cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Uncertainty assessment of climate and land use changes scenarios for the Millbrook catchment - reservoir system simulated by the SWAT-SALMO
Creators: name: Nguyen, Hanh
name: Recknagel, Friedrich
name: Meyer, Wayne
Publisher: name: Friedrich-Schiller-Universität Jena
Year: 2018
Subjects: subject: SWAT
subject: SALMO
subject: catchment -reservoir system
subject: uncertainty
subject: climate and land use change
subject: 004
subject: 580
subject: 590
subject: 600
subject: 630

description: In this study, we analyse the uncertainty of eutrophication effects of ongoing environmental and climate changes on the Millbrook reservoir simulated by the model ensemble SWAT-SALMO. The semi-arid Millbrook catchment-reservoir system provides drinking water to the north-eastern region of Adelaide, South Australia. The Soil and Water Assessment Tool (SWAT) simulated flow as well as nitrate and phosphate loadings originating from the catchment before entering the reservoir. The lake model SALMO received the simulated nitrate and phosphate loadings as input and determined daily phosphate, nitrate, and chlorophyll -a concentrati ons in the reservoir. This integrated modelling framework was key for simulating complex scenarios on impacts of future climate and land use changes on the whole catchment -reservoir system. The uncertainty of simulation results has been taken into accoun t by complex statistical algorithms, including the Sequential Uncertainty Fitting (SUFI2) of the SWAT calibration wizard, and multi -objective parameter optimisation of SALMO by means of the Hybrid Evolutionary Algorithm (HEA). In view of the large number of data processing steps required for the integrated simulations, the uncertainty assessment focused on the five best simulations results from the SWAT to be utilised for the parameter optimisation of SALMO. The uncertainty of the model ensemble has been qu antified as envelope of the fifty best iterations of nitrate, phosphate, and chlorophyll -a concentrations based on daily time steps for a typical “dry” and a typical “wet” year. The synergized envelop was further used to compare with the results of predict ion of impacts of climate and land use changes on the Millbrook catchment - reservoir system. Overall, the estimation of uncertainty bound from the catchment -reservoir model ensemble may improve the credibility of the model predictions to be further considered in decision- making.
description: ICEI 2018 : 10th International Conference on Ecological Informatics- Translating Ecological Data into Knowledge and Decisions in a Rapidly Changing World
Index to Minutes of Meetings of the Executive Committee & the Board of Trustees, 1911-1946, "Po"
Creators: name: Carnegie Corporation Of New York
Publisher: name: Columbia University
Year: 2018
Subjects: Corporate meetings
Charitable uses, trusts, and foundations

description: The following microfilm is a copy of 5 x 8 Kardex cards hitherto used in the Cumulative Index to the Minutes of the Executive Committee and of the Board of Trustees of the Carnegie Corporation of New York, from the first meeting of the Trustees (November 10, 1911) through the 22nd meeting of the Executive Committee (September 17, 1946). The Cumulative Index was initiated during the early days of the Corporation when the offices of the President, the Secretary, and the Treasurer were separately organized, each with its own system of records. It was maintained by Durand R. Miller, first as secretary to the Secretary of the Corporation, James Bertram, and later as Record Clerk of the Corporation. The entries in the Cumulative Index are duplications of those recorded in the index of each bound volume of Minutes.
title: What is a prior and how to derive one?
Creators: name: Qian, Song
Publisher: name: Friedrich-Schiller-Universität Jena
Year: 2018
Subjects: subject: Bayesian network
subject: empirical Bayes
subject: exchangeability
subject: hierarchical mode
subject: 004
subject: 570
subject: 580
subject: 590
subject: 600
subject: 630

description: Application of Bayesian statistics requires eliciting prior distributions, an important first step that is often ignored. The difficulty in prior elicitation is largely due to the vague definition of the prior. Furthermore, formal methods for deriving priors are mostly focused on deriving priors with least amount of information (e.g., the reference prior). In practice, we often resort to a class of “non-informative” or “vague” priors when using relatively simple models. These priors are usually informative in some way and can lead to unintended consequences. In this presentation, I discuss the meaning of a prior distribution from an empirical Bayes perspective, which is the “centre of gravity” of similar (exchangeable) units. Based on this definition, I present a Bayesian network based method to derive prior distributions for relatively complex models. The method borrows the Bayesian network model approach of using a directed acyclic graph to summarize our knowledge on the subject of interest and extends the Bayesian network to accommodate continuous variables. Continuous variables can enter the network through empirical models based on exploratory data analysis through existing models. The continuous variable Bayesian network modelling approach is illustrated using three examples – a model for evaluating the risk of Cryptosporidium contamination in US drinking water systems, model -based nutrient criteria for small rivers and streams in Ohio, and assessing water availabi lity to meet the use of both societal and ecological needs in the southeastern US.
description: ICEI 2018 : 10th International Conference on Ecological Informatics- Translating Ecological Data into Knowledge and Decisions in a Rapidly Changing World
Self-accelerating solutions in massive gravity on an isotropic reference metric
Creators: name: Motohashi, Hayato
name: Suyama, Teruaki
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Within the framework of the recently proposed ghost-free massive gravity, a cosmological constant-type self-accelerating solution has been obtained for Minkowski and de Sitter reference metrics. We ease the assumption on the reference metric and find the self-accelerating solution for the reference metric respecting only isotropy, thus considerably extending the range of known solutions.
description: 4 pages; matches the published version in Phys. Rev. D
An Appraisal of Amnesty International's Work at the United Nations: Established Areas of Activities and Shifting Priorities Since the 1990s
Creators: name: Martens, Kerstin
Publisher: name: Johns Hopkins University Press
Year: 2004
Subjects: subject: Amnesty International
subject: United Nations
subject: 300

description: The aim of this paper is to explore Amnesty International’s relationship with the United Nations over time, whereby particular attention is paid to the period since the mid-1990s. The proposition of this study is that the NGO changed its pattern of activity with the United Nations depending on the prospects it perceived to advance human rights. Most significantly, over the last decade, Amnesty International has broadened its spectrum of activities with the United Nations, and today, it is basically involved in all stages of the political process; from agenda setting to policy formulation and project implementation.
title: SPARROW Applications Using Bayesian Inference Techniques
Creators: name: Neumann, Alex
name: Arhonditsis, George
Publisher: name: Friedrich-Schiller-Universität Jena
Year: 2018
Subjects: subject: SPARROW
subject: GREEN
subject: watershed
subject: source apportionment
subject: 004
subject: 570
subject: 580
subject: 590
subject: 600
subject: 630

description: The parsimonious model structures of semi -empirical conceptual watershed models (e.g., SPARROW, GREEN) offer considerable advantages over physically -based watershed models to incorporate stream water monitoring data and effectively accommodate rigorous error analysis. Nonetheless, even these model structures demonstr ate intrinsic equifinality problems due to multicollinearity of model parameters. Bayesian inference techniques offer a robust and formal statistical calibration methodology to address model equifinality issues with watershed inverse analysis. In our presentation, we first summarise known case- studies of Bayesian inference implementation for semi -empirical watershed models (USA, Canada, China). We then provide an overview of relevant Bayesian statistical formulations to explicitly consider watershed spatial heterogeneity, serial correlation, and inter - and intra- annual dynamics. Finally, we outline the strengths and weaknesses of inverse watershed models within a Bayesian inference context for recursive calibration and data assimilation, including hotspot identification, loading source apportionment, representation of legacy nutrients, and quantification of all major sources of uncertainty
description: ICEI 2018 : 10th International Conference on Ecological Informatics- Translating Ecological Data into Knowledge and Decisions in a Rapidly Changing World
Solar flare hard X-ray spikes observed by RHESSI: a statistical study
Creators: name: Cheng, J. X.
name: Qiu, J.
name: Ding, M. D.
name: Wang, H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Hard X-ray (HXR) spikes refer to fine time structures on timescales of seconds to milliseconds in high-energy HXR emission profiles during solar flare eruptions. Aims. We present a preliminary statistical investigation of temporal and spectral properties of HXR spikes. Methods. Using a three-sigma spike selection rule, we detected 184 spikes in 94 out of 322 flares with significant counts at given photon energies, which were detected from demodulated HXR light curves obtained by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI). About one fifth of these spikes are also detected at photon energies higher than 100 keV. Results. The statistical properties of the spikes are as follows. (1) HXR spikes are produced in both impulsive flares and long-duration flares with nearly the same occurrence rates. Ninety percent of the spikes occur during the rise phase of the flares, and about 70% occur around the peak times of the flares. (2) The time durations of the spikes vary from 0.2 to 2 s, with the mean being 1.0 s, which is not dependent on photon energies. The spikes exhibit symmetric time profiles with no significant difference between rise and decay times. (3) Among the most energetic spikes, nearly all of them have harder count spectra than their underlying slow-varying components. There is also a weak indication that spikes exhibiting time lags in high-energy emissions tend to have harder spectra than spikes with time lags in low-energy emissions.
description: 16 pages, 13 figures
Non-governmental Organisations as Corporatist Mediator? An Analysis of NGOs in the UNESCO System
Creators: name: Martens, Kerstin
Publisher: name: Taylor & Francis
Year: 2010
Subjects: subject: Non-governmental Organisations
subject: Mediator
subject: NGO
subject: UNESCO
subject: 300

description: Non-governmental Organisations as Corporatist Mediator? An Analysis of NGOs in the UNESCO System
Stellar irradiated discs and implications on migration of embedded planets I: equilibrium discs
Creators: name: Bitsch, Bertram
name: Crida, Aurélien
name: Morbidelli, Alessandro
name: Kley, Willy
name: Dobbs-Dixon, Ian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The strength and direction of migration of low mass planets depends on the disc's thermodynamics. In discs where the viscous heating is balanced by radiative transport, the migration can be directed outwards, a process which extends the lifetime of growing planetary embryos. We investigate the influence of opacity and stellar irradiation on the disc thermodynamics. Utilizing the resulting disc structure, we determine the regions of outward migration. We perform two-dimensional numerical simulations of equilibrium discs with viscous heating, radiative cooling and stellar irradiation. We use the hydrodynamical code NIRVANA that includes a full tensor viscosity and stellar irradiation, as well as a two temperature solver that includes radiation transport in the flux-limited diffusion approximation. The migration is studied by using torque formulae. In the constant opacity case, we reproduce the analytical results of a black-body disc: the stellar irradiation dominates in the outer regions -- leading to flaring -- while the viscous heating dominates close to the star. We find that the inner edge of the disc should not be significantly puffed-up by the stellar irradiation. If the opacity depends on the local density and temperature, the structure of the disc is different, and several bumps in the aspect ratio H/r appear, due to transitions between different opacity regimes. The bumps in the disc can shield the outer disc from stellar irradiation. Stellar irradiation is an important factor for determining the disc structure and has dramatic consequences for the migration of embedded planets. Compared to discs with only viscous heating, a stellar irradiated disc features a much smaller region of outward migration for a range of planetary masses. This suggests that the region where the formation of giant planet cores takes place is smaller, which in turn might lead to a shorter growth phase.
Friedrich Schlette: Germanen zwischen Thorsberg und Ravenna
Creators: name: Schwarz-Mackensen, Gesine
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Friedrich Schlette: Germanen zwischen Thorsberg und Ravenna. Kulturgeschichte der Germanen bis zum Ausgang der Völkerwanderungszeit. Urania Verlag (Verlag für populärwissenschaftliche Literatur), Leipzig-Jena-Berlin 1972. 74 Tafeln, davon 16 in Farbe, 81 Textabbildungen
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 42 (1973): Nachrichten aus Niedersachsens Urgeschichte
Index to Minutes of Meetings of the Executive Committee & the Board of Trustees, 1911-1946, "Ro"
Creators: name: Carnegie Corporation Of New York
Publisher: name: Columbia University
Year: 2018
Subjects: Corporate meetings
Charitable uses, trusts, and foundations

description: The following microfilm is a copy of 5 x 8 Kardex cards hitherto used in the Cumulative Index to the Minutes of the Executive Committee and of the Board of Trustees of the Carnegie Corporation of New York, from the first meeting of the Trustees (November 10, 1911) through the 22nd meeting of the Executive Committee (September 17, 1946). The Cumulative Index was initiated during the early days of the Corporation when the offices of the President, the Secretary, and the Treasurer were separately organized, each with its own system of records. It was maintained by Durand R. Miller, first as secretary to the Secretary of the Corporation, James Bertram, and later as Record Clerk of the Corporation. The entries in the Cumulative Index are duplications of those recorded in the index of each bound volume of Minutes.
Optical modes in oxide-apertured micropillar cavities
Creators: name: Bonato, Cristian
name: Gudat, Jan
name: de Vries, Keesjan
name: Kim, Hyochul
name: Thon, Susanna M.
name: Petroff, Pierre M.
name: van Exter, Martin P.
name: Bouwmeester, Dirk
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a detailed experimental characterization of the spectral and spatial structure of the confined optical modes for oxide-apertured micropillar cavities, showing good-quality Hermite-Gaussian profiles, easily mode-matched to external fields. We further derive a relation between the frequency splitting of the transverse modes and the expected Purcell factor. Finally, we describe a technique to retrieve the profile of the confining refractive index distribution from the spatial profiles of the modes.
description: 4 pages, 3 figures
Nachruf. Prof. Dr. Wolfgang Hübener. 15. Juni 1924–1. April 2015
Creators: name: Bärenfänger, Rolf
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: -
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 84 (2015): Nachrichten aus Niedersachsens Urgeschichte
Michael Mackensen, Frühkaiserzeitliche Kleinkastelle bei Nersingen und Burlafingen an der Oberen Donau
Creators: name: Hochuli-Gysel, Anne
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Michael Mackensen, Frühkaiserzeitliche Kleinkastelle bei Nersingen und Burlafingen an der Oberen Donau. Mit Beiträgen von A. von den Driesch, G. Endlicher, Fr. Fröhlich, L. Pauli, D. Rose, P. Schröter und U. Willerding. Veröffentlichungen der Kommission zur archäologischen Erforschung des spätrömischen Raetien. Münchner Beiträge zur Vor- und Frühgeschichte, Band 41. C. H. Beck’sche Verlagsbuchhandlung, München 1987. 344 Seiten, ca. 135 Abbildungen, zahlreiche Tabellen, 4 Falttafeln.
description: Bonner Jahrbücher, Bd. 191.1991(1992): Bonner Jahrbücher
The y-genus of the moduli space of PGL_n-Higgs bundles on a curve (for degree coprime to n)
Creators: name: García-Prada, Oscar
name: Heinloth, Jochen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Building on our previous joint work with A. Schmitt [7] we explain a recursive algorithm to determine the cohomology of moduli spaces of Higgs bundles on any given curve (in the coprime situation). As an application of the method we compute the y-genus of the space of PGL_n-Higgs bundles for any rank n, confirming a conjecture of T. Hausel.
description: 13 pages
title: Integration of near-surface and satellite observations for algal bloom detection
Creators: name: Anstee, Janet
name: Joehnk, Klaus
name: Ford, Phillip
name: Malthus, Tim
name: Botha, Elizabeth
name: Oostende, Marit
name: Lehmann, Eric
name: Ho, Xavier
name: Gensemer, Stephen
Publisher: name: Friedrich-Schiller-Universität Jena
Year: 2018
Subjects: subject: Open Datacube, algal bloom detection, monitoring
subject: 004
subject: 570
subject: 580
subject: 590
subject: 600
subject: 630

description: Retrieval of water quality information from satellite imagery can provide resource managers with an improved understanding into the spatial variability of the water body. In light of the increasing availability of ‘analysis ready data’ (ARD) satellite imagery in open datacubes*, either on cloud-based services or on high performance computing environments, development of operational monitoring systems is becoming feasible. Near-surface sensors can assist in more rapid and widespread algal bloom monitoring at a much higher temporal resolution. Remote sensing imagery, whilst cost effective, may not be optimal in terms of spatial or spectral resolution and can be greatly enhanced with the integration of near-surface observations. We describe pathways to use field-based near-surface sensors to calibrate and validate satellite remote sensing. These methods allow early detection of algal blooms and assist in the early warning for management intervention. We have designed and deployed several low-cost, near-surface sensors at several inland water sites around eastern Australia. The data is transferred using mobile networks where it is processed into spectral information. From this data and coincident field bio-optical measurements, we have developed algorithms for quantitative estimation of blue-green algal-specific pigments (phycocyanin) and chlorophyll concentrations. We have tested these algorithms for detection using a number of existing satellite sensors and report on results here. These methods have applied next-generation monitoring technology and when combined with hydrologic modelling will provide aquatic observations and forecasts. These will lead to improved management preparedness to respond to environmental challenges, e.g., a harmful algal blooms.
description: ICEI 2018 : 10th International Conference on Ecological Informatics- Translating Ecological Data into Knowledge and Decisions in a Rapidly Changing World
Explaining Policy Convergence and Polity Divergence in Federal Systems: German and Swiss Higher Education Revisited
Creators: name: Dobbins, Michael
name: Niemann, Dennis
name: Martens, Kerstin
Publisher: name: Oxford University Press (OUP)
Year: 2018
Subjects: subject: Policy Convergence
subject: Polity Divergence
subject: Federal Systems
subject: Higher Education
subject: 300

description: This article explores higher education reforms in the federally organized education systems of Germany and Switzerland. We argue that the increasing internationalization of education—spearheaded by the Bologna Process—has brought about changes not only in higher education policy, but also led to significant reconfigurations of the higher education polity. These processes present an empirical puzzle: while higher education policies in both systems have broadly moved in the same direction, they have significantly diverged regarding the higher education polity. While Germany has decentralized its higher education system, Switzerland has embraced more centralized structures. Drawing on historical institutionalism, we explain why Germany and Switzerland reacted to essentially identical external challenges with diametrically opposite polity reforms. We contend that this “polity divergence”—despite “policy convergence”—was channeled by the preexisting institutional configurations of educational federalism which steered partisan conflicts along specific paths.
title: Leaf Mass per Area of Wetland Vegetation under Water Stress Analyzed with Imaging Spectroscopy
Creators: name: Feilhauer, Hannes
name: Schmid, Thomas
name: Faude, Ulrike
name: Sánchez-Carrillo, Salvador
name: Cirujano, Santos
Publisher: name: Friedrich-Schiller-Universität Jena
Year: 2018
Subjects: subject: Remote sensing, Plant traits, Drought, Radiative transfer, Random forest
subject: 004
subject: 570
subject: 580
subject: 590
subject: 600
subject: 630

description: Plant and community traits of wetland vegetation show a high intra-specific plasticity, originating from the high variability of environmental conditions. Remote sensing approaches promise to be able to retrieve some of these traits and their plasticity from the spectral reflectance signal of the canopy. In the present study, we evaluate a remote-sensing based approach for an analysis of spatial patterns of leaf mass per area (LMA), a key trait for ecosystem functioning and good negative correlate of potential growth rate. The test was conducted in Las Tablas de Daimiel, a National Park in Central Spain. This wetland was affected by a long-term drought, which introduced pronounced trait plasticity as part of the adaptation mechanisms of the vegetation to reduced water availability as well as a decrease in photosynthetic activity. Imaging spectroscopy (HyMap) data of the wetland were acquired in 2009 at peak drought intensity. At the same time, a field campaign was conducted. We applied an inversion of the PROSAIL model on these data to map the LMA distribution across the wetland. PROSAIL is a radiative transfer model that simulates the physical principles of light absorption and scattering in a vegetation canopy. The inversion enables the retrieval of trait information from the spectral signal. Furthermore, we assessed trends in photosynthetic activity and changing species composition across the wetland by analyzing time series of the normalized difference vegetation index (NDVI) as determined from various multispectral sensors. The mapped LMA values were analyzed within and between stands of different species and communities along a gradient of changing photosynthetic activity and species composition. LMA values retrieved for stands of species with high photosynthetic activity at peak drought intensity closely met values reported in trait data bases. The observed intra-specific LMA variability is in line with the expected plasticity of this trait along a moisture gradient that is reflected in a change in photosynthetic activity and species composition. We thus conclude that remote sensing approaches provide sufficient detail to trace the LMA-response of wetland vegetation to long-term drought stress.
description: ICEI 2018 : 10th International Conference on Ecological Informatics- Translating Ecological Data into Knowledge and Decisions in a Rapidly Changing World
Dakisch-thrakische Soldaten im Römerlager Oberaden
Creators: name: Schnurbein, Siegmar Von
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: -
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 64 Nr. 2 (1986)
THE IMPACT OF DIGITAL TRANSFORMATION ON JORDANIAN MEDIA LEGISLATION; A SURVEY STUDY
Creators: name: MOHAMMED ZAID OBEIDAT
Publisher: name: Zenodo
Year: 2025
Subjects: Digital Transformation, Media Legislation, Digital Media, Media Laws, Legislative Reforms.

description: Abstract

This study aims to investigate the impact of digital transformation on Jordanian media legislation, by analyzing the adequacy of current laws in regulating digital media, the legal challenges facing it, and the need for legislative reforms that keep pace with digital developments. The survey approach was adopted, as the study included a sample of legal, media, and academic experts. It used a questionnaire that measured their opinions on current legislation and its responsiveness to digital media. The results have shown that 70% of the participants believe that current media legislation is insufficient, 71% confirmed the absence of clear legislation to regulate digital content, while 65% indicated the weakness of laws in confronting misleading news. Other challenges have emerged related to protecting privacy (60%), regulating the legal liability of digital platforms (55%), and intellectual property rights (50%). Regarding reforms, 75% recommended enacting new specialized laws, 70% stressed the importance of tightening penalties for publishing misleading news, while 60% indicated the need to protect electronic publishing rights. The study concluded that Jordanian media legislation needs to be updated to ensure a balance between media freedom and the protection of digital rights. Recommended cooperation need between legislative and media bodies to establish a more flexible and effective legal framework that enhances the credibility of digital media and protects users, in keeping with the rapid developments in this field.
Coordinatization of join-distributive lattices
Creators: name: Czédli, Gábor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 06C10 (Primary) 05E99, 52C99 (Secondary)

description: Join-distributive lattices are finite, meet-semidistributive, and semimodular lattices. They are the same as Dilworth's lattices in 1940, and many alternative definitions and equivalent concepts have been discovered or rediscovered since then. Let L be a join-distributive lattice of length n and let k denote the width of the set of join-irreducible elements of L. A result of P.H. Edelman and R.E. Jamison, translated from Combinatorics to Lattice Theory, says that L can be described by k-1 permutations acting on the set {1,...,n}. We prove a similar result within Lattice Theory: there exist k-1 permutations acting on {1,...,n} such that the elements of L are coordinatized by k-tuples over {0,...,n}, and the permutations determine which k-tuples are allowed. Since the concept of join-distributive lattices is equivalent to that of antimatroids and convex geometries, our result offers a coordinatization for these combinatorial structures.
description: 20 pages, no figure
title: Quantum technological dating of glacier ice from the last
millennium and a new self-contained facility for routine
measurements
Creators: name: Feng, Zhongyi
Publisher: name: Heidelberg University Library
Year: 2019

description: The noble gas radioisotopes 85Kr, 39Ar and 81Kr are of great importance in radiometric dating because their half-lives cover time scales from the last millennium to one million years before present. They are present as inert trace gases in the atmosphere and the exchange with other environmental reservoirs makes them ideal tracers for hydrology, oceanography and glaciology. Their very low isotopic abundance is the huge hindrance for the detection and analysis. Especially in the case of argon with a natural abundance of 8x10^−16, classical decay counting requires tons of water or ice and measurement times of several weeks. To reduce the sample size, techniques from the field of quantum optics are applied to capture the atoms directly rather than rely on their decay signature.
Argon Trap Trace Analysis is capable of daily measurements using samples as small as 0.5 mL STP argon and this is demonstrated here for glacier ice. A few kilograms of ice have been taken in artificial glacier caves and the measured argon ages are validated against preexisting constraints. These results and recent pilot studies have arisen a huge demand for small sample radio-argon dating. To meet this development, a second apparatus has been built in a self-sufficient laboratory container. The new machine is optimized for robustness and will increase the sample throughput capacities in the near-future. Furthermore, a setup has been built to characterize and improve the performance of the argon source, a main loss factor concerning efficiency
Pulsars as excellent probes for the magnetic structure in our Milky Way
Creators: name: Han, JinLin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this invited talk, I first discuss the advantages and disadvantages of many probes for the magnetic fields of the Milky Way. I conclude that pulsars are the best probes for the magnetic structure in our Galaxy, because magnetic field strength and directions can be derived from their dispersion measures (DMs) and rotation measures (RMs). Using the pulsars as probes, magnetic field structures in the Galactic disk, especially the field reversals between the arms and interarm regions, can be well revealed from the distribution of RM data. The field strengths on large scales and small scales can be derived from RM and DM data. RMs of extragalactic radio sources can be used as the indication of magnetic field directions in the spiral tangential regions, and can be used as probes for the magnetic fields in the regions farther away than pulsars when their median RMs are compared with pulsar RMs.
description: Proceedings of an invited talk in IAUS 291 "Neutron Stars and Pulsars: Challenges and Opportunities after 80 years", J. van Leeuwen (ed.); 6 pages, 1 figure
Dark matter chaos in the Solar System
Creators: name: Lages, J.
name: Shepelyansky, D. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the capture of galactic dark matter particles in the Solar System produced by rotation of Jupiter. It is shown that the capture cross section is much larger than the area of Jupiter orbit being inversely diverging at small particle energy. We show that the dynamics of captured particles is chaotic and is well described by a simple symplectic dark map. This dark map description allows to simulate the scattering and dynamics of $10^{14}$ dark matter particles during the life time of the Solar System and to determine dark matter density profile as a function of distance from the Sun. The mass of captured dark matter in the radius of Neptune orbit is estimated to be $2 \cdot 10^{15} g$. The radial density of captured dark matter is found to be approximately constant behind Jupiter orbit being similar to the density profile found in galaxies.
description: Accepted in MNRAS Letters, 5 pages, 5 figures
Index to Minutes of Meetings of the Executive Committee & the Board of Trustees, 1911-1946, "Se"
Creators: name: Carnegie Corporation Of New York
Publisher: name: Columbia University
Year: 2018
Subjects: Corporate meetings
Charitable uses, trusts, and foundations

description: The following microfilm is a copy of 5 x 8 Kardex cards hitherto used in the Cumulative Index to the Minutes of the Executive Committee and of the Board of Trustees of the Carnegie Corporation of New York, from the first meeting of the Trustees (November 10, 1911) through the 22nd meeting of the Executive Committee (September 17, 1946). The Cumulative Index was initiated during the early days of the Corporation when the offices of the President, the Secretary, and the Treasurer were separately organized, each with its own system of records. It was maintained by Durand R. Miller, first as secretary to the Secretary of the Corporation, James Bertram, and later as Record Clerk of the Corporation. The entries in the Cumulative Index are duplications of those recorded in the index of each bound volume of Minutes.
title: SCOPE model inversion for Sentinel-3 data retrieval
Creators: name: Prikaziuk, Egor
name: van der Tol, Christiaan
Publisher: name: Friedrich-Schiller-Universität Jena
Year: 2018
Subjects: subject: Remote sensing, Ecosystem, Retrieval, Sentinel-3, SCOPE
subject: 004
subject: 570
subject: 580
subject: 590
subject: 600
subject: 630

description: The SCOPE is a coupled radiative transfer and energy balance model used for simulation of vegetation optical properties and temperature at leaf and canopy level over a spectral range from 0.4 to 50 μm. Inversion of the model allows retrieving a number of plant traits: pigments (Cab, Car, Cant), dry matter content (Cdm), water content (Cw), leaf area index (LAI) and others. Subsequent forward simulation can calculate photosynthesis, evapotranspiration (ET) and a fraction of absorbed photosynthetically active radiation (fAPAR) that can be used further for integrated water use efficiency (WUE) and light use efficiency (LUE) calculations, respectively. The higher the accuracy in retrieved parameters is achieved the higher precision in calculated ecosystem functional properties will be. This work aimed to develop a model-based retrieval algorithm from multispectral satellite data. The initial retrieval algorithm used numerical optimization of residuals squared sum and operated over the spectral range from 0.4 to 2.4 μm. First, the algorithm was extended to the thermal domain (up to 50 μm) and validated against open-source spectral measurement datasets (SPECCHIO). As the SCOPE model operates at both leaf and canopy levels, we had to use different cost functions and constraints for each level. Having validated the hyperspectral retrieval algorithm, we tried to make a convolution to the multispectral case of Sentinel-3 satellite sensors: ocean and land colour instrument (OLCI) and sea and land surface temperature radiometer (SLTR). Finally, parameter retrieved with the algorithm from Sentinel-3 images were used for a forward simulation of the SCOPE model and calculation of integrated WUE and LUE at few selected FLUXNET towers. The results of the simulation were validated against data from FLUXNET eddy-covariance towers.
description: ICEI 2018 : 10th International Conference on Ecological Informatics- Translating Ecological Data into Knowledge and Decisions in a Rapidly Changing World
title: Mapping of invasive plant species with Sentinel-1 and -2 data calibrated with UAV-based training data
Creators: name: Kattenborn, Teja
name: Lopatin, Javier
name: Förster, Michael
name: Fassnacht, Fabian
Publisher: name: Friedrich-Schiller-Universität Jena
Year: 2018
Subjects: subject: Unmanned aerial vehicle, Invasive species, random forest, MaxEnt
subject: 004
subject: 570
subject: 580
subject: 590
subject: 600
subject: 630

description: Up-to-date maps on depicting the current status of plant invasions are highly valuable for efficient mitigation measures. In this context, remote sensing has been reported to be a useful tool for continuous mapping of invasive species over larger spatial extents. So far an important restriction for the development of flexible, operational approaches was the limited availability of cost-free and spatially highly-resolved datasets in many parts of the world. Since 2014, ESA´s Sentinel-1 and 2 satellites provide cost-free EO data with global coverage, relatively high temporal and spatial resolution. This data is ascribed a high potential for differentiating plant species. One important perquisite to operationally use such data for an operational mapping of invasive species is an efficient collection of reference data to train and validate mapping procedures applied to Sentinel data. We hypothesize that data collected from unmannead aerial vehicles (UAV) can be an efficient alternative of traditional field surveys. Applying UAV data instead of GNSS-coded (global navigation satellite system) field data comprises several advantages: (1) more area can be mapped in a given time frame, (2) increased area accessibility, (3) the UAV data share the bird’s eye perspective of the satellite data and are hence directly compatible, and (4) the extraction of target species may be possible with automatized classification algorithms. We hence developed and tested a workflow for three invasive woody plant species in southern Chile which firstly includes an automatic extraction of spatially continuous species cover from UAV imagery by combining a sparse set of photo-interpreted presence points of the target species with a Maximum Entropy (MaxEnt) classifier. Secondly, we use this species cover data as reference to train a random forest model with multitemporal Sentinel observations to predict the canopy cover of the three target species over large areas. Our results show that the three invasive species considered can be mapped with very high accuracy as there is a very high agreement between UAV and Sentinel predictions (R2 > 0.9, NRMSE < 10%). We thus conclude that the proposed methodology can be used as a blueprint for operational monitoring of invasive plant species.
description: ICEI 2018 : 10th International Conference on Ecological Informatics- Translating Ecological Data into Knowledge and Decisions in a Rapidly Changing World
[DRAFT] Il bello naturale nell'estetica contemporanea
Creators: name: Vargiu, Luca
Publisher: name: Zenodo
Year: 1998
Subjects: Landscape
Natural Beauty
Aesthetics

description: Negli ultimi anni ambientalisti ed ecologisti si sono affacciati sui territori
 dell’estetica filosofica, favorendo il rilancio di una tematica, quella del bello naturale,
 che da lunghissimo tempo era stata dimenticata e quasi del tutto rimossa.
Caprella danilevskii Czerniavskii 1868
Creators: name: Guerra-García, J. M.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Caprellidae
Caprella
Caprella danilevskii

description: Caprella danilevskii Czerniavskii, 1868 Fig. 41 Caprella Danilevskii Czerniavskii, 1868: 92, pl. 6: figs. 21–34; Mayer, 1890: 58, pl. 5: fig. 44; pl. 7: figs. 12–13. Caprella Danilewskii Chevreux & Fage, 1925: 454, fig. 432. Caprella danilevskii McCain, 1968: 22, figs. 10–11; McCain & Steinberg, 1970: 16; Cavedini, 1982: 499; Krapp-Schickel, 1993: 779, fig. 531; Guerra-García & Takeuchi, 2002: 683– 684, fig. 6. Caprella inermis Haswell, 1879: 319–351. Material examined. 13, 1 premature female, AM P61639 (QLD 949); 13, 2 female, AM P61640 (QLD 954); 13, AM P61641 (QLD 957); 3 female, AM P61642 (QLD 968); 13, AM P61643 (QLD 969); 2 male, AM P61644 (QLD 972); 13, AM P61645 (QLD 979); 333, 2♀♀, AM P61476 (LHA 48); 233, 3♀♀, AM P61477 (LHA 49); 1♀, AM P61478 (LHA 51); 13, AM P43062, Bustard Head, south of Gladstone, Queensland, 24°02'S 151°46'E, among Sargassum on rocks, J.S. Hynd, 28 Aug 1946;> 20 specimens, AM P61334, Miami, Queensland, 28°04'S 153°27'E, among weed on rocky headland, J.S. Hynd, Aug 1944. Remarks. Caprella danilevskii is a cosmopolitan species (Krapp-Schickel, 1993). The distinctive male abdomen, the absence of grasping spines on the pereopods and the short dactylus of male gnathopod 2 distinguish this species from other species of Caprella. The morphology of Queensland specimens agrees with published accounts (Krapp-Schickel, 1993; Guerra-García & Takeuchi, 2002). The species has been found mainly in southern Queensland, around Shoalwater Bay, Lord Howe Island and the coast near Brisbane. Apparently, this species favours no-coralline habitats. Distribution. Cosmopolitan (Krapp-Schickel, 1993); a new record for Queensland.
description: Published as part of Guerra-García, J. M., 2006, Caprellidae (Crustacea: Amphipoda) from the Great Barrier Reef and Adjacent Localities, pp. 417-458 in Records of the Australian Museum 58 on page 442
title: Challenges and opportunities of Earth observation for the prediction of water quality in inland waters
Creators: name: Joehnk, Klaus
name: Anstee, Janet
Publisher: name: Friedrich-Schiller-Universität Jena
Year: 2018
Subjects: subject: harmful algal blooms, hypoxia, flood inundation, early warning, hydrodynamic modelling
subject: 004
subject: 570
subject: 580
subject: 590
subject: 600
subject: 630

description: Water quality in lakes and river systems has deteriorated worldwide due to intensification in land use and associated nutrient loading or changes in natural flow regimes. The most obvious impacts are increase in the frequency of harmful algal blooms caused by potentially toxic cyanobacteria and fish kills due to hypoxia. Other problems are not immediately visible or have indirect impacts like contamination by metals and pathogens, or vector borne diseases depending on wetting and increased temperature. To reduce health and economic risks posed by such water quality issues, there is an increased need for early warning systems. While Earth observation of inland aquatic systems can give an account of historic conditions and current state, integrating hydrodynamic and hydrologic modelling tools with predictive capabilities allow for timely intervention and optimised management options. On a local scale Earth observation can be used to drive hydrodynamic simulations for short term prediction of harmful algal blooms in specific water bodies allowing for early warning and providing operating strategies for risk minimisation for, e.g., water treatment plants or reservoirs (case studies shown here). Combined with local hyperspectral sensors it is even possible to discriminate cyanobacteria species based on their pigments and thus infer potential toxicity. A generalisation of these methods on a regional or continental scale not only yields an early warning account for a larger region, e.g. state wide, but can yield a risk estimation based on weather forecast. In combination with hydrologic modelling tools EO is applied in ecological impact studies of flood inundation, e.g., the generation of hypoxic conditions in lowland rivers, or the spread of a carp virus for pest eradication in a large basin. Although there is a large spectrum of water quality issues where EO can lead to better insight, spatial and temporal resolution of satellite sensors limits their application. Other techniques of remote sensing are necessary to fill these gaps.
description: ICEI 2018 : 10th International Conference on Ecological Informatics- Translating Ecological Data into Knowledge and Decisions in a Rapidly Changing World
Realized Laplace transforms for pure-jump semimartingales
Creators: name: Todorov, Viktor
name: Tauchen, George
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We consider specification and inference for the stochastic scale of discretely-observed pure-jump semimartingales with locally stable Lévy densities in the setting where both the time span of the data set increases, and the mesh of the observation grid decreases. The estimation is based on constructing a nonparametric estimate for the empirical Laplace transform of the stochastic scale over a given interval of time by aggregating high-frequency increments of the observed process on that time interval into a statistic we call realized Laplace transform. The realized Laplace transform depends on the activity of the driving pure-jump martingale, and we consider both cases when the latter is known or has to be inferred from the data.
description: Published in at http://dx.doi.org/10.1214/12-AOS1006 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Index to Minutes of Meetings of the Executive Committee & the Board of Trustees, 1911-1946, "Sh"
Creators: name: Carnegie Corporation Of New York
Publisher: name: Columbia University
Year: 2018
Subjects: Corporate meetings
Charitable uses, trusts, and foundations

description: The following microfilm is a copy of 5 x 8 Kardex cards hitherto used in the Cumulative Index to the Minutes of the Executive Committee and of the Board of Trustees of the Carnegie Corporation of New York, from the first meeting of the Trustees (November 10, 1911) through the 22nd meeting of the Executive Committee (September 17, 1946). The Cumulative Index was initiated during the early days of the Corporation when the offices of the President, the Secretary, and the Treasurer were separately organized, each with its own system of records. It was maintained by Durand R. Miller, first as secretary to the Secretary of the Corporation, James Bertram, and later as Record Clerk of the Corporation. The entries in the Cumulative Index are duplications of those recorded in the index of each bound volume of Minutes.
Conductivity of suspended graphene at the Dirac point
Creators: name: Gornyi, I. V.
name: Kachorovskii, V. Yu.
name: Mirlin, A. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study transport properties of clean suspended graphene at the Dirac point. In the absence of the electron-electron interaction, the main contribution to resistivity comes from interaction with flexural (out-of-plane deformation) phonons. We find that the phonon-limited conductivity scales with the temperature as $T^{-η}, $ where $η$ is the critical exponent (equal to $\approx 0.7$ according to numerical studies) describing renormalization of the flexural phonon correlation functions due to anharmonic coupling with the in-plane phonons. The electron-electron interaction induces an additional scattering mechanism and also affects the electron-phonon scattering by screening the deformation potential. We demonstrate that the combined effect of both interactions results in a conductivity that can be expressed as a dimensionless function of two temperature-dependent dimensionless constants, $G[T]$ and $G_e[T]$ which characterize the strength of electron-phonon and electron-electron interaction, respectively. We also discuss the behavior of conductivity away from the Dirac point as well as the role of the impurity potential and compare our predictions with available experimental data.
description: 19 pages, 12 figures, published version (Appendix A expanded, typos corrected, references added)
A stochastic model of the tweet diffusion on the Twitter network
Creators: name: Kawamoto, Tatsuro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We introduce a stochastic model which describes diffusions of tweets on the Twitter network. By dividing the followers into generations, we describe the dynamics of the tweet diffusion as a random multiplicative process. We confirm our model by directly observing the statistics of the multiplicative factors in the Twitter data.
description: 12 pages, 11 figures