIMINAL JUSTICE MAJOR CRIMINAL JUSTICE SCHOLARS TRACK The Criminal Justice Scholars Track prepares the opportunity for select students to work closely with Criminal Justice professors who will mentor them in the Criminal Justice Scholars Track will engage in research and rich discussion as they study relevant Criminal

Wu, Shin-Tson

407

Tracking mobile users in wireless communications networks  

Microsoft Academic Search

Tracking strategies for mobile wireless networks are studied. A cellular architecture in which base stations that are interconnected by a wired network communicate with mobile units via wireless links is assumed. The cost of utilizing the wireless links for the actual tracking of mobile users is considered. A tracking strategy in which a subset of all base stations is selected

Amotz Bar-Noy; Ilan Kessler

1993-01-01

408

Track Picture Book. Elementary Science Study.  

ERIC Educational Resources Information Center

This picture book was designed to be used with an Elementary Science Study unit that provides opportunities for students in grades 4-6 to study animal tracks. Shown within this book are numerous examples of tracks, including those of tires, human beings, animal tracks, and others in various media, such as snow, sand, mud, dust, and cement. (CS)

Webster, David; And Others

409

Long-Term Tracking Through Failure Cases  

Microsoft Academic Search

Long term tracking of an object, given only a single instance in an initial frame, remains an open problem. We propose a visual tracking algorithm, robust to many of the difficulties which often occur in real-world scenes. Correspondences of edge-based features are used, to overcome the reliance on the texture of the tracked object and improve invariance to lighting. Furthermore

Karel Lebeda; Simon Hadfield; Jiri Matas; Richard Bowden

2013-01-01

410

Advances in Eye Tracking in Infancy Research  

ERIC Educational Resources Information Center

In 2004, McMurray and Aslin edited for "Infancy" a special section on eye tracking. The articles in that special issue revealed the enormous promise of automatic eye tracking with young infants and demonstrated that eye-tracking procedures can provide significant insight into the emergence of cognitive, social, and emotional processing in infancy.…

Oakes, Lisa M.

2012-01-01

411

Multiple-target tracking with radar applications  

Microsoft Academic Search

The theory and evaluation methods for the design of multiple target tracking (MTT) systems are examined. The Kalman and fixed-gain filtering, techniques for adaptive filtering, and the selection of tracking coordinate systems for filtering and prediction are described. Gating and data association techniques, measurement formation and processing for MTT, and methods for track confirmation and deletion are discussed. MTT system

S. S. Blackman

1986-01-01

412

Viterbi Data Association Tracking using Amplitude Information  

Microsoft Academic Search

The problem of tracking under adverse conditions, such as when the target SNR is low, is known to be a difficult one . One approach to handling this problem is to use a sophisticat ed tracking method based on the multi-hypothesis tracking (MH T) al- gorithm. An alternative is to incorporate additional infor mation such as the strength of the

Barbara F. La Scala

413

Interactive Art using Ubisense Motion Tracking Technology  

E-print Network

? Parameters to be tracked Sound effects ? ? Architectural Creative #12;Ubisense Ubisense · What is Ubisense of sounds and sound effects would we use? ­ Volume ­ Pitch ­ Tempo Creative decisions · What sort #12;Final specification Parameters to be tracked Sound effects Position Motion tracking Ubisense Sound

van Bakel, Steffen

414

ADAPTIVE ROBUST TRACKING CONTROL OF PRESSURE  

E-print Network

1---- ·1· ADAPTIVE ROBUST TRACKING CONTROL OF PRESSURE TRAJECTORY BASED ON KALMAN FILTER * CAO, tracking control of both force trajectory and position trajectory need the high-precision pressure control in pneumatic systems. In this paper, an adaptive robust pressure controller is designed to enhance the tracking

Yao, Bin

415

CDC's National Environmental Public Health Tracking Network LOUISIANA Keeping Track, Promoting Health  

E-print Network

.S. coastal states were devastated. The Louisiana Tracking Program has been developing a response to the oilCS225774_L CDC's National Environmental Public Health Tracking Network LOUISIANA Keeping Track their networks every day to improve the health of their communities. Why Tracking Matters in Louisiana Louisiana

416

Track to track association performed on mahalanobis distance in both observable and unobservable situations  

Microsoft Academic Search

Statistical procedures for inter-arrays bearing track to track association in passive sonar are adressed. Usually this task was performed directly on bearing measurements which requires transmission of the whole tracks during long time periods. Here a simpler suboptimal approach is presented : bearings tracks are processed on each platform to obtain local kinematic source parameters estimates which are exchanged by

J. M. Passerieux; D. Pillon; P. Verveur

1989-01-01

417

Hollow fission fragment tracks in fluorapatite  

NASA Astrophysics Data System (ADS)

Spontaneous fission of uranium in minerals creates a damaged "track" along the trajectory of the fission fragments. Fission tracks in fluorapatite, enlarged by chemical etching, are widely used in geologic age-dating and the reconstruction of the thermal history of Earth's crust. However, despite this wide spread application, there have been no systematic studies of the internal structure of unetched fission tracks or the atomic-scale process of track annealing. In this research, fission tracks in fluorapatite are demonstrated to be nano-channels instead of amorphous cores as had been assumed. The formation of hollow tracks is ascribed to the highly ionizing energy deposition of fission fragments inducing radiolytic decomposition of fluorapatite accompanied by the loss of volatile elements. The mechanism for thermal annealing of hollow tracks in fluorapatite is shown to be entirely different from that of amorphous tracks in zircon. The discontinuity of fission tracks, in addition to the shrinkage, prevents chemicals from entering into the hollow tracks for further etching, and then significantly reduces the etched length. The shrinkage of hollow fission tracks results from thermo-emission of vacancies or gaseous species from the cavities to surrounding solids instead of atomic-scale recovery of the amorphous core. The high diffusivity of atoms on the surface of hollow tracks causes the discontinuity of tracks either by Rayleigh instability, by Brownian motion, or by preferential motion of track segments. The preferential motion of atoms along c-axis causes more rapid annealing of fission tracks perpendicular to the c-axis. Under the electron beam, the hollow tracks segment into droplets and the track segments randomly move at room temperature or preferentially move along c-axis at high temperatures. The radiolytic annealing results from beam-enhanced diffusion, which is similar to thermally enhanced diffusion. The similarity in the morphology of fission tracks and electron beam-induced bubbles and their preferential elongation along c-axis at high temperatures further confirm that the tracks are actually hollow channels. The radius profile of fission track along its trajectory has been calculated. These data will be critical to developing an atomic-scale model of track fading as it applied to geologic age-dating.

Li, Weixing

418

Secular Trends in Storm Track Activity From Explicit Tracking  

NASA Astrophysics Data System (ADS)

Forty-seven years of observational data as reanalyzed by the National Centers for Environmental Prediction (NCEP) have been used to identify and track all mid-latitude storms using the methodology of Sinclair (1997), resulting in a cyclone track database for both hemispheres spanning the period 1953-1999. This database is interrogated to identify trends in mid-latitude storminess. Time series of monthly cyclone numbers with the annual cycle removed are presented. Results show a ~4% increase in overall Northern Hemisphere (NH) cyclone numbers followed by a decrease after about 1985, while the Southern Hemisphere (SH) shows a steady ~10% decrease. However, the trend in particularly intense storms (the most intense 5%) shows a larger (~15%) upward trend in the NH and a smaller upward trend in the SH. In the NH, increases in the frequency of intense storms occur over much of the North Pacific Ocean east of about 150E and over the downstream end of the North Atlantic storm track (northern Europe and Iceland). However (with the exception of northern Europe), the inhabited NH land areas have experienced small decreases in the frequency of strong mid-latitude storms. Results are discussed in the light of other similar studies, trends in data coverage and quality and GCM simulations.

Sinclair, M. R.

2002-05-01

419

Tracking down hyper-boosted top quarks  

E-print Network

The identification of hadronically decaying heavy states, such as vector bosons, the Higgs, or the top quark, produced with large transverse boosts has been and will continue to be a central focus of the jet physics program at the Large Hadron Collider (LHC). At a future hadron collider working at an order-of-magnitude larger energy than the LHC, these heavy states would be easily produced with transverse boosts of several TeV. At these energies, their decay products will be separated by angular scales comparable to individual calorimeter cells, making the current jet substructure identification techniques for hadronic decay modes not directly employable. In addition, at the high energy and luminosity projected at a future hadron collider, there will be numerous sources for contamination including initial- and final-state radiation, underlying event, or pile-up which must be mitigated. We propose a simple strategy to tag such "hyper-boosted" objects that defines jets with radii that scale inversely proportional to their transverse boost and combines the standard calorimetric information with charged track-based observables. By means of a fast detector simulation, we apply it to top quark identification and demonstrate that our method efficiently discriminates hadronically decaying top quarks from light QCD jets up to transverse boosts of 20 TeV. Our results open the way to tagging heavy objects with energies in the multi-TeV range at present and future hadron colliders.

Andrew J. Larkoski; Fabio Maltoni; Michele Selvaggi

2015-03-26

420

Implementation and experimental results of 4D tumor tracking using robotic couch  

PubMed Central

Purpose: This study presents the implementation and experimental results of a novel technique for 4D tumor tracking using a commercially available and commonly used treatment couch and evaluates the tumor tracking accuracy in clinical settings. Methods: Commercially available couch is capable of positioning the patient accurately; however, currently there is no provision for compensating physiological movement using the treatment couch in real-time. In this paper, a real-time couch tracking control technique is presented together with experimental results in tumor motion compensation in four dimensions (superior-inferior, lateral, anterior-posterior, and time). To implement real-time couch motion for tracking, a novel control system for the treatment couch was developed. The primary functional requirements for this novel technique were: (a) the treatment couch should maintain all previous/normal features for patient setup and positioning, (b) the new control system should be used as a parallel system when tumor tracking would be deployed, and (c) tracking could be performed in a single direction and/or concurrently in all three directions of the couch motion (longitudinal, lateral, and vertical). To the authors’ best knowledge, the implementation of such technique to a regular treatment couch for tumor tracking has not been reported so far. To evaluate the performance of the tracking couch, we investigated the mechanical characteristics of the system such as system positioning resolution, repeatability, accuracy, and tracking performance. Performance of the tracking system was evaluated using dosimetric test as an endpoint. To investigate the accuracy of real-time tracking in the clinical setting, the existing clinical treatment couch was replaced with our experimental couch and the linear accelerator was used to deliver 3D conformal radiation therapy (3D-CRT) and intensity modulated radiation therapy (IMRT) treatment plans with and without tracking. The results of radiation dose distribution from these two sets of experiments were compared and presented here. Results: The mechanical accuracies were 0.12, 0.14, and 0.18 mm in X, Y, and Z directions. The repeatability of the desired motion was within ±0.2 mm. The differences of central axis dose between the 3D-CRT stationary plan and two tracking plans with different motion trajectories were 0.21% and 1.19%. The absolute dose differences of both 3D tracking plans comparing to the stationary plan were 1.09% and 1.20%. Comparing the stationary IMRT plan with the tracking IMRT plan, it was observed that the central axis dose difference was ?0.87% and the absolute difference of both IMRT plans was 0.55%. Conclusions: The experimental results revealed that the treatment couch could be successfully used for real-time tumor tracking with a high level of accuracy. It was demonstrated that 4D tumor tracking was feasible using existing couch with implementation of appropriate tracking methodology and with modifications in the control system. PMID:23127089

Buzurovic, I.; Yu, Y.; Werner-Wasik, M.; Biswas, T.; Anne, P. R.; Dicker, A. P.; Podder, T. K.

2012-01-01

421

Implementation and experimental results of 4D tumor tracking using robotic couch  

SciTech Connect

Purpose: This study presents the implementation and experimental results of a novel technique for 4D tumor tracking using a commercially available and commonly used treatment couch and evaluates the tumor tracking accuracy in clinical settings. Methods: Commercially available couch is capable of positioning the patient accurately; however, currently there is no provision for compensating physiological movement using the treatment couch in real-time. In this paper, a real-time couch tracking control technique is presented together with experimental results in tumor motion compensation in four dimensions (superior-inferior, lateral, anterior-posterior, and time). To implement real-time couch motion for tracking, a novel control system for the treatment couch was developed. The primary functional requirements for this novel technique were: (a) the treatment couch should maintain all previous/normal features for patient setup and positioning, (b) the new control system should be used as a parallel system when tumor tracking would be deployed, and (c) tracking could be performed in a single direction and/or concurrently in all three directions of the couch motion (longitudinal, lateral, and vertical). To the authors' best knowledge, the implementation of such technique to a regular treatment couch for tumor tracking has not been reported so far. To evaluate the performance of the tracking couch, we investigated the mechanical characteristics of the system such as system positioning resolution, repeatability, accuracy, and tracking performance. Performance of the tracking system was evaluated using dosimetric test as an endpoint. To investigate the accuracy of real-time tracking in the clinical setting, the existing clinical treatment couch was replaced with our experimental couch and the linear accelerator was used to deliver 3D conformal radiation therapy (3D-CRT) and intensity modulated radiation therapy (IMRT) treatment plans with and without tracking. The results of radiation dose distribution from these two sets of experiments were compared and presented here. Results: The mechanical accuracies were 0.12, 0.14, and 0.18 mm in X, Y, and Z directions. The repeatability of the desired motion was within {+-}0.2 mm. The differences of central axis dose between the 3D-CRT stationary plan and two tracking plans with different motion trajectories were 0.21% and 1.19%. The absolute dose differences of both 3D tracking plans comparing to the stationary plan were 1.09% and 1.20%. Comparing the stationary IMRT plan with the tracking IMRT plan, it was observed that the central axis dose difference was -0.87% and the absolute difference of both IMRT plans was 0.55%. Conclusions: The experimental results revealed that the treatment couch could be successfully used for real-time tumor tracking with a high level of accuracy. It was demonstrated that 4D tumor tracking was feasible using existing couch with implementation of appropriate tracking methodology and with modifications in the control system.

Buzurovic, I.; Yu, Y.; Werner-Wasik, M.; Biswas, T.; Anne, P. R.; Dicker, A. P.; Podder, T. K. [Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107 (United States); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, Ohio 44106 (United States); Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107 (United States); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, Ohio 44106 (United States)

2012-11-15

422

Martian Central Pit Craters  

NASA Technical Reports Server (NTRS)

Impact craters containing central pits are rare on the terrestrial planets but common on icy bodies. Mars is the exception among the terrestrial planets, where central pits are seen on crater floors ( floor pits ) as well as on top of central peaks ( summit pits ). Wood et al. [1] proposed that degassing of subsurface volatiles during crater formation produced central pits. Croft [2] argued instead that central pits might form during the impact of volatile-rich comets. Although central pits are seen in impact craters on icy moons such as Ganymede, they do show some significant differences from their martian counterparts: (a) only floor pits are seen on Ganymede, and (b) central pits begin to occur at crater diameters where the peak ring interior morphology begins to appear in terrestrial planet craters [3]. A study of craters containing central pits was conducted by Barlow and Bradley [4] using Viking imagery. They found that 28% of craters displaying an interior morphology on Mars contain central pits. Diameters of craters containing central pits ranged from 16 to 64 km. Barlow and Bradley noted that summit pit craters tended to be smaller than craters containing floor pits. They also noted a correlation of central pit craters with the proposed rings of large impact basins. They argued that basin ring formation fractured the martian crust and allowed subsurface volatiles to concentrate in these locations. They favored the model that degassing of the substrate during crater formation was responsible for central pit formation due to the preferential location of central pit craters along these basin rings.

Hillman, E.; Barlow, N. G.

2005-01-01

423

Satellite tracking of threatened species  

USGS Publications Warehouse

In 1990, a joint effort of two U.S. federal agencies, NASA Goddard Space Flight Center (GSFC) and the Patuxent Wildlife Research Center, began. We initially joined forces in a project that used satellite telemetry to discover the winter home of a tiny dwindling population of Siberian Cranes. Since then several projects have emerged, and a web site was created to follow some of these activities. This web site is called the Satellite Tracking of Threatened Species and its location is http://sdcd.gsfc.nasa.gov/ISTO/satellite_tracking. It describes the overall program, and links you to three subsections that describe the projects in more detail: Satellite Direct Readout, Birdtracks, and Birdworld.

Williams, M.; Lunsford, A.; Ellis, D.; Robinson, J.; Coronado, P.; Campbell, W.

1998-01-01

424

Acoustic tracking of migrating salmon.  

PubMed

Annual salmon migrations vary significantly in annual return numbers from year to year. In order to determine when a species' sustainable return size has been met, a method for counting and sizing the spawning animals is required. This project implements a probability hypothesis density tracker on data from a dual frequency identification sonar to automate the process of counting and sizing the fish crossing an insonified area. Data processing on the sonar data creates intensity images from which possible fish locations can be extracted using image processing. These locations become the input to the tracker. The probability hypothesis density tracker then solves the multiple target tracking problem and creates fish tracks from which length information is calculated using image segmentation. The algorithm is tested on data from the 2010 salmon run on the Kenai river in Alaska and compares favorably with statistical models from sub-sampling and manual measurements. PMID:25324076

Kupilik, Matthew J; Petersen, Todd

2014-10-01

425

Tracking with the mind's eye  

NASA Technical Reports Server (NTRS)

The two components of voluntary tracking eye-movements in primates, pursuit and saccades, are generally viewed as relatively independent oculomotor subsystems that move the eyes in different ways using independent visual information. Although saccades have long been known to be guided by visual processes related to perception and cognition, only recently have psychophysical and physiological studies provided compelling evidence that pursuit is also guided by such higher-order visual processes, rather than by the raw retinal stimulus. Pursuit and saccades also do not appear to be entirely independent anatomical systems, but involve overlapping neural mechanisms that might be important for coordinating these two types of eye movement during the tracking of a selected visual object. Given that the recovery of objects from real-world images is inherently ambiguous, guiding both pursuit and saccades with perception could represent an explicit strategy for ensuring that these two motor actions are driven by a single visual interpretation.

Krauzlis, R. J.; Stone, L. S.

1999-01-01

426

On-Track Unit Conversion  

NSDL National Science Digital Library

Students use three tracks marked on the floor, one in yards, one in feet and one in inches. As they start and stop a robot specific distances on a "runway," they can easily determine the equivalent measurements in other units by looking at the nearby tracks. With this visual and physical representation of the magnitude of the units of feet, yard and inches, students gain an understanding of what is meant by "unit conversion." They also gain a familiarity with different common units of measurement. They use multiplication and division to verify their physical estimated unit conversions. Students also learn about how common and helpful it is to convert from one unit to another in everyday situations and for engineering purposes. This activity helps students make the abstract concept of unit conversion real so they develop mental models of the magnitude of units instead of applying memorized conversion factors by rote.

AMPS GK-12 Program,

427

Tracking Electromagnetic Energy With SQUIDs  

NASA Technical Reports Server (NTRS)

A superconducting quantum interference device (SQUID) is a gadget used to measure extremely weak signals, specifically magnetic flux. It can detect subtle changes in energy, up to 100 billion times weaker than the electromagnetic energy required to move a compass needle. SQUIDs are used for a variety of testing procedures where extreme sensitivity is required and where the test instrument need not come into direct contact with the test subject. NASA uses SQUIDs for remote, noncontact sensing in a variety of venues, including monitoring the Earth s magnetic field and tracking brain activity of pilots. Scientists at NASA s Goddard Space Flight Center have been making extensive use of this technology, from astrophysical research, to tracking the navigational paths of bees in flight to determine if they are using internal compasses. These very sensitive measurement devices have a wide variety of uses within NASA and even more uses within the commercial realm.

2005-01-01

428

Fast tracking using edge histograms  

NASA Astrophysics Data System (ADS)

This paper proposes a new algorithm for tracking objects and objects boundaries. This algorithm was developed and applied in a system used for compositing computer generated images and real world video sequences, but can be applied in general in all tracking systems where accuracy and high processing speed are required. The algorithm is based on analysis of histograms obtained by summing along chosen axles pixels of edge segmented images. Edge segmentation is done by spatial convolution using gradient operator. The advantage of such an approach is that it can be performed in real-time using available on the market hardware convolution filters. After edge extraction and histograms computation, respective positions of maximums in edge intensity histograms, in current and previous frame, are compared and matched. Obtained this way information about displacement of histograms maximums, can be directly converted into information about changes of target boundaries positions along chosen axles.

Rokita, Przemyslaw

1997-04-01

429

Doppler tracking of planetary spacecraft  

NASA Technical Reports Server (NTRS)

This article concerns the measurement of Doppler shift on microwave links that connect planetary spacecraft with the Deep Space Network. Such measurements are made by tracking the Doppler effect with phase-locked loop receivers. A description of equipment and techniques as well as a summary of the appropriate mathematical models are given. The two-way Doppler shift is measured by transmitting a highly-stable microwave (uplink) carrier from a ground station, having the spacecraft coherently transpond this carrier, and using a phase-locked loop receiver at the ground station to track the returned (downlink) carrier. The largest sources of measurement error are usually plasma noise and thermal noise. The plasma noise, which may originate in the ionosphere or the solar corona, is discussed; and a technique to partially calibrate its effect, involving the use of two simultaneous downlink carriers that are coherently related, is described. Range measurements employing Doppler rate-aiding are also described.

Kinman, Peter W.

1992-01-01

430

Tracking the West Nile Virus  

NSDL National Science Digital Library

How can viral sequences help us establish the origin of the virus that appeared in the US in 1999? Epidemiologists have adopted bioinformatics approaches using sequence data from strains of pathogens to track the movement of bacteria and viruses from continent to continent. * explore a data set of West Nile Virus sequences from all over the world that date from the mid-20th century to the present

Erica Suchmann (University of California - San Diego; Biology)

2006-05-20

431

Single nanoparticle tracking spectroscopic microscope  

DOEpatents

A system that can maintain and track the position of a single nanoparticle in three dimensions for a prolonged period has been disclosed. The system allows for continuously imaging the particle to observe any interactions it may have. The system also enables the acquisition of real-time sequential spectroscopic information from the particle. The apparatus holds great promise in performing single molecule spectroscopy and imaging on a non-stationary target.

Yang, Haw (Moraga, CA); Cang, Hu (Berkeley, CA); Xu, Cangshan (Berkeley, CA); Wong, Chung M. (San Gabriel, CA)

2011-07-19

432

Renewing Fast-Track Legislation  

Microsoft Academic Search

From 1975 through 1993, five US presidents were granted fast-track trade negotiating authority by the Congress. This authority has enabled them to submit legislation implementing trade agreements to Congress under procedures that assure an up-or-down vote, without amendments, within a limited time period. Congress sets guidelines for the substance of negotiations and requires notification and consultation at key stages. The

I. M. Destler

433

Multitarget tracking system using texture  

NASA Astrophysics Data System (ADS)

A new method to detect and track non-rigid moving objects against a moving background is presented. In order to discriminate objects from background optical flow based segmentation methods are not appropriate for the case of non-rigid as they have non-uniform optical flow. The proposed method uses optical flow nd texture similarity to discriminate objects from the background. A well-known algorithm from neural networks, Kohonen's self-organizing maps, was adapted to measure the texture similarity.

Jeon, Jun Geun; Kim, Young Ho; Park, Goo Man; Park, Kyu Tae

1997-01-01

434

Infrared tag and track technique  

DOEpatents

A method of covertly tagging an object for later tracking includes providing a material capable of at least one of being applied to the object and being included in the object, which material includes deuterium; and performing at least one of applying the material to the object and including the material in the object in a manner in which in the appearance of the object is not changed, to the naked eye.

Partin, Judy K. (Idaho Falls, ID); Stone, Mark L. (Idaho Falls, ID); Slater, John (Albuquerque, NM); Davidson, James R. (Idaho Falls, ID)

2007-12-04

435

Deer Tracks in the City?  

ERIC Educational Resources Information Center

"Why would a deer print be in the city?" wondered a student. She had noticed the track near a grocery store that morning with her mother. She was familiar with deer and had noticed their prints on a trip to a local museum; however, she had never seen a deer in the city before this experience. As she retold the story to her classmates, her question…

Quigley, Cassie Fay; Beeman-Cadwallader, Nicole; Riggs, Morgan; Rodriguez, Antonia; Buck, Gayle

2009-01-01

436

Solar central receiver heliostat reflector assembly  

DOEpatents

A heliostat reflector assembly for a solar central receiver system comprises a light-weight, readily assemblable frame which supports a sheet of stretchable reflective material and includes mechanism for selectively applying tension to and positioning the sheet to stretch it to optical flatness. The frame is mounted on and supported by a pipe pedestal assembly that, in turn, is installed in the ground. The frame is controllably driven in a predetermined way by a light-weight drive system so as to be angularly adjustable in both elevation and azimuth to track the sun and efficiently continuously reflect the sun's rays to a focal zone, i.e. central receiver, which forms part of a solar energy utilization system, such as a solar energy fueled electrical power generation system. The frame may include a built-in system for testing for optical flatness of the reflector. The preferable geometric configuration of the reflector is octagonal; however, it may be other shapes, such as hexagonal, pentagonal or square. Several different embodiments of means for tensioning and positioning the reflector to achieve optical flatness are disclosed. The reflector assembly is based on the stretch frame concept which provides an extremely light-weight, simple, low-cost reflector assembly that may be driven for positioning and tracking by a light-weight, inexpensive drive system.

Horton, Richard H. (Schenectady, NY); Zdeb, John J. (Clifton Park, NY)

1980-01-01

437

Porous fission fragment tracks in fluorapatite  

SciTech Connect

Fission tracks caused by the spontaneous fission of {sup 238}U in minerals, as revealed by chemical etching, are extensively used to determine the age and thermal history of Earth's crust. Details of the structure and annealing of tracks at the atomic scale have remained elusive, as the original track is destroyed during chemical etching. By combining transmission electron microscopy with in situ heating, we demonstrate that fission tracks in fluorapatite are actually porous tubes, instead of having an amorphous core, as generally assumed. Direct observation shows thermally induced track fragmentation in fluoapatite, in clear contrast to the amorphous tracks in zircon, which gradually ''fade'' without fragmentation. Rayleigh instability and the thermal emission of vacancies control the annealing of porous fission tracks in fluorapatite.

Li Weixing; Ewing, Rodney C. [Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1005 (United States); Wang Lumin [Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Sun Kai [Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Lang, Maik [Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1005 (United States); Trautmann, Christina [GSI Helmholtz Centre for Heavy Ion Research, Planckstr. 1, 64291 Darmstadt (Germany)

2010-10-01

438

Segmentation of tracking sequences using dynamically updated adaptive learning.  

PubMed

The problem of segmentation of tracking sequences is of central importance in a multitude of applications. In the current paper, a different approach to the problem is discussed. Specifically, the proposed segmentation algorithm is implemented in conjunction with estimation of the dynamic parameters of moving objects represented by the tracking sequence. While the information on objects' motion allows one to transfer some valuable segmentation priors along the tracking sequence, the segmentation allows substantially reducing the complexity of motion estimation, thereby facilitating the computation. Thus, in the proposed methodology, the processes of segmentation and motion estimation work simultaneously, in a sort of "collaborative" manner. The Bayesian estimation framework is used here to perform the segmentation, while Kalman filtering is used to estimate the motion and to convey useful segmentation information along the image sequence. The proposed method is demonstrated on a number of both computed-simulated and real-life examples, and the obtained results indicate its advantages over some alternative approaches. PMID:19004712

Michailovich, Oleg; Tannenbaum, Allen

2008-12-01

439

Segmentation of Tracking Sequences Using Dynamically Updated Adaptive Learning  

PubMed Central

The problem of segmentation of tracking sequences is of central importance in a multitude of applications. In the current paper, a different approach to the problem is discussed. Specifically, the proposed segmentation algorithm is implemented in conjunction with estimation of the dynamic parameters of moving objects represented by the tracking sequence. While the information on objects’ motion allows one to transfer some valuable segmentation priors along the tracking sequence, the segmentation allows substantially reducing the complexity of motion estimation, thereby facilitating the computation. Thus, in the proposed methodology, the processes of segmentation and motion estimation work simultaneously, in a sort of “collaborative” manner. The Bayesian estimation framework is used here to perform the segmentation, while Kalman filtering is used to estimate the motion and to convey useful segmentation information along the image sequence. The proposed method is demonstrated on a number of both computed-simulated and real-life examples, and the obtained results indicate its advantages over some alternative approaches. PMID:19004712

Michailovich, Oleg; Tannenbaum, Allen

2009-01-01

440

Computer program TRACK_VISION for simulating optical appearance of etched tracks in CR-39 nuclear track detectors  

NASA Astrophysics Data System (ADS)

A computer program called TRACK_VISION for determining the optical appearances of tracks in nuclear track materials resulted from light-ion irradiation and subsequent chemical etching was described. A previously published software, TRACK_TEST, was the starting point for the present software TRACK_VISION, which contained TRACK_TEST as its subset. The programming steps were outlined. Descriptions of the program were given, including the built-in V functions for the commonly employed nuclear track material commercially known as CR-39 (polyallyldiglycol carbonate) irradiated by alpha particles. Program summaryProgram title: TRACK_VISION Catalogue identifier: AEAF_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEAF_v1_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 4084 No. of bytes in distributed program, including test data, etc.: 71 117 Distribution format: tar.gz Programming language: Fortran 90 Computer: Pentium PC Operating system: Windows 95+ RAM: 256 MB Classification: 17.5, 18 External routines: The entire code must be linked with the MSFLIB library. MSFLib is a collection of C and C++ modules which provides a general framework for processing IBM's AFP datastream. MSFLIB is specific to Visual Fortran (Digital, Compaq or Intel flavors). Nature of problem: Nuclear track detectors are commonly used for radon measurements through studying the tracks generated by the incident alpha particles. Optical microscopes are often used for this purpose but the process is relatively tedious and time consuming. Several automatic and semi-automatic systems have been developed in order to facilitate determination of track densities. In all these automatic systems, the optical appearance of the tracks is important. However, not much has been done so far to obtaining the optical appearances of etched tracks. Solution method: A computer program is prepared to study the optical characteristics of tracks in the CR-39 nuclear track detector using the ray tracing method. Based on geometrical optics, light propagation through the tracks is simulated and the brightness of all grid elements in the track wall is calculated. Additional comments: The program distribution file contains an executable which enables the program to be run on a Windows machine. The source code is also provided, but in order to build an executable the MSFLIB must be available. Running time: Running time depends mainly on the resolution (number of grid elements in the track wall) required by the user. Running time is normally less than 1 min.

Nikezic, D.; Yu, K. N.

2008-04-01

441

Tracking and activity recognition through consensus in distributed camera networks.  

PubMed

Camera networks are being deployed for various applications like security and surveillance, disaster response and environmental modeling. However, there is little automated processing of the data. Moreover, most methods for multicamera analysis are centralized schemes that require the data to be present at a central server. In many applications, this is prohibitively expensive, both technically and economically. In this paper, we investigate distributed scene analysis algorithms by leveraging upon concepts of consensus that have been studied in the context of multiagent systems, but have had little applications in video analysis. Each camera estimates certain parameters based upon its own sensed data which is then shared locally with the neighboring cameras in an iterative fashion, and a final estimate is arrived at in the network using consensus algorithms. We specifically focus on two basic problems-tracking and activity recognition. For multitarget tracking in a distributed camera network, we show how the Kalman-Consensus algorithm can be adapted to take into account the directional nature of video sensors and the network topology. For the activity recognition problem, we derive a probabilistic consensus scheme that combines the similarity scores of neighboring cameras to come up with a probability for each action at the network level. Thorough experimental results are shown on real data along with a quantitative analysis. PMID:20550994

Song, Bi; Kamal, Ahmed T; Soto, Cristian; Ding, Chong; Farrell, Jay A; Roy-Chowdhury, Amit K

2010-10-01

442

Tracking \\  

Microsoft Academic Search

Policy makers are calling for new socio-economic measures that reflect subjective well-being, to complement traditional measures of material welfare as the Gross Domestic Product (GDP). Self-reporting has been found to be reasonably accurate in measuring one's well-being and conveniently tallies with sentiment expressed on social media (e.g., those satisfied with life use more positive than negative words in their Facebook

Daniele Quercia; Jonathan Ellis; Licia Capra; Jon Crowcroft

2012-01-01

443

Central American update  

Microsoft Academic Search

The Central American Energy Resources Project is designed to help the countries of Honduras, Costa Rica, El Salvador, Guatemala, and Panama develop their geothermal resources. Auxiliary project goals are to increase economic development and employment in Central America; to provide a scientific basis for the private sector to develop natural resources; and to provide scientific training to in-country scientists, engineers,

1987-01-01

444

Central centrifugal cicatricial alopecia  

PubMed Central

Central centrifugal cicatricial alopecia is a common cause of progressive permanent apical alopecia. This unique form of alopecia includes entities previously know as “hot comb alopecia,” “follicular degeneration syndrome,” “pseudopelade” in African Americans and “central elliptical pseudopelade” in Caucasians. The etiology appears to be multifactorial and the condition occurs in all races. PMID:23440368

Blattner, Collin; Polley, Dennis C.; Ferritto, Frank; Elston, Dirk M.

2013-01-01

445

Wetlands of Central America  

Microsoft Academic Search

The wetlands of seven Central American countries – Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, and Panamá – are reviewed. The region's wetlands are classified into five systems: marine, estuarine, riverine, lacustrine, and palustrine. At a minimum, wetlands cover ˜40,000 km2 (˜8%) of the land area of Central America. These wetlands support high levels of biological diversity, especially of

Aaron M. Ellison

2004-01-01

446

High resolution 3D insider detection and tracking.  

SciTech Connect

Vulnerability analysis studies show that one of the worst threats against a facility is that of an active insider during an emergency evacuation. When a criticality or other emergency alarm occurs, employees immediately proceed along evacuation routes to designated areas. Procedures are then implemented to account for all material, classified parts, etc. The 3-Dimensional Video Motion Detection (3DVMD) technology could be used to detect and track possible insider activities during alarm situations, as just described, as well as during normal operating conditions. The 3DVMD technology uses multiple cameras to create 3-dimensional detection volumes or zones. Movement throughout detection zones is tracked and high-level information, such as the number of people and their direction of motion, is extracted. In the described alarm scenario, deviances of evacuation procedures taken by an individual could be immediately detected and relayed to a central alarm station. The insider could be tracked and any protected items removed from the area could be flagged. The 3DVMD technology could also be used to monitor such items as machines that are used to build classified parts. During an alarm, detections could be made if items were removed from the machine. Overall, the use of 3DVMD technology during emergency evacuations would help to prevent the loss of classified items and would speed recovery from emergency situations. Further security could also be added by analyzing tracked behavior (motion) as it corresponds to predicted behavior, e.g., behavior corresponding with the execution of required procedures. This information would be valuable for detecting a possible insider not only during emergency situations, but also during times of normal operation.

Nelson, Cynthia Lee

2003-09-01

447

The impact of anthropogenic climate change on North Atlantic tropical cyclone tracks  

NASA Astrophysics Data System (ADS)

We examine the change in tropical cyclone (TC) tracks that result from projected changes in the large-scale steering flow and genesis location due to increasing greenhouse gases. Tracks are first simulated using a Beta and Advection Model (BAM) and NCEP-NCAR Reanalysis winds for all TCs that formed in the North Atlantic main development region (MDR) for the period 1950-2010. Changes in genesis location and large-scale steering flow are then estimated from an ensemble mean of 17 CMIP3 models for the A1b emissions scenario. The BAM simulations are then repeated with these changes to estimate how the TC tracks would respond to increased greenhouse gases. As the climate warms, the models project a weakening of the subtropical easterlies as well as an eastward shift in genesis location. This results in a statistically significant decrease in straight-moving (westward) storm tracks of ~5.5% and an increase in recurving (open ocean) tracks of ~5.5%. These track changes decrease TC counts over the Southern Gulf of Mexico and Caribbean by 1-1.5 per decade and increase TC counts over the central Atlantic by 1-1.5 per decade. Changes in the large-scale steering flow account for a vast majority of the projected changes in TC trajectories.

Soden, B. J.; Colbert, A. J.

2013-05-01

448

Looking at the center of the targets helps multiple object tracking  

PubMed Central

The ability to move our gaze to locations of interest facilitates interactions in everyday life. Where do participants direct gaze when multiple locations are of interest simultaneously? We previously demonstrated that, when tracking several moving targets amidst distractors in a multiple object tracking (MOT) task, participants primarily looked at a central point in between the targets (H. M. Fehd & A. E. Seiffert, 2008). This strategy of center-looking is in contrast to a target-looking strategy where participants would saccade from target to target. Here we investigated what factors influence the use of center-looking as well as its effectiveness. By decreasing object speed, we determined that center-looking is not a result of avoiding costly eye movements during tracking. Decreasing object size showed that peripheral visibility is necessary for tracking, but that center-looking continues up to the limits of peripheral visibility. Further analysis revealed that participants often engaged in both target-looking and center-looking by switching gaze from the center to targets and back again. Directly comparing participants’ performance when they either did or did not include center-looking along with target-looking revealed that center-looking facilitates tracking performance. These results suggest that there is value in looking at the center that relates directly to the process of tracking multiple objects. PMID:20465338

Fehd, Hilda M.; Seiffert, Adriane E.

2014-01-01

449

Central Banking Resource Center  

NSDL National Science Digital Library

Central Banks of the World is a pointers page to central banks and central bank information for over 45 countries, as well as multilateral financial institutions, research and training establishments, and conference information. To show how little is generally known about the history of central banking in the United States, this site includes an email message sent to the webmaster of the First Bank of the United States, promoting a certain software company's web interactivity applications. Of course, since the First Bank of the United States was closed in 1811, its web site is primarily historical. The Central Banks site lists over 30 Internet directories and pointers pages that list the First Bank of the United States as a functioning financial institution. To help remedy this situation, the site includes a pointer to a brief history of banking in the US.

450

Multibeam optical apparatus and method for tracking control for an optical disk having a set of tracks  

NASA Technical Reports Server (NTRS)

A multitrack optical disk has two or more circular or spiral tracks, which are recorded or played back in simultaneous sets for high data rates. Tracking is accomplished by sets of first and second tracking pads, which lie partially on and partially off the track paths. The amount of inter-track space required to accommodate the track pads is reduced by placing the overlap of the tracking pads in the same inter-track space, and by tracking any additional simultaneous tracks in excess of two by mechanical coupling with the first two.

Reno, Charles W. (Inventor)

1996-01-01

451

Sensor-based animal tracking  

NASA Astrophysics Data System (ADS)

The advent of Global Positioning System (GPS) technologies has provided wildlife researchers with new insights into the movement and habitat utilization patterns of wildlife species by being able to provide vast quantities of detailed location data. However, current wildlife tracking techniques have numerous limitations, as GPS locations can be biased to an unknown extent because animals move through habitats that are often denied GPS signals. This can result in some habitat types being under sampled or not sampled at all. Additionally, researchers using GPS tracking systems cannot understand what behaviour an animal is exhibiting at each GPS position without either relying on extensive field data or statistical techniques that may infer behaviour. Overall these issues, and others, limit the knowledge that can be derived from the data currently being collected by GPS collars alone. To address these limitations, a dead reckoning solution (called the NavAid) has been developed to augment GPS tracking collars, which enables both the acquisition of continuous movement trajectories for animals under study, and the collection of digital images on a user-defined schedule along travel routes. Analysis of an animal's velocity allows one to identify different types of movement behaviours that can be associated with foraging, searching for food, and locomotion between patches. In addition, the ability to capture continuous paths allows researchers to identify habitat that is important to a species, and habitat that is not---something that is not possible when relying solely on GPS. This new system weighs approximately 220 g and can be deployed on most conventional collar systems for a wide range of species. This thesis presents the research and development of this new system over the past four years, along with preliminary findings from field work carried out on grizzly bears (Ursus arctos) in the foothills of the Canadian Rocky Mountains. Analysis of tracking data suggests that animals select different types of habitat for different purposes, that foraging occurs at movement rates of less than 52m/minute, searching for food between movement rates of 52 m/minute and 223 m/minute and locomotion, or active walking between foraging sites at movement rates greater than 223 m/minute.

Hunter, Andrew

452

Multiple lesion track structure model  

NASA Technical Reports Server (NTRS)

A multilesion cell kinetic model is derived, and radiation kinetic coefficients are related to the Katz track structure model. The repair-related coefficients are determined from the delayed plating experiments of Yang et al. for the C3H10T1/2 cell system. The model agrees well with the x ray and heavy ion experiments of Yang et al. for the immediate plating, delaying plating, and fractionated exposure protocols employed by Yang. A study is made of the effects of target fragments in energetic proton exposures and of the repair-deficient target-fragment-induced lesions.

Wilson, John W.; Cucinotta, Francis A.; Shinn, Judy L.

1992-01-01

453

Particle displacement tracking for PIV  

NASA Technical Reports Server (NTRS)

A new Particle Imaging Velocimetry (PIV) data acquisition and analysis system, which is an order of magnitude faster than any previously proposed system has been constructed and tested. The new Particle Displacement Tracing (PDT) system is an all electronic technique employing a video camera and a large memory buffer frame-grabber board. Using a simple encoding scheme, a time sequence of single exposure images are time coded into a single image and then processed to track particle displacements and determine velocity vectors. Application of the PDT technique to a counter-rotating vortex flow produced over 1100 velocity vectors in 110 seconds when processed on an 80386 PC.

Wernet, Mark P.

1990-01-01

454

Robotic Target-Tracking Subsystem  

NASA Technical Reports Server (NTRS)

Position and orientation of target measured in six degrees of freedom. Robotic vision subsystem measures relative position and orientation of specially designed target. Uses standard image-processing algorithms implemented directly in circuitry instead of computer programs. This feature makes it possible to extract complete sets of target-tracking data from successive image frames at rate of 30 frames per second. Five bright circles of target positioned in such way that video images of them processed into data on position and orientation of target relative to camera. Subsystem useful in industrial assembly operation requiring automatic joining of parts initially oriented and moving randomly.

Shawaga, Lawrence M.

1989-01-01

455

NASA tracking ship navigation systems  

NASA Technical Reports Server (NTRS)

The ship position and attitude measurement system that was installed aboard the tracking ship Vanguard is described. An overview of the entire system is given along with a description of how precise time and frequency is utilized. The instrumentation is broken down into its basic components. Particular emphasis is given to the inertial navigation system. Each navigation system used, a mariner star tracker, navigation satellite system, Loran C and OMEGA in conjunction with the inertial system is described. The accuracy of each system is compared along with their limitations.

Mckenna, J. J.

1976-01-01

456

Tracking system for solar collectors  

DOEpatents

A tracking system is provided for pivotally mounted spaced-apart solar collectors. A pair of cables is connected to spaced-apart portions of each collector, and a driver displaces the cables, thereby causing the collectors to pivot about their mounting, so as to assume the desired orientation. The collectors may be of the cylindrical type as well as the flat-plate type. Rigid spar-like linkages may be substituted for the cables. Releasable attachments of the cables to the collectors is also described, as is a fine tuning mechanism for precisely aligning each individual collector.

Butler, Barry L. (Golden, CO)

1984-01-01

457

Tracking system for solar collectors  

DOEpatents

A tracking system is provided for pivotally mounted spaced-apart solar collectors. A pair of cables is connected to spaced-apart portions of each collector, and a driver displaces the cables, thereby causing the collectors to pivot about their mounting, so as to assume the desired orientation. The collectors may be of the cylindrical type as well as the flat-plate type. Rigid spar-like linkages may be substituted for the cables. Releasable attachments of the cables to the collectors is also described, as is a fine tuning mechanism for precisely aligning each individual collector.

Butler, B.

1980-10-01

458

Effect of cross-correlation on track-to-track fusion  

NASA Astrophysics Data System (ADS)

Since the advent of target tracking systems employing a diverse mixture of sensors, there has been increasing recognition by air defense system planners and other military system analysts of the need to integrate these tracks so that a clear air picture can be obtained in a command center. A popular methodology to achieve this goal is to perform track-to-track fusion, which performs track-to-track association as well as kinematic state vector fusion. This paper seeks to answer analytically the extent of improvement achievable by means of kinetic state vector fusion when the tracks are obtained from dissimilar sensors (e.g., Radar/ESM/IRST/IFF). It is well known that evaluation of the performance of state vector fusion algorithms at steady state must take into account the effects of cross-correlation between eligible tracks introduced by the input noise which, unfortunately, is often neglected because of added computational complexity. In this paper, an expression for the steady-state cross-covariance matrix for a 2D state vector track-to-track fusion is obtained. This matrix is shown to be a function of the parameters of the Kalman filters associated with the candidate tracks being fused. Conditions for positive definiteness of the cross-covariance matrix have been derived and the effect of positive definiteness on performance of track-to-track fusion is also discussed.

Saha, Rajat K.

1994-07-01

459

North Central Texas Council of Governments North Central Texas  

E-print Network

North Central Texas Council of Governments North Central Texas Thinking Ahead Donna Coggeshall North Central Texas Council of Governments #12;North Central Texas Council of Governments Thinking Ahead are for the 12-county MPA #12;North Central Texas Council of Governments Thinking Ahead Development Form #12

Texas at Arlington, University of

460

Olivines: revelation of tracks of charged particles.  

PubMed

A one-step, three-component aqueous etchant was developed for revealing the tracks of charged particles in olivine. The etchant reveals tracks of small cone angle, which are equally well developed in all the crystallographic directions. The scope of fossil cosmic-ray track studies in extraterrestrial samples has thus been increased, because olivine is often an abundant constituent and because it has a higher threshold ionization for track registration and has lower uranium, thorium, and trace element concentrations as compared with pyroxenes and feldspars. The etchant does not attack any of the principal rock-forming minerals in normal etching time, which allows a nondestructive study of fossil tracks in thin-section mounts. The study of fossil cosmic-ray tracks in olivine is particularly valuable for investigations of very, very heavy cosmic-ray nuclei and for highly irradiated samples such as those found in the lunar regolith. PMID:17778062

Krishnaswami, S; Lal, D; Prabhu, N; Tamhane, A S

1971-10-15

461

Two-axis tracking solar collector mechanism  

DOEpatents

This invention is a novel solar tracking mechanism incorporating a number of practical features that give it superior environmental resilience and exceptional tracking accuracy. The mechanism comprises a lightweight space-frame assembly supporting an array of point-focus Fresnel lenses in a two-axis tracking structure. The system is enclosed under a glass cover which isolates it from environmental exposure and enhances tracking accuracy by eliminating wind loading. Tracking accuracy is also enhanced by the system's broad-based tracking support. The system's primary intended application would be to focus highly concentrated sunlight into optical fibers for transmission to core building illumination zones, and the system may also have potential for photovoltaic or photothermal solar energy conversion. 16 figs.

Johnson, K.C.

1992-12-08

462

Two-axis tracking solar collector mechanism  

DOEpatents

This invention is a novel solar tracking mechanism incorporating a number of practical features that give it superior environmental resilience and exceptional tracking accuracy. The mechanism comprises a lightweight space-frame assembly supporting an array of point-focus Fresnel lenses in a two-axis tracking structure. The system is enclosed under a glass cover which isolates it from environmental exposure and enhances tracking accuracy by eliminating wind loading. Tracking accuracy is also enhanced by the system's broad-based tracking support. The system's primary intended application would be to focus highly concentrated sunlight into optical fibers for transmission to core building illumination zones, and the system may also have potential for photovoltaic or photothermal solar energy conversion.

Johnson, Kenneth C. (201 W. California Ave. #705, Sunnyvale, CA 94086)

1992-01-01

463

Two-axis tracking solar collector mechanism  

DOEpatents

This invention is a novel solar tracking mechanism incorporating a number of practical features that give it superior environmental resilience and exceptional tracking accuracy. The mechanism comprises a lightweight space-frame assembly supporting an array of point-focus Fresnel lenses in a two-axis tracking structure. The system is enclosed under a glass cover which isolates it from environmental exposure and enhances tracking accuracy by eliminating wind loading. Tracking accuracy is also enhanced by the system's broad-based tracking support. The system's primary intended application would be to focus highly concentrated sunlight into optical fibers for transmission to core building illumination zones, and the system may also have potential for photovoltaic or photothermal solar energy conversion.

Johnson, Kenneth C. (201 W. California Ave., #401, Sunnyvale, CA 94086)

1990-01-01

464

Building the RHIC tracking lattice model  

SciTech Connect

In this note we outline the procedure to build a realistic lattice model for the RHIC beam-beam tracking simulation. We will install multipole field errors in the arc main dipoles, arc main quadrupols and interaction region magnets (DX, D0, and triplets) and introduce a residual closed orbit, tune ripples, and physical apertures in the tracking lattice model. Nonlinearities such as local IR multipoles, second order chromaticies and third order resonance driving terms are also corrected before tracking.

Luo, Y.; Fischer, W.; Tepikian, S.

2010-01-27

465

Improving Multiple People Tracking Using Temporal Consistency  

Microsoft Academic Search

This work presents a real-time multi-person or multi-object tracking algorithm that uses multiple hypothesis reasoning in time to enforce multi-person match constraints. The al- gorithm is intended to augment, not replace, existing multi- person tracking methods. We demonstrate how tracking sys- tems that use inter-frame feature matching can be improved by enforcing contextual matching constraints throughout a 1-5 second temporal

Rania Y. Khalaf; Stephen S. Intille

466

Parameter Sensitivity Visualization for DTI Fiber Tracking  

Microsoft Academic Search

Abstract—Fiber tracking of Diffusion Tensor Imaging (DTI) data offers a unique,insight into the three-dimensional organisation,of white matter structures in the living brain. However, fiber tracking algorithms require a number of user-defined input parameters that strongly affect the output results. Usually the fiber tracking parameters,are set once and are then re-used for several patient datasets. However, the stability of the chosen

Ralph Brecheisen; Anna Vilanova; Bram Platel; Bart M. Ter Haar Romeny

2009-01-01

467

Advanced tracking systems design and analysis  

NASA Technical Reports Server (NTRS)

The results of an assessment of several types of high-accuracy tracking systems proposed to track the spacecraft in the National Aeronautics and Space Administration (NASA) Advanced Tracking and Data Relay Satellite System (ATDRSS) are summarized. Tracking systems based on the use of interferometry and ranging are investigated. For each system, the top-level system design and operations concept are provided. A comparative system assessment is presented in terms of orbit determination performance, ATDRSS impacts, life-cycle cost, and technological risk.

Potash, R.; Floyd, L.; Jacobsen, A.; Cunningham, K.; Kapoor, A.; Kwadrat, C.; Radel, J.; Mccarthy, J.

1989-01-01

468

Random grid fern for visual tracking  

NASA Astrophysics Data System (ADS)

Visual tracking is one of the significant research directions in computer vision. Although standard random ferns tracking method obtains a good performance for the random spatial arrangement of binary tests, the effect of the locality of image on ferns description ability are ignored and prevent them to describe the object more accurately and robustly. This paper proposes a novel spatial arrangement of binary tests to divide the bounding box into grids in order to keep more details of the image for visual tracking. Experimental results show that this method can improve tracking accuracy effectively.

Cheng, Fei; Liu, Kai; Zhang, Jin; Li, YunSong

2014-05-01

469

Object detection and tracking under planar constraints  

NASA Astrophysics Data System (ADS)

Automatic object detection and tracking has been widely applied in the video surveillance systems for homeland security and data fusion in the remote sensing and airborne imagery. The typical applications include human motion analysis, vehicle detection, and architectural building detection. Here we conduct object detection and tracking under planar constraints for interesting objects. Planar surface abounds in man-made environment. It provides much useful information for image understanding and then can be adopted to improve the performance of object detection and tracking. The experiments on real data show that object detection and tracking could be successfully implemented by incorporating planar information of interesting objects.

He, Qiang; Chu, Chee-Hung Henry; Camargo, Aldo

2013-05-01

470

Automated tracking of yeast cell lineages  

NASA Astrophysics Data System (ADS)

We propose a cell progeny tracking method that sequentially employs image alignment, chamber cropping, cell segmentation, per-cell feature measurement, and progeny (lineage) tracking modules. It enables biologists to keep track of phenotypic patterns not only over time but also over multiple generations. Yeast cells encapsulated in chambers of a polydimethylsiloxane (PDMS) microfluidic device were imaged over time to monitor changes in fluorescence levels. We implemented our method in an automated cell image analysis tool, CellProfiler, and performed initial testing. Once refined and validated, the approach could be adapted/used in other cell segmentation and progeny tracking experiments.

Kim, Kyungnam; Rowat, Amy C.; Carpenter, Anne E.

2010-08-01

471

Modular Track System For Positioning Mobile Robots  

NASA Technical Reports Server (NTRS)

Conceptual system for positioning mobile robotic manipulators on large main structure includes modular tracks and ancillary structures assembled easily along with main structure. System, called "tracked robotic location system" (TROLS), originally intended for application to platforms in outer space, but TROLS concept might also prove useful on Earth; for example, to position robots in factories and warehouses. T-cross-section rail keeps mobile robot on track. Bar codes mark locations along track. Each robot equipped with bar-code-recognizing circuitry so it quickly finds way to assigned location.

Miller, Jeff

1995-01-01

472

A comparative evaluation of visual tracking systems  

NASA Astrophysics Data System (ADS)

This paper provides comparative evaluations of two visual object tracking algorithms - the Shape Estimating Filter (SEF), a homogeneous extension of the basic correlation tracker; and its multi-object counterpart the Competitive Attentional Correlation Tracker using Shape (CACTuS). The CACTuS is evaluated comparatively against its predecessor to show direct improvement in tracking effectiveness. Our approach will involve an evaluation framework consisting of a range of modern, peer reviewed tracking performance metrics, allowing for a detailed multi-faceted analysis of tracking results. As such we provide an overview of current performance evaluation methods, including techniques for multi-object tracker evaluation.

Gatt, Adam; Wong, Sebastien; Kearney, David; Watts, Edward

2009-05-01

473

Eigenspace-based tracking for feature points  

NASA Astrophysics Data System (ADS)

Feature point tracking deals with image streams that change over time. Most existing feature point tracking algorithms only consider two adjacent frames at a time, and forget the feature information of previous frames. In this paper, we present a new eigenspace-based tracking method that learns an eigenspace representation of training features online, and finds the target feature point with Gauss-Newton style search method. A coarse-to-fine processing strategy is introduced to handle large affine transformations. Several simulations and experiments on real images indicate the effectiveness of the proposed feature tracking algorithm under the conditions of large pose changes and temporary occlusions.

Peng, Chen; Chen, Qian; Qian, Wei-xian

2014-05-01

474

Speckle tracking echocardiography?- quo vadis?  

PubMed

Although echocardiography is a noninvasive means of visualizing the heart, quantitative and reproducible assessment of myocardial motion remains to be established. Tissue Doppler imaging (TDI) emerged in the early 1990 s as a tool to measure tissue motion velocity. For the purpose of analyzing regional myocardial motion quantitatively, the myocardial velocity gradient (MVG) across the myocardial wall was first introduced by using TDI. MVG is mathematically equal to strain rate. Initially, strain was derived as the time integral of the TDI-derived strain rate, but it revealed substantial errors of measurement, which basically arose from the confusion of Eulerian coordinates with Lagrangian coordinates in fluid dynamics. Speckle tracking echocardiography (STE) has subsequently emerged as a technique that analyzes motion by tracking "speckles" on echocardiograms based on Lagrangian coordinates. Although STE-derived strain is a robust parameter of myocardial deformation, the stress-strain relationship has often been overlooked in the assessment of myocardial function. We should consider (1) blood pressure, (2) left ventricular size, and (3) left ventricular wall thickness, as well as strain. Practical means of normalizing strain by stress should be pursued in the quantitative assessment of myocardial function. Consideration of stress-strain relationships is mandatory when interpreting STE-derived strain. (Circ J 2015; 79: 735-741). PMID:25766514

Uematsu, Masaaki

2015-03-25

475

49 CFR 218.27 - Workers on track other than main track.  

Code of Federal Regulations, 2010 CFR

...TRANSPORTATION RAILROAD OPERATING PRACTICES Blue Signal Protection of Workers § 218...track other than main track— (a) A blue signal must be displayed at or near each... (d) If rolling equipment requiring blue signal protection as provided...

2010-10-01

476

Superior Augmented Reality Registration by Integrating Landmark Tracking and Magnetic Tracking  

E-print Network

Superior Augmented Reality Registration by Integrating Landmark Tracking and Magnetic Tracking Accurate registration between real and virtual objects is crucial for augmented reality applications and Techniques]: Interaction techniques. Additional Keywords and Phrases: Augmented reality, stereo video see

State, Andrei

477

Launch vehicle tracking enhancement through Global Positioning System Metric Tracking  

NASA Astrophysics Data System (ADS)

United Launch Alliance (ULA) initiated operational flights of both the Atlas V and Delta IV launch vehicle families in 2002. The Atlas V and Delta IV launch vehicles were developed jointly with the US Air Force (USAF) as part of the Evolved Expendable Launch Vehicle (EELV) program. Both Launch Vehicle (LV) families have provided 100% mission success since their respective inaugural launches and demonstrated launch capability from both Vandenberg Air Force Base (VAFB) on the Western Test Range and Cape Canaveral Air Force Station (CCAFS) on the Eastern Test Range. However, the current EELV fleet communications, tracking, & control architecture & technology, which date back to the origins of the space launch business, require support by a large and high cost ground footprint. The USAF has embarked on an initiative known as Future Flight Safety System (FFSS) that will significantly reduce Test Range Operations and Maintenance (O& M) cost by closing facilities and decommissioning ground assets. In support of the FFSS, a Global Positioning System Metric Tracking (GPS MT) System based on the Global Positioning System (GPS) satellite constellation has been developed for EELV which will allow both Ranges to divest some of their radar assets. The Air Force, ULA and Space Vector have flown the first 2 Atlas Certification vehicles demonstrating the successful operation of the GPS MT System. The first Atlas V certification flight was completed in February 2012 from CCAFS, the second Atlas V certification flight from VAFB was completed in September 2012 and the third certification flight on a Delta IV was completed October 2012 from CCAFS. The GPS MT System will provide precise LV position, velocity and timing information that can replace ground radar tracking resource functionality. The GPS MT system will provide an independent position/velocity S-Band telemetry downlink to support the current man-in-the-loop ground-based commanded destruct of an anomalous flight- The system utilizes a 50 channel digital receiver capable of navigating in high dynamic environments and high altitudes fed by antennas mounted diametrically opposed on the second stage airframe skin. To enhance cost effectiveness, the GPS MT System design implemented existing commercial parts and common environmental and interface requirements for both EELVs. The EELV GPS MT System design is complete, successfully qualified and has demonstrated that the system performs as simulated. This paper summarizes the current development status, system cost comparison, and performance capabilities of the EELV GPS MT System.

Moore, T. C.; Li, Hanchu; Gray, T.; Doran, A.

478

MoneyCentral  

NSDL National Science Digital Library

MoneyCentral is a new personal finance site by Microsoft now in public beta test. An expanded and more user-friendly form of MSN's Money Insider (discussed in the October 23, 1997 Scout Report for Business & Economics), MoneyCentral encompasses a wide variety of guides and tools on everything from Family Financing to Real Estate, Taxes and Investing. Visitors may view the full range of MoneyCentral topics from a clearly-arranged and clickable site map among other helpful links.

479

Superior augmented reality registration by integrating landmark tracking and magnetic tracking  

Microsoft Academic Search

Accurate registration between real and virtual objects is crucial for augmented reality applications. Existing tracking methods are individually inadequate: magnetic trackers are inaccurate, mechanical trackers are cumbersome, and vision-based trackers are computationally problematic. We present a hybrid tracking method that combines the accuracy of vision-based tracking with the robustness of magnetic tracking without compromising real-time performance or usability. We demonstrate

Andrei State; Gentaro Hirota; David T. Chen; William F. Garrett; Mark A. Livingston

1996-01-01

480

76 FR 74585 - Railroad Workplace Safety; Adjacent-Track On-Track Safety for Roadway Workers  

Federal Register 2010, 2011, 2012, 2013, 2014

...whose track center is spaced 19 feet or less from the track center...performed within the areas 25 feet in front of and 25 feet behind any on-track, self-propelled...with a present value (PV) (7 percent) of $151.4 million, and...

2011-11-30

481

NationalEnvironmentalPublicHealthTrackingProgram KeepingTrack,PromotingHealthMISSOURI  

E-print Network

to prevent disease. WhyTrackingMatterstoMissouri Deteriorating lead-based paint is the most common source to lead based paint was a concern. Missouri's Tracking Program partnered with St. Louis City officials and Prevention (CDC) is leading the initiative to build the National Environmental Public Health Tracking Network

482

Eye-Tracking: Characteristics and Methods Eye-Tracking: Research Areas and Applications  

E-print Network

1 Part 1 Eye-Tracking: Characteristics and Methods Part 2 Eye-Tracking: Research Areas. & Bowlin, G. (Eds.) [ PREPRINT, FEB 2004. PLEASE DO NOT QUOTE ] #12;2 Eye-Tracking: Characteristics and Methods Introduction Eye movements are arguably the most frequent of all human movements (Bridgeman, 1992

Richardson, Daniel C.

483

Integrated position and motion tracking method for online multi-vehicle tracking-by-detection  

NASA Astrophysics Data System (ADS)

In this paper, we present a multi-vehicle tracking method that uses integrated position and motion tracking methods to minimize missing and false detection. No existing state-of-the-art vehicle detection method can detect all the vehicles on the road and remove all false positive alarms. Therefore, a robust tracking-by-detection algorithm is necessary to minimize the number of false positive and false negative alarms. In multi-vehicle tracking, there are three types of errors such as false negative alarms, false positive alarms, and track identity switches. False negative and false positive alarms are caused by an imperfect detection algorithm, while track identity switches are caused by measurement-to-track pair confusion. Our tracking-by-detection method minimizes these errors while processing in real-time for online application. Sparse false positive alarms are reduced by a track initialization procedure. Motion tracking with selected features can minimize false negative alarms. A data association algorithm with complementary global and local distance prevents tracks from connecting measurements incorrectly. The proposed method was evaluated and verified in challenging, real road environments. The experimental results demonstrate that our multi-vehicle tracking method remarkably reduces false positive and false negative alarms and performs better than previous methods.

Lim, Young-Chul; Lee, Minho; Lee, Chung-Hee; Kwon, Soon; Lee, Jong-Hun

2011-07-01

484

CDC's National Environmental Public Health Tracking Network SOUTH CAROLINA Keeping Track, Promoting Health  

E-print Network

CS225774_C CDC's National Environmental Public Health Tracking Network SOUTH CAROLINA Keeping Track their networks every day to improve the health of their communities. Why Tracking Matters in South Carolina In August of 2009, South Carolina became one of six additional states awarded CDC funding to build a local