WorldWideScience

Sample records for argos dss feature

  1. Dose modelling for 'dirty bomb' scenarios - an ARGOS DSS feature under development

    DEFF Research Database (Denmark)

    Andersson, Kasper Grann; Mikkelsen, Torben; Astrup, Poul;

    The world of today is not only facing the risk of accidents (e.g., in nuclear facilities, as considered in the EURANOS project). Also other types of emergencies, notably involving radiological terrorism, pose a threat. Acts of terror would be most likely to take place in a city, where the greatest...

  2. ARGoS: a modular, multi-engine simulator for heterogeneous swarm robotics

    OpenAIRE

    Pinciroli C; Trianni V; O'Grady R; Pini G; Brutschy A; Brambilla M; Mathews N; Ferrante E; Di Caro G; Ducatelle F

    2011-01-01

    We present ARGoS, a novel open source multi-robot simulator. The main design focus of ARGoS is the real-time simulation of large heterogeneous swarms of robots. Existing robot simulators obtain scalability by imposing limitations on their extensibility and on the accuracy of the robot models. By contrast, in ARGoS we pursue a deeply modular approach that allows the user both to easily add custom features and to allocate computational resources where needed by the experiment. A unique feature ...

  3. Investigation of selected surface integrity features of duplex stainless steel (DSS) after turning

    OpenAIRE

    G. Krolczyk; Nieslony, P.; S. Legutko; S. Hloch; I. Samardzic

    2015-01-01

    The article presents surface roughness profiles and Abbott - Firestone curves with vertical and amplitude parameters of surface roughness after turning by means of a coated sintered carbide wedge with a coating with ceramic intermediate layer. The investigation comprised the influence of cutting speed on the selected features of surface integrity in dry machining. The material under investigation was. duplex stainless steel with two-phase ferritic-austenitic structure. The tests have been per...

  4. Investigation of selected surface integrity features of duplex stainless steel (DSS after turning

    Directory of Open Access Journals (Sweden)

    G. Krolczyk

    2015-01-01

    Full Text Available The article presents surface roughness profiles and Abbott - Firestone curves with vertical and amplitude parameters of surface roughness after turning by means of a coated sintered carbide wedge with a coating with ceramic intermediate layer. The investigation comprised the influence of cutting speed on the selected features of surface integrity in dry machining. The material under investigation was duplex stainless steel with two-phase ferritic-austenitic structure. The tests have been performed under production conditions during machining of parts for electric motors and deep-well pumps. The obtained results allow to draw conclusions about the characteristics of surface properties of the machined parts.

  5. ARGOS - a decision support system for nuclear emergencies

    International Nuclear Information System (INIS)

    Full text: The Danish developed ARGOS system is in operation in Denmark, Canada, Ireland, Norway and 4 Baltic Sea states. ARGOS is a dynamic system that is modified regularly in order to cope with new requirements. The present version of the system includes features such as: presentations of monitoring data including high-resolution data from airborne gamma surveys and use of these data in food dose modelling; presentation of meteorological data including precipitation; atmospheric dispersion calculations; food dose modelling based on atmospheric dispersion and/or monitoring; web features such as animations and exchange of source terms. Atmospheric dispersion in ARGOS is divided in two parts, a short and mesoscale dispersion model LSMC /RIMPUFF and a long-range models: DERMA (Danish) and MLDPO (Canada). The short range model -LSMC comprises a meteorological pre-processor, which calculates time and height dependent fields of meteorological parameters (deposition, stability, wind etc.) based on the data provided by the DMI-HIRLAM model or by meteorological masts. Based on these data calculations of gamma doses and concentrations are made by the puff model RIMPUFF. Input data for the Food Dose Module, FDM, are also created. RIMPUFF may be used up to distance of a few hundred kilometres from the source. RIMPUFF has been validated with success against several experiments. The long range models are executed at the National Meteorological institutes. The inputs to the long-range models are automatically uploaded from ARGOS to the Meteorological centres where the meteorological data is taken from the operational weather prediction models (NWP). At the Danish Meteorological Institute (DMI) up to 4 calculations are executed on different versions of the NWP model, with various geographical coverage and resolution. When the calculations are finalized, the monitor function in ARGOS will prompt the users for download of the results. The most recent version of ARGOS includes a

  6. Argo Navis

    Science.gov (United States)

    Murdin, P.

    2000-11-01

    (the Ship) a large southern constellation representing the ship Argo of Jason and the Argonauts in Greek mythology whose brightest stars were cataloged by Ptolemy (c. AD 100-175) in the Almagest. It was divided up by the French astronomer Nicolas L de Lacaille (1713-62), who charted the southern sky in 1751-2, into the constellations Carina (the Keel), Vela (the Sails), Puppis (the Poop or Stern)...

  7. NKS NordDSS - report from workshop on the use of Decision Support Systems

    Energy Technology Data Exchange (ETDEWEB)

    Dyve, J.E. (Norwegian Radiation Protection Authority (Norway))

    2010-03-15

    Nuclear preparedness and response authorities in the Nordic countries are using decision support systems (DSS) as part of their operational capability. A DSS compile, display and analyse data that makes up the current and future radiological state of an emergency. ARGOS and RODOS are the two most common systems in use in the Nordic region. The aim of of the NordDSS workshop was to gather Nordic and international experts on DSS, and share knowledge and experience. The workshop brought together 22 experts for two days in Copenhagen. (author)

  8. NKS NordDSS - report from workshop on the use of Decision Support Systems

    International Nuclear Information System (INIS)

    Nuclear preparedness and response authorities in the Nordic countries are using decision support systems (DSS) as part of their operational capability. A DSS compile, display and analyse data that makes up the current and future radiological state of an emergency. ARGOS and RODOS are the two most common systems in use in the Nordic region. The aim of of the NordDSS workshop was to gather Nordic and international experts on DSS, and share knowledge and experience. The workshop brought together 22 experts for two days in Copenhagen. (author)

  9. Animal Tracking ARGOS vs GPS

    Science.gov (United States)

    Robinson, P. W.; Costa, D.; Arnould, J.; Weise, M.; Kuhn, C.; Simmons, S. E.; Villegas, S.; Tremblay, Y.

    2006-12-01

    ARGOS satellite tracking technology has enabled a tremendous increase in our understanding of the movement patterns of a diverse array of marine vertebrates from Sharks to marine mammals. Our current understanding has moved from simple descriptions of large scale migratory patterns to much more sophisticated comparisons of animal movements and behavior relative to oceanic features. Further, animals are increasingly used to carry sensors that can acquire water column temperature and salinity profiles. However, a major limitation of this work is the spatial precision of ARGOS locations. ARGOS provides 7 location qualities that range from 3,2,1,0,A,B,Z and correspond to locations with a precision of 150m to tens of kilometers. Until recently, GPS technology could not be effectively used with marine mammals because they did not spend sufficient time at the surface to allow complete acquisition of satellite information. The recent development of Fastloc technology has allowed the development of GPS tags that can be deployed on marine mammals. Here we compare the location quality and frequency derived from standard ARGOS PTTs to Fastloc GPS locations acquired from 11 northern elephant seals, 5 California and 5 Galapagos sea lions and 1 Cape and 3 Australian fur seals. Our results indicate that GPS technology will greatly enhance our ability to understand the movement patterns of marine vertebrates and the in-situ oceanographic data they collect.

  10. Customised DSS and decision conferences

    DEFF Research Database (Denmark)

    Barfod, Michael Bruhn; Leleur, Steen

    2009-01-01

    This paper presents and exemplifies a combination of techniques for deriving and modelling decision-maker and/or stakeholder preferences using a decision conference process. The applied techniques are used for the development of customised decision support systems (C-DSS) which can be used for...... appraisals of large transport infrastructure projects. The paper exemplifies how the process at a decision conference can be effectively supported by a DSS customised using appropriate techniques for the specific task in hand. In this respect a conventional cost-benefit analysis (CBA) is combined with a...... multi-criteria decision analysis (MCDA) featuring the REMBRANDT and the swing weights techniques. The approach is presented based on a case study, which concerns the interaction between stakeholders and decision-makers at a decision conference which was set up for the appraisal of proposals for the...

  11. Radar RFI at Goldstone DSS 12 and DSS 16

    Science.gov (United States)

    Slobin, S. D.; Peng, T. K.

    1990-01-01

    Radio frequency interference (RFI) from the DSS 14 Goldstone Solar System Radar (GSSR) was investigated at DSS 12 and DSS 16 with the goal of assisting in the choice of the location of future DSN antennas. Total power measurements at both locations were made at the S-band carrier frequency of 2320 MHz. X-band measurements at the carrier frequency of 8495 MHz could not be made. Exciter-chain output spectrum and klystron output spectrum measurements were made at S- and X-bands using a probable worst-case modulation of the radar signal (short pseudorandom number (PN) code length and short pulse length). Based on these measurements, it is estimated that RFI levels in the DSN receiving bands at both sites (above 10-deg elevation) would be below -192 dBm for a 1-Hz bandwidth

  12. Argos: an Automaton-Based Synchronous Language

    OpenAIRE

    Maraninchi, Florence; Rémond, Yann

    2001-01-01

    International audience Argos belongs to the family of synchronous languages, designed for programming reactive systems (Lustre, Esterel, Signal, ...). Argos is a set of operators that allow to combine Boolean Mealy machines, in a compositional way. It takes its origin in Statecharts, but with the Argos operators, one can build only a subset of Statecharts, roughly those that do not make use of multi-level arrows. We explain the main motivations for the definition of Argos, and the main dif...

  13. Status of the ARGOS project

    Science.gov (United States)

    Rabien, Sebastian; Barl, Lothar; Beckmann, Udo; Bonaglia, Marco; Borelli, José Luis; Brynnel, Joar; Buschkamp, Peter; Busoni, Lorenzo; Christou, Julian; Connot, Claus; Davies, Richard; Deysenroth, Matthias; Esposito, Simone; Gässler, Wolfgang; Gemperlein, Hans; Hart, Michael; Kulas, Martin; Lefebvre, Michael; Lehmitz, Michael; Mazzoni, Tommaso; Nussbaum, Edmund; Orban de Xivry, Gilles; Peter, Diethard; Quirrenbach, Andreas; Raab, Walfried; Rahmer, Gustavo; Storm, Jesper; Ziegleder, Julian

    2014-07-01

    ARGOS is the Laser Guide Star and Wavefront sensing facility for the Large Binocular Telescope. With first laser light on sky in 2013, the system is currently undergoing commissioning at the telescope. We present the overall status and design, as well as first results on sky. Aiming for a wide field ground layer correction, ARGOS is designed as a multi- Rayleigh beacon adaptive optics system. A total of six powerful pulsed lasers are creating the laser guide stars in constellations above each of the LBTs primary mirrors. With a range gated detection in the wavefront sensors, and the adaptive correction by the deformable secondary's, we expect ARGOS to enhance the image quality over a large range of seeing conditions. With the two wide field imaging and spectroscopic instruments LUCI1 and LUCI2 as receivers, a wide range of scientific programs will benefit from ARGOS. With an increased resolution, higher encircled energy, both imaging and MOS spectroscopy will be boosted in signal to noise by a large amount. Apart from the wide field correction ARGOS delivers in its ground layer mode, we already foresee the implementation of a hybrid Sodium with Rayleigh beacon combination for a diffraction limited AO performance.

  14. Puitmaja klaster : intervjuu Argo Sauliga / Argo Saul ; intervjueerinud Kalle Komissarov

    Index Scriptorium Estoniae

    Saul, Argo

    2010-01-01

    Eesti Puitmajaliidu juhatuse esimehe ning Nordic Houses osaniku ja juhatuse esimehe Argo Sauliga arhitektide ja tüüpmaja tootjate võimalikust koostööst Eesti puitmaja klastris, millega Eesti Arhitektide Liit on liitunud. Nordic Houses on norra arhitektide projektide järgi tootnud ja tarninud üle 700 puhkemaja Norrasse

  15. Reval Hotel Lietuva / Argo Vaikla

    Index Scriptorium Estoniae

    Vaikla, Argo, 1966-

    2004-01-01

    Vilniuse hotelli "Lietuva" renoveerimine. Arhitektuurne renoveerimisprojekt: Aare Saks, Nils Palm (SWECO FFNS Arkitekter AB, Rootsi), Rolandas Palekas (UAB Viltekta). Sisekujundus: Katrin ja Argo Vaikla, Liis Lindvere, Peeter Loo (Vaikla Disain AS). Ehitaja: Merko Statyba UAB. Projekt 2002, valmis 2003. I korruse plaan, välisvaade, 4 sisevaadet

  16. Argo packing friction research update

    International Nuclear Information System (INIS)

    This paper focuses on the issue of valve packing friction and its affect on the operability of motor- and air-operated valves (MOVs and AOVs). At this time, most nuclear power plants are required to perform postmaintenance testing following a packing adjustment or replacement. In many cases, the friction generated by the packing does not impact the operability window of a valve. However, to date there has not been a concerted effort to substantiate this claim. To quantify the effects of packing friction, it has become necessary to develop a formula to predict the friction effects accurately. This formula provides a much more accurate method of predicting packing friction than previously used factors based strictly on stem diameter. Over the past 5 years, Argo Packing Company has been developing and testing improved graphite packing systems at research facilities, such as AECL Chalk River and Wyle Laboratories. Much of this testing has centered around reducing and predicting friction that is related to packing. In addition, diagnostic testing for Generic Letter 89-10 MOVs and AOVs has created a significant data base. In July 1992 Argo asked several utilities to provide running load data that could be used to quantify packing friction repeatability and predictability. This technical paper provides the basis to predict packing friction, which will improve calculations for thrust requirements for Generic Leter 89-10 and future AOV programs. In addition, having an accurate packing friction formula will improve packing performance when low running loads are identified that would indicate insufficient sealing force

  17. OBIS - ARGOS Satellite Tracking of Animals

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Various species have been tracked using ARGOS PTT trackers since the early 1990's. These include Emperor, King and Adelie pengiuns, Light-mantled Sooty, Grey-headed...

  18. Unified Approach in the DSS Development Process

    Directory of Open Access Journals (Sweden)

    2007-01-01

    Full Text Available The structure of today's decision support environment become very complex due to new generation of Business Intelligence applications and technologies like Data Warehouse, OLAP (On Line Analytical Processing and Data Mining. In this respect DSS development process are not simple and needs an adequate methodology or framework able to manage different tools and platforms to achieve manager's requirements. The DSS development process must be view like a unified and iterative set of activities and operations. The new techniques based on Unified Process (UP methodology and UML (Unified Modeling Language it seems to be appropriate for DSS development using prototyping and RAD (Rapid Application Development techniques. In this paper we present a conceptual framework for development and integrate Decision Support Systems using Unified Process Methodology and UML.

  19. Integration of dispersion and radio ecological modelling in ARGOS NT

    International Nuclear Information System (INIS)

    The Danish development ARGOS NT system is in operation in Denmark and 5 Baltic Sea states. Based on data from 40 advanced early warning stations - PMS stations - and various other monitoring sources the ARGOS NT system provides an excellent basis for decision. ARGOS NT is a dynamic system that is modified regularly in order to cope with new requirements. The present version of the system includes features such as: dynamical presentation facilities for the EURDEP data exchange format, presentation of high spatial resolution data and isotropic information from the Danish Airborne monitoring systems. The new version of the system includes a module for simulating food chain transfer and dose assessment. It is based on the radioecological model ECOSYS. This model has been initially developed for German conditions; therefore it is necessary to adapt it to the conditions of those countries where ARGOS-NT is applied. Concentration of radioactivity in foodstuffs (crops and animal products) as a function of time is the endpoint of the food chain part. Doses from internal exposure (ingestion, inhalation) and external exposure can be estimated for different age groups. Rough estimations of collective dose can be made if the necessary data is available. Further a new dispersion module called MET-DISP has been integrated. Met-DISP is a comprehensive meteorological dispersion forecast module for emergency response. MET-DISP is designed to provide forecasts of dispersion, gamma doses and deposition from releases of radioactive material on local, national and continental scales. The module enables real-time forecasts via a set of local scale wind and atmospheric dispersion models that are driven by on-line available meteorological information. Meteorological information is made available to the system either via on-line connections to local meteorological observations (met-towers and sodars) or via on-line network connections to Meteorological Services. The system provides forecast

  20. ARGO-YBJ detector simulation using GEANT4

    International Nuclear Information System (INIS)

    'G4argo', a GEANT4-based simulation package for the ARGO-YBJ detector, is described in this paper. G4argo incorporates in the simulation the true RPC time resolution and another 0.5 ns time uncertainty which is introduced from the offline calibration of TDC. In addition, the correct RPC geometry and the true materials for the ARGO-YBJ experimental hall are implemented. As a result, G4argo simulation shows a very good agreement with real data. (authors)

  1. Selective gelatinase blockage ameliorates acute DSS colitis

    OpenAIRE

    Heimesaat, M. M.; Dunay, I R; Fuchs, D.; Trautmann, D.; Fischer, A; Kühl, A. A.; Loddenkemper, C.; Batra, A.; Siegmund, B.; Krell, H.-W.; Bereswill, S.; Liesenfeld, O.

    2011-01-01

    In the experimental models of intestinal inflammation and humans with inflammatory bowel diseases (IBD), increased levels of the matrix metalloproteinases (MMPs), MMP-2 and -9 (also referred to as gelatinase A and B, respectively), in inflamed tissue sites can be detected. In the presented study, we investigated potential beneficial effects exerted by doxycycline nonselectively blocking MMPs and the selective gelatinase inhibitor RO28-2653 in acute DSS colitis. Treatment wit...

  2. Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system

    CERN Document Server

    Bonaglia, Marco

    2012-01-01

    ARGOS is the laser guide star ground layer adaptive optics system of the LBT. ARGOS is designed to bring a moderate but uniform reduction of the PSF size over a FoV as large as 4x4arcmin, allowing a significative increase of the science throughput of LUCI, the LBT NIR imager and MOS. ARGOS relays on 3 Rayleigh beacons to sense the lower layers of the atmosphere achieving almost 100% sky coverage. The ground layer AO correction is allowed by the 2 adaptive secondaries of the LBT. This PhD thesis first discusses a study based on numerical simulations and aimed to evaluate the performance of ARGOS. This work has been carried out using CAOS and representing in the code most of the features that characterize the system itself: as the laser beacon propagation in the atmosphere, the SH type wavefront sensing, the AO reconstruction and closed loop delays and the atmosphere tip-tilt sensing done using a NGS and a quad-cell type sensor. The results obtained in this study are in agreement and definitively confirm the pe...

  3. Impact study of the Argo array definition in the Mediterranean Sea based on satellite altimetry gridded data

    Science.gov (United States)

    Sanchez-Roman, Antonio; Ruiz, Simón; Pascual, Ananda; Guinehut, Stéphanie; Mourre, Baptiste

    2016-04-01

    the Mediterranean as the "true" field. The choice of the reference depth of Argo profiles impacts the number of valid profiles used to compute DHA and therefore the spatial coverage by the network. Results show that the impact of the reference level in the computation of Argo DH is statistically significant since the standard deviation of the differences between DH computed from Altimetry and Argo data referred to reference depth of 400 dbar and 900 dbar are quite different (4.85 and 5.11 cm, respectively). Therefore, 400 dbar should be taken as reference depth to compute DHA from Argo data in the Mediterranean. On the contrary, similar scores are obtained when shallow floats are not included in the computation (4.85 cm against 4.87 cm). In any case, we must highlight that all the studies show significant correlations (95 %) higher than 0.70 between Altimetry and Argo data with a STD for the differences between both datasets of around 4.90 cm. Furthermore, the sub-basin study shows improved statistics for the eastern sub-basin for DHA referred to 400 dbar while minimum values are obtained for the western sub-basin when computing DHA referred to 900 dbar. On the other hand, results about the OSSEs suggest that maintaining an array of Argo floats of 100×100 km, the variance of the large-scale signal and most of the mesoscale features of SLA fields are recovered. Therefore, the network coverage should be enlarged in the Mediterranean in order to achieve at least this spatial resolution.

  4. Job submission and management system design and implementation for the ARGO grid

    International Nuclear Information System (INIS)

    The ARGO Grid job submission and management system has been developed on the ARGO grid to provide a convenient and efficient way of submitting ARGO jobs to the grid for ARGO physics users. This paper gives details of the system design and implementation with database technique and wrapper technique. The system has been successfully deployed and tested in the ARGO grid with ARGO reconstruction and simulation applications. (authors)

  5. The ArgoNeuT Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Szelc, Andrzej M. [Yale University, Physics Department, New Haven, CT 06511 (United States)

    2015-05-15

    The ArgoNeuT (Argon Neutrino Test) Experiment ran on the NuMI beam line at the Fermi National Accelerator Laboratory, from Sep 2009 to Feb 2010. It is the first stage of the US R and D effort on using Liquid Argon Time Projection Chambers (LArTPCs) as neutrino detectors. ArgoNeuT has collected thousands of beam neutrino events in the 0.1 -10 GeV energy range during its run and, apart from fulfilling its R and D goals, is now publishing physics results, including the first measurement of the inclusive muon neutrino charged current differential cross sections on argon. These proceedings will present these results, together with the perspectives for ongoing and future analyses, as well as ideas for running the detector in a test beam of charged particles.

  6. Processed coffee alleviates DSS-induced colitis in mice

    Directory of Open Access Journals (Sweden)

    Bernd L. Fiebich

    2013-05-01

    Full Text Available ABSTRACTBackground: Coffee is one of the most widely consumed beverages in the world and it has been demonstrated that it has important therapeutic activities not only because of its caffeine content but also owing to the presence of other biologically active small molecules such as chlorogenic acid, trigonelline and cyclopentadiones. However, chlorogenic acid is degraded into catechol, pyrogallol and hydroxyhydroquinone, which are thought to induce irritation of the gastric mucosa. To reduce the content of irritant compounds processing methods have been developed prior to roasting the coffee beans.Objectives: The aim of this study was to study the anti-inflammatory and gastro-protective effects of processed coffee (Idee-Kaffee on in LPS-treated human primary monocytes and in a murine model of colon inflammation (IBD model.Results: In this study we have analyzed the effects on inflammatory events in cultured cells and in mice drinking a commercially available processed coffee. The processed coffee inhibited lipopolysaccharide (LPS-induced proinflammatory cytokines such as interleukin (IL-1, tumor necrosis factor (TNF, IL-6 and IL-8, and other inflammatory mediators such as prostaglandin (PGE2 and 8-isoprostane in cultured human primary monocytes. Oral administration of dissolved processed coffee, i.e., in its usual beverage form, improved greatly the adverse macroscopic and histological features of dextran sodium sulfate (DSS-induced colitis in mice in a dose-dependent manner. Processed coffee not only largely prevented DSS-induced colitis but also dramatically suppressed in vivo NF-B and STAT3 activities through inhibition of IB and STAT3 phosphorylation. Furthermore, this solubleFunctional Foods in Health and Disease 2013; 3(5:133-145coffee bean extract reduced the expression of proinflammatory cytokines TNF, IL-11, and IL-6 and the expression of cyclooxygenase (COX-2 in colonic tissues.Conclusions: This work identified

  7. DSS1/Sem1, a Multifunctional and Intrinsically Disordered Protein

    DEFF Research Database (Denmark)

    Kragelund, Birthe B; Schenstrøm, Signe M; Rebula, Caio A;

    2016-01-01

    DSS1/Sem1 is a versatile intrinsically disordered protein. Besides being a bona fide subunit of the 26S proteasome, DSS1 associates with other protein complexes, including BRCA2-RPA, involved in homologous recombination; the Csn12-Thp3 complex, involved in RNA splicing; the integrator, involved in...

  8. The Impact of "Bad" Argo Profiles on Ocean Data Assimilation

    Institute of Scientific and Technical Information of China (English)

    YAN Chang-Xiang; ZHU Jiang

    2010-01-01

    Recent studies have found cold biases in a fraction of Argo profiles (hereinafter referred to as bad Array for Real-time Geostrophic Oceanography (Argo) profiles) due to the pressure drifts during 2003 and 2006. These bad Argo profiles have had an important impact on in situ observation-based global ocean heat content estimates. This study investigated the impact of bad Argo profiles on ocean data assimilation results that were based on observations from diverse ocean observation systems, such as in situ profiles (e.g., Argo, expendable bathythermograph (XBT), and Tropical Atmosphere Ocean (TAO), remote-sensing sea surface temperature products and satellite altimetry between 2004 and 2006. Results from this work show that the upper ocean heat content analysis is vulnerable to bad Argo profiles and demonstrate a cooling trend in the studied period despite the multiple independent data types that were assimilated. When the bad Argo profiles were excluded from the assimilation, the decreased heat content disappeared and a warming occurred. Combination of satellite altimetry and mass variation data from gravity satellite demonstrated an increase, which agrees well with the increased heat content. Additionally, when an additional Argo profile quality control procedure was utilized that simply removed the profiles that presented static unstable water columns, the results were very similar to those obtained when the bad Argo profiles were excluded from the assimilation. This indicates that an ocean data assimilation that uses multiple data sources with improved quality control could be less vulnerable to a major observation system failure, such as a bad Argo event.

  9. Modelling decision support and uncertainty for large transport infrastructure projects: The CLG-DSS model of the Øresund Fixed Link

    DEFF Research Database (Denmark)

    Salling, Kim Bang; Leleur, Steen; Jensen, Anders Vestergaard

    2007-01-01

    This paper presents a decision support system, named the CLG-DSS model, which makes it possible for decision makers to assess various uncertainties in project appraisal in a systematic and explicit way. This model, a decision support system (DSS) developed within the Danish Centre for Logistics and...... of appraisal uncertainty and thereby, at the same time, demonstrate the features of the CLG-DSS model as a useful decision support tool. It is finally concluded that appraisal of large infrastructure projects can be effectively supported by dealing with uncertainty issues in accordance with the...

  10. The Argo NOC: Combining TDM and GALS

    DEFF Research Database (Denmark)

    Kasapaki, Evangelia; Sparsø, Jens

    2015-01-01

    a static schedule. This requires some form of global synchrony across the platform. At the same time it is generally accepted that a large chip should employ some form of globally-asynchronous locally-synchronous (GALS) organization. By using asynchronous routers and by rethinking the...... microarchitecture of the network interfaces we have managed to combine TDM and GALS and obtain a very hardware-efficient implementation of the NOC. The paper gives a brief overview of the Argo NOC and focuses on two important issues: how to safely bring the NOC out of reset and timing analysis of the network of...

  11. ARGOS un reactor a la diagonal

    OpenAIRE

    Barca Salom, Francesc Xavier

    2011-01-01

    El reactor Argos va funcionar des del 16 de gener de 1963 en què va aconseguir l’autorització provisional. Al 1976 el reactor fou aturat per exigències de la nova llei nuclear. Al 1987 es va procedir a la clausura i el 1992 es va enviar l’urani a la Gran Bretanya i es va engegar un procés de descontaminació i desmantellament. Va ser el primer reactor experimental construit majoritàriament a la Junta d'Energia Nuclear.

  12. DSS and GIS in Knowledge Transformation Process

    Directory of Open Access Journals (Sweden)

    Klimešová Dana

    2009-06-01

    Full Text Available Knowledge is an important resource for successful decision-making process in the whole society today. The special procedures of control and management of knowledge therefore have to be used. In the area of knowledge management and knowledge engineering basic terms of these disciplines are data, information, knowledge and knowledge transformation. The knowledge can be defined as a dynamic human process of justifying personal beliefs. Knowledge is a product of successful decision-making process. Knowledge transformation is a spiralling process of interactions between explicit and tacit knowledge that leads to the new knowledge. Nonaka and all show, that the combination of these two categories makes possible to conceptualise four conversion steps: Socialisation, Externalisation, Combination and Internalisation (SECI model. Another model of knowledge creation is the Knowledge Transformation Continuum (BCI Knowledge Group that begins with the articulation of a specific instruction representing the best way that a specific task, or series of tasks, should be performed. Knowledge modelling and knowledge representation is an important field of research also in Computer Science and Artificial Intelligence. The definition of knowledge in Artificial Intelligence is a noticeable different, because Artificial Intelligence is typically dealing with formalized knowledge (e.g. ontology. The development of knowledge-based systems was seen as a process of transferring human knowledge to an implemented knowledge base. Decision Support Systems (DSS, Geographical Information Systems (GIS and Operations Research/Management Science (OR/MS modelling process support decision-making process, therefore they also produce a new knowledge. A Decision Support Systems are an interactive computer-based systems helping decision makers complete decision process. Geographic Information Systems provide essential marketing and customer intelligence solutions that lead to better

  13. Grim19 Attenuates DSS Induced Colitis in an Animal Model

    Science.gov (United States)

    Kim, Jae-kyung; Lee, Seung Hoon; Lee, Seon-Young; Kim, Eun-Kyung; Kwon, Jeong-Eun; Seo, Hyeon-Beom; Lee, Han Hee; Lee, Bo-In; Park, Sung-Hwan; Cho, Mi-La

    2016-01-01

    DSS induced colitis is a chronic inflammatory disease characterized by inflammation in the gastrointestinal tract, which destabilizes the gut and induces an uncontrolled immune response. Although DSS induced colitis is generally thought to develop as a result of an abnormally active intestinal immune system, its pathogenesis remains unclear. Gene associated with retinoid interferon induced mortality (Grim) 19 is an endogenous specific inhibitor of STAT3, which regulates the expression of proinflammatory cytokines. In this study, we investigated the influence of GRIM19 in a DSS induced colitis mouse model. We hypothesized that Grim19 would ameliorate DSS induced colitis by altering STAT3 activity and intestinal inflammation. Grim19 ameliorated DSS induced colitis severity and protected intestinal tissue. The expression of STAT3 and proinflammatory cytokines such as IL-1β and TNF-α in colon and lymph nodes was decreased significantly by Grim19. Moreover, DSS induced colitis progression in a Grim19 transgenic mouse line was inhibited in association with a reduction in STAT3 and IL-17 expression. These results suggest that Grim19 attenuates DSS induced colitis by suppressing the excessive inflammatory response mediated by STAT3 activation. PMID:27258062

  14. Radon levels in dwelling shielded spaces (DSS) in Israel

    International Nuclear Information System (INIS)

    Exposure to radon gas is known as the major contributor to the general public exposure to ionizing radiation. The typical radon concentration in Israeli houses with a direct ground contact is about 50 Bq/m3, attributed mainly to soil gas penetration into the house. All newly constructed buildings (since 1991) must include Dwelling Shielded Spaces (DSS) which are rooms made of massive solid concrete, equipped with air-tight steel door and window. The DSS serve as shelters against both explosive and chemical warfare. In normal practice, the DSS serves as a conventional room in the household. Standard size DSS contain a mass of around 35 tons of concrete with typical 226Ra activity concentration of 30 Bq/kg. This mass of concrete is expected to increase the radon concentration in the DSS room due to exhalation from the building material. Published exhalation rate values from concrete in the US and Europe vary from 0.1 to 8 mBq/m2sec. (0.5 - 30 Bq/m2h). This work presents short and long-term radon measurements performed in high-rise building DSS's. Measurements of the free exhalation rate and wall exhalation rate as well as ventilation rate in DSS are also presented and the relation between these quantities is analyzed

  15. Implementing a decision support system (DSS in e-business

    Directory of Open Access Journals (Sweden)

    Alexandra Ruiz G.

    2010-05-01

    Full Text Available Decision support systems (DSS and e-business (EB have emerged as separate areas. However, currently, and for some years now, DSS and EB have become merged to provide customers with greater benefits and added value. There are different types of DSS and different categories and business models for EB; one area’s applicability to the other thus expands the possible combi- nations which can arise from such different categories. Some representative examples would include auction sites which, through applying intelligent agents, can learn about which products to offer or when and where to sell them; DSS allow a company’s in- formation avilable in web portals for customers and employees to be accessed in a controlled way and decisions thus made; vir- tual stores may be positively affected by data mining and data warehousing being applied; complex algorithms could be used in customer relationship management for predicting and analysing “what would happen if” to identify revenue opportunities in com- petitive markets; and a wide range of other applications where imagination is the limit. Research into DSS / BE must be ongoing due to the constant emergence of new business models and DSS subsystems. Applications can be varied and provide bi-directio- nal support for each one. New interaction mechanisms and efforts to satisfy customers are also the focus of inspiration for new applications for DSS systems in EB.

  16. Experience of the ARGO autonomous vehicle

    Science.gov (United States)

    Bertozzi, Massimo; Broggi, Alberto; Conte, Gianni; Fascioli, Alessandra

    1998-07-01

    This paper presents and discusses the first results obtained by the GOLD (Generic Obstacle and Lane Detection) system as an automatic driver of ARGO. ARGO is a Lancia Thema passenger car equipped with a vision-based system that allows to extract road and environmental information from the acquired scene. By means of stereo vision, obstacles on the road are detected and localized, while the processing of a single monocular image allows to extract the road geometry in front of the vehicle. The generality of the underlying approach allows to detect generic obstacles (without constraints on shape, color, or symmetry) and to detect lane markings even in dark and in strong shadow conditions. The hardware system consists of a PC Pentium 200 Mhz with MMX technology and a frame-grabber board able to acquire 3 b/w images simultaneously; the result of the processing (position of obstacles and geometry of the road) is used to drive an actuator on the steering wheel, while debug information are presented to the user on an on-board monitor and a led-based control panel.

  17. Prevention of Chronic Experimental Colitis Induced by Dextran Sulphate Sodium (DSS in Mice Treated with FR91

    Directory of Open Access Journals (Sweden)

    Valter R. M. Lombardi

    2012-01-01

    Full Text Available One of the main treatments currently used in humans to fight cancer is chemotherapy. A huge number of compounds with antitumor activity are present in nature, and many of their derivatives are produced by microorganisms. However, the search for new drugs still represents a main objective for cancer therapy, due to drug toxicity and resistance to multiple chemotherapeutic drugs. In animal models, a short-time oral administration of dextran sulfate sodium (DSS induces colitis, which exhibits several clinical and histological features similar to ulcerative colitis (UC. However, the pathogenic factors responsible for DSS-induced colitis and the subsequent colon cancer also remain unclear. We investigated the effect of FR91, a standardized lysate of microbial cells belonging to the Bacillus genus which has been previously shown to have significant immunomodulatory effects, against intestinal inflammation. Colitis was induced in mice during 5 weeks by oral administration 2% (DSS. Morphological changes in the colonic mucosa were evaluated by hematoxylin-eosin staining and immunohistochemistry methods. Adenocarcinoma and cryptal cells of the dysplastic epithelium showed cathenin-β, MLH1, APC, and p53 expression, together with increased production of IFN-γ. In our model, the optimal dose response was the 20% FR91 concentration, where no histological alterations or mild DSS-induced lesions were observed. These results indicate that FR91 may act as a chemopreventive agent against inflammation in mice DSS-induced colitis.

  18. PCI DSS a practical guide to implementing and maintaining compliance

    CERN Document Server

    Wright, Steve

    2011-01-01

    This newly revised, practical guide, gives you a step by step guide to achieving Payment Card Industry Data Security Standard (PCI DSS) compliance - showing you how to create, design and build a PCI compliance framework.

  19. Hotelli Palace**** renoveerimine = Renovation of the hotel Palace**** / Argo Vaikla

    Index Scriptorium Estoniae

    Vaikla, Argo, 1966-

    2015-01-01

    Hotell Palace Tallinnas Vabaduse väljak 3, valminud 2014. Hoone rekonstrueerimisprojekt Reet Valk (AB Reet Valk), sisearhitektid Katrin Vaikla, Argo Vaikla, Mari-Liis Süld, Riin Luuk. 2014. aasta Kultuurkapitali Arhitektuuripreemia kandidaat

  20. Argos: An Optimized Time-Series Photometer

    Indian Academy of Sciences (India)

    Anjum S. Mukadam; R. E. Nather

    2005-06-01

    We designed a prime focus CCD photometer, Argos, optimized for high speed time-series measurements of blue variables (Nather & Mukadam 2004) for the 2.1 m telescope at McDonald Observatory. Lack of any intervening optics between the primary mirror and the CCD makes the instrument highly efficient.We measure an improvement in sensitivity by a factor of nine over the 3-channel PMT photometers used on the same telescope and for the same exposure time. The CCD frame transfer operation triggered by GPS synchronized pulses serves as an electronic shutter for the photometer. This minimizes the dead time between exposures, but more importantly, allows a precise control of the start and duration of the exposure. We expect the uncertainty in our timing to be less than 100 s.

  1. Cosmic ray physics with ARGO-YBJ

    CERN Document Server

    ,

    2016-01-01

    The ARGO--YBJ experiment has been in stable data taking for more than five years at the Yangbajing cosmic ray observatory (Tibet, P.R. China, 4300 m a.s.l.). The detector collected about $5\\times10^{11}$ events in a wide energy range from few TeVs up to the PeV region. In this work we summarize the latest results in cosmic ray physics particularly focusing on the cosmic ray energy spectrum. The results of the measurement of the all-particle and proton plus helium energy spectra in the energy region between $10^{12} - 10^{16}$ eV are discussed. A precise measurement of the cosmic ray energy spectrum and composition in this energy region allows a better understanding of the origin of the knee and provides a powerful cross-check among different experimental techniques.

  2. A statistical method for correcting salinity observations from autonomous profiling floats: An ARGO perspective

    Digital Repository Service at National Institute of Oceanography (India)

    Durand, F.; Reverdin, G.

    The Profiling Autonomous Lagrangian Circulation Explorer (PALACE) float is used to implement the Array for Real-Time Geostrophic Oceanography (ARGO). This study presents a statistical approach to correct salinity measurement errors of an ARGO...

  3. ARGOS: the laser guide star system for the LBT

    Science.gov (United States)

    Rabien, S.; Ageorges, N.; Barl, L.; Beckmann, U.; Blümchen, T.; Bonaglia, M.; Borelli, J. L.; Brynnel, J.; Busoni, L.; Carbonaro, L.; Davies, R.; Deysenroth, M.; Durney, O.; Elberich, M.; Esposito, S.; Gasho, V.; Gässler, W.; Gemperlein, H.; Genzel, R.; Green, R.; Haug, M.; Hart, M. L.; Hubbard, P.; Kanneganti, S.; Masciadri, E.; Noenickx, J.; Orban de Xivry, G.; Peter, D.; Quirrenbach, A.; Rademacher, M.; Rix, H. W.; Salinari, P.; Schwab, C.; Storm, J.; Strüder, L.; Thiel, M.; Weigelt, G.; Ziegleder, J.

    2010-07-01

    ARGOS is the Laser Guide Star adaptive optics system for the Large Binocular Telescope. Aiming for a wide field adaptive optics correction, ARGOS will equip both sides of LBT with a multi laser beacon system and corresponding wavefront sensors, driving LBT's adaptive secondary mirrors. Utilizing high power pulsed green lasers the artificial beacons are generated via Rayleigh scattering in earth's atmosphere. ARGOS will project a set of three guide stars above each of LBT's mirrors in a wide constellation. The returning scattered light, sensitive particular to the turbulence close to ground, is detected in a gated wavefront sensor system. Measuring and correcting the ground layers of the optical distortions enables ARGOS to achieve a correction over a very wide field of view. Taking advantage of this wide field correction, the science that can be done with the multi object spectrographs LUCIFER will be boosted by higher spatial resolution and strongly enhanced flux for spectroscopy. Apart from the wide field correction ARGOS delivers in its ground layer mode, we foresee a diffraction limited operation with a hybrid Sodium laser Rayleigh beacon combination.

  4. The AOM/DSS murine model for the study of colon carcinogenesis: From pathways to diagnosis and therapy studies

    Directory of Open Access Journals (Sweden)

    Mariangela De Robertis

    2011-01-01

    Full Text Available Colorectal cancer (CRC is a major health problem in industrialized countries. Although inflammation-linked carcinogenesis is a well accepted concept and is often observed within the gastrointestinal tract, the underlying mechanisms remain to be elucidated. Inflammation can indeed provide initiating and promoting stimuli and mediators, generating a tumour-prone microenvironment. Many murine models of sporadic and inflammation-related colon carcinogenesis have been developed in the last decade, including chemically induced CRC models, genetically engineered mouse models, and xenoplants. Among the chemically induced CRC models, the combination of a single hit of azoxymethane (AOM with 1 week exposure to the inflammatory agent dextran sodium sulphate (DSS in rodents has proven to dramatically shorten the latency time for induction of CRC and to rapidly recapitulate the aberrant crypt foci-adenoma-carcinoma sequence that occurs in human CRC. Because of its high reproducibility and potency, as well as the simple and affordable mode of application, the AOM/DSS has become an outstanding model for studying colon carcinogenesis and a powerful platform for chemopreventive intervention studies. In this article we highlight the histopathological and molecular features and describe the principal genetic and epigenetic alterations and inflammatory pathways involved in carcinogenesis in AOM/DSS-treated mice; we also present a general overview of recent experimental applications and preclinical testing of novel therapeutics in the AOM/DSS model.

  5. Meso-scale circulation at the intermediate-depth east of Mindanao observed by Argo profiling floats

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The meso-scale circulation at the intermediate depth east of Mindanao is studied using Argo profiling floats observations. The trajectories and the parking-depth velocities of Argo floats show that the intermediate-depth circulation east of Mindanao contains significant meso-scale features that are highly variable both in space and in time. Both cyclonic and anticyclonic eddies at the intermediate depth (1000–2000 m) are indicated by the trajectories east of Mindanao. The mean tangential velocities of these eddies are about 10 cm/s at 2000 m and over 20 cm/s at 1000 m, which indicates that the geostrophic calculation may contain large errors due to the vigorous eddy activity at the reference levels. The analyses also suggest that these eddies might play an important role in mass and vorticity balances of the intermediate-depth circulation east of Mindanao.

  6. Diffraction limited operation with ARGOS: a hybrid AO system

    Science.gov (United States)

    Bonaglia, M.; Busoni, L.; Quirós-Pacheco, F.; Esposito, S.

    2010-07-01

    ARGOS, the Laser Guide Star (LGS) facility of the Large Binocular Telescope (LBT), implements a Ground Layer Adaptive Optics (GLAO) system, using 3 low-altitude beacons, to improve the resolution over the 4'×4' FoV of the imager and Multi Object Spectrograph (MOS) LUCIFER. In this paper we discuss the performance and the reconstruction scheme of an hybrid AO system using the ARGOS Rayleigh beacons complemented with a single faint high-altitude star (NGS or sodium beacon) to sense the turbulence of the upper atmosphere allowing an high degree of on-axis correction. With the ARGOS system, the NGS-upgrade can be immediately implemented at LBT using the already existing Pyramid WFS offering performance similar to the NGS AO system with the advantage of a larger sky coverage.

  7. Dry storage system for spent nuclear fuel DSS

    International Nuclear Information System (INIS)

    The DSS is a Dry Storage System manufactured by INVAP for spent nuclear fuel. Spent fuel removed from the reactor of nuclear plants is usually stored in water pools where water acts as radiological shielding and as coolant. Pool water and pool building air require regular monitoring and maintenance. The DSS offers a more economical and safe alternative to store spent fuel which has had partial decay of its activity in the plant storage pool. The DSS alternative uses above ground concrete silos. With the DSS system spent fuel is loaded in steel baskets before fuel is removed from the storage pool of the power plant. Each basket holds several fuel bundles. Each basket is taken from the pool and dried in a shielded transfer cell. The basket loaded with dry fuel is then covered and seal welded. Each basket is transported inside a shielded container to its storage place in the concrete silo. The silo is a steel cylinder with capacity to store several baskets and surrounded by a thick reinforced concrete shielding. Baskets are housed inside the steel cylinder on top of each other. The silos are closed with a plug made of steel-lined reinforced concrete. When a silo is full the steel lining of the plug is seal welded to the steel cylinder. The system has been designed for a minimum of 50 years

  8. Decision models for cash-flow DSS (part 1

    Directory of Open Access Journals (Sweden)

    Razvan PETRUSEL

    2006-01-01

    Full Text Available The goal of this paper is to present some of the work conducted in order to create a cash-flow DSS that aims to improve the financial decisions of Romanian small and medium enterprise managers. In order to create the desired DSS two major stages were followed: the construction of models for various financial decisions and the implementation of those models within the knowledge base of the DSS. The present paper covers the first stage while the second stage will be presented in the next article. For a better understanding, the paper is divided into three parts: theoretical considerations, practical application of theory and conclusions. The theoretical part builds up on basic definitions and previous decision theory research, and, taking into consideration different modeling methodologies, establishes the necessary steps and tools that will be used in the second part. The second part establishes the decisional situations that will be modeled, briefly describes each of them and shows the models devised according to particularities of small and medium enterprises. The goal of this part is to create a model (variables, relations between them, etc that is suited for implementation in a cash-flow DSS. In the final part some conclusions are stated and the future research direction is established.

  9. A global comparison of Argo and satellite altimetry observations

    Directory of Open Access Journals (Sweden)

    A.-L. Dhomps

    2010-05-01

    Full Text Available Differences and complementarities between Sea Level Anomalies (SLA deduced from altimeter measurements and dynamic height anomalies (DHA calculated from Argo in situ temperature (T and salinity (S profiles are globally analyzed. Compared to previous studies, Argo data allows a much better spatial coverage of all oceans and particularly the Southern Ocean, the use of salinity measurements and the use of a deeper reference level. The use of time series along the Argo float trajectories also provides a means to describe the vertical structure of the ocean both for the low frequency and the mesoscale part of the circulation. The comparison shows the very good consistency between Argo and altimeter observations. Correlations range from 0.9 in low latitudes to 0.3 in high latitudes where the contributions of deep baroclinic and barotropic signals are the largest. The study underlines the large influence of salinity observations on the consistency between altimetry and hydrographic observations. SLA/DHA consistency is thus improved by 35% (relative to the SLA minus DHA signal by using measured S profiles instead of climatology data. The use of a deep reference level also significantly improves the correlation at mid and high latitudes. The role of seasonal signals on the correlation and regression analysis between altimeter and Argo observations is also analyzed. As they are mainly associated with the heating/cooling of surface layers, removing these large scale signals significantly reduces the correlation and impacts the geographical structure of the Argo/altimetry regression coefficients. These results emphasize the need to separate the different time and space scales in order to improve the merging of the two data sets. The study of seasonal to interannual SLA minus DHA signals finally reveals interesting signals related to deep ocean circulation variations. Future work is, however, needed to understand the observed differences

  10. Data Warehouse Architecture for DSS Applciations

    Directory of Open Access Journals (Sweden)

    V. J. Anand

    1996-11-01

    Full Text Available A data warehouse facilitates the integration of disparate operational databases in an enterprise into a single store. The warehouse then provides knowledge workers with easy access to historical, summarized and other forms of aggregated data. A major flaw in present warehouse architectures is the de-coupling of the warehouse database from its underlying operational databases. This creates two problems: the difficulty in updating the warehouse and the inability to provide users with a drill-down feature from warehouse to current data. We propose an architecture that is based on a federated database system extended to incorporate a materialized warehouse. A federated database provides the basic mechanism to tightly couple heterogeneous databases, which in this case are the operational and warehouse databases. The warehouse database is a special component in the federation, made up of historical data, external data and materialized views of the operational data. This approach enables users to access historical and current data when required, and provides a method of maintaining the warehouse as an integrated view of the underlying operational data sources.

  11. Characterizing Ocean Turbulence from Argo, Acoustic Doppler, and Simulation Data

    Science.gov (United States)

    McCaffrey, Katherine

    Turbulence is inherently chaotic and unsteady, so observing it and modeling it are no easy tasks. The ocean's sheer size makes it even more difficult to observe, and its unpredictable and ever-changing forcings introduce additional complexities. Turbulence in the oceans ranges from basin scale to the scale of the molecular viscosity. The method of energy transfer between scales is, however, an area of active research, so observations of the ocean at all scales are crucial to understanding the basic dynamics of its motions. In this collection of work, I use a variety of datasets to characterize a wide range of scales of turbulence, including observations from multiple instruments and from models with different governing equations. I analyzed the largest scales of the turbulent range using the global salinity data of the Argo profiling float network. Taking advantage of the scattered and discontinuous nature of this dataset, the second-order structure function was calculated down to 2000m depth, and shown to be useful for predicting spectral slopes. Results showed structure function slopes of 2/3 at small scales, and 0 at large scales, which corresponds with spectral slopes of -5/3 at small scales, and -1 at large scales. Using acoustic Doppler velocity measurements, I characterized the meter- to kilometer-scale turbulence at a potential tidal energy site in the Puget Sound, WA. Acoustic Doppler current profiler (ADCP) and acoustic Doppler velocimeter (ADV) observations provided the data for an analysis that includes coherence, anisotropy, and intermittency. In order to more simply describe these features, a parameterization was done with four turbulence metrics, and the anisotropy magnitude, introduced here, was shown to most closely capture the coherent events. Then, using both the NREL TurbSim stochastic turbulence generator and the NCAR large-eddy simulation (LES) model, I calculated turbulence statistics to validate the accuracy of these methods in reproducing

  12. Observation of Horizontal Air Showers with ARGO-YBJ

    International Nuclear Information System (INIS)

    A preliminary analysis of Extensive Air Showers reconstructed by ARGO-YBJ with zenith angle greater than 80° is reported. The measurement of the size spectrum and of the azimuthal distribution is discussed. A description of the topology of these events is also provided.

  13. A method to manage the model base in DSS

    Institute of Scientific and Technical Information of China (English)

    孙成双; 李桂君

    2004-01-01

    How to manage and use models in DSS is a most important subject. Generally, it costs a lot of money and time to develop the model base management system in the development of DSS and most are simple in function or cannot be used efficiently in practice. It is a very effective, applicable, and economical choice to make use of the interfaces of professional computer software to develop a model base management system. This paper presents the method of using MATLAB, a well-known statistics software, as the development platform of a model base management system. The main functional framework of a MATLAB-based model base managementsystem is discussed. Finally, in this paper, its feasible application is illustrated in the field of construction projects.

  14. Integrated data-driven DSS in a laboratory environment

    OpenAIRE

    Hargrave, Brian L.

    2008-01-01

    Decision support technologies have remained individualistic as primarily stand alone platforms. The ability to access and integrate a wide range of such technologies in an Integrated Decision Technology Environment (IDTE) can potentially increase a user's ability to create more complex decision support projects. A well designed IDTE will allow users to identify, learn about, access, execute and integrate disparate decision technologies. Data-Driven DSS provide decision-makers with th...

  15. Decision Support Systems (DSS in Construction Tendering Processes

    Directory of Open Access Journals (Sweden)

    Rosmayati Mohemad

    2010-03-01

    Full Text Available The successful execution of a construction project is heavily impacted by making the right decision during tendering processes. Managing tender procedures is very complex and uncertain involving coordination of many tasks and individuals with different priorities and objectives. Bias and inconsistent decision are inevitable if the decision-making process is totally depends on intuition, subjective judgement or emotion. In making transparent decision and healthy competition tendering, there exists a need for flexible guidance tool for decision support. Aim of this paper is to give a review on current practices of Decision Support Systems (DSS technology in construction tendering processes. Current practices of general tendering processes as applied to the most countries in different regions such as United States, Europe, Middle East and Asia are comprehensively discussed. Applications of Web-based tendering processes is also summarised in terms of its properties. Besides that, a summary of Decision Support System (DSS components is included in the next section. Furthermore, prior researches on implementation of DSS approaches in tendering processes are discussed in details. Current issues arise from both of paper-based and Web-based tendering processes are outlined. Finally, conclusion is included at the end of this paper.

  16. Exclusive µ+Np topologies with ArgoNeuT

    Energy Technology Data Exchange (ETDEWEB)

    Partyka, Kinga [Physics Department, Yale University, New Haven, CT (United States)

    2015-05-15

    The Argon Neutrino Test, ArgoNeuT, is a small scale Liquid Argon Time Projection Chamber (LAr TPC) that is one step towards the construction of large scale LAr TPCs for long-baseline neutrino physics. LArTPCs provide bubble-chamber-like quality images for excellent particle ID and background rejection. Due to its superb capabilities it is well suited for topological analysis by reporting what it sees in a final state. Preliminary analysis of ArgoNeuT’s 0.1 to 10 GeV neutrino µ+Np topologies together with first ever study of proton multiplicities in neutrino-argon interactions was presented and compared with GENIE Monte Carlo generator.

  17. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2010-04-01 for the Global Argo Data Repository, date ranged from 2005-10-23 to 2010-04-07 (NODC Accession 0062992)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  18. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of May 2005 for the Global Argo Data Repository, 1996-01-05 to 2005-05-31 (NODC Accession 0002210)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  19. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-07-16 for the Global Argo Data Repository, date ranged from 2002-03-01 2009-07-22 (NODC Accession 0056186)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  20. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-09-07 for the Global Argo Data Repository, date ranged from 2003-04-28 to 2003-09-13 (NODC Accession 0001166)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  1. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of November 2006 for the Global Argo Data Repository, 1996-01-05 to 2006-12-01 (NODC Accession 0011212)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  2. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-12-10 for the Global Argo Data Repository, date ranged from 2002-12-08 to 2006-12-16 (NODC Accession 0011574)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  3. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-09-03 for the Global Argo Data Repository, date ranged from 1998-05-25 to 2006-09-09 (NODC Accession 0002834)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  4. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-06-08 for the Global Argo Data Repository, date ranged from 2003-05-26 to 2003-06-14 (NODC Accession 0001054)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  5. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2005-06-19 for the Global Argo Data Repository, date ranged from 2000-06-18 to 2005-06-25 (NODC Accession 0002257)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  6. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-03-12 for the Global Argo Data Repository, date ranged from 1998-12-08 to 2009-03-18 (NODC Accession 0002061)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  7. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2007-03-04 for the Global Argo Data Repository, date ranged from 2001-09-30 to 2007-03-10 (NODC Accession 0013875)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  8. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of January 2007 for the Global Argo Data Repository, 1996-01-05 to 2007-01-31 (NODC Accession 0013024)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  9. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-07-27 for the Global Argo Data Repository, date ranged from 2001-10-27 to 2003-08-02 (NODC Accession 0001117)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  10. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-08-20 for the Global Argo Data Repository, date ranged from 2001-09-30 to 2009-08-26 (NODC Accession 0057201)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  11. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-12-03 for the Global Argo Data Repository, date ranged from 1999-10-25 to 2006-12-09 (NODC Accession 0011263)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  12. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of June 2007 for the Global Argo Data Repository, 1996-01-05 to 2007-07-01 (NODC Accession 0020937)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  13. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2007-02-11 for the Global Argo Data Repository, date ranged from 2002-10-29 to 2007-02-17 (NODC Accession 0013200)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  14. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-12-24 for the Global Argo Data Repository, date ranged from 2002-02-15 to 2009-12-30 (NODC Accession 0060860)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  15. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-03-26 for the Global Argo Data Repository, date ranged from 1999-10-02 to 2009-04-01 (NODC Accession 0052543)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  16. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2007-10-14 for the Global Argo Data Repository, date ranged from 1995-09-07 to 2007-10-20 (NODC Accession 0035978)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR)as the long-term archive for the International Global Argo Project...

  17. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-06-01 for the Global Argo Data Repository, date ranged from 2001-10-18 to 2003-06-07 (NODC Accession 0001051)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  18. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-12-17 for the Global Argo Data Repository, date ranged from 2002-02-05 to 2009-12-23 (NODC Accession 0060676)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  19. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2008-01-06 for the Global Argo Data Repository, date ranged from 2002-12-13 to 2008-01-12 (NODC Accession 0038182)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR)as the long-term archive for the International Global Argo Project...

  20. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-10-19 for the Global Argo Data Repository, date ranged from 2003-06-08 to 2003-10-25 (NODC Accession 0001210)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  1. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2007-05-20 for the Global Argo Data Repository, date ranged from 2003-07-29 to 2007-05-26 (NODC Accession 0019205)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  2. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of October 2003 for the Global Argo Data Repository, 1996-01-05 to 2003-10-31 (NODC Accession 0001217)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  3. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2007-07-08 for the Global Argo Data Repository, date ranged from 2002-03-30 to 2007-07-14 (NODC Accession 0029182)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  4. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-07-02 for the Global Argo Data Repository, date ranged from 2001-07-30 to 2006-07-08 (NODC Accession 0002745)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  5. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2005-01-09 for the Global Argo Data Repository, 2000-03-01 to 2005-01-15 (NODC Accession 0001981)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  6. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of April 2006 for the Global Argo Data Repository, 1996-01-05 to 2006-04-30 (NODC Accession 0002655)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  7. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2010-07-08 for the Global Argo Data Repository, date ranged from 2005-01-19 to 2010-07-14 (NODC Accession 0065728)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository(GADR as the long-term archive for the International Global Argo Project...

  8. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-11-19 for the Global Argo Data Repository, date ranged from 2001-01-21 to 2006-11-25 (NODC Accession 0011021)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  9. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2008-05-29 for the Global Argo Data Repository, date ranged from 2006-03-01 to 2008-06-04 (NODC Accession 0042701)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR)as the long-term archive for the International Global Argo Project...

  10. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of June 2005 for the Global Argo Data Repository, 1996-01-05 to 2005-06-30 (NODC Accession 0002261)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  11. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2005-02-13 for the Global Argo Data Repository, 2001-04-10 to 2005-02-19 (NODC Accession 0002035)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  12. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-10-29 for the Global Argo Data Repository, date ranged from 2001-09-21 to 2009-11-04 (NODC Accession 0059252)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  13. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-03-05 for the Global Argo Data Repository, date ranged from 2002-04-02 to 2006-03-11 (NODC Accession 0002598)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  14. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-04-30 for the Global Argo Data Repository, date ranged from 2004-03-06 to 2009-05-06 (NODC Accession 0053667)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  15. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-01-08 for the Global Argo Data Repository, date ranged from 2001-06-14 to 2006-01-14 (NODC Accession 0002499)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  16. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of May 2007 for the Global Argo Data Repository, 1996-01-05 to 2007-06-01 (NODC Accession 0019350)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  17. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2010-02-18 for the Global Argo Data Repository, date ranged from 2001-09-30 to 2010-02-24 (NODC Accession 0062336)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  18. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2010-05-06 for the Global Argo Data Repository, date ranged from 2001-01-21 to 2010-05-12 (NODC Accession 0064275)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository(GADR as the long-term archive for the International Global Argo Project...

  19. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-04-23 for the Global Argo Data Repository, date ranged from 2001-11-07 to 2009-04-29 (NODC Accession 0053406)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  20. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-02-19 for the Global Argo Data Repository, date ranged from 1999-07-16 to 2009-02-25 (NODC Accession 0051511)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  1. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of February 2007 for the Global Argo Data Repository, 1996-01-05 to 2007-02-28 (NODC Accession 0013628)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  2. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-10-05 for the Global Argo Data Repository, date ranged from 2001-10-13 to 2003-10-11 (NODC Accession 0001198)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  3. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2010-01-14 for the Global Argo Data Repository, date ranged from 2003-02-20 to 2010-01-20 (NODC Accession 0061422)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  4. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2010-03-04 for the Global Argo Data Repository, date ranged from 2002-10-05 to 2010-03-10 (NODC Accession 0062620)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  5. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of October 2007 for the Global Argo Data Repository, 1995-09-07 to 2007-10-31 (NODC Accession 0036822)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  6. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-02-26 for the Global Argo Data Repository, date ranged from 2001-12-12 to 2006-03-04 (NODC Accession 0002591)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  7. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2004-09-12 for the Global Argo Data Repository, date ranged from 2004-01-12 to 2004-09-18 (NODC Accession 0001719)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  8. Temperature and Salinity profile data from globally distributed Argo profiling floats for the week of 2008-06-05 for the Global Argo Data Repository, date ranged from 2006-10-08 to 2008-06-11 (NODC Accession 0042829)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR)as the long-term archive for the International Global Argo Project...

  9. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2007-04-08 for the Global Argo Data Repository, date ranged from 2005-02-25 to 2007-04-14 (NODC Accession 0014769)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  10. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-08-13 for the Global Argo Data Repository, date ranged from 2002-03-12 to 2009-08-19 (NODC Accession 0057012)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  11. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-04-20 for the Global Argo Data Repository, date ranged from 2003-03-10 to 2003-04-26 (NODC Accession 0001001)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  12. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2004-07-18 for the Global Argo Data Repository, date ranged from 2003-09-26 to 2004-07-24 (NODC Accession 0001640)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  13. Temperature and Salinity profile data from globally distributed Argo profiling floats for the week of 2008-11-20 for the Global Argo Data Repository, date ranged from 2000-02-01 to 2008-11-26 (NODC Accession 0048970)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR as the long-term archive for the International Global Argo Project...

  14. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2008-02-24 for the Global Argo Data Repository, date ranged from 1979-05-15 to 2008-03-01 (NODC Accession 0039348)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR)as the long-term archive for the International Global Argo Project...

  15. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2004-05-02 for the Global Argo Data Repository, date ranged from 2000-11-22 to 2004-05-08 (NODC Accession 0001453)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  16. Temperature and salinity profile data from globally distributed Argo profiling floats for the month of February 2005 for the Global Argo Data Repository, 1996-01-05 to 2005-02-28 (NODC Accession 0002048)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  17. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-04-16 for the Global Argo Data Repository, date ranged from 2004-07-07 to 2009-04-22 (NODC Accession 0053405)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  18. Temperature and Salinity profile data from globally distributed Argo profiling floats for the week of 2008- 10-16 for the Global Argo Data Repository, date ranged from 1998-05-22 to 2008-10-22 (NODC Accession 0046744)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR)as the long-term archive for the International Global Argo Project...

  19. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2010-01-07 for the Global Argo Data Repository, date ranged from 2003-09-15 to 2010-01-13 (NODC Accession 0061249)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  20. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-08-13 for the Global Argo Data Repository, date ranged from 2000-10-31 to 2006-08-19 (NODC Accession 0002802)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  1. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2004-11-21 for the Global Argo Data Repository, date ranged from 2002-08-30 to 2004-11-27 (NODC Accession 0001911)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  2. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2007-11-11 for the Global Argo Data Repository, date ranged from 2002-01-11 to 2007-11-17 (NODC Accession 0036655)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR)as the long-term archive for the International Global Argo Project...

  3. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-05-28 for the Global Argo Data Repository, date ranged from 2002-02-05 to 2009-06-02 (NODC Accession 0054265)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  4. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2009-12-31 for the Global Argo Data Repository, date ranged from 2006-03-28 to 2010-01-06 (NODC Accession 0061041)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  5. Temperature and Salinity profile data from globally distributed Argo profiling floats for the week of 2008-07-10 for the Global Argo Data Repository, date ranged from 2007-12-18 to 2008-07-17 (NODC Accession 0043460)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR)as the long-term archive for the International Global Argo Project...

  6. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-04-09 for the Global Argo Data Repository, date ranged from 1998-02-23 to 2006-04-15 (NODC Accession 0002633)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  7. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-12-14 for the Global Argo Data Repository, date ranged from 2002-05-12 to 2003-12-20 (NODC Accession 0001272)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  8. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-01-29 for the Global Argo Data Repository, date ranged from 2001-06-03 to 2006-01-31 (NODC Accession 0002527)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  9. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-06-18 for the Global Argo Data Repository, date ranged from 2000-04-04 to 2006-06-24 (NODC Accession 0002726)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  10. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-02-05 for the Global Argo Data Repository, date ranged from 2003-10-22 to 2006-02-11 (NODC Accession 0002572)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  11. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-10-26 for the Global Argo Data Repository, date ranged from 2003-03-12 to 2003-11-01 (NODC Accession 0001216)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  12. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2003-07-13 for the Global Argo Data Repository, date ranged from 2002-02-17 to 2003-07-19 (NODC Accession 0001103)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  13. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2007-11-25 for the Global Argo Data Repository, date ranged from 2000-05-10 to 2007-12-01 (NODC Accession 0036984)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR)as the long-term archive for the International Global Argo Project...

  14. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2010-05-13 for the Global Argo Data Repository, date ranged from 2001-01-21 to 2010-05-19 (NODC Accession 0064383)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository(GADR as the long-term archive for the International Global Argo Project...

  15. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-10-15 for the Global Argo Data Repository, date ranged from 2006-03-26 to 2006-10-21 (NODC Accession 0010542)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  16. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2004-04-04 for the Global Argo Data Repository, date ranged from 2000-11-22 to 2004-04-10 (NODC Accession 0001422)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  17. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2005-10-02 for the Global Argo Data Repository, date ranged from 2000-12-08 to 2005-10-08 (NODC Accession 0002398)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  18. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2006-04-30 for the Global Argo Data Repository, date ranged from 2002-03-08 to 2006-05-06 (NODC Accession 0002664)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  19. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2004-03-28 for the Global Argo Data Repository, date ranged from 2004-02-29 to 2004-04-03 (NODC Accession 0001411)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  20. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2010-06-10 for the Global Argo Data Repository, date ranged from 2004-06-08 to 2010-06-16 (NODC Accession 0065228)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository(GADR as the long-term archive for the International Global Argo Project...

  1. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2005-11-06 for the Global Argo Data Repository, date ranged from 2001-10-13 to 2005-11-12 (NODC Accession 0002455)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  2. Temperature and salinity profile data from globally distributed Argo profiling floats for the week of 2007-03-18 for the Global Argo Data Repository, date ranged from 2004-01-28 to 2007-03-24 (NODC Accession 0014265)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo...

  3. Overview of the ARGOS X-ray framing camera for Laser MegaJoule

    Energy Technology Data Exchange (ETDEWEB)

    Trosseille, C., E-mail: clement.trosseille@cea.fr; Aubert, D.; Auger, L.; Bazzoli, S.; Brunel, P.; Burillo, M.; Chollet, C.; Jasmin, S.; Maruenda, P.; Moreau, I.; Oudot, G.; Raimbourg, J.; Soullié, G.; Stemmler, P.; Zuber, C. [CEA, DAM, DIF, F-91297 Arpajon (France); Beck, T. [CEA, DEN, CADARACHE, F-13108 St Paul lez Durance (France); Gazave, J. [CEA, DAM, CESTA, F-33116 Le Barp (France)

    2014-11-15

    Commissariat à l’Énergie Atomique et aux Énergies Alternatives has developed the ARGOS X-ray framing camera to perform two-dimensional, high-timing resolution imaging of an imploding target on the French high-power laser facility Laser MegaJoule. The main features of this camera are: a microchannel plate gated X-ray detector, a spring-loaded CCD camera that maintains proximity focus in any orientation, and electronics packages that provide remotely-selectable high-voltages to modify the exposure-time of the camera. These components are integrated into an “air-box” that protects them from the harsh environmental conditions. A miniaturized X-ray generator is also part of the device for in situ self-testing purposes.

  4. ARGOS-NT: A computer based emergency management system

    International Nuclear Information System (INIS)

    In case of a nuclear accident or a threat of a release the Danish Emergency Management Agency is responsible for actions to minimize the consequences in Danish territory. To provide an overview of the situation, a computer based system called ARGOS-NT has been developed in 1993/94. This paper gives an overview of the system with emphasis on the prognostic part of the system. An example calculation shows the importance of correct landscape modeling. (author)

  5. ARGOS-ORPHEUS system for remote exploration of hazardous environment

    Czech Academy of Sciences Publication Activity Database

    Žalud, L.; Matoušek, Rudolf

    Praha: WSEAS, 2005 - (Srovnal, V.; Mastorakis, N.), s. 10-15 ISBN 960-8457-12-2. [Automatic Control Modelling and Simulation. ACMOS 05 /7./. Praha (CZ), 13.03.2005-15.03.2005] R&D Projects: GA AV ČR(CZ) 1ET100750408 Institutional research plan: CEZ:AV0Z10750506 Keywords : robot * reconnaissance * Orpheus * ARGOS * mobile Subject RIV: JD - Computer Applications, Robot ics

  6. An ensemble adjustment Kalman filter study for Argo data

    Science.gov (United States)

    Yin, Xunqiang; Qiao, Fangli; Yang, Yongzeng; Xia, Changshui

    2010-05-01

    An ensemble adjustment Kalman filter system is developed to assimilate Argo profiles into the Northwest Pacific MASNUM wave-circulation coupled model, which is based on the Princeton Ocean Model (POM). This model was recoded in FORTRAN-90 style, and some new data types were defined to improve the efficiency of system design and execution. This system is arranged for parallel computing by using UNIX shell scripts: it is easier with single models running separately with the required information exchanged through input/output files. Tests are carried out to check the performance of the system: one for checking the ensemble spread and another for the performance of assimilation of the Argo data in 2005. The first experiment shows that the assimilation system performs well. The comparison with the Satellite derived sea surface temperature (SST) shows that modeled SST errors are reduced after assimilation; at the same time, the spatial correlation between the simulated SST anomalies and the satellite data is improved because of Argo assimilation. Furthermore, the temporal evolution/trend of SST becomes much better than those results without data assimilation. The comparison against GTSPP profiles shows that the improvement is not only in the upper layers of ocean, but also in the deeper layers. All these results suggest that this system is potentially capable of reconstructing oceanic data sets that are of high quality and are temporally and spatially continuous.

  7. Argos at NRPA - added value and major challenges

    International Nuclear Information System (INIS)

    Full text: The national emergency response organization with the Crisis Committee for Nuclear Accidents, their advisors and their information group will gather at NRPA in case of a nuclear or radiological accident. Prognoses and actual measurements presented through a decision support system are regarded being of major importance as a basis for the decision making. ARGOS presents predictions of several quantities that are likely to be of interest to decision makers during and alter an accident, such as air concentration, deposition, effective dose and foodstuff activity. It is expected that ARGOS will be an important tool for the decision makers in case of an accident at a foreign nuclear power plant, at one of the two research reactors in Norway or in case of a nuclear accident in a nuclear powered vessel. Information from meteorological forecasts and atmospheric dispersion models will be of key importance in case of such an accident. Therefore, the main emphasis in the implementation process so far has been on the integration between ARGOS and the long-range dispersion model, SNAP, used at the Norwegian Meteorological Institute. A new technical solution represents an improvement of the existing arrangement within the Norwegian emergency preparedness organization, and facilitates presentation of dose calculations based on numerical weather prediction data in a clear and intuitive manner. ARGOS also represents an improved and more centralized approach to data handling and data processing within the Norwegian nuclear emergency response organization. This is due mainly to its quality as a central repository for different types of measurement data. The data of interest are produced for example by mobile ground- or air-based measuring teams (civilian or military), by measuring stations within the automatic monitoring network or by laboratory analysis of air samples or environmental- and food samples. The ability to graphically present such measuring data together with

  8. Artificial Intelligence (AI), Operations Research (OR), and Decision Support Systems (DSS): A conceptual framework

    Science.gov (United States)

    Parnell, Gregory S.; Rowell, William F.; Valusek, John R.

    1987-01-01

    In recent years there has been increasing interest in applying the computer based problem solving techniques of Artificial Intelligence (AI), Operations Research (OR), and Decision Support Systems (DSS) to analyze extremely complex problems. A conceptual framework is developed for successfully integrating these three techniques. First, the fields of AI, OR, and DSS are defined and the relationships among the three fields are explored. Next, a comprehensive adaptive design methodology for AI and OR modeling within the context of a DSS is described. These observations are made: (1) the solution of extremely complex knowledge problems with ill-defined, changing requirements can benefit greatly from the use of the adaptive design process, (2) the field of DSS provides the focus on the decision making process essential for tailoring solutions to these complex problems, (3) the characteristics of AI, OR, and DSS tools appears to be converging rapidly, and (4) there is a growing need for an interdisciplinary AI/OR/DSS education.

  9. To Make Good Decision: A Group DSS for Multiple Criteria Alternative Rank and Selection

    OpenAIRE

    2015-01-01

    Decision making is a recursive process and usually involves multiple decision criteria. However, such multiple criteria decision making may have a problem in which partial decision criteria may conflict with each other. An information technology, such as the decision support system (DSS) and group DSS (GDSS), emerges to assist decision maker for decision-making process. Both the DSS and GDSS should integrate with a symmetrical approach to assist decision maker to take all decision criteria in...

  10. Lactobacillus fermentum BR11, a potential new probiotic, alleviates symptoms of colitis induced by dextran sulfate sodium (DSS) in rats.

    Science.gov (United States)

    Geier, Mark S; Butler, Ross N; Giffard, Philip M; Howarth, Gordon S

    2007-03-20

    Current treatments for inflammatory bowel disease (IBD) are relatively ineffective. Recently, probiotics have emerged as a potential treatment modality for numerous gastrointestinal disorders, including IBD. Few probiotics, however, have undergone appropriate preclinical screening in vivo. The current study compared the effects of four candidate probiotics on development of dextran sulfate sodium (DSS)-induced colitis in rats. Sprague Dawley rats were gavaged 1 mL of the potential probiotic (1 x 10(10) CFU/mL), or vehicle, twice daily for 14 days. Strains tested were Lactobacillus rhamnosus GG (LGG), Streptococcus thermophilus TH-4 (TH-4), Bifidobacterium lactis Bb12 (Bb12) and Lactobacillus fermentum BR11 (BR11). Colitis was induced from day 7 to 14 via administration of 2% DSS in drinking water. Disease activity index (DAI) was monitored daily until rats were killed at day 14. DAI decreased in DSS+Bb12 and DSS+BR11 compared to DSS+Vehicle. Colon length increased in DSS+BR11 (10%) and DSS+LGG (10%) compared to DSS+Vehicle. DSS+Bb12 and DSS+BR11 prevented the distal colon crypt hyperplasia evident in DSS+Vehicle, DSS+LGG and DSS+TH-4. BR11 was most effective at reducing colitic symptoms. Bb12 had minimal effects, whilst TH-4 did not prevent DSS-colitis and LGG actually exacerbated some indicators of colitis. Further studies into the potential benefits of L. fermentum BR11 are indicated. PMID:17150273

  11. Decision Support Systems (DSS) in Construction Tendering Processes

    CERN Document Server

    Mohemad, Rosmayati; Othman, Zulaiha Ali; Noor, Noor Maizura Mohamad

    2010-01-01

    The successful execution of a construction project is heavily impacted by making the right decision during tendering processes. Managing tender procedures is very complex and uncertain involving coordination of many tasks and individuals with different priorities and objectives. Bias and inconsistent decision are inevitable if the decision-making process is totally depends on intuition, subjective judgement or emotion. In making transparent decision and healthy competition tendering, there exists a need for flexible guidance tool for decision support. Aim of this paper is to give a review on current practices of Decision Support Systems (DSS) technology in construction tendering processes. Current practices of general tendering processes as applied to the most countries in different regions such as United States, Europe, Middle East and Asia are comprehensively discussed. Applications of Web-based tendering processes is also summarised in terms of its properties. Besides that, a summary of Decision Support Sy...

  12. Strength advance design of boiler components for DSS operation

    Energy Technology Data Exchange (ETDEWEB)

    Shimada, Tsuyoshi; Tsuta, Toshio; Yamaji, Seiichi; Miyoshi, Teiichi (Kawasaki Heavy Industries Ltd., Kobe, (Japan))

    1989-08-20

    The thermal power plants in the future are expected to operate under such medium loads as LNG, petroleum and coal burning. As a result, frequent start-ups at night (DSS operation) and week-end stops (WSS operation), etc. are conducted: sliding pressure operation system is adopted to reduce the thermal stress at the turbine and to improve the plant efficiency at partial load operation; this causes a rapid temperture change which gives rise to big thermal stress at various points of the boiler causing wide fatigue damage at the center of the stress. Simultneously, the creep damage at high temperature progresses by time. In order to attain sufficient life for the planned operation mode at the design of various boiler points, improvements have been conducted at internal bore edge of a thick cylinder, shape of the fin end piece, furnace/horizontal flue corner part and the attached metal pieces for enhancing the reliability. 1 ref., 9 figs., 1 tab.

  13. Analyses of altimetry errors using Argo and GRACE data

    Science.gov (United States)

    Legeais, Jean-François; Prandi, Pierre; Guinehut, Stéphanie

    2016-05-01

    This study presents the evaluation of the performances of satellite altimeter missions by comparing the altimeter sea surface heights with in situ dynamic heights derived from vertical temperature and salinity profiles measured by Argo floats. The two objectives of this approach are the detection of altimeter drift and the estimation of the impact of new altimeter standards that requires an independent reference. This external assessment method contributes to altimeter calibration-validation analyses that cover a wide range of activities. Among them, several examples are given to illustrate the usefulness of this approach, separating the analyses of the long-term evolution of the mean sea level and its variability, at global and regional scales and results obtained via relative and absolute comparisons. The latter requires the use of the ocean mass contribution to the sea level derived from Gravity Recovery and Climate Experiment (GRACE) measurements. Our analyses cover the estimation of the global mean sea level trend, the validation of multi-missions altimeter products as well as the assessment of orbit solutions.Even if this approach contributes to the altimeter quality assessment, the differences between two versions of altimeter standards are getting smaller and smaller and it is thus more difficult to detect their impact. It is therefore essential to characterize the errors of the method, which is illustrated with the results of sensitivity analyses to different parameters. This includes the format of the altimeter data, the method of collocation, the temporal reference period and the processing of the ocean mass solutions from GRACE. We also assess the impact of the temporal and spatial sampling of Argo floats, the choice of the reference depth of the in situ profiles and the importance of the deep steric contribution. These analyses provide an estimation of the robustness of the method and the characterization of associated errors. The results also allow us

  14. Near-Real Time Monthly Global Temperature and Salinity Gridded Data from New Ocean Exploration by Argo Floats

    Science.gov (United States)

    Chu, P. C.; Sun, L.; Fan, C.

    2010-12-01

    New ocean exploration by Argo floats provides sufficient spatial and temporal coverage for sampling the global ocean temperature and salinity. Currently, there are 3193 Argo floats all over the world oceans. Combined with traditionally sampled data, they are included into the Global Temperature and Salinity Profile Program (GTSPP). To fully understanding the variability in ocean thermohaline structure and then its effects on climate variability needs a sufficient resolution in space and, especially, in time, gridded ocean temperature and salinity (T, S) dataset. We analyzed observational profiles (from Argo and traditional technologies) from the GTSPP and produced a T-S data set to meet the above need. GTSPP is a joint programme of the International Oceanographic Data and Information Exchange committee (IODE) and the Joint Commission on Oceanography and Marine Meteorology (JCOMM). IODE and JCOMM are technical committees of the Intergovernmental Oceanographic Commission and the World Meteorological Organization. The quality control procedures used in GTSPP were developed by the Marine Environmental Data Service (MEDS), now the Integrated Science Data Management (ISDM), of Canada. The GTSPP handles all temperature and salinity profile data. This includes observations collected using water samplers, continuous profiling instruments such as Argo, CTDs, thermistor chain data and observations acquired using thermosalinographs. These data will reach data processing centres of the Program through the real-time channels of the IGOSS program or in delayed mode through the IODE system. Real-time data in GTSPP are acquired from the Global Telecommunications System in the bathythermal (BATHY) and temperature, salinity & current (TESAC) codes forms supported by the WMO. Delayed mode data are contributed directly by member states of IOC. Any variable (temperature, salinity, or velocity) can be decomposed into generalized Fourier series using the recently developed optimal

  15. Decision Support System Research and Development Network for Agricultural and Natural Resource Management in Thailand: A TRF-DSS Experience

    OpenAIRE

    Thaworn Onpraphai; Methi Ekasingh; Phrek Gypmantasiri; Benchaphun Ekasingh; Chada Narongrit; Daroonwan Kamthonkiat; Honda Kiyoshi; Vinai Sarawat; Sukit Ratanasriwong; Panjai Tantassanawong; Surat Lertlum; Ang Choulean; Im, Sokrithy; Pongdhan Sampaongen; Suwit Laohasiriwong

    2012-01-01

    This paper aims to introduce the Decision Support System (DSS), which is an area informatics approach to area studies, and the research network complex based on DSS’s application in Thailand. In particular, the paper presents and discusses current activities of the DSS research network at the national level in Thailand rather than being a theoretical and analytical study of the DSS mechanism or its cases. DSS has wide applications in Thailand, extending to various fields such as agricultural ...

  16. Service-oriented architecture for the ARGOS instrument control software

    Science.gov (United States)

    Borelli, J.; Barl, L.; Gässler, W.; Kulas, M.; Rabien, Sebastian

    2012-09-01

    The Advanced Rayleigh Guided ground layer Adaptive optic System, ARGOS, equips the Large Binocular Telescope (LBT) with a constellation of six rayleigh laser guide stars. By correcting atmospheric turbulence near the ground, the system is designed to increase the image quality of the multi-object spectrograph LUCIFER approximately by a factor of 3 over a field of 4 arc minute diameter. The control software has the critical task of orchestrating several devices, instruments, and high level services, including the already existing adaptive optic system and the telescope control software. All these components are widely distributed over the telescope, adding more complexity to the system design. The approach used by the ARGOS engineers is to write loosely coupled and distributed services under the control of different ownership systems, providing a uniform mechanism to offer, discover, interact and use these distributed capabilities. The control system counts with several finite state machines, vibration and flexure compensation loops, and safety mechanism, such as interlocks, aircraft, and satellite avoidance systems.

  17. Laboratory characterization of the ARGOS laser wavefront sensor

    Science.gov (United States)

    Bonaglia, Marco; Busoni, Lorenzo; Carbonaro, Luca; Quiròs Pacheco, Fernando; Xompero, Marco; Esposito, Simone; Orban de Xivry, Gilles; Rabien, Sebastian

    2012-07-01

    In this paper we present the integration status of the ARGOS wavefront sensor and the results of the closed loop tests performed in laboratory. ARGOS is the laser guide star adaptive optics system of the Large Binocular Telescope. It is designed to implement a Ground Layer Adaptive Optics correction for LUCI, an infrared imaging camera and multi-object spectrograph, using 3 pulsed Rayleigh beacons focused at 12km altitude. The WFS is configured as a Shack-Hartman sensor having a 15 x 15 subaspertures over the telescope pupil. In the WFS each LGS is independently stabilized for on-sky jitter and range-gated to reduce spot elongation. The 3 LGS are arranged on a single lenslet array and detector by the use of off-axis optics in the final part of the WFS. The units of WFS are in the integration and testing phase at Arcetri Observatory premises. We describe here the test aimed to demonstrate the functionality of the WFS in an adaptive optics closed loop performed using the internal light sources of the WFS and a MEMS deformable mirror.

  18. Fifteen years of ocean observations with the global Argo array

    Science.gov (United States)

    Riser, Stephen C.; Freeland, Howard J.; Roemmich, Dean; Wijffels, Susan; Troisi, Ariel; Belbéoch, Mathieu; Gilbert, Denis; Xu, Jianping; Pouliquen, Sylvie; Thresher, Ann; Le Traon, Pierre-Yves; Maze, Guillaume; Klein, Birgit; Ravichandran, M.; Grant, Fiona; Poulain, Pierre-Marie; Suga, Toshio; Lim, Byunghwan; Sterl, Andreas; Sutton, Philip; Mork, Kjell-Arne; Vélez-Belchí, Pedro Joaquín; Ansorge, Isabelle; King, Brian; Turton, Jon; Baringer, Molly; Jayne, Steven R.

    2016-02-01

    More than 90% of the heat energy accumulation in the climate system between 1971 and the present has been in the ocean. Thus, the ocean plays a crucial role in determining the climate of the planet. Observing the oceans is problematic even under the most favourable of conditions. Historically, shipboard ocean sampling has left vast expanses, particularly in the Southern Ocean, unobserved for long periods of time. Within the past 15 years, with the advent of the global Argo array of profiling floats, it has become possible to sample the upper 2,000 m of the ocean globally and uniformly in space and time. The primary goal of Argo is to create a systematic global network of profiling floats that can be integrated with other elements of the Global Ocean Observing System. The network provides freely available temperature and salinity data from the upper 2,000 m of the ocean with global coverage. The data are available within 24 hours of collection for use in a broad range of applications that focus on examining climate-relevant variability on seasonal to decadal timescales, multidecadal climate change, improved initialization of coupled ocean-atmosphere climate models and constraining ocean analysis and forecasting systems.

  19. How essential are Argo observations to constrain a global ocean data assimilation system?

    Science.gov (United States)

    Turpin, V.; Remy, E.; Le Traon, P. Y.

    2016-02-01

    Observing system experiments (OSEs) are carried out over a 1-year period to quantify the impact of Argo observations on the Mercator Ocean 0.25° global ocean analysis and forecasting system. The reference simulation assimilates sea surface temperature (SST), SSALTO/DUACS (Segment Sol multi-missions dALTimetrie, d'orbitographie et de localisation précise/Data unification and Altimeter combination system) altimeter data and Argo and other in situ observations from the Coriolis data center. Two other simulations are carried out where all Argo and half of the Argo data are withheld. Assimilating Argo observations has a significant impact on analyzed and forecast temperature and salinity fields at different depths. Without Argo data assimilation, large errors occur in analyzed fields as estimated from the differences when compared with in situ observations. For example, in the 0-300 m layer RMS (root mean square) differences between analyzed fields and observations reach 0.25 psu and 1.25 °C in the western boundary currents and 0.1 psu and 0.75 °C in the open ocean. The impact of the Argo data in reducing observation-model forecast differences is also significant from the surface down to a depth of 2000 m. Differences between in situ observations and forecast fields are thus reduced by 20 % in the upper layers and by up to 40 % at a depth of 2000 m when Argo data are assimilated. At depth, the most impacted regions in the global ocean are the Mediterranean outflow, the Gulf Stream region and the Labrador Sea. A significant degradation can be observed when only half of the data are assimilated. Therefore, Argo observations matter to constrain the model solution, even for an eddy-permitting model configuration. The impact of the Argo floats' data assimilation on other model variables is briefly assessed: the improvement of the fit to Argo profiles do not lead globally to unphysical corrections on the sea surface temperature and sea surface height. The main conclusion

  20. Exploring the development of a decision support system (DSS) to prioritize engineered nanoparticles for risk assessment

    International Nuclear Information System (INIS)

    Engineered nanoparticles (ENPs) have gained huge commercial interest because of their unique and size-related physicochemical properties. The diversity and complexity of ENPs is increasing with the introduction of next generation nanoparticles. The current approaches are not able to assess the safety of all types and applications of ENPs. Therefore, we are developing a decision support system (DSS) that helps to identify those ENPs and applications that should get priority in the risk assessment. This DSS smartly uses existing knowledge in publicly available databases. With the aid of vocabularies, knowledge rules and logic reasoning new knowledge will be derived. In this paper, the procedure for a DSS is described. Since this system is open by design, others can re-use and extend the DSS content, and newly developed DSS tools can be easily accommodated, which will make the DSS more effective over the years. Data of newly emerging studies will be used for the validation of the DSS. The results will benefit regulating authorities and scientists focussing on the development of inherently safe ENPs

  1. E-Procurement System with Embedded Supplier Selection DSS for an Automobile Manufacturing Industry

    Directory of Open Access Journals (Sweden)

    P.Priya

    2012-05-01

    Full Text Available This paper presents the development of Decision Support System (DSS to enable the selection of best suppliers in an e-procurement process. The model base of the DSS incorporates the Online Analytical Processing (OLAP and Analytic Hierarchy Process (AHP techniques to shortlist and selects the best suppliers in a web environment. The e-DSS process is implemented using ASP and SQL server, for an Indian automobile manufacturing industry. The results obtained for supplier selection is competitive in terms of the quality and lead time of the chosen suppliers

  2. A comparison of Argo nominal surface and near-surface temperature for validation of AMSR-E SST

    Science.gov (United States)

    Liu, Zenghong; Chen, Xingrong; Sun, Chaohui; Wu, Xiaofen; Lu, Shaolei

    2016-06-01

    Satellite SST (sea surface temperature) from the Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E) is compared with in situ temperature observations from Argo profiling floats over the global oceans to evaluate the advantages of Argo NST (near-surface temperature: water temperature less than 1 m from the surface). By comparing Argo nominal surface temperature (~5 m) with its NST, a diurnal cycle caused by daytime warming and nighttime cooling was found, along with a maximum warming of 0.08±0.36°C during 14:00-15:00 local time. Further comparisons between Argo 5-m temperature/Argo NST and AMSR-E SST retrievals related to wind speed, columnar water vapor, and columnar cloud water indicate warming biases at low wind speed (vapor >28 mm during daytime. The warming tendency is more remarkable for AMSR-E SST/Argo 5-m temperature compared with AMSR-E SST/Argo NST, owing to the effect of diurnal warming. This effect of diurnal warming events should be excluded before validation for microwave SST retrievals. Both AMSR-E nighttime SST/Argo 5-m temperature and nighttime SST/Argo NST show generally good agreement, independent of wind speed and columnar water vapor. From our analysis, Argo NST data demonstrated their advantages for validation of satellite-retrieved SST.

  3. Quality Control of ARGO Data Based on Climatological T-S Models

    Institute of Scientific and Technical Information of China (English)

    纪风颖; 林绍花

    2004-01-01

    By implementing the ARGO program, a large number of T-S profiles can be observed in the world ocean. However, it is very difficult to examine changes of the sensitivity of the sensors equipped at the ARGO floats, because it is difficult to understand their condition in the sea and the reliability of the data. Quality control must be done in order to avoid the wrong conclusion deduced from the wrong data.One of the realistic methods for quality control of the ARGO data is the comparison with the local climatology. High quality climatological T-S models in northwest Pacific have been built based on the Nansen bottle data and CTD data for the quality control in NMDIS. The models are used to check the ARGO data in this area and have got good result.

  4. The ARGOS contribution to the successful dredging of a deep moored current meter

    Science.gov (United States)

    Gonella, J.; Ollivier, B.

    Current meters moored at 1200 m from a seabed 4600 m deep in the Indian Ocean were recovered using the ARGOS system after failure of the explosive anchor-release bolts prevented recovery using acoustic methods. The position of each mooring was known to within 0.25 nautical miles, so the ARGOS system was used to position the recovery ships to within 100 m of the targets.

  5. Using ARGO, GRACE and altimetry to assess the quasi stationary circulation in the North Atlantic

    OpenAIRE

    Richter, Falk; Sidorenko, Dmitry; Danilov, Sergey; Schröter, Jens

    2009-01-01

    The data available from Argo profiling buoys and satellite altimetry are combined into Inverse Finite Element Ocean model (IFEOM) for each of the years 2005 and 2006. The model solves for temperature and salinity fields that are close to measurements, respects quasi-stationary dynamical balances, and simultaneously produces estimates of the circulation. Several experiments have been performed to reconstruct the interannual variability. The assimilation of Argo data alone produces qualitative ...

  6. Design of Multidimensional Database (MBD) for DSS in Problems of Environmental Management

    OpenAIRE

    Yuriy I. Dreizis; Irina V. Grigoryan; Vladimir V. Kovalenko

    2012-01-01

    This article describes the basic tasks necessary for the development of a multi-dimensional database of DSS-system for decision support in the management of state natural resources of the coastal region using OLAP-technologies.

  7. Hints on nuclear effects from ArgoNeuT data

    Energy Technology Data Exchange (ETDEWEB)

    Palamara, Ornella [Yale University, Physics Department, New Haven, CT, USA and INFN, Laboratori Nazionali del Gran Sasso, Assergi (Italy)

    2015-05-15

    Initial results from a topological analysis of CC “0 pion” muon neutrino events in LAr collected by the ArgoNeuT experiment on the NuMI LE beam at Fermilab (in the few GeV energy region) are presented and compared with predictions from MC simulations. A new analysis method, based on the reconstruction of exclusive topologies, fully exploiting the LArTPC technique capabilities, is used to analyze the events and study nuclear effects in neutrino interactions on Argon nuclei. Multiple protons accompanying the leading muon and the presence of vertex activity are clearly visible (and measured) in the events. Ratios among rates of different exclusive topologies provide indications of the size of nuclear effects in neutrino-nucleus interactions in LAr.

  8. Multiple shell shower fronts in EAS with ARGO-YBJ

    Directory of Open Access Journals (Sweden)

    Marsella G.

    2015-01-01

    Full Text Available The ARGO-YBJ experiment is an Extensive Air Shower array that has been operated at the high altitude Yangbajing Cosmic Ray Laboratory (Tibet, P.R. China 4300 m a.s.l. in its final configuration since December 2007 until February 2013. The detector consists of a dense layer of Resistive Plate Counters (RPCs covering an area of about 11000 m2. It has been designed to measure the temporal and spatial structure of Extensive Air Showers (EAS with high space-time resolution. The detector gives a quite highly detailed picture of shower footprints at ground. It is perfectly suitable to understand the EAS morphology. These detector characteristics have been used for seeking particles of large rest mass produced in cosmic rays by measuring the Multiple Shell Shower Fronts relative delays. The technique and preliminary results will be illustrated in the present work.

  9. Land use planning in Ahar area (Iran) using MicroLEIS DSS

    OpenAIRE

    Oustan, S.; M. Neyshaboury; F. SARMADIAN; A. Jafarzadeh; M. Anaya-Romero; de la Rosa, D; F Shahbazi

    2008-01-01

    The decision support system, MicroLEIS DSS, was applied to evaluate the land use planning in Ahar area, East Azarbaijan. In this way 6 agro-ecological land evaluation models constituents of this DSS software were selected in order to make strategies related to land evaluation at a regional level, such as segregation of agricultural lands, restoration of marginal areas, diversification of crop rotation, and identification of vulnerability areas. Results obtained from each evaluation models are...

  10. Consistency of Aquarius sea surface salinity with Argo products on various spatial and temporal scales

    Science.gov (United States)

    Lee, Tong

    2016-04-01

    Understanding the accuracies of satellite-derived sea surface salinity measurements in depicting temporal changes and their dependence on spatiotemporal scales is important to applications, capability assessment, and future satellite mission design. This study quantifies the consistency between Aquarius Version 4 monthly gridded sea surface salinity (SSS) with two Argo-based monthly gridded near-surface salinity products for describing temporal changes on 1° × 1°, 3° × 3°, and 10° × 10° scales. Globally averaged standard deviation values for Aquarius-Argo salinity differences on these three spatial scales are 0.16, 0.14, and 0.09 practical salinity unit (psu), compared to those between the two Argo products of 0.10, 0.09, and 0.04 psu. The consistency between Aquarius and Argo is similar to that between the two Argo products in the tropics for seasonal signals, and in the tropics and midlatitudes for nonseasonal signals. Therefore, the uncertainties of Argo products for various scales need to be considered in evaluating satellite SSS. Innovative satellite technologies are needed to improve high-latitude satellite SSS measurements.

  11. DECISIONS, METHODS AND TECHNIQUES RELATED TO DECISION SUPPORT SYSTEMS (DSS

    Directory of Open Access Journals (Sweden)

    Boghean Florin

    2015-07-01

    Full Text Available Generalised uncertainty, a phenomenon that today’s managers are facing as part of their professional experience, makes it impossible to anticipate the way the business environment will evolve or what will be the consequences of the decisions they plan to implement. Any decision making process within the company entails the simultaneous presence of a number of economic, technical, juridical, human and managerial variables. The development and the approval of a decision is the result of decision making activities developed by the decision maker and sometimes by a decision support team or/and a decision support system (DSS. These aspects related to specific applications of decision support systems in risk management will be approached in this research paper. Decisions in general and management decisions in particular are associated with numerous risks, due to their complexity and increasing contextual orientation. In each business entity, there are concerns with the implementation of risk management in order to improve the likelihood of meeting objectives, the trust of the parties involved, increase the operational safety and security as well as the protection of the environment, minimise losses, improve organisational resilience in order to diminish the negative impact on the organisation and provide a solid foundation for decision making. Since any business entity is considered to be a wealth generator, the analysis of their performance should not be restricted to financial efficiency alone, but will also encompass their economic efficiency as well. The type of research developed in this paper entails different dimensions: conceptual, methodological, as well as empirical testing. Subsequently, the conducted research entails a methodological side, since the conducted activities have resulted in the presentation of a simulation model that is useful in decision making processes on the capital market. The research conducted in the present paper

  12. A novel roseobacter phage possesses features of podoviruses, siphoviruses, prophages and gene transfer agents

    Science.gov (United States)

    Zhan, Yuanchao; Huang, Sijun; Voget, Sonja; Simon, Meinhard; Chen, Feng

    2016-07-01

    Bacteria in the Roseobacter lineage have been studied extensively due to their significant biogeochemical roles in the marine ecosystem. However, our knowledge on bacteriophage which infects the Roseobacter clade is still very limited. Here, we report a new bacteriophage, phage DSS3Φ8, which infects marine roseobacter Ruegeria pomeroyi DSS-3. DSS3Φ8 is a lytic siphovirus. Genomic analysis showed that DSS3Φ8 is most closely related to a group of siphoviruses, CbK-like phages, which infect freshwater bacterium Caulobacter crescentus. DSS3Φ8 contains a smaller capsid and has a reduced genome size (146 kb) compared to the CbK-like phages (205–279 kb). DSS3Φ8 contains the DNA polymerase gene which is closely related to T7-like podoviruses. DSS3Φ8 also contains the integrase and repressor genes, indicating its potential to involve in lysogenic cycle. In addition, four GTA (gene transfer agent) genes were identified in the DSS3Φ8 genome. Genomic analysis suggests that DSS3Φ8 is a highly mosaic phage that inherits the genetic features from siphoviruses, podoviruses, prophages and GTAs. This is the first report of CbK-like phages infecting marine bacteria. We believe phage isolation is still a powerful tool that can lead to discovery of new phages and help interpret the overwhelming unknown sequences in the viral metagenomics.

  13. A novel roseobacter phage possesses features of podoviruses, siphoviruses, prophages and gene transfer agents.

    Science.gov (United States)

    Zhan, Yuanchao; Huang, Sijun; Voget, Sonja; Simon, Meinhard; Chen, Feng

    2016-01-01

    Bacteria in the Roseobacter lineage have been studied extensively due to their significant biogeochemical roles in the marine ecosystem. However, our knowledge on bacteriophage which infects the Roseobacter clade is still very limited. Here, we report a new bacteriophage, phage DSS3Φ8, which infects marine roseobacter Ruegeria pomeroyi DSS-3. DSS3Φ8 is a lytic siphovirus. Genomic analysis showed that DSS3Φ8 is most closely related to a group of siphoviruses, CbK-like phages, which infect freshwater bacterium Caulobacter crescentus. DSS3Φ8 contains a smaller capsid and has a reduced genome size (146 kb) compared to the CbK-like phages (205-279 kb). DSS3Φ8 contains the DNA polymerase gene which is closely related to T7-like podoviruses. DSS3Φ8 also contains the integrase and repressor genes, indicating its potential to involve in lysogenic cycle. In addition, four GTA (gene transfer agent) genes were identified in the DSS3Φ8 genome. Genomic analysis suggests that DSS3Φ8 is a highly mosaic phage that inherits the genetic features from siphoviruses, podoviruses, prophages and GTAs. This is the first report of CbK-like phages infecting marine bacteria. We believe phage isolation is still a powerful tool that can lead to discovery of new phages and help interpret the overwhelming unknown sequences in the viral metagenomics. PMID:27460944

  14. ARGO-YBJ:丰富多彩的宇宙线观测%ARGO-YBJ: Fruitful Cosmic Ray Observations

    Institute of Scientific and Technical Information of China (English)

    曹臻

    2012-01-01

    Being smoothly operated for 5 years, the ARGO-YBJ experiment collected 0.4 trillion cosmic ray event samples. Many scientific goals have been achieved based on the very important data base. Here in this article, we summarize all major contributions to cosmic ray related researches, including conventional measurements such as cosmic ray energy spectrum, composition and anisotropy. The researches also cover many non-traditional topics such as the monitoring of solar activity using Galactic cosmic rays, forecasting large geomagnetic storms induced by huge flares of the sun, exploring the correlation between thunderstorms and extensives air shower of cosmic rays and so forth. With the progresses of the future experiment LHAASO, all researches reported in this paper will be greatly enhanced using the most sensitive new generation apparatus. Breakthrough may be expected in some of the topics.

  15. What can ARGO's tell us on the processes in Baltic Sea?

    Science.gov (United States)

    Roiha, Petra; Siiriä, Simo-Matti; Nummelin, Aleksi; Aro, Eemeli; Purokoski, Tero

    2014-05-01

    Finnish Meteorological Institute has been testing ARGO floats in the Baltic Sea as a mean for collecting data from the sea areas that are not easily reachable by research vessels or remote sensing. The observational data for Baltic Sea off-shore areas is very sparse and new observational methods are needed to fill the gaps in our knowledge and collect new data for different purposes, such as, operational activities, modelling and ocean science. The ARGO floats have been used successfully in the deep oceans. However, applying the ARGO floats in Baltic Sea is not straight forward, as the conditions differ greatly: the water is brackish, some areas are heavily trafficked and the northern parts freeze during the winter. In addition, the mean depth is only 54 metres, which is only a fraction of depths where ARGO floats have commonly been used. FMI has deployed three ARGO floats in Baltic Sea for different missions. The first ARGO was deployed in 2012 with normal diving algorithm, which checks the pressure hourly. The second float was modified by Aalto University so that the algorithm checks the pressure every 15 minutes. The first float was deployed in the Bothnian Sea in May 2013 and it measured over 200 profiles during its half year mission. The float with faster pressure detection was deployed in the Bothnian Sea in May 2013, and during it's 4 month mission it measured succesfully over 120 profiles. Another, longer test is ongoing on Eastern Gotland basin, where another ARGO float was deployed at Aug 2013, and still measures at Jan 2014. This one differs from earlier experiments as it has additional oxygen and scattering meters, also the area of measurements is deeper (200+ meters). The missions so far indicate, that with proper control and monitoring, ARGO's can be operated, and can measure long series of profiles. In addition to the actual measurements, the movement of ARGO floats gives possibilities to analyse currents in deeper areas of Baltic, and help

  16. Investigation of Selected Surface Integrity Features of Duplex Stainless Steel (DSS) after Turning

    Czech Academy of Sciences Publication Activity Database

    Krolczyk, G.; Nieslony, P.; Legutko, S.; Hloch, Sergej; Samardžić, I.

    2015-01-01

    Roč. 54, č. 1 (2015), s. 91-94. ISSN 0543-5846 Institutional support: RVO:68145535 Keywords : duplex stainless steel * machining * turning * surface integrity * surface roughness Subject RIV: JQ - Machines ; Tools Impact factor: 0.959, year: 2014 http://hrcak.srce.hr/126702

  17. The Knee of the Cosmic Hydrogen and Helium Spectrum below 1 PeV Measured by ARGO-YBJ and a Cherenkov Telescope of LHAASO

    CERN Document Server

    Bartoli, B; Bi, X J; Branchini, P; Budano, A; Camarri, P; Cao, Z; Cardarelli, R; Catalanotti, S; Chen, S Z; Chen, T L; Creti, P; Cui, S W; Dai, B Z; D'Amone, A; Danzengluobu,; De Mitri, I; Piazzoli, B D'Ettorre; Di Girolamo, T; Di Sciascio, G; Feng, C F; Feng, Zhaoyang; Feng, Zhenyong; Gou, Q B; Guo, Y Q; He, H H; Hu, Haibing; Hu, Hongbo; Iacovacci, M; Iuppa, R; Jia, H Y; Labaciren,; Li, H J; Liguori, G; Liu, C; Liu, J; Liu, M Y; Lu, H; Ma, L L; Ma, X H; Mancarella, G; Mari, S M; Marsella, G; Martello, D; Mastroianni, S; Montini, P; Ning, C C; Panareo, M; Perrone, L; Pistilli, P; Ruggieri, F; Salvini, P; Santonico, R; Shen, P R; Sheng, X D; Shi, F; Surdo, A; Tan, Y H; Vallania, P; Vernetto, S; Vigorito, C; Wang, H; Wu, C Y; Wu, H R; Xue, L; Yang, Q Y; Yang, X C; Yao, Z G; Yuan, A F; Zha, M; Zhang, H M; Zhang, L; Zhang, X Y; Zhang, Y; Zhao, J; Zhaxiciren,; Zhaxisangzhu,; Zhou, X X; Zhu, F R; Zhu, Q Q; Zizzi, G; Bai, Y X; Chen, M J; Chen, Y; Feng, S H; Gao, B; Gu, M H; Hou, C; Li, X X; Liu, J L; Wang, X; Xiao, G; Zhang, B K; Zhang, S S; Zhou, B; Zuo, X

    2015-01-01

    The measurement of cosmic ray energy spectra, in particular for individual species, is an essential approach in finding their origin. Locating the "knees" of the spectra is an important part of the approach and has yet to be achieved. Here we report a measurement of the mixed Hydrogen and Helium spectrum using the combination of the ARGO-YBJ experiment and of a prototype Cherenkov telescope for the LHAASO experiment. A knee feature at 640+/-87 TeV, with a clear steepening of the spectrum, is observed. This gives fundamental inputs to galactic cosmic ray acceleration models.

  18. MAG-EPA reduces severity of DSS-induced colitis in rats.

    Science.gov (United States)

    Morin, Caroline; Blier, Pierre U; Fortin, Samuel

    2016-05-15

    Ulcerative colitis (UC) is a chronic disease characterized by diffuse inflammation of the intestinal mucosa of the large bowel. Omega-3 (ω3) fatty acid supplementation has been associated with a decreased production of inflammatory cytokines involved in UC pathogenesis. The aim of this study was to determine the preventive and therapeutic potential of eicosapentaenoic acid monoglyceride (MAG-EPA) in an in vivo rats model of UC induced by dextran sulfate sodium (DSS). DSS rats were untreated or treated per os with MAG-EPA. Morphological, histological, and biochemical analyses were performed following MAG-EPA administrations. Morphological and histological analyses revealed that MAG-EPA pretreatment (12 days pre-DSS) and treatment (6 days post-DSS) exhibited strong activity in reducing severity of disease in DSS rats. Following MAG-EPA administrations, tissue levels of the proinflammatory cytokines TNF-α, IL-1β, and IL-6 were markedly lower compared with rats treated only with DSS. MAG-EPA per os administration decrease neutrophil infiltration in colon tissues, as depicted by myelohyperoxidase activity. Results also revealed a reduced activation of NF-κB pathways correlated with a decreased expression of COX-2 in colon homogenates derived from MAG-EPA-pretreated and treated rats. Tension measurements performed on colon tissues revealed that contractile responses to methacholine and relaxing effect induced by sodium nitroprusside were largely increased following MAG-EPA treatment. The combined treatment of MAG-EPA and vitamin E displayed an antagonistic effect on anti-inflammatory properties of MAG-EPA in DSS rats. PMID:27012773

  19. CRAB NEBULA: FIVE-YEAR OBSERVATION WITH ARGO-YBJ

    Energy Technology Data Exchange (ETDEWEB)

    Bartoli, B.; Catalanotti, S.; D' Ettorre Piazzoli, B.; Di Girolamo, T. [Dipartimento di Fisica dell' Università di Napoli " Federico II," Complesso Universitario di Monte Sant' Angelo, via Cinthia, I-80126 Napoli (Italy); Bernardini, P.; D' Amone, A.; De Mitri, I. [Dipartimento Matematica e Fisica " Ennio De Giorgi," Università del Salento, via per Arnesano, I-73100 Lecce (Italy); Bi, X. J.; Cao, Z.; Chen, S. Z. [Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918, 100049 Beijing (China); Branchini, P.; Budano, A. [Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre, via della Vasca Navale 84, I-00146 Roma (Italy); Camarri, P. [Dipartimento di Fisica dell' Università di Roma " Tor Vergata," via della Ricerca Scientifica 1, I-00133 Roma (Italy); Cardarelli, R.; Di Sciascio, G. [Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma (Italy); Chen, T. L.; Danzengluobu [Tibet University, 850000 Lhasa, Xizang (China); Creti, P. [Istituto Nazionale di Fisica Nucleare, Sezione di Lecce, via per Arnesano, I-73100 Lecce (Italy); Cui, S. W. [Hebei Normal University, Shijiazhuang 050016 Hebei (China); Dai, B. Z., E-mail: vernetto@to.infn.it [Yunnan University, 2 North Cuihu Rd., 650091 Kunming, Yunnan (China); Collaboration: ARGO-YBJ Collaboration; and others

    2015-01-10

    The ARGO-YBJ air shower detector monitored the Crab Nebula gamma-ray emission from 2007 November to 2013 February. The integrated signal, consisting of ∼3.3 × 10{sup 5} events, reached the statistical significance of 21.1 standard deviations. The obtained energy spectrum in the energy range 0.3-20 TeV can be described by a power law function dN/dE = I {sub 0} (E/2 TeV){sup –α}, with a flux normalization I {sub 0} = (5.2 ± 0.2) × 10{sup –12} photons cm{sup –2} s{sup –1} TeV{sup –1} and α = 2.63 ± 0.05, corresponding to an integrated flux above 1 TeV of 1.97 × 10{sup –11} photons cm{sup –2} s{sup –1}. The systematic error is estimated to be less than 30% for the flux normalization and 0.06 for the spectral index. Assuming a power law spectrum with an exponential cutoff dN/dE = I {sub 0} (E/2 TeV){sup –α} exp (–E/E {sub cut}), the lower limit of the cutoff energy E {sub cut} is 12 TeV, at 90% confidence level. Our extended data set allows the study of the TeV emission over long timescales. Over five years, the light curve of the Crab Nebula in 200-day bins is compatible with a steady emission with a probability of 7.3 × 10{sup –2}. A correlated analysis with Fermi-LAT data over ∼4.5 yr using the light curves of the two experiments gives a Pearson correlation coefficient r = 0.56 ± 0.22. Concerning flux variations on timescales of days, a ''blind'' search for flares with a duration of 1-15 days gives no excess with a significance higher than four standard deviations. The average rate measured by ARGO-YBJ during the three most powerful flares detected by Fermi-LAT is 205 ± 91 photons day{sup –1}, consistent with the average value of 137 ± 10 day{sup –1}.

  20. [Water quality forewarning model in the framework of water pollution forewarning DSS].

    Science.gov (United States)

    Guo, Yu; Jia, Hai-Feng

    2010-12-01

    In order to deal with the water pollution accident and take emergency measures effectively, water pollution forewarning decision support systems (DSS) is important to be established and water quality forewarning model is one of the hard points of DSS. Miyun Reservoir is the most important surface water sources of Beijing. Baihe River, which is the upstream river of Miyun Reservoir, is selected as the case study in this paper. The three-layer frame of the water pollution forewarning DSS is proposed with the core of mathematical model; then model development and parameterization are studied. Finally, a typical accident of NaCN pollution is taken for instance; the scenario of the accident is simulated and analyzed by DSS. The case study shows that the DSS could precisely analyze and forecast the pollution development trend, and simulate the different impact of emergency proposal. The result could support the primary decision of the emergency proposal to meet the functional requirement of the system. PMID:21360873

  1. Accuracy of ARGOS locations of Pinnipeds at-sea estimated using Fastloc GPS.

    Directory of Open Access Journals (Sweden)

    Daniel P Costa

    Full Text Available BACKGROUND: ARGOS satellite telemetry is one of the most widely used methods to track the movements of free-ranging marine and terrestrial animals and is fundamental to studies of foraging ecology, migratory behavior and habitat-use. ARGOS location estimates do not include complete error estimations, and for many marine organisms, the most commonly acquired locations (Location Class 0, A, B, or Z are provided with no declared error estimate. METHODOLOGY/PRINCIPAL FINDINGS: We compared the accuracy of ARGOS Locations to those obtained using Fastloc GPS from the same electronic tags on five species of pinnipeds: 9 California sea lions (Zalophus californianus, 4 Galapagos sea lions (Zalophus wollebaeki, 6 Cape fur seals (Arctocephalus pusillus pusillus, 3 Australian fur seals (A. p. doriferus and 5 northern elephant seals (Mirounga angustirostris. These species encompass a range of marine habitats (highly pelagic vs coastal, diving behaviors (mean dive durations 2-21 min and range of latitudes (equator to temperate. A total of 7,318 ARGOS positions and 27,046 GPS positions were collected. Of these, 1,105 ARGOS positions were obtained within five minutes of a GPS position and were used for comparison. The 68(th percentile ARGOS location errors as measured in this study were LC-3 0.49 km, LC-2 1.01 km, LC-1 1.20 km, LC-0 4.18 km, LC-A 6.19 km, LC-B 10.28 km. CONCLUSIONS/SIGNIFICANCE: The ARGOS errors measured here are greater than those provided by ARGOS, but within the range of other studies. The error was non-normally distributed with each LC highly right-skewed. Locations of species that make short duration dives and spend extended periods on the surface (sea lions and fur seals had less error than species like elephant seals that spend more time underwater and have shorter surface intervals. Supplemental data (S1 are provided allowing the creation of density distributions that can be used in a variety of filtering algorithms to improve the

  2. The Application of ARGO Data to the Global Ocean Data Assimilation Operational System of NCC

    Institute of Scientific and Technical Information of China (English)

    LIU Yimin; ZHANG Renhe; YIN Yonghong; NIU Tao

    2005-01-01

    In this paper, we have preliminarily studied the application of ARGO (Array for Real-time Geostrophic Oceanography) data to the Global Ocean Data Assimilation System of National Climate Center of China (NCC-GODAS), which mainly contains 4 sub-systems such as data preprocessing, real-time wind stress calculating, variational analysis and interpolating, and ocean dynamic model. For the sake of using ARGO data, the relevant adjustment and improvement have been made at the corresponding aspects in the subsystems.Using the observation data from 1981 to 2003 including the ARGO data of 2001 to July. 2003, we have performed a series of numerical experiments on this system. Comparing with the corresponding results of NCEP, It is illustrated that using ARGO data can improve the results of NCC-GODAS in the region of the Middle Pacific, for instance SST, SSTA (SST anomalies), Nino index, sea sub-surface temperature,etc. Furthermore, it is obtained that NCC-GODAS benefits from ARGO data in the other regions such as Atlantic Ocean, Indian Ocean, and extratropical Pacific Ocean much more than in the tropical Pacific.

  3. Crab Nebula: five-year observation with ARGO-YBJ

    CERN Document Server

    ,

    2015-01-01

    The ARGO-YBJ air shower detector monitored the Crab Nebula gamma ray emission from 2007 November to 2013 February. The integrated signal, consisting of $\\sim$3.3 $\\times$ 10$^5$ events,reached the statistical significance of 21.1 standard deviations. The obtained energy spectrum in the energy range 0.3-20 TeV can be described by a power law function dN/dE = I$_0$ (E / 2 TeV)$^{-\\alpha}$, with a flux normalization I$_0$ = (5.2 $\\pm$ 0.2) $\\times$ 10$^{-12}$ photons cm$^{-2}$ s$^{-1}$ TeV$^{-1}$ and $\\alpha$ = 2.63 $\\pm$ 0.05, corresponding to an integrated flux above 1 TeV of 1.97 $\\times$ 10$^{-11}$ photons cm$^{-2}$ s$^{-1}$. The systematic error is estimated to be less than 30$\\%$ for the flux normalization and 0.06 for the spectral index. Assuming a power law spectrum with an exponential cutoff dN/dE = I$_0$ (E / 2 TeV)$^{-\\alpha}$ $\\exp$ (-E / E$_{cut}$), the lower limit of the cutoff energy E$_{cut}$ is 12 TeV, at 90$\\%$ confidence level. Our extended dataset allows the study of the TeV emission over lon...

  4. ARGOS: a laser star constellation for the LBT

    Science.gov (United States)

    Kanneganti, Shrikrishna; Rabien, Sebastian; Deysenroth, Matthias; Ziegleder, Julian; Gemperlein, Hans; Haug, Marcus

    2010-07-01

    ARGOS is an innovative multi-star adaptive optics system being built for use with LUCIFER on the Large Binocular Telescope (LBT). LUCIFER is a wide field imager and multi-object spectrograph. Using a constellation of laser guide stars permits PSF correction over a wide field in exchange for a relatively small sacrifice in achievable correction. The laser constellation consists of three stars per each of the two eyes of the LBT. The stars are nominally positioned on a circle 2' in radius, but each star can be moved by upto 0.5' in any direction. Nd:YAG (SHG) lasers from InnoLas Laser GmbH are used to create the green (532nm) laser stars, and have an output above 18 W each at the planned pulsing frequency of 10kHz. The lasers are launched using a 40cm telescope and focused at a height of 12 km. The laser system is designed to be optically simple yet configurable. It also provisions for a central sodium laser to be installed later. We detail the characteristics of the laser system and the current state of its development.

  5. Una aplicación DSS para el mercado del vino

    OpenAIRE

    Martínez Valderrama, Jaime; NIETO, CÉSAR; Martínez Vicente, Joaquín Silvio

    2002-01-01

    El trabajo presenta la estructura y normas de manejo de una aplicación DSS (Sistema de Soporte a la Decisión) para utilizar un modelo de precios hedónicos del vino de calidad y otro del consumo de bebidas alcohólicas en España. El plan del artículo es el siguiente: en primer lugar se presentan, sucesivamente, sendos resúmenes de los trabajos que sirven de soporte a los dos modelos sobre los que se ha construido la aplicación DSS. A continuación, se ofrece l...

  6. Argo: enabling the development of bespoke workflows and services for disease annotation.

    Science.gov (United States)

    Batista-Navarro, Riza; Carter, Jacob; Ananiadou, Sophia

    2016-01-01

    Argo (http://argo.nactem.ac.uk) is a generic text mining workbench that can cater to a variety of use cases, including the semi-automatic annotation of literature. It enables its technical users to build their own customised text mining solutions by providing a wide array of interoperable and configurable elementary components that can be seamlessly integrated into processing workflows. With Argo's graphical annotation interface, domain experts can then make use of the workflows' automatically generated output to curate information of interest.With the continuously rising need to understand the aetiology of diseases as well as the demand for their informed diagnosis and personalised treatment, the curation of disease-relevant information from medical and clinical documents has become an indispensable scientific activity. In the Fifth BioCreative Challenge Evaluation Workshop (BioCreative V), there was substantial interest in the mining of literature for disease-relevant information. Apart from a panel discussion focussed on disease annotations, the chemical-disease relations (CDR) track was also organised to foster the sharing and advancement of disease annotation tools and resources.This article presents the application of Argo's capabilities to the literature-based annotation of diseases. As part of our participation in BioCreative V's User Interactive Track (IAT), we demonstrated and evaluated Argo's suitability to the semi-automatic curation of chronic obstructive pulmonary disease (COPD) phenotypes. Furthermore, the workbench facilitated the development of some of the CDR track's top-performing web services for normalising disease mentions against the Medical Subject Headings (MeSH) database. In this work, we highlight Argo's support for developing various types of bespoke workflows ranging from ones which enabled us to easily incorporate information from various databases, to those which train and apply machine learning-based concept recognition models

  7. Intraseasonal Oscillation in Global Ocean Temperature Inferred from Argo

    Institute of Scientific and Technical Information of China (English)

    HU Ruijin; WEI Meng

    2013-01-01

    The intraseasonal oscillation (ISO; 14-97-day periods) of temperature in the upper 2000 m of the global ocean was studied based on Argo observations from 2003-2008.It is shown that near the surface the ISO existed mainly in a band east of 60°E,between 10°S and 10°N,and the region around the Antarctic Circumpolar Current (ACC).At other levels analyzed,the ISOs also existed in the regions of the Kuroshio,the Gulf Stream,the Indonesian throughflow,the Somalia current,and the subtropical countercurrent (STCC) of the North Pacific.The intraseasonal signals can be seen even at depths of about 2000 m in some regions of the global ocean.The largest amplitude of ISO appeared at the thermocline of the equatorial Pacific,Atlantic and Indian Ocean,with maximum standard deviation (STD) exceeding 1.2℃.The ACC,the Kuroshio,and the Gulf Stream regions all exhibited large STD for all levels analyzed.Especially at 1000 m,the largest STD appeared in the south and southeast of South Africa-a part of the ACC,with a maximum value that reached 0.5℃.The ratios of the intraseasonal temperature variance to the total variance at 1000 m and at the equator indicated that,in a considerable part of the global deep ocean,the ISO was dominant in the variations of temperature,since such a ratio exceeded even 50% there.A case study also confirmed the existence of the ISO in the deep ocean.These results provide useful information for the design of field observations in the global ocean.Analysis and discussion are also given for the mechanism of the ISO.

  8. Argo and other tidal structures around the milky way

    Directory of Open Access Journals (Sweden)

    Helio J. Rocha-Pinto

    2006-01-01

    Full Text Available Se realiz o una b usqueda de sobredensidades que pudieran estar asociadas con subestructuras en el halo gal actico en bajas latitudes a partir de una muestra de gigantes M de 2MASS. Bajo la hip otesis de que las poblaciones estelares en la V a L actea exterior deber an de estar distribuidas de manera m as o menos sim etrica, se utilizaron dos m etodos para identi car asimetr as en la distribuci on (l; b de gigantes M de 2MASS que pudieran ser indicios de sobredensidades estelares: (1 la veri caci on directa de simetr a en campos re ejados sobre varios c rculos mayores sim etricos hipot eticos en la Galaxia; y (2 la extracci on de un modelo gal actico sim etrico para la distribuci on de gigantes M a partir de la distribuci on observada. Si bien podemos con rmar varios de los aspectos reportados previamente de la corriente de marea Monoceros, un hallazgo mayor de nuestro trabajo es que el n ucleo aparente del sistema Monoceros no se localiza en Canis Major, como lo han sugerido otras exploraciones, sino con mayor probabilidad a mayor l, en la regi on de la antigua constelaci on Argo (actualmente Puppis, Vela y Carina. Adem as del extenso sistema Monoceros, identi camos varias otras sobredensidades de gigantes M, principalmente a mayores distancias. Algunas de ellas corresponden a sistemas encontrados previamente en Triangulo-Andr omeda y Perseo, mientras que la naturaleza de otros de menor signi cado permanece incierta o puede ser atribuida a asimetr as de primer plano de estrellas enanas M contaminantes.

  9. A Framework of the Decision Support System (DSS) for Higher Education Appropriate Scale

    Institute of Scientific and Technical Information of China (English)

    ZHAI Li-li; GAO Chang-yuan; HAO Hong-jun

    2002-01-01

    According to the relation of the developing speed and scale of higher education and those of national economy, the establishing method and structure of higher education appropriate scale DSS (HEASDSS) are researched applying to educational economic principle and decision support system theory.

  10. An online system for rapid and simultaneous flood mapping scenario simulations - the Zambezi FloodDSS

    Science.gov (United States)

    Schulz, Alexander; Kiesel, Jens; Kling, Harald; Preishuber, Martin; Petersen, Georg

    2015-04-01

    The Zambezi is the fourth largest river basin in Africa. Catchment hydrology is very complex due to significant spatio-temporal variations in precipitation and retention in surface water bodies including Lake Malawi, various large natural floodplains and swamps as well as the two large artificial reservoirs Lake Kariba and Lake Cahora Bassa. The Zambezi DSS, a free web-based system, can be used to simulate catchment hydrology under various climate scenarios and user defined reservoir operation rules. Since the Mozambican part of the river is prone to flooding, causing loss of life and considerable damages, the DSS can provide discharges along the river as an input to hydraulic scenario simulations and flood mapping. However, a dynamic link to a server-based hydraulic model would compromise the DSS as a fast and open online system: Using this coupled system, hydraulic simulations and flood mapping would have to be carried out for each simulated scenario, which is a time consuming, computationally intense process and difficult to implement in an online system which is used by multiple users, each creating multiple flood maps simultaneously. We thus developed a different approach to dynamically derive flood maps along the main channel of the Zambezi within Mozambique for any scenario produced by the Zambezi DSS: The HEC-RAS model has been used to simulate physically possible range of discharges for more than 200 flow events at more than 1900 cross sections. Each event is converted to an inundation map, which is cut into inundation polygons at every cross section and saved with the according discharge and water level value in a database. The database is extended by polygons showing reservoir surface area extents of existing and future dams depending on reservoir water level. This database is dynamically linked to the Zambezi DSS and flood inundation maps are produced for any possible DSS-scenario using hydraulic plausibility constraints. Internal flood map generation

  11. No Protection against DSS-induced Colitis by Short-term Pretreatment with Seal or Fish Oils in Rats

    Directory of Open Access Journals (Sweden)

    Gülen Arslan

    2007-01-01

    Full Text Available Background: Omega-3 (n-3 polyunsaturated fatty acids (PUFAs have modulating effects in several chronic inflammatory conditions. The aim of the present study was to test whether prior short-term dietary supplementation with n-3 (fish or seal oil or n-6 (soy oil PUFA rich oils would protect the development of dextran sulfate sodium (DSS-induced colitis in rats.Methods: Forty-eight male Wistar rats were divided into 6 groups: no intervention, sham, DSS, seal oil + DSS, fi sh oil +DSS and soy oil + DSS. Following 7 days of acclimatisation, 1 mL oil (seal, fish or soy or distilled water (sham was administered by gavage day 8 to 14. Colitis was induced by 5% DSS in drinking water from day 15 to 21. Rats were sacrificed on day 23. Histological colitis (crypt and inflammation scores, faecal granulocyte marker protein (GMP and quantitative fatty acid composition in red blood cells were measured.Results: Pretreatment with fish or seal oils did not significantly influence DSS induced inflammation. In fact, all the oils tended to exacerbate the inflammation. Soy oil increased the mean crypt score (P < 0.04, but not the inflammation score or GMP. The ratio of n-6 to n-3 fatty acids (FAs was 11 to 1 and 10 to 1 in standard diet and in red blood cells of control rats, respectively. Following administration of DSS, the ratio fell in all treatment groups (P < 0.001. The lowest ratios were seen in the groups receiving DSS + fi sh or seal oils (around 6 to 1.Conclusion: Short-term pretreatment with fish or seal oils did not protect against subsequent induction of colitis by DSS in this rat model. Whether the high ratio of n-6 to n-3 FAs in the standard diet concealed effects of n-3 FA supplementation should be further investigated.

  12. Argos: Internacionalización en un entorno de conflicto armado Argos: Internacionalización en un entorno de conflicto armado*

    Directory of Open Access Journals (Sweden)

    Juan David Penagos Tascón

    2008-12-01

    Full Text Available This case study illustrates how Argos achieved to become one of the largest cement and concrete suppliers of Latin America, in spite of the fact that some of its production facilities are located in armed conflict areas. For that reason, the company implemented various corporate social responsibility strategies to overcome the difficulties of operating in these areas. These strategies contributed to the consolidation of the company’s operations under a single juridical and administrative entity, and facilitated the internationalization process to Central America, the Caribbean and the United States.Este caso de estudio empresarial muestra cómo la compañía Argos logró convertirseen uno de los proveedores de cemento y concreto más grandes de Latinoamérica,a pesar de que algunas de sus plantas productoras se encontraban ubicadas enzonas de conflicto armado, razón por la cual se desarrollaron diferentes iniciativasde responsabilidad social corporativa que permitieron operar en estas zonas.Garantizada la continuidad del negocio, las autoridades de Argos decidenconsolidar todas sus operaciones en una sola razón jurídica y administrativa yllevar a la empresa a un proceso de internacionalización en Centroamérica, Caribey Estados Unidos.

  13. Parametric improvement for the ingestion dose module of the European ARGOS and RODOS decision support systems

    DEFF Research Database (Denmark)

    Andersson, Kasper Grann; Nielsen, Sven Poul; Thørring, H.;

    2011-01-01

    The European decision support systems ARGOS and RODOS rely on the ECOSYS model for prognoses of ingestion doses. ECOSYS needs an update of various parameter values to provide reliable estimates. This paper reports on some results of a Nordic initiative to derive parameter values that are specific...

  14. Improving ingestion dose modelling for the ARGOS and RODOS decision support systems: A Nordic Initiative

    DEFF Research Database (Denmark)

    Andersson, Kasper Grann; Nielsen, Sven Poul; Thørring, Håvard;

    2011-01-01

    A Nordic work group under the NKS-B activity PARDNOR has revised the input parameters in the ECOSYS model that is incorporated for ingestion dose modelling in the ARGOS and RODOS decision support systems. The new parameterisation takes into account recent measurement data, and targets the model f...

  15. Assessment of the Black Sea observing system. A focus on 2005-2012 Argo campaigns

    Science.gov (United States)

    Grayek, Sebastian; Stanev, Emil V.; Schulz-Stellenfleth, Johannes

    2015-12-01

    An observing system in the Black Sea combining remote sensing data such as sea level anomalies from altimetry, sea surface temperature from satellite radiometer and data from Argo floats has been analyzed with the aim to quantify the contribution of different information sources when reconstructing the ocean state. The main research questions are: (1) do Argo float measurements substantially impact the quality of estimates, (2) what is the dependence of this quality upon the data and sampling used, and (3) are there specific Black Sea issues? Numerical model output and statistical analysis were used for this purpose. It has been demonstrated that the statistical method performs in a consistent way reproducing known geophysical patterns. Maximum footprints of sea level, salinity and temperature were illustrated, most of them clearly connected with specific thermohaline conditions and the general circulation. Reduced analysis capabilities were identified as associated with a low level of dynamical coupling between the shelf and the open ocean, mesoscale dynamics and representation of diapycnic processes in the models. The accuracy of Argo pressure measurements appeared very important to resolve the extremely sharp stratification in the upper layers. The present-day number of Argo floats operating in the Black Sea of about 10, seems optimal for operational purposes.

  16. Üks suund, kaks vaadet / Tiit Land, Argo Ralja ; intervjueerinud Katrin Reimann

    Index Scriptorium Estoniae

    Land, Tiit, 1964-

    2012-01-01

    Intervjuu Tallinna Ülikooli rektori Tiit Landi ja Üliõpilaskonna juhatuse esimehe Argo Raljaga Tallinna Ülikooli iseloomustavatest märksõnadest möödunud aastal, positsioonist Eesti hariduses, ülikooli koostööst instituutide ja kolledžitega

  17. On-line satellite/central computer facility of the Multiparticle Argo Spectrometer System

    International Nuclear Information System (INIS)

    An on-line satellite/central computer facility has been developed at Brookhaven National Laboratory as part of the Multiparticle Argo Spectrometer System (MASS). This facility consisting of a PDP-9 and a CDC-6600, has been successfully used in study of proton-proton interactions at 28.5 GeV/c. (U.S.)

  18. On the observability of turbulent transport rates by Argo: supporting evidence from an inversion experiment

    Directory of Open Access Journals (Sweden)

    G. Forget

    2015-06-01

    Full Text Available Although estimation of turbulent transport parameters using inverse methods is not new, there is little evaluation of the method in the literature. Here, it is shown that extended observation of the broad scale hydrography by Argo provides a path to improved estimates of regional turbulent transport rates. Results from a 20 year ocean state estimate produced with the ECCO v4 non-linear inverse modeling framework provide supporting evidence. Turbulent transport parameter maps are estimated under the constraints of fitting the extensive collection of Argo profiles collected through 2011. The adjusted parameters dramatically reduce misfits to in situ profiles as compared with earlier ECCO solutions. They also yield a clear reduction in the model drift away from observations over multi-century long simulations, both for assimilated variables (temperature and salinity and independent variables (bio-geochemical tracers. Despite the minimal constraints imposed specifically on the estimated parameters, their geography is physically plausible and exhibits close connections with the upper ocean ocean stratification as observed by Argo. The estimated parameter adjustments furthermore have first order impacts on upper-ocean stratification and mixed layer depths over 20 years. These results identify the constraint of fitting Argo profiles as an effective observational basis for regional turbulent transport rates. Uncertainties and further improvements of the method are discussed.

  19. On the observability of turbulent transport rates by Argo: supporting evidence from an inversion experiment

    Directory of Open Access Journals (Sweden)

    G. Forget

    2015-10-01

    Full Text Available Although estimation of turbulent transport parameters using inverse methods is not new, there is little evaluation of the method in the literature. Here, it is shown that extended observation of the broad-scale hydrography by Argo provides a path to improved estimates of regional turbulent transport rates. Results from a 20-year ocean state estimate produced with the ECCO v4 (Estimating the Circulation and Climate of the Ocean, version 4 non-linear inverse modeling framework provide supporting evidence. Turbulent transport parameter maps are estimated under the constraints of fitting the extensive collection of Argo profiles collected through 2011. The adjusted parameters dramatically reduce misfits to in situ profiles as compared with earlier ECCO solutions. They also yield a clear reduction in the model drift away from observations over multi-century-long simulations, both for assimilated variables (temperature and salinity and independent variables (biogeochemical tracers. Despite the minimal constraints imposed specifically on the estimated parameters, their geography is physically plausible and exhibits close connections with the upper-ocean stratification as observed by Argo. The estimated parameter adjustments furthermore have first-order impacts on upper-ocean stratification and mixed layer depths over 20 years. These results identify the constraint of fitting Argo profiles as an effective observational basis for regional turbulent transport rate inversions. Uncertainties and further improvements of the method are discussed.

  20. A COMPARISON OF ARGO MERCHANT OIL AND SEDIMENT HYDROCARBONS FROM NANTUCKET SHOALS

    Science.gov (United States)

    Surface sediment samples collected from the Nantucket Shoals Argo Merchant wreck site area in February, 1977, were analyzed for hydrocarbon content by gas chromatography. Analysis of sediment grab subsections revealed no clear trend of hydrocarbon contamination as a function of d...

  1. GAS CHROMATOGRAPHIC ANALYSES OF ARGO MERCHANT OIL AND SEDIMENT HYDROCARBONS AT THE WRECK SITE

    Science.gov (United States)

    Hydrocarbon concentrations were determined in surface sediments in the vicinity of the Argo Merchant wreck site. Of the 4000 sq km area surveyed, contaminated sediments were found in a 10-15 sq km section around the wreck site in February 1977. The contamination was in the form o...

  2. THE ARGO MERCHANT OIL SPILL AND THE SEDIMENTS OF NANTUCKET SHOALS: RESEARCH, LITIGATION AND LEGISLATION

    Science.gov (United States)

    On December 15, 1976, the tanker Argo Merchant ran around on Fishing Rip of Nantucket Shoals off the coast of Massachusetts. After several days of stormy weather she broke apart releasing her entire cargo of 28 X 10 to 3rd power metric tons of No. 6 fuel oil into the ocean. Feder...

  3. Interactions of Cosmic Rays in the primary energy range (0.1-1 PeV studied by the ARGO-YBJ Experiment

    Directory of Open Access Journals (Sweden)

    Surdo A.

    2013-06-01

    Full Text Available The ARGO-YBJ detector layout, features and location offer a unique possibility for a detailed study of several characteristics of the hadronic component of the cosmic ray flux in an energy range hardly accessed by direct measurements. The proton-air cross section has already been measured by ARGO-YBJ in an energy region up to ~ 100 TeV where the primary cosmic ray composition is sufficiently well known for that measure to be unbiased. The analog readout of the RPC signals now provides new tools to measure the lateral distribution of particle density (LDF as close as a few meters from the core and to investigate with unprecedented resolution the shower time structure. This allows to extend the hadronic interaction and mass composition studies up to ~PeV energies in the laboratory rest frame. Moreover, it is shown that the LDF of detected showers can be properly described, even very close to the shower axis, by a NKG-like function, whose shape parameter is clearly related to the shower age and can be used for studying the mass composition of cosmic rays.

  4. Hydrodynamic variability of the Cretan Sea derived from Argo float profiles and multi-parametric buoy measurements during 2010-2012

    Science.gov (United States)

    Kassis, Dimitris; Korres, Gerasimos; Petihakis, George; Perivoliotis, Leonidas

    2015-12-01

    In this work, we examine the complex hydrology of the Cretan Sea, an important area which affects the dynamics of the Eastern Mediterranean basin. We use T/S profile data derived from the first Argo float deployed in the area during June 2010 within the framework of the Greek Argo program. Temperature and salinity profiles were measured over a 2-year period, analyzed, and combined with time series data recorded from the POSEIDON E1-M3A multi-parametric instrumentation platform operating in the area since 2007. The acquired datasets have been enriched with available CTD profiles taken on the mooring site during cruise maintenance surveys. The combined research activities resulted in a large dataset of physical properties allowing extended geographical coverage and an in-depth analysis of the Cretan Sea dynamics during this 2-year period. Data analysis shows significant variability of water masses of different origin at subsurface and deep layers. This confirms previous findings describing the area as transitional with water masses of different origin meeting and interacting. Furthermore, additional features of the area are described combining information from satellite altimetry. In this study, new circulation systems are identified at intermediate and subsurface layers affecting both the dynamic behavior of the basin's upper thermocline and the intermediate/deep water mass tempo-spatial variability. We further investigate the physical properties of the water column and suggest an updated mesoscale circulation picture based on the dynamics of the variable hydrological regimes of the Cretan Sea basin.

  5. Vertical temperature dynamics in the Northern Baltic Sea based on 3D modelling and data from shallow-water Argo floats

    Science.gov (United States)

    Westerlund, Antti; Tuomi, Laura

    2016-06-01

    3D hydrodynamic models often produce errors in the depth of the mixed layer and the vertical density structure. We used the 3D hydrodynamic model NEMO to investigate the effect of vertical turbulence parameterisations on seasonal temperature dynamics in the Bothnian Sea, Baltic Sea for the years 2012 and 2013. We used vertical profiles from new shallow-water Argo floats, operational in the area since 2012, to validate our model. We found that NEMO was able to reproduce the general features of the seasonal temperature variations in the study area, when meteorological forcing was accurate. The k-ε and k-ω schemes were selected for a more detailed analysis. Both schemes showed clear differences, but neither proved superior. While sea surface temperature was better simulated with the k-ω scheme, thermocline depth was clearly better with the k-ε scheme. We investigated the effect of wave-breaking on the mixing of the surface layer. The Craig and Banner parameterisation clearly improved the representation of thermocline depth. However, further tuning of the mixing parameterisations for the Baltic Sea is needed to better simulate the vertical temperature structure. We found the autonomous Baltic Sea Argo floats valuable for model validation and performance evaluation.

  6. Contribution of the Argos System for the study of the polar regions

    International Nuclear Information System (INIS)

    The Argos data collection and location system, aboard the NOAA polar orbiters, has been used by many scientists studying the polar regions. This paper will describe the latest improvements in this, the first worldwide operational location system, and summarize some applications of the Argos System developed by North American users in the polar regions. Arctic applications include drifting buoy collection of meteorological and/or oceanographic data to support operational programs using the ice as a research platform. Antarctic applications include environmental research for a better understanding of microbial ecosystems; winter data acquisition on ice motion using parachute-dropped buoys; oceanographic drifters to support operational and research programs; automatic weather and geophysical stations; high-altitude balloon experiments to observe supernovas; long-duration balloon experiments to collect data on stratospheric winds; tracking movements of fur and Weddell seals, and penguins. The applications described above were made possible by specific characteristics and capabilities of the Argos System: systematic polar coverage; two operational satellites since 1979 and probably continuing after the year 2000; near-realtime data availability for platforms within the footprint of the NOAA Fairbanks ground station during every satellite pass; data provided directly to the user's own PC upon request or available in the two redundant data processing centers (Toulouse, France and Landover, Maryland, US) 24 hours a day through data transmission networks; location accuracy of 150 m. Argos-compatible instruments have been designed by numerous governmental and private organizations to operate in the harsh polar environment and to take advantage of the unique platform provided by the ice. The Argos System will continue to provide operational and reliable environmental location and data

  7. Enterococcus durans TN-3 Induces Regulatory T Cells and Suppresses the Development of Dextran Sulfate Sodium (DSS)-Induced Experimental Colitis

    Science.gov (United States)

    Kanda, Toshihiro; Ohno, Masashi; Imaeda, Hirotsugu; Shimada, Takashi; Inatomi, Osamu; Bamba, Shigeki; Sugimoto, Mitsushige; Andoh, Akira

    2016-01-01

    Background and Aims Probiotic properties of Enterococcus strains have been reported previously. In this study, we investigated the effects of Enterococcus (E.) durans TN-3 on the development of dextran sulfate sodium (DSS) colitis. Methods BALB/c mice were fed with 4.0% DSS in normal chow. Administration of TN-3 (10mg/day) was initiated 7days before the start of DSS feeding. Mucosal cytokine expression was analyzed by real time-PCR and immunohistochemistry. The lymphocyte subpopulation were analyzed by flow cytometry. The gut microbiota profile was analyzed by a terminal-restriction fragment length polymorphism method (T-RFLP). Results The disease activity index and histological colitis score were significantly lower in the DSS plus TN-3 group than in the DSS group. The mucosal mRNA expression of proinflammatory cytokines (IL-1β, IL-6, IL-17A and IFN-γ) decreased significantly in the DSS plus TN-3 group as compared to the DSS group. The proportion of regulatory T cells (Treg cells) in the mucosa increased significantly in the DSS plus TN-3 group as compared to the DSS group. Both fecal butyrate levels and the diversity of fecal microbial community were significantly higher in the TN-3 plus DSS group than in the DSS group. Conclusions E. durans TN-3 exerted an inhibitory effect on the development of DSS colitis. This action might be mediated by the induction of Treg cells and the restoration of the diversity of the gut microbiota. PMID:27438072

  8. Temperature, salinity and dissolved oxygen profile data from globally distributed Argo profiling floats through the month of August 2016 for the Global Argo Data Repository, 1995-09-07 to 2016-08-31 (NODC Accession 0042682)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data represent all data collected from Argo profiling floats through the current month (August 2016). The NOAA National Centers for Environmental Information...

  9. Dried Saliva Spot (DSS) as a Convenient and Reliable Sampling for Bioanalysis: An Application for the Diagnosis of Diabetes Mellitus.

    Science.gov (United States)

    Numako, Masahiro; Takayama, Takahiro; Noge, Ichiro; Kitagawa, Yutaka; Todoroki, Kenichiro; Mizuno, Hajime; Min, Jun Zhe; Toyo'oka, Toshimasa

    2016-01-01

    This paper proposes the dried saliva spot (DSS) as a convenient sampling technique for bioanalysis. The analytical method with the DSS was used for the determination of D,L-lactic acid (D,L-LA) and the D/L ratio of diabetic patients and prediabetic persons for the simple screening of the disease. The D,L-LA in the DSS was labeled with a chiral reagent (DMT-3(S)-Apy) for carboxylic acids and determined by UPLC-ESI-MS/MS. The limits of detection (signal-to-noise ratio (S/N) = 3) for the DSS analysis were on the amol level (∼30 amol). Because good stability, recovery, accuracy, and precision of the D,L-LA for the DSS method was also obtained from the proposed procedure, the DSS method was applied to the determination of the D- and L-isomers of LA of diabetic patients, and prediabetic and healthy persons. The D/L-LA ratio by the present DSS method and the HbA1c value in blood were well-correlated to the serious diabetic patients, whereas the relation in the prediabetic persons was not very good. The reason seems to be due to the rough saliva sampling, and not to the DSS method, because strict regulation was not requested for the prediabetic and healthy persons. In order to have a successful DSS analysis, the stability of the target molecule, the detection sensitivity to the target molecule, and the validated determination method are important. PMID:26629726

  10. CRED SVP Drifting Buoy Argos_ID 44765 Data, Manua in the American Samoa, 200402-200406 (NODC Accession 0067474)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 44765 was deployed in the region of American Samoa to assess ocean currents and sea surface temperature. SVP drifter data files contain...

  11. CRED SVP Drifting Buoy Argos_ID 24753 Data in American Samoa, 200307-200407 (NODC Accession 0067474)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 24753 was deployed in the region of American Samoa to assess ocean currents and sea surface temperature. SVP drifter data files contain...

  12. CRED SVP Drifting Buoy Argos_ID 35644 Data Tau, American Samoa, 200202-200207 (NODC Accession 0067474)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 35644 was deployed in the region of American Samoa to assess ocean currents and sea surface temperature. SVP drifter data files contain...

  13. CRED APEX Drifting Buoy Argos_ID 25333 Data in the NW Hawaiian Islands, 200110-200204 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED APEX drifter Argos_ID 25333 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. APEX drifter data files...

  14. CRED APEX Drifting Buoy Argos_ID 25321 Data in the Northwestern Hawaiian Islands, 200110-200404 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED APEX drifter Argos_ID 25321 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. APEX drifter data files...

  15. CRED APEX Drifting Buoy Argos_ID 25330 Data Maro Reef, Northwestern Hawaiian Islands, 200109-200201 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED APEX drifter Argos_ID 25330 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. APEX drifter data files...

  16. CRED SVP Drifting Buoy Argos_ID 29938 Data in the Northwestern Hawaiian Islands, 200209-200312 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 29938 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  17. CRED SVP Drifting Buoy Argos_ID 29099 Data, Rota in the Marianas Archipelago, 200309-200402 (NODC Accession 0067473)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 29099 was deployed in the region of Marianas Archipelago to assess ocean currents and sea surface temperature. SVP drifter data files...

  18. CRED SVP Drifting Buoy Argos_ID 30225 Data in the Northwestern Hawaiian Islands, 200209-200401 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 30225 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  19. CRED SVP Drifting Buoy Argos_ID 52299 Data, Arakane in the Marianas Archipelago, 200509-200607 (NODC Accession 0067473)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 52299 was deployed in the region of the Marianas Archipelago to assess ocean currents and sea surface temperature. drifter data files...

  20. CRED SVP Drifting Buoy Argos_ID 30147 Data Nihoa, Northwestern Hawaiian Islands, 200209-200501 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 30147 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  1. Enhancing the use of Argos satellite data for home range and long distance migration studies of marine animals.

    Directory of Open Access Journals (Sweden)

    Xavier Hoenner

    Full Text Available Accurately quantifying animals' spatial utilisation is critical for conservation, but has long remained an elusive goal due to technological impediments. The Argos telemetry system has been extensively used to remotely track marine animals, however location estimates are characterised by substantial spatial error. State-space models (SSM constitute a robust statistical approach to refine Argos tracking data by accounting for observation errors and stochasticity in animal movement. Despite their wide use in ecology, few studies have thoroughly quantified the error associated with SSM predicted locations and no research has assessed their validity for describing animal movement behaviour. We compared home ranges and migratory pathways of seven hawksbill sea turtles (Eretmochelys imbricata estimated from (a highly accurate Fastloc GPS data and (b locations computed using common Argos data analytical approaches. Argos 68(th percentile error was 4 km for LC ≤ 0. Argos error structure was highly longitudinally skewed and was, for all LC, adequately modelled by a Student's t distribution. Both habitat use and migration routes were best recreated using SSM locations post-processed by re-adding good Argos positions (LC 1, 2 and 3 and filtering terrestrial points (mean distance to migratory tracks ± SD = 2.2 ± 2.4 km; mean home range overlap and error ratio = 92.2% and 285.6 respectively. This parsimonious and objective statistical procedure however still markedly overestimated true home range sizes, especially for animals exhibiting restricted movements. Post-processing SSM locations nonetheless constitutes the best analytical technique for remotely sensed Argos tracking data and we therefore recommend using this approach to rework historical Argos datasets for better estimation of animal spatial utilisation for research and evidence-based conservation purposes.

  2. A Web-based Intelligentized DSS Model for Manufacture and Management

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    This article discusses and realizes an intelligentized DSS model for manufacture and management under Intranet environment. It takes the advantage of Web techniques to integrate data and symbolic processing and forms a uniformedf ramework based on information management through the invocation of sub-systems. The model provides user a supporting environment for the management decision-making of enterprises by qualitative deduction and quantitative calculation.

  3. Evaluation of Concrete Consolidation: DSS-35 Antenna Reinforced Concrete Pedestal, Canberra Deep Space Communications Complex, Australia

    Science.gov (United States)

    Saldua, B. P.; Dodge, E. C.; Kolf, P. R.; Olson, C. A.

    2016-02-01

    Antenna structures for the Deep Space Network track spacecraft that are millions of miles away. Therefore, these structures have tight specifications for translation, rotation, and differential settlement. This article presents several nondestructive test methods that were used to evaluate, locate, and repair imperfections in the reinforced concrete pedestal that supports the DSS-35 antenna structure. These methods include: (1) impulse response (IR), (2) ultrasonic shear-wave tomography (MIRA), and (3) ground-penetrating radar (GPR).

  4. Tristetraprolin Mediates Anti-Inflammatory Effect of Carbon Monoxide against DSS-Induced Colitis

    OpenAIRE

    Joe, Yeonsoo; Uddin, Md Jamal; Min ZHENG; Kim, Hyo Jeong; Chen, Yingqing; Yoon, Nal Ae; Cho, Gyeong Jae; Park, Jeong Woo; Chung, Hun Taeg

    2014-01-01

    Endogenous carbon monoxide (CO) exerts anti-inflammatory effects. Tristetraprolin (TTP) is known to destabilize pro-inflammatory transcripts. Here we found that exogenous CO enhanced the decay of TNF-α mRNA and suppressed TNF-α expression in LPS-activated macrophages from wild-type (WT) mice. However, TTP deficiency abrogated the effects of exogenous CO. While CO treatment prior to DSS administration in WT mice significantly reduced inflammatory cytokine levels and colitis, it failed to reduc...

  5. Flavonoids Extracted from Licorice Prevents Colitis-Associated Carcinogenesis in AOM/DSS Mouse Model.

    Science.gov (United States)

    Huo, Xiaowei; Liu, Dongyu; Gao, Li; Li, Liyong; Cao, Li

    2016-01-01

    Inflammatory bowel disease (IBD) is generally considered as a major risk factor in the progression of colitis-associated carcinogenesis (CAC). Thus, it is well accepted that ameliorating inflammation creates a potential to achieve an inhibitory effect on CAC. Licorice flavonoids (LFs) possess strong anti-inflammatory activity, making it possible to investigate its pharmacologic role in suppressing CAC. The purpose of the present study was to evaluate the anti-tumor potential of LFs, and further explore the underlying mechanisms. Firstly, an azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced mouse model was established and administered with or without LFs for 10 weeks, and then the severity of CAC was examined macroscopically and histologically. Subsequently, the effects of LFs on expression of proteins associated with apoptosis and proliferation, levels of inflammatory cytokine, expression of phosphorylated-Janus kinases 2 (p-Jak2) and phosphorylated-signal transducer and activator of transcription 3 (p-Stat3), and activation of nuclear factor-κB (NFκB) and P53 were assessed. We found that LFs could significantly reduce tumorigenesis induced by AOM/DSS. Further study revealed that LFs treatment substantially reduced activation of NFκB and P53, and subsequently suppressed production of inflammatory cytokines and phosphorylation of Jak2 and Stat3 in AOM/DSS-induced mice. Taken together, LFs treatment alleviated AOM/DSS induced CAC via P53 and NFκB/IL-6/Jak2/Stat3 pathways, highlighting the potential of LFs in preventing CAC. PMID:27563884

  6. Predicting the surface roughness in the dry machining of duplex stainless steel (DSS)

    OpenAIRE

    G. Krolczyk; S. Legutko; Gajek, M.

    2013-01-01

    This paper examines the influence of cutting parameters, namely cutting speed, feed and depth of cut onto surface roughness after DSS turning process. The study included developing a mathematical model to determine the surface roughness. Verification research has been carried out on CNC lathe; hence the test plan has been adjusted to the possibility of programmable machines controlling GE Fanuc Series 0-T. The comparison of results obtained by given experimental plan was performed in industri...

  7. Microhardness changes gradient of the duplex stainless steel (DSS) surface layer after dry turning

    OpenAIRE

    G. Krolczyk; Nieslony, P.; S. Legutko; A. Stoic

    2014-01-01

    The article presents the gradient of microhardness changes as a function of the distance from the material surface after turning with a wedge provided with a coating with a ceramic intermediate layer. The investigation comprised the influence of cutting speed on surface integrity microhardness in dry machining. The tested material was duplex stainless steel (DSS) with two-phase, ferritic-austenitic structure. The tests have been performed under production conditions during machining of parts ...

  8. Predicting the surface roughness in the dry machining of duplex stainless steel (DSS

    Directory of Open Access Journals (Sweden)

    G. Krolczyk

    2013-04-01

    Full Text Available This paper examines the influence of cutting parameters, namely cutting speed, feed and depth of cut onto surface roughness after DSS turning process. The study included developing a mathematical model to determine the surface roughness. Verification research has been carried out on CNC lathe; hence the test plan has been adjusted to the possibility of programmable machines controlling GE Fanuc Series 0-T. The comparison of results obtained by given experimental plan was performed in industrial company.

  9. A Development-Oriented IS Evaluation Approach: Case Demonstration for DSS

    OpenAIRE

    Shah J Miah; Justin Debuse; Don Kerr

    2012-01-01

    Information systems (IS) development research needs a broader conceptual lens for evaluating IS design qualities. Most conventional IS evaluation approaches are focused on narrow objectives, such as the process and content rather than the development process as a whole. This paper describes a qualitative evaluation of a new approach that extends evaluation strategies to incorporate development phases, specifically within decision support systems (DSS) development. The conceptual approach is b...

  10. Sea surface freshening inferred from SMOS and ARGO salinity: impact of rain

    Directory of Open Access Journals (Sweden)

    J. Boutin

    2013-02-01

    Full Text Available The sea surface salinity (SSS measured from space by the Soil Moisture and Ocean Salinity (SMOS mission has recently been revisited by the European Space Agency first campaign reprocessing. We show that, with respect to the previous version, biases close to land and ice greatly decrease. The accuracy of SMOS SSS averaged over 10 days, 100 × 100 km2 in the open ocean and estimated by comparison to ARGO (Array for Real-Time Geostrophic Oceanography SSS is on the order of 0.3–0.4 in tropical and subtropical regions and 0.5 in a cold region. The averaged negative SSS bias (−0.1 observed in the tropical Pacific Ocean between 5° N and 15° N, relatively to other regions, is suppressed when SMOS observations concomitant with rain events, as detected from SSM/Is (Special Sensor Microwave Imager rain rates, are removed from the SMOS–ARGO comparisons. The SMOS freshening is linearly correlated to SSM/Is rain rate with a slope estimated to −0.14 mm−1 h, after correction for rain atmospheric contribution. This tendency is the signature of the temporal SSS variability between the time of SMOS and ARGO measurements linked to rain variability and of the vertical salinity stratification between the first centimeter of the sea surface layer sampled by SMOS and the 5 m depth sampled by ARGO. However, given that the whole set of collocations includes situations with ARGO measurements concomitant with rain events collocated with SMOS measurements under no rain, the mean −0.1 bias and the negative skewness of the statistical distribution of SMOS minus ARGO SSS difference are very likely the mean signature of the vertical salinity stratification. In the future, the analysis of ongoing in situ salinity measurements in the top 50 cm of the sea surface and of Aquarius satellite SSS are expected to provide complementary information about the sea surface salinity stratification.

  11. To Make Good Decision: A Group DSS for Multiple Criteria Alternative Rank and Selection

    Directory of Open Access Journals (Sweden)

    Chen-Shu Wang

    2015-01-01

    Full Text Available Decision making is a recursive process and usually involves multiple decision criteria. However, such multiple criteria decision making may have a problem in which partial decision criteria may conflict with each other. An information technology, such as the decision support system (DSS and group DSS (GDSS, emerges to assist decision maker for decision-making process. Both the DSS and GDSS should integrate with a symmetrical approach to assist decision maker to take all decision criteria into consideration simultaneously. This study proposes a GDSS architecture named hybrid decision-making support model (HDMSM and integrated four decision approaches (Delphi, DEMATEL, ANP, and MDS to help decision maker to rank and select appropriate alternatives. The HDMSM consists of five steps, namely, criteria identification, criteria correlation calculation, criteria evaluation, critical criteria selection, and alternative rank and comparison. Finally, to validate the proposed feasibility of the proposed model, this study also conducts a case study to find out the important indexes of corporate social responsibility (CSR from multiple perspectives. As the case study demonstrates the proposed HDMSM enables a group of decision makers to implement the MCDM effectively and help them to analyze the relation and degree of mutual influence among different evaluation factors.

  12. Land use planning in Ahar area (Iran using MicroLEIS DSS

    Directory of Open Access Journals (Sweden)

    S. Oustan

    2008-09-01

    Full Text Available The decision support system, MicroLEIS DSS, was applied to evaluate the land use planning in Ahar area, East Azarbaijan. In this way 6 agro-ecological land evaluation models constituents of this DSS software were selected in order to make strategies related to land evaluation at a regional level, such as segregation of agricultural lands, restoration of marginal areas, diversification of crop rotation, and identification of vulnerability areas. Results obtained from each evaluation models are presented and discussed in this research work. Soil morphological and analytical data were collected from 44 soil profiles representative of the study area and stored in SDBm plus database. Three control sections: 0-50, 25-50, and 0-100 cm were calculated by ‘soil layer generator’ to apply and run the models. Results show that in Ahar area, 45% of the total extension was classified as good capability land for agricultural uses. However, almost 12% of total area must be reforested by suitable shrub species, and not dedicated to agriculture, to minimize the land degradation. Additionally, soils with vertic properties used to present an excellent capability for most of the traditional crops. Wheat-alfalfa-soybean was selected as the best crop rotation. In summary, MicroLEIS DSS tool appears to be useful in semi-arid regions, such as East Azarbaijan (Iran, to formulate sustaining agro-ecological systems.

  13. A New High-Frequency Search for Galactic Center Millisecond Pulsars using DSS-43

    Science.gov (United States)

    Lemley, Cameron; Prince, Thomas Allen; Majid, Walid A.; Murchikova, Elena

    2016-01-01

    The primary 70-meter Deep Space Network antenna (DSS-43) in Canberra, Australia was equipped with a new high-frequency (18-28 GHz) receiver system in May 2015 for use in a search for Galactic Center (GC) millisecond pulsars. The primary motivation for this search is that a pulsar in the Galactic Center region (especially one that is gravitationally bound to the massive black hole at the GC) would provide unprecedented tests of gravity in the strong-field regime and would offer an entirely new tool for probing the characteristics of the Galactic Center region. Preparation for the GC pulsar search has involved the development of a single-pulse search pipeline that integrates tools from both Fortran and Python as well as the implementation of this pipeline on high performance CPUs. The original version of the search pipeline was developed using Vela Pulsar data from DSS-43, and a more refined version that relies upon chi-squared fitting techniques was ultimately developed using Crab Pulsar data. Future work will involve continued testing of the single-pulse search pipeline using data from the rotating radio transient (RRAT) J1819-1458, the characterization of RRAT pulses using high time resolution data from the new receiver system on DSS-43, and ultimately the analysis of high-frequency data using the existing pipeline to search for millisecond pulsars in the Galactic Center.

  14. 登陆作战辅助决策系统%DSS for Landing Battle

    Institute of Scientific and Technical Information of China (English)

    袁小虎; 刘典斗; 何友金

    2009-01-01

    Owe to mercurial air-sea environment during landing battles, decision support system (DSS) has become a necessary method for the validity and time utility of landing battle's decision-making. Analyzed the requirements of landing battle to DSS of air-sea environment, and ensured the system structure based on date base, model base and man-machine interface. Lastly, DSS was adopted based on improved BP neural network technology decision-making method, and the system runned well and has made good decision-making effects.%登陆作战中的大气海洋环境复杂多样,其必须借助辅助决策手段保证决策的正确性和时效性.分析登陆作战对大气海洋环境辅助决策的需求,确定基于数据库、模型库和人机界面的系统结构.最后,开发采用基于改进BP神经网络技术决策方法的辅助决策系统,该系统运行良好,能取得较好的决策效果.

  15. An integrated information management system based DSS for problem solving and decision making in open & distance learning institutions of India

    Directory of Open Access Journals (Sweden)

    Pankaj Khanna

    2014-04-01

    Full Text Available An integrated information system based DSS is developed for Open and Distance Learning (ODL institutions in India. The system has been web structured with the most suitable newly developed modules. A DSS model has been developed for solving semi-structured and unstructured problems including decision making with regard to various programmes and activities operating in the ODLIs. The DSS model designed for problem solving is generally based on quantitative formulas, whereas for problems involving imprecision and uncertainty, a fuzzy theory based DSS is employed. The computer operated system thus developed would help the ODLI management to quickly identify programmes and activities that require immediate attention. It shall also provide guidance for obtaining the most appropriate managerial decisions without any loss of time. As a result, the various subsystems operating in the ODLI are able to administer its activities more efficiently and effectively to enhance the overall performance of the concerned ODL institution to a new level.

  16. Mesoscale variability of water masses in the Arabian Sea as revealed by ARGO floats

    Directory of Open Access Journals (Sweden)

    X. Carton

    2012-03-01

    Full Text Available By analysing ARGO float data over the last four years, a few aspects of the mesoscale variability of water masses in the Arabian Sea are described.

    The Red Sea Outflow Water (RSOW is concentrated in the Southwestern Gulf of Aden, in particular when a cyclonic gyre predominates in this region. Salinities of 36.5 and temperatures of 16 °C are found in this area at depths between 600 and 1000 m. RSOW is more dilute in the eastern part of the Gulf, where intense and relatively barotropic gyres mix it with Indian ocean Central Water. RSOW is also detected along the northeastern coast of Socotra, and fragments of RSOW are found between one and three degrees of latitude north of this island. In the whole Gulf of Aden, the correlation between the deep motions of the floats and the sea-level anomaly measured by altimetry is strong, at regional scale. The finer scale details of the float trajectories are not sampled by altimetry and are often related to the anomalous water masses that the floats encounter.

    The Persian Gulf Water (PGW is found in the float profiles near Ras ash Sharbatat (near 57° E, 18° N, again with 36.5 in salinity and about 18–19 °C in temperature. These observations were achieved in winter when the southwestward monsoon currents can advect PGW along the South Arabian coast. Fragments of PGW were also observed in the Arabian Sea between 18 and 20° N and 63 and 65° E in summer, showing that this water mass can escape the Gulf of Oman southeastward, during that season.

    Kinetic energy distributions of floats with respect to distance or angle share common features between the two regions (Gulf of Aden and Arabian Sea, in particular peaks at 30, 50 and 150 km scales and along the axis of monsoon currents. Hydrological measurements by floats are also influenced by the seasonal variations of PGW and RSOW in these regions.

  17. Global representation of tropical cyclone-induced short-term ocean thermal changes using Argo data

    Science.gov (United States)

    Cheng, L.; Zhu, J.; Sriver, R. L.

    2015-09-01

    Argo floats are used to examine tropical cyclone (TC) induced ocean thermal changes on the global scale by comparing temperature profiles before and after TC passage. We present a footprint method that analyzes cross-track thermal responses along all storm tracks during the period 2004-2012. We combine the results into composite representations of the vertical structure of the average thermal response for two different categories: tropical storms/tropical depressions (TS/TD) and hurricanes. The two footprint composites are functions of three variables: cross-track distance, water depth and time relative to TC passage. We find that this footprint strategy captures the major features of the upper-ocean thermal response to TCs on timescales up to 20 days when compared against previous case study results using in situ measurements. On the global scale, TCs are responsible for 1.87 PW (11.05 W m-2) of heat transfer annually from the global ocean to the atmosphere during storm passage (0-3 days). Of this total, 1.05 ± 0.20 PW (4.80 ± 0.85 W m-2) is caused by TS/TD and 0.82 ± 0.21 PW (6.25 ± 1.5 W m-2) is caused by hurricanes. Our findings indicate that ocean heat loss by TCs may be a substantial missing piece of the global ocean heat budget. Changes in ocean heat content (OHC) after storm passage are estimated by analyzing the temperature anomalies during wake recovery following storm events (4-20 days after storm passage) relative to pre-storm conditions. Results indicate the global ocean experiences a 0.75 ± 0.25 PW (5.98 ± 2.1 W m-2) heat gain annually for hurricanes. In contrast, under TS/TD conditions, the ocean experiences 0.41 ± 0.21 PW (1.90 ± 0.96 W m-2) ocean heat loss, suggesting the overall oceanic thermal response is particularly sensitive to the intensity of the event. The ocean heat uptake caused by all storms during the restorative stage is 0.34 PW.

  18. Pattern-recognition techniques applied to performance monitoring of the DSS 13 34-meter antenna control assembly

    Science.gov (United States)

    Mellstrom, J. A.; Smyth, P.

    1991-01-01

    The results of applying pattern recognition techniques to diagnose fault conditions in the pointing system of one of the Deep Space network's large antennas, the DSS 13 34-meter structure, are discussed. A previous article described an experiment whereby a neural network technique was used to identify fault classes by using data obtained from a simulation model of the Deep Space Network (DSN) 70-meter antenna system. Described here is the extension of these classification techniques to the analysis of real data from the field. The general architecture and philosophy of an autonomous monitoring paradigm is described and classification results are discussed and analyzed in this context. Key features of this approach include a probabilistic time-varying context model, the effective integration of signal processing and system identification techniques with pattern recognition algorithms, and the ability to calibrate the system given limited amounts of training data. Reported here are recognition accuracies in the 97 to 98 percent range for the particular fault classes included in the experiments.

  19. Influence of DSSs on urban air quality in China during 2005-2010 and analysis of a severe DSS event

    Science.gov (United States)

    Wang, Wei; Li, Liang; Pan, Benfeng; Chen, Shuang; Wang, Ruibin; Li, Jianjun; Zheng, Haohao

    2013-01-01

    In each year, Dust and Sandstorms (DSSs) triggered by cold air masses enhance particle concentration over large areas in China during spring and winter. In this paper, daily Air Pollution Index (API) of 113 major cities in China during dust events was analyzed to present the influence of DSSs on urban air quality. From 2005 to 2010, a total of 93 dust events were identified, on average there are approximately 16 dust events in a year. The number of total polluted days caused by DSSs in 113 major cities ranged from 147 to 546 each year, with maximum in 2010 and minimum in 2007. The number of total heavily polluted days caused by DSSs in major cities ranged from 14 to 78 each year, with maximum in 2010 and minimum in 2005. DSSs affected major cities most severely during March to May. Furthermore, a typical DSS observed from 26 to 31 May 2008 was described in terms of meteorological features and PM10 concentration as well as API levels of 113 major cities. This event lead to high PM10 concentration and low visibility over major cities, with maximum daily PM10 concentration of 1511 μg m-3 in Chifeng on 28 May, which was directly caused by strong wind in front of surface high pressure system passing through sand source areas in Mongolia and North China. The most severe pollution occurred on 29 May, with 38 cities polluted and 7 cities heavily polluted.

  20. Gamma rays from dark matter annihilation in the Draco and observability at ARGO

    International Nuclear Information System (INIS)

    The CACTUS experiment recently observed a gamma ray excess above 50 GeV from the direction of the Draco dwarf spheroidal galaxy. Considering that Draco is dark matter dominated, the gamma rays may be generated through dark matter annihilation in the Draco halo. In the framework of the minimal supersymmetric extension of the standard model we explore the parameter space to account for the gamma ray signals at CACTUS. We find that the neutralino mass is constrained to be approximately in the range between 100 GeV∝400 GeV and a sharp central cuspy of the dark halo profile in Draco is necessary to explain the CACTUS results. We then discuss further constraints on the supersymmetric parameter space by observations at the ground-based ARGO detector. It is found that the parameter space can be strongly constrained by ARGO if no excess from Draco is observed above 100 GeV. (orig.)

  1. Gamma rays from dark matter annihilation in the Draco and observability at ARGO

    CERN Document Server

    Bi, X J; Zhang, X; Bi, Xiao-Jun; Hu, Hong-Bo; Zhang, Xinmin

    2006-01-01

    The CACTUS experiment recently observed a gamma ray excess above 50 GeV from the direction of the Draco dwarf spheroidal galaxy. Considering that Draco is dark matter dominated the gamma rays may be generated through dark matter annihilation in the Draco halo. In the framework of the minimal supersymmetric extension of the standard model we explore the parameter space to account for the gamma ray signals at CACTUS. We find that the neutralino mass is constrained to be approximately in the range between 100 GeV ~ 400 GeV and a sharp central cuspy of the dark halo profile in Draco is necessary to explain the CACTUS results. We then discuss further constraints on the supersymmetric parameter space by observations at the ground based ARGO detector. It is found that the parameter space can be strongly constrained by ARGO if no excess from Draco is observed above 100 GeV.

  2. Final design of the wavefront sensor unit for ARGOS, the LBT's LGS facility

    Science.gov (United States)

    Busoni, Lorenzo; Bonaglia, Marco; Esposito, Simone; Carbonaro, Luca; Rabien, Sebastian

    2010-07-01

    In this paper we present the final design of the WFS unit of LBT's ARGOS facility, that will implement a GLAO system using 3 Rayleigh pulsed beacons. The ARGOS WFS is composed of two main subunits: 1) a large dichroic window that deflects the laser beam toward the WFS and transmit the visible and near-infrared wavelength to the MOSimager LUCIFER and 2) the SH-WFS that collects the backscattered light of the 3 beacons and combines the beams on a single lenslet array and detector. The WFS unit includes Pockels cells for the range gating of the laser beams, field and pupil stabilizers to compensate for the fast jitter of the laser beams and for optical flexures and a calibration unit to check the internal alignment; this unit will be also used for closed-loop laboratory tests using a MEMS-DM.

  3. The role of Argo steric sea level within the global sea level budget

    Science.gov (United States)

    von Schuckmann, K.; Sallée, J.-B.; Cabanes, C.; Le Traon, P.-Y.; Gaillard, F.; Speich, S.; Hamon, M.

    2012-04-01

    Precise estimations of global ocean indicators (GOIs) such as global ocean heat content (GOHC) and global steric sea level (GSSL) are necessary to observe the ocean's role in the Earth's climate system. To improve accuracy of these estimations, our knowledge of deep ocean and regional contributions to GOIs needs to be quantified. Data from the global Argo array are used here to analyze these contributionsduring the period 2005 to 2010. GOHC/GMSH rise increases by 25% /35% for the upper 2000m depth compared to the upper ocean 700m depth. A comparison of Argo steric sea level to total sea level from satellite altimetry (AVISO) and ocean mass (GRACE) is performed during this period. We could close the global and regional sea level budgets for 2005 to 2010 in terms of 6-year trends. Results show that largest correlation of global GSSL, ocean mass and global total sea level can be observed in the global tropical basin. Differences of the 6-year trend between global mean total sea level and GSSL in this basin are mostly explained by Argo sampling issues, especially in the - by Argo under sampled - Indonesian Archipelago. The differences of the 6-year trend in the Southern Ocean can be attributed to mass changes and deep ocean steric changes, whereas in the Northern Ocean mass changes clearly dominate decadal and longer-term variability. The results are only valid under the assumption that no systematic errors remain in either one of the global observing systems, although the comparison of all three observing systems indicates that these errors appear to be small during the years 2005 to 2010.

  4. Using Altimetry, GRACE and Argo to assess stationary circulation and transports in the North Atlantic

    OpenAIRE

    Richter, Falk; Sidorenko, Dmitry; Schröter, Jens

    2010-01-01

    The data available from satellite altimetry and Argo profiling buoys are combined into Inverse Finite Element Ocean model (IFEOM) for each of the years 1999 and 2008. The model solves for temperature and salinity fields that are close to measurements, respects stationary dynamical balances, and simultaneously produces estimates of the circulation. Several experiments have been performed to reconstruct the interannual variability. We show, that including altimetry improves the circulation pict...

  5. Application of Argo Data in the Analysis of Water Masses in the Northwest Pacific Ocean.

    OpenAIRE

    Sun, Chaohui; Xu, Jianping; Liu, Zenghong; Tong, Mingrong; Zhu, Bokang

    2008-01-01

    The temperature and salinity distributions, and the water mass structures in Northwest Pacific Ocean are studied using the temperature and salinity data obtained by Argo profiling floats. The T-S relation in this region indicates there exist 8 water masses,they are the North Pacific Tropical Surface Water (NPTSW), North P, acific Subsurface Water (NPSSW),North Pacific Intermediate Water (NPIW),North Pacific Subtropical Water (NPSTW), North Pacific Deep Water (NPDW) and Equatorial Surface Wate...

  6. 222Rn daughters influence on scaler mode of the ARGO-YBJ detector

    CERN Document Server

    Giroletti, Elio; Cattaneo, Claudio; Liguori, Giuseppe; Salvini, Paola; Vallania, Piero; Vigorito, Carlo

    2011-01-01

    The ARGO-YBJ experiment is a full coverage air shower array; its lowest energy threshold is reached using the "scaler mode technique". Working in this mode, the signals generated by any particle hitting each cluster are put in coincidence every 150 ns and read by four independent scaler channels, giving the counting rates of multiplicity \\geq1, \\geq2, \\geq3 and \\geq4 (C1, C2, C3 and C4, respectively). The study of these counting rates pointed out a different behaviour of C1 respect to C2, C3 and C4, suggesting that C1 is detecting not only cosmic rays. This work shows that the radon (222Rn) gamma emitter daughters present in the ARGO-YBJ building air are contributing to C1 counts at the level of 1 Hz each Bq/m3 of radon. The uncertainty about this contribution is great, because of the high variability of 222Rn concentration and the building ventilation. The radon monitoring will allow the C1 correction improving the sensitivity of the ARGO-YBJ experiment at its lowest energy threshold.

  7. SMOS validation using SSS data from Barcelona World Race and Argo profilers

    Science.gov (United States)

    Umbert, M.; Ballabrera, J.; Fernandez, P.; Salat, J.; Salvador, J.

    2012-04-01

    The organisers of the Barcelona World Race (BWR), the Institute of Marine Sciences (ICM-CSIC) and the Maritime Catalan Forum (FMC) agreed on equiping the FMC boat, participating in the race, with a SeaBird MiniCTD. The idea was for the first time to explore how such oceanic races could help to monitor surface temperature and salinity all around the world ocean in real time. The boat spent 112 days to complete the rond trip, sending 12-30 real-time samples/day via ARGOS satellites, using a transmitter developed at the ICM. Data was also stored in the instrument, at 192 samples/day to allow further final global analyses. In the SMOS (Soil Moisture and Ocean Salinity) satellite mission processing chain, sea surface salinity (SSS) values are retrieved from brightness temperature data at level 2 (L2). Global maps of SSS are being generated at level 3 (L3) using spatial and temporal weighted averages. Finally, improved representations of the SSS field are obtained at level 4 (L4) where satellite data is blended with data from other sensors. In the present study, validation of L2, L3 and L4 products using data from BWR and ARGO buoys is presented, covering the race period from January to April 2011. Differences between these two sets of data are also investigated as the uppermost robust measurements from Argo profilers have larger depths than the ones associated to the BWR boat.

  8. The Argo Simulation: II. The Early Build-up of the Hubble Sequence

    CERN Document Server

    Feldmann, Robert

    2014-01-01

    The Hubble sequence is a common classification scheme for the structure of galaxies. Despite the tremendous usefulness of this diagnostic, we still do not fully understand when, where, and how this morphological ordering was put in place. Here, we investigate the morphological evolution of a sample of 22 high redshift ($z\\geq3$) galaxies extracted from the Argo simulation. Argo is a cosmological zoom-in simulation of a group-sized halo and its environment. It adopts the same high resolution ($\\sim10^4$ M$_\\odot$, $\\sim100$ pc) and sub-grid physical model that was used in the Eris simulation but probes a sub-volume almost ten times bigger with as many as 45 million gas and star particles in the zoom-in region. Argo follows the early assembly of galaxies with a broad range of stellar masses ($\\log M_{\\star}/{\\rm M}_{\\odot}\\sim8-11$ at $z\\simeq3$), while resolving properly their structural properties. We recover a diversity of morphologies, including late-type/irregular disc galaxies with flat rotation curves, s...

  9. Study of the diffuse gamma-ray emission from the Galactic plane with ARGO-YBJ

    CERN Document Server

    Bartoli, B; Bi, X J; Branchini, P; Budano, A; Camarri, P; Cao, Z; Cardarelli, R; Catalanotti, S; Chen, S Z; Chen, T L; Creti, P; Cui, S W; Dai, B Z; D'Amone, A; Danzengluobu,; De Mitri, I; Piazzoli, B D'Ettorre; Di Girolamo, T; Di Sciascio, G; Feng, C F; Feng, Zhaoyang; Feng, Zhenyong; Gou, Q B; Guo, Y Q; He, H H; Hu, Haibing; Hu, Hongbo; Iacovacci, M; Iuppa, R; Jia, H Y; Labaciren,; Li, H J; Liguori, G; Liu, C; Liu, J; Liu, M Y; Lu, H; Ma, L L; Ma, X H; Mancarella, G; Mari, S M; Marsella, G; Martello, D; Mastroianni, S; Montini, P; Ning, C C; Panareo, M; Perrone, L; Pistilli, P; Ruggieri, F; Salvini, P; Santonico, R; Shen, P R; Sheng, X D; Shi, F; Surdo, A; Tan, Y H; Vallania, P; Vernetto, S; Vigorito, C; Wang, H; Wu, C Y; Wu, H R; Xue, L; Yang, Q Y; Yang, X C; Yao, Z G; Yuan, A F; Zha, M; Zhang, H M; Zhang, L; Zhang, X Y; Zhang, Y; Zhao, J; Zhaxiciren,; Zhaxisangzhu,; Zhou, X X; Zhu, F R; Zhu, Q Q; Zizzi, G

    2015-01-01

    The events recorded by ARGO-YBJ in more than five years of data collection have been analyzed to determine the diffuse gamma-ray emission in the Galactic plane at Galactic longitudes 25{\\deg} < l < 100{\\deg} and Galactic latitudes . The energy range covered by this analysis, from ~350 GeV to ~2 TeV, allows the connection of the region explored by Fermi with the multi-TeV measurements carried out by Milagro. Our analysis has been focused on two selected regions of the Galactic plane, i.e., 40{\\deg} < l < 100{\\deg} and 65{\\deg} < l < 85{\\deg} (the Cygnus region), where Milagro observed an excess with respect to the predictions of current models. Great care has been taken in order to mask the most intense gamma-ray sources, including the TeV counterpart of the Cygnus cocoon recently identified by ARGO-YBJ, and to remove residual contributions. The ARGO-YBJ results do not show any excess at sub-TeV energies corresponding to the excess found by Milagro, and are consistent with the predictions of ...

  10. Spatial scales of temperature and salinity variability estimated from Argo observations

    Science.gov (United States)

    Ninove, F.; Le Traon, P.-Y.; Remy, E.; Guinehut, S.

    2016-01-01

    Argo observations from 2005 to 2013 are used to characterize spatial scales of temperature and salinity variations from the surface down to 1300 m. Simulations are first performed to analyze the sensitivity of results to Argo sampling; they show that several years of Argo observations are required to estimate spatial scales of ocean variability over 20° × 20° boxes. Spatial scales are then computed over several large-scale areas. Zonal and meridional spatial scales (Lx and Ly which are zero crossing of covariance functions) vary as expected with latitudes. Scales are of about 100 km at high latitudes and more of 700 km in the Indian and Pacific equatorial-tropical regions. Zonal and meridional scales are similar except in tropical-equatorial regions where zonal scales are much larger (by a factor of 2 to 3) than meridional scales. Spatial scales are the largest close to the surface and have a general tendency for temperature to increase in deeper layers. There are significant differences between temperature and salinity scales, in particular, in the deep ocean. Results are consistent with previous studies based on sparse in situ observations or satellite altimetry. They provide, however, for the first time a global description of temperature and salinity scales of variability and a characterization of their variations according to depths.

  11. Decision Support System Research and Development Network for Agricultural and Natural Resource Management in Thailand: A TRF-DSS Experience

    Directory of Open Access Journals (Sweden)

    Thaworn Onpraphai

    2012-04-01

    Full Text Available This paper aims to introduce the Decision Support System (DSS, which is an area informatics approach to area studies, and the research network complex based on DSS’s application in Thailand. In particular, the paper presents and discusses current activities of the DSS research network at the national level in Thailand rather than being a theoretical and analytical study of the DSS mechanism or its cases. DSS has wide applications in Thailand, extending to various fields such as agricultural and natural resource management, economic and social management, historical and cultural preservation, and so on. DSS generally refers to a support system embedded into a computer system for providing intellectual resources with the appropriate numerical model necessary for decision making in production activities. Agricultural and natural resources have been the foundation of social and economic development in Thailand since the country’s first national plan in the 1960s. Decision making to maintain agricultural productivity as well as to protect natural resources requires well-integrated data sets. The Thailand Research Fund (TRF established a DSS research and development network (TRF-DSS in 2002 to help various research teams in Thailand develop DSS tools and components for addressing agricultural and natural resource management issues. Using a “systems” approach, the DSS framework allows researchers and users to identify and integrate key components as well as to define databases and model-base management systems. This paper focuses on the TRF-DSS research and development network, which consists of 12 universities, two line agencies in Thailand, and a line agency in Cambodia. During 2002–10, a total of 59 research projects were granted a budget allocation of 140.1 million baht, and a budget of 15.4 million baht was allocated to support activities of the network. In addition, 10 projects were funded to carry out postproject activities, with a

  12. Implementation of GIS-DSS PRANA within sustainable rehabilitation of radioactive contaminated territories

    International Nuclear Information System (INIS)

    Full text: Analysis of the current situation in contaminated farms and settlements of Bryansk region is based on the monitoring data and model estimates. Model assessments of agricultural produce contamination, doses to the local population, radiological risk and results of countermeasure (CM) implementation have been carried out with the use of PRANA GIS-DSS. Applied Geographic Information System (GIS) PRANA is a Decision Support System (DSS) for implementation within the rehabilitation of radioactive contaminated territories. PRANA has been introduced for practical use in Bryansk as a GIS-DSS system for monitoring networking support and countermeasure analysis. The main blocks of the PRANA DSS are: libraries of electronic maps, including different layers of vector maps of landuse for all contaminated districts of Bryansk region: Novozybkov, Klintsy, Gordeevsky, Krasnogorsky, Zlynkovsky and Klimovsky (more than 30000 polygons of vector electronic maps); databases (radioecological, ecological, economic, demographic and other monitoring data and model parameters, including attributive information of vector electronic maps); model blocks for assessing: contamination of agricultural production, external and internal doses to the local population, radiological risks and corresponding results of CMs implementation; evaluation of CMs effectiveness and decision-making support an protection of the population and rehabilitation of radioactive contaminated territories both on local and regional/district levels (from separate settlement/field up to group of settlements/farms and region as a whole). The following 'risk indices' are considered within decision-making an Risk Based Land Management (RBLM) with the use of PRANA DSS: surface density contamination of territory with radionuclides (137Cs, 90Sr); contamination of agricultural production (plant growing and animal husbandry, including farm and private production); external and internal doses to the local population (for

  13. Analysis of Vertical Dynamics in the Northern Baltic Sea based on 3D Modelling and Data from Shallow-Water Argo Floats

    Science.gov (United States)

    Westerlund, Antti; Tuomi, Laura

    2016-04-01

    Vertical mixing is a challenge for ocean models. 3D hydrodynamic models often produce considerable errors in mixed layer depths and vertical temperature structure that can be related to the vertical turbulence parameterisation. These errors can be pronounced in areas with complex hydrography. In the Baltic Sea, for example, there are high horizontal and vertical salinity gradients. Furthermore, thermocline and halocline are located at different depths. This produces stratification conditions challenging for all ocean models. We studied vertical mixing with modelling experiments and new observational data. NEMO 3D ocean model has been set up at Finnish Meteorological Institute (FMI) for the Baltic Sea, based on the NEMO Nordic configuration. The model has been discretized on a Baltic Sea - North Sea grid with 2 nautical mile resolution and 56 vertical layers, using FMI-HIRLAM atmospheric forcing. The observational data for Baltic Sea off-shore areas is sparse and new methods are needed to collect data for model validation and development. FMI has been testing Argo floats in the Baltic Sea since 2011 in order to increase the amount of observed vertical profiles of salinity and temperature. This is the first time Argo floats have been successfully used in the brackish, shallow waters of the Baltic Sea. This new data set is well suited for evaluating the capability of hydrodynamic models to produce the vertical structure of temperature. It provides a time series of profiles from the area of interest with good temporal resolution, showing the structure of temperature in the water column throughout the summer. We found that NEMO was able to reproduce the general features of the seasonal temperature variations in the study area, when meteorological forcing was accurate. We ran the model with different vertical turbulence parameterisations. The k-ɛ and k-ω schemes showed clear differences, but neither proved superior. While sea surface temperature was better simulated

  14. iNOS-dependent increase in colonic mucus thickness in DSS-colitic rats.

    Directory of Open Access Journals (Sweden)

    Olof Schreiber

    Full Text Available AIM: To investigate colonic mucus thickness in vivo in health and during experimental inflammatory bowel disease. METHODS: Colitis was induced with 5% DSS in drinking water for 8 days prior to experiment, when the descending colonic mucosa of anesthetized rats was studied using intravital microscopy. Mucus thickness was measured with micropipettes attached to a micromanipulator. To assess the contributions of NOS and prostaglandins in the regulation of colonic mucus thickness, the non-selective NOS-inhibitor L-NNA (10 mg/kg bolus followed by 3 mg/kg/h, the selective iNOS-inhibitor L-NIL (10 mg/kg bolus followed by 3 mg/kg/h and the non-selective COX-inhibitor diclofenac (5 mg/kg were administered intravenously prior to experiment. To further investigate the role of iNOS in the regulation of colonic mucus thickness, iNOS -/- mice were used. RESULTS: Colitic rats had a thicker firmly adherent mucus layer following 8 days of DSS treatment than untreated rats (88±2 µm vs 76±1 µm. During induction of colitis, the thickness of the colonic mucus layer initially decreased but was from day 3 significantly thicker than in untreated rats. Diclofenac reduced the mucus thickness similarly in colitic and untreated rats (-16±5 µm vs -14±2 µm. While L-NNA had no effect on colonic mucus thickness in DSS or untreated controls (+3±2 µm vs +3±1 µm, L-NIL reduced the mucus thickness significantly more in colitic rats than in controls (-33±4 µm vs -10±3 µm. The importance of iNOS in regulating the colonic mucus thickness was confirmed in iNOS-/- mice, which had thinner colonic mucus than wild-type mice (35±3 µm vs 50±2 µm, respectively. Furthermore, immunohistochemistry revealed increased levels of iNOS in the colonic surface epithelium following DSS treatment. CONCLUSION: Both prostaglandins and nitric oxide regulate basal colonic mucus thickness. During onset of colitis, the thickness of the mucus layer is initially reduced followed by an i

  15. LandCaRe-DSS - model based tools for irrigation management under climate change

    Science.gov (United States)

    Dotterweich, Markus; Wilkinson, Kristina; Cassel, Martin; Scherzer, Jörg; Köstner, Barbara; Berg, Michael; Grocholl, Jürgen

    2015-04-01

    Climate change is expected to have a strong influence on agricultural systems in the future. It will be important for decision makers and stakeholders to assess the impact of climate change at the farm and regional level in order to facilitate and maintain a sustainable and profitable farming infrastructure. Climate change impact studies have to incorporate aspects of uncertainty and the underlying knowledge is constantly expanding and improving. Decision support systems (DSS) with flexible data bases are therefore a useful tool for management and planning: different models can be applied under varying boundary conditions within a conceptual framework and the results can be used e.g. to show the effects of climate change scenarios and different land management options. Within this project, the already existing LandCaRe DSS will be further enhanced and improved. A first prototype had been developed for two regions in eastern Germany, mainly to show the effects of climate change on yields, nutrient balances and farm economy. The new model version will be tested and applied for a region in north-western Germany (Landkreis Uelzen) where arable land makes up about 50% of overall land-use and where 80 % of the arable land is already irrigated. For local decision makers, it will be important to know how water demand and water availability are likely to change in the future: Is more water needed for irrigation? Is more water actually available for irrigation? Will the existing limits for ground water withdrawal be sufficient for farmers to irrigate their crops? How can the irrigation water demand be influenced by land management options like the use of different crops and varieties or different farming and irrigation techniques? The main tasks of the project are (I) the integration of an improved irrigation model, (II) the development of a standardized interface to apply the DSS in different regions, (III) to optimize the graphical user interface, (IV) to transfer and

  16. Energy consumption analysis of the Venus Deep Space Station (DSS-13)

    Science.gov (United States)

    Hayes, N. V.

    1983-01-01

    This report continues the energy consumption analysis and verification study of the tracking stations of the Goldstone Deep Space Communications Complex, and presents an audit of the Venus Deep Space Station (DSS 13). Due to the non-continuous radioastronomy research and development operations at the station, estimations of energy usage were employed in the energy consumption simulation of both the 9-meter and 26-meter antenna buildings. A 17.9% decrease in station energy consumption was experienced over the 1979-1981 years under study. A comparison of the ECP computer simulations and the station's main watt-hour meter readings showed good agreement.

  17. Microhardness changes gradient of the duplex stainless steel (DSS surface layer after dry turning

    Directory of Open Access Journals (Sweden)

    G. Krolczyk

    2014-10-01

    Full Text Available The article presents the gradient of microhardness changes as a function of the distance from the material surface after turning with a wedge provided with a coating with a ceramic intermediate layer. The investigation comprised the influence of cutting speed on surface integrity microhardness in dry machining. The tested material was duplex stainless steel (DSS with two-phase, ferritic-austenitic structure. The tests have been performed under production conditions during machining of parts for electric motors and deep-well pumps.

  18. 远洋不定期船经营DSS系统的分析与设计%The DSS analysis and design on ocean tramp operation

    Institute of Scientific and Technical Information of China (English)

    吕靖; 王蓬; 王腾飞

    2000-01-01

    针对远洋不定期船经营决策中的实际问题,结合我国航运企业特点,通过对船舶不定期船生产经营活动决策过程中所存在的实际问题的系统分析,实现了远洋不定期船经营决策的DSS辅助决策支持.%According to the existing problem lying in the shipping company's tramp operation decision and to the general features of China's shipping company management, this paper analyses systematically the practical problems lying in the process of tramp operation decision. The DSS assistant-decision support in the shipping company's strategy of operation and development is realized.

  19. A high resolution salinity time series 1993-2012 in the North Atlantic from Argo and Altimeter data

    Science.gov (United States)

    Stendardo, I.; Rhein, M.; Hollmann, R.

    2016-04-01

    The study of salinity changes has been hampered by the lack of temporal and spatial resolution of the observations. In order to improve the spatial and temporal distribution of salinity observations, we used the Gravest Empirical Mode (GEM) technique to calculate high-resolution salinity distributions as a function of dynamic height for the period 1993-2012. This technique combined Argo and altimeter data to exploit the relationship between T/S profiles and dynamic height in the North Atlantic. The method was valid in the upper 700 m mainly at and near the pathways of the North Atlantic Current (NAC), but failed in regions with weak stratification or with ambiguities in the T/S relationships. Coherent, multiannual large-scale variability was observed, with many features present in all regions, albeit with weaker amplitudes in the eastern basins. Some of the interannual features in the northeastern Atlantic basins were unrelated to the variability further south and west, pointing to an occasional advection of subtropical water in the eastern Atlantic. Origin and advection of salinity anomalies with the NAC from the North American Basin into the western subpolar North Atlantic are correlated with the state of the North Atlantic Oscillation (NAO) and dampened by the surface freshwater fluxes. Other mechanisms influencing the salinity pattern are the changing location of the subpolar front, also related to the NAO. The large multiyear variability in the 20 year time series obscured any potential trends caused by global warming. Only the Rockall Trough showed a salinity increase of 0.03 per decade.

  20. Fermented milk containing Lactobacillus GG alleviated DSS-induced colitis in mice and activated epidermal growth factor receptor and Akt signaling in intestinal epithelial cells

    Directory of Open Access Journals (Sweden)

    Kazutoyo Yoda

    2012-06-01

    Full Text Available Lactobacillus rhamnosus GG was assessed for its ability to alleviate DSS-induced colitis in mice and activate epidermal growth factor receptor and Akt signaling in intestinal epithelial cells. In this study mice were treated with DSS to induce colitis and they were given Lactobacillus GG fermented milk to assess the effect of probiotic on colitis. Lactobacillus GG fermented milk significantly reduced the colitis associated changes suggesting a protective effect against DSS induced colitis.

  1. Fermented milk containing Lactobacillus GG alleviated DSS-induced colitis in mice and activated epidermal growth factor receptor and Akt signaling in intestinal epithelial cells

    OpenAIRE

    Yoda, Kazutoyo; He, Fang; Miyazawa, Kenji; Hiramatsu, Masaru

    2012-01-01

    Lactobacillus rhamnosus GG was assessed for its ability to alleviate DSS-induced colitis in mice and activate epidermal growth factor receptor and Akt signaling in intestinal epithelial cells. In this study mice were treated with DSS to induce colitis and they were given Lactobacillus GG fermented milk to assess the effect of probiotic on colitis. Lactobacillus GG fermented milk significantly reduced the colitis associated changes suggesting a protective effect against DSS induced colitis.Key...

  2. Accelerated dysbiosis of gut microbiota during aggravation of DSS-induced colitis by a butyrate-producing bacterium.

    Science.gov (United States)

    Zhang, Qianpeng; Wu, Yanqiu; Wang, Jing; Wu, Guojun; Long, Wenmin; Xue, Zhengsheng; Wang, Linghua; Zhang, Xiaojun; Pang, Xiaoyan; Zhao, Yufeng; Zhao, Liping; Zhang, Chenhong

    2016-01-01

    Butyrate-producing bacteria (BPB) are potential probiotic candidates for inflammatory bowel diseases as they are often depleted in the diseased gut microbiota. However, here we found that augmentation of a human-derived butyrate-producing strain, Anaerostipes hadrus BPB5, significantly aggravated colitis in dextran sulphate sodium (DSS)-treated mice while exerted no detrimental effect in healthy mice. We explored how the interaction between BPB5 and gut microbiota may contribute to this differential impact on the hosts. Butyrate production and severity of colitis were assessed in both healthy and DSS-treated mice, and gut microbiota structural changes were analysed using high-throughput sequencing. BPB5-inoculated healthy mice showed no signs of colitis, but increased butyrate content in the gut. In DSS-treated mice, BPB5 augmentation did not increase butyrate content, but induced significantly more severe disease activity index and much higher mortality. BPB5 didn't induce significant changes of gut microbiota in healthy hosts, but expedited the structural shifts 3 days earlier toward the disease phase in BPB5-augmented than DSS-treated animals. The differential response of gut microbiota in healthy and DSS-treated mice to the same potentially beneficial bacterium with drastically different health consequences suggest that animals with dysbiotic gut microbiota should also be employed for the safety assessment of probiotic candidates. PMID:27264309

  3. Determinants of fertility in rural Ethiopia: the case of Butajira Demographic Surveillance System (DSS

    Directory of Open Access Journals (Sweden)

    Worku Alemayehu

    2011-10-01

    Full Text Available Abstract Background Fertility is high in rural Ethiopia. Women in the reproductive age group differed in various characteristics including access to food and encounter to drought which requisite the assessment of determinants of fertility. Methods Reproductive age women were recruited from a DSS, the Butajira DSS database. A DHS maternity history questionnaire was administered on 9996 participants. Data quality was assured besides ethical clearance. Poisson regression crude and adjusted Incidence Rate Ratio with 95 Confidence Interval were used to identify determinants of fertility. Results Delayed marriage, higher education, smaller family, absence of child death experience and living in food-secured households were associated with small number of children. Fertility was significantly higher among women with no child sex preference. However, migration status of women was not statistically significant. Conclusions Policy makers should focus on hoisting women secondary school enrollment and age at first marriage. The community should also be made aware on the negative impact of fertility on household economy, environmental degradation and the country's socio-economic development at large.

  4. Estimating the global oceanic net freshwater flux from Argo and comparing it with satellite-based freshwater flux products

    Science.gov (United States)

    Ren, Li; Hackert, Eric; Arkin, Phillip; Busalacchi, Antonio J.

    2014-11-01

    Following the idea that analysis of in situ information in the salt budget could be used as a surrogate for global "ocean rain gauge," the annual mean oceanic net freshwater flux (E-P) was estimated from the Argo profiles and the wind stress data on a global scale. The comparison between the independent E-P estimation from Argo and the E-P product sets, including the combination of precipitation from TRMM, GPCP, CMAP and evaporation from OAFlux, GSSTF3 and IFREMER and E-P set from NEWS formed from satellite, generally show similar spatial patterns, particularly on the large scale. However, there are differences among the different satellite-based E-P estimates and between satellite estimates and independent in situ estimates. Based on the pattern correlation and the RMSD, the evaporation and precipitation from OAFlux and TRMM agrees best with the E-P estimated from the independent Argo-based estimates.

  5. Evaluation of Argos Telemetry Accuracy in the High-Arctic and Implications for the Estimation of Home-Range Size.

    Directory of Open Access Journals (Sweden)

    Sylvain Christin

    Full Text Available Animal tracking through Argos satellite telemetry has enormous potential to test hypotheses in animal behavior, evolutionary ecology, or conservation biology. Yet the applicability of this technique cannot be fully assessed because no clear picture exists as to the conditions influencing the accuracy of Argos locations. Latitude, type of environment, and transmitter movement are among the main candidate factors affecting accuracy. A posteriori data filtering can remove "bad" locations, but again testing is still needed to refine filters. First, we evaluate experimentally the accuracy of Argos locations in a polar terrestrial environment (Nunavut, Canada, with both static and mobile transmitters transported by humans and coupled to GPS transmitters. We report static errors among the lowest published. However, the 68th error percentiles of mobile transmitters were 1.7 to 3.8 times greater than those of static transmitters. Second, we test how different filtering methods influence the quality of Argos location datasets. Accuracy of location datasets was best improved when filtering in locations of the best classes (LC3 and 2, while the Douglas Argos filter and a homemade speed filter yielded similar performance while retaining more locations. All filters effectively reduced the 68th error percentiles. Finally, we assess how location error impacted, at six spatial scales, two common estimators of home-range size (a proxy of animal space use behavior synthetizing movements, the minimum convex polygon and the fixed kernel estimator. Location error led to a sometimes dramatic overestimation of home-range size, especially at very local scales. We conclude that Argos telemetry is appropriate to study medium-size terrestrial animals in polar environments, but recommend that location errors are always measured and evaluated against research hypotheses, and that data are always filtered before analysis. How movement speed of transmitters affects location

  6. Evaluation of Argos Telemetry Accuracy in the High-Arctic and Implications for the Estimation of Home-Range Size.

    Science.gov (United States)

    Christin, Sylvain; St-Laurent, Martin-Hugues; Berteaux, Dominique

    2015-01-01

    Animal tracking through Argos satellite telemetry has enormous potential to test hypotheses in animal behavior, evolutionary ecology, or conservation biology. Yet the applicability of this technique cannot be fully assessed because no clear picture exists as to the conditions influencing the accuracy of Argos locations. Latitude, type of environment, and transmitter movement are among the main candidate factors affecting accuracy. A posteriori data filtering can remove "bad" locations, but again testing is still needed to refine filters. First, we evaluate experimentally the accuracy of Argos locations in a polar terrestrial environment (Nunavut, Canada), with both static and mobile transmitters transported by humans and coupled to GPS transmitters. We report static errors among the lowest published. However, the 68th error percentiles of mobile transmitters were 1.7 to 3.8 times greater than those of static transmitters. Second, we test how different filtering methods influence the quality of Argos location datasets. Accuracy of location datasets was best improved when filtering in locations of the best classes (LC3 and 2), while the Douglas Argos filter and a homemade speed filter yielded similar performance while retaining more locations. All filters effectively reduced the 68th error percentiles. Finally, we assess how location error impacted, at six spatial scales, two common estimators of home-range size (a proxy of animal space use behavior synthetizing movements), the minimum convex polygon and the fixed kernel estimator. Location error led to a sometimes dramatic overestimation of home-range size, especially at very local scales. We conclude that Argos telemetry is appropriate to study medium-size terrestrial animals in polar environments, but recommend that location errors are always measured and evaluated against research hypotheses, and that data are always filtered before analysis. How movement speed of transmitters affects location error needs

  7. Bacterial β-(1,3)-glucan prevents DSS-induced IBD by restoring the reduced population of regulatory T cells.

    Science.gov (United States)

    Lee, Kwang-Ho; Park, Min; Ji, Kon-Young; Lee, Hwa-Youn; Jang, Ji-Hun; Yoon, Il-Joo; Oh, Seung-Su; Kim, Su-Man; Jeong, Yun-Hwa; Yun, Chul-Ho; Kim, Mi-Kyoung; Lee, In-Young; Choi, Ha-Rim; Ko, Ki-sung; Kang, Hyung-Sik

    2014-10-01

    Bacterial β-(1,3)-glucan has more advantages in terms of cost, yield and efficiency than that derived from mushrooms, plants, yeasts and fungi. We have previously developed a novel and high-yield β-(1,3)-glucan produced by Agrobacterium sp. R259. This study aimed to elucidate the functional mechanism and therapeutic efficacy of bacterial β-(1,3)-glucan in dextran sulfate sodium (DSS)-induced inflammatory bowel disease (IBD).Mice were orally pretreated with bacterial β-(1,3)-glucan at daily doses of 2.5 or 5mg/kg for 2 weeks. After 6 days of DSS treatment, clinical assessment of IBD severity and expression of pro-inflammatory cytokines were evaluated. In vivo cell proliferation was examined by immunohistochemistry using Ki-67 and ER-TR7 antibodies. The frequency of regulatory T cells (Tregs) was analyzed by flow cytometry. Natural killer (NK) activity and IgA level were evaluated using NK cytotoxicity assay and ELISA.The deterioration of body weight gain, colonic architecture, disease score and histological score was recovered in DSS-induced IBD mice when pretreated with bacterial β-(1,3)-glucan. The recruitment of macrophages and the gene expression of proinflammatory cytokines, such as IL-1β, IL-6 and IL-17A/F, were markedly decreased in the colon of β-(1,3)-glucan-pretreated mice. β-(1,3)-Glucan induced the recovery of Tregs in terms of their frequency in DSS-induced IBD mice. Intriguingly, β-(1,3)-glucan reversed the functional defects of NK cells and excessive IgA production in DSS-induced IBD mice.We conclude that bacterial β-(1,3)-glucan prevented the progression of DSS-induced IBD by recovering the reduction of Tregs, functional defect of NK cells and excessive IgA production. PMID:25092569

  8. Diffraction-limited upgrade to ARGOS: the LBT's ground-layer adaptive optics system

    Science.gov (United States)

    Hart, Michael; Busoni, Lorenzo; Durney, Olivier; Esposito, Simone; Gässler, Wolfgang; Gasho, Victor; Rabien, Sebastian; Rademacher, Matt

    2010-07-01

    The Large Binocular Telescope (LBT) is now operating with the first of two permanently installed adaptive secondary mirrors, and the first of two complementary near-IR instruments called LUCIFER is operational as well. The ARGOS laser-guided ground-layer adaptive optics (GLAO) system, described elsewhere at this conference1, will build on this foundation to deliver the highest resolution over the 4 arc min wide-field imaging and multi-object spectroscopic modes of LUCIFER. In this paper, we describe a planned upgrade to ARGOS which will supplement the Rayleigh-based GLAO system with sodium laser guide stars (LGS) to fulfill the telescope's diffraction-limited potential. In its narrow-field mode of 30 arc sec, LUCIFER will deliver imaging at the Nyquist limit of the individual 8.4 m apertures down to J band and long-slit spectroscopy with resolution up to 40,000. In addition, the LBT Interferometer2 (LBTI) will cophase the two apertures, offering imaging at the diffraction limit of the 22.8 m baseline at wavelengths from 1.2 to 20 μm. In the first phase of the upgrade, a 10 W sodium LGS will be added to each half of the LBT, using the same launch telescopes mounted behind the two secondary mirrors as the Rayleigh LGS. The upgrade will rely on other components of the ARGOS infrastructure such as acquisition and guiding, and fast tip-tilt cameras. New wavefront sensors will be added to LUCIFER and LBTI. In the upgrade's second phase, the sodium and Rayleigh LGS will be used together in a hybrid tomographic sensing system. This configuration will offer the advantage that a single tip-tilt star will continue to be sufficient even for MCAO operation3, which is planned with LBT's LINC-NIRVANA instrument4,5.

  9. Argo data assimilation into HYCOM with an EnOI method in the Atlantic Ocean

    Directory of Open Access Journals (Sweden)

    D. Mignac

    2014-07-01

    Full Text Available An ocean data assimilation system to assimilate Argo temperature (T and salinity (S profiles into HYCOM was constructed, implemented and evaluated for the first time in the Atlantic Ocean (78° S to 50° N and 98° W to 20° E. The system is based on the Ensemble Optimal Interpolation (EnOI algorithm proposed by Xie and Zhu (2010, especially made to deal with the hybrid nature of HYCOM vertical coordinate system with multiple steps. The Argo T/S profiles were projected to the model vertical space to create pseudo-observed layer thicknesses (Δ pobs which correspond to the model target densities. The first step was to assimilate Δ pobs considering the sub-state vector composed by the model layer thickness (Δ p and the baroclinic velocity components. After that, T and S were assimilated separately. At last, T was diagnosed below the mixed layer to preserve the density of the model isopycnal layers. Five experiments were performed from 1 January 2010 until 31 December 2012: a control run without assimilation, and four assimilation runs considering different vertical localizations of T, S and Δ p. The assimilation experiments were able to significantly improve the thermohaline structure produced by the control run. They reduced the RMSD of T (S calculated with respect to Argo independent data in 34.11% (43.56% in comparison to the control run. In some regions, such as the west North Atlantic, substantial corrections in the 20 °C isotherm depth and the upper ocean heat content towards climatological states were achieved. The runs with vertical localization of Δ p showed positive impacts in the correction of the thermohaline structure and reduced the RMSD of T (S from 0.993 °C (0.149 psu to 0.905 °C (0.138 psu for the whole domain with respect to the other assimilation runs.

  10. Circumpolar Estimates of Isopycnal Mixing in the ACC from Argo Floats

    Science.gov (United States)

    Roach, C. J.; Balwada, D.; Speer, K. G.

    2015-12-01

    There are few direct observations of cross-stream isopycnal mixing in the interior of the Southern Ocean, yet such measurements are needed to determine the role of eddies transporting properties across the ACC, and key to progress toward testing theories of meridional overturning. In light of this we examine if it is possible to obtain estimates of mixing from Argo float trajectories. We divided the Southern Ocean into overlapping 15ο longitude bins before estimating mixing. Resulting diffusivities ranged from 300 to 3000 m2s-1, with peaks corresponding to the Scotia Sea; Kerguelen and Campbell Plateaus. Comparison of our diffusivities with previous regional studies demonstrated good agreement. Tests of the methodology in the DIMES region found that mixing from Argo floats agreed closely with mixing from RAFOS floats. To further test the method we used the Southern Ocean State Estimate velocity fields to advect particles with Argo and RAFOS float like behaviours. Stirring estimates from the particles agreed well with each other in the Kerguelen Island region, South Pacific and Scotia Sea, despite the differences in the imposed behaviour. Finally, these estimates were compared to mixing length suppression theory presented in Ferrari and Nikurashin 2010. This mixing length suppression theory quantifies horizontal diffusivity similar to Prandtl (1925), but the mixing length is suppressed in the presence of mean flows and eddy phase speeds. Our results suggest that the theory can explain both the structure and magnitude of mixing using mean flow data. An exception is near the Kerguelen and Campbell Plateaus where theory under-estimates mixing relative to our results.

  11. An argo-based model for investigation of the Global Ocean (AMIGO)

    Science.gov (United States)

    Lebedev, K. V.

    2016-03-01

    We analyze the newly developed Argo-Based Model for Investigation of the Global Ocean (AMIGO), which consists of a block for variational interpolation of the profiles of drifting Argo floats to a regular grid and a block for model hydrodynamic adjustment of variationally interpolated fields. Such a method makes it possible to obtain a full set of oceanographic characteristics—temperature, salinity, density, and current velocity—using irregularly located Argo measurements. The resulting simulations are represented as monthly mean, seasonal, and annual means and climatological fields. The AMIGO oceanographic database developed at the Shirshov Institute of Oceanology from model simulations covers the 10-year period from 2005 to 2014. Analysis of transport variations in the propagation of North Atlantic Current jets to the Arctic based on the AMIGO data showed that during this period, anomalous winter transports were observed, which correlate with anomalous winter temperatures in regions of northwestern Europe, northern European Russia, and Iceland, which are subjected to the influence of these currents. Comparative analysis of variations in mass and heat transport by the currents and the North Atlantic Oscillation (NAO) index in the period of 2005-2014 shows a well pronounced correlation between them. The low winter values of the NAO index correspond to the low values of winter transports by the Faroe-Shetland branch of the North Atlantic current, and usually, to the high values of winter transports by the North Icelandic branch of the Irminger Current. High winter value of the NAO index results in a substantial increase in the winter transport by the Faroe-Shetland branch of the North Atlantic Current without notable influence on the transport of the North Icelandic branch of the Irminger Current.

  12. Interpolation of On-Line Data of the Argo Float System for Data Assimilation in the World Ocean Circulation Model

    Science.gov (United States)

    Zakharova, N. B.; Lebedev, S. A.

    2010-12-01

    For many years parameters of the World ocean state were measured by traditional contact methods that lacked in efficiency and the ability to measure temperature much beneath the surface. The ARGO float system involves both contact and distance ocean parameters measure methods. Sea temperature and salinity profiles are measured by contact methods, but data communication is made using satellites. Therefore, the ARGO float system has added efficiency and greater reliability to ocean parameters measurements. Interpolation and extrapolation methods of input information are important among numerical mathematical methods used for solving data assimilation problems. Thus the development of such algorithms and programs based on up-to-date approaches is a timely problem.

  13. Virtual Visit to the ATLAS Control Room by High schools of Argos prefecture

    CERN Multimedia

    2014-01-01

    Continuing the subatomic journey that started last year in Argos, Greece, 45 students from 14 high schools of the prefecture will take part in a dedicated ATLAS Masterclass organized by the University of Athens in the framework of the Go-Lab and Inspiring Science Education European projects. Students will learn how to analyse real events from the ATLAS experiment with the use of HYPATIA online applet. They will also have the opportunity to visit the ATLAS control room to learn what it takes for scientists to keep on pushing the boundaries of our understanding of the origins of the universe.

  14. Spatial correlations applied to gamma/hadron discrimination in the ARGO-YBJ experiment

    International Nuclear Information System (INIS)

    Following recently proposed approaches on gamma/hadron separation, spatial correlations among secondary charged particles in extensive air showers have been studied for the case of the ARGO-YBJ experiment, which represents a particularly suited detector in this respect because of its “continuous-carpet” geometry. Two different types of statistics have been considered, namely the nearest-neighbor spacing distribution (NNSD) and the variance of the number of secondary particles at given distance. The results of this preliminary investigation are reported

  15. Argo: A Time-Elastic Time-Division-Multiplexed NOC using Asynchronous Routers

    DEFF Research Database (Denmark)

    Kasapaki, Evangelia; Sparsø, Jens

    In this paper we explore the use of asynchronous routers in a time-division-multiplexed (TDM) network-on-chip (NOC), Argo, that is being developed for a multi-processor platform for hard real-time systems. TDM inherently requires a common time reference, and existing TDM-based NOC designs are...... either synchronous or mesochronous. We use asynchronous routers to achieve a simpler, smaller, and more robust, self-timed design. Our design exploits the fact that pipelined asynchronous circuits also behave as ripple FIFOs. Thus, it avoids the need for explicit synchronization FIFOs between the routers...

  16. Protective role of 1,25(OH2vitamin D3 in the mucosal injury and epithelial barrier disruption in DSS-induced acute colitis in mice

    Directory of Open Access Journals (Sweden)

    Zhao Hongwei

    2012-05-01

    Full Text Available Abstract Background Intestinal hyper-permeability plays a critical role in the etiopathogenesis of inflammatory bowel disease (IBD by affecting the penetration of pathogens, toxic compounds and macromolecules. 1,25-dihydroxyvitamin D3 [1,25(OH2D3], the active form of vitamin D, has been shown to be an important regulator of IBD and recent epidemiology suggests that patients with IBD have an impaired vitamin D status. The purpose of this study is to investigate the possible protective effects of 1,25(OH2D3 on mucosal injury and epithelial barrier disruption on dextran sulfate sodium (DSS-induced acute colitis model. Methods We used DSS-induced acute colitis model to investigate the protective effects of 1,25(OH2D3 on mucosal injury and epithelial barrier integrity. Severity of colitis was evaluated by disease activity index (DAI, body weight (BW change, colon length, histology, myeloperoxidase (MPO activity, and proinflammatory cytokine production including tumor necrosis factor-α (TNF-α and interferon-γ (IFN-γ. In vitro the protective role of 1,25(OH2D3 was assessed by incubating Caco-2 cells with or without DSS and measuring transepithelial electrical resistance (TEER and fluorescein isothiocyanate dextran (FITC-D. The intestinal permeability was analyzed by FITC-D, bacterial translocation and measurement of lipopolysaccharide (LPS. Ultrastructural features of the colon tissue and Caco-2 cell monolayer were observed by electron microscopy. Expressions of tight junction (TJ proteins in the colon mucosa and Caco-2 cells were detected by immunohistochemistry, immunofluorescence, Western blot and real-time fluorescent quantitative PCR, respectively. Results DSS-induced acute colitis model was characterized by a reduced BW, AUC of BW, serum calcium, higher DAI, AUC of DAI, shortened colon length, elevated MPO activity, worsened histologic inflammation, increased mononuclear cell numbers in mesenteric lymph nodes (MLNs and colonic lamina propria

  17. RESULTS OF ANALYSES OF MACROBATCH 3 DECONTAMINATED SALT SOLUTION (DSS) COALESCER AND PRE-FILTERS

    Energy Technology Data Exchange (ETDEWEB)

    Peters, T.; Fondeur, F.; Fink, S.

    2012-06-13

    SRNL analyzed the pre-filter and Decontamination Salt Solution (DSS) coalescer from MCU by several analytical methods. The results of these analyses indicate that overall there is light to moderate solids fouling of both the coalescer and pre-filter elements. The majority of the solids contain aluminum, sodium, silicon, and titanium, in oxide and/or hydroxide forms that we have noted before. The titanium is presumably precipitated from leached, dissolved monosodium titanate (MST) or fines from MST at ARP, and the quantity we find is significantly greater than in the past. A parallel report discusses potential causes for the increased leaching rate of MST, showing that increases in free hydroxide concentration of the feed solutions and of chemical cleaning solutions lead to faster leaching of titanium.

  18. Validation of dispersion model of RTARC-DSS based on ''KIT'' field experiments

    International Nuclear Information System (INIS)

    The aim of this study is to present the performance of the Gaussian dispersion model RTARC-DSS (Real Time Accident Release Consequences - Decision Support System) at the 'Kit' field experiments. The Model Validation Kit is a collection of three experimental data sets from Kincaid, Copenhagen, Lillestrom and supplementary Indianopolis experimental campaigns accompanied by software for model evaluation. The validation of the model has been performed on the basis of the maximum arc-wise concentrations using the Bootstrap resampling procedure the variation of the model residuals. Validation was performed for the short-range distances (about 1 - 10 km, maximum for Kincaid data set - 50 km from source). Model evaluation procedure and amount of relative over- or under-prediction are discussed and compared with the model. (author)

  19. DSS 14 antenna calibrations for GSSR/VLA Saturn radar experiments

    Science.gov (United States)

    Guiar, C. N.; Riggs, R. L.; Stevens, R.; Wert, M.

    1988-01-01

    The DSS 14 pointing and gain were calibrated to support X-band bistatic radar observations of Saturn's rings. The observations used the Goldstone Solar System Radar and the National Radio Astronomy Observatory's Very Large Array (VLA) in Socorro, New Mexico. The pointing calibrations were based on conscan offset data collected during Voyager 1 and 2 support passes. The conscan data show angle-of-arrival sensing with no bias and 0.3 mdeg 1-sigma error. Using the calibrations, demonstrated blind pointing performance on Saturn was less than 3 mdeg 1-sigma error. Meteorological observations at the site were used to reduce elevation errors caused by atmospheric refraction. The techniques used corrected about one-third of the error-poorer than expected performance.

  20. Evaluation of changes in serum chemistry in association with feed withdrawal or high dose oral gavage with Dextran Sodium Sulfate (DSS) induced gut leakage in broiler chickens

    Science.gov (United States)

    Dextran sodium sulfate (DSS) has been shown to be effective at inducing enteric inflammation in broiler chickens, resulting in increased leakage of orally administered fluorescein isothiocyanate dextran to circulation. In a previous study, two doses of DSS (0.45g/dose) administered as oral gavage re...

  1. Mangiferin attenuates DSS colitis in mice: Molecular docking and in vivo approach.

    Science.gov (United States)

    Somani, Sahil; Zambad, Shitalkumar; Modi, Ketan

    2016-06-25

    Inflammation, oxidative stress and altered mucosal barrier permeability are potential etiopathological or triggering factors for inflammatory bowel disease (IBD). In this study, the therapeutic potential of Mangiferin was investigated in vivo in mouse model of colitis and also attempts were made to understand mechanistic insights of Mangiferin in IBD. In present study, colitis was induced by administration of 5% DSS for 11 days, followed by 3 days of DSS free period. On day 14, animals were sacrificed and colon tissues were taken for biochemical and histological analysis. Therapeutic treatment with Mangiferin after colitis induction (i.e. day 5) ameliorated symptoms of colitis (presence of blood in stools, body weight loss and diarrhea) as evidenced by reduced DAI score, attenuated the levels of catalase (CAT), reduced glutathione (GSH), superoxide dismutase (SOD), malondialdehyde (MDA), myeloperoxidase (MPO). It also decreased the colonic pro-inflammatory mediators tumor necrosis factor (TNF-α), interleukin 1β (IL-1β) levels, matrix metalloproteinase-9 (MMP-9) activity and histopathological score. Molecular docking of Mangiferin against TNF-α and MMP-9 was evaluated using GLIDE software. Mangiferin demonstrated the glide score of -8.04 kcal/mol for TNF-α and -9.97 kcal/mol for MMP-9, which indicated its binding potential with TNF-α and MMP-9. In conclusion, Mangiferin reduces colonic damage in a murine model of colitis, alleviates the oxidative and inflammatory events partly through directly influencing the activity of TNF-α and MMP-9 and therefore might have therapeutic usefulness in the management of inflammatory bowel disease. PMID:27125760

  2. Excretory/secretory products from Trichinella spiralis adult worms ameliorate DSS-induced colitis in mice.

    Directory of Open Access Journals (Sweden)

    Xiaodi Yang

    Full Text Available BACKGROUND: Many evidences show the inverse correlation between helminth infection and allergic or autoimmune diseases. Identification and characterization of the active helminth-derived products responsible for the beneficial effects on allergic or inflammatory diseases will provide another feasible approach to treat these diseases. METHODS AND FINDINGS: Colitis was induced in C57BL/6 mice by giving 3% DSS orally for 7 days. During this period, the mice were treated daily with the excretory/secretory products from T. spiralis adult worms (AES intraperitoneally. The severity of colitis was monitored by measuring body weight, stool consistency or bleeding, colon length and inflammation. To determine the T. spiralis AES product-induced immunological response, Th1, Th2, Th17 and regulatory cytokine profiles were measured in lymphocytes isolated from colon, mesenteric lymph nodes (MLN, and the spleen of treated mice. The CD4+ CD25+ FOXP3+ regulatory T cells (Tregs were also measured in the spleens and MLN of treated mice. Mice treated with AES significantly ameliorated the severity of the DSS-induced colitis indicated by the reduced disease manifestations, improved macroscopic and microscopic inflammation correlated with the up-regulation of Treg response (increased regulatory cytokines IL-10, TGF-beta and regulatory T cells and down-regulation of pro-inflammatory cytokines (IFN-gamma, IL-6 and IL-17 in the spleens, MLN and colon of treated mice. CONCLUSIONS: Our results provide direct evidences that T. spiralis AES have a therapeutic potential for alleviating inflammatory colitis in mice. This effect is possibly mediated by the immunomodulation of regulatory T cells to produce regulatory and anti-inflammatory cytokines and inhibit pro-inflammatory cytokines.

  3. The analog Resistive Plate Chamber detector of the ARGO-YBJ experiment

    CERN Document Server

    Bartoli, B; Bi, X J; Cao, Z; Catalanotti, S; Chen, S Z; Chen, T L; Cui, S W; Dai, B Z; D'Amone, A; Danzengluobu,; De Mitri, I; Piazzoli, B D'Ettorre; Di Girolamo, T; Di Sciascio, G; Feng, C F; Feng, Zhaoyang; Feng, Zhenyong; Gou, Q B; Guo, Y Q; He, H H; Hu, Haibing; Hu, Hongbo; Iacovacci, M; Iuppa, R; Jia, H Y; Labaciren,; Li, H J; Liu, C; Liu, J; Liu, M Y; Lu, H; Ma, L L; Ma, X H; Mancarella, G; Mari1, S M; Marsella, G; Mastroianni, S; Montini, P; Ning, C C; Perrone, L; Pistilli, P; Salvini1, P; Santonico, R; Shen, P R; Sheng, X D; Shi, F; Surdo, A; Tan, Y H; Vallania, P; Vernetto, S; Vigorito, C; Wang, H; Wu, C Y; Wu, H R; Xue, L; Yang, Q Y; Yang, X C; Yao, Z G; Yuan, A F; Zha, M; Zhang, H M; Zhang, L; Zhang, X Y; Zhang, Y; Zhao, J; Zhaxiciren,; Zhaxisangzhu,; Zhou, X X; Zhu, F R; Zhu, Q Q

    2015-01-01

    The ARGO-YBJ experiment has been in stable data taking from November 2007 till February 2013 at the YangBaJing Cosmic Ray Observatory (4300 m a.s.l.). The detector consists of a single layer of Resistive Plate Chambers (RPCs) ( about 6700 m^2}) operated in streamer mode. The signal pick-up is obtained by means of strips facing one side of the gas volume. The digital readout of the signals, while allows a high space-time resolution in the shower front reconstruction, limits the measurable energy to a few hundred TeV. In order to fully investigate the 1-10 PeV region, an analog readout has been implemented by instrumenting each RPC with two large size electrodes facing the other side of the gas volume. Since December 2009 the RPC charge readout has been in operation on the entire central carpet (about 5800 m^2). In this configuration the detector is able to measure the particle density at the core position where it ranges from tens to many thousands of particles per m^2. Thus ARGO-YBJ provides a highly detailed...

  4. A calibration method of Argo floats based on multiple regression analysis

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Argo floats are free-moving floats that report vertical profiles of salinity, temperature and pressure at regular time intervals. These floats give good measurements of temperature and pressure, but salinity measurements may show significant sensor drifting with time. It is found that sensor drifting with time is not purely linear as presupposed by Wong (2003). A new method is developed to calibrate conductivity data measured by Argo floats. In this method, Wong's objective analysis method was adopted to estimate the background climatological salinity field on potential temperature surfaces from nearby historical data in WOD01. Furthermore, temperature and time factors are taken into account, and stepwise regression was used for a time-varying or temperature-varying slope in potential conductivity space to correct the drifting in these profiling float salinity data. The result shows salinity errors using this method are smaller than that of Wong's method, the quantitative and qualitative analysis of the conductivity sensor can be carried out with our method.

  5. The ARGOS wavefront sensor pnCCD camera for an ELT: characteristics, limitations and applications

    Science.gov (United States)

    de Xivry, G. Orban; Ihle, S.; Ziegleder, J.; Barl, L.; Hartmann, R.; Rabien, S.; Soltau, H.; Strueder, L.

    2011-09-01

    From low-order to high-order AO, future wave front sensors on ELTs require large, fast, and low-noise detectors with high quantum efficiency and low dark current. While a detector for a high-order Shack-Hartmann WFS does not exist yet, the current CCD technology pushed to its limits already provides several solutions for the ELT AO detector requirements. One of these devices is the new WFS pnCCD camera of ARGOS, the Ground-Layer Adaptive Optics system (GLAO) for LUCIFER at LBT. Indeed, with its 264x264 pixels, 48 mu m pixel size and 1kHz frame rate, this camera provides a technological solution to different needs of the AO systems for ELTs, such as low-order but as well possibly higher order correction using pyramid wavefront sensing. In this contribution, we present the newly developped WFS pnCCD camera of ARGOS and how it fulfills future detector needs of AO on ELTs.

  6. Pre-shipment test of the ARGOS laser guide star wavefront sensor

    Science.gov (United States)

    Bonaglia, Marco; Busoni, Lorenzo; Mazzoni, Tommaso; Puglisi, Alfio; Antichi, Jacopo; Esposito, Simone; Orban de Xivry, Gilles; Rabien, Sebastian

    2014-08-01

    We present the results of the laboratory characterization of the ARGOS LGS wavefront sensor (LGSW) and dichroic units. ARGOS is the laser guide star adaptive optics system of the Large Binocular Telescope (LBT). It implements a Ground Layer Adaptive Optics (GLAO) correction for LUCI, an infrared imager and multi-object spectrograph (MOS), using 3 pulsed Rayleigh beacons focused at 12km altitude. The LGSW is a Shack-Hartman sensor having 15 × 15 subaspertures over the telescope pupil. Each LGS is independently stabilized for on-sky jitter and gated to reduce spot elongation. The 3 LGS pupils are stabilized to compensate mechanical flexure and are arranged on a single detector. Two units of LGSW have been produced and tested at Arcetri Observatory. We report on the results obtained in the pre-shipment laboratory test: internal active flexure compensation loop performance, optomechanical stability under different gravity conditions, thermal cycling, Pockels cells performance. We also update on the upcoming installation and commissioning campaign at LBT.

  7. Integration and laboratory characterization of the ARGOS laser guide star wavefront sensors

    Science.gov (United States)

    Busoni, Lorenzo; Bonaglia, Marco; Carbonaro, Luca; Mazzoni, Tommaso; Antichi, Jacopo; Esposito, Simone; Orban De Xivry, Gilles; Rabien, Sebastian

    2013-12-01

    The integration status of the ARGOS wavefront sensors is presented. ARGOS is the laser guide star AO program for the LBT. It will implement a Ground Layer AO correction for the instruments LUCI, an infrared imaging and spectrograph camera, using 3 pulsed low-altitudes Rayleigh beacons for each LBT's eye. It profits of the LBT's adaptive secondary mirrors and of FLAO's pyramid unit for NGS sensing. Each LGS is independently stabilized for on-sky jitter and range-gated using custom Pockels cells and then sensed by a 15x15 SH sensor. The 3 pupil images are reimaged on a single lenslet array and a single detector. In the WFS are also installed 3 patrol cameras for the acquisition of the laser beacons, a system for the stabilization of the pupil images on the lenslet array and an internal source for calibration purposes. The two units are now completing the integration phase in Arcetri premises. We describe the characterization of the units and the closed-loop test realized using a deformable MEMS mirror.

  8. Ocean temperature and salinity components of the Madden-Julian oscillation observed by Argo floats

    Energy Technology Data Exchange (ETDEWEB)

    Matthews, Adrian J. [University of East Anglia, School of Environmental Sciences, Norwich (United Kingdom); University of East Anglia, School of Mathematics, Norwich (United Kingdom); Singhruck, Patama [University of East Anglia, School of Environmental Sciences, Norwich (United Kingdom); Chulalongkorn University, Department of Marine Science, Bangkok (Thailand); Heywood, Karen J. [University of East Anglia, School of Environmental Sciences, Norwich (United Kingdom)

    2010-12-15

    New diagnostics of the Madden-Julian oscillation (MJO) cycle in ocean temperature and, for the first time, salinity are presented. The MJO composites are based on 4 years of gridded Argo float data from 2003 to 2006, and extend from the surface to 1,400 m depth in the tropical Indian and Pacific Oceans. The MJO surface salinity anomalies are consistent with precipitation minus evaporation fluxes in the Indian Ocean, and with anomalous zonal advection in the Pacific. The Argo sea surface temperature and thermocline depth anomalies are consistent with previous studies using other data sets. The near-surface density changes due to salinity are comparable to, and partially offset, those due to temperature, emphasising the importance of including salinity as well as temperature changes in mixed-layer modelling of tropical intraseasonal processes. The MJO-forced equatorial Kelvin wave that propagates along the thermocline in the Pacific extends down into the deep ocean, to at least 1,400 m. Coherent, statistically significant, MJO temperature and salinity anomalies are also present in the deep Indian Ocean. (orig.)

  9. From satellite altimetry to operational oceanography and Argo: three revolutions in oceanography (Fridtjof Nansen Medal Lecture)

    Science.gov (United States)

    Le Traon, P. Y.

    2012-04-01

    The launch of the US/French mission Topex/Poseidon (T/P) (CNES/NASA) in August 1992 was the start of a revolution in oceanography. For the first time, a very precise altimeter system optimized for large scale sea level and ocean circulation observations was flying. Topex/Poseidon revolutionized our vision and understanding of the ocean. It provided new views of the large scale seasonal and interannual sea level and ocean circulation variations. T/P alone could not observe the mesoscale circulation. In the 1990s, the ESA satellites ERS-1/2 were flying simultaneously with T/P. The ERS-1/2 orbit was well adapted for mesoscale circulation sampling but the orbit determination and altimeter performance were much less precise than for T/P. We demonstrated that we could use T/P as a reference mission for ERS-1/2 and bring the ERS-1/2 data to an accuracy level comparable to T/P. This was an essential first step for the merging of T/P and ERS-1/2. The second step required the development of a global optimal interpolation method. Near real time high resolution global sea level anomaly maps were then derived. These maps have been operationally produced as part of the SSALTO/DUACS system for the last 15 years. They are now widely used by the oceanographic community and have contributed to a much better understanding and recognition of the role and importance of mesoscale dynamics. The unique capability of satellite altimetry to observe the global ocean in near real time at high resolution was essential to the development of global ocean forecasting, a second revolution in oceanography. The Global Ocean Data Assimilation Experiment (GODAE) (1998-2008) was phased with the T/P and ERS-1/2 successors (Jason-1 and ENVISAT) and was instrumental in the development of global operational oceanography capabilities. Europe played a leading role in GODAE. In 1998, the global in-situ observing system was inadequate for the global scope of GODAE. This led to the development of Argo, an

  10. Revision of deposition and weathering parameters for the ingestion dose module (ECOSYS) of the ARGOS and RODOS decision support systems

    DEFF Research Database (Denmark)

    Andersson, Kasper Grann; Nielsen, Sven Poul; Thørring, Håvard;

    2011-01-01

    The ECOSYS model is the ingestion dose model integrated in the ARGOS and RODOS decision support systems for nuclear emergency management. The parameters used in this model have however not been updated in recent years, where the level of knowledge on various environmental processes has increased ...

  11. From satellite altimetry to Argo and operational oceanography: three revolutions in oceanography

    Directory of Open Access Journals (Sweden)

    P. Y. Le Traon

    2013-10-01

    Full Text Available The launch of the French/US mission Topex/Poseidon (T/P (CNES/NASA in August 1992 was the start of a revolution in oceanography. For the first time, a very precise altimeter system optimized for large-scale sea level and ocean circulation observations was flying. T/P alone could not observe the mesoscale circulation. In the 1990s, the ESA satellites ERS-1/2 were flying simultaneously with T/P. Together with my CLS colleagues, we demonstrated that we could use T/P as a reference mission for ERS-1/2 and bring the ERS-1/2 data to an accuracy level comparable to T/P. Near-real-time high-resolution global sea level anomaly maps were then derived. These maps have been operationally produced as part of the SSALTO/DUACS system for the last 15 yr. They are now widely used by the oceanographic community and have contributed to a much better understanding and recognition of the role and importance of mesoscale dynamics. Altimetry needs to be complemented with global in situ observations. At the end of the 90s, a major international initiative was launched to develop Argo, the global array of profiling floats. This has been an outstanding success. Argo floats now provide the most important in situ observations to monitor and understand the role of the ocean on the earth climate and for operational oceanography. This is a second revolution in oceanography. The unique capability of satellite altimetry to observe the global ocean in near-real-time at high resolution and the development of Argo were essential for the development of global operational oceanography, the third revolution in oceanography. The Global Ocean Data Assimilation Experiment (GODAE was instrumental in the development of the required capabilities. This paper provides an historical perspective on the development of these three revolutions in oceanography which are very much interlinked. This is not an exhaustive review and I will mainly focus on the contributions we made together with many

  12. CRED SVP Drifting Buoy Argos_ID 24955 Data at Bank 8, in the NW Hawaiian Islands, 200110-200504 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 24955 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  13. CRED SVP Drifting Buoy Argos_ID 28078 Data, Stingray Shoals in the Marianas Archipelago, 200308-200412 (NODC Accession 0067473)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 28078 was deployed in the region of Marianas Archipelago to assess ocean currents and sea surface temperature. SVP drifter data files...

  14. CRED SVP Drifting Buoy Argos_ID 29102 Data, Lisianski Island in the Northwestern Hawaiian Islands, 200307-200310 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 29102 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  15. CRED SVP Drifting Buoy Argos_ID 30311 Data between Nihoa and Niihau in the NW Hawaiian Islands, 200210-200402 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 30311 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  16. CRED SVP Drifting Buoy Argos_ID 24754 Data, between Ofu and Tutuila, in the American Samoa, 200307-200308 (NODC Accession 0067474)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 24754 was deployed in the region of American Samoa to assess ocean currents and sea surface temperature. SVP drifter data files contain...

  17. CRED SVP Drifting Buoy Argos_ID 29101 Data, Kure Atoll in the Northwestern Hawaiian Islands, 200308-200509 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 29101 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  18. CRED SVP Drifting Buoy Argos_ID 44769 Data, Enroute to Manua from Tutuila, in the American Samoa, 200402-200406 (NODC Accession 0067474)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 44769 was deployed in the region of American Samoa to assess ocean currents and sea surface temperature. SVP drifter data files contain...

  19. CRED SVP Drifting Buoy Argos_ID 30111 Data, French Frigate Shoals in the Northwestern Hawaiian Islands, 200210-200309 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 30111 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  20. CRED SVP Drifting Buoy Argos_ID 29098 Data, Necker Island in the Northwestern Hawaiian Islands, 200307-200410 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 29098 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  1. CRED SVP Drifting Buoy Argos_ID 30288 Data near Necker in the NW Hawaiian Islands, 200209-200404 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 30288 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  2. CRED SVP Drifting Buoy Argos_ID 24946 Data, north of Niihau, in the NW Hawaiian Islands, 200110-200209 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 24946 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  3. CRED SVP Drifting Buoy Argos_ID 29106 Data, Laysan Island in the Northwestern Hawaiian Islands, 200307-200411 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 29106 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  4. CRED SVP Drifting Buoy Argos_ID 29097 Data near Nihoa Island, in the Northwestern Hawaiian Islands, 200307-200412 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED SVP drifter Argos_ID 29097 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. SVP drifter data files...

  5. Decision Support system- DSS- for irrigation management in greenhouses: a case study in Campania Region

    Science.gov (United States)

    Monaco, Eugenia; De Mascellis, Roberto; Riccardi, Maria; Basile, Angelo; D'Urso, Guido; Magliulo, Vincenzo; Tedeschi, Anna

    2016-04-01

    In Mediterranean Countries the proper management of water resources is important for the preservation of actual production systems. The possibility to manage water resources is possible especially in the greenhouses systems. The challenge to manage the soil in greenhouse farm can be a strategy to maintain both current production systems both soil conservation. In Campania region protected crops (greenhouses and tunnels) have a considerable economic importance both for their extension in terms of surface harvested and also for their production in terms of yields. Agricultural production in greenhouse is closely related to the micro-climatic condition but also to the physical and agronomic characteristics of the soil-crop system. The protected crops have an high level of technology compare to the other production systems, but the irrigation management is still carried out according to empirical criteria. The rational management of the production process requires an appropriate control of climatic parameters (temperature, humidity, wind) and agronomical inputs (irrigation, fertilization,). All these factors need to be monitored as well is possible, in order to identify the optimal irrigation schedule. The aim of this work is to implement a Decision Support system -DSS- for irrigation management in greenhouses focused on a smart irrigation control based on observation of the agro-climatic parameters monitored with an advanced wireless sensors network. The study is conducted in a greenhouse farm of 6 ha located in the district of Salerno were seven plots were cropped with rocket. Preliminary a study of soils proprieties was conducted in order to identify spatial variability of the soil in the farm. So undisturbed soil samples were collected to define chemical and physical proprieties; moreover soil hydraulic properties were determined for two soils profiles deemed representation of the farm. Then the wireless sensors, installed at different depth in the soils

  6. A neural network-based method for merging ocean color and Argo data to extend surface bio-optical properties to depth: Retrieval of the particulate backscattering coefficient

    Science.gov (United States)

    Sauzède, R.; Claustre, H.; Uitz, J.; Jamet, C.; Dall'Olmo, G.; D'Ortenzio, F.; Gentili, B.; Poteau, A.; Schmechtig, C.

    2016-04-01

    The present study proposes a novel method that merges satellite ocean color bio-optical products with Argo temperature-salinity profiles to infer the vertical distribution of the particulate backscattering coefficient (bbp). This neural network-based method (SOCA-BBP for Satellite Ocean-Color merged with Argo data to infer the vertical distribution of the Particulate Backscattering coefficient) uses three main input components: (1) satellite-based surface estimates of bbp and chlorophyll a concentration matched up in space and time with (2) depth-resolved physical properties derived from temperature-salinity profiles measured by Argo profiling floats and (3) the day of the year of the considered satellite-Argo matchup. The neural network is trained and validated using a database including 4725 simultaneous profiles of temperature-salinity and bio-optical properties collected by Bio-Argo floats, with concomitant satellite-derived products. The Bio-Argo profiles are representative of the global open-ocean in terms of oceanographic conditions, making the proposed method applicable to most open-ocean environments. SOCA-BBP is validated using 20% of the entire database (global error of 21%). We present additional validation results based on two other independent data sets acquired (1) by four Bio-Argo floats deployed in major oceanic basins, not represented in the database used to train the method; and (2) during an AMT (Atlantic Meridional Transect) field cruise in 2009. These validation tests based on two fully independent data sets indicate the robustness of the predicted vertical distribution of bbp. To illustrate the potential of the method, we merged monthly climatological Argo profiles with ocean color products to produce a depth-resolved climatology of bbp for the global ocean.

  7. La política nuclear espanyola: el caos del reactor nuclear Argos

    OpenAIRE

    Barca Salom, Francesc Xavier

    2000-01-01

    L’11 de juny de 1962 s’inaugurava a l’Escola Tècnica Superior d’Enginyeria Industrial de Barcelona un reactor nuclear experimental, que era batejat amb el nom mític d’Argos. Tota la premsa barcelonina se’n feu ressò i el presentava com el primer reactor construït íntegrament a Espanya per la Junta d’Energia Nuclear. La idea de dotar l’Escola d’un reactor nuclear havia nascut, però, set anys abans, precisament en el mateix moment de la creació de la Càtedra Ferran Tallada d’enginyeria...

  8. Impacts of XBT, TAO, Altimetry and ARGO Observations on the Tropical Pacific Ocean Data Assimilation

    Institute of Scientific and Technical Information of China (English)

    YAN Changxiang; ZHU Jiang; ZHOU Guangqing

    2007-01-01

    This study aims at assessing the relative impacts of four major components of the tropical Pacific Ocean observing system on assimilation of temperature and salinity fields. Observations were collected over a period between January 2001 through June 2003 including temperature data from the expendable bathythermographs (XBT), thermistor data from the Tropical Ocean Global Atmosphere Tropical Atmosphere-Ocean (TOGA-TAO) mooring array, sea level anomalies from the Topex/Poseidon and Jason-1 altimetry (T/P-J),and temperature and salinity profiles from the Array for Real-time Geostrophic Oceanography (ARGO) floats.An efficient three-dimensional variational analysis-based method was introduced to assimilate the above data into the tropical-Pacific circulation model. To evaluate the impact of the individual component of the observing system, four observation system experiments were carried out. The experiment that assimilated all four components of the observing system was taken as the reference. The other three experiments were implemented by withholding one of the four components. Results show that the spatial distribution of the data influences its relative contribution. XBT observations produce the most distinguished effects on temperature analyses in the off-equatorial region due to the large amount of measurements and high quality.Similarly, the impact of TAO is dominant in the equatorial region due to the focus of the spatial distribution.The Topex/Poseidon-Jason-1 can be highly complementary where the XBT and TAO observations are sparse.The contribution of XBT or TAO on the assimilated salinity is made by the model dynamics because no salinity observations from them are assimilated. Therefore, T/P-J, as a main source for providing salinity data, has been shown to have greater impacts than either XBT or TAO on the salinity analysis. Although ARGO includes the subsurface observations, the relatively smaller number of observation makes it have the smallest

  9. Salinity variability in the North Atlantic through synergetic analysis of Argo floats and satellite altimetry data

    Science.gov (United States)

    Stendardo, Ilaria; Rhein, Monika; Klein, Birgit; Roessler, Achim

    2015-04-01

    Salinity distribution in the North Atlantic is affected by changes in the circulation and freshwater fluxes. Changes in salinity are introduced into the ocean's interior by vertical processes like subduction or convection, and transported along circulation pathways. At a given location and depth, salinity could vary by water mass changes due to changes in the freshwater flux, or by vertical migration of density surfaces caused either by wind-driven changes of ocean ventilation or by thermodynamic processes, like poleward migration of isopycnals as a result of surface warming. Changes in the wind driven circulation with a consequence shift of the subpolar front, that separates the fresher subpolar from the saline subtropical gyre, also have a marked influence on upper ocean salinity in the subpolar North Atlantic. Due to the lack of temporal and spatial resolution of salinity observations, salinity anomalies in the last century could only be studied by 5-year means. Thanks to the Argo program, the temporal and spatial resolution of salinity and temperature profiles since early 2000 have significantly improved, allowing to calculate even monthly means. To further improve temporal and spatial resolution of salinity, Argo profiles are combined with altimetry data and a "Transfer function", the Gravest Empirical Mode (GEM), is calculated. The GEM technique exploits the relationship between T/S profiles and dynamic height in order to parameterize salinity data as a function of dynamic height from the satellite altimetry. This technique gives the opportunity to extend the investigation of the salinity variability, with extremely high temporal (daily) and spatial (1/4°) resolution, back to 1993, the beginning of the altimetry data. This method was tested on several regions of the North Atlantic and it works particularly well for some of them, for example in the regions where the North Atlantic Current plays an important role. Within these regions salinity variability in

  10. Estimation of eddy heat transport in the global ocean from Argo data

    Institute of Scientific and Technical Information of China (English)

    ZHANG Zhiwei; ZHONG Yisen; TIAN Jiwei; YANG Qingxuan; ZHAO Wei

    2014-01-01

    The Argo data are used to calculate eddy (turbulence) heat transport (EHT) in the global ocean and analyze its horizontal distribution and vertical structure. We calculate the EHT by averaging all the v′, T′ profiles within each 2◦× 2◦ bin. The velocity and temperature anomalies are obtained by removing their clima-tological values from the Argo“instantaneous”values respectively. Through the Student’s t-test and an error evaluation, we obtained a total of 87% Argo bins with significant depth-integrated EHTs (D-EHTs). The results reveal a positive-and-negative alternating D-EHT pattern along the western boundary currents (WBC) and Antarctic Circumpolar Current (ACC). The zonally-integrated D-EHT (ZI-EHT) of the global o-cean reaches 0.12 PW in the northern WBC band and-0.38 PW in the ACC band respectively. The strong ZI-EHT across the ACC in the global ocean is mainly caused by the southern Indian Ocean. The ZI-EHT in the above two bands accounts for a large portion of the total oceanic heat transport, which may play an important role in regulating the climate. The analysis of vertical structures of the EHT along the 35◦N and 45◦S section reveals that the oscillating EHT pattern can reach deep in the northern WBC regions and the Agulhas Return Current (ARC) region. It also shows that the strong EHT could reach 600 m in the WBC re-gions and 1 000 m in the ARC region, with the maximum mainly located between 100 and 400 m depth. The results would provide useful information for improving the parameterization scheme in models.

  11. Splenic dendritic cell involvement in FXR-mediated amelioration of DSS colitis.

    Science.gov (United States)

    Massafra, Vittoria; Ijssennagger, Noortje; Plantinga, Maud; Milona, Alexandra; Ramos Pittol, José M; Boes, Marianne; van Mil, Saskia W C

    2016-02-01

    Inflammatory Bowel Disease (IBD) is a multifactorial disorder involving dysregulation of the immune response and bacterial translocation through the intestinal mucosal barrier. Previously, we have shown that activation of the bile acid sensor Farnesoid X Receptor (FXR), which belongs to the family of nuclear receptors, improves experimental intestinal inflammation, decreasing expression of pro-inflammatory cytokines and protecting the intestinal barrier. Here, we aimed to investigate the immunological mechanisms that ameliorate colitis when FXR is activated. We analyzed by FACS immune cell populations in mesenteric lymph nodes (MLN) and in the spleen to understand whether FXR activation alters the systemic immune response. We show that FXR activation by obeticholic acid (OCA) has systemic anti-inflammatory effects that include increased levels of plasma IL-10, inhibition of both DSS-colitis associated decrease in splenic dendritic cells (DCs) and increase in Tregs. Impact of OCA on DC relative abundance was seen in spleen but not MLN, possibly related to the increased FXR expression in splenic DCs compared to MLN DCs. Moreover, FXR activation modulates the chemotactic environment in the colonic site of inflammation, as Madcam1 expression is decreased, while Ccl25 is upregulated. Together, our data suggest that OCA treatment elicits an anti-inflammatory immune status including retention of DCs in the spleen, which is associated with decreased colonic inflammation. Pharmacological FXR activation is therefore an attractive new drug target for treatment of IBD. PMID:26554605

  12. Decision Support System (DSS) for MSMA Integrated Stormwater Management Ecohydrology for Sustainable Green Infrastructure

    Science.gov (United States)

    Sidek, L. M.; Mohiyaden, H. A.; Haris, H.; Basri, H.; Muda, Z. C.; Roseli, Z. A.; Norlida, M. D.

    2016-03-01

    Rapid urbanization has known to have several adverse impacts towards hydrological cycle due to increasing impervious surface and degradation of water quality in stormwater runoff. In the past, urban waterways have been confined to narrow river corridors with the channels canalised and concrete and other synthetic materials forming the bed and banks of the river. Apart from that, stormwater pollutants such as litter, debris and sediments in drainage system are common problems that can lead to flooding and the degradation of water quality. To solve this problem, implementing stormwater Best Management Practices (BMPs) proves very promising due to its near natural characteristics and multiple effects on the drainage of stormwater runoff in urban areas. This judgment of using BMPs depends on not only relevant theoretical considerations, but also a large amount of practical experience and the availability of relevant data, as well. To fulfil this task, the so-called Decision Support System (DSS) in MSMA Design Aid and Database system are able to assist engineers and developers in management and improvement of water quantity and quality entering urban rivers from urban regions. This system is also helpful when an expert level judgment procure some repetitive and large amount of cases, like in the planning of stormwater BMPs systems for an entire city catchment. One of the advantages of an expert system is that it provides automation of expert-level judgement using availability of checking tools system.

  13. New methods to measure and model logistics and goods effects by the use of the CLG-DSS Model

    DEFF Research Database (Denmark)

    Salling, Kim Bang; Jensen, Anders Vestergaard

    2004-01-01

    This paper concerns the assessment and modelling of so-called logistics and goods effects (LG-effects) as part of a wider economic analysis by use of the developed CLG-DSS model. The results presented are based an on-going study, Task 9 about evaluation modelling and decision support systems (DSS......) in the Centre for Logistics and Goods Transport (CLG) 2001-2005 funded by the Danish Council for Technical-Scientific Research (STVF). Within the area of research on logistics the interaction between logistics and transportation is of great relevance. Task 9 and other recent studies have found that...... several companies are taking account of logistics and transport by setting up, among other things, specific departments to improve their handling. Some aspects in the transport sector concerning goods movement and consequences have not so far got the attention they deserve. In CLG Task 9 four LG...

  14. Pilot Operation of Ex-core Neutron Sensors of Divers Shutdown System (DSS) Unit 2 Ignalina NPP

    International Nuclear Information System (INIS)

    The Ignalina Safety Assessment, which was completed in December 1996, recommended the installation of a diverse shutdown system on the 2nd unit at Ignalina. During the PPR-2004 in the DSS project are created two independent shutdown systems by separating the absorber rods into two independent groups as follows: 1. One system (designated AZ) consists of the existing 24 BAZ rods and 49 AZ/BSM rods that together are used for reliable reactor shutdown (including Control and Protection System (CPS) circuit voiding accident). This system performs the emergency protection function. 2. The other system (designated BSM) comprises the remaining absorber rods and the 49 AZ/BSM rods. Thus 49 AZ/BSM rods are actuated from AZ initiating equipment as well as from BSM initiating equipment. The BSM system performs the normal reactor shutdown function and is able to ensure long-term maintenance of the reactor in the sub-critical state. Along with implementation of DSS was modernized existing Emergency Process Protection System, which was divided into two independent Sets of initiating equipment. The DSS is independent and diverse initiating equipment from the existing 1st Set equipment; with each set having its own independent in-core and ex-core sensors for measurement of neutron flux and process parameters. The 2nd Set of initiating equipment for measuring ex-core neutron flux, was modernized with new design of 4 Ex-Core detectors each have a single low level neutron flux detector and two high range neutron detectors. They are comprising: 1. A fission chamber which operates in pulse mode to cover the low flux levels. 2. A compensated ionisation chamber in current mode to operate at high flux level. This detector is doubled to give a measurement of the axial deviation. Two detectors are enough to produce the axial power deviation. The results of testing and analysis of pilot operation of ex-core neutron sensors of DSS will be shown on the Report. (author)

  15. Perilla frutescens extract ameliorates DSS-induced colitis by suppressing proinflammatory cytokines and inducing anti-inflammatory cytokines.

    Science.gov (United States)

    Urushima, Hayato; Nishimura, Junichi; Mizushima, Tsunekazu; Hayashi, Noriyuki; Maeda, Kazuhisa; Ito, Toshinori

    2015-01-01

    Anti-inflammatory effects have been reported in Perilla frutescens leaf extract (PE), which is a plant of the genus belonging to the Lamiaceae family. We examined the effect of PE on dextran sulfate sodium (DSS)-induced colitis. Preliminarily, PE was safely administered for 7 wk without any adverse effects. In the preventive protocol, mice were fed 1.5% DSS solution dissolved in distilled water (control group) or 0.54% PE solution (PE group) ad libitum for 7 days. In the therapeutic protocol, distilled water or 0.54% PE solution was given for 10 days just after administration of 1.5% DSS for 5 days. PE intake significantly improved body weight loss. The serum cytokine profile demonstrated that TNF-α, IL-17A, and IL-10 were significantly lower in the PE group than in the control group. In the therapeutic protocol, mice in the PE group showed significantly higher body weight and lower histological colitis scores compared with mice in the control group on day 15. The serum cytokine profile demonstrated that TGF-β was significantly higher in the PE group than in the control group. In distal colon mRNA expression, TNF-α, and IL-17A were significantly downregulated. In vitro analyses of biologically active ingredients, such as luteolin, apigenin, and rosmarinic acid, in PE were performed. Luteolin suppressed production of proinflammatory cytokines, such as TNF-α, IL-1β, IL-6, and IL-17A. Apigenin also suppressed secretion of IL-17A and increased the anti-inflammatory cytokine IL-10. Rosmarinic acid increased the regulatory T cell population. We conclude that PE might be useful in treatment and prevention of DSS-induced colitis. PMID:25359539

  16. 4.5 Years of Multi-wavelength Observations of MRK 421 During the ARGO-YBJ and FERMI Common Operation Time

    Science.gov (United States)

    Bartoli, B.; Bernardini, P.; Bi, X. J.; Cao, Z.; Catalanotti, S.; Chen, S. Z.; Chen, T. L.; Cui, S. W.; Dai, B. Z.; D'Amone, A.; Danzengluobu; De Mitri, I.; D'Ettorre Piazzoli, B.; Di Girolamo, T.; Di Sciascio, G.; Feng, C. F.; Feng, Zhaoyang; Feng, Zhenyong; Gou, Q. B.; Guo, Y. Q.; He, H. H.; Hu, Haibing; Hu, Hongbo; Iacovacci, M.; Iuppa, R.; Jia, H. Y.; Labaciren; Li, H. J.; Liu, C.; Liu, J.; Liu, M. Y.; Lu, H.; Ma, L. L.; Ma, X. H.; Mancarella, G.; Mari, S. M.; Marsella, G.; Mastroianni, S.; Montini, P.; Ning, C. C.; Perrone, L.; Pistilli, P.; Salvini, P.; Santonico, R.; Shen, P. R.; Sheng, X. D.; Shi, F.; Surdo, A.; Tan, Y. H.; Vallania, P.; Vernetto, S.; Vigorito, C.; Wang, H.; Wu, C. Y.; Wu, H. R.; Xue, L.; Yang, Q. Y.; Yang, X. C.; Yao, Z. G.; Yuan, A. F.; Zha, M.; Zhang, H. M.; Zhang, L.; Zhang, X. Y.; Zhang, Y.; Zhao, J.; Zhaxiciren; Zhaxisangzhu; Zhou, X. X.; Zhu, F. R.; Zhu, Q. Q.; ARGO-YBJ Collaboration

    2016-01-01

    We report on the extensive multi-wavelength observations of the blazar Markarian 421 (Mrk 421) covering radio to γ-rays, during the 4.5 year period of ARGO-YBJ and Fermi common operation time, from 2008 August to 2013 February. These long-term observations, extending over an energy range of 18 orders of magnitude, provide a unique chance to study the variable emission of Mrk 421. In particular, due to the ARGO-YBJ and Fermi data, the entire energy range from 100 MeV to 10 TeV is covered without any gap. In the observation period, Mrk 421 showed both low- and high-activity states at all wavebands. The correlations among flux variations in different wavebands were analyzed. The X-ray flux is clearly correlated with the TeV γ-ray flux, while the GeV γ-rays only show a partial correlation with the TeV γ-rays. Radio and UV fluxes seem to be weakly or not correlated with the X-ray and γ-ray fluxes. Seven large flares, including five X-ray flares and two GeV γ-ray flares with variable durations (3-58 days), and one X-ray outburst phase were identified and used to investigate the variation of the spectral energy distribution with respect to a relative quiescent phase. During the outburst phase and the seven flaring episodes, the peak energy in X-rays is observed to increase from sub-keV to a few keV. The TeV γ-ray flux increases up to 0.9-7.2 times the flux of the Crab Nebula. The behavior of GeV γ-rays is found to vary depending on the flare, a feature that leads us to classify flares into three groups according to the GeV flux variation. Finally, the one-zone synchrotron self-Compton model was adopted to describe the emission spectra. Two out of three groups can be satisfactorily described using injected electrons with a power-law spectral index around 2.2, as expected from relativistic diffuse shock acceleration, whereas the remaining group requires a harder injected spectrum. The underlying physical mechanisms responsible for different groups may be related to

  17. ARGO-EDSS: sistema di supporto alle decisioni ambientali per la gestione di eventi inquinanti in ambienti marini = ARGO-EDSS: Environmental Decision Support System for the management of marine pollution Events

    OpenAIRE

    Colantonio, Sara; Martinelli, Massimo; Salvetti, Ovidio

    2013-01-01

    An Environmental Decision Support System, ARGO-EDSS, has been developed to aid the detection, prevention and management of oil spills in marine areas. The system manages heterogeneous data, acquired by a monitoring network of sensorized resources. The multisource data (satellite SAR images, environmental data acquired on buoys, marine traffic information) are processed to detect possible oil spills and, also, apply models for risk analysis, so as to identify areas with high risk of accident a...

  18. LIDERAZGO, LA COMPETENCIA ESENCIAL QUE TRANSFORMÓ UNA EMPRESA COLOMBIANA EN UN GIGANTE INTERNACIONAL: EL CASO DE CEMENTOS ARGOS

    Directory of Open Access Journals (Sweden)

    HÉCTOR OCHOA DÍAZ

    2011-01-01

    Full Text Available Cementos Argos ha sido catalogado como uno de los gigantes de la industria cementera colombiana por su gran capacidad de consolidación en el mercado nacional y sus estrategias de internacionalización poco convencionales. Esta investigación documenta la experiencia internacional de Argos bajo la perspectiva de las teorías de internacionalización de mayor aceptación en laliteratura internacional, haciendo uso del enfoque metodológico de los estudios de caso. Como resultado se encontró que las estrategias de fidelización,aunadas al rediseño organizacional resultado del liderazgo de la alta gerencia, han sido herramientas vitales para asegurar el crecimiento de la compañía en los mercados local y externo.

  19. Hydrogen sulfide from a NaHS source attenuates dextran sulfate sodium (DSS)-induced inflammation via inhibiting nuclear factor-κB

    Science.gov (United States)

    Chen, Xi; Liu, Xi-shuang

    2016-01-01

    This study investigated the alleviating effects of hydrogen sulfide (H2S), derived from sodium hydrosulfide (NaHS), on inflammation induced by dextran sulfate sodium (DSS) in both in vivo and in vitro models. We found that NaHS injection markedly decreased rectal bleeding, diarrhea, and histological injury in DSS-challenged mice. NaHS (20 μmol/L) reversed DSS-induced inhibition in cell viability in Caco-2 cells and alleviated pro-inflammation cytokine expression in vivo and in vitro, indicating an anti-inflammatory function for H2S. It was also found that H2S may regulate cytokine expression by inhibiting the nuclear factor-κB (NF-κB) signaling pathway. In conclusion, our results demonstrated that H2S alleviated DSS-induced inflammation in vivo and in vitro and that the signal mechanism might be associated with the NF-κB signaling pathway. PMID:26984841

  20. Uppermost Jurassic to Lower Cretaceous benthic foraminiferal biostratigraphy at ODP Site 765 on the Argo Abyssal Plain.

    OpenAIRE

    Kaminski, M.A.; Gradstein, F.M.; Geroch, S.

    1992-01-01

    Benthic foraminifers were studied in 99 samples collected from the lower 200 m of Hole 765C. The studied section ranges from the Tithonian to Aptian, and benthic foraminifers can be subdivided into five assemblages on the basis of faunal diversity and stratigraphic ranges of distinctive species. Compared with deep-water assemblages from Atlantic DSDP sites and Poland, assemblages from the Argo Abyssal Plain display a higher diversity of agglutinated forms, which comprise the autochthonous ...

  1. Evaluation of Mid-Depth Currents of NCEP Reanalysis Data in the Tropical Pacific Using ARGO Float Position Information

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    The global project of the Array for Real-time Geostrophic Oceanography (ARGO) provides a unique opportunity to observe the absolute velocity in mid-depths of the world oceans. A total of 1597 velocity vectors at 1000 (2000) db in the tropical Pacific derived from the ARGO float position information during the period November 2001 to October 2004 are used to evaluate the intermediate currents of the National Centers for Environmental Prediction reanalysis. To derive reliable velocity information from ARGO float trajectory points, a rigorous quality control scheme is applied, and by virtue of a correction method for reducing the drift error on the surface in obtaining the velocity vectors, their relative errors are less than 25%. Based on the comparisons from the quantitative velocity vectors and from the space-time average currents, some substantial discrepancies are revealed. The first is that the velocities of the reanalysis at mid-depths except near the equator are underestimated relative to the observed velocities by the floats.The average speed difference between NCEP and ARGO values ranges from about -2.3 cms-1 to -1.8cms-1. The second is that the velocity difference between the ocean model and the observations at 2000dB seems smaller than that at 1000 dB. The third is that the zonal flow in the reanalysis is too dominant so that some eddies could not be simulated, such as the cyclonic eddy to the east of 160°E between 20°N and 30°N at 2000 dB. In addition, it is noticeable that many floats parking at 1000 dB cannot acquire credible mid-depth velocities due to the time information of their end of ascent (start of descent) on the surface in the trajectory files. Thus, relying on default times of parking, descent and ascent in the metadata files gravely confines their application to measuring mid-depth currents.

  2. The Argos-CLS Kalman Filter: Error Structures and State-Space Modelling Relative to Fastloc GPS Data.

    Directory of Open Access Journals (Sweden)

    Andrew D Lowther

    Full Text Available Understanding how an animal utilises its surroundings requires its movements through space to be described accurately. Satellite telemetry is the only means of acquiring movement data for many species however data are prone to varying amounts of spatial error; the recent application of state-space models (SSMs to the location estimation problem have provided a means to incorporate spatial errors when characterising animal movements. The predominant platform for collecting satellite telemetry data on free-ranging animals, Service Argos, recently provided an alternative Doppler location estimation algorithm that is purported to be more accurate and generate a greater number of locations that its predecessor. We provide a comprehensive assessment of this new estimation process performance on data from free-ranging animals relative to concurrently collected Fastloc GPS data. Additionally, we test the efficacy of three readily-available SSM in predicting the movement of two focal animals. Raw Argos location estimates generated by the new algorithm were greatly improved compared to the old system. Approximately twice as many Argos locations were derived compared to GPS on the devices used. Root Mean Square Errors (RMSE for each optimal SSM were less than 4.25 km with some producing RMSE of less than 2.50 km. Differences in the biological plausibility of the tracks between the two focal animals used to investigate the utility of SSM highlights the importance of considering animal behaviour in movement studies. The ability to reprocess Argos data collected since 2008 with the new algorithm should permit questions of animal movement to be revisited at a finer resolution.

  3. Investigation of wind erosion process for estimation, prevention, and control of DSS in Yazd-Ardakan plain.

    Science.gov (United States)

    Ekhtesasi, M R; Sepehr, A

    2009-12-01

    Wind erosion is a phenomenon that is reasonably common in regions where dry winds blow. For the most part, these regions correspond to the dry lands; areas where the soil, generally, is dry and shifting and lacks vegetation for most of the year. The winds are sufficiently strong to lift and move sands and soil particles. The repeated removal of superficial layers by the action of winds can modify the texture of the topsoil, by removing the fine particles and leaving the larger particles. Dust and sandstorm (DSS) is the generic term for a serious environmental phenomenon that involves strong winds that blow a large quantity of dust and fine sand particles away from the ground and carry them over a long distance with significant environmental impacts along the way. In the realm of DSS in Iran country, the people who live in Yazd and Sistan-Baluchestan provinces form a single ecological community due to their geographic proximity and climatic contiguity. The major sources of DSS in the region are believed to be the desert and semidesert areas of the Yazd-Ardakan plain in Yazd province. Both Sistan and Baluchestan are the recipients of this dust. To address the long-range transboundary environmental problem of DSS, a regional cooperation mechanism must be established among the provinces in the region. Yazd-Ardakan plain, with area of about 650,000 ha, is located in the center of Iran, between Yazd and Ardakan cities. The mean annual rainfall is less than 65 mm. Rainfall distribution is a simple modal and more than 70% of it occurs in winter. Plant density varies from 0% to 25%, and Artemisia sieberi is the dominant plant species. The major part of Yazd-Ardakan plain is bare land. According to the recent investigation, more than 20,000-m(3) dust with less than 100-microm diameter falls down annually on Yazd city with an area of 7,000 ha. Horizontal visibility is reduced to less than 6 m in stormy days in some parts of Yazd-Ardakan plain. This phenomenon causes car

  4. Decision-making support on rehabilitation of radioactive contaminated territories based on the use of site-specific PRANA DSS

    International Nuclear Information System (INIS)

    Geographic Information System (GIS) PRANA is a Decision Support System (DSS) for countermeasure analysis in agriculture in the long-term period of liquidating the consequences of a nuclear accident. However, though PRANA(-98) is used at the Chernobyl Department (Ministry of Agriculture) and at the Bryansk Centre of Agrochemical Radiology for practical needs, but its possibilities are limited by the questions of agriculture. Conceptual requirements to GIS-DSSs, which are some considerable extension of the PRANA(-98) and meet all the main demands to DSSs for practical use, research and training on rehabilitation of contaminated territories, were elaborated in contacts with interested parties in Russia: Ministry of Agriculture, Minatom, Emercom, Ministry of Health, Ministry of Science and Administration of Bryansk region. Realisation of the planned requirements and tasks have been achieved not through developing the only universal system, but through creating several GIS-DSSs (family of PRANA systems, each of them is intended for analysis of specific range of problems): - GIS-DSS for practical use (with introduction at appropriate Ministries and Centres); - GIS-DSS for research and for scientific and practical estimations; - GIS-DSS for training of the specialists; - GIS-DSS as well as computer realisation of thematic blocks for use as lectures, seminars and tests/questionnaires for aims of education (students, specialists); - elements of distributed systems and remote access to components of GIS-DSS (for practical use, training and education). The following sections, which have been realised in accordance with the chosen level of the system, represent in the aggregate a basis of each GIS-DSS indicated above: - databases (radioecological, economic, demographic and other monitoring data); - libraries of electronic maps (including different layers of vector maps of land use for territories under consideration); - spatial analysis of various data from databases

  5. Using MicroLEIS DSS to evaluate climate change impacts on land suitability in Andalusia, Spain

    Science.gov (United States)

    Kotb Abd-Elmabod, Sameh; Anaya-Romero, María; Jordán, Antonio; Muñoz-Rojas, Miriam; de la Rosa, Diego

    2013-04-01

    Understanding the effects of climate change on land suitability for crop production has become an important issue with respect to food security in areas undergoing increasing population sizes. Land suitability for six common Mediterranean crops was evaluated under current conditions and future climate change scenario. This evaluation was performed using the Agro-ecological Decision Support System Micro LEIS (MicroLEIS DSS) through the application of Terraza and Cervatana models. Terraza model provides an experimental prediction for the bioclimatic deficiency in the 62 natural regions that represent the Andalusia region. This model is dependent on current climate data, future climate change scenario data, and crop response data including coefficient of photosynthetic efficacy (Kc), coefficient of efficiency (Ky), and soil water retention. Alternatively, the Cervatana model is used to estimate agricultural land use capability under different soil types. Soil morphological and analytical data were collected from SEISnet data base representative of the natural region (NUTS 2) of Andalusia by 62 soil profiles. Agro-climatic data, referred to temperature and precipitation were obtained from the CDBm-Andalusia database, which contains monthly average values of climate variables: mean temperature, maximum and minimum rainfall, number of days of rain and humidity, collected during a consecutive period of 30 years (1960-1990), that represent the current climate scenario. Future climate is represented under A1B scenario for theperiods 2040, 2070 and 2100. These scenarios have been calculated using climate change variation values from the State Meteorological Agency (AEMET, 2011). The results of the Cervatana model depends on Terraza output results (e.g. water deficit class and the risk of frost class) and other land properties including soil factors, slope factors, and erosion risk factors. In order to spatialize the evaluation data, both models were incorporated into a

  6. Observations of new western Mediterranean deep water formation using Argo floats 2004–2006

    Directory of Open Access Journals (Sweden)

    K. Stansfield

    2008-05-01

    Full Text Available The deep convection that occurs in the western basin of the Mediterranean Sea was investigated using Argo float data over two consecutive winters in 2004–2005 and 2005–2006. The results showed deep mixed layers reaching 2000 m in surprising locations, namely the eastern Catalan subbasin (39.785° N, 4.845° E and the western Ligurian subbasin (43.392° N, 7.765° E. Subsequently, new deep water was formed in March of 2005 and 2006 with θ=12.89–12.92°C, S=38.48–38.49 and σθ=29.113 kg m−3. The deep water produced in the Ligurian subbasin during 2006 was more saline, warmer and denser than any historical observations of western Mediterranean deep water. The results show S, θ and σθ in the western Mediterranean deep water are higher than 1990s values, with a salinity increase of 1.5×10−3 yr−1, a temperature increase of 3.6×10−3 °C yr−1 and a density increase of 4.0×10−4 kg m−3 yr−1 apparent from a dataset of western Mediterranean deep water properties spanning 1955–2006.

  7. Measurement of Cosmic Ray Spectrum and Anisotropy with ARGO-YBJ

    Directory of Open Access Journals (Sweden)

    Di Sciascio G.

    2013-06-01

    Full Text Available The combined measurement of the cosmic ray (CR energy spectrum and anisotropy in their arrival direction distribution needs the knowledge of the elemental composition of the radiation to discriminate between different origin and propagation models. Important information on the CR mass composition can be obtained studying the EAS muon content through the measurement of the CR rate at different zenith angles. In this paper we report on the observation of the anisotropy of galactic CRs at different angular scales with the ARGO-YBJ experiment. We report also on the study of the primary CR rate for different zenith angles. The light component (p+He has been selected and its energy spectrum measured in the energy range (5 – 200 TeV for quasi-vertical events. With this analysis for the first time a ground-based measurement of the CR spectrum overlaps data obtained with direct methods for more than one energy decade, thus providing a solid anchorage to the CR spectrum measurements carried out by EAS arrays in the knee region. Finally, a preliminary study of the non-attenuated shower component at a zenith angle θ > 70° (through the observation of the so-called horizantal air showers is presented.

  8. Assessment of Global Oceanic Net Freshwater Flux Products Using Argo Salinity Observations

    Science.gov (United States)

    Ren, L.; Arkin, P. A.; Hackert, E. C.; Busalacchi, A. J.

    2012-12-01

    The annual mean global upper ocean salt budget is investigated using the Argo profiling float data from 2006 to 2011, which provides a way to estimate the annual mean oceanic evaporation and precipitation (E-P) from the ocean salinity. Employing this "ocean rain gauge" concept, E-P estimated from the salt budget is compared with the various satellite based oceanic precipitation and evaporation observational products. In this study, twelve sets of E-P from the evaporation and precipitation products including the precipitation datasets GPCP, CMAP and TRMM and the evaporation datasets OAFlux, GSSTF2b, IFREMER and RSS are compared to the E-P estimated from the salinity. We will describe the spatial patterns of the various E-P products derived from the satellite based data sets and compare these patterns to those derived from the oceanic salinity on the annual mean time scale. We will also examine time series of near-global integrated E-P derived from satellite products and compare them to time series based on oceanic salinity observations as well as continental discharge. This intercomparison of independently derived estimates of fresh water flux at the ocean surface will improve our understanding of errors in remotely sensed estimates of evaporation and precipitation.

  9. The upper ocean response to tropical cyclones in the northwestern Pacific analyzed with Argo data

    Institute of Scientific and Technical Information of China (English)

    LIU Zenghong; XU Jianping; ZHU Bokang; SUN Chaohui; ZHANG Lifeng

    2007-01-01

    A large number of autonomous profiling floats deployed in global oceans have provided abundant temperature and salinity profiles of the upper ocean. Many floats occasionally profile observations during the passage of tropical cyclones. These in-situ observations are valuable and useful in studying the ocean's response to tropical cyclones, which are rarely observed due to harsh weather conditions. In this paper, the upper ocean response to the tropical cyclones in the northwestern Pacific during 2000-2005 is analyzed and discussed based on the data from Argo profiling floats. Results suggest that the passage of tropical cyclones caused the deepening of mixed layer depth (MLD), cooling of mixed layer temperature (MLT), and freshening of mixed layer salinity (MLS). The change in MLT is negatively correlated to wind speed. The cooling of the MLT extended for 50-150 km on the right side of the cyclone track. The change of MLS is almost symmetrical in distribution on both sides of the track, and the change of MLD is negatively correlated to pre-cyclone initial MLD.

  10. COSIMA-DSS Evaluation System: A new Decision Support System for Large-Scale Transport Infrastructure Projects

    DEFF Research Database (Denmark)

    Salling, Kim Bang; Jensen, Anders Vestergaard; Leleur, Steen

    This paper presents a new decision support model COSIMA-DSS that examines socio-economic feasibility risks involved in the implementation of transport infrastructure projects. The model makes use of conventionally cost-benefit analysis embedded within a wider multi-criteria analysis. The basic...... approach set out in the paper looks upon the mix between so-called “hard” and “soft” evaluation criteria. Finally, a Monte-Carlo simulation is used to take account of the varying information relating to the different criteria....

  11. Thermohaline variability in the Adriatic and Northern Ionian Seas observed from the Argo floats during 2010-2014

    Science.gov (United States)

    Kovačević, Vedrana; Ursella, Laura; Gačić, Miroslav; Notarstefano, Giulio; Menna, Milena; Bensi, Manuel; Civitarese, Giuseppe; Poulain, Pierre-Marie

    2015-04-01

    , the signal of the Adriatic dense waters can be fairly irregular and impulsive. Sporadic in-situ surveys by research vessels are not always sufficient to capture this irregularity and its consequences on the circulation. The Lagrangian platforms are disseminated within the whole Mediterranean through the international Argo program. They are a useful tool to assess some of the spatial and temporal variability in the two basins. Combining the information from the floats and in-situ CTD profiles from oceanographic campaigns, we picture the inter-annual variability of the thermohaline properties in general during 2010-2014. In addition, the peculiarities of the very dense water overflow that during 2012 spilled out form the Strait of Otranto into the Northern Ionian is evidenced. Also, by the remotely sensed sea surface topography, we depict the most prominent circulation features of the upper layer.

  12. The use of AQUATOOL DSS applied to the System of Environmental-Economic Accounting for Water (SEEAW)

    Science.gov (United States)

    Pedro-Monzonís, María; Jiménez-Fernández, Pedro; Solera, Abel; Jiménez-Gavilán, Pablo

    2016-02-01

    Currently, water accounts are one of the next steps to be implemented in European River Basin Management Plans. Building water accounts is a complex task, mainly due to the lack of common European definitions and procedures. For their development, when data is not systematically measured, simulation models and estimations are necessary. The main idea of this paper is to present a new approach which enables the combined use of hydrological models and water resources models developed with AQUATOOL Decision Support System (DSS) to fill in the physical water supply and use tables and the asset accounts presented in the System of Economic and Environmental Accounts for Water (SEEAW). The case study is the Vélez River Basin, located in the southern part of the Iberian Peninsula in Spain. In addition to obtaining the physical water supply and use tables and the asset accounts in this river basin, we present here the indicators as a result thereof. These indicators cover many critical aspects of water management, showing a general description of the river basin and allowing decision-makers to characterise the pressures on water resources. As a general conclusion, the union of AQUATOOL DSS and SEEAW will provide more complete information to decision-makers and it enables to introduce these methodological decisions in order to guarantee consistency and comparability of the results between different river basins.

  13. Conjugation, number of Dewar resonance structures (DSs) in homologous polyzethrene and related conjugated polycyclic hydrocarbon series, and kinked versus straight

    Science.gov (United States)

    Dias, Jerry Ray

    2015-11-01

    Kinked polyzethrenes are more stable than linear polyzethrenes making them better candidates as materials for organic electronic devices (e.g., organic field effect transistors, nonlinear optics, and semiconductors) because of their greater singlet biradical properties. For series of molecules constructed by successive attachment of a given aufbau unit, we are able to derive analytical or recursion expressions relating certain properties. For example, starting with a few known number of Dewar resonance structures (DSs) for such a series, one is often able to derive analytical or recursion expressions for these DS values by our method of successive differences which then lead to either constant or Fibonacci numbers, respectively. The increasing order of π-electronic stability of isomers with the same number of Kekulé structures (K) is determined by their increasing number of DSs. Kinked polycyclic conjugated polyenes with a single classical structure (i.e., K = 1) are more conjugated and stable than their straight polycyclic isomers with a single classical structure.

  14. Calibration of the RPC charge readout in the ARGO-YBJ experiment with the iso-gradient method

    International Nuclear Information System (INIS)

    The ARGO-YBJ experiment is a full coverage array of Resistive Plate Chambers (RPCs) with an active area of 5800 m2. In order to eliminate the response difference of the charge readout from the RPCs, a calibration procedure is carried out with the iso-gradient method. This method also allows the extension of the absolute calibration with the muon telescope including scintillation detectors to all the RPCs in the array. The overall systematic uncertainty in measurements of the number of particles by the RPCs is 10.7%. In general, the method gives results consistent with those from a totally different approach also used in the experiment

  15. Sistema de adquisición, almacenamiento y distribución de datos con sistema ARGOS

    OpenAIRE

    Pérez López, Fernando

    2011-01-01

    Proyecto Fin de Carrera del Área de Redes de Computadores de la titulación de Ingeniería Informática. El proyecto versa sobre el desarrollo de un sistema automático de descarga, distribución de datos y transformación de datos de boyas con el sistema ARGOS, así como una aplicación móvil para el sistema operativo móvil iOS, para su uso en dispositivos móviles iPhone.

  16. Measurement of the cosmic ray all-particle and light-component energy spectra with the ARGO-YBJ experiment

    Directory of Open Access Journals (Sweden)

    De Mitri I.

    2015-01-01

    Full Text Available The ARGO-YBJ detector, located at high altitude in the Cosmic Ray Observatory of YangBaJing in Tibet (4300 m asl, about 600 g/cm2 of atmospheric depth provides the opportunity for the study, with unprecedented resolution, of cosmic ray physics in the primary energy region between 1012 and 1016 eV. Preliminary results of the measurements of the all-particle and light-component (i.e. protons and helium energy spectra between approximately 5 TeV and 5 PeV are reported and discussed.

  17. Lactobacillus casei secreting alpha-MSH induces the therapeutic effect on DSS-induced acute colitis in Balb/c Mice.

    Science.gov (United States)

    Yoon, Sun-Woo; Lee, Chul-Ho; Kim, Jeong-Yoon; Kim, Jie-Youn; Sung, Moon-Hee; Poo, Haryoung

    2008-12-01

    The neuropeptide alpha-melanocyte-stimulating hormone (alpha- MSH) has anti-inflammatory property by downregulating the expressions of proinflammatory cytokines. Because alpha-MSH elicits the anti-inflammatory effect in various inflammatory disease models, we examined the therapeutic effect of oral administration of recombinant Lactobacillus casei, which secretes alpha-MSH (L. casei-alpha-MSH), on dextran sulfate sodium (DSS)-induced colitis in Balb/c mice. Thus, we constructed the alpha-MSH-secreting Lactobacillus casei by the basic plasmid, pLUAT-ss, which was composed of a PldhUTLS promoter and alpha-amylase signal sequence from Streptococcus bovis strain. Acute colitis was induced by oral administration of 5% DSS in drinking water for 7 days. To investigate the effect of L. casei-alpha-MSH on the colitis, L. casei or L. casei-alpha-MSH was orally administered for 7 days and their effects on body weight, mortality rate, cytokine production, and tissue myeloperoxidase (MPO) activity were observed. Administration of L. casei-alpha-MSH reduced the symptom of acute colitis as assessed by body weight loss (DSS alone: 14.45+/-0. 2 g; L. casei-alpha- MSH: 18.2+/-0.12 g), colitis score (DSS alone: 3.6+/-0.4; L. casei-alpha-MSH: 1.4+/-0.6), MPO activity (DSS alone: 42.7+/-4.5 U/g; L. casei-alpha-MSH: 10.25+/-0.5 U/g), survival rate, and histological damage compared with the DSS alone mice. L. casei-alpha-MSH-administered entire colon showed reduced in vitro production of proinflammatory cytokines and NF-kappaB activation. The alpha-MSH-secreting recombinant L. casei showed significant anti-inflammatory effects in the murine model of acute colitis and suggests a potential therapeutic role for this agent in clinical inflammatory bowel diseases. PMID:19131702

  18. 基于海温参数模型推算Argo表层温度%Estimation of Argo sea subsurface temperature based on a thermal parametric model

    Institute of Scientific and Technical Information of China (English)

    张春玲; 许建平; 鲍献文; 王振峰; 刘增宏

    2014-01-01

    Argo has become an important part of the global ocean observation system. While, due to the lack of sea surface measurements, application of the Argo data still has some limitations. Based on a simple thermal parametric model,the relationship between sea surface temperature and subsurface temperature was constructed in this paper by the thermal parameters calculated from Argo profile data and WOA09 climatic data. And then sea surface temperature was estimated by Argo subsurface data in the Pacific Ocean. Among them, the thermal parameters were calculated by the maximum angle method. The novel objective method produced the more accurate thermal parameters than those by the iterative technique used in previous studies, such as mixed layer depth, thermocline temperature gradient, thermocline bottom depth and so on. Compared with the SST extrapolated from the traditional method and retrieved from satellite SST,the RMSEs between the estimated Argo surface temperature and the observed GTSPP or Argo NST have been significantly reduced;the correlation coefficient between estimation result and in situ observation was larger as well. The Argo surface temperature estimated by the thermal parametric model in the Pacific Ocean was theoretically proved to be reliable through correlation analysis. This study made up for the lacking of surface observation in Argo. It provided a new way to establish complete Argo data sets.%Argo浮标观测已成为全球海洋观测系统的重要支柱,但因缺乏表层观测,使得Argo观测资料在海洋和大气研究中的应用仍有一定的局限性。基于一个简化的海洋温度参数模型,由Argo剖面观测及气候态数据所确定的垂向海洋温度参数,得到表层与次表层温度的函数关系,进而利用太平洋海域的Argo次表层温度数据来推算表层温度场。其中,海温参数模型的相关参数采用最大角度法求得,利用此方法得到的混合层深度,温跃层梯度,

  19. Bacterial Feeders, the Nematode Caenorhabditis elegans and the Flagellate Cercomonas longicauda, have different Effects on Outcome of Competition among the Pseudomonas Biocontrol Strains CHA0 and DSS73

    DEFF Research Database (Denmark)

    Pedersen, Annette; Nybroe, Ole; Winding, Anne; Ekelund, Flemming; Strandmark, Lisa Bjørnlund

    2009-01-01

    How bacterial feeding fauna affects colonization and survival of bacteria in soil is not well understood, which constrains the applicability of bacterial inoculants in agriculture. This study aimed to unravel how food quality of bacteria and bacterial feeders with different feeding habits (the......50090 or one of two biocontrol strains P. fluorescens CHA0 or Pseudomonas sp. DSS73) or combinations of two bacterial strains. DSM50090 is a suitable food bacterium, DSS73 is of intermediate food quality, and CHA0 is inedible to the bacterial feeders. Bacterial and protozoan cell numbers were measured...

  20. Analyses of phenotype and ARGOS and ASY1 expression in a ploidy Chinese cabbage series derived from one haploid.

    Science.gov (United States)

    Gu, Ai Xia; Zhao, Jian Jun; Li, Li Min; Wang, Yan Hua; Zhao, Yu Jing; Hua, Fan; Xu, Yuan Chao; Shen, Shu Xing

    2016-03-01

    The aim of this research was to improve our understanding of how ploidy level influences phenotype and gene expression in Chinese cabbage (Brassica rapa L. ssp. pekinensis). Haploid plants (2n = 10) was induced by 0.2% colchicine to produce diploid (2n = 20) and tetraploid plants (2n = 40). The aneuploid (2n = 24) was also obtained by hybridization between diploid plants as the female and tetraploid plants. The ploidy levels of all plants were identified through chromosome counts and flow cytometry. Leaves and petals became larger as the ploidy level increased from haploid to diploid, and from aneuploid to tetraploid. Similarly, expression of ARGOS was regulated by genome size, increasing in parallel with the level of ploidy. Among the four ploidy types, expression was stronger in the floral buds than in the leaves. Expression by ASY1 also differed according to ploidy level, being highest in diploid plants, followed in order by tetraploids. Expression was similar between haploids and aneuploids at two stages-prior to and after meiosis-but was higher in the haploids during meiosis. When buds were compared within the same ploidy type at different stages, ASY1 expression was obviously higher during meiosis than either before or after. Our study demonstrated the generation and phenotype of a ploidy Chinese cabbage series derived from one haploid. Expression of genes ARGOS and ASY1 were modulated by genome size in this ploidy series, and the regulated patterns of the two genes was different. PMID:27162487

  1. Implementation of position assimilation for ARGO floats in a realistic Mediterranean Sea OPA model and twin experiment testing

    Directory of Open Access Journals (Sweden)

    V. Taillandier

    2006-05-01

    Full Text Available In this paper, a Lagrangian assimilation method is presented and implemented in a realistic OPA OGCM with the goal of providing an assessment of the assimilation of realistic Argo float position data. We focus on an application in the Mediterranean Sea, where in the framework of the MFSTEP project an array of Argo floats have been deployed with parking depth at 350 m and sampling interval of 5 days. In order to quantitatively test the method, the ''twin experiment'' approach is followed and synthetic trajectories are considered. The method is first tested using ''perfect'' data, i.e. without shear drift errors and with relatively high coverage. Results show that the assimilation is effective, correcting the velocity field at the parking depth, as well as the velocity profiles and the geostrophically adjusted mass field. We then consider the impact of realistic datasets, which are spatially sparse and characterized by shear drift errors. Such data provide a limited global correction of the model state, but they efficiently act on the location, intensity and shape of the described mesoscale structures of the intermediate circulation.

  2. Comparison of Data From Far Ultraviolet Limb Scanning and Imaging Instrumentation Aboard the Advanced Research and Global Observation Satellite (ARGOS)

    Science.gov (United States)

    Walker, P. W.; Carruthers, G. R.; Dymond, K. F.; Finch, M. A.; McDonald, S. E.; Nicholas, A. C.; Thonnard, S. E.; Budzien, S. A.; McCoy, R. P.

    2001-05-01

    The ARGOS satellite includes two Naval Research Laboratory experiments that monitor naturally occurring far ultraviolet emissions in the Earth's upper atmosphere. Coincident observations between these two instruments, the Global Imaging Monitor of the Ionosphere (GIMI) and the Low Resolution Airglow and Auroral Spectrograph (LORAAS), have been obtained. The GIMI instrument produces 9 ° x 9 ° limb images with passband coverage between 131 and 200 nm. The LORAAS instrument provides the spectral distribution from 80 to 170 nm for 2.4 ° x 17 ° field of regard. The two instruments are coaligned aboard the spacecraft, aft-looking in the orbital plane. Preliminary comparisons of observations obtained from the imaging and scanning instruments under quiet geomagnetic conditions are reported, including irradiances and spectral distributions. By combining the GIMI data with that from LORAAS, the study of the dynamics of the ionosphere can be expanded to investigate both horizontal and vertical distrubutions and their variances. The improved capability can extend to the study of active periods with highly variable and disturbed ionospheres, and examples are discussed from data acquired during periods of high geomagnetic activity. These results provide the first direct comparison between near simultaneous limb scans and images from ARGOS, and show promise as a validation technique to improve capabilities for the study of ionospheric variability.

  3. Temperature signature of high latitude Atlantic boundary currents revealed by marine mammal-borne sensor and Argo data

    Science.gov (United States)

    Grist, Jeremy P.; Josey, Simon A.; Boehme, Lars; Meredith, Michael P.; Davidson, Fraser J. M.; Stenson, Garry B.; Hammill, Mike O.

    2011-08-01

    Results from the development and analysis of a novel temperature dataset for the high latitude North-West Atlantic are presented. The new 1° gridded dataset (“ATLAS”) has been produced from about 13,000 Argo and 48,000 marine mammal (hooded seal, harp seal, grey seal and beluga) profiles spanning 2004-8. These data sources are highly complementary as marine mammals greatly enhance shelf region coverage where Argo floats are absent. ATLAS reveals distinctive boundary current related temperature minima in the Labrador Sea (-1.1°C) and at the east Greenland coast (1.8°C), largely absent in the widely-used Levitus'09 and EN3v2a datasets. The ATLAS 0-500 m average temperature is lower than Levitus'09 and EN3v2a by up to 3°C locally. Differences are strongest from 0-300 m and persist at reduced amplitude from 300-500 m. Our results clearly reveal the value of marine mammal-borne sensors for a reliable description of the North-West Atlantic at a time of rapid change.

  4. An Ensemble Recentering Kalman Filter with an Application to Argo Temperature Data Assimilation into the NASA GEOS-5 Coupled Model

    Science.gov (United States)

    Keppenne, Christian L.

    2013-01-01

    A two-step ensemble recentering Kalman filter (ERKF) analysis scheme is introduced. The algorithm consists of a recentering step followed by an ensemble Kalman filter (EnKF) analysis step. The recentering step is formulated such as to adjust the prior distribution of an ensemble of model states so that the deviations of individual samples from the sample mean are unchanged but the original sample mean is shifted to the prior position of the most likely particle, where the likelihood of each particle is measured in terms of closeness to a chosen subset of the observations. The computational cost of the ERKF is essentially the same as that of a same size EnKF. The ERKF is applied to the assimilation of Argo temperature profiles into the OGCM component of an ensemble of NASA GEOS-5 coupled models. Unassimilated Argo salt data are used for validation. A surprisingly small number (16) of model trajectories is sufficient to significantly improve model estimates of salinity over estimates from an ensemble run without assimilation. The two-step algorithm also performs better than the EnKF although its performance is degraded in poorly observed regions.

  5. Direct measurements of surface and mid-depth circulation in the Shikoku Basin by Argo profiling floats

    Institute of Scientific and Technical Information of China (English)

    ZHOU Hui; GUO Peifang; XU Jianping; SHI Maochong

    2007-01-01

    The circulation in the Shikoku Basin plays a very important role in the pathway of the Kuroshio and the water exchange in the subtropical gyre in the North Pacific Ocean. The Argo profiling floats deployed in the Shikoku Basin are used to study the circulations and water masses in the basin. The trajectories and parking depth velocity fields derived from all Argo floats show an anticyclonic circulation at 2 000 m in the Shikoku Basin. There are inhanced eddy activities in the Shikoku Basin, which have large influence on the Shikoku Basin circulation patterns. The characteristics of temperature - salinity curves indicate that there are North Pacific Ocean tropical water (NPTW), North Pacific Ocean subtropical mode water (NPSTMW) and North Pacific Ocean intermediate water (NPIW) in the Shikoku Basin. The NPTW is only exists south of 32°N. In the middle part of the basin, which is 28°~31°N,133°~135°E, there is a confluence region. Water masses coming from the Kuroshio mix with the water in the Shikoku Basin.

  6. Interpretation of Postmodern Feminism in Argo%《逃离德黑兰》的后现代女性主义解读

    Institute of Scientific and Technical Information of China (English)

    张乔源

    2015-01-01

    作为一部惊心动魄、扣人心弦的政治大片,《逃离德黑兰》充斥着浓烈的美国式个人英雄主义和爱国主义。然而爱国主义主旋律的背后却也隐藏着不可磨灭的男权印记。基于后现代女性主义,从男性话语霸权、两性二元对立思维模式以及女性内部的异化和压迫等三个方面着手,分析《逃离德黑兰》中的男权色彩。%As one of the most impressive political films, Argo is filled with American individual heroism and patriotism.However, be-hind the cover of patriotism, Argo reflects the patriarchal society and male chauvinism.Based on Postmodern Feminism, this paper at-tempts to analyze Argo from the perspective of the discourse hegemony of male, gender dichotomy as well as the internal alienation and oppression of female, so as to reflect the patriarchy in Argo.

  7. COMPARISON OF UV FLUORESCENCE AND GAS CHROMATOGRAPHIC ANALYSES OF HYDROCARBONS IN SEDIMENTS FROM THE VICINITY OF THE ARGO MERCHANT WRECK SITE

    Science.gov (United States)

    On December 15, 1976, the tanker ARGO MERCHANT ran aground on Fishing Rip of Nantucket Shoals off the Massachusetts coast. Within one week she had broken into three parts. Chemists from the U.S. Coast Guard Research and Development Center (USCGRDC) using u.v. fluorescence spectro...

  8. How can sludge dewatering devices be assessed? Development of a new DSS and its application to real case studies.

    Science.gov (United States)

    Bertanza, Giorgio; Papa, Matteo; Canato, Matteo; Collivignarelli, Maria Cristina; Pedrazzani, Roberta

    2014-05-01

    A key issue in biological Waste Water Treatment Plants (WWTPs) operation is represented by the sludge management. Mechanical dewatering is a crucial stage for sludge volume reduction; though, being a costly operation, its optimization is required. We developed an original experimental methodology to evaluate the technical (dewatering efficiency) and financial (total treatment costs) performance of dewatering devices, which might be used as a DSS (Decision Support System) for WWTP managers. This tool was then applied to two real case studies for comparing, respectively, three industrial size centrifuges, and two different operation modes of the same machine (fixed installation vs. outsourcing service). In both the cases, the best option was identified, based jointly on economic and (site-specific) technical evaluations. PMID:24603031

  9. An upper ocean response to Typhoon Bolaven analyzed with Argo profiling floats

    Institute of Scientific and Technical Information of China (English)

    LIU Zenghong; XU Jianping; SUN Chaohui; WU Xiaofen

    2014-01-01

    In situ observations from Argo profiling floats combined with satellite retrieved SST and rain rate are used to investigate an upper ocean response to Typhoon Bolaven from 20 through 29 August 2012. After the passage of Typhoon Bolaven, the deepening of mixed layer depth (MLD), and the cooling of mixed layer temperature (MLT) were observed. The changes in mixed layer salinity (MLS) showed an equivalent number of increasing and decreasing because the typhoon-induced salinity changes in the mixed layer were influenced by precipi-tation, evaporation, turbulent mixing and upwelling of thermocline water. The deepening of the MLD and the cooling of the MLT indicated a significant rightward bias, whereas the MLS was freshened to the left side of the typhoon track and increased on the other side. Intensive temperature and salinity profiles observed by Iridium floats make it possible to view response processes in the upper ocean after the passage of a typhoon. The cooling in the near-surface and the warming in the subsurface were observed by two Iridium floats located to the left side of the cyclonic track during the development stage of the storm, beyond the radius of maxi-mum winds relative to the typhoon center. Water salinity increases at the base of the mixed layer and the top of the thermocline were the most obvious change observed by those two floats. On the right side of the track and near the typhoon center when the typhoon was intensified, the significant cooling from sea surface to a depth of 200×104 Pa, with the exception of the water at the top of the thermocline, was observed by the other Iridium float. Owing to the enhanced upwelling near the typhoon center, the water salinity in the near-surface increased noticeably. The heat pumping from the mixed layer into the thermocline induced by downwelling and the upwelling induced by the positive wind stress curl are the main causes for the different temperature and salinity variations on the different sides of the

  10. Variation of Indo-Pacific upper ocean heat content during 2001–2012 revealed by Argo

    Institute of Scientific and Technical Information of China (English)

    WU Xiaofen; LIU Zenghong; LIAO Guanghong; WU Lingjuan

    2015-01-01

    Understanding of the temporal variation of oceanic heat content (OHC) is of fundamental importance to the prediction of climate change and associated global meteorological phenomena. However, OHC characteristics in the Pacific and Indian oceans are not well understood. Based on in situ ocean temperature and salinity profiles mainly from the Argo program, we estimated the upper layer (0–750 m) OHC in the Indo-Pacific Ocean (40°S–40°N, 30°E–80°W). Spatial and temporal variability of OHC and its likely physical mechanisms are also analyzed. Climatic distributions of upper-layer OHC in the Indian and Pacific oceans have a similar saddle pattern in the subtropics, and the highest OHC value was in the northern Arabian Sea. However, OHC variabilities in the two oceans were different. OHC in the Pacific has an east-west see-saw pattern, which does not appear in the Indian Ocean. In the Indian Ocean, the largest change was around 10°S. The most interesting phenomenon is that, there was a long-term shift of OHC in the Indo-Pacific Ocean during 2001–2012. Such variation coincided with modulation of subsurface temperature/salinity. During 2001–2007, there was subsurface cooling (freshening) nearly the entire upper 400 m layer in the western Pacific and warming (salting) in the eastern Pacific. During 2008–2012, the thermocline deepened in the western Pacific but shoaled in the east. In the Indian Ocean, there was only cooling (upper 150 m only) and freshening (almost the entire upper 400 m) during 2001–2007. The thermocline deepened during 2008–2012 in the Indian Ocean. Such change appeared from the equator to off the equator and even to the subtropics (about 20°N/S) in the two oceans. This long-term change of subsurface temperature/salinity may have been caused by change of the wind field over the two oceans during 2001–2012, in turn modifying OHC.

  11. Surface motility in Pseudomonas sp DSS73 is required for efficient biological containment of the root-pathogenic microfungi Rhizoctonia solani and Pythium ultimum

    DEFF Research Database (Denmark)

    Andersen, Jens Bo; Koch, Birgit; Nielsen, T.H.;

    2003-01-01

    Pseudomonas sp. DSS73 was isolated from the rhizoplane of sugar beet seedlings. This strain exhibits antagonism towards the root-pathogenic microfungi Pythium ultimum and Rhizoctonia solani. Production of the cyclic lipopeptide amphisin in combination with expression of flagella enables the growing...

  12. DSS-13 - Using an OSI process control standard for monitor and control. [Deep Space Network experimental station applying Open System interconnection

    Science.gov (United States)

    Heuser, W. R.; Chen, Richard L.; Stockett, Michael H.

    1993-01-01

    The flexibility and robustness of a monitor and control (M&C) system are a direct result of the underlying inter-processor communications architecture. A new architecture for M&C at the Deep Space Communications Complexes has been developed based on the manufacturing message specification (MMS) process control standard of the open system interconnection (OSI) suite of protocols. This architecture has been tested both in a laboratory environment and under operational conditions at the Deep Space Network experimental station (DSS-13). The DSS-13 experience in the application of OSI standards to support M&C has been extremely successful. MMS meets the functional needs of the station and provides a level of flexibility and responsiveness previously unknown in that environment. The architecture is robust enough to meet current operational needs and flexible enough to provide a migration path for new subsystems. This paper describes the architecture of the DSS-13 M&C system, discuss how MMS was used and the requirements this imposed on other parts of the system, and provides results from systems and operational testing at DSS-13.

  13. Investigation of the physical parameters of duplex stainless steel (DSS surface integrity after turning

    Directory of Open Access Journals (Sweden)

    G. Krolczyk

    2015-01-01

    Full Text Available The article presents the influence of machining parameters on the microhardness of surface integrity (SI after turning by means of a coated sintered carbide wedge with a coating with ceramic intermediate layer. The investigation comprised the influence of cutting speed on the SI microhardness in dry machining. The material under investigation was duplex stainless steel with two-phase ferritic-austenitic structure. The results obtained allow for conclusions concerning the exploitation features of processed machine parts.

  14. Investigation of the physical parameters of duplex stainless steel (DSS) surface integrity after turning

    OpenAIRE

    G. Krolczyk; Nieslony, P.; S. Legutko; I. Samardzic

    2015-01-01

    The article presents the influence of machining parameters on the microhardness of surface integrity (SI) after turning by means of a coated sintered carbide wedge with a coating with ceramic intermediate layer. The investigation comprised the influence of cutting speed on the SI microhardness in dry machining. The material under investigation was duplex stainless steel with two-phase ferritic-austenitic structure. The results obtained allow for conclusions concerning the exploitation feature...

  15. Understanding Legacy Features with Featureous

    DEFF Research Database (Denmark)

    Olszak, Andrzej; Jørgensen, Bo Nørregaard

    2011-01-01

    Java programs called Featureous that addresses this issue. Featureous allows a programmer to easily establish feature-code traceability links and to analyze their characteristics using a number of visualizations. Featureous is an extension to the NetBeans IDE, and can itself be extended by third...

  16. Argo float observations of basin-scale deep convection in the Irminger sea during winter 2011-2012

    Science.gov (United States)

    Piron, Anne; Thierry, Virginie; Mercier, Herlé; Caniaux, Guy

    2016-03-01

    Analysis of Argo data obtained during winter 2011-2012 revealed the presence over the Irminger Basin of an exceptionally large number of profiles (41) with mixed layer depths (MLD) exceeding 700 m, which was deep enough to reach the pool of the intermediate Labrador Sea Water located in the Irminger Sea. Four of these profiles exhibited an MLD of 1000 m, which was the maximum value observed for the winter in question. The Argo sampling in the Irminger Sea during that winter, which was 3-4 times greater than for the preceding winters, enabled the different phases of the mixed layer deepening down to 1000 m, together with their spatial extents, to be observed for the first time. Two intense convective periods occurred: in late January south of Cape Farewell and in late February-early March east of Greenland. A final deepening period was observed in mid-March, during which the deepest mixed layers were observed. This long deepening period occurred in large regional areas and was followed by a rapid restratification phase. The temporal evolution of oxygen profiles from one Argo float testifies to the local and rapid ventilation of the mixed layer by the deep convection. A mixed layer heat budget along the trajectories of the 4 floats that sampled the deepest mixed layers showed that heat loss at the air-sea interface was mainly responsible for heat content variations in the mixed layer. Greenland Tip Jets were of primary importance for the development of deep convection in the Irminger Sea in the winter of 2011-2012. They enhanced the winter heat loss and two long (more than 24 h), intense late events close together in time pushed the mixed layer deepening down to 1000 m. Net air-sea fluxes, the number of Greenland Tip Jets, the stratification of the water column, the NAO index and the Ekman-induced heat flux are pertinent indicators to assess conditions that are favorable for the development of deep convection in the Irminger Sea. By considering each of those

  17. Temperature profiles from XBT casts from the AMERICAN ARGO and other platforms as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 26 June 1980 to 09 September 1980 (NODC Accession 8000474)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profiles were collected from XBT casts from the AMERICAN ARGO and other platforms from 26 June 1980 to 09 September 1980. Data were collected by...

  18. Sea Surface Salinity And Barrier Layer Variability In The Equatorial Pacific As Seen From Aquarius And Argo

    OpenAIRE

    Qu, T. D.; Song, Y. T.; Maes, C.

    2014-01-01

    ISI Document Delivery No.: AB6DZ Times Cited: 0 Cited Reference Count: 52 Cited References: Alory G, 2012, J GEOPHYS RES-OCEANS, V117, DOI 10.1029/2011JC007802 Ando K, 1997, J GEOPHYS RES-OCEANS, V102, P23063, DOI 10.1029/97JC01443 Argo Steering Team, 1998, 21 ARG STEER TEAM IN, V21 BINGHAM FM, 1995, DEEP-SEA RES PT I, V42, P1545, DOI 10.1016/0967-0637(95)00064-D Bosc C, 2009, J GEOPHYS RES-OCEANS, V114, DOI 10.1029/2008JC005187 Boutin J, 2013, OCEAN SCI, V9, P183, DOI 10.5194/os-9-183-2013 B...

  19. Evaluation of outputs from a 'Sustainable Nutrient Management Decision Support System' (SNM-DSS) compared to farmer opinion

    Science.gov (United States)

    Kerebel, A.; Cassidy, R.; Jordan, P.; Holden, N. M.

    2012-04-01

    Eutrophication of both fresh and coastal water bodies is one of the greatest threats to water quality in Europe and other developed countries. Sources of pollution are multiple but agriculture is known to be a large contributor, due to farm nutrient management such as land spreading of fertilisers and their subsequent loss via overland flow to surface waters. The stringent targets set for compliance with the Water Framework Directive by 2015 have led to action by the Irish regulatory authorities to reduce risk and prevent further deterioration of water status. One step was to prohibit the spreading of fertilisers over the winter period, with closed periods in 3 zones based on annual rainfall statistics. While this calendar approach is supported by scientific evidence, its justification has been debated by the farming community. A consequence of the regulation has been the concentration of hazard on dates directly preceding and following the closed period when soils can be heavily loaded with organic slurries and manures. An alternative lies in a Sustainable Nutrient Management Decision Support System (SNM-DSS), which has been developed to predict optimum conditions for fertiliser application depending on real-time observations of soil and weather conditions. The Hybrid Soil Moisture Deficit (HSMD) model forms the basis of this system and is essential for defining the thresholds for optimum management. The model outputs were tested against field water content data (θ) and evaluated by comparison with farmer opinion over a 3-year period. Daily Soil Moisture Deficit (SMD) was calculated from weather data collected on 5 sites and θ was estimated using time domain Reflectometry probes on 10 fields (2 × 5 sites). The question "Can slurry be spread today?" was also answered on a daily basis by 6 farmers located at the instrumented sites and the responses were related to calculated SMD values. A significant relationship between SMD and θ for all test sites showed that

  20. Analysis on the characteristics of sound speed in the northern South China Sea based on Argo data%基于Argo观测资料的南海北部海域声速场时空特征分析

    Institute of Scientific and Technical Information of China (English)

    张伟涛; 张韧; 王辉瓒; 安玉柱; 陈建; 段志刚

    2013-01-01

    Based on the Argo profile data of nearly 5 years,the spatial-temporal variation characteristics of sound speed profiles in northern South China Sea were analyzed by Empirical Orthogonal Function (EOF),and then the sound speed characteristics for different depths were obtained by interpolating the scattered Argo sound speed data into regular gridded data.The results were shown as follows:The first 1-6 modes reflected the main features of the sound speed structure.The first mode,with an obvious year cycle,was closely related to the mixed layer.The second mode,with a phase contrary to the first mode,mainly worked in the subsurface.The third mode mainly affected the layers beneath the subsurface.The horizontal distributions of sound speed were different at each depth,and the sound speed at surface was notably influenced by water temperature while the sound speed below the surface was closely relative to the circulation system and water mass displacement.Cold eddy caused low sound speed zones.Both the Luzon cold eddy and the Vietnam cold eddy caused low sound speed zones.%利用近5年的Argo剖面序列,通过经验正交函数(EOF)分析,分析了南海北部海域声速垂直结构的时空变化特征和声速场水平分布特征.分析表明:EOF的前6个模态反映了海区声速结构的主要变化,可以很好地表示声速剖面.第1模态具有明显的年变化周期,主要受海洋混合层季节性变化影响;第2模态与第1模态时间函数具有明显的反向变化特征,主要对次表层进行调制;第3模态主要影响次表层以下声速变化;表层声速分布与深层声速分布有明显的差异,表层声速主要受海水温度变化的影响,深层声速分布与南海环流系统关系密切;冷涡的存在会引起声速场的低值中心.

  1. 2-D Crustal thermal structure along Thuadara–Sindad DSS profile across Narmada– Son lineament, central India

    Indian Academy of Sciences (India)

    S N Rai; S Thiagarajan

    2007-08-01

    Central India is traversed by a WSW–ENE trending Narmada–Son lineament (NSL) which is characterized by the presence of numerous hot springs, feeder dykes for Deccan Traps and seismicity all along its length. It is divided in two parts by the Barwani–Sukta Fault (BSF). To the west of this fault a graben exists, whereas to the east the basement is uplifted between Narmada North Fault (NNF) and Narmada South Fault (NSF). The present work deals with the 2-D thermal modeling to delineate the crustal thermal structure of the western part of NSL region along the Thuadara–Sindad Deep Seismic Sounding (DSS) profile which runs almost in the N–S direction across the NSL. Numerical results of the model reveal that the conductive surface heat flow value in the region under consideration varies between 45 and 47mW/m2. Out of which 23mW/m2 is the contribution from the mantle heat flow and the remaining from within the crust. The Curie depth is found to vary between 46 and 47 km and is in close agreement with the earlier reported Curie depth estimated from the analysis of MAGSAT data. The Moho temperature varies between 470 and 500°C. This study suggests that this western part of central Indian region is characterized by low mantle heat flow which in turn makes the lower crust brittle and amenable to the occurrence of deep focused earthquakes such as Satpura (1938) earthquake.

  2. Evaluating the role of vegetation on the transport of contaminants associated with a mine tailing using the Phyto-DSS

    International Nuclear Information System (INIS)

    We identified contaminants associated with the Cata mine tailing depot located in the outskirts of the city of Guanajuato, Mexico. We also investigated strategies for their phytomanagement. Silver and antimony were present at 39 and 31 mg kg-1, respectively, some twofold higher than the Dutch Intervention Values. Total and extractable boron (B) occurred at concentrations of 301 and 6.3 mg L-1, respectively. Concentrations of B in soil solution above 1.9 mg L-1 have been shown to be toxic to plants. Plant growth may also be inhibited by the low concentrations of extractable plant nutrients. Analysis of the aerial portions of Aloe vera (L. Burm.f.) revealed that this plant accumulates negligible concentrations of the identified contaminants. Calculations using a whole system model (Phyto-DSS) showed that establishing a crop of A. vera would have little effect on the drainage or leaching from the site. However, this plant would reduce wind and water erosion and potentially produce valuable cosmetic products. In contrast, crops of poplar, a species that is tolerant to high soil B concentrations, would mitigate leaching from this site. Alternate rows of trees could be periodically harvested and be used for timber or bioenergy.

  3. Evaluating the role of vegetation on the transport of contaminants associated with a mine tailing using the Phyto-DSS

    Energy Technology Data Exchange (ETDEWEB)

    Cano-Resendiz, Omar [Departamento de Ingenieria Quimica, Universidad de Guanajuato, Noria Alta s/n, CP 36050 Guanajuato (Mexico); Rosa, Guadalupe de la, E-mail: delarosa@quijote.ugto.mx [Departamento de Ingenieria Quimica, Universidad de Guanajuato, Noria Alta s/n, CP 36050 Guanajuato (Mexico); Cruz-Jimenez, Gustavo [Departamento de Farmacia, Universidad de Guanajuato, Noria Alta s/n, CP 36050 Guanajuato (Mexico); Gardea-Torresdey, Jorge L. [Chemistry Department and Environmental Science and Engineering, Ph.D. Program, The University of Texas at El Paso, 500 W. University Ave., 79968 El Paso, TX (United States); Robinson, Brett H. [Agriculture and Life Sciences, Lincoln University, P.O. Box 84 Lincoln, Canterbury 7646 (New Zealand)

    2011-05-15

    We identified contaminants associated with the Cata mine tailing depot located in the outskirts of the city of Guanajuato, Mexico. We also investigated strategies for their phytomanagement. Silver and antimony were present at 39 and 31 mg kg{sup -1}, respectively, some twofold higher than the Dutch Intervention Values. Total and extractable boron (B) occurred at concentrations of 301 and 6.3 mg L{sup -1}, respectively. Concentrations of B in soil solution above 1.9 mg L{sup -1} have been shown to be toxic to plants. Plant growth may also be inhibited by the low concentrations of extractable plant nutrients. Analysis of the aerial portions of Aloe vera (L. Burm.f.) revealed that this plant accumulates negligible concentrations of the identified contaminants. Calculations using a whole system model (Phyto-DSS) showed that establishing a crop of A. vera would have little effect on the drainage or leaching from the site. However, this plant would reduce wind and water erosion and potentially produce valuable cosmetic products. In contrast, crops of poplar, a species that is tolerant to high soil B concentrations, would mitigate leaching from this site. Alternate rows of trees could be periodically harvested and be used for timber or bioenergy.

  4. Anti-inflammatory effects of Lactobacillus casei BL23 producing or not a manganese-dependant catalase on DSS-induced colitis in mice

    Directory of Open Access Journals (Sweden)

    Corthier Gérard

    2007-07-01

    Full Text Available Abstract Background Human immune cells generate large amounts of reactive oxygen species (ROS throughout the respiratory burst that occurs during inflammation. In inflammatory bowel diseases, a sustained and abnormal activation of the immune system results in oxidative stress in the digestive tract and in a loss of intestinal homeostasis. We previously showed that the heterologous production of the Lactobacillus plantarum ATCC14431 manganese-dependant catalase (MnKat in Lb. casei BL23 successfully enhances its survival when exposed to oxidative stress. In this study, we evaluated the preventive effects of this antioxidative Lb. casei strain in a murine model of dextran sodium sulfate (DSS-induced moderate colitis. Results Either Lb. casei BL23 MnKat- or MnKat+ was administered daily to mice treated with DSS for 10 days. In contrast to control mice treated with PBS for which DSS induced bleeding diarrhea and mucosal lesions, mice treated with both Lb. casei strains presented a significant (p Conclusion No contribution of MnKat to the protective effect from epithelial damage has been observed in the tested conditions. In contrast, these results confirm the high interest of Lb. casei as an anti-inflammatory probiotic strain.

  5. Ethanol Extract of Cordyceps militaris Grown on Germinated Soybeans Attenuates Dextran-Sodium-Sulfate- (DSS- Induced Colitis by Suppressing the Expression of Matrix Metalloproteinases and Inflammatory Mediators

    Directory of Open Access Journals (Sweden)

    Dong Ki Park

    2013-01-01

    Full Text Available The effect of Cordyceps militaris (CM grown on germinated soybeans (GSC in the inflammatory bowel disease (IBD model was studied. To demonstrate the preventive effect of GSC extract in a dextran-sodium-sulfate- (DSS- induced acute colitis mouse model, GSC was administered 2 days before DSS coadministration. GSC significantly suppressed DSS-induced disease activity index (DAI as well as histopathological scores, compared to control or CM-treated group. To elucidate the anti-IBD activity of GSC, we checked the level of matrix metalloproteinases (MMPs and inflammatory mediators. GSC extract decreased the level of MMP-3 and -9 mRNAs and p53 proteins. The level and activity of LPS-induced MMP-9 were reduced in GSC-treated RAW264.7 cells. It also attenuated the level of inducible nitric oxide synthase (iNOS and tumor necrosis factor- (TNF- α mRNAs both in colon tissue and in macrophage cells. These results suggest that GSC can be applied as a protective agent against IBDs.

  6. Flt3/Flt3L Participates in the Process of Regulating Dendritic Cells and Regulatory T Cells in DSS-Induced Colitis

    Directory of Open Access Journals (Sweden)

    Jing-Wei Mao

    2014-01-01

    Full Text Available The immunoregulation between dendritic cells (DCs and regulatory T cells (T-regs plays an important role in the pathogenesis of ulcerative colitis (UC. Recent research showed that Fms-like tyrosine kinase 3 (Flt3 and Flt3 ligand (Flt3L were involved in the process of DCs regulating T-regs. The DSS-induced colitis model is widely used because of its simplicity and many similarities with human UC. In this study, we observe the disease activity index (DAI and histological scoring, detect the amounts of DCs and T-regs and expression of Flt3/Flt3L, and investigate Flt3/Flt3L participating in the process of DCs regulating T-regs in DSS-induced colitis. Our findings suggest that the reduction of Flt3 and Flt3L expression may possibly induce colonic immunoregulatory imbalance between CD103+MHCII+DCs and CD4+CD25+FoxP3+T-regs in DSS-induced colitis. Flt3/Flt3L participates in the process of regulating DCS and T-regs in the pathogenesis of UC, at least, in the acute stage of this disease.

  7. Influence of the Qinghai-Tibetan railway on the habitat selection of wild animals, using satellite data and satellite-based ARGOS system data

    Science.gov (United States)

    Buhe, Aosier

    The Qinghai-Tibet Railway (QTR) was in trial operation since 1 July 2006, is the world's highest-elevation railway and the longest highland railway, extending over 1956 km from Xining (Qinghai's capital in northwestern China) to Lhasa, the capital city of the Tibet Autonomous Region. This QTR railway was crosses five nature reserves along the route Hoh Xil (COCOX- ILI), Qinghai Sanjiangyuan, Chang Tang, Lin-chou Pengbo, and La-lu, and Hoh xil nature reserve is the important breeding sites of Tibetan Antelope (Pantholops hodgsoni). In order to clearly the habitat use and habitat selection of the Tibetan Antelope was divided in the north and south by the QTR railway, we planned the capture of ten Tibetan Antelopes and attach a satellite-based ARGOS system platform transmitter terminal (PTT) to the Tibetan Antelopes. And we succeeded in the capture of two Tibetan Antelopes for the first time in the world in 2007a summer and attached an ARGOS PTT. In this study, we estimate RASTER model of habitat change, using satellite-based ARGOS PTT tracking analyst data and satellite (Terra/MODIS, Terra/ASTER, ALOS and SPOT/vegetation instrument data) land cover change data, order to clearly the spatial and temporal characteristics of wide area habitat selection of Tibetan Antelope.

  8. Solar Features

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Collection includes a variety of solar feature datasets contributed by a number of national and private solar observatories located worldwide.

  9. Feature Extraction

    CERN Document Server

    CERN. Geneva

    2015-01-01

    Feature selection and reduction are key to robust multivariate analyses. In this talk I will focus on pros and cons of various variable selection methods and focus on those that are most relevant in the context of HEP.

  10. Generalized DSS shell for developing simulation and optimization hydro-economic models of complex water resources systems

    Science.gov (United States)

    Pulido-Velazquez, Manuel; Lopez-Nicolas, Antonio; Harou, Julien J.; Andreu, Joaquin

    2013-04-01

    Hydrologic-economic models allow integrated analysis of water supply, demand and infrastructure management at the river basin scale. These models simultaneously analyze engineering, hydrology and economic aspects of water resources management. Two new tools have been designed to develop models within this approach: a simulation tool (SIM_GAMS), for models in which water is allocated each month based on supply priorities to competing uses and system operating rules, and an optimization tool (OPT_GAMS), in which water resources are allocated optimally following economic criteria. The characterization of the water resource network system requires a connectivity matrix representing the topology of the elements, generated using HydroPlatform. HydroPlatform, an open-source software platform for network (node-link) models, allows to store, display and export all information needed to characterize the system. Two generic non-linear models have been programmed in GAMS to use the inputs from HydroPlatform in simulation and optimization models. The simulation model allocates water resources on a monthly basis, according to different targets (demands, storage, environmental flows, hydropower production, etc.), priorities and other system operating rules (such as reservoir operating rules). The optimization model's objective function is designed so that the system meets operational targets (ranked according to priorities) each month while following system operating rules. This function is analogous to the one used in the simulation module of the DSS AQUATOOL. Each element of the system has its own contribution to the objective function through unit cost coefficients that preserve the relative priority rank and the system operating rules. The model incorporates groundwater and stream-aquifer interaction (allowing conjunctive use simulation) with a wide range of modeling options, from lumped and analytical approaches to parameter-distributed models (eigenvalue approach). Such

  11. The ESPAT tool: a general-purpose DSS shell for solving stochastic optimization problems in complex river-aquifer systems

    Science.gov (United States)

    Macian-Sorribes, Hector; Pulido-Velazquez, Manuel; Tilmant, Amaury

    2015-04-01

    Stochastic programming methods are better suited to deal with the inherent uncertainty of inflow time series in water resource management. However, one of the most important hurdles in their use in practical implementations is the lack of generalized Decision Support System (DSS) shells, usually based on a deterministic approach. The purpose of this contribution is to present a general-purpose DSS shell, named Explicit Stochastic Programming Advanced Tool (ESPAT), able to build and solve stochastic programming problems for most water resource systems. It implements a hydro-economic approach, optimizing the total system benefits as the sum of the benefits obtained by each user. It has been coded using GAMS, and implements a Microsoft Excel interface with a GAMS-Excel link that allows the user to introduce the required data and recover the results. Therefore, no GAMS skills are required to run the program. The tool is divided into four modules according to its capabilities: 1) the ESPATR module, which performs stochastic optimization procedures in surface water systems using a Stochastic Dual Dynamic Programming (SDDP) approach; 2) the ESPAT_RA module, which optimizes coupled surface-groundwater systems using a modified SDDP approach; 3) the ESPAT_SDP module, capable of performing stochastic optimization procedures in small-size surface systems using a standard SDP approach; and 4) the ESPAT_DET module, which implements a deterministic programming procedure using non-linear programming, able to solve deterministic optimization problems in complex surface-groundwater river basins. The case study of the Mijares river basin (Spain) is used to illustrate the method. It consists in two reservoirs in series, one aquifer and four agricultural demand sites currently managed using historical (XIV century) rights, which give priority to the most traditional irrigation district over the XX century agricultural developments. Its size makes it possible to use either the SDP or

  12. Blueberry husks and probiotics attenuate colorectal inflammation and oncogenesis, and liver injuries in rats exposed to cycling DSS-treatment.

    Directory of Open Access Journals (Sweden)

    Asa Håkansson

    Full Text Available Long-term colonic inflammation promotes carcinogenesis and histological abnormalities of the liver, and colorectal tumours frequently arise in a background of dysplasia, a precursor of adenomas. Altered colonic microbiota with an increased proportion of bacteria with pro-inflammatory characteristics, have been implicated in neoplastic progression. The composition of the microbiota can be modified by dietary components such as probiotics, polyphenols and dietary fibres. In the present study, the influence of probiotics in combination with blueberry husks on colorectal carcinogenesis and subsequent liver damage was evaluated.Colorectal tumours were induced in rats by cyclic treatment with dextran sulphate sodium (DSS. Blueberry husks and a mixture of three probiotic strains (Bifidobacterium infantis DSM 15159, Lactobacillus gasseri, DSM 16737 and Lactobacillus plantarum DSM 15313 supplemented a basic diet fortified with oats. The condition of the rats was monitored using a disease activity index (DAI. A qualitative and quantitative histological judgement was performed on segments of distal colon and rectum and the caudate lobe of the liver. The formation of short-chain fatty acids, bacterial translocation, the inflammatory reaction and viable count of lactobacilli and Enterobaceriaceae were addressed.Blueberry husks with or without probiotics significantly decreased DAI, and significantly reduced the number of colonic ulcers and dysplastic lesions. With a decreased proportion of blueberry husk in the diet, the probiotic supplement was needed to achieve a significant decrease in numbers of dysplastic lesions. Probiotics decreased faecal viable count of Enterobacteriaceae and increased that of lactobacilli. Blueberry husks with or without probiotics lowered the proportion of butyric acid in distal colon, and decreased the haptoglobin levels. Probiotics mitigated hepatic injuries by decreasing parenchymal infiltration and the incidence of stasis and

  13. Revision of deposition and weathering parameters for the ingestion dose module (ECOSYS) of the ARGOS and RODOS decision support systems

    International Nuclear Information System (INIS)

    The ECOSYS model is the ingestion dose model integrated in the ARGOS and RODOS decision support systems for nuclear emergency management. The parameters used in this model have however not been updated in recent years, where the level of knowledge on various environmental processes has increased considerably. A Nordic work group has carried out a series of evaluations of the general validity of current ECOSYS default parameters. This paper specifically discusses the parameter revisions required with respect to the modelling of deposition and natural weathering of contaminants on agricultural crops, to enable the trustworthy prognostic modelling that is essential to ensure justification and optimisation of countermeasure strategies. New modelling approaches are outlined, since it was found that current ECOSYS approaches for deposition and natural weathering could lead to large prognostic errors. - Highlights: → We examined concepts and parameters in the ECOSYS ingestion dose model. → Natural weathering and deposition processes were studied. → A series of revisions were recommended to users. → Order-of-magnitude errors can be avoided by using the new values.

  14. Quality Controlled Argo Profiling Float Oxygen Data: Open Source Sharing and Version Control Using IPython Notebooks on GitHub

    Science.gov (United States)

    Sakamoto, C.; McCann, M. P.; Plant, J. N.; Johnson, K. S.

    2015-12-01

    Profiling floats equipped with biogeochemical sensors are an ideal platform for observing the seasonal evolution of physical and chemical processes from the surface to the deep interior. As of August 2015, there have reportedly been 765 floats equipped with oxygen sensors with 363 currently active. Although new insights into oceanic biogeochemical processes have come from these data, the profiling oxygen data set has not been fully utilized because the dissolved oxygen data does not undergo QC procedures at the Argo data centers. The oxygen sensors on profiling floats have been demonstrated to produce highly stable and precise data over many months and years but only a small percentage have been verified with discrete samples taken at deployment to determine the sensor accuracy. Takeshita et al (2013) presented a climatology based quality control procedure utilizing the World Ocean Atlas 2009 (WOA09). We used a straightforward approach mentioned in their paper to calculate the sensor gain by comparing the surface %Sat(float) to the surface %Sat(WOA09) using > 1 year of data. We have developed Python scripts to provide QC'd data that are freely available and easily shared using IPython Notebooks hosted on GitHub. We will examine the consistency of the corrected oxygen data set, relative to existing climatologies, and its use in oceanographic studies.

  15. Exclusive Muon-Neutrino Charged Current Muon Plus Any Number of Protons Topologies In ArgoNeuT

    Energy Technology Data Exchange (ETDEWEB)

    Partyka, Kinga Anna [Yale Univ., New Haven, CT (United States)

    2013-01-01

    Neutrinos remain among the least understood fundamental particles even after decades of study. As we enter the precision era o f neutrino measurements bigger and more sophisticated detectors have emerged. The leading candidate among them is a Liquid Argon Time Projection Chamber (LArTPC ) detector technology due to its bubble-like chamber imaging, superb background rejection and scalability. I t is a perfect candidate that w ill aim to answer the remaining questions of the nature o f neutrino and perhaps our existence. Studying neutrinos with a detector that employs detection via beautiful images o f neutrino interactions can be both illuminating and surprising. The analysis presented here takes the full advantage of the LArTPC power by exploiting the first topological analysis of charged current muon neutrino p + N p , muon and any number of protons, interactions with the ArgoNeuT LArTPC experiment on an argon target. The results presented here are the first that address the proton multiplicity at the vertex and the proton kinematics. This study also addresses the importance o f nuclear effects in neutrino interactions. Furthermore, the developed here reconstruction techniques present a significant step forward for this technology and can be employed in the future LArTPC detectors.

  16. Exclusive Muon-Neutrino Charged Current muon plus any number of protons topologies in ArgoNeuT

    Science.gov (United States)

    Partyka, Kinga Anna

    Neutrinos remain among the least understood fundamental particles even after decades of study. As we enter the precision era of neutrino measurements bigger and more sophisticated detectors have emerged. The leading candidate among them is a Liquid Argon Time Projection Chamber (LArTPC) detector technology due to its bubble-like chamber imaging, superb background rejection and scalability. It is a perfect candidate that will aim to answer the remaining questions of the nature of neutrino and perhaps our existence. Studying neutrinos with a detector that employs detection via beautiful images of neutrino interactions can be bath illuminating and surprising. The analysis presented here takes the full advantage of the LArTPC power by exploiting the first topological analysis of charged current muon neutrino mu + Np, muon and any number of protons, interactions with the ArgoNeuT LArTPC experiment on an argon target. The results presented here are the first that address the proton multiplicity at the vertex and the proton kinematics. This study also addresses the importance of nuclear effects in neutrino interactions. Furthermore, the developed here reconstruction techniques present a significant step forward for this technology and can be employed in the future LArTPC detectors.

  17. The Dog on the Ship: The "Canis Major Dwarf Galaxy" as an Outlying Part of the Argo Star System

    CERN Document Server

    Rocha-Pinto, H J; Skrutskie, M F; Patterson, R J; Rocha-Pinto, Helio J.; Majewski, Steven R.; Skrutskie, Michael F.; Patterson, Richard J.

    2006-01-01

    Overdensities in the distribution of low latitude, 2MASS giant stars are revealed by systematically peeling away from sky maps the bulk of the giant stars conforming to ``isotropic'' density laws (generally accounting for known Milky Way components). This procedure, combined with a higher resolution treatment of the sky density of both giants and dust allows us to probe to lower Galactic latitudes than previous 2MASS giant star studies. While the results show the swath of excess giants previously associated with the Monoceros ring system in the second and third Galactic quadrants at distances of 6-20 kpc, we also find a several times larger overdensity of giants in the same distance range concentrated in the direction of the ancient constellation Argo. Isodensity contours of the large structure suggest that it is highly elongated and inclined by about 3 deg to the disk, although details of the structure -- including the actual location of highest density, overall extent, true shape -- and its origin, remain u...

  18. The Argo Simulation: I. Quenching of Massive Galaxies at High Redshift as a Result of Cosmological Starvation

    CERN Document Server

    Feldmann, Robert

    2014-01-01

    Observations show a prevalence of high redshift galaxies with large stellar masses and predominantly passive stellar populations. A variety of processes have been suggested that could reduce the star formation in such galaxies to observed levels, including quasar mode feedback, virial shock heating, or galactic winds driven by stellar feedback. However, the main quenching mechanisms have yet to be identified. Here we study the origin of star formation quenching using Argo, a cosmological zoom-in simulation that follows the evolution of a massive galaxy at $z\\geq{}2$. This simulation adopts the same sub-grid recipes of the Eris simulations, which have been shown to form realistic disk galaxies, and, in one version, adopts also a mass and spatial resolution identical to Eris. The resulting galaxy has properties consistent with those of observed, massive (M_* ~ 1e11 M_sun) galaxies at z~2 and with abundance matching predictions. Our models do not include AGN feedback indicating that supermassive black holes like...

  19. IL-21/IL-21R signaling suppresses intestinal inflammation induced by DSS through regulation of Th responses in lamina propria in mice.

    Science.gov (United States)

    Wang, Yuanyuan; Jiang, Xuefeng; Zhu, Junfeng; Dan Yue; Zhang, Xiaoqing; Wang, Xiao; You, Yong; Wang, Biao; Xu, Ying; Lu, Changlong; Sun, Xun; Yoshikai, Yasunobu

    2016-01-01

    Serum level of IL-21 is increased in patients with inflammatory bowel diseases (IBD), suggesting that IL-21/IL-21 receptor (IL-21R) signaling may be involved in the pathogenesis of IBD. However, the role of IL-21/IL-21 receptor signaling plays in the pathogenesis of IBD is not very clear. In this study, using IL-21R.KO mice, we tested the role of IL-21/IL-21R signaling in the regulation of T helper cell responses during intestinal inflammation. Here we found that IL-21R.KO mice were more susceptible to DSS-induced colitis as compared with C57BL/6 mice. The spontaneous inflammatory cytokines released by macrophages in LP of colon were significantly increased, and Th2, Th17 and Treg responses were down-regulated markedly. However, Th1 responses were significantly up-regulated in IL-21R.KO mice. Meanwhile, the population of CD8(+)CD44(+)IFN-γ(+) T cells was markedly elevated in LP of inflammatory intestine of IL-21RKO mice. In vivo, after disease onset, DSS-induced intestinal inflammation was ameliorated in C57BL/6 mice treated with rIL-21. Our results demonstrate that IL-21/IL-21R signaling contributes to protection against DSS-induced acute colitis through suppression of Th1 and activation of Th2, Th17 and Treg responses in mice. Therefore, therapeutic manipulation of IL-21/IL-21R activity may allow improved immunotherapy for IBD and other inflammatory diseases associated with Th cell responses. PMID:27545302

  20. LIPID-LOWERING THERAPY IN OUTPATIENT PRACTICE (ACCORDING TO THE ARGO-2 STUDY)

    OpenAIRE

    N. M. Akhmedzhanov; D. V. Nebieridze; A. S. Safaryan; V. A. Vygodin; A. Yu. Shuraev; A. N. Tkacheva; A. S. Lishuta

    2016-01-01

    Aim. To study the features of lipid-lowering therapy with rosuvastatin in high and very high cardiovascular risk patients in real outpatient practice.Material and methods. Patients ≥30 years, visited internists or cardiologists of district outpatient clinics in the period from October 2013 to July 2014 were included into the study. Each patient fill in questionnaire. Determination of total cholesterol (TC) level was performed without special preparation of the patient using a portable photome...

  1. Effects of natural raw meal (NRM) on high-fat diet and dextran sulfate sodium (DSS)-induced ulcerative colitis in C57BL/6J mice

    OpenAIRE

    Shin, Sung-Ho; Song, Jia-Le; Park, Myoung-Gyu; Park, Mi-Hyun; Hwang, Sung-Joo; Park, Kun-Young

    2015-01-01

    BACKGROUND/OBJECTIVES Colitis is a serious health problem, and chronic obesity is associated with the progression of colitis. The aim of this study was to determine the effects of natural raw meal (NRM) on high-fat diet (HFD, 45%) and dextran sulfate sodium (DSS, 2% w/v)-induced colitis in C57BL/6J mice. MATERIALS/METHODS Body weight, colon length, and colon weight-to-length ratio, were measured directly. Serum levels of obesity-related biomarkers, triglyceride (TG), total cholesterol (TC), l...

  2. Promoting effect of Ru on Ni/Mg(Al)O catalysts in DSS-like operation of CH4 steam reforming

    OpenAIRE

    Miyata, Takeshi; Shiraga, Masato; Li, Dalin; Atake, Ikuo; Shishido, Tetsuya; Oumi, Yasunori; Sano, Tsuneji; Takehira, Katsuomi

    2007-01-01

    Effects of Ru addition on the activity and the sustainability of Ni/Mg(Al)O catalysts were investigated in the daily start-up and shut-down (DSS) operation of the steam reforming of CH4. Mg2.5(Ni0.5)-Al hydrotalcite was prepared by coprecipitation and calcined to form Mg2.5(Al,Ni0.5)O periclase. When the powders of the periclase were dipped in an aqueous solution of Ru(III) nitrate, the hydrotaclite was reconstituted on the surface of Mg2.5(Al,Ni0.5)O particles, resulting in the formation of ...

  3. Computer Based ex-ante Evaluation of the Planned Railway Line between Copenhagen and Ringsted by use of a Decision Support System named COSIMA-DSS

    DEFF Research Database (Denmark)

    Salling, Kim Bang; Landex, Alex

    This paper presents an appraisal study concerning the extension of the main railway line between Copenhagen and Ringsted by use of a software system named COSIMA-DSS. The modelling system is based upon a multi-methodological approach combining a cost-benefit analysis together with a multi-criteria...... analysis. One of the key impacts in cost-benefit analyses is the time benefit which depends on the timetabling. The paper describes some of the challenges related to the calculation of the time benefits and how the time benefits can be implemented in the decision support system. At the end of the paper...

  4. Detection of anisotropies in the arrival directions of 600 GeV-10TeV cosmic rays with the ARGO-YBJ experiment

    International Nuclear Information System (INIS)

    ARGO-YBJ is an RPC 'carpet' aimed to the detection of extensive air showers induced by charged cosmic rays and gamma-rays in the energy range GeV-PeV. The data-set collected since November 2007 has been analyzed and very significant anisotropies (more than 10 standard deviations), with relative intensity of the order of 10-3 have been found. The observation is not explained with the current models of galactic magnetic field and propagation of cosmic rays in the Galaxy.

  5. Towards closure of regional heat budgets in the North Atlantic using Argo floats and surface flux datasets

    Directory of Open Access Journals (Sweden)

    N. C. Wells

    2009-01-01

    Full Text Available The upper ocean heat budget (0–300 m of the North Atlantic from 20°–60° N is investigated using data from Argo profiling floats for 1999–2005 and the NCEP/NCAR and NOC surface flux datasets. Estimates of the different terms in the budget (heat storage, advection, diffusion and surface exchange are obtained using the methodology developed by Hadfield et al. (2007. The method includes optimal interpolation of the individual profiles to produce gridded fields with error estimates at a 10×10 degree grid box resolution. Closure of the heat budget is obtained within the error estimates for some regions – particularly the eastern subtropical Atlantic – but not for those boxes that include the Gulf Stream. Over the whole range considered, closure is obtained for 13 (9 out of 20 boxes with the NOC (NCEP/NCAR surface fluxes. The seasonal heat budget at 20°–30° N, 35°–25° W is considered in detail. Here, the NCEP based budget has an annual mean residual of -55±35 W m-2 compared with a NOC based value of -4±35 W m-2. For this box, the net heat divergence of 36 W m-2 (Ekman=-4 W m-2, geostrophic=11 W m-2, diffusion=29 W m-2 offsets the net heating of 32 W m-2 from the NOC surface heat fluxes. The results in this box are consistent with an earlier evaluation of the fluxes using measurements from research buoys in the subduction array which revealed biases in NCEP but good agreement of the buoy values with the NOC fields.

  6. Towards closure of regional heat budgets in the North Atlantic using Argo floats and surface flux datasets

    Directory of Open Access Journals (Sweden)

    N. C. Wells

    2009-04-01

    Full Text Available The upper ocean heat budget (0–300 m of the North Atlantic from 20°–60° N is investigated using data from Argo profiling floats for 1999–2005 and the NCEP/NCAR and NOC surface flux datasets. Estimates of the different terms in the budget (heat storage, advection, diffusion and surface exchange are obtained using the methodology developed by Hadfield et al. (2007a, b. The method includes optimal interpolation of the individual profiles to produce gridded fields with error estimates at a 10°×10° grid box resolution. Closure of the heat budget is obtained within the error estimates for some regions – particularly the eastern subtropical Atlantic – but not for those boxes that include the Gulf Stream. Over the whole range considered, closure is obtained for 13 (9 out of 20 boxes with the NOC (NCEP/NCAR surface fluxes. The seasonal heat budget at 20–30° N, 35–25° W is considered in detail. Here, the NCEP based budget has an annual mean residual of −55±35 Wm−2 compared with a NOC based value of −4±35 Wm−2. For this box, the net heat divergence of 36 Wm−2 (Ekman=−4 Wm−2, geostrophic=11 Wm−2, diffusion=29 Wm−2 offsets the net heating of 32 Wm−2 from the NOC surface heat fluxes. The results in this box are consistent with an earlier evaluation of the fluxes using measurements from research buoys in the subduction array which revealed biases in NCEP but good agreement of the buoy values with the NOC fields.

  7. Lactobacillus curvatus WiKim38 isolated from kimchi induces IL-10 production in dendritic cells and alleviates DSS-induced colitis in mice.

    Science.gov (United States)

    Jo, Sung-Gang; Noh, Eui-Jeong; Lee, Jun-Young; Kim, Green; Choi, Joo-Hee; Lee, Mo-Eun; Song, Jung-Hee; Chang, Ji-Yoon; Park, Jong-Hwan

    2016-07-01

    Probiotics such as lactobacilli and bifidobacteria have healthpromoting effects by immune modulation. In the present study, we examined the immunomodulatory properties of Lactobacillus curvatus WiKim38, which was newly isolated from baechu (Chinese cabbage) kimchi. The ability of L. curvatus WiKim38 to induce cytokine production in bone marrow-derived dendritic cells (BMDCs) was determined by enzyme-linked immunosorbent assay. To evaluate the molecular mechanisms underlying L. curvatus Wikim38-mediated IL-10 production, Western blot analyses and inhibitor assays were performed. Moreover, the in vivo anti-inflammatory effects of L. curvatus WiKim38 were examined in a dextran sodium sulfate (DSS)-induced colitis mouse model. L. curvatus WiKim38 induced significantly higher levels of IL-10 in BMDCs compared with that induced by LPS. NF-κB and ERK were activated by L. curvatus WiKim38, and an inhibitor assay revealed that these pathways were required for L. curvatus WiKim38-induced production of IL-10 in BMDCs. An in vivo experiment showed that oral administration of L. curvatus WiKim38 increased the survival rate of mice with DSS-induced colitis and improved clinical signs and histopathological severity in colon tissues. Taken together, these results indicate that L. curvatus Wikim38 may have health-promoting effects via immune modulation, and may thus be applicable for therapy of various inflammatory diseases. PMID:27350616

  8. In-Depth Analysis of Exoproteomes from Marine Bacteria by Shotgun Liquid Chromatography-Tandem Mass Spectrometry: the Ruegeria pomeroyi DSS-3 Case-Study

    Directory of Open Access Journals (Sweden)

    Jean Armengaud

    2010-07-01

    Full Text Available Microorganisms secrete into their extracellular environment numerous compounds that are required for their survival. Many of these compounds could be of great interest for biotechnology applications and their genes used in synthetic biology design. The secreted proteins and the components of the translocation systems themselves can be scrutinized in-depth by the most recent proteomic tools. While the secretomes of pathogens are well-documented, those of non-pathogens remain largely to be established. Here, we present the analysis of the exoproteome from the marine bacterium Ruegeria pomeroyi DSS-3 grown in standard laboratory conditions. We used a shotgun approach consisting of trypsin digestion of the exoproteome, and identification of the resulting peptides by liquid chromatography coupled to tandem mass spectrometry. Three different proteins that have domains homologous to those observed in RTX toxins were uncovered and were semi-quantified as the most abundantly secreted proteins. One of these proteins clearly stands out from the catalogue, representing over half of the total exoproteome. We also listed many soluble proteins related to ABC and TRAP transporters implied in the uptake of nutrients. The Ruegeria pomeroyi DSS-3 case-study illustrates the power of the shotgun nano-LC-MS/MS strategy to decipher the exoproteome from marine bacteria and to contribute to environmental proteomics.

  9. Featuring animacy

    Directory of Open Access Journals (Sweden)

    Elizabeth Ritter

    2015-01-01

    Full Text Available Algonquian languages are famous for their animacy-based grammatical properties—an animacy based noun classification system and direct/inverse system which gives rise to animacy hierarchy effects in the determination of verb agreement. In this paper I provide new evidence for the proposal that the distinctive properties of these languages is due to the use of participant-based features, rather than spatio-temporal ones, for both nominal and verbal functional categories (Ritter & Wiltschko 2009, 2014. Building on Wiltschko (2012, I develop a formal treatment of the Blackfoot aspectual system that assumes a category Inner Aspect (cf. MacDonald 2008, Travis 1991, 2010. Focusing on lexical aspect in Blackfoot, I demonstrate that the classification of both nouns (Seinsarten and verbs (Aktionsarten is based on animacy, rather than boundedness, resulting in a strikingly different aspectual system for both categories. 

  10. Featuring animacy

    Directory of Open Access Journals (Sweden)

    Elizabeth Ritter

    2015-01-01

    Full Text Available Algonquian languages are famous for their animacy-based grammatical properties—an animacy based noun classification system and direct/inverse system which gives rise to animacy hierarchy effects in the determination of verb agreement. In this paper I provide new evidence for the proposal that the distinctive properties of these languages is due to the use of participant-based features, rather than spatio-temporal ones, for both nominal and verbal functional categories (Ritter & Wiltschko 2009, 2014. Building on Wiltschko (2012, I develop a formal treatment of the Blackfoot aspectual system that assumes a category Inner Aspect (cf. MacDonald 2008, Travis 1991, 2010. Focusing on lexical aspect in Blackfoot, I demonstrate that the classification of both nouns (Seinsarten and verbs (Aktionsarten is based on animacy, rather than boundedness, resulting in a strikingly different aspectual system for both categories.

  11. Detailed temperature-salinity distribution in the Northeast Atlantic from ship and Argo vertical casts

    Science.gov (United States)

    Bashmachnikov, I.; Neves, F.; Nascimento, A.; Medeiros, J.; Ambar, I.; Dias, J.; Carton, X.

    2014-06-01

    The present study defines new interpolation functions for hydrological data. These functions are applied to generate climatological maps of temperature-salinity distribution with 25 m depth interval and 30 km space interval (MEDTRANS data-set). The data underwent a rigorous data quality control, having passed several filtering procedures. The gridding was done on neutral density surfaces, which allows better representation of the relative intensity of thermohaline fronts for the same gridding radius. The gridding was done using multi-pass Barnes' Optimum Interpolation procedure with spatially variable size of the gridding window. The shape of the window accounted for topographic influence: the dominant along-slope direction of water mass transport. One of the new features was the use of a local ratio of topographic to planetary β-effects to define the shape of the window as a function of the relative importance of the topographic influence. The N/f ratio was used for simulation of the baroclinic decrease of the topographic influence on water mass transport with the distance from the bottom. The gridded fields are available at the web-site of the Center of Oceanography of the University of Lisbon (http://co.fc.ul.pt/en/data). The new MEDTRANS climatology gives more details to the distribution of water characteristics in the Subtropical Northeast Atlantic, in particular near the Iberian Peninsula. The geostrophic currents relative to the 1900 m reference level demonstrate the local circulation features, in good correspondence to the theory and to previous studies: the acceleration in the meanders of the Azores current; the cyclonic gyre in the Gulf of Cadiz; the splitting and separation of the Mediterranean Water outflow from the continental slope near the Gorringe and the Galicia banks. Those features are not reproduced by the alternative climatologies. Seasonal climatologies, computed for the warm (May-October) and cold (November-April) seasons, revealed stronger

  12. Sensitivity study of (10,100) GeV gamma-ray bursts with double shower front events from ARGO-YBJ

    Science.gov (United States)

    Zhou, Xun-Xiu; Gao, Lan-Lan; Zhang, Yu; Guo, Yi-Qing; Zhu, Qing-Qi; Jia, Huan-Yu; Huang, Dai-Hui

    2016-07-01

    ARGO-YBJ, located at the Yangbajing Cosmic Ray Observatory (4300 m a.s.l., Tibet, China), is a full coverage air shower array, with an energy threshold of ∼300 GeV for gamma-ray astronomy. Most of the recorded events are single front showers, satisfying the trigger requirement of at least 20 particles detected in a given time window. However, in ∼11.5% of the events, two randomly arriving showers may be recorded in the same time window, and the second one, generally smaller, does not need to satisfy the trigger condition. These events are called double shower front events. By using these small showers, well under the trigger threshold, the detector primary energy threshold can be lowered to a few tens of GeV. In this paper, the angular resolution that can be achieved with these events is evaluated by a full Monte Carlo simulation. The ARGO-YBJ sensitivity in detecting gamma-ray bursts (GRBs) by using double shower front events is also studied for various cutoff energies, time durations, and zenith angles of GRBs in ARGO’s field of view. Supported by National Natural Science Foundation of China (11475141) and Fundamental Research Funds for Central Universities (2682014CX091)

  13. Simulation study on double front shower events and sensitivity of (10,100) GeV gamma-ray bursts from ARGO-YBJ

    CERN Document Server

    Zhou, Xunxiu; Zhang, Yu; Guo, Yiqing; Zhu, Qingqi; Jia, Huanyu; Huang, Daihui

    2015-01-01

    ARGO-YBJ, located at the YangBaJing Cosmic Ray Observatory (4300 m a.s.l., Tibet, China), is a full coverage air shower array, with an energy threshold of 300 GeV for gamma-ray astronomy. Most of the recorded events are single front showers, satisfying the trigger requirement of at least 20 particles detected in a given time window. However, in 13% of the events, two randomly arriving showers may be recorded in the same time window, and the second one, in generally smaller, does not need to satisfy the trigger condition. These events are called double front shower events. By using these small showers, well under the trigger threshold, the detector primary energy threshold can be lowered to a few tens of GeV. In this paper, the angular resolution that can be achieved with these events is evaluated by a full Monte Carlo simulation. The ARGO-YBJ sensitivity in detecting gamma-ray bursts (GRBs) by using double front shower events is also studied for various cutoff energies, time durations, and zenith angles of GR...

  14. 4.5 years multi-wavelength observations of Mrk 421 during the ARGO-YBJ and Fermi common operation time

    CERN Document Server

    Bartoli, B; Bi, X J; Cao, Z; Catalanotti, S; Chen, S Z; Chen, T L; Cui, S W; Dai, B Z; Damone, A; Danzengluobu,; De Mitri, I; Piazzoli, B D Ettorre; Di Girolamo, T; Di Sciascio, G; Feng, C F; Feng, Zhaoyang; Feng, Zhenyong; Gou, Q B; Guo, Y Q; He, H H; Hu, Haibing; Hu, Hongbo; Iacovacci, M; Iuppa, R; Jia, H Y; Labaciren,; Li, H J; Liu, C; Liu, J; Liu, M Y; Lu, H; Ma, L L; Ma, X H; Mancarella, G; Mari, S M; Marsella, G; Mastroianni, S; Montini, P; Ning, C C; Perrone, L; Pistilli, P; Salvini, P; Santonico, R; Shen, P R; Sheng, X D; Shi, F; Surdo, A; Tan, Y H; Vallania, P; Vernetto, S; Vigorito, C; Wang, H; Wu, C Y; Wu, H R; Xue, L; Yang, Q Y; Yang, X C; Yao, Z G; Yuan, A F; Zha, M; Zhang, H M; Zhang, L; Zhang, X Y; Zhang, Y; Zhao, J; Zhaxiciren,; Zhaxisangzhu,; Zhou, X X; Zhu, F R; Zhu, Q Q

    2016-01-01

    We report on the extensive multi-wavelength observations of the blazar Markarian 421 (Mrk 421) covering radio to gamma-rays, during the 4.5 year period of ARGO-YBJ and Fermi common operation time, from August 2008 to February 2013. In particular, thanks to the ARGO-YBJ and Fermi data, the whole energy range from 100 MeV to 10 TeV is covered without any gap. In the observation period, Mrk 421 showed both low and high activity states at all wavebands. The correlations among flux variations in different wavebands were analyzed. Seven large flares, including five X-ray flares and two GeV gamma-ray flares with variable durations (3-58 days), and one X-ray outburst phase were identified and used to investigate the variation of the spectral energy distribution with respect to a relative quiescent phase. During the outburst phase and the seven flaring episodes, the peak energy in X-rays is observed to increase from sub-keV to few keV. The TeV gamma-ray flux increases up to 0.9-7.2 times the flux of the Crab Nebula. T...

  15. 4.5-year simultaneous multi-wavelength observation of Mrk 421 in the ARGO-YBJ and Fermi overlap era

    CERN Document Server

    Chen, Songzhan

    2015-01-01

    As one of the most active blazars, Mrk421 is an excellent candidate for the study of the physical processes within the jets of AGN. Here we report on the extensive multi-wavelength observations of Mrk 421 over 4.5 years, from 2008 August to 2013 February. This source was simultaneously monitored by several experiments at different wavelengths: ARGO-YBJ in TeV $\\gamma$-rays, $Fermi$-LAT in GeV $\\gamma$-rays, $Swift$-BAT in hard X-rays, $RXTE$-ASM, $MAXI$ and $Swift$-XRT in soft X-rays, $Swift$-UVOT in ultraviolet, and OVRO in radio frequencies. In particular, thanks to the ARGO-YBJ and $Fermi$ data, the whole energy range from 100 MeV to 10 TeV is covered without any gap. According to the observed light curves, ten states (including seven large flares, two quiescent phases and one outburst) were selected. For the first time, the multi-wavelength spectral evolutions of Mrk 421 during different states were systematically analyzed. During the outburst phase and the seven flaring episodes, the peak energy in X-ray...

  16. GL-V9, a new synthetic flavonoid derivative, ameliorates DSS-induced colitis against oxidative stress by up-regulating Trx-1 expression via activation of AMPK/FOXO3a pathway

    OpenAIRE

    Zhao, Yue; Sun, Yang; Ding, Youxiang; Wang, Xiaoping; Zhou, Yuxin; Li, Wenjun; Huang, Shaoliang; Li, Zhiyu; Kong, Lingyi; Guo, Qinglong; Lu, Na (Luna)

    2015-01-01

    GL-V9, a new synthesized flavonoid derivative, has been reported to possess anti-cancer properties in our previous studies. Uncontrolled overproduction of reactive oxygen species (ROS) has been implicated in oxidative damage of inflammatory bowel disease (IBD). In this study, we aimed to investigate the protective effect of GL-V9 against dextran sulfate sodium (DSS)-induced colitis. GL-V9 attenuated DSS-induced body weight loss, colon length shortening and colonic pathological damage. GL-V9 a...

  17. Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice.

    Directory of Open Access Journals (Sweden)

    Tiago Rodrigues-Sousa

    Full Text Available BACKGROUND: Colitis is a common clinical complication in chronic granulomatous disease (CGD, a primary immunodeficiency caused by impaired oxidative burst. Existing experimental data from NADPH-oxidase knockout mice propose contradictory roles for the involvement of reactive oxygen species in colitis chronicity and severity. Since genetically controlled mice with a point-mutation in the Ncf1 gene are susceptible to chronic inflammation and autoimmunity, we tested whether they presented increased predisposition to develop chronic colitis. METHODS: Colitis was induced in Ncf1-mutant and wild-type mice by a 1st 7-days cycle of dextran sulfate sodium (DSS, intercalated by a 7-days resting period followed by a 2nd 7-days DSS-cycle. Cytokines were quantified locally in the colon inflammatory infiltrates and in the serum. Leukocyte infiltration and morphological alterations of the colon mucosa were assessed by immunohistochemistry. RESULTS: Clinical scores demonstrated a more severe colitis in Ncf1-mutant mice than controls, with no recovery during the resting period and a severe chronic colitis after the 2nd cycle, confirmed by histopathology and presence of infiltrating neutrophils, macrophages, plasmocytes and lymphocytes in the colon. Severe colitis was mediated by increased local expression of cytokines (IL-6, IL-10, TNF-α, IFN-γ and IL-17A and phosphorylation of Leucine-rich repeat kinase 2 (LRRK2. Serological cytokine titers of those inflammatory cytokines were more elevated in Ncf1-mutant than control mice, and were accompanied by systemic changes in functional subsets of monocytes, CD4+ T and B cells. CONCLUSION: This suggests that an ineffective oxidative burst leads to severe chronic colitis through local accumulation of peroxynitrites, pro-inflammatory cytokines and lymphocytes and systemic immune deregulation similar to CGD.

  18. Bifidobacterium longum CCM 7952 Promotes Epithelial Barrier Function and Prevents Acute DSS-Induced Colitis in Strictly Strain-Specific Manner.

    Directory of Open Access Journals (Sweden)

    Dagmar Srutkova

    Full Text Available Reduced microbial diversity has been associated with inflammatory bowel disease (IBD and probiotic bacteria have been proposed for its prevention and/or treatment. Nevertheless, comparative studies of strains of the same subspecies for specific health benefits are scarce. Here we compared two Bifidobacterium longum ssp. longum strains for their capacity to prevent experimental colitis.Immunomodulatory properties of nine probiotic bifidobacteria were assessed by stimulation of murine splenocytes. The immune responses to B. longum ssp. longum CCM 7952 (Bl 7952 and CCDM 372 (Bl 372 were further characterized by stimulation of bone marrow-derived dendritic cell, HEK293/TLR2 or HEK293/NOD2 cells. A mouse model of dextran sulphate sodium (DSS-induced colitis was used to compare their beneficial effects in vivo.The nine bifidobacteria exhibited strain-specific abilities to induce cytokine production. Bl 372 induced higher levels of both pro- and anti-inflammatory cytokines in spleen and dendritic cell cultures compared to Bl 7952. Both strains engaged TLR2 and contain ligands for NOD2. In a mouse model of DSS-induced colitis, Bl 7952, but not Bl 372, reduced clinical symptoms and preserved expression of tight junction proteins. Importantly, Bl 7952 improved intestinal barrier function as demonstrated by reduced FITC-dextran levels in serum.We have shown that Bl 7952, but not Bl 372, protected mice from the development of experimental colitis. Our data suggest that although some immunomodulatory properties might be widespread among the genus Bifidobacterium, others may be rare and characteristic only for a specific strain. Therefore, careful selection might be crucial in providing beneficial outcome in clinical trials with probiotics in IBD.

  19. The Cosmic Ray p+He energy spectrum in the 3-3000 TeV energy range measured by ARGO-YBJ

    CERN Document Server

    Mari, S M

    2015-01-01

    The ARGO-YBJ experiment is a full coverage air shower detector operated at the Yangbajing International Cosmic Ray Observatory. The detector has been in stable data taking in its full configuration since November 2007 to February 2013. The high altitude and the high segmentation and spacetime resolution offer the possibility to explore the cosmic ray energy spectrum in a very wide range, from a few TeV up to the PeV region. The high segmentation allows a detailed measurement of the lateral distribution, which can be used in order to discriminate showers produced by light and heavy elements. In this work we present the measurement of the cosmic ray light component spectrum in the energy range 3-3000 TeV. The analysis has been carried out by using a two-dimensional unfolding method based on the Bayes' theorem.

  20. The Cosmic Ray p+He energy spectrum in the 3-3000 TeV energy range measured by ARGO-YBJ

    Science.gov (United States)

    Mari, S. M.; Montini, P.

    2016-07-01

    The ARGO-YBJ experiment is a full coverage air shower detector operated at the Yangbajing International Cosmic Ray Observatory. The detector has been in stable data taking in its full configuration since November 2007 to February 2013. The high altitude and the high segmentation and spacetime resolution offer the possibility to explore the cosmic ray energy spectrum in a very wide range, from a few TeV up to the PeV region. The high segmentation allows a detailed measurement of the lateral distribution, which can be used in order to discriminate showers produced by light and heavy elements. In this work we present the measurement of the cosmic ray light component spectrum in the energy range 3-3000 TeV. The analysis has been carried out by using a two-dimensional unfolding method based on the Bayes' theorem.

  1. ARGOS PHWR 380

    International Nuclear Information System (INIS)

    This paper introduces the design of a nuclear power plant of 380 MWe, equipped with a preassure-vessel heavy-water reactor. An explanation is given of the technical, economical and financial factors that led to the design of this medium sized nuclear power plant, which is compatible with the latest advances in the field of nuclear safety. (Author)

  2. Enneolematu doktorispektaakel / Argo Kerb

    Index Scriptorium Estoniae

    Kerb, Argo

    2011-01-01

    Tallinna Ülikoolis soomlase Tuire Jankko pedagoogikaalase doktoritöö kaitsmise ümber tekkinud skandaalist. Sisaldab lühiintervjuud Tampere ja Tallinna ülikooli õppekavateooria professori Tero Autioga

  3. A Security Solution for the Transmission of Confidential Data and Efficient File Authentication Based on DES, AES, DSS and RSA

    Directory of Open Access Journals (Sweden)

    Rajat Chaudhary,

    2012-08-01

    Full Text Available Data security is an integral part of web basedbusiness applications like insurance, banking etc. Theseapplications require a secure infrastructure to meet the securityrequirements of confidentiality, endpoint authentication, messageintegrity and no repudiation. Document encryption/decryptionand signatures/validation are the data security standards thatdefine XML vocabularies and processing rules to meet thesesecurity requirements.In this paper, we present a how a file securely passes fromsender (server to the receiver (client through a central gatewaywith web services applications which mean a secure architecturefor the exchange of confidential documents. Designing a securedelectronic system architecture i.e. connected to the centralgateway through which the whole work is established and takesplace accordingly to pass only the files over the internet and havesecurity features like digital signatures. Various algorithms,implementations and coding have been developed forencryption/decryption, signatures/validations and web services.

  4. The bending of the proton plus helium flux in primary cosmic rays measured by the ARGO-YBJ experiment in the energy range from 20 TeV to 5 PeV

    CERN Document Server

    Montini, P

    2016-01-01

    The measurement of proton plus helium and all-particle energy spectra in the range $20\\,$ TeV to $5 \\,$PeV and $80 \\,$TeV to $5 \\,$PeV respectively are presented. Data taken by the ARGO-YBJ detector in the 2010 year have been analyzed. The ARGO-YBJ experiment (Tibet, P. R. China) has been taking data for more than five years by means of a full-coverage array of RPC detectors. The discrimination between showers produced by light and heavy primaries has been performed by looking at the lateral particle density close to the core region. A Bayesian unfolding technique was therefore applied to the measured quantities in order to evaluate the cosmic ray energy spectrum. The proton plus helium spectrum clearly shows a bending at about $1 \\,$PeV, while the all-particle spectrum is consistent with previous observations.

  5. Chloroform fraction of Solanum tuberosum L. cv Jayoung epidermis suppresses LPS-induced inflammatory responses in macrophages and DSS-induced colitis in mice.

    Science.gov (United States)

    Lee, Seung-Jun; Shin, Ji-Sun; Choi, Hye-Eun; Lee, Kyoung-Goo; Cho, Young-Wuk; An, Hyo-Jin; Jang, Dae Sik; Jeong, Jin-Cheol; Kwon, Oh-Keun; Nam, Jung-Hwan; Lee, Kyung-Tae

    2014-01-01

    In this study, the authors investigated the molecular mechanism underlying the antiinflammatory effects of the chloroform fraction of the peel of 'Jayoung' (CFPJ), a color-fleshed potato, on lipopolysaccharide (LPS)-induced RAW 264.7 macrophages and in mice with dextran sulfate sodium (DSS)-induced colitis. CFPJ inhibited the expressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) at the transcription level, and attenuated the transcriptional activity of nuclear factor-κB (NF-κB) by reducing the translocation of NF-κB depending on degradation of inhibitory κB-α (IκB-α). Furthermore, CFPJ attenuated the phosphorylations of mitogen-activated protein kinase kinases3/6 (MKK3/6) and of p38. In colitis model, CFPJ significantly reduced the severity of colitis and the productions and protein levels of pro-inflammatory mediators in colonic tissue. These results suggest that the anti-inflammatory effects of CFPJ are associated with the suppression of NF-κB and p38 activation in macrophages, and support its possible therapeutic role for the treatment of colitis. PMID:24184733

  6. A study of biodiversity using DSS method and seed storage protein comparison of populations in two species of Achillea L. in the west of Iran

    Directory of Open Access Journals (Sweden)

    Hajar Salehi

    2013-11-01

    Full Text Available Intarspecific and interspecific variations are the main reserves of biodiversity and both are important sources of speciation. On this basis, identifing and recognizing the intra and interspecific variations is important in order to recognition of biodiversity. This research was done to study biodiversity and electrophoresis comparison of seed storage proteins in the populations of the two species of the genus Achillea in Hamadan and Kurdistan provinces using of the method of determination of special station (DSS. For this purpose, 12 and 9 special stations were selected for the species A. tenuifolia and A. biebresteinii using the data published in the related flora. Seed storage proteins were extracted and then studied using electrophoresis techniques (SDS-PAGE. In survey of all special stations, 120 plant species were distinguished as associated species. The results of the floristic data for the both species determined six distinctive groups that indicated the existence of intraspecific diversity in this species. The result of analysis of ecological data and seed storage proteins for the two species was in accordance with the floristic data and showed six distinctive groups. The existence of the bands of no. 4, 5, 8, 12 and 13 in the special stations of A. tenuifolia and the bands of 14, 15 and 16 in the special stations of A. biebresteinii o separated the populations of the species in two quite different and distinctive groups.

  7. Detection of thermal neutrons with the PRISMA-YBJ array in Extensive Air Showers selected by the ARGO-YBJ experiment

    CERN Document Server

    Bartoli, B; Bi, X J; Cao, Z; Catalanotti, S; Chen, S Z; Chen, T L; Cui, S W; Dai, B Z; D'Amone, A; Danzengluobu,; De Mitri, I; Piazzoli, B D'Ettorre; Di Girolamo, T; Di Sciascio, G; Feng, C F; Feng, Zhaoyang; Feng, Zhenyong; Gou, Q B; Guo, Y Q; He, H H; Hu, Haibing; Hu, Hongbo; Iacovacci, M; Iuppa, R; Jia, H Y; Labaciren,; Li, H J; Liu, C; Liu, J; Liu, M Y; Lu, H; Ma, L L; Ma, X H; Mancarella, G; Mari, S M; Marsella, G; Mastroianni, S; Montini, P; Ning, C C; Perrone, L; Pistilli, P; Salvini, P; Santonico, R; Shen, P R; Sheng, X D; Shi, F; Surdo, A; Tan, Y H; Vallania, P; Vernetto, S; Vigorito, C; Wang, H; Wu, C Y; Wu, H R; Xue, L; Yang, Q Y; Yang, X C; Yao, Z G; Yuan, A F; Zha, M; Zhang, H M; Zhang, L; Zhang, X Y; Zhang, Y; Zhao, J; Zhaxiciren,; Zhaxisangzhu,; Zhou, X X; Zhu, F R; Zhu, Q Q; Stenkin, Yu V; Alekseenko, V V; Aynutdinov, V; Cai, Z Y; Guo, X W; Liu, Y; Rulev, V; Shchegolev, O B; Stepanov, V; Volchenko, V; Zhang, H

    2015-01-01

    We report on a measurement of thermal neutrons, generated by the hadronic component of extensive air showers (EAS), by means of a small array of EN-detectors developed for the PRISMA project (PRImary Spectrum Measurement Array), novel devices based on a compound alloy of ZnS(Ag) and 6LiF. This array has been operated within the ARGO-YBJ experiment at the high altitude Cosmic Ray Observatory in Yangbajing (Tibet, 4300 m a.s.l.). Due to the tight correlation between the air shower hadrons and thermal neutrons, this technique can be envisaged as a simple way to get information on the EAS hadronic component, avoiding the use of huge calorimeters. Coincident events generated by primary cosmic rays of energies greater than 100 TeV have been selected and analyzed. The EN-detectors have been used to record simultaneously thermal neutrons and the air shower electromagnetic component. The density distribution of both components and the total number of thermal neutrons have been measured. The correlation of these data w...

  8. A gridded data set of upper-ocean hydrographic properties in the Weddell Gyre obtained by objective mapping of Argo float measurements

    Science.gov (United States)

    Reeve, K. A.; Boebel, O.; Kanzow, T.; Strass, V.; Rohardt, G.; Fahrbach, E.

    2016-02-01

    The Weddell Gyre plays a crucial role in the modification of climate by advecting heat poleward to the Antarctic ice shelves and by regulating the density of water masses that feed the lowest limb of the global ocean overturning circulation. However, our understanding of Weddell Gyre water mass properties is limited to regions of data availability, primarily along the Prime Meridian. The aim of this paper is to provide a data set of the upper water column properties of the entire Weddell Gyre. Objective mapping was applied to Argo float data in order to produce spatially gridded, time-composite maps of temperature and salinity for fixed pressure levels ranging from 50 to 2000 dbar, as well as temperature, salinity and pressure at the level of the sub-surface temperature maximum. While the data are currently too limited to incorporate time into the gridded structure, the data are extensive enough to produce maps of the entire region across three time-composite periods (2001-2005, 2006-2009 and 2010-2013), which can be used to determine how representative conclusions drawn from data collected along general RV transect lines are on a gyre scale perspective. The work presented here represents the technical prerequisite for addressing climatological research questions in forthcoming studies. The data sets are available in netCDF format at doi:10.1594/PANGAEA.842876.

  9. Knee of the cosmic hydrogen and helium spectrum below 1 PeV measured by ARGO-YBJ and a Cherenkov telescope of LHAASO

    Science.gov (United States)

    Bartoli, B.; Bernardini, P.; Bi, X. J.; Cao, Z.; Catalanotti, S.; Chen, S. Z.; Chen, T. L.; Cui, S. W.; Dai, B. Z.; D'Amone, A.; Danzengluobu; De Mitri, I.; D'Ettorre Piazzoli, B.; Di Girolamo, T.; Di Sciascio, G.; Feng, C. F.; Feng, Zhaoyang; Feng, Zhenyong; Guo, Q. B.; Guo, Y. Q.; He, H. H.; Hu, Haibing; Hu, Hongbo; Iacovacci, M.; Iuppa, R.; Jia, H. Y.; Labaciren; Li, H. J.; Liu, C.; Liu, J.; Liu, M. Y.; Lu, H.; Ma, L. L.; Ma, X. H.; Mancarella, G.; Mari, S. M.; Marsella, G.; Mastroianni, S.; Montini, P.; Ning, C. C.; Perrone, L.; Pistilli, P.; Salvini, P.; Santonico, R.; Shen, P. R.; Sheng, X. D.; Shi, F.; Surdo, A.; Tan, Y. H.; Vallania, P.; Vernetto, S.; Vigorito, C.; Wang, H.; Wu, C. Y.; Wu, H. R.; Xue, L.; Yang, Q. Y.; Yang, X. C.; Yao, Z. G.; Yuan, A. F.; Zha, M.; Zhang, H. M.; Zhang, L.; Zhang, X. Y.; Zhang, Y.; Zhao, J.; Zhaxiciren; Zhaxisangzhu; Zhou, X. X.; Zhu, F. R.; Zhu, Q. Q.; Bai, Y. X.; Chen, M. J.; Feng, S. H.; Gao, B.; Gu, M. H.; Hou, C.; Liu, J.; Liu, J. L.; Wang, X.; Xiao, G.; Zhang, B. K.; Zhang, S. S.; Zhou, B.; Zuo, X.; ARGO-YBJ Collaboration‡

    2015-11-01

    The measurement of the cosmic ray energy spectrum, in particular for individual species of nuclei, is an important tool to investigate cosmic ray production and propagation mechanisms. The determination of the "knees" in the spectra of different species remains one of the main challenges in cosmic ray physics. In fact, experimental results are still conflicting. In this paper we report a measurement of the mixed proton and helium energy spectrum, obtained with the combined data of the ARGO-YBJ experiment and a wide field of view Cherenkov telescope, a prototype of the future LHAASO experiment. By means of a multiparameter technique, we have selected a high-purity proton plus helium sample. The reconstructed energy resolution is found to be about 25% throughout the investigated energy range from 100 TeV to 3 PeV, with a systematic uncertainty in the absolute energy scale of 9.7%. The found energy spectrum can be fitted with a broken power-law function, with a break at the energy Ek =700 ±230 (stat )±70 (sys ) TeV , where the spectral index changes from -2.56 ±0.05 to -3.24 ±0.36 . The statistical significance of the observed spectral break is 4.2 standard deviations.

  10. Unsupervised Feature Subset Selection

    DEFF Research Database (Denmark)

    Søndberg-Madsen, Nicolaj; Thomsen, C.; Pena, Jose

    This paper studies filter and hybrid filter-wrapper feature subset selection for unsupervised learning (data clustering). We constrain the search for the best feature subset by scoring the dependence of every feature on the rest of the features, conjecturing that these scores discriminate some...... irrelevant features. We report experimental results on artificial and real data for unsupervised learning of naive Bayes models. Both the filter and hybrid approaches perform satisfactorily....

  11. Fractal analysis of nuclear histology integrates tumor and stromal features into a single prognostic factor of the oral cancer microenvironment

    International Nuclear Information System (INIS)

    The lack of prognostic biomarkers in oral squamous cell carcinoma (OSCC) has hampered treatment decision making and survival in OSCC remains poor. Histopathological features are used for prognostication in OSCC and, although useful for predicting risk, manual assessment of histopathology is subjective and labour intensive. In this study, we propose a method that integrates multiple histopathological features of the tumor microenvironment into a single, digital pathology-based biomarker using nuclear fractal dimension (nFD) analysis. One hundred and seven consecutive OSCC patients diagnosed between 1998 and 2006 in Calgary, Canada were included in the study. nFD scores were generated from DAPI-stained images of tissue microarray (TMA) cores. Ki67 protein expression was measured in the tumor using fluorescence immunohistochemistry (IHC) and automated quantitative analysis (AQUA®). Lymphocytic infiltration (LI) was measured in the stroma from haematoxylin-eosin (H&E)-stained TMA slides by a pathologist. Twenty-five (23.4%) and 82 (76.6%) patients were classified as high and low nFD, respectively. nFD was significantly associated with pathological tumor-stage (pT-stage; P = 0.01) and radiation treatment (RT; P = 0.01). High nFD of the total tumor microenvironment (stroma plus tumor) was significantly associated with improved disease-specific survival (DSS; P = 0.002). No association with DSS was observed when nFD of either the tumor or the stroma was measured separately. pT-stage (P = 0.01), pathological node status (pN-status; P = 0.02) and RT (P = 0.03) were also significantly associated with DSS. In multivariate analysis, nFD remained significantly associated with DSS [HR 0.12 (95% CI 0.02-0.89, P = 0.04)] in a model adjusted for pT-stage, pN-status and RT. We also found that high nFD was significantly associated with high tumor proliferation (P < 0.0001) and high LI (P < 0.0001), factors that we and others have shown to be associated with improved survival in OSCC

  12. Quasi-static time-series simulation using OpenDSS in IEEE distribution feeder model with high PV penetration and its impact on solar forecasting

    Science.gov (United States)

    Mohammed, Touseef Ahmed Faisal

    Since 2000, renewable electricity installations in the United States (excluding hydropower) have more than tripled. Renewable electricity has grown at a compounded annual average of nearly 14% per year from 2000-2010. Wind, Concentrated Solar Power (CSP) and solar Photo Voltaic (PV) are the fastest growing renewable energy sectors. In 2010 in the U.S., solar PV grew over 71% and CSP grew by 18% from the previous year. Globally renewable electricity installations have more than quadrupled from 2000-2010. Solar PV generation grew by a factor of more than 28 between 2000 and 2010. The amount of CSP and solar PV installations are increasing on the distribution grid. These PV installations transmit electrical current from the load centers to the generating stations. But the transmission and distribution grid have been designed for uni-directional flow of electrical energy from generating stations to load centers. This causes imbalances in voltage and switchgear of the electrical circuitry. With the continuous rise in PV installations, analysis of voltage profile and penetration levels remain an active area of research. Standard distributed photovoltaic (PV) generators represented in simulation studies do not reflect the exact location and variability properties such as distance between interconnection points to substations, voltage regulators, solar irradiance and other environmental factors. Quasi-Static simulations assist in peak load planning hour and day ahead as it gives a time sequence analysis to help in generation allocation. Simulation models can be daily, hourly or yearly depending on duty cycle and dynamics of the system. High penetration of PV into the power grid changes the voltage profile and power flow dynamically in the distribution circuits due to the inherent variability of PV. There are a number of modeling and simulations tools available for the study of such high penetration PV scenarios. This thesis will specifically utilize OpenDSS, a open source

  13. Gaussian Affine Feature Detector

    OpenAIRE

    Xu, Xiaopeng; Zhang, Xiaochun

    2011-01-01

    A new method is proposed to get image features' geometric information. Using Gaussian as an input signal, a theoretical optimal solution to calculate feature's affine shape is proposed. Based on analytic result of a feature model, the method is different from conventional iterative approaches. From the model, feature's parameters such as position, orientation, background luminance, contrast, area and aspect ratio can be extracted. Tested with synthesized and benchmark data, the method achieve...

  14. Comparison of 37 months global net radiation flux derived from PICARD-BOS over the same period observations of CERES and ARGO

    Science.gov (United States)

    Zhu, Ping; Wild, Martin

    2016-04-01

    The absolute level of the global net radiation flux (NRF) is fixed at the level of [0.5-1.0] Wm-2 based on the ocean heat content measurements [1]. The space derived global NRF is at the same order of magnitude than the ocean [2]. Considering the atmosphere has a negligible effects on the global NRF determination, the surface global NRF is consistent with the values determined from space [3]. Instead of studying the absolute level of the global NRF, we focus on the interannual variation of global net radiation flux, which were derived from the PICARD-BOS experiment and its comparison with values over the same period but obtained from the NASA-CERES system and inferred from the ocean heat content survey by ARGO network. [1] Allan, Richard P., Chunlei Liu, Norman G. Loeb, Matthew D. Palmer, Malcolm Roberts, Doug Smith, and Pier-Luigi Vidale (2014), Changes in global net radiative imbalance 1985-2012, Geophysical Research Letters, 41 (no.15), 5588-5597. [2] Loeb, Norman G., John M. Lyman, Gregory C. Johnson, Richard P. Allan, David R. Doelling, Takmeng Wong, Brian J. Soden, and Graeme L. Stephens (2012), Observed changes in top-of-the-atmosphere radiation and upper-ocean heating consistent within uncertainty, Nature Geoscience, 5 (no.2), 110-113. [3] Wild, Martin, Doris Folini, Maria Z. Hakuba, Christoph Schar, Sonia I. Seneviratne, Seiji Kato, David Rutan, Christof Ammann, Eric F. Wood, and Gert Konig-Langlo (2015), the energy balance over land and oceans: an assessment based on direct observations and CMIP5 climate models, Climate Dynamics, 44 (no.11-12), 3393-3429.

  15. Gaussian Affine Feature Detector

    CERN Document Server

    Xu, Xiaopeng

    2011-01-01

    A new method is proposed to get image features' geometric information. Using Gaussian as an input signal, a theoretical optimal solution to calculate feature's affine shape is proposed. Based on analytic result of a feature model, the method is different from conventional iterative approaches. From the model, feature's parameters such as position, orientation, background luminance, contrast, area and aspect ratio can be extracted. Tested with synthesized and benchmark data, the method achieves or outperforms existing approaches in term of accuracy, speed and stability. The method can detect small, long or thin objects precisely, and works well under general conditions, such as for low contrast, blurred or noisy images.

  16. Monotropein isolated from the roots of Morinda officinalis ameliorates proinflammatory mediators in RAW 264.7 macrophages and dextran sulfate sodium (DSS)-induced colitis via NF-κB inactivation.

    Science.gov (United States)

    Shin, Ji-Sun; Yun, Kyung-Jin; Chung, Kyung-Sook; Seo, Kyeong-Hwa; Park, Hee-Juhn; Cho, Young-Wuk; Baek, Nam-In; Jang, Daesik; Lee, Kyung-Tae

    2013-03-01

    We previously demonstrated that monotropein isolated from the roots of Morinda officinalis (Rubiaceae) has anti-inflammatory effects in vivo. In the present study, we investigated the molecular mechanisms underlying the anti-inflammatory effects of monotropein in lipopolysaccharide (LPS)-induced RAW 264.7 macrophages and dextran sulfate sodium (DSS)-induced colitis mouse model. Monotropein was found to inhibit the expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) mRNA in LPS-induced RAW 264.7 macrophages. Treatment with monotropein decreased the DNA binding activity of nuclear factor-κB (NF-κB). Consistent with these findings, monotropein also suppressed phosphorylation and degradation of inhibitory κB-α (IκB-α), and consequently the translocations of NF-κB. In the DSS-induced colitis model, monotropein reduced disease activity index (DAI), myeloperoxidase (MPO) activity, and inflammation-related protein expressions by suppressing NF-κB activation in colon mucosa. Taken together, these findings suggest that the anti-inflammatory effects of monotropein are mainly related to the inhibition of the expressions of inflammatory mediators via NF-κB inactivation, and support its possible therapeutic role in colitis. PMID:23261679

  17. Severity of DSS-induced colitis is reduced in Ido1-deficient mice with down-regulation of TLR-MyD88-NF-kB transcriptional networks.

    Science.gov (United States)

    Shon, Woo-Jeong; Lee, Young-Kwan; Shin, Ji Hee; Choi, Eun Young; Shin, Dong-Mi

    2015-01-01

    Indoleamine 2,3 -dioxygenase 1 (IDO1) catalyzes L-tryptophan to kynurenine in the first and rate-limiting step of tryptophan metabolism. IDO1 is expressed widely throughout the body, with especially high expression in colonic intestinal tissues. To examine the role of IDO1 in the colon, transcriptome analysis was performed in both Ido1(-/-) and Ido1(+/+) mice. Gene set enrichment analysis identified the Inflammatory Response as the most significant category modulated by the absence of IDO1. This observation prompted us to further investigate the function of IDO1 in the development of tissue inflammation. By using DSS-induced experimental colitis mice models, we found that the disease in Ido1(-/-) mice was less severe than in Ido1(+/+) mice. Pharmacological inhibition of IDO1 by L-1MT attenuated the severity of DSS-colitis as well. Transcriptome analyses revealed that pathways involving TLR and NF-kB signaling were significantly down-regulated by the absence of IDO1. Furthermore, dramatic changes in TLR and NF-kB signaling resulted in substantial changes in the expression of many inflammatory cytokines and chemokines. Numbers of inflammatory cells in colon and peripheral blood were reduced in IDO1 deficiency. These findings suggest that IDO1 plays important roles in producing inflammatory responses and modulating transcriptional networks during the development of colitis. PMID:26610689

  18. 台湾东北部黑潮表层水入侵东海陆架的季节变化规律%The seasonal variability of the Kuroshio surface water intru-sion onto the East China Sea continental shelf derived from Argos drifter data

    Institute of Scientific and Technical Information of China (English)

    赵瑞祥; 刘志亮

    2015-01-01

    seasonal feature: the Kuroshio surface water intrusion onto the East China Sea continental shelf is strong in fall and winter, and weak in spring and summer. This paper utilizes the latest Argos drifter data to reveal the seasonal variability of Kuroshio surface water intrusion onto the East China Sea continental shelf.

  19. Improvement of radiological consequence estimation methodologies for NPP accidents in the ARGOS and RODOS decision support systems through consideration of contaminant physico-chemical forms

    International Nuclear Information System (INIS)

    The European standard computerized decision support systems RODOS and ARGOS, which are integrated in the operational nuclear emergency preparedness in practically all European countries, as well as in a range of non-European countries, are highly valuable tools for radiological consequence estimation, e.g., in connection with planning and exercising as well as in justification and optimization of intervention strategies. Differences between the Chernobyl and Fukushima accident atmospheric release source terms have demonstrated that differences in release conditions and processes may lead to very different degrees of volatilization of some radionuclides. Also the physico-chemical properties of radionuclides released can depend strongly on the release process. An example from the Chernobyl accident of the significance of this is that strontium particles released in the fire were oxidized and thus generally physico-chemically different from those released during the preceding explosion. This is reflected in the very different environmental mobility of the two groups of particles. The initial elemental matrix characteristics of the contaminants, as well as environmental parameters like pH, determine for instance the particle dissolution time functions, and thus the environmental mobility and potential for uptake in living organisms. As ICRP recommends optimization of intervention according to residual dose, it is crucial to estimate long term dose contributions adequately. In the EURATOM FP7 project PREPARE, an effort is made to integrate physico-chemical forms of contaminants in scenario-specific source term determination, thereby enabling consideration of influences on atmospheric dispersion/deposition, post-deposition migration, and effectiveness of countermeasure implementation. The first step in this context was to investigate, based on available experience, the important physico-chemical properties of radio-contaminants that might potentially be released to the

  20. New features in MEDM

    International Nuclear Information System (INIS)

    MEDM, which is derived from Motif Editor and Display Manager, is the primary graphical interface to the EPICS control system. This paper describes new features that have been added to MEDM in the last two years. These features include new editing capabilities, a PV Info dialog box, a means of specifying limits and precision, a new implementation of the Cartesian Plot, new features for several objects, new capability for the Related Display, help, a user-configurable Execute Menu, reconfigured start-up options, and availability for Windows 95/98/NT. Over one hundred bugs have been fixed, and the program is quite stable and in extensive use

  1. Fingerprint Feature Extraction Algorithm

    Directory of Open Access Journals (Sweden)

    Mehala. G

    2014-03-01

    Full Text Available The goal of this paper is to design an efficient Fingerprint Feature Extraction (FFE algorithm to extract the fingerprint features for Automatic Fingerprint Identification Systems (AFIS. FFE algorithm, consists of two major subdivisions, Fingerprint image preprocessing, Fingerprint image postprocessing. A few of the challenges presented in an earlier are, consequently addressed, in this paper. The proposed algorithm is able to enhance the fingerprint image and also extracting true minutiae.

  2. Feature Model Differences

    OpenAIRE

    Acher, Mathieu; Heymans, Patrick; Collet, Philippe; Quinton, Clément; Lahire, Philippe; Merle, Philippe

    2012-01-01

    International audience Feature models are a widespread means to represent commonality and variability in software product lines. As is the case for other kinds of models, computing and managing feature model differences is useful in various real-world situations. In this paper, we propose a set of novel differencing techniques that combine syntactic and semantic mechanisms, and automatically produce meaningful differences. Practitioners can exploit our results in various ways: to understan...

  3. Fingerprint Feature Extraction Algorithm

    OpenAIRE

    Mehala. G

    2014-01-01

    The goal of this paper is to design an efficient Fingerprint Feature Extraction (FFE) algorithm to extract the fingerprint features for Automatic Fingerprint Identification Systems (AFIS). FFE algorithm, consists of two major subdivisions, Fingerprint image preprocessing, Fingerprint image postprocessing. A few of the challenges presented in an earlier are, consequently addressed, in this paper. The proposed algorithm is able to enhance the fingerprint image and also extractin...

  4. Random Maxout Features

    OpenAIRE

    Mroueh, Youssef; Rennie, Steven; Goel, Vaibhava

    2015-01-01

    In this paper, we propose and study random maxout features, which are constructed by first projecting the input data onto sets of randomly generated vectors with Gaussian elements, and then outputing the maximum projection value for each set. We show that the resulting random feature map, when used in conjunction with linear models, allows for the locally linear estimation of the function of interest in classification tasks, and for the locally linear embedding of points when used for dimensi...

  5. Feature Engineering for Drug Name Recognition in Biomedical Texts: Feature Conjunction and Feature Selection

    OpenAIRE

    Shengyu Liu; Buzhou Tang; Qingcai Chen; Xiaolong Wang; Xiaoming Fan

    2015-01-01

    Drug name recognition (DNR) is a critical step for drug information extraction. Machine learning-based methods have been widely used for DNR with various types of features such as part-of-speech, word shape, and dictionary feature. Features used in current machine learning-based methods are usually singleton features which may be due to explosive features and a large number of noisy features when singleton features are combined into conjunction features. However, singleton features that can o...

  6. Quorum sensing in the probiotic bacterium Escherichia coli Nissle 1917 (Mutaflor – evidence that furanosyl borate diester (AI-2 is influencing the cytokine expression in the DSS colitis mouse model

    Directory of Open Access Journals (Sweden)

    Jacobi Christoph A

    2012-08-01

    Full Text Available Abstract Background “Quorum sensing” (QS is the phenomenon which allows single bacterial cells to measure the concentration of bacterial signal molecules. Two principle different QS systems are known, the Autoinducer 1 system (AI-1 for the intraspecies communication using different Acyl-homoserine lactones (AHL and AI-2 for the interspecies communication. Aim of this study was to investigate QS of Escherichia coli Nissle 1917 (Mutaflor. Results While E. coli Nissle is producing AI-2 in a density dependent manner, no AI-1 was produced. To study the effect of AI-2 in the DSS (dextran sulphate sodium induced mouse model of acute colitis, we silenced the corresponding gene luxS by intron insertion. The mutant bacterium E. coli Nissle::luxS was equally effective in colonizing the colon and the mutation turned out to be 100% stable during the course of the experiment. Isolating RNA from the colon mucosa and performing semiquantitative RT PCR, we were able to show that the expression of the pro-inflammatory cytokine IFN-y was suppressed in mice being infected with the E. coli Nissle wild type. Mice infected with the E. coli Nissle::luxS mutant showed a suppressed expression of IL-10 compared to uninfected mice, while the expression of the pro-inflammatory cytokines IL-6 and TNF-α was higher in these mice. The expression of mBD-1 was suppressed in mice being infected with the mutant in comparison to the mice not infected or infected with the wild type. No differences were seen in the histological examination of the colon sections in the different groups of mice. Conclusions E. coli Nissle is producing AI-2 molecules, which are influencing the expression of cytokines in the mucosa of the colon in the DSS mice. However, if QS has a direct influence on the probiotic properties of E. coli Nissle remains to be elucidated.

  7. Live facial feature extraction

    Institute of Scientific and Technical Information of China (English)

    ZHAO JieYu

    2008-01-01

    Precise facial feature extraction is essential to the high-level face recognition and expression analysis. This paper presents a novel method for the real-time geomet-ric facial feature extraction from live video. In this paper, the input image is viewed as a weighted graph. The segmentation of the pixels corresponding to the edges of facial components of the mouth, eyes, brows, and nose is implemented by means of random walks on the weighted graph. The graph has an 8-connected lattice structure and the weight value associated with each edge reflects the likelihood that a random walker will cross that edge. The random walks simulate an anisot-ropic diffusion process that filters out the noise while preserving the facial expres-sion pixels. The seeds for the segmentation are obtained from a color and motion detector. The segmented facial pixels are represented with linked lists in the origi-nal geometric form and grouped into different parts corresponding to facial com-ponents. For the convenience of implementing high-level vision, the geometric description of facial component pixels is further decomposed into shape and reg-istration information. Shape is defined as the geometric information that is invari-ant under the registration transformation, such as translation, rotation, and iso-tropic scale. Statistical shape analysis is carried out to capture global facial fea-tures where the Procrustes shape distance measure is adopted. A Bayesian ap-proach is used to incorporate high-level prior knowledge of face structure. Ex-perimental results show that the proposed method is capable of real-time extraction of precise geometric facial features from live video. The feature extraction is robust against the illumination changes, scale variation, head rotations, and hand inter-ference.

  8. Washingtoni varjatumad vestlused / Argo Ideon

    Index Scriptorium Estoniae

    Ideon, Argo, 1966-

    2007-01-01

    President Toomas Hendrik Ilvese kohtumistel USA presidendi George W. Bushi, kaitseminister Robert M. Gates'i ja juhtivate kongresmenidega olid kõne all viisavabadus, Eestisse NATO küberkeskuse rajamine ning ka suhted Venemaaga. Vabariigi President töövisiidil Ameerika Ühendriikides 25.-26.06.2007

  9. Endine patsiga poiss / Argo Ideon

    Index Scriptorium Estoniae

    Ideon, Argo, 1966-

    2007-01-01

    E-hääletuse süsteemi looja Tarvi Martens sai organisatsioonilt Junior Chamber International (Rahvusvaheline Noortekoda) auhinna. T. Martens ei luba, et lähiajal käivituksid Eestis uued, maailma vapustavad e-lahendused, vaid leiab, et inimesed võiksid rohkem kasutada juba olemasolevaid lahendusi. Eesmärk on, et Eesti oleks 2009. aastaks kõige turvalisema internetiga riik

  10. Features of Women's language

    Institute of Scientific and Technical Information of China (English)

    何延凌

    2008-01-01

    Language is a means of verbal communication.People use language to communicate with each other.In the society,no two speakers are exactly alike in the way of speaking.Some differences are due to age,gender,statue and personality. Above all,gender is one of the obvious reasons.The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation,intonation,diction,subjects,grammar and discourse.From the discussion of the features of women's language,more attention should be paid to language use in social context.What's more,the linguistic phenomena in a speaking community can be understood more thoroughly.

  11. Extending Scalasca's analysis features

    OpenAIRE

    Lorenz, Daniel; Böhme, David; Mohr, Bernd; Strube, Alexandre; Szebenyi, Zoltan

    2013-01-01

    Scalasca is a performance analysis tool, which parses the trace of an application run for certain patterns that indicate performance inefficiencies. In this paper, we present recently developed new features in Scalasaca. In particular, we describe two newly implemented analysis methods: the root cause analysis which tries to identify the cause of a delay and the critical path analysis, which analyses the path of execution that determines the application runtime. Furthermore, we present time-s...

  12. Features or tasks?

    DEFF Research Database (Denmark)

    Heilesen, Simon

    In this paper for the Workshop on Human-computer interaction and e-learning, NordiCHI 2002, the author argues that in developing innovative E-learning systems, especially if constructivist pedagogy is to be applied, it will be useful to model the user interface on the often complex tasks that the...... user has to perform rather than just focusing on technical features (and adapting system use to them)....

  13. Convolutional Channel Features

    OpenAIRE

    Yang, Bin; Yan, Junjie; Lei, Zhen; Li, Stan Z.

    2015-01-01

    Deep learning methods are powerful tools but often suffer from expensive computation and limited flexibility. An alternative is to combine light-weight models with deep representations. As successful cases exist in several visual problems, a unified framework is absent. In this paper, we revisit two widely used approaches in computer vision, namely filtered channel features and Convolutional Neural Networks (CNN), and absorb merits from both by proposing an integrated method called Convolutio...

  14. CBFS: high performance feature selection algorithm based on feature clearness.

    Directory of Open Access Journals (Sweden)

    Minseok Seo

    Full Text Available BACKGROUND: The goal of feature selection is to select useful features and simultaneously exclude garbage features from a given dataset for classification purposes. This is expected to bring reduction of processing time and improvement of classification accuracy. METHODOLOGY: In this study, we devised a new feature selection algorithm (CBFS based on clearness of features. Feature clearness expresses separability among classes in a feature. Highly clear features contribute towards obtaining high classification accuracy. CScore is a measure to score clearness of each feature and is based on clustered samples to centroid of classes in a feature. We also suggest combining CBFS and other algorithms to improve classification accuracy. CONCLUSIONS/SIGNIFICANCE: From the experiment we confirm that CBFS is more excellent than up-to-date feature selection algorithms including FeaLect. CBFS can be applied to microarray gene selection, text categorization, and image classification.

  15. Feature conversion for concurrent engineering

    OpenAIRE

    Kraker, J.K. de

    1998-01-01

    Feature conversion for concurrent engineering integrates two modern product development paradigms. Concurrent engineering is a product development paradigm in which multiple engineering disciplines participate. It optimizes a product with respect to available resources and product quality, for which it requires to communicate between the different engineering disciplines. Feature conversion is a feature modeling technique. The feature modeling paradigm combines geometric and functional produc...

  16. Feature engineering for drug name recognition in biomedical texts: feature conjunction and feature selection.

    Science.gov (United States)

    Liu, Shengyu; Tang, Buzhou; Chen, Qingcai; Wang, Xiaolong; Fan, Xiaoming

    2015-01-01

    Drug name recognition (DNR) is a critical step for drug information extraction. Machine learning-based methods have been widely used for DNR with various types of features such as part-of-speech, word shape, and dictionary feature. Features used in current machine learning-based methods are usually singleton features which may be due to explosive features and a large number of noisy features when singleton features are combined into conjunction features. However, singleton features that can only capture one linguistic characteristic of a word are not sufficient to describe the information for DNR when multiple characteristics should be considered. In this study, we explore feature conjunction and feature selection for DNR, which have never been reported. We intuitively select 8 types of singleton features and combine them into conjunction features in two ways. Then, Chi-square, mutual information, and information gain are used to mine effective features. Experimental results show that feature conjunction and feature selection can improve the performance of the DNR system with a moderate number of features and our DNR system significantly outperforms the best system in the DDIExtraction 2013 challenge. PMID:25861377

  17. Feature Engineering for Drug Name Recognition in Biomedical Texts: Feature Conjunction and Feature Selection

    Directory of Open Access Journals (Sweden)

    Shengyu Liu

    2015-01-01

    Full Text Available Drug name recognition (DNR is a critical step for drug information extraction. Machine learning-based methods have been widely used for DNR with various types of features such as part-of-speech, word shape, and dictionary feature. Features used in current machine learning-based methods are usually singleton features which may be due to explosive features and a large number of noisy features when singleton features are combined into conjunction features. However, singleton features that can only capture one linguistic characteristic of a word are not sufficient to describe the information for DNR when multiple characteristics should be considered. In this study, we explore feature conjunction and feature selection for DNR, which have never been reported. We intuitively select 8 types of singleton features and combine them into conjunction features in two ways. Then, Chi-square, mutual information, and information gain are used to mine effective features. Experimental results show that feature conjunction and feature selection can improve the performance of the DNR system with a moderate number of features and our DNR system significantly outperforms the best system in the DDIExtraction 2013 challenge.

  18. Genomic Feature Models

    DEFF Research Database (Denmark)

    Sørensen, Peter; Edwards, Stefan McKinnon; Rohde, Palle Duun

    Whole-genome sequences and multiple trait phenotypes from large numbers of individuals will soon be available in many populations. Well established statistical modeling approaches enable the genetic analyses of complex trait phenotypes while accounting for a variety of additive and non-additive g......Whole-genome sequences and multiple trait phenotypes from large numbers of individuals will soon be available in many populations. Well established statistical modeling approaches enable the genetic analyses of complex trait phenotypes while accounting for a variety of additive and non...... sets of genetic variants. We have applied these approaches to whole genome sequences and a complex trait phenotype resistance to starvation collected on inbred lines from the Drosophila Genome Reference Panel population. We identified a number of genomic features classification schemes (e.g. prior QTL...

  19. New features in TRANSPORT

    International Nuclear Information System (INIS)

    The computer program TRANSPORT, used for designing charged particle beam transport systems, has been modified to include a number of new features. Among them are the possibility of using accelerator notation to specify the beam matrix, expanded fitting capabilities including the ability to constrain algebraic combinations of matrix elements, and more flexible means of specifying individual or groups of beam line elements. This document is to be used as a supplement to the TRANSPORT manual. It is organized by type code, as is the manual. The contents of this report will eventually be written into a revised TRANSPORT manual. In a few instances, the material of the manual has been rewritten, but in most cases it has simply been expanded

  20. European Nuclear Features

    Energy Technology Data Exchange (ETDEWEB)

    Barre, B.; Gonzalez, E.; Diaz Diaz, J.L.; Jimenez, J.L.; Velarde, G.; Navarro, J.M.; Hittner, D.; Dominguez, M.T.; Bollini, G.; Martin, A.; Suarez, J.; Traini, E.; Lang-Lenton, J.

    2004-09-01

    ''European Nuclear Features - ENF'' is a joint publication of the three specialized technical journals, Nuclear Espana (Spain), Revue General Nucleaire (France), and atw - International Journal of Nuclear Power (Germany). The ENF support the international Europeen exchange of information and news about energy and nuclear power. News items, comments, and scientific and technical contributions will cover important aspects of the field. The second issue of ENF contains contributions about theses topics, among others: Institutional and Political Changes in the EU. - CIEMAT Department of Nuclear Fission: A General Overview. - Inertial Fusion Energy at DENIM. - High Temperature Reactors. European Research Programme. - On Site Assistance to Khmelnitsky NPP 1 and 2 (Ukraine). - Dismantling and Decommissioning of Vandellos I. (orig.)

  1. More features, greater connectivity.

    Science.gov (United States)

    Hunt, Sarah

    2015-09-01

    Changes in our political infrastructure, the continuing frailties of our economy, and a stark growth in population, have greatly impacted upon the perceived stability of the NHS. Healthcare teams have had to adapt to these changes, and so too have the technologies upon which they rely to deliver first-class patient care. Here Sarah Hunt, marketing co-ordinator at Aid Call, assesses how the changing healthcare environment has affected one of its fundamental technologies - the nurse call system, argues the case for wireless such systems in terms of what the company claims is greater adaptability to changing needs, and considers the ever-wider range of features and functions available from today's nurse call equipment, particularly via connectivity with both mobile devices, and ancillaries ranging from enuresis sensors to staff attack alert 'badges'. PMID:26548128

  2. Abdominal tuberculosis: Imaging features

    International Nuclear Information System (INIS)

    Radiological findings of abdominal tuberculosis can mimic those of many different diseases. A high level of suspicion is required, especially in high-risk population. In this article, we will describe barium studies, ultrasound (US) and computed tomography (CT) findings of abdominal tuberculosis (TB), with emphasis in the latest. We will illustrate CT findings that can help in the diagnosis of abdominal tuberculosis and describe imaging features that differentiate it from other inflammatory and neoplastic diseases, particularly lymphoma and Crohn's disease. As tuberculosis can affect any organ in the abdomen, emphasis is placed to ileocecal involvement, lymphadenopathy, peritonitis and solid organ disease (liver, spleen and pancreas). A positive culture or hystologic analysis of biopsy is still required in many patients for definitive diagnosis. Learning objectives:1.To review the relevant pathophysiology of abdominal tuberculosis. 2.Illustrate CT findings that can help in the diagnosis

  3. 面向过程挖掘的C4.5在营销决策支持系统中的应用%The Application of C4.5 Professes Mining Oriented in Marketing DSS

    Institute of Scientific and Technical Information of China (English)

    钱峰; 程鸿芳; 陶维成

    2012-01-01

    In the entire process of marketing, it determines that what type of products is more suitable for the market demand in high, medium and low - grade products from the target market. The enterprises adjust the product structure to the change of market in complicated market conditions according to the judgment. In this paper, the system imports the original MIS data processed into data warehouse to form structured data adopting the data miner C4. 5 arithmetic. It analysis and evaluates the mining result on data mining methods, and gives assistant decision scope to DSS fully.%产品营销过程中,企业需从目标市场中判断高、中、低档产品,哪类更适合其市场需求,以此可使在复杂的市场环境下及时调整产品结构,适应市场需求变化。本文采用数据挖掘C4.5算法,将原有的硒数据经处理后,导入到数据仓库中形成结构化数据,采用过程挖掘的方法对挖掘结果进行分析和评估,充分发挥决策支持系统的辅助决策作用。

  4. Feature-Based Attention and Feature-Based Expectation.

    Science.gov (United States)

    Summerfield, Christopher; Egner, Tobias

    2016-06-01

    Foreknowledge of target stimulus features improves visual search performance as a result of 'feature-based attention' (FBA). Recent studies have reported that 'feature-based expectation' (FBE) also heightens decision sensitivity. Superficially, it appears that the latter work has simply rediscovered (and relabeled) the effects of FBA. However, this is not the case. Here we explain why. PMID:27079632

  5. Extremely high-dimensional feature selection via feature generating samplings.

    Science.gov (United States)

    Li, Shutao; Wei, Dan

    2014-06-01

    To select informative features on extremely high-dimensional problems, in this paper, a sampling scheme is proposed to enhance the efficiency of recently developed feature generating machines (FGMs). Note that in FGMs O(mlogr) time complexity should be taken to order the features by their scores; the entire computational cost of feature ordering will become unbearable when m is very large, for example, m > 10(11) , where m is the feature dimensionality and r is the size of the selected feature subset. To solve this problem, in this paper, we propose a feature generating sampling method, which can reduce this computational complexity to O(Gslog(G)+G(G+log(G))) while preserving the most informative features in a feature buffer, where Gs is the maximum number of nonzero features for each instance and G is the buffer size. Moreover, we show that our proposed sampling scheme can be deemed as the birth-death process based on random processes theory, which guarantees to include most of the informative features for feature selections. Empirical studies on real-world datasets show the effectiveness of the proposed sampling method. PMID:23864272

  6. CT features of adenomyosis

    Energy Technology Data Exchange (ETDEWEB)

    Woodfield, Courtney A. [Department of Diagnostic Imaging, Brown Medical School/Rhode Island Hospital, 593 Eddy Street, Providence, RI 02903 (United States)], E-mail: cwoodfield@lifespan.org; Siegelman, Evan S. [Department of Radiology, University of Pennsylvania School of Medicine, 3400 Spruce Street, Philadelphia, PA 19104 (United States)], E-mail: Evan.Siegelman@uphs.upenn.edu; Coleman, Beverly G. [Department of Radiology, University of Pennsylvania School of Medicine, 3400 Spruce Street, Philadelphia, PA 19104 (United States)], E-mail: Beverly.Coleman@uphs.upenn.edu; Torigian, Drew A. [Department of Radiology, University of Pennsylvania School of Medicine, 3400 Spruce Street, Philadelphia, PA 19104 (United States)], E-mail: Drew.Torigian@uphs.upenn.edu

    2009-12-15

    Objectives: To determine the computed tomography (CT) features of adenomyosis in patients with known adenomyosis as established with magnetic resonance (MR) imaging. Methods: A computerized search identified 16 women with pelvic MR diagnosis of adenomyosis who also had enhanced pelvic CT. Original CT reports were reviewed for potential prospective diagnosis of adenomyosis. CT images were reviewed for enhancement phase, inner and outer myometrium attenuation, uterine enlargement (width>6 cm), inner myometrial thickening ({>=}12 mm), and myometrial cysts. Results: Adenomyosis was detectable on CT in 8 of 16 patients. For these 8 patients, inner and outer myometrium distinction was excellent in 7 (88%) and limited in 1 (12%), and mean inner myometrial thickness was 25 mm (range 14-47 mm). CT enhancement phase was parenchymal in 7 (88%), uterus was enlarged in 8 (100%), and 7 (88%) had myometrial cysts. Adenomyosis was focal in 5 (63%), diffuse in 2 (25%), and both in 1 (12%). None of the original CT reports included adenomyosis as a diagnosis. Conclusions: CT can suggest a diagnosis of adenomyosis based on uterine enlargement, thickened inner myometrium, and/or myometrial cysts.

  7. CT features of adenomyosis

    International Nuclear Information System (INIS)

    Objectives: To determine the computed tomography (CT) features of adenomyosis in patients with known adenomyosis as established with magnetic resonance (MR) imaging. Methods: A computerized search identified 16 women with pelvic MR diagnosis of adenomyosis who also had enhanced pelvic CT. Original CT reports were reviewed for potential prospective diagnosis of adenomyosis. CT images were reviewed for enhancement phase, inner and outer myometrium attenuation, uterine enlargement (width>6 cm), inner myometrial thickening (≥12 mm), and myometrial cysts. Results: Adenomyosis was detectable on CT in 8 of 16 patients. For these 8 patients, inner and outer myometrium distinction was excellent in 7 (88%) and limited in 1 (12%), and mean inner myometrial thickness was 25 mm (range 14-47 mm). CT enhancement phase was parenchymal in 7 (88%), uterus was enlarged in 8 (100%), and 7 (88%) had myometrial cysts. Adenomyosis was focal in 5 (63%), diffuse in 2 (25%), and both in 1 (12%). None of the original CT reports included adenomyosis as a diagnosis. Conclusions: CT can suggest a diagnosis of adenomyosis based on uterine enlargement, thickened inner myometrium, and/or myometrial cysts.

  8. Feature Reduction in Graph Analysis

    Directory of Open Access Journals (Sweden)

    Punpiti Piamsa-nga

    2008-08-01

    Full Text Available A common approach to improve medical image classification is to add more features to the classifiers; however, this increases the time required for preprocessing raw data and training the classifiers, and the increase in features is not always beneficial. The number of commonly used features in the literature for training of image feature classifiers is over 50. Existing algorithms for selecting a subset of available features for image analysis fail to adequately eliminate redundant features. This paper presents a new selection algorithm based on graph analysis of interactions among features and between features to classifier decision. A modification of path analysis is done by applying regression analysis, multiple logistic and posterior Bayesian inference in order to eliminate features that provide the same contributions. A database of 113 mammograms from the Mammographic Image Analysis Society was used in the experiments. Tested on two classifiers – ANN and logistic regression – cancer detection accuracy (true positive and false-positive rates using a 13-feature set selected by our algorithm yielded substantially similar accuracy as using a 26-feature set selected by SFS and results using all 50-features. However, the 13-feature greatly reduced the amount of computation needed.

  9. Zone-size nonuniformity of {sup 18}F-FDG PET regional textural features predicts survival in patients with oropharyngeal cancer

    Energy Technology Data Exchange (ETDEWEB)

    Cheng, Nai-Ming [Chang Gung Memorial Hospital and Chang Gung University, Departments of Nuclear Medicine, Taiyuan (China); Chang Gung Memorial Hospital, Department of Nuclear Medicine, Keelung (China); National Tsing Hua University, Department of Biomedical Engineering and Environmental Sciences, Hsinchu (China); Fang, Yu-Hua Dean [Chang Gung University, Department of Electrical Engineering, Taiyuan (China); Lee, Li-yu [Chang Gung University College of Medicine, Department of Pathology, Chang Gung Memorial Hospital, Taoyuan (China); Chang, Joseph Tung-Chieh; Tsan, Din-Li [Chang Gung University College of Medicine, Department of Radiation Oncology, Chang Gung Memorial Hospital, Taoyuan (China); Ng, Shu-Hang [Chang Gung University College of Medicine, Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Taoyuan (China); Wang, Hung-Ming [Chang Gung University College of Medicine, Division of Hematology/Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital, Taoyuan (China); Liao, Chun-Ta [Chang Gung University College of Medicine, Department of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Taoyuan (China); Yang, Lan-Yan [Chang Gung Memorial Hospital, Biostatistics Unit, Clinical Trial Center, Taoyuan (China); Hsu, Ching-Han [National Tsing Hua University, Department of Biomedical Engineering and Environmental Sciences, Hsinchu (China); Yen, Tzu-Chen [Chang Gung Memorial Hospital and Chang Gung University, Departments of Nuclear Medicine, Taiyuan (China); Chang Gung University College of Medicine, Department of Nuclear Medicine and Molecular Imaging Center, Chang Gung Memorial Hospital, Taipei (China)

    2014-10-23

    The question as to whether the regional textural features extracted from PET images predict prognosis in oropharyngeal squamous cell carcinoma (OPSCC) remains open. In this study, we investigated the prognostic impact of regional heterogeneity in patients with T3/T4 OPSCC. We retrospectively reviewed the records of 88 patients with T3 or T4 OPSCC who had completed primary therapy. Progression-free survival (PFS) and disease-specific survival (DSS) were the main outcome measures. In an exploratory analysis, a standardized uptake value of 2.5 (SUV 2.5) was taken as the cut-off value for the detection of tumour boundaries. A fixed threshold at 42 % of the maximum SUV (SUV{sub max} 42 %) and an adaptive threshold method were then used for validation. Regional textural features were extracted from pretreatment {sup 18}F-FDG PET/CT images using the grey-level run length encoding method and grey-level size zone matrix. The prognostic significance of PET textural features was examined using receiver operating characteristic (ROC) curves and Cox regression analysis. Zone-size nonuniformity (ZSNU) was identified as an independent predictor of PFS and DSS. Its prognostic impact was confirmed using both the SUV{sub max} 42 % and the adaptive threshold segmentation methods. Based on (1) total lesion glycolysis, (2) uniformity (a local scale texture parameter), and (3) ZSNU, we devised a prognostic stratification system that allowed the identification of four distinct risk groups. The model combining the three prognostic parameters showed a higher predictive value than each variable alone. ZSNU is an independent predictor of outcome in patients with advanced T-stage OPSCC, and may improve their prognostic stratification. (orig.)

  10. Search features of digital libraries

    OpenAIRE

    Smith, Alastair G.

    2000-01-01

    Traditional on-line search services such as Dialog, DataStar and Lexis provide a wide range of search features (boolean and proximity operators, truncation, etc). This paper discusses the use of these features for effective searching, and argues that these features are required, regardless of advances in search engine technology. The literature on on-line searching is reviewed, identifying features that searchers find desirable for effective searching. A selective survey of current digital li...

  11. Multimodal Biometrics at Feature Level Fusion using Texture Features

    Directory of Open Access Journals (Sweden)

    Maya V. Karki

    2013-06-01

    Full Text Available In recent years, fusion of multiple biometric modalities for personal authentication has received considerable attention. This paper presents a feature level fusion algorithm based on texture features. The system combines fingerprint, face and off-line signature. Texture features are extracted from Curvelet transform. The Curvelet feature dimension is selected based on d-prime number. The increase in feature dimension is reduced by using template averaging, moment features and by Principal component analysis (PCA. The algorithm is tested on in-house multimodal database comprising of 3000 samples and Chimeric databases. Identification performance of the system is evaluated using SVM classifier. A maximum GAR of 97.15% is achieved with Curvelet-PCA features.

  12. Finding phonological features in perception

    NARCIS (Netherlands)

    K. Chládková

    2014-01-01

    This thesis investigated whether phonological features have perceptual bases. The search for features in perception was approached from several angles: from that of an adult listener who has a fully acquired language system in place, from that of a linguist who aims to uncover feature structures in

  13. FEATURE SELECTION METHODS AND ALGORITHMS

    Directory of Open Access Journals (Sweden)

    L.Ladha,

    2011-05-01

    Full Text Available Feature selection is an important topic in data mining, especially for high dimensional datasets. Feature selection (also known as subset selection is a process commonly used in machine learning, wherein subsets of the features available from the data are selected for application of a learning algorithm. The best subset contains the least number of dimensions that most contribute to accuracy; wediscard the remaining, unimportant dimensions. This is an important stage of preprocessing and is one of two ways of avoiding the curse of dimensionality (the other is feature extraction. There are twoapproaches in Feature selection known as Forward selection and backward selection. Feature selection has been an active research area in pattern recognition, statistics, and data mining communities.The main idea of feature selection is to choose a subset of input variables by eliminating features with little or no predictive information. Feature selection methods can be decomposed into three broad classes. One is Filter methods and another one is Wrapper method and the third one is Embedded method. This paper presents an empirical comparison of feature selection methods and its algorithms. In view of the substantial number of existing feature selection algorithms, the need arises to count on criteria that enable to adequately decide which algorithm to use in certain situations. This work reviews several fundamental algorithms found in the literature and assesses their performance in a controlled scenario.

  14. Complex Topographic Feature Ontology Patterns

    Science.gov (United States)

    Varanka, Dalia E.; Jerris, Thomas J.

    2015-01-01

    Semantic ontologies are examined as effective data models for the representation of complex topographic feature types. Complex feature types are viewed as integrated relations between basic features for a basic purpose. In the context of topographic science, such component assemblages are supported by resource systems and found on the local landscape. Ontologies are organized within six thematic modules of a domain ontology called Topography that includes within its sphere basic feature types, resource systems, and landscape types. Context is constructed not only as a spatial and temporal setting, but a setting also based on environmental processes. Types of spatial relations that exist between components include location, generative processes, and description. An example is offered in a complex feature type ‘mine.’ The identification and extraction of complex feature types are an area for future research.

  15. Webcam classification using simple features

    Science.gov (United States)

    Pramoun, Thitiporn; Choe, Jeehyun; Li, He; Chen, Qingshuang; Amornraksa, Thumrongrat; Lu, Yung-Hsiang; Delp, Edward J.

    2015-03-01

    Thousands of sensors are connected to the Internet and many of these sensors are cameras. The "Internet of Things" will contain many "things" that are image sensors. This vast network of distributed cameras (i.e. web cams) will continue to exponentially grow. In this paper we examine simple methods to classify an image from a web cam as "indoor/outdoor" and having "people/no people" based on simple features. We use four types of image features to classify an image as indoor/outdoor: color, edge, line, and text. To classify an image as having people/no people we use HOG and texture features. The features are weighted based on their significance and combined. A support vector machine is used for classification. Our system with feature weighting and feature combination yields 95.5% accuracy.

  16. Feature Selection: A Data Perspective

    OpenAIRE

    Li, Jundong; Cheng, Kewei; Wang, Suhang; Morstatter, Fred; Trevino, Robert P.; Tang, Jiliang; Liu, Huan

    2016-01-01

    Feature selection, as a data preprocessing strategy, has been proven to be effective and efficient in preparing high-dimensional data for data mining and machine learning problems. The objectives of feature selection include: building simpler and more comprehensible models, improving data mining performance, and preparing clean, understandable data. The recent proliferation of big data has presented some substantial challenges and opportunities of feature selection algorithms. In this survey,...

  17. Emergent interfaces for feature modularization

    CERN Document Server

    Ribeiro, Márcio; Brabrand, Claus

    2014-01-01

    Developers frequently introduce errors into software systems when they fail to recognise module dependencies. Using forty-three software families and Software Product Lines (SPLs), where the majority are commonly used in industrial practice, the authors reports on the feature modularization problem and provides a study of how often it may occur in practice. To solve the problem they present the concept of emergent feature modularization which aims to establish contracts between features to prevent developers from breaking other features when performing a maintenance task.

  18. Search for faint galactic features

    Energy Technology Data Exchange (ETDEWEB)

    Matuska, W.; Burkhead, M.S.

    1980-01-01

    Trying to determine the size of galaxies and looking for tails and connections between galaxies can be intriguing. These very faint features are often buried in the film grain noise. Our study is of the NGC 3623, NGC 3627 and NGC 3628 region. The search for these faint features is complicated by film variation, sky background, microdensitometer drift and stars in the neighborhood of the galaxies. These questions are addressed and faint features are found with the use of judicious data stretching and averaging along suspected features.

  19. Superclusters and Voids in the Sloan DSS

    OpenAIRE

    Mueller, Volker; Maulbetsch, Christian

    2004-01-01

    We analyze quasi-2-dimensional slices of the SDSS EDR. Gaussian smoothing with weighting by the inverse of the selection function provides 2D density fields across the full survey depth. Superclusters (SC) are characterized by a percolation algorithm in the large-scale smoothed field. Group candidates are identified with density maxima in the small-scale smoothed field. The group mass function depends on the SC environmental density. We derive the shape-dependent 3-point correlation function ...

  20. DSS and GIS in Knowledge Transformation Process

    Czech Academy of Sciences Publication Activity Database

    Klimešová, Dana; Brožová, H.

    2009-01-01

    Roč. 2, č. 1 (2009), s. 1-15. ISSN 1803-1617 Institutional research plan: CEZ:AV0Z10750506 Keywords : Tacit and explicit knowledge * SECI model * Operations Research * Management Science Models Subject RIV: BD - Theory of Information

  1. Návrh Retail Business DSS

    OpenAIRE

    Mašek, Daniel

    2011-01-01

    The reason why I chose this topic is not nor the complexity of global world neither the growing pressure on quick and effective managerial resolutions as it is mentioned in similar scripts. Surprisingly, the main impulse was the synergy of three principal aspects of my master study. First millstone was a study of main specialization by its self: Information management, on cathedra of System analysis, faculty of Informatics and Statistics, Economic University in Prague. The second angle is the...

  2. Data Warehouse Architecture for DSS Applciations

    OpenAIRE

    V. J. Anand; Himawan Gunadhi

    1996-01-01

    A data warehouse facilitates the integration of disparate operational databases in an enterprise into a single store. The warehouse then provides knowledge workers with easy access to historical, summarized and other forms of aggregated data. A major flaw in present warehouse architectures is the de-coupling of the warehouse database from its underlying operational databases. This creates two problems: the difficulty in updating the warehouse and the inability to provide users with a drill-do...

  3. Partial Epilepsy with Auditory Features

    Directory of Open Access Journals (Sweden)

    J Gordon Millichap

    2004-07-01

    Full Text Available The clinical characteristics of 53 sporadic (S cases of idiopathic partial epilepsy with auditory features (IPEAF were analyzed and compared to previously reported familial (F cases of autosomal dominant partial epilepsy with auditory features (ADPEAF in a study at the University of Bologna, Italy.

  4. Seawater temperature model from Argo data by LM-BP neural network in Northwest Pacific Ocean%基于LM-BP神经网络的Argo数据西北太平洋海水温度模型

    Institute of Scientific and Technical Information of China (English)

    韩震; 赵宁

    2012-01-01

    Using the LM-BP neural network and choosing the sea surface temperature, longitude, latitude and depth obtained from Argo data in 2007 as input parameters, the seawater temperature model of the Northwest Pacific Ocean was built. Using the root-mean-square error( RMSE) and the Pearson' s correlation coefficient (R) as test indices, the model was evaluated by the data in the period 2008 ~ 2009. The results were that the RMSE was 0.714 0 ℃ and R was 0.996 8 in 2008. The RMSE was 0.761 5 ℃ and R was 0.996 5 in 2009. lt shown this seawater temperature model was.%以2007年西北太平洋海域Argo海表面温度、经纬度、深度为输入参数,利用LM-BP神经网络,构建了西北太平洋海水温度模型.将均方根差以及Pearson相关性系数作为检验指标,利用2008年和2009年的Argo数据对模型进行了检验.检验结果为:2008年均方根误差为0.7140℃,Pearson相关性系数为0.9968;2009年均方根误差为0.761 5℃,Pearson相关性系数为0.9965.表明所建立的基于LM-BP神经网络的Argo数据西北太平洋海水温度模型是可行的.

  5. Language Features and Culture Features on Short Message

    Institute of Scientific and Technical Information of China (English)

    王佳

    2013-01-01

    Mobile phone is regarded as“the fifth media”after newspaper,radio,TV and the Internet.The mobile phone short message further highlights the importance of written signs in communication.“The thumb revolution”is eagerly anticipating one kind of trend by the hand replace of mouth,sound substitute for the quiet around us. My paper will analyze the language features and the culture features of mobile phone short messages which are written in Chinese and English.

  6. Feature

    Science.gov (United States)

    2011-01-01

    Shi Changxu, former vice-president of NSFC wins Top Prize of National Science and Technology Award of China Both China and the world materials community have greatly benefitted from his service, by RPH Chang Shi Changxu—a great teacher and mentor for materials scientists, by Gaoqing Max Lu A bright example for all of us—Professor Shi Changxu, by Wei Gao Professor Shi Changxu—The Giant Materials Scientist of China, by Wuzong Zhou Congratulations to Academician Changxu Shi on the Occasion of His Winning the 2010 Chinese Science & Technology Grand Prize, by Ju Li, Kai Chen, Zhiwei Shan, Guanjun Qiao, Jun Sun and Evan Ma Materials—the foundation for technology revolutions, by Zhong Lin Wang

  7. Feature

    OpenAIRE

    Camilleri, Kenneth; Falzon, Owen; Camilleri, Tracey; Duca, Edward

    2012-01-01

    Decades-long research into the field of brain to computer interface (BCI) devices seems close to be bearing fruit. These devices could provide communication tools to Malta's growing number of older people and the disabled, while local gaming companies could exploit a new niche entertainment market. http://www.um.edu.mt/think/moving-objects-with-your-mind/

  8. Entangled topological features of light

    CERN Document Server

    Romero, J; Jack, B; Dennis, M R; Franke-Arnold, S; Barnett, S M; Padgett, M J

    2011-01-01

    We report the entanglement of topological features, namely, isolated, linked optical vortex loops in the light from spontaneous parametric down-conversion (SPDC). In three dimensions, optical vortices are lines of phase singularity and vortices of energy flow which percolate through all optical fields. This example of entanglement is between features that extend over macroscopic and finite volumes, furthermore, topological features are robust to perturbation . The entanglement of photons in complex three-dimensional(3D) topological states suggests the possibility of entanglement of similar structures in other quantum systems describable by complex scalar functions, such as superconductors, superfluids and Bose-Einstein condensates.

  9. Enhanced feature integration in musicians

    DEFF Research Database (Denmark)

    Hansen, Niels Christian; Højlund, Andreas; Møller, Cecilie;

    Distinguishing and integrating features of sensory input is essential to human survival and no less paramount in music perception and cognition. Yet, little is known about training-induced plasticity of neural mechanisms for auditory feature integration. This study aimed to contrast the two...... hypotheses that musical expertise leads to more independent (i.e. segregated) or more dependent (i.e. integrated) processing of acoustic features presented in contexts with high or low ecological validity with respect to music. To this end, mismatch negativity (MMNm) was recorded with magnetoencephalography...... (MEG) from 25 musicians and 25 non-musicians, exposed to sounds presented in interleaved blocks of a musical multi-feature paradigm and a classical oddball control paradigm. In addition to single deviants differing in pitch (P), intensity (I), or perceived location (L), double and triple deviants were...

  10. Emotion Recognition using Speech Features

    CERN Document Server

    Rao, K Sreenivasa

    2013-01-01

    “Emotion Recognition Using Speech Features” covers emotion-specific features present in speech and discussion of suitable models for capturing emotion-specific information for distinguishing different emotions.  The content of this book is important for designing and developing  natural and sophisticated speech systems. Drs. Rao and Koolagudi lead a discussion of how emotion-specific information is embedded in speech and how to acquire emotion-specific knowledge using appropriate statistical models. Additionally, the authors provide information about using evidence derived from various features and models. The acquired emotion-specific knowledge is useful for synthesizing emotions. Discussion includes global and local prosodic features at syllable, word and phrase levels, helpful for capturing emotion-discriminative information; use of complementary evidences obtained from excitation sources, vocal tract systems and prosodic features in order to enhance the emotion recognition performance;  and pro...

  11. Solar Features - Prominences and Filaments

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Prominences and filaments are two manifestations of the same phenomenon. Both prominences and filaments are features formed above the chromosphere by cool dense...

  12. Features of Fragile X Syndrome

    Science.gov (United States)

    ... Figuring Out CGG Repeats! Donate | Print Fragile X Syndrome Fragile X syndrome (FXS) is a genetic condition that causes ... health concerns associated with the condition. Features of Fragile X Syndrome in Males Read our Story The majority of ...

  13. Feature conversion for concurrent engineering

    NARCIS (Netherlands)

    De Kraker, J.K.

    1998-01-01

    Feature conversion for concurrent engineering integrates two modern product development paradigms. Concurrent engineering is a product development paradigm in which multiple engineering disciplines participate. It optimizes a product with respect to available resources and product quality, for which

  14. Feature-Level Domain Adaptation

    OpenAIRE

    Kouw, Wouter M.; Krijthe, Jesse H.; Loog, Marco; van der Maaten, Laurens J. P.

    2015-01-01

    Domain adaptation is the supervised learning setting in which the training and test data originate from different domains: the so-called source and target domains. In this paper, we propose and study a domain adaption approach, called feature-level domain adaptation (flda), that models the dependence between two domains by means of a feature-level transfer distribution. The domain adapted classifier is trained by minimizing the expected loss under this transfer distribution. Our empirical eva...

  15. Primordial features and Planck polarization

    OpenAIRE

    Hazra, Dhiraj Kumar; Shafieloo, Arman; Smoot, George F.; Starobinsky, Alexei A.

    2016-01-01

    With the Planck 2015 Cosmic Microwave Background (CMB) temperature and polarization data, we examine possibility of having features in the primordial power spectrum (PPS). We revisit the Wiggly Whipped Inflation (WWI) framework and demonstrate how generation of some particular primordial features can improve the fit to Planck data. WWI potential allows the scalar field to transit from a steeper potential to a nearly flat potential through a discontinuity either in potential or in its derivati...

  16. Features of Medical English Vocabulary

    Institute of Scientific and Technical Information of China (English)

    刘翠萍

    2015-01-01

    Medical English is relatively more difficult than general English,especially its vocabulary.Those medical English words are long and complex,making it hard to remember. But medical English vocabulary has its own features,which would help us in learning vocabulary.On the basis of many medical English materials,the paper explores the features of etymology,affixes and roots of medical English.

  17. Features of Medical English Vocabulary

    Institute of Scientific and Technical Information of China (English)

    刘翠萍

    2015-01-01

    Medical English is relatively more difficult than general English,especially its vocabulary.Those medical English words are long and complex,making it hard to remember.But medical English vocabulary has its own features,which would help us in learning vocabulary.On the basis of many medical English materials,the paper explores the features of etymology,affixes and roots of medical English.

  18. Correlative feature analysis on FFDM

    International Nuclear Information System (INIS)

    Identifying the corresponding images of a lesion in different views is an essential step in improving the diagnostic ability of both radiologists and computer-aided diagnosis (CAD) systems. Because of the nonrigidity of the breasts and the 2D projective property of mammograms, this task is not trivial. In this pilot study, we present a computerized framework that differentiates between corresponding images of the same lesion in different views and noncorresponding images, i.e., images of different lesions. A dual-stage segmentation method, which employs an initial radial gradient index (RGI) based segmentation and an active contour model, is applied to extract mass lesions from the surrounding parenchyma. Then various lesion features are automatically extracted from each of the two views of each lesion to quantify the characteristics of density, size, texture and the neighborhood of the lesion, as well as its distance to the nipple. A two-step scheme is employed to estimate the probability that the two lesion images from different mammographic views are of the same physical lesion. In the first step, a correspondence metric for each pairwise feature is estimated by a Bayesian artificial neural network (BANN). Then, these pairwise correspondence metrics are combined using another BANN to yield an overall probability of correspondence. Receiver operating characteristic (ROC) analysis was used to evaluate the performance of the individual features and the selected feature subset in the task of distinguishing corresponding pairs from noncorresponding pairs. Using a FFDM database with 123 corresponding image pairs and 82 noncorresponding pairs, the distance feature yielded an area under the ROC curve (AUC) of 0.81±0.02 with leave-one-out (by physical lesion) evaluation, and the feature metric subset, which included distance, gradient texture, and ROI-based correlation, yielded an AUC of 0.87±0.02. The improvement by using multiple feature metrics was statistically

  19. Correlative feature analysis on FFDM

    Energy Technology Data Exchange (ETDEWEB)

    Yuan Yading; Giger, Maryellen L.; Li Hui; Sennett, Charlene [Department of Radiology, Committee on Medical Physics, University of Chicago, 5841 South Maryland Avenue, MC 2026 Chicago, Illinois 60637 (United States)

    2008-12-15

    Identifying the corresponding images of a lesion in different views is an essential step in improving the diagnostic ability of both radiologists and computer-aided diagnosis (CAD) systems. Because of the nonrigidity of the breasts and the 2D projective property of mammograms, this task is not trivial. In this pilot study, we present a computerized framework that differentiates between corresponding images of the same lesion in different views and noncorresponding images, i.e., images of different lesions. A dual-stage segmentation method, which employs an initial radial gradient index (RGI) based segmentation and an active contour model, is applied to extract mass lesions from the surrounding parenchyma. Then various lesion features are automatically extracted from each of the two views of each lesion to quantify the characteristics of density, size, texture and the neighborhood of the lesion, as well as its distance to the nipple. A two-step scheme is employed to estimate the probability that the two lesion images from different mammographic views are of the same physical lesion. In the first step, a correspondence metric for each pairwise feature is estimated by a Bayesian artificial neural network (BANN). Then, these pairwise correspondence metrics are combined using another BANN to yield an overall probability of correspondence. Receiver operating characteristic (ROC) analysis was used to evaluate the performance of the individual features and the selected feature subset in the task of distinguishing corresponding pairs from noncorresponding pairs. Using a FFDM database with 123 corresponding image pairs and 82 noncorresponding pairs, the distance feature yielded an area under the ROC curve (AUC) of 0.81{+-}0.02 with leave-one-out (by physical lesion) evaluation, and the feature metric subset, which included distance, gradient texture, and ROI-based correlation, yielded an AUC of 0.87{+-}0.02. The improvement by using multiple feature metrics was statistically

  20. Search features of digital libraries

    Directory of Open Access Journals (Sweden)

    Alastair G. Smith

    2000-01-01

    Full Text Available Traditional on-line search services such as Dialog, DataStar and Lexis provide a wide range of search features (boolean and proximity operators, truncation, etc. This paper discusses the use of these features for effective searching, and argues that these features are required, regardless of advances in search engine technology. The literature on on-line searching is reviewed, identifying features that searchers find desirable for effective searching. A selective survey of current digital libraries available on the Web was undertaken, identifying which search features are present. The survey indicates that current digital libraries do not implement a wide range of search features. For instance: under half of the examples included controlled vocabulary, under half had proximity searching, only one enabled browsing of term indexes, and none of the digital libraries enable searchers to refine an initial search. Suggestions are made for enhancing the search effectiveness of digital libraries, for instance by: providing a full range of search operators, enabling browsing of search terms, enhancement of records with controlled vocabulary, enabling the refining of initial searches, etc.

  1. Information based universal feature extraction

    Science.gov (United States)

    Amiri, Mohammad; Brause, Rüdiger

    2015-02-01

    In many real world image based pattern recognition tasks, the extraction and usage of task-relevant features are the most crucial part of the diagnosis. In the standard approach, they mostly remain task-specific, although humans who perform such a task always use the same image features, trained in early childhood. It seems that universal feature sets exist, but they are not yet systematically found. In our contribution, we tried to find those universal image feature sets that are valuable for most image related tasks. In our approach, we trained a neural network by natural and non-natural images of objects and background, using a Shannon information-based algorithm and learning constraints. The goal was to extract those features that give the most valuable information for classification of visual objects hand-written digits. This will give a good start and performance increase for all other image learning tasks, implementing a transfer learning approach. As result, in our case we found that we could indeed extract features which are valid in all three kinds of tasks.

  2. Tracking facial features with occlusions

    Institute of Scientific and Technical Information of China (English)

    MARKIN Evgeny; PRAKASH Edmond C.

    2006-01-01

    Facial expression recognition consists of determining what kind of emotional content is presented in a human face.The problem presents a complex area for exploration, since it encompasses face acquisition, facial feature tracking, facial expression classification. Facial feature tracking is of the most interest. Active Appearance Model (AAM) enables accurate tracking of facial features in real-time, but lacks occlusions and self-occlusions. In this paper we propose a solution to improve the accuracy of fitting technique. The idea is to include occluded images into AAM training data. We demonstrate the results by running ex periments using gradient descent algorithm for fitting the AAM. Our experiments show that using fitting algorithm with occluded training data improves the fitting quality of the algorithm.

  3. The MCLIB library: New features

    International Nuclear Information System (INIS)

    This report describes the philosophy and structure of MCLIB, A Fortran library of Monte Carlo subroutines which has been developed to test designs of neutron scattering instruments. Emphasis is placed on new features added to the library since the previous presentation of MCLIB at ICANS-XIII in October, 1995. These new features include toroidal mirrors, writing and reading source files, splitting and banking of histories, and a Maxwellian probability distribution. The only change of a program structure has been to include charge and polarization vector in the description of a particle. The latest release of the source code and documentation may be obtained by anonymous ftp. Work is also continuing on a more friendly web-based user interface, and user input is requested for additional features to be added to the library

  4. Linguistic Features of English Advertisement

    Institute of Scientific and Technical Information of China (English)

    侯志荣

    2008-01-01

    Along with the rapid development of global economy,numerous colorful and fantastic English advertisements appear in Current markets.Through careful analysis we can find that English advertisements have formed their own linguistic features.The designers usually employ the special lexis,syntax and rhetorical devices to make their advertisement a concise,lively and appealing one.This paper analyzes the linguistic features of English advertisement.from which it gets some inspirations for C-E advertisement translation(translation of Chinese advertisement into English).

  5. Termination shock particle spectral features

    OpenAIRE

    Cummings, A. C.; Stone, E. C.; McDonald, F. B.; Heikkila, B. C.; Lal, N.; Webber, W. R.

    2006-01-01

    Spectral features of energetic H ions accelerated at the termination shock may be evidence of two components. At low energies the energy spectrum is ~E^(–1.55), with break at ~0.4 MeV to E^(–2.2). A second component appears above ~1 MeV with a spectrum of E^(–1.27) with a break at ~3.2 MeV. Even though the intensities upstream are highly variable, the same spectral break energies are observed, suggesting that these are durable features of the source spectrum. The acceleration processes for th...

  6. ARGOS PHWR 380. Argentine offer of a safer pressurized heavy-water reactor of 380 MW. '...a many-eyed guardian...' concerned about nuclear power plant safety

    International Nuclear Information System (INIS)

    Reactor vendors in most countries have had lean pickings for the past decade, and ordering seems unlikely to show much growth until the shock wave from the Chernobyl accident has died away. Paradoxically, however, at least one firm sees a niche in the market. ENACE - the Empresa Nuclear Argentina de Centrales Electricas, or Argentine Nuclear Power Plant Corporation - is stepping out into the market place with a newly-designed 380 MWe nuclear power plant. The plant is equipped with a pressurized heavy-water reactor of the pressure vessel type (PHWR). ENACE has adopted new boundary design conditions and has embodied a number of special features to assure safety and economy in operation. The major shareholder in ENACE is the Argentine National Atomic Energy Commission (CNEA). ENACE is the architect-engineer for the NPP projects of the Argentine nuclear programme. It has a licensing agreement with Siemens AG's Kraftwerk Union AG, which is its minor shareholder. Under this agreement, ENACE has the right to use the Siemens-KWU PHWR technology, which was originally developed for the MZFR reactor in the Federal Republic of Germany, as well as their know-how in pressurized (light-) water reactors (PWRs) design and construction. The CNEA also has agreements with Atomic Energy of Canada Ltd. for the transfer of technology related to CANDU-type PTHWRs. The CNEA and ENACE have acquired considerable practical experience from the construction and operation of the 367 MWe Atucha I PHWR and the 648 MWe Embalse PTHWR; ENACE is currently building Argentina's third nuclear power plant, Atucha II, a 745 MWe PHWR. (author)

  7. Features material considerations polyester resins

    OpenAIRE

    Алексеева, Н. Н.; Маслош, О. В.; Островерхова, И. А.; Маслош, В. З.

    2011-01-01

    The features of drafting of financial balance of processes of receipt of polyester resins are considered. It is marked that practical output of polyesters always anymore theoretical. The method of drafting of financial balance of processes of receipt of polyesters is offered.

  8. Primordial features and Planck polarization

    CERN Document Server

    Hazra, Dhiraj Kumar; Smoot, George F; Starobinsky, Alexei A

    2016-01-01

    With the Planck 2015 Cosmic Microwave Background (CMB) temperature and polarization data, we examine possibility of having features in the primordial power spectrum (PPS). We revisit the Wiggly Whipped Inflation (WWI) framework and demonstrate how generation of some particular primordial features can improve the fit to Planck data. WWI potential allows the scalar field to transit from a steeper potential to a nearly flat potential through a discontinuity either in potential or in its derivatives. Using Planck 2015 data, we constrain the primordial features in the context of Wiggly Whipped Inflation and present the features that are supported both by temperature and polarization. WWI model provides upto $\\sim12-14$ improvement in $\\chi^2$ fit to the data with respect to the best fit power law model considering combined temperature and polarization data from Planck and B-mode polarization data from BICEP and Planck dust map. We use 2-4 extra parameters in the WWI model compared to the featureless strict slow ro...

  9. Feature Selection and Effective Classifiers.

    Science.gov (United States)

    Deogun, Jitender S.; Choubey, Suresh K.; Raghavan, Vijay V.; Sever, Hayri

    1998-01-01

    Develops and analyzes four algorithms for feature selection in the context of rough set methodology. Experimental results confirm the expected relationship between the time complexity of these algorithms and the classification accuracy of the resulting upper classifiers. When compared, results of upper classifiers perform better than lower…

  10. Universal features of multiplicity distributions

    International Nuclear Information System (INIS)

    Universal features of multiplicity distributions are studied and combinants, certain linear combinations of ratios of probabilities, are introduced. It is argued that they can be a useful tool in analyzing multiplicity distributions of hadrons emitted in high energy collisions and large scale structure of galaxy distributions

  11. Self-Advocacy. Feature Issue.

    Science.gov (United States)

    Hayden, Mary F., Ed.; Ward, Nancy, Ed.

    1994-01-01

    This feature issue newsletter looks at issues the self-advocacy movement is raising and the contributions it is making to the lives of people with developmental disabilities. Articles by self-advocates and advisors to self-advocacy organizations talk about their self-advocacy experiences, barriers to self-advocacy, and ways to support it. Primary…

  12. FCLib: The Feature Characterization Library.

    Energy Technology Data Exchange (ETDEWEB)

    Gentile, Ann C.; Doyle, Wendy S. K.; Kegelmeyer, W. Philip [Sandia National Laboratories, Livermore, CA; Ulmer, Craig D. [Sandia National Laboratories, Livermore, CA

    2008-11-01

    The Feature Characterization Library (FCLib) is a software library that simplifies the process of interrogating, analyzing, and understanding complex data sets generated by finite element applications. This document provides an overview of the library, a description of both the design philosophy and implementation of the library, and examples of how the library can be utilized to extract understanding from raw datasets.

  13. Goldenhar syndrome with unusual features

    Directory of Open Access Journals (Sweden)

    Mehta Bijal

    2008-01-01

    Full Text Available We report here the case of a 17 year-old girl with the classic signs of Goldenhar syndrome in the form of multiple accessory tragi, bilateral ocular dermoids, mandibular hypoplasia (micrognathia and cervical lordosis. She also had a high arched palate, gingival hypertrophy and malaligned teeth, features which are as yet unreported.

  14. MRI features of placenta accreta

    International Nuclear Information System (INIS)

    Objective: To investigate the MRI features of placenta accreta. Methods: From Apr 2009 to Jun 2011, 15 patients with placenta accrete received MRI examination. In them, placenta accreta was diagnosed based on clinical manifestations or postoperative histopathology. The MR features of placenta accreta in them (study group) were retrospectively analyzed and compared with those in 15 pregnant women without placenta accreta (control group) with Fisher exact test. Results: In the 15 patients with placenta accreta,uterine bulging and (or) a focal outward contour bulge was detected in 14 patients; heterogeneous signal intensity in the placenta was detected in 15 patients; dark intraplacental bands on T2-weighted images was detected in 15 patients; and increased subplacental vascularity was detected in 11 patients on T1- weighted images. In the study group, 14 patients showed at least three of the above four features, and in all of them uterine bulging and (or) a focal outward contour bulge, heterogeneous signal intensity in the placenta and dark intraplacental bands on T2-weighted images were detected; one patient showed heterogeneous signal intensity in the placenta, dark intraplacental bands on T2-weighted images and increased subplacental vascularity. In the control group,none patient had three of the above features.Uterine bulging and (or) a focal outward contour bulge, heterogeneous signal intensity in the placenta, dark intraplacental bands on T2-weighted images and increased subplacental vascularity were detected in 3, 6, 3 and 4 patients (P=0.000, 0.001, 0.000 and 0.027), respectively. Conclusions: The main MRI features of placenta accreta are uterine bulging and (or) a focal outward contour bulge, heterogeneous signal intensity in the placenta and dark intraplacental bands on T2-weighted images Besides, increased subplacental vascularity also could provide useful information for the diagnosis of placenta accreta. (authors)

  15. Features Based Text Similarity Detection

    CERN Document Server

    Kent, Chow Kok

    2010-01-01

    As the Internet help us cross cultural border by providing different information, plagiarism issue is bound to arise. As a result, plagiarism detection becomes more demanding in overcoming this issue. Different plagiarism detection tools have been developed based on various detection techniques. Nowadays, fingerprint matching technique plays an important role in those detection tools. However, in handling some large content articles, there are some weaknesses in fingerprint matching technique especially in space and time consumption issue. In this paper, we propose a new approach to detect plagiarism which integrates the use of fingerprint matching technique with four key features to assist in the detection process. These proposed features are capable to choose the main point or key sentence in the articles to be compared. Those selected sentence will be undergo the fingerprint matching process in order to detect the similarity between the sentences. Hence, time and space usage for the comparison process is r...

  16. Safety design features of MARS

    International Nuclear Information System (INIS)

    The Multipurpose Advanced Reactor, inherently Safe (MARS) is a 600 MW(th), single loop, pressurized light water reactor (PWR); its design was developed at the Department of Nuclear Engineering and Energy Conversion of the University of Rome 'La Sapienza'. The design was conceived in 1984 as a nuclear power plant able to conciliate well proven PWR nuclear technology with special safety features intended to facilitate plant location in the immediate proximity of highly populated areas in fast growing countries, to meet their energy and potable water needs. The plant has to guarantee a high and easily understandable safety level, has to be inexpensive and easy to build, operate, maintain and, eventually, repair; and has to ensure low production of radioactive wastes. The objective of the design effort was to find those (suitably supported by tests) plant solutions that could keep the features of a 'traditional' PWR in an essentially simplified design. A detailed description of the MARS design is presented

  17. Textural features for image classification

    Science.gov (United States)

    Haralick, R. M.; Dinstein, I.; Shanmugam, K.

    1973-01-01

    Description of some easily computable textural features based on gray-tone spatial dependances, and illustration of their application in category-identification tasks of three different kinds of image data - namely, photomicrographs of five kinds of sandstones, 1:20,000 panchromatic aerial photographs of eight land-use categories, and ERTS multispectral imagery containing several land-use categories. Two kinds of decision rules are used - one for which the decision regions are convex polyhedra (a piecewise-linear decision rule), and one for which the decision regions are rectangular parallelpipeds (a min-max decision rule). In each experiment the data set was divided into two parts, a training set and a test set. Test set identification accuracy is 89% for the photomicrographs, 82% for the aerial photographic imagery, and 83% for the satellite imagery. These results indicate that the easily computable textural features probably have a general applicability for a wide variety of image-classification applications.

  18. MODERN FEATURES OF FINANCIAL GLOBALIZATION

    OpenAIRE

    VALENTINA FETINIUC; IVAN LUCHIAN

    2013-01-01

    Nowadays, financial globalization as latest stage of financial internationalization process becomes to be the most discussed subject by economic scientists. It has many forms of manifestation and directions of development. One of the main features of financial globalization is increasing the role of the financial sector, linked with the expansion of the scope and complexity of foreign economic relations. The financial system has increasingly become a means of redistribution of financial resou...

  19. Modeling Autistic Features in Animals

    OpenAIRE

    Patterson, Paul H.

    2011-01-01

    A variety of features of autism can be simulated in rodents, including the core behavioral hallmarks of stereotyped and repetitive behaviors, and deficits in social interaction and communication. Other behaviors frequently found in autism spectrum disorders (ASD) such as neophobia, enhanced anxiety, abnormal pain sensitivity and eye blink conditioning, disturbed sleep patterns, seizures, and deficits in sensorimotor gating are also present in some of the animal models. Neuropathology and some...

  20. Rosacea: clinical features and treatment.

    Science.gov (United States)

    Lavers, Isabel

    2016-03-30

    Rosacea is a chronic inflammatory skin condition that predominantly affects the central face. It is characterised by a variable range of symptoms, including erythema, telangiectasia, papules, pustules and changes in skin texture. Rosacea may be transient, recurrent or persistent. Because it affects the most visible part of the body, the psychosocial effects of this condition can be significant. This article describes the features and management of the condition. PMID:27027198