cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Reconstructing past flood events from geomorphological and historical data. The Giétro outburst flood in 1818
Creators: name: Lambiel, C.
name: Reynard, E.
name: Corboz, P.
name: Bardou, E.
name: Payot, C.
name: Deslarzes, B.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: The 16th of June 1818, the failure of the Giétro glacier in the Swiss Alps provoked an outburst flood that devastated the Bagnes valley, causing 34 deaths and major damages to buildings, road system, hydraulic infrastructures and crops. This disaster had a major impact on the economy of the valley and created a great movement of solidarity. It remains today a well-known historical natural disaster. In order to reconstruct the course of the wave and to map the flood, we used an interdisciplinary approach by crossing historical and geomorphological data. We first compiled and mapped the large number of historical data available in the local and state archives. These data were then completed by geomorphological observations made on the field and on numerical documents. The resulting map presents the spatial extent of the flood and water depths. This article shows the validity of interdisciplinary approaches for reconstructing past natural disasters.
Effects of Varying the Three-Body Molecular Hydrogen Formation Rate in Primordial Star Formation
Creators: name: Turk, Matthew J.
name: Clark, Paul
name: Glover, S. C. O.
name: Greif, T. H.
name: Abel, Tom
name: Klessen, Ralf
name: Bromm, Volker
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The transformation of atomic hydrogen to molecular hydrogen through three-body reactions is a crucial stage in the collapse of primordial, metal-free halos, where the first generation of stars (Population III stars) in the Universe are formed. However, in the published literature, the rate coefficient for this reaction is uncertain by nearly an order of magnitude. We report on the results of both adaptive mesh refinement (AMR) and smoothed particle hydrodynamics (SPH) simulations of the collapse of metal-free halos as a function of the value of this rate coefficient. For each simulation method, we have simulated a single halo three times, using three different values of the rate coefficient. We find that while variation between halo realizations may be greater than that caused by the three-body rate coefficient being used, both the accretion physics onto Population III protostars as well as the long-term stability of the disk and any potential fragmentation may depend strongly on this rate coefficient.
description: 29 pages, 7 figures; Accepted for publication in The Astrophysical Journal
A model study of quark number susceptibility at finite temperature beyond rainbow-ladder approximation
Creators: name: Jiang, Yu
name: Luo, Liu-Jun
name: Zong, Hong-Shi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we calculate the quark number susceptibility (QNS) of QCD at finite temperature under the rainbow-ladder and Ball-Chiu type truncation schemes of the Dyson-Schwinger approach. It is found that the difference between the result of the rainbow-ladder truncation and that of Ball-Chiu type truncation is small, which shows that the dressing effect of the quark-gluon vertex on the QNS at finite temperature is small. It is also found that at low temperature the quark number susceptibility is nearly zero and it increases sharply when the temperature approaches the chiral phase transition point. A comparison between the result in the present paper with those in the literature is made.
description: 17 pages, 6 figures
Stability of FG5/X gravimeters and its effect on the calibration of superconducting gravimeters
Creators: name: Pálinkáš, Vojtech
name: Křen, Petr
name: Vaľko, Miloš
name: Kostelecký, Jakub
name: Mašika, Pavel
Publisher: name: Zenodo
Year: 2023
Subjects: absolute gravimeter
gravity acceleration

description: We have developped a new measurement system for the FG5/FG5X gravimeters which could also run in parallel with the original measurement system of the FG5/FG5X gravimeters. Further, a new method has been developped to analyze the laterral motion of the freely-falling body by using the position sensitive detector. These improvements allowed us to determine hidden errors of the original system due to distortion of the interferometric signal, impedance mismatch, electric dispersion, verticality misalignemnt and the Coriolis effect. 
Except technological improvements, the measurement model of FG5/FG5X gravimeters has been improved by more precise description of the demodulation of the interferometric signal and by the extension of the model by two parameters related to the newly discovered spatial parasitic wave caused by the dropping mechanism of FG5/FG5X gravimeters.
All the improvements are having influence on the precion/stability and accuracy of absolute g-values. Based on the repeated absolute measurements during 5-years at the station Pecný that is equipped by a superconducting gravimeter, we are demonstrating how the errors non-standardly applied to absolute g-values, are affecting the measurement stability and the accuracy of determined calibration factors of the superconducting gravimeters. 
description: We would like to acknowledge the financial support from the project "Research related with International Gravity Reference System" funded by the Ministry of Education, Youth and Sports of the Czech Republic (MŠMT) as grant no. LTT19008.
The structured environments of embedded star-forming cores. PACS and SPIRE mapping of the enigmatic outflow source UYSO 1
Creators: name: Linz, H.
name: Krause, O.
name: Beuther, H.
name: Henning, Th.
name: Klein, R.
name: Nielbock, M.
name: Stecklum, B.
name: Steinacker, J.
name: Stutz, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The intermediate-mass star-forming core UYSO 1 has previously been found to exhibit intriguing features. While deeply embedded and previously only identified by means of its (sub-)millimeter emission, it drives two powerful, dynamically young, molecular outflows. Although the process of star formation has obviously started, the chemical composition is still pristine. We present Herschel PACS and SPIRE continuum data of this presumably very young region. The now complete coverage of the spectral energy peak allows us to precisely constrain the elevated temperature of 26 - 28 K for the main bulge of gas associated with UYSO1, which is located at the interface between the hot HII region Sh 2-297 and the cold dark nebula LDN 1657A. Furthermore, the data identify cooler compact far-infrared sources of just a few solar masses, hidden in this neighbouring dark cloud.
description: accepted contribution for the forthcoming Herschel Special Issue of A&A, 5 pages (will appear as 4-page letter in the journal), 6 figure files
Glacial geomorphology of the High Gredos Massif: Gredos and Pinar valleys (Iberian Central System, Spain)
Creators: name: Carrasco, Rosa M.
name: Soteres, Rodrigo L.
name: Pedraza, Javier
name: Fernández-Lozano, Javier
name: Turu, Valentí
name: López-Sáez, José Antonio
name: Karampaglidis, Theodoros
name: Granja-Bruña, José Luis
name: Muñoz-Martín, Alfoso
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer

description: We present a detailed geomorphological map of the landform assemblages originated by the two major paleoglaciers of the Sierra de Gredos mountain range in the Spanish Iberian Central System. Based on previous works, our map focused on the features formed by Gredos and Pinar paleoglaciers during the last glaciation and subsequent glacial events. Based on a remote sensing analysis and exhaustive field surveys, we identified with great accuracy the local distribution of glacial, periglacial, mass movement, structural, fluvial, and lacustrine features. We recognized three main glacial geomorphological formations representing: (i) the maximum glacial extension reached (peripheral deposits); (ii) the culmination of glacial conditions (principal moraines) and (iii) the local glacial withdrawal (internal deposits). Our map offers a renewed spatial framework on which to conduct higher-resolution glacial chronologies, especially of Late Glacial and Holocene glacial activity, providing key information for performing future paleoclimatic reconstructions of the northern hemisphere mid-latitudes.
Finite Horizon Decision Timing with Partially Observable Poisson Processes
Creators: name: Ludkovski, Michael
name: Sezer, Semih
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary 62L10, Secondary 62L15, 62C10, 60G40

description: We study decision timing problems on finite horizon with Poissonian information arrivals. In our model, a decision maker wishes to optimally time her action in order to maximize her expected reward. The reward depends on an unobservable Markovian environment, and information about the environment is collected through a (compound) Poisson observation process. Examples of such systems arise in investment timing, reliability theory, Bayesian regime detection and technology adoption models. We solve the problem by studying an optimal stopping problem for a piecewise-deterministic process which gives the posterior likelihoods of the unobservable environment. Our method lends itself to simple numerical implementation and we present several illustrative numerical examples.
description: 40 pages, 7 figures. Originally a technical report at U of Michigan from 2008
Major chlorogenic acid isomers present in coffee are modulators of redox biology and inflammation in Caco-2 cells
Creators: name: Liang, Ningjian
Publisher: name: University of British Columbia
Year: 2018

description: Chlorogenic acid (CGA) is a general term used to describe the most abundant group of phenolic acids in coffee. 3-CQA, 4-CQA, 5-CQA, 3,4-diCQA, 3,5-diCQA, and 4,5-diCQA are major CGAs in coffee; but only 5-CQA has been thoroughly studied. The first objective of this thesis was to study interactions between major CGA isomers and chemical changes in coffee brew that affect antioxidant activity noted for coffee. The second overall objective was to study the potential of these six major CGA isomers in modulating oxidative stress and inflammation using a human intestinal Caco-2 cell line. The findings from Chapter 2 suggested that the other five CGA isomers (4-CQA, 5-CQA, 3,4-diCQA, 3,5-diCQA, and 4,5-diCQA) together account for more than 50% of the total CGA in coffee and contributed to the antioxidant activity of coffee brew. Chapter 3 and 4 addressed the research question of whether these major CGA isomers have a modulating effect on oxidative stress and inflammation in human intestinal Caco-2 cell line. Caco-2 cells were first incubated with, or without, individual CGA isomers, followed by a phorbol 12-myristate 13-acetate plus human interferon gamma challenge. Biomarkers of oxidative stress (intracellular ROS and GSH/GSSG) and inflammation (IL-8) were measured. The results demonstrated that CGA isomers scavenged intracellular ROS in inflamed Caco-2 cells, mitigated the drop in GSH/GSSG ratio and attenuated IL-8 secretion. Dicaffeoylquinic acids (3,4-diCQA, 3,5-diCQA, and 4,5-diCQA) had a relatively stronger capacity to evoke protection compared to caffeoylquinic acids (3-CQA, 4-CQA, and 5-CQA). To elucidate the possible mechanism underlying these actions, the effects of CGA isomers on the nuclear factor kappa B signaling pathway, mitogen-activated protein kinase cascades, and nuclear factor (erythroid-derived 2)-like 2 signaling pathway were further investigated. In conclusion, structural differences in six CGA isomers were found to correspond to differences in antioxidant and anti-inflammation activities. CGA isomers attenuate oxidative stress and inflammation in Caco-2 cells by triggering changes in redox biology parameters, lead to an up-regulation of nuclear factor kappa B signaling at very early stage, mitigation of p38 phosphorylation and up-regulation of antioxidant genes in an intermediate stage, and activation of Nrf2 signaling at a much later stage.
TARBIYA FANI O'QITUVCHILARINING METODIK KOMPETENTLIGINI RIVOJLANTIRISH TEXNOLOGIYASI
Creators: name: QDPI Fakultetlararo pedagogika va psixologiya kafedrasi o'qituvchisi Usmonova Xafiza Qodirjonovna
Publisher: name: Zenodo
Year: 2023

description: Faqat ma'rifat insonni kamolga,jamiyatni taraqqiyotga yetaklaydi.Shu sabali mamlakatimizda ta'lim sohasidagi davlat siyosati uzluksiz ta'lim prinsipiga asoslangan ,bola tug'ulganidan boshlab ,30 yoshgacha bo'lgan davrda uni har tomonlama qo'llab quvvatlaydigan ,hayotgamunosib o'rin topishi uchun ko'mak beradigan ,yahlit va uzluksiz tizim yaratishga alohida e'tibor qaratilmoqda.
Kalit o'zlar.Kompetentlik,shaxs,pedagogshaxsi,talab,modernizatsiya,kasbiy kompetentlik,jarayon,taraqqiyot,mutaxassis
Geomorphology of the Anversa degli Abruzzi badlands area (Central Apennines, Italy)
Creators: name: D’Intino, Jacopo
name: Buccolini, Marcello
name: Di Nardo, Elena
name: Esposito, Gianluca
name: Miccadei, Enrico
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: This work presents the geomorphology of the Anversa degli Abruzzi badlands (also called calanchi, a typical italian landform) area, located in the Abruzzo Region (Central Apennines, Italy). The map is the result of morphometric and geomorphological analyses, performed at the badland scale, and incorporates three main sections including orography and hydrography, main geomorphological map, and multi-temporal photogeological analysis. The aim of this work is to provide the basis for the recognition of geomorphological features linked to the fluvial environment. Specifically, the study is focused on the Anversa degli Abruzzi calanchi system and it contributes to improving the understanding of this landscape evaluating the geomorphological processes that control its morphometric features and its spatial and temporal evolution.
LIME - a flexible, non-LTE line excitation and radiation transfer method for millimeter and far-infrared wavelengths
Creators: name: Brinch, C.
name: Hogerheijde, M. R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a new code for solving the molecular and atomic excitation and radiation transfer problem in a molecular gas and predicting emergent spectra. This code works in arbitrary three dimensional geometry using unstructured Delaunay latices for the transport of photons. Various physical models can be used as input, ranging from analytical descriptions over tabulated models to SPH simulations. To generate the Delaunay grid we sample the input model randomly, but weigh the sample probability with the molecular density and other parameters, and thereby we obtain an average grid point separation that scales with the local opacity. Our code does photon very efficiently so that the slow convergence of opaque models becomes traceable. When convergence between the level populations, the radiation field, and the point separation has been obtained, the grid is ray-traced to produced images that can readily be compared to observations. Because of the high dynamic range in scales that can be resolved using this type of grid, our code is particularly well suited for modeling of ALMA data. Our code can furthermore deal with overlapping lines of multiple molecular and atomic species.
description: 13 pages, 12 figures, Accepted by A&A on 06/08/2010
Concordance with the 2016 RCPT clinical practice guideline on pharmacologic therapy of dyslipidemia for atherosclerotic cardiovascular disease prevention
Creators: name: Pornpawee Rueasrijan
Publisher: name: Faculty of Pharmaceutical Sciences KKU, MSU, UBU
Year: 2021
Subjects: primary prevention, secondary prevention, lipid lowering drugs, LDL-C target, clinical practice guidelines, atherosclerotic cardiovascular disease

description: Isan Journal ofPharmaceutical Sciences, 17, 1, 52-67
Determination of Phenolic Compounds, Proteins and Antioxidant activity in Rice Water Fraction Extracted from Phayaleumkang Glutinous Rice
Creators: name: Paweena Sanwiriyamongkol
Publisher: name: Faculty of Pharmaceutical Sciences KKU, MSU, UBU
Year: 2021
Subjects: Phayalumkang glutinous rice, Phenolic compound, Protein, Antioxidant, Stability

description: Isan Journal ofPharmaceutical Sciences, 17, 1, 68-79
Interpreting Dark Matter Direct Detection Independently of the Local Velocity and Density Distribution
Creators: name: Fox, Patrick J.
name: Kribs, Graham D.
name: Tait, Tim M. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We demonstrate precisely what particle physics information can be extracted from a single direct detection observation of dark matter while making absolutely no assumptions about the local velocity distribution and local density of dark matter. Our central conclusions follow from a very simple observation: the velocity distribution of dark matter is positive definite, f(v) >= 0. We demonstrate the utility of this result in several ways. First, we show a falling deconvoluted recoil spectrum (deconvoluted of the nuclear form factor), such as from ordinary elastic scattering, can be "mocked up" by any mass of dark matter above a kinematic minimum. As an example, we show that dark matter much heavier than previously considered can explain the CoGeNT excess. Specifically, m_chi < m_Ge} can be in just as good agreement as light dark matter, while m_χ> m_Ge depends on understanding the sensitivity of Xenon to dark matter at very low recoil energies, E_R ~ 6 keVnr. Second, we show that any rise in the deconvoluted recoil spectrum represents distinct particle physics information that cannot be faked by an arbitrary f(v). As examples of resulting non-trivial particle physics, we show that inelastic dark matter and dark matter with a form factor can both yield such a rise.
Bottom-up coarse-graining : theory, implementation, application
Creators: name: Tran, Hoang
Publisher: name: University of British Columbia
Year: 2018

description: Molecular dynamics simulations at the atomic scale are a powerful tool to study the structure and dynamics of biological systems. However, important processes, such as protein folding, are still too computationally expensive to be investigated with atomistic simulations. In these situations, different coarse-grained force fields have been developed to appropriately reproduce the static structure of the systems. These strategies can range from specially designed, ad hoc approaches to transferrable, bottom-up plans. Nevertheless, because of the reduction in number of degrees of freedom, the obtained dynamics typically suffer from inaccuracies, which may be not adjustable using trivial scaling. To correctly reintroduce these properties, one can apply the Mori-Zwanzig formalism, essentially injecting the memory effects into these coarse-graining schemes. In practice, because of the difficulty in algorithm designing and the limit on computing power, the memory is often assumed to be short-term, and therefore can be approximated as a delta function. Recently, some investigations have been done successfully on simple models with significantly long memory. This work aims to extend these successes on systems with more complex topology. In particular, we applied the Mori-Zwanzig formalism to the system of polyethylene chains. Using GROMACS united atom model, molecular dynamics simulation was performed to obtain the coarse-grained force field and the memory kernel of the nonbonded interaction. These elements allowed for a successful coarse-grained simulation, which captured both static and dynamical structures of the reference system.
Renormalization group evolution of neutrino masses and mixing in seesaw models: A review
Creators: name: Ray, Shamayita
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider different extensions of the standard model which can give rise to the small active neutrino masses through seesaw mechanisms, and their mixing. These tiny neutrino masses are generated at some high energy scale by the heavy seesaw fields which then get sequentially decoupled to give an effective dimension-5 operator. The renormalization group evolution of the masses and the mixing parameters of the three active neutrinos in the high energy as well as the low energy effective theory is reviewed in this article.
description: 54 pages. Invited review submitted to IJMPA
Volcanic evolution of the Somma-Vesuvius Complex (Italy)
Creators: name: Sbrana, Alessandro
name: Cioni, Raffaello
name: Marianelli, Paola
name: Sulpizio, Roberto
name: Andronico, Daniele
name: Pasquini, Giuseppe
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: A volcanological map of the active Somma-Vesuvius volcano is presented at the 1:20,000 scale. The map is based on 1:5000 ﬁeld mapping carried out during the Italian CARG project. Geological data are represented on a digital terrain model of the volcano. This allows a better visualisation of the main morphological, volcanic, and geological features. The legend is organised in four different panels, which depict the activity of the volcano and caldera development. The geological survey is based on recognition and description of lithostratigraphic units. The geological map highlights the volcanic evolution of the Somma-Vesuvius volcano, and it is propaedeutic for further studies aimed at improving the scientific knowledge and the volcanic hazard assessment of this world-famous volcano.
Detection of bottom ferromagnetic electrode oxidation in magnetic tunnel junctions by magnetometry measurements
Creators: name: Chen, Wei
name: Nam, Dao N. H.
name: Lu, Jiwei
name: Wolf, Stuart A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Surface oxidation of the bottom ferromagnetic (FM) electrode, one of the major detrimental factors to the performance of a Magnetic Tunnel Junction (MTJ), is difficult to avoid during the fabrication process of the MTJ's tunnel barrier. Since Co rich alloys are commonly used for the FM electrodes in MTJs, over-oxidation of the tunnel barrier results in the formation of a CoO antiferromagnetic (AF) interface layer which couples with the bottom FM electrode to form a typical AF/FM exchange bias (EB) system. In this work, surface oxidation of the CoFe and CoFeB bottom electrodes was detected via magnetometry measurements of exchange-bias characterizations including the EB field, training effect, uncompensated spin density, and coercivity. Variations of these parameters were found to be related to the surface oxidation of the bottom electrode, among them the change of coercivity is most sensitive. Annealed samples show evidence for an oxygen migration back to the MgO tunnel barrier by annealing.
description: 5 pages, 4 figues, submitted to J. Appl. Phys
Snow avalanche susceptibility of the Circo de Gredos (Iberian Central System, Spain)
Creators: name: Soteres, Rodrigo L.
name: Pedraza, Javier
name: Carrasco, Rosa M.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Neuroscience
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: We present a detailed snow avalanche susceptibility map at scale 1:20,000 of the Circo de Gredos in the Sierra de Gredos (Iberian Central System, Spain). This cirque-shaped landscape is one of the most popular spots for winter sports in the region. However, no snow avalanche activity assessment has been conducted to date. We have, therefore, produced a snow avalanche susceptibility map based on aerial and satellite imagery, newspaper reviews and field work, including avalanche features recognition and interviews with frequent backcountry users. We extracted the spatial distribution of necessary and enhancer factors for triggering slab, wet and loose snow avalanches from a digital elevation model. Finally, calculations to evaluate each snow avalanche type susceptibility were performed using a Geographical Information System. By combining our map collection, we concluded that most of the area in the Circo de Gredos is highly susceptible to snow avalanches, especially slab and wet snow types.
Surficial geology of Pictured Rocks National Lakeshore, Michigan, USA
Creators: name: VanderMeer, Sarah M.
name: Kehew, Alan E.
name: Gillespie, Robb
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology

description: Pictured Rocks National Lakeshore is located in the Upper Peninsula of Michigan along the southern shore of Lake Superior. The park spans approximately 300 km2 and is almost fully incorporated within the ten 7.5-minute quadrangles presented in this new, detailed surficial geology map. The western quadrangles are mainly characterized by thin accumulations of undifferentiated Quaternary sediment above shallow bedrock while the eastern quadrangles mostly show thick accumulations of various glacial outwash units. This map was produced by integrating field data with a high-resolution LiDAR digital elevation model and associated hillshade, aerial imagery, and passive seismic data. The high-resolution elevation information was essential to differentiate between outwash units, post-glacial sand accumulations, and interpreting subtle glacial features that would have otherwise remained unrecognized. This new map provides fundamental information to help decipher the glacial history of this region to enhance our understanding of how this popular landscape developed.
Spatially Resolved Star Formation History Along the Disk of M82 Using Multi-Band Photometric Data
Creators: name: Rodriguez-Merino, L. H.
name: Rosa-Gonzalez, D.
name: Mayya, Y. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results on the star formation history and extinction in the disk of M82 over spatial scales of 10" (~180 pc). Multi-band photometric data covering from the far ultraviolet to the near infrared bands were fitted to a grid of synthetic spectral energy distributions. We obtained distribution functions of age and extinction for each of the 117 apertures analyzed, taking into account observational errors through Monte-Carlo simulations. These distribution functions were fitted with gaussian functions to obtain the mean ages and extinctions along with errors on them. The analyzed zones include the high surface brightness complexes defined by O'Connell & Mangano (1978). We found that these complexes share the same star formation history and extinction as the field stellar populations in the disk. There is an indication that the stellar populations are marginally older at the outer disk (450 Myr at ~3 kpc) as compared to the inner disk (100 Myr at 0.5 kpc). For the nuclear regions (radius less than 500 pc), we obtained an age of less than 10 Myr. The results obtained in this work are consistent with the idea that the 0.5-3 kpc part of the disk of M82 formed around 90% of the stellar mass in a star-forming episode that started around 450 Myr ago lasting for about 350 Myr. We found that field stars are the major contributors to the flux over the spatial scales analyzed in this study, with stellar cluster contribution being 7% in the nucleus and 0.7% in the disk.
description: 19 pages, 14 figures. Accepted for publication in The Astrophysical Journal
Reversible Data Hiding Based on Two-level HDWT Coefficient Histograms
Creators: name: Luo, Xu-Ren
name: Lin, Chen-Hui Jerry
name: Yin, Te-Lung
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In recent years, reversible data hiding has attracted much more attention than before. Reversibility signifies that the original media can be recovered without any loss from the marked media after extracting the embedded message. This paper presents a new method that adopts two-level wavelet transform and exploits the feature of large wavelet coefficient variance to achieve the goal of high capacity with imperceptibility. Our method differs from those of previous ones in which the wavelet coefficients histogram not gray-level histogram is manipulated. Besides, clever shifting rules are introduced into histogram to avoid the decimal problem in pixel values after recovery to achieve reversibility. With small alteration of the wavelet coefficients in the embedding process, and therefore low visual distortion is obtained in the marked image. In addition, an important feature of our design is that the use of threshold is much different from previous studies. The results indicate that our design is superior to many other state-of-the-art reversible data hiding schemes.
description: 16 pages, 8 figures
Helena Koppelman Edwards, Wife of Capt. William L. Edwards
Creators: name: Springs Historical Society
Publisher: name: Unknown
Year: 0
Subjects: East Hampton
Springs
Edwards Family
Photographs
Portraits
Women

description: This is a portrait of Helena Koppelman Edwards, wife of Capt. William "Billy" Lewis Edwards.
description: This material was lent to the Long Island Collection by the Springs Historical Society Library for digitization purposes.
Geomorphological analysis using small unmanned aerial vehicles and submeter GNSS (Gara Soultana butte, High Plateaus Basin, Eastern Morocco)
Creators: name: Benito-Calvo, A.
name: Haddoumi, H.
name: Aouraghe, H.
name: Oujaa, A.
name: Chacón, M.G.
name: Sala-Ramos, R.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The High Plateaus Basin is an important region to understand landscape evolution and human occupation in North Africa during the Quaternary. We focused on the Gara Soultana area, applying Unmanned Aerial Vehicles, photogrammetry and a submeter Global Navigation Satellite System, for large scale geomorphological mapping. This work in the upper Moulouya catchment has allowed us to define the landform sequence. Conglomerate platforms previously considered to be fluvial terraces, are interpreted here as exhumed bedrock layers of the Plio-Pleistocene stacked series. The El Haï river incision consists of a first phase, represented only by the exhumation of Gara Soultana butte, and a second phase when five strath terraces developed from +20-22 m to the thalweg, formed since the Middle Pleistocene. Holocene terraces could be associated with brief aggradation phases in the lower Moulouya catchment due to rapid climate changes. Fluvial incision led to the formation of mantled pediments and talus flatirons.
31967: A medical student without a hospital
Creators: name: Project, Lockdown2020 and Beyond
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 479999
subject: Other language, communication and culture not elsewhere classified

description: A typical day now, mid-Covid, is simply the total opposite of clinical rotations. Now I usually wake up whenever suits, sans alarm, and rather than quickly getting ready and scurrying to the John Radcliffe, Warneford, or Churchill for a long day, I simply migrate down to the garden and enjoy a leisurely breakfast in the (often present) sunshine. Initially it was difficult to fill the days with something new - our student world was changed rather suddenly and adapting was pretty surreal - but now I'm delving into languages that haven't been studied for a good while, actually getting through those books that previously had been one chapter a week - if I wasn't too tired or busy, utilising the comforts of a well-stocked kitchen with regular cooking and baking (i.e., using up the household supply of scarce flour), exercising, spending time with family, and generally relaxing - on the premise that this may be the last period of relative serenity before work as a doctor begins, and should thus be appreciated and used wisely. Had the pandemic happened a year later, things would be very different. Medicine hasn't left the picture entirely, however - despite unscuessful attempts to help at local GPs (they're too quiet to need any, fortunately) I'm doing a little work each day, and naturally everything Covid is ever-present, coming in waves of headlines and academic papers. The most surreal (and frustrating, at times) aspect is seeing and hearing from colleagues and other health workers who are still on the front line, now veiled in PPE - I'll be watching a news report with family, say, and some beeps will go off in the background - not at all unfamiliar, just a blood pressure monitor having done its job. Much of the equipment is recognisable, the protocols, what that little symbol scribbled on the whiteboard means. Yet I'm here, sitting on a couch over a hundred miles away - just watching, powerless to help, along with everyone else.
The seeds of star formation in the filamentary infrared-dark cloud G011.11-0.12
Creators: name: Henning, Thomas
name: Linz, Hendrik
name: Krause, Oliver
name: Ragan, Sarah
name: Beuther, Henrik
name: Launhardt, Ralf
name: Nielbock, Markus
name: Vasyunina, Tatiana
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Infrared-dark clouds (IRDCs) are the precursors to massive stars and stellar clusters. G011.11-0.12 is a well-studied filamentary IRDC, though, to date, the absence of far-infrared data with sufficient spatial resolution has limited the understanding of the structure and star-formation activity. We use Herschel to study the embedded population of young pre- and protostellar cores in this IRDC. We examine the cloud structure, which appears in absorption at short wavelength and in emission at longer wavelength. We derive the properties of the massive cores from the spectral energy distributions of bright far-infrared point sources detected with the PACS instrument aboard Herschel. We report on the detection and characterization of pre- and protostellar cores in a massive filamentary infrared-dark cloud G011.11-0.12 using PACS. We characterize 18 cores directly associated with the filament, two of which have masses over 50 Msun, making them the best candidates to become massive stars in G011.11-0.12. These cores are likely at various stages of protostar formation, showing elevated temperature ( ~ 22 K) with respect to the ambient gas reservoir. The core masses ( ~ 24 Msun) are small compared to that in the cold filament. The mean core separation is 0.9 pc, well in excess of the Jeans length in the filament. We confirm that star formation in IRDCs is underway and diverse, and IRDCs have the capability of forming massive stars and clusters.
description: Accepted for publication in the Herschel special issue of Astronomy & Astrophysics
Culture and language ideology in Chinese foreign language textbooks : a thematic analysis
Creators: name: Bewley, Fiona
Publisher: name: University of British Columbia
Year: 2018

description: Culture is central to a language learner’s trajectory to develop communicative competence. Textbooks are often the first point of contact to a foreign language (FL) learner’s target culture. It's the textbook’s responsibility to authentically help learners in their construction of cultural knowledge. With this responsibility comes a significant amount of power. For instance, many foreign language materials choose to reinforce inequality and nationalist cultural and linguistic ideologies. This thesis explores the language ideology behind the cultural representations in two popular series of Chinese foreign language (CFL) textbooks published in China: New Practical Chinese Reader and America: Integrated Chinese. Although many studies explore cultural representations in English FL textbooks, there is a scarcity of comparable studies focusing on CFL textbooks. Borne from my own experience, I often found CFL materials to be culturally reductive and outdated. A handful of scholars are challenging the cultural aspects and ideological orientations of CFL textbooks, and this thesis adds to that body of research. By way of thematic analysis, I chose a semiotic framework to connect pictures and texts about culture themes and analyze the latent ideologies of the textbook series. The prominent themes I found in the series published in the U.S. (Liu,Y. 2010) relate to basic language functions. Although the textbook employed traditional approaches to grammar sections and pattern drills (Zhou, 2011, p. 144), overall its approach attempts to be more interactive and communicative than the series published in China. Cultural themes in the materials published in China illustrate traditional learning styles and emphasize traditional culture. Both series reduce culture to nationalist ideology, which feeds into native-speaker bias, and are outdated in their representation of technology in FL use. I conclude that textbook authors must shift the focus of textbooks onto the learner’s needs. Additionally, teachers and students must be aware of the types of representations they come across. They must employ open and communicative methods to deconstruct them. Finally, textbooks authors must match learners’ realities through more use of technology, more open-ended communicative style exercises, and instead of idealizing native speakers, they should promote the goal of reaching communicative competence.
On prescribed change of profile for solutions of parabolic equations
Creators: name: Dokuchaev, Nikolai
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K20, 35Q99, 32A35

description: Parabolic equations with homogeneous Dirichlet conditions on the boundary are studied in a setting where the solutions are required to have a prescribed change of the profile in fixed time, instead of a Cauchy condition. It is shown that this problem is well-posed in L_2-setting. Existence and regularity results are established, as well as an analog of the maximum principle.
Coherent electron transport by adiabatic passage in an imperfect donor chain
Creators: name: Rahman, Rajib
name: Muller, Richard P.
name: Levy, James E.
name: Carroll, Malcolm S.
name: Klimeck, Gerhard
name: Greentree, Andrew D.
name: Hollenberg, Lloyd C. L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Coherent Tunneling Adiabatic Passage (CTAP) has been proposed as a long-range physical qubit transport mechanism in solid-state quantum computing architectures. Although the mechanism can be implemented in either a chain of quantum dots or donors, a 1D chain of donors in Si is of particular interest due to the natural confining potential of donors that can in principle help reduce the gate densities in solid-state quantum computing architectures. Using detailed atomistic modeling, we investigate CTAP in a more realistic triple donor system in the presence of inevitable fabrication imperfections. In particular, we investigate how an adiabatic pathway for CTAP is affected by donor misplacements, and propose schemes to correct for such errors. We also investigate the sensitivity of the adiabatic path to gate voltage fluctuations. The tight-binding based atomistic treatment of straggle used here may benefit understanding of other donor nanostructures, such as donor-based charge and spin qubits. Finally, we derive an effective 3 \times 3 model of CTAP that accurately resembles the voltage tuned lowest energy states of the multi-million atom tight-binding simulations, and provides a translation between intensive atomistic Hamiltonians and simplified effective Hamiltonians while retaining the relevant atomic-scale information. This method can help characterize multi-donor experimental structures quickly and accurately even in the presence of imperfections, overcoming some of the numeric intractabilities of finding optimal eigenstates for non-ideal donor placements.
description: 9 pages, 8 figures
Geology of the Montigiu Nieddu metamorphic basement, NE Sardinia (Italy)
Creators: name: Cruciani, Gabriele
name: Franceschelli, Marcello
name: Musumeci, Giovanni
name: Scodina, Massimo
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Inorganic Chemistry

description: A geological map at 1:10,000 scale is presented that shows the distribution of the metamorphic rock units in the area of Montigiu (Mt.) Nieddu (NE Sardinia). These units belong to the High-Grade Metamorphic Complex in the Inner Zone of the Variscan chain of Sardinia. The rocks include different types of migmatite, amphibolite, and retrogressed eclogites. The geological map and cross section show the complex tectonic and metamorphic setting of the area, whereas the metamorphic assemblages and deformation framework represent a valuable tool for the reconstruction of the P-T metamorphic evolution for the crustal sectors involved in the Variscan orogeny. The metamorphic rock units reported in the map derived from the lower and upper continental plates involved in the Variscan collision and were tectonically juxtaposed during the early Carboniferous exhumation stage.
Orbital Magnetism in Ensembles of Ballistic Billiards
Creators: name: Ullmo, Denis
name: Richter, Klaus
name: Jalabert, Rodolfo A.
Publisher: name: Universität Regensburg
Year: 1995
Subjects: subject: 530 Physik

description: We calculate the magnetic response of ensembles of small two-dimensional structures at finite temperatures. Using semiclassical methods and numerical calculation we demonstrate that only short classical trajectories are relevant. The magnetic susceptibility is enhanced in regular systems, where these trajectories appear in families. For ensembles of squares we obtain a large paramagnetic susceptibility, in good agreement with recent measurements in the ballistic regime.
Multimodal human brain connectivity analysis based on graph theory
Creators: name: Wang, Chendi
Publisher: name: University of British Columbia
Year: 2018

description: Billions of people worldwide are affected by neurological disorders. Recent studies indicate that many neurological disorders can be described as dysconnectivity syndromes, and associated with changes in the brain networks prior to the development of clinical symptoms. This thesis presents contributions towards improving brain connectivity analysis based on graph theory representation of the human brain network. We propose novel multimodal techniques to analyze brain imaging data to better understand its structure, function and connectivity, i.e., brain connectomics. Our first contribution is towards improving parcellation, \ie brain network node definition, in terms of reproducibility, functional homogeneity, leftout data likelihood and overlaps with cytoarchitecture, by utilizing the neighbourhood information and multi-modality integration techniques. Specifically, we embed neighborhood connectivity information into the affinity matrix for parcellation to ameliorate the adverse effects of noise. We further integrate the connectivity information from both anatomical and functional modalities based on adaptive weighting for an improved parcellation. Our second contribution is to propose noise reduction techniques for brain network edge definition. We propose a matrix completion based technique to combat false negatives by recovering missing connections. We also present a local thresholding method which can address the regional bias issue when suppressing the false positives in connectivity estimates. Our third contribution is to improve the brain subnetwork extraction by using multi-pronged graphical metric guided methods. We propose a connection-fingerprint based modularity reinforcement model which reflects the putative modular structure of a brain graph. Inspired by the brain subnetwork's biological nature, we propose a provincial hub guided feedback optimization model for more reproducible subnetwork extraction. Our fourth contribution is to develop multimodal integration techniques to further improve brain subnetwork extraction. We propose a provincial hub guided subnetwork extraction model to fuse anatomical and functional data by propagating the modular structure information across different modalities. We further propose to fuse the task and rest functional data based on hypergraphs for non-overlapping and overlapping subnetwork extraction. Our results collectively indicate that combing multimodal information and applying graphical metric guided strategies outperform classical unimodal brain connectivity analysis methods. The resulting methods could provide important insights into cognitive and clinical neuroscience.