898 research outputs found

    Conservación del patrimonio cultural utilizando nuevos métodos de comunicación: la Pagoda de madera de Yingxian, China

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    [EN] Architectural landmarks that represent a culture’s identity are also sanctuaries for cultural heritage preservation. The tallest and oldest wooden multi-story structure in the world, the Yingxian Wooden Pagoda of China is tilting at an ongoing rate that requires an urgency to find solutions to revert the damage. To preserve the evolving humanistic and artistic understandings of ancient Chinese architecture, and to cultivate the scientific reasoning behind ancient Chinese carpentry, new media allows digital and computational methods to replace human users who once manually analyzed data and information from cultural sites and artifacts. This article will exemplify new media tools such as animation via 3D/2D modeling, 3D scanning and virtual reality photography to examine material evidence of the Yingxian Wooden Pagoda of China, and the role new media can assist in its fight to sustain its originality since 1056.Highlights: Examination, documentation, research and education of architectural heritage sites using new media methods.Integration of old archives and digital/computational software to represent the outstanding value of the oldest and tallest wooden skyscraper in the world.Use of 2D/3D modelling and virtual reality photography developing information to increase awareness on cultural heritage sites suffering wood deterioration.[ES] Los hitos arquitectónicos que representan la identidad de una cultura también son santuarios para la preservación del patrimonio cultural. La pagoda de madera de Yingxian en China, la estructura de madera de varios pisos más alta y antigua del mundo, se inclina a un ritmo constante que requiere encontrar solución es urgentes que reviertan el daño. Para preservar la evolución humanística y la comprensión artística de la antigua arquitectura china, y para cultivar el razonamiento científico detrás de la antigua carpintería china, los nuevos medios de comunicación permiten asistencia digital y computacional a los usuarios humanos que analizaban manualmente los datos y la información de los sitios culturales y los artefactos. La evidencia alcanzada a partir de las investigaciones previas unido a que los métodos de documentación clásicos requerían una comprensión sólida de la información realizada por el investigador, conlleva a que los registros se puedan describir como estáticos y anticuados, y que solo pueden ofrecer información tal y como se presenta. Los nuevos medios de comunicación ofrecen a la Pagoda de madera de Yingxian la última asistencia digital para encontrar descubrimientos que no eran posibles de llevar a cabo en investigaciones anteriores usando los métodos clásicos. La ayuda de programas y herramientas computacionales amplía la evidencia ocultada en los sitios patrimoniales. Este artículo ejemplificará las nuevas herramientas de comunicación, como la animación a través del modelado 3D/2D, el escaneado 3D y la fotografía de realidad virtual para examinar la evidencia material de la Pagoda de madera de Yingxian, y el papel que los nuevos medios pueden desempeñar en su lucha por mantener la originalidad de esta pagoda budista de madera desde 1056.Lai, DS.; Leung, AK.; Chan, D.; Ching, SH. (2019). Cultural heritage preservation using new media methods: Yingxian Wooden Pagoda, China. Virtual Archaeology Review. 10(21):103-115. https://doi.org/10.4995/var.2019.11071SWORD1031151021ACRL, (2015, February 9). Framework for Information Literacy for Higher Education. American Library Association. (p. 7-8)Ching, H.S. (2018, March). Turning a Service Learning Experience into a Model of Student Engagement: The Lighthouse Heritage Research Connections (LHRC) Project in Hong Kong. Elsevier BV: The Journal of Academic Librarianship, ISSN: 0099-1333, Vol: 44, Issue: 2, (p. 196-206).Eggers, R. (2017, January 9). Virtual Reality: The Future of Photography?. Retrieved from http://www.direporter.com/products/360o/virtual-reality-future-photography.Heidegger, M. (1971). 'The Thing'. In Poetry, Language, Thought, translated by A. Hofstafter. New York: Harper & Row.Hernandez, M. (2018, June 11). The Dougong: A nailless Chinese construction method. Retrieved from https://multimedia.scmp.com/culture/article/forbidden-city/architecture/chapter_02.html. South China Morning Post.Hou, W.D (侯卫东). (2016). Ying Xian Mu Ta Bao Hu Yan Jiu (应县木塔保护研究). Beijing, China: Beijing Shi : Wen Wu Chu Ban She (文物出版社).Jia, D.Y. (2015). Principles for the Conservation Heritage Sites in China. Beijing, China: Beijing Shi : Wen Wu Chu Ban She (文物出版社). (p. 100).Lai, D. (2018). (Director). The Preservation of the Yingxian Wooden Pagoda. Hong Kong: City University of Hong Kong. Retrieved from https://www.cityu.edu.hk/cityvod/video/play/LIB/Yingxian_Pagoda.aspxLeary, C. (n.d.). 360 VR Panoramic Photography. Retrieved from http://chrisleary.photography/360-vr-panoramic-photography/Manovich, L. (2001) The language of new media. Cambridge, Mass: MIT Press. (p. 36)Malpas, J. (2008) New Media. Cultural Heritage and the Sense of Place: Mapping the Conceptual Ground. International Journal of Heritage Studies. (p. 198)NOAA. (2018). Significant Earthquake Search - sorted by Data. Retrieved from https://www.ngdc.noaa.gov/nndc/struts/results?bt_0=1056&st_0=2018&type_17=EXACT&query_17=30&op_12=eq&v_12=CHINA&type_12=Or&query_14=None%20Selected&type_3=Like&query_3=Shanxi&st_1=&bt_2=&st_2=&bt_1=&bt_4=&st_4=&bt_5=&st_5=&bt_6=&st_6=&bt_7=&st_7=&bt_8=&st_8=&bt_9=&st_9=&bt_10=&st_10=&type_11=Exact&query_11=&type_16=Exact&query_16=&bt_18=&st_18=&ge_19=&le_19=&type_20=Like&query_20=&display_look=1&t=101650&s=1&submit_all=Search%20Database. National Centers for Environmental Information.Thompson, R.M. (2017). Firearm Identification in the Forensic Science Laboratory. 10.13140/RG.2.2.16250.59846. (p.7)Tian, W., Wang Y.R., 山西省应县县志办公室. (1984). 应州志. China: 山西省应县县志办公室重印.Tollefson, J. (2017, May 17). The wooden skyscrapers that could help to cool the planet. Retrieved from https://www.nature.com/news/the-wooden-skyscrapers-that-could-help-to-cool-the-planet-1.21992UNESCO World Heritage Centre. (2013). Wooden Structures of Liao Dynasty-Wooden Pagoda of Yingxian County, Main Hall of Fengguo Monastery of Yixian County. Retrieved from https://whc.unesco.org/en/tentativelists/5803

    The significance of sample mass in the analysis of steroid estrogens in sewage sludges and the derivation of partition coefficients in wastewaters

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    Optimization of an analytical method for determination of steroid estrogens, through minimizing sample size, resulted in recoveries >84%, with relative standard deviations <3% and demonstrated the significance of sample size on method performance. Limits of detection were 2.1–5.3 ng/g. Primary sludges had estrogen concentrations of up to one order of magnitude less than those found in biological sludges (up to 994 ng/g). However, partition coefficients were higher in primary sludges (except estriol), with the most hydrophobic compound (ethinylestradiol) exhibiting the highest Kp value, information which may be of value to those involved in modeling removal during wastewater treatment

    Search for Doubly-Charged Higgs Boson Production at HERA

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    A search for the single production of doubly-charged Higgs bosons H^{\pm \pm} in ep collisions is presented. The signal is searched for via the Higgs decays into a high mass pair of same charge leptons, one of them being an electron. The analysis uses up to 118 pb^{-1} of ep data collected by the H1 experiment at HERA. No evidence for doubly-charged Higgs production is observed and mass dependent upper limits are derived on the Yukawa couplings h_{el} of the Higgs boson to an electron-lepton pair. Assuming that the doubly-charged Higgs only decays into an electron and a muon via a coupling of electromagnetic strength h_{e \mu} = \sqrt{4 \pi \alpha_{em}} = 0.3, a lower limit of 141 GeV on the H^{\pm\pm} mass is obtained at the 95% confidence level. For a doubly-charged Higgs decaying only into an electron and a tau and a coupling h_{e\tau} = 0.3, masses below 112 GeV are ruled out.Comment: 15 pages, 3 figures, 1 tabl

    Measurement of D* Meson Cross Sections at HERA and Determination of the Gluon Density in the Proton using NLO QCD

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    With the H1 detector at the ep collider HERA, D* meson production cross sections have been measured in deep inelastic scattering with four-momentum transfers Q^2>2 GeV2 and in photoproduction at energies around W(gamma p)~ 88 GeV and 194 GeV. Next-to-Leading Order QCD calculations are found to describe the differential cross sections within theoretical and experimental uncertainties. Using these calculations, the NLO gluon momentum distribution in the proton, x_g g(x_g), has been extracted in the momentum fraction range 7.5x10^{-4}< x_g <4x10^{-2} at average scales mu^2 =25 to 50 GeV2. The gluon momentum fraction x_g has been obtained from the measured kinematics of the scattered electron and the D* meson in the final state. The results compare well with the gluon distribution obtained from the analysis of scaling violations of the proton structure function F_2.Comment: 27 pages, 9 figures, 2 tables, submitted to Nucl. Phys.

    System Size and Energy Dependence of Jet-Induced Hadron Pair Correlation Shapes in Cu+Cu and Au+Au Collisions at sqrt(s_NN) = 200 and 62.4 GeV

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    We present azimuthal angle correlations of intermediate transverse momentum (1-4 GeV/c) hadrons from {dijets} in Cu+Cu and Au+Au collisions at sqrt(s_NN) = 62.4 and 200 GeV. The away-side dijet induced azimuthal correlation is broadened, non-Gaussian, and peaked away from \Delta\phi=\pi in central and semi-central collisions in all the systems. The broadening and peak location are found to depend upon the number of participants in the collision, but not on the collision energy or beam nuclei. These results are consistent with sound or shock wave models, but pose challenges to Cherenkov gluon radiation models.Comment: 464 authors from 60 institutions, 6 pages, 3 figures, 2 tables. Submitted to Physical Review Letters. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.htm

    Jet Quenching and the p-bar >= pi- Anomaly at RHIC

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    PHENIX data on Au+Au at root(s)_= 130 AGeV suggest that p-bar yields may exceed pi- at high p_T > 2 GeV/c. We propose that jet quenching in central collisions suppresses the hard PQCD component of the spectra in central A+A reactions, thereby exposing a novel component of baryon dynamics that we attribute to (gluonic) baryon junctions. We predict that the observed p-bar >= pi- and the p > pi+ anomaly at p_T ~ 2 GeV/c is limited to a finite p_T window that decreases with increasing impact parameter.Comment: 5 pages, 4 figures, REVTeX, uses bbox.sty. Final version: references and figures updated. Added discussion on the p/pi+ rati

    Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 7 TeV pp collisions with the ATLAS detector

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    A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−1 of proton–proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results

    Jet size dependence of single jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector at the LHC

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    Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead-lead collisions at sqrt(s) = 2.76 TeV corresponding to an integrated luminosity of approximately 7 inverse microbarns, ATLAS has measured jets with a calorimeter over the pseudorapidity interval |eta| < 2.1 and over the transverse momentum range 38 < pT < 210 GeV. Jets were reconstructed using the anti-kt algorithm with values for the distance parameter that determines the nominal jet radius of R = 0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet "central-to-peripheral ratio," Rcp. Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. Rcp varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC.Comment: 15 pages plus author list (30 pages total), 8 figures, 2 tables, submitted to Physics Letters B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2011-02

    Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV

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    A search for a Higgs boson decaying into two photons is described. The analysis is performed using a dataset recorded by the CMS experiment at the LHC from pp collisions at a centre-of-mass energy of 7 TeV, which corresponds to an integrated luminosity of 4.8 inverse femtobarns. Limits are set on the cross section of the standard model Higgs boson decaying to two photons. The expected exclusion limit at 95% confidence level is between 1.4 and 2.4 times the standard model cross section in the mass range between 110 and 150 GeV. The analysis of the data excludes, at 95% confidence level, the standard model Higgs boson decaying into two photons in the mass range 128 to 132 GeV. The largest excess of events above the expected standard model background is observed for a Higgs boson mass hypothesis of 124 GeV with a local significance of 3.1 sigma. The global significance of observing an excess with a local significance greater than 3.1 sigma anywhere in the search range 110-150 GeV is estimated to be 1.8 sigma. More data are required to ascertain the origin of this excess.Comment: Submitted to Physics Letters
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