175,425 research outputs found
The PANDA experiment: Antiproton physics at FAIR
No full textThe new Facility for Antiproton and Ion Research (FAIR), under
construction at the GSI laboratory at Darmstadt, in a few years will make available,
among different types of beams, even antiproton beams with unique features.
Through a High Energy Storage Ring (HESR) for antiprotons, an antiproton beam
will be available in a momentum range from 1.5 to 15 GeV/c, which will interact
on a hydrogen target. The products of the interaction, including hadronic systems
with strangeness and/or charm, will be detected with the PANDA magnetic spectrometer
(antiProton ANnihilation at DArmstadt), and the spectroscopic analysis
will allow a detailed investigation on a number of open problems of the hadronic
physics, as the quark confinement, the existence of non-conventional meson states
(so-called glueballs and hybrids), the structure of hadrons and of the strong interaction,
with particular attention to charmonium spectroscopy. An overview of the
scientific program of PANDA and the current status of the project will be presented
Observing giant panda habitat and forage abundance from space
No full textGiant pandas are obligate bamboo grazers. The bamboos favoured by giant pandas are typical forest understorey plants. Therefore, the availability and abundance of understorey bamboo is a key factor in determining the quantity and quality of giant panda food resources. However, there is little or no information about the spatial distribution or abundance of bamboo underneath the forest canopy, due to the limitations of traditional ground survey and remote sensing classification techniques. In this regard, the development of methods that can predict the understorey bamboo spatial distribution and cover abundance is critical for an improved understanding of the habitat, foraging behaviour and distribution of giant pandas, as well as facilitating an optimal conservation strategy for this endangered species. The objectives of this study were to develop innovative methods in remote sensing and GIS for estimating the giant panda habitat and forage abundance, and to explain the altitudinal migration and the spatial distribution of giant pandas in the fragmented forest landscape. It was concluded that 1) the vegetation indices derived from winter (leaf-off) satellite images can be successfully used to predict the distribution of evergreen understorey bamboo in a deciduous-dominated forest, 2) winter is the optimal season for quantifying the coverage of evergreen understorey bamboo in a mixed temperate forest, regardless of the classification methods used, 3) a higher mapping accuracy for understorey bamboo in a coniferous-dominated forest can be achieved by using an integrated neural network and expert system algorithm, 4) the altitudinal migration patterns of sympatric giant pandas and golden takins are related to satellite-derived plant phenology (a surrogate of food quality) and bamboo abundance (a surrogate of food quantity), 5) the driving force behind the seasonal vertical migration of giant pandas is the occurrence of bamboo shoots and the temperature variation along an altitudinal gradient, 6) the satellite-derived forest patches occupied by giant pandas were significantly larger and more contiguous than patches where giant pandas were not recorded, indicating that giant pandas appear sensitive to patch size and isolation effects associated with forest fragmentation. Overall, the study has been shown the potential of satellite remote sensing to map giant panda habitat and forage (i.e., understorey bamboo) abundance. The results are important for understanding the foraging behaviour and the spatial distribution of giant pandas, as well as the evaluation and modelling of giant panda habitat in order to guide decision-making on giant panda conservation. <br/
Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons
No full textTo study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitations, the physics of strange and charm quarks and nucleon structure studies will be performed with unprecedented accuracy thereby allowing high-precision tests of the strong interaction. The proposed PANDA detector is a state-of-the art internal target detector at the HESR at FAIR allowing the detection and identification of neutral and charged particles generated within the relevant angular and energy range. This report presents a summary of the physics accessible at PANDA and what performance can be expected
Informetrics of a Veteran Library Scientist and Academician Prof (Dr.) K. C. Panda
No full textThe study is a scientometric analysis of the magnitude of contributions of Prof. K. C. Panda, an eminent information scientist and academician of LIS. The paper highlights his 130 publications (120 articles and 10 books) during 1982-2011. The analysis of his 120 articles reveals that he has contributed 20 single papers and co-authored 80 papers with 45 collaborators that appeared 115 times yielding a greater collaboration coefficient of 0.79 which indicates his versatility of promoting research from the collaborative front. On an average, he has contributed 4 to 5 papers in a year during the stated period. Prof Panda is found to have contributed maximum (06) articles to Annals of Library and Information Studies
GPU-based Online Tracking for the PANDA Experiment
No full textThe PANDA experiment is a new hadron physics experiment currently being built at FAIR, Darmstadt (Germany). PANDA will study fixed-target collisions of antiprotons of 1 . 5 GeV/ c to 15 GeV/ c momentum with protons and nuclei at a rate of 20 million events per second. To distinguish between background and signal events, PANDA will utilize a novel data acquisition technique. The experiment uses a sophisticated software-based event filtering scheme involving the reconstruction of the whole incoming data stream in real- time to trigger its data taking. Algorithms for online track reconstruction are essential for this task. We investigate algorithms running on GPUs to solve PANDA’s real-time computing challenge
The WTP for property rights for the Giant Panda: can a charismatic species be an instrument for conservation of natural habitat?
No full textThe paper presents the results from a stated preference study to address issues concerning the potential for using flag-ship species, such as the Giant Panda, to purchase the property rights for the conservation of natural habitat. The study finds, first, that there is clear WTP for acquiring the property rights for panda habitat. The nature of this demand is found both convincing and logically coherent in that it is an increasing function of land
(at a diminishing rate). Secondly, the study decomposed the elicited values into genetic stock, animal welfare and implicit biodiversity values. The results show that the latter type of value consist of almost half of total value implying that the Panda is in fact a potential instrument for greater biodiversity conservation. Thirdly, the study shows that these implicit biodiversity values are dependent on the preservation of the flagship species itself, implying that the panda is not only a potential instrument for habitat conservation, but a necessary one. Finally, the extent to which the flagship approach can be capable of contributing to wider biodiversity conservation is discussed
changcheng1987/PANDA: The new release using VS2017
No full text<p>The development environment is changed from VS2013 to VS2017. So users need to install <a href="https://www.visualstudio.com/zh-hans/downloads/">Microsoft Visual C++ Redistributable for Visual Studio 2017</a> first before using PANDA.</p>
PANDA Challenge Analysis Code
No full textCode related to analysis of algorithms sourced through the PANDA challenge.
Main website: https://panda.grand-challenge.org/
Challenge platform: https://www.kaggle.com/c/prostate-cancer-grade-assessment
Study design: https://zenodo.org/record/3715938
Organizers and main study contributors: Wouter Bulten, Kimmo Kartasalo, Po-Hsuan Cameron Chen, Peter Ström, Hans Pinckaers, Kunal Nagpal, Yuannan Cai, David Steiner Hester van Boven, Robert Vink, Christina Hulsbergen-van de Kaa, Jeroen van der Laak, Hemamali Samaratunga, Brett Delahunt, Toyonori Tsuzuki, Tomi Häkkinen, Henrik Grönberg, Lars Egevad, Maggie Demkin, Sohier Dane, Lily Peng, Craig Mermel Pekka Ruusuvuori, Geert Litjens, Martin Eklun
PANDA - Supporting Distributed Programming in C++
No full textPANDA is a run-time package based on a very small operating system kernel which supports distributed applications written in C++. It provides powerful abstractions such as very efficient user-level threads, a uniform global address space, object and thread mobility, garbage collection, and persistent objects. The paper discusses the design ration- ales underlying the PANDA system. The fundamental features of PANDA are surveyed, and their implementation in the current prototype environment is outlined
The micro-vertex-detector of the PANDA experiment at Darmstadt
No full textThe "AntiProton ANnihilations at DArmstadt"-experiment, short PANDA, is one of the main experiments of the "Facility for Antiproton and Ion Research" (FAIR) which replaces and extends the existing GSI-facility at Darmstadt.The main physics goals at the beginning of the experiment in 2012 will be precision spectroscopy of charmonium states, an establishment of gluonic excitations, the search for modifications of meson properties in the nuclear medium and precision gamma-ray spectroscopy of single and double hypernuclei.For many of these physics goals an identification of D-mesons via the detection of a secondary vertex with a decay length in the order of 100 mu m is essential. Therefore, a special micro-vertex-detector (MVD) is foreseen which allows a precise tracking of all charged particles.Several different technology options from monolithic active pixels to hybrid pixel detectors are on the market. Unfortunately, none of these techniques fully meets the requirements of the PANDA experiment. Different technologies are compared with respect to the requirements of PANDA. In addition, a possible design of the MVD will be shown, which features a combination of hybrid pixel modules, whose layout might be adopted from ATLAS or other LHC experiments, for the inner layers and silicon strip detectors for the outer layers. (c) 2006 Elsevier B.V. All rights reserved
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