cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Blind Pass Stability Analysis
Creators: name: Neal II, Robert Burgin
Publisher: name: Old Dominion University Libraries
Year: 2011

description: The stability of Blind Pass has been subjective since the opening of Redfish Pass in the 1920's. The inlet's stability, defined as its ability to maintain a consistent or equilibrium cross-section, is reviewed in terms of its historic performance and that provided through a 2009 maintenance project. Pre-project expectations are compared with physical results to illustrate the initial success of construction. The Escoffier relationship of tidal prism and cross-section area is implemented to gauge the 2009 projects long term stability. Additional monitoring within one year of construction is analyzed to further realize anticipated stability trends. The hydraulic benefit of a dual jetty system is also predicted through use of Coastal Modeling Software (CMS).

With no previous management, Blind Pass has alternated between a stable and unstable condition since the opening of Redfish Pass in the 1920' s. The pass has closed on multiple occasions as a result of a loss in tidal prism to Redfish Pass. Local interest supports an active initiative to maintain the pass and have pursued authorizations to dredge the channel in 2001 and 2009. Results of the 2009 event show the tidal prism is sufficient to maintain the pass above the critical cross-section area. However, shoaling occurring within 12 months of construction creates concern regarding sediment loading that may be overburdening the inlet.

Analysis of dual jetty alternatives indicate minor benefits are achievable. These include forcing the ebb jet seaward and increasing scouring potential. The structural alignment necessary to achieve these minor benefits may be unrealistic and the benefit level may not justify the risk.

Constricting the channel to the required cross-section to recognize the benefit of a dual jetty system may limit the channels ability to adjust to sediment overburden and also limit the adjacent shorelines natural function. Numerical modeling results show the channel width must be constricted to approximately 160 ft, assuming a 10 ft depth, to maintain scouring velocities. Forcing this channel width would encumber the inlet's innate capacity to shift along the downdrift shoreline. It could not compensate with lateral shoreline movement during periods of increased sediment loading. Historically, the lateral migration is believed to have been a very effective means of maintaining an open Blind Pass.

Structure placement may also have severe impacts on sediment bypassing rates. Additional analysis should verify structural implementation will not further impede southerly transport and create additional erosion stresses on Sanibel Island. Decreased transport to Sanibel would reduce the shorelines natural means of balancing the sediment supply. The shorelines recreational, storm protection, and habitat value would be impacted with the loss of material.
Übergabeprotokoll zur Langzeitarchivierung des DCH der Universität zu Köln
Creators: name: Lammers, Lukas
Publisher: name: Zenodo
Year: 2023

description: Das DCH (Data Center for the Humanities) der Universität zu Köln bietet einen Service zur Langzeitarchivierung an. Zur Optimierung des Workflows wurde ein kurzes Datenübergabeprotokoll entwickelt, das sowohl dem DCH als auch dem Datengeber als Nachweis zur erfolgten Archivierung dient.
Pluvials, droughts, the Mongol Empire, and modern Mongolia
Creators: name: Hessl, Amy E.
name: Pederson, Neil
name: Baatarbileg, Nachin
name: Anchukaitis, Kevin
name: Di Cosmo, Nicola
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Botany
subject: Paleoclimatology
subject: Meteorology
subject: Anthropology
subject: FOS: Sociology

description: Although many studies have associated the demise of complex societies with deteriorating climate, few have investigated the connection between an ameliorating environment, surplus resources, energy, and the rise of empires. The 13th-century Mongol Empire was the largest contiguous land empire in world history. Although drought has been proposed as one factor that spurred these conquests, no high-resolution moisture data are available during the rapid development of the Mongol Empire. Here we present a 1,112-y tree-ring reconstruction of warm-season water balance derived from Siberian pine (Pinus sibirica) trees in central Mongolia. Our reconstruction accounts for 56% of the variability in the regional water balance and is significantly correlated with steppe productivity across central Mongolia. In combination with a gridded temperature reconstruction, our results indicate that the regional climate during the conquests of Chinggis Khan’s (Genghis Khan’s) 13th-century Mongol Empire was warm and persistently wet. This period, characterized by 15 consecutive years of above-average moisture in central Mongolia and coinciding with the rise of Chinggis Khan, is unprecedented over the last 1,112 y. We propose that these climate conditions promoted high grassland productivity and favored the formation of Mongol political and military power. Tree-ring and meteorological data also suggest that the early 21st-century drought in central Mongolia was the hottest drought in the last 1,112 y, consistent with projections of warming over Inner Asia. Future warming may overwhelm increases in precipitation leading to similar heat droughts, with potentially severe consequences for modern Mongolia.
A chronology of Holocene and Little Ice Age glacier culminations of the Steingletscher, Central Alps, Switzerland, based on high-sensitivity beryllium-10 moraine dating
Creators: name: Schimmelpfennig, Irene Lois
name: Schaefer, Joerg M.
name: Akçar, Naki
name: Koffman, Tobias N.
name: Finkel, Robert C.
name: Ivy-Ochs, Susan
name: Schwartz, Roseanne G.
name: Zimmerman, Susan
name: Schlüchter, Christian
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Climatic changes
subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: Paleoclimatology
subject: Holocene Geologic Period
subject: Moraines

description: The amplitude and timing of past glacier culminations are sensitive recorders of key climate events on a regional scale. Precisely dating young moraines using cosmogenic nuclides to investigate Holocene glacier chronologies has proven challenging, but progress in the high-sensitivity 10Be technique has recently been shown to enable the precise dating of moraines as young as a few hundred years. In this study we use 10Be moraine dating to reconstruct culminations of the Steingletscher, a small mountain glacier in the central Swiss Alps, throughout the Holocene. The outermost-recorded positions of Steingletscher most likely occurred in the Early Holocene and appear nearly synchronous with glacier culminations reported from other regions in the Alps. A Late-Holocene position corroborates the evidence for a significant glacier advance of similar extent to that of the Little Ice Age (LIA) ∼3 kyr ago. Finally, fourteen boulders from different moraines yield 10Be ages between 580 and 140 years with analytical precisions mostly <10%, dating Steingletscher advances during the LIA. Because these LIA 10Be ages are in stratigraphic order, we tentatively distinguish four LIA glacier culminations: about 1470 CE, 1650 CE, 1750 CE and 1820 CE, which are in good agreement with existing independent records during the LIA in the Swiss Alps. These findings illustrate the high potential of the 10Be moraine dating method to directly link paleo-glacier-chronologies to historical records and thus present-day glacier evolution.
Photon and dilepton production in high energy heavy ion collisions
Creators: name: Sakaguchi, Takao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The recent results on direct photons and dileptons in high energy heavy ion collisions, obtained particularly at RHIC and LHC are reviewed. The results are new not only in terms of the probes, but also in terms of the precision. We will discuss the physics learned from the results.
description: Extended discussion after receiving comments from referee. 14 pages, 15 figures. Invited review for Pramana - Journal of Physics, special issue (Physics of hot and dense matter)
Investigating the role of Lysine Specific Demethylase 1 (LSD1) in embryonic development using a gastruloid model system
Creators: name: Broderick, Megan J.
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: Lysine specific demethylase 1 (LSD1) is a chromatin modifying protein which specifically demethylates the permissive histone marks H3K4me1/2 and thereby acts as a transcriptional repressor. It performs this activity as part of the CoREST (co-repressor of Repressor Element1 Silencing Transcription Factor) complex, which also encompasses histone deacetylase 1/2 (HDAC1/2) activity and is required for stability of the complex. LSD1 is essential in embryonic development, with loss of LSD1 resulting in embryonic lethality at ~E6.5, a developmental stage which correlates with the onset of gastrulation. To further investigate the role of LSD1 in embryonic development, we employed a model system, gastruloids, which closely mimic early embryogenesis and aspects of gastrulation. We generated gastruloids from both induced and control Lsd1 conditional knockout (KO) mouse embryonic stem cells (ESCs) and utilised RNAsequencing (RNA-seq) analysis to identify differentially expressed genes at timepoints representative of ESCs, early gastrulation and late gastrulation. We identified dysregulated expression of genes associated with mesodermal lineages, epithelial-tomesenchymal transition (EMT) and the bone morphogenic protein (BMP) pathway. To investigate whether gene expression changes were a result of the loss of direct LSD1 demethylase activity or of broader CoREST complex activity, we performed similar RNAseq analysis on gastruloids generated from cells with wildtype (WT) or catalytically inactive LSD1 rescue constructs. We identified genes whose expression was not rescued, suggesting dependence on LSD1 demethylase activity, and genes whose expression was fully or partially rescued, including genes associated with EMT and the BMP pathway. The work in this thesis has enabled us to gain further insight into the role of LSD1 during embryonic development.
Deep Ocean Carbonate Chemistry and Glacial-Interglacial Atmospheric CO₂ Changes
Creators: name: Yu, Jimin
name: Anderson, Robert F.
name: Rohling, Eelco J.
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Chemical oceanography
subject: Geochemistry
subject: FOS: Earth and related environmental sciences
subject: Atmosphere
subject: Atmospheric chemistry

description: Changes in deep ocean carbonate chemistry have profound implications for glacial-interglacial atmospheric CO₂ changes. Here, we review deep ocean carbonate ion concentration ([CO₃²⁻]) changes based on the benthic foraminiferal boron-to-calcium ratio (B/Ca) and their links to global carbon reorganization since the last ice age. Existing deep ocean [CO₃²⁻] reconstructions are consistent with changes in the biological pump, in ocean stratification, and in the associated oceanic alkalinity inventory as key mechanisms for modulating atmospheric CO₂ on glacial-interglacial time scales. We find that the global mean deep ocean [CO₃²⁻] was roughly similar between the Last Glacial Maximum (LGM; 18,000–22,000 years ago) and the Late Holocene (0–5,000 years ago). In view of elevated glacial surface [CO₃²⁻], this indicates enhanced storage of respiratory carbon in a more alkaline deep ocean during the LGM. During early deglaciation, rising [CO₃²⁻] at three locations in the deep ocean suggests a release of deep-sea CO₂ to the atmosphere, probably via the Southern Ocean. Both increased late deglacial carbonate burial in deep-sea sediments due to elevated [CO₃²⁻] and Holocene expansion of coral reefs on newly flooded continental shelves depleted global ocean alkalinity, which reduced CO₂ solubility in seawater and contributed to atmospheric CO₂ rises at these times.
Sonnenfleckenzeichnung Nr. 188.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.07.1998, 07:00, erstellt von Araldo Pittini
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Intrinsic decoherence in the interaction of two fields with a two-level atom
Creators: name: Juárez-Amaro, R.
name: Escudero-Jiménez, J. L.
name: Moya-Cessa, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the interaction of a two-level atom and two fields, one of them classical. We obtain an effective Hamiltonian for this system by using a method recently introduced that produces a small rotation to the Hamiltonian that allows to neglect some terms in the rotated Hamiltonian. Then we solve a variation of the Schrödinger equation that models decoherence as the system evolves through intrinsic mechanisms beyond conventional quantum mechanics rather than dissipative interaction with an environment.
Sizing up entanglement in mutually unbiased bases with Fisher information
Creators: name: Rehacek, J.
name: Hradil, Z.
name: Klimov, A. B.
name: Leuchs, G.
name: Sanchez-Soto, L. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An efficient method for assessing the quality of quantum state tomography is developed. Special attention is paid to the tomography of multipartite systems in terms of unbiased measurements. Although the overall reconstruction errors of different sets of mutually unbiased bases are the same, differences appear when particular aspects of the measured system are contemplated. This point is illustrated by estimating the fidelities of genuinely tripartite entangled states.
description: 7 pages. 3 color figures. Close to the published version
Insights on lava–ice/snow interactions from large-scale basaltic melt experiments
Creators: name: Edwards, Benjamin R.
name: Karson, Jeffrey
name: Wysocki, Robert
name: Lev, Einat
name: Bindeman, Ilya
name: Kueppers, Ulrich
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Paleoclimatology
subject: Geomorphology

description: Quantitative measurements of interactions between lava and ice/snow are critical for improving our knowledge of glaciovolcanic hazards and our ability to use glaciovolcanic deposits for paleoclimate reconstructions. However, such measurements are rare because the eruptions tend to be dangerous and not easily accessible. To address these difficulties, we conducted a series of pilot experiments designed to allow close observation, measurements, and textural documentation of interactions between basaltic melt and ice. Here we report the results of the first experiments, which comprised controlled pours of as much as 300 kg of basaltic melt on top of ice. Our experiments provide new insights on (1) estimates for rates of heat transfer through boundary layers and for ice melting; (2) controls on rates of lava advance over ice/snow; (3) formation of lava bubbles (i.e., Limu o Pele) by steam from vaporization of underlying ice or water; and (4) the role of within-ice discontinuities to facilitate lava migration beneath and within ice. The results of our experiments confirm field observations about the rates at which lava can melt snow/ice, the efficacy with which a boundary layer can slow melting rates, and morphologies and textures indicative of direct lava-ice interaction. They also demonstrate that ingestion of external water by lava can create surface bubbles (i.e., Limu) and large gas cavities. We propose that boundary layer steam can slow heat transfer from lava to ice, and present evidence for rapid isotopic exchange between water vapor and melt. We also suggest new criteria for identifying ice-contact features in terrestrial and martian lava flows.
GEOTRACES: Changing the Way We Explore Ocean Chemistry
Creators: name: Anderson, Robert F.
name: Mawji, Edward
name: Cutter, Gregory A.
name: Measures, Christopher I.
name: Jeandel, Catherine
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Geochemistry
subject: FOS: Earth and related environmental sciences
subject: Biogeochemistry
subject: Chemical oceanography

description: GEOTRACES is an international study of the marine biogeochemical cycles of trace elements and their isotopes (TEIs), designed by marine geochemists to accelerate TEI research under a global program. Combining ocean sections, process studies, data synthesis, and modeling, GEOTRACES will identify and quantify the processes that supply TEIs at ocean boundaries as well as the physical and biological processes that redistribute TEIs within and between ocean basins. Constraining processes that remove TEIs from the ocean will enable complete mass budgets to be generated. Anticipated beneficiaries of GEOTRACES products include scientists studying the sustained health of marine ecosystems and their sensitivity to changes in micronutrient supply; paleoceanographers seeking to reconstruct past changes in the ocean environment, including the ocean's role in climate variability; and scientists and policymakers who seek a better understanding of the transport and fate of contaminants in the ocean. It is hoped that the experiences described here will provide helpful guidance to scientists in other disciplines who wish to advance their fields by organizing coordinated research programs.
Sonnenfleckenzeichnung Nr. 133.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.06.1998, 07:45, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 298.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.12.1998, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 208.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.08.1998, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 125.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.05.1998, 06:45, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Studierende und die Studienplanung: Untersuchung von Herausforderungen und Entwicklungsperspektiven eines digitalen Studienplanungsassistenten
Creators: name: Ochs, Michaela
name: Hirmer, Tobias
name: Henrich, Andreas
Publisher: name: Zenodo
Year: 2023
Subjects: Studienplanung, Digitaler Studienassistent, Webanwendung, Mixed-Method-Untersuchung

description: Die Planung des Studiums ist ein multioptionaler und komplexer Entscheidungsprozess, welcher Studierende vor eine Herausforderung stellt. Mit fortschreitender Digitalisierung der Hochschulen ergeben sich Möglichkeiten, diesen Prozess der Studienplanung für Studierende transparenter und einfacher zu gestalten. Unterstützung versprechen Forschungsprojekte, welche sich mit digitalen Studienassistenten (DSA) beschäftigen. Auch an der Universität Bamberg wird ein solcher DSA derzeit entwickelt und erforscht. Hierzu werden ausgewählte quantitative und qualitative Ergebnisse einer Online-Umfrage (n = 374) zur aktuellen Situation der Studienplanung an der Universität Bamberg im Beitrag vorgestellt und eingeordnet. Zu den größten Herausforderungen zählen u. a. die universitäre Systemvielfalt, die Qualität der bereitgestellten Materialien und Systeme sowie die Inkonsistenz und der Zeitpunkt der Bereitstellung von planungsrelevanten Informationen, wodurch kurzfristige und langfristige Planungsprozesse erschwert werden. Im Beitrag werden wichtige Anknüpfungspunkte und Chancen für einen digitalen Studienassistenten vor dem Hintergrund dieser universitären Herausforderungen skizziert sowie der derzeitige digitale Studienplanungsassistent (DSPA) vorgestellt.
description: Diese Forschung wird im Rahmen der Projekte "Digitale Kulturen der Lehre entwickeln" (DiKuLe) und "Von Lernenden lernen" (VoLL-KI) durchgeführt und von der "Stiftung Innovation in der Hochschullehre" sowie der Förderinitiative "Künstliche Intelligenz in der Hochschulbildung" finanziert.
Anti-Ramsey numbers of graphs with small connected components
Creators: name: Gilboa, Shoni
name: Roditty, Yehuda
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: The anti-Ramsey number, $AR(n,G)$, for a graph $G$ and an integer $n\geq|V(G)|$, is defined to be the minimal integer $r$ such that in any edge-colouring of $K_n$ by at least $r$ colours there is a multicoloured copy of $G$, namely, a copy of $G$ that each of its edges has a distinct colour. In this paper we determine, for large enough $n$, $AR(n,L\cup tP_2)$ and $AR(n,L\cup kP_3)$ for any large enough $t$ and $k$, and a graph $L$ satisfying some conditions. Consequently, we determine $AR(n,G)$, for large enough $n$, where $G$ is $P_3\cup tP_2$ for any $t\geq 3$, $P_4\cup tP_2$ and $C_3\cup tP_2$ for any $t\geq 2$, $kP_3$ for any $k\geq 3$, $tP_2\cup kP_3$ for any $t\geq 1$, $k\geq 2$, and $P_{t+1}\cup kP_3$ for any $t\geq 3$, $k\geq 1$. Furthermore, we obtain upper and lower bounds for $AR(n,G)$, for large enough $n$, where $G$ is $P_{k+1}\cup tP_2$ and $C_k\cup tP_2$ for any $k\geq 4$, $t\geq 1$.
Sonnenfleckenzeichnung Nr. 116.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.05.1998, 09:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 181.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.07.1998, 06:15, erstellt von Araldo Pittini
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Social Justice Working Group - Scientist Spotlights
Creators: name: Marsteller, Pat
name: Prescott, Sarah
name: Bradshaw, Justin
name: Butela, Kristen
name: Furrow, Robert
name: Jindal, Pratima
name: Pigg, Rachel
name: Richardson, Merrie
name: Vemu, Sheela
name: Yang, Suann
Publisher: name: QUBES Educational Resources
Year: 2020

description: This is a reporting out of the work done by participants in the Social Justice Working group that formed as part of the BIOME 2020 Institute, which is focused on the creation and use of scientist spotlights in the classroom.
Sonnenfleckenzeichnung Nr. 295.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.12.1998, 09:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Computational approaches for semantics-aware typographical choices
Creators: name: Kulahcioglu, Tugba
Publisher: name: No Publisher Supplied
Year: 2020

description: Typographic signals carry strong semantic connotations, e.g., they may convey excitement, anger or even sweetness, which empowers them to affect almost any aspect of life, from perception of an email, to the perceived sweetness of a cup of coffee. This thesis explores some of the possibilities that can be offered by computational approaches to support users in understanding and taking advantage of this impact. More specifically, the focus is on learning font semantics from crowdsourced and Web data, and using this information to facilitate font search and recommendation. Among the novel contributions are the use of CNN-based embeddings to represent fonts in attribute learning, leveraging emotion theories and lexical relations to infer font semantics, a multimodal font search method that allows specifying a reference font together with the target semantic additions, enabled by a cross-modal representation of fonts and words, and the proposal of affect-aware word clouds that let users specify a target emotion, which is used to recommend fonts and color palettes with congruent affective connotations.
Architecture of on- and off-axis magma bodies at EPR 9°37–40′N and implications for oceanic crustal accretion
Creators: name: Han, Shuoshuo
name: Carbotte, Suzanne M.
name: Carton, Helene D.
name: Mutter, John Colin
name: Aghaei, Omid
name: Nedimovic, Mladen R.
name: Canales, J. Pablo
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Oceanography
subject: FOS: Earth and related environmental sciences
subject: Submarine geology
subject: Geology
subject: Continents
subject: Geodynamics

description: Crustal accretion at fast-spreading mid-ocean ridges is believed to be concentrated in a narrow zone up to a few kilometers wide centered beneath the ridge axis. However, there is increasing evidence for off-axis magmatism occurring beyond this narrow zone. Here, we present 3D multichannel seismic (MCS) images from the East Pacific Rise 9°37–40′N extending to 11 km on the ridge flanks. In the axial region, two offset axial magma bodies underlie a small ridge-axis discontinuity at ∼9°37′N, displaying an overlapping geometry similar to that of the seafloor structures above. On the ridge flanks, a series of off-axis magma lenses (OAML) are imaged: they are located 2–10 km from the ridge axis, at 700 to 1520 ms two-way travel time below seafloor (bsf) (∼1.6 to 4.5 km bsf), with variable areas ranging from 0.5 km2 to 5.2 km2. The largest body is centered 4 km east of the ridge axis and is composed of a large, continuous, flat-topped lens and a series of small, discontinuous, westward-dipping bodies along its western edge. The flat crest of the OAML lies at approximately the same depth beneath layer 2A as the axial magma lens and we infer that this OAML has formed by aggregation of ascending melts that accumulate at the base of the sheeted dike section. A cluster of reflections underlying the OAML at 1260–1510 ms bsf are observed that may be deeper lenses feeding melts to the upper lens. This largest OAML is associated with Moho travel time anomalies of 120–260 ms within a zone that extends up to 2 km from the edge of the OAML, suggesting a lower crust that is partially molten with lower crustal velocities reduced by 8–18% and/or thicker than normal by up to 1 km. Local volcanic edifices are found above two of the three OAMLs imaged in our study area and are inferred to be the eruptive products of the OAMLs. From the volume of these edifices and the Moho travel time anomalies we estimate the potential contribution of off-axis magmatism to the total volume of the crust to be ∼0.01–3%. The OAMLs imaged in our study area are present over roughly the same distance range as the zone of formation of near-axis seamounts. We speculate that OAMLs and the volcanic edifices found above them are small-scale manifestations of the off-axis magmatism that gives rise to near-axis seamounts.
An introduction to orogenic andesites and crustal growth
Creators: name: Gómez-Tuena, Arturo
name: Straub, Susanne M.
name: Zellmer, Georg F.
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Mineralogy
subject: Geomorphology
subject: Geology
subject: FOS: Earth and related environmental sciences

description: This chapter provides an overview of the current state of research on orogenic andesites. While their importance as proxies to the evolution of the continental crust has long been recognized, andesite genesis has remained highly controversial with a broader consensus yet to be reached. The controversy is fuelled by the question of whether orogenic andesites are primary melts of slab and mantle materials, or instead derivative products of basaltic mantle melts that differentiate in the overlying crust. These hypotheses are addressed in three sections of the book devoted to slab–mantle processes, the complexities of melt differentiation at crustal levels, and models pertaining to arc crustal growth. We believe that cross-fertilization and discussion among seemingly opposite and irreconcilable hypotheses will smooth the pathway towards a holistic communal model of andesite petrogenesis.
Sonnenfleckenzeichnung Nr. 53.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 01.03.1998, 09:45, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Oscillations of the Boundary Layer and High-frequency QPOs
Creators: name: Blinova, A. A.
name: Bachetti, M.
name: Romanova, M. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We observed persistent high-frequency oscillations of the boundary layer near an accreting, weakly-magnetized star in global 3D MHD simulations. The tilted dipole magnetic field is not strong enough to open a gap between the star and the disk. Instead, it forms a highly-wrapped azimuthal field near the surface of the star which slows down rotation of the disk matter, while a small tilt of the field excites oscillations of the boundary layer with a frequency below the Keplerian frequency. This mechanism may be responsible for the high-frequency oscillations in accreting neutron stars, white dwarfs and classical T Tauri stars.
description: 4 pages, 3 figures, conference proceedings: "Physics at the Magnetospheric Boundary", Geneva, Switzerland, 25-28 June, 2013
Antarctic Ozone Depletion and Trends in Tropopause Rossby Wave Breaking
Creators: name: Ndarana, T.
name: Waugh, D. W.
name: Polvani, Lorenzo M.
name: Correa, Gustavo P.
name: Gerber, E. P.
Publisher: name: Columbia University
Year: 2012
Subjects: Atmosphere
Meteorology
Climatic changes

description: Trends in summer tropopause Rossby wave breaking (RWB) are examined using meteorological reanalyses and model integrations. The reanalyses for the last 30 years show large increases in RWB on the equatorward side of the tropospheric jet and weak decreases on the poleward side. Comparable changes in RWB are found in general circulation model integrations whose stratospheric ozone differs between 1960 and 2000 levels, but not in integrations that differ only in their greenhouse gas concentrations and sea-surface temperatures. These results indicate that the formation of the ozone hole has led to changes in RWB frequency during southern summer.
Simple scaling of catastrophic landslide dynamics
Creators: name: Ekström, Göran
name: Stark, Colin P.
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Petrology
subject: Mathematics
subject: FOS: Mathematics

description: Catastrophic landslides involve the acceleration and deceleration of millions of tons of rock and debris in response to the forces of gravity and dissipation. Their unpredictability and frequent location in remote areas have made observations of their dynamics rare. Through real-time detection and inverse modeling of teleseismic data, we show that landslide dynamics are primarily determined by the length scale of the source mass. When combined with geometric constraints from satellite imagery, the seismically determined landslide force histories yield estimates of landslide duration, momenta, potential energy loss, mass, and runout trajectory. Measurements of these dynamical properties for 29 teleseismogenic landslides are consistent with a simple acceleration model in which height drop and rupture depth scale with the length of the failing slope.
Two modes of change in Southern Ocean productivity over the past million years
Creators: name: Jaccard, S. L.
name: Hayes, Christopher T.
name: Martinez-Garcia, A.
name: Hodell, D. A.
name: Anderson, Robert F.
name: Sigman, D. M.
name: Haug, G. H.
Publisher: name: Columbia University
Year: 2013
Subjects: Paleoclimatology
Atmosphere
Chemical oceanography
Hydrology

description: Export of organic carbon from surface waters of the Antarctic Zone of the Southern Ocean decreased during the last ice age, coinciding with declining atmospheric carbon dioxide (CO2) concentrations, signaling reduced exchange of CO2 between the ocean interior and the atmosphere. In contrast, in the Subantarctic Zone, export production increased into ice ages coinciding with rising dust fluxes, thus suggesting iron fertilization of subantarctic phytoplankton. Here, a new high-resolution productivity record from the Antarctic Zone is compiled with parallel subantarctic data over the past million years. Together, they fit the view that the combination of these two modes of Southern Ocean change determines the temporal structure of the glacial-interglacial atmospheric CO2 record, including during the interval of “lukewarm” interglacials between 450 and 800 thousand years ago.
Sonnenfleckenzeichnung Nr. 48.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.02.1998, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Gapless metallic charge-density-wave phase driven by strong electron correlations
Creators: name: Lemański, Romuald
name: Ziegler, Klaus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the transformation from insulator to metal induced by thermal fluctuations within the Falicov-Kimball model. Using the Dynamic Mean Field Theory (DMFT) formalism on the Bethe lattice we find rigorously the temperature dependent Density of States ($DOS$) at half filling in the limit of high dimensions. At zero temperature (T=0) the system is ordered to form the checkerboard pattern and the $DOS$ has the gap $Δ$ at the Fermi level $\varepsilon_F=0$, which is proportional to the interaction constant $U$. With an increase of $T$ the $DOS$ evolves in various ways that depend on $U$. For $U>U_{cr}$ the gap persists for any $T$ (then $Δ>0$), so the system is always an insulator. However, if $U < U_{cr}$, two additional subbands develop inside the gap. They become wider with increasing $T$ and at a certain $U$-dependent temperature $T_{MI}$ they join with each other at $\varepsilon_F$. Since above $T_{MI}$ the $DOS$ is positive at $\varepsilon_F$, we interpret $T_{MI}$ as the transformation temperature from insulator to metal. It appears, that $T_{MI}$ approaches the order-disorder phase transition temperature $T_{O-DO}$ when $U$ is close to 0 or $ U_{cr}$, but $T_{MI}$ is substantially lower than $T_{O-DO}$ for intermediate values of $U$. Having calculated the temperature dependent $DOS$ we study thermodynamic properties of the system starting from its free energy $F$. Then we find how the order parameter $d$ and the gap $Δ$ change with $T$ and we construct the phase diagram in the variables $T$ and $U$, where we display regions of stability of four different phases: ordered insulator, ordered metal, disordered insulator and disordered metal. Finally, we use a low temperature expansion to demonstrate the existence of a nonzero DOS at a characteristic value of U on a general bipartite lattice.
description: 19 pages, 9 figures; submitted to Physical Review B
Sonnenfleckenzeichnung Nr. 206.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.08.1998, 12:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Poetry and the time of labor in the antebellum US
Creators: name: Kimball, Lauren
Publisher: name: No Publisher Supplied
Year: 2020

description: “Poetry and the Time of Labor in the Antebellum US” argues that nineteenth-century poetic genres, forms, and social practices give us unexpected insights into how workers and reformers understood shifting conditions during early industrialization, a transformational period spanning the 1830s through the 1850s that saw changes in how Americans thought about the place and nature of work. The dissertation examines poetic production within and about three variations on a type of experimental antebellum workplace or total institution—the navy frigate, Lowell factory system, and Brook Farm utopian agrarian commune—where laborers both lived and worked, under a unity of authority, place, and time. Poetry is an important, largely unexamined part of the story of these spaces not only because poems were well used by laborers in the places where they worked, but because of the many ways that nineteenth-century poetic genres and forms both represent and reproduce the time of labor. If time-discipline is a staple of worker productivity in a capitalist system, the poems at the center of this study work against such chrononormativity. As such, they reveal the ways that the total work institutions, poised somewhere between nineteenth-century ideas of home and what we now think of as a workplace—while in ways coercive and exploitative—also enabled nonnormative counter cultures and thus can be seen as part of a genealogy of resistance to heteronormativity, gendered labor, consanguine kinship, the sex-gender hierarchies of the middle-class family, and industrial capitalism.
Sonnenfleckenzeichnung Nr. 249.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 12.10.1998, 07:15, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1998

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
A 10Be chronology of south-western Scandinavian Ice Sheet history during the Lateglacial period
Creators: name: Briner, Jason P.
name: Svendsen, John Inge
name: Mangerud, Jan
name: Lohne, Øystein S.
name: Young, Nicolas E.
Publisher: name: Columbia University
Year: 2014
Subjects: Paleoclimatology
Chemistry, Analytic
Climatic changes

description: We present 34 new cosmogenic 10Be exposure ages that constrain the Lateglacial (Bølling–Preboreal) history of the Scandinavian Ice Sheet in the Lysefjorden region, south-western Norway. We find that the classical Lysefjorden moraines, earlier thought to be entirely of Younger Dryas age, encompass three adjacent moraines attributed to at least two ice sheet advances of distinctly different ages. The 10Be age of the outermost moraine (14.0 ± 0.6 ka; n = 4) suggests that the first advance is of Older Dryas age. The innermost moraine is at least 2000 years younger and was deposited near the end of the Younger Dryas (11.4 ± 0.4 ka; n = 7). After abandonment of the innermost Lysefjorden Moraine, the ice front receded quickly towards the head of the fjord, where recession was interrupted by an advance that deposited the Trollgaren Moraine at 11.3 ± 0.9 ka (n = 5). 10Be ages from the inboard side of the Trollgaren Moraine suggest final retreat by 10.7 ± 0.3 ka (n = 7). The late culmination of the Younger Dryas advance contrasts with other sectors of the Scandinavian Ice Sheet where the margin appears to have culminated earlier during the Younger Dryas stadial, followed by retreat during the middle and late part of the Younger Dryas.
title:  A Quantitative Approach to Simulation and Analysis of Storm Water Systems
Creators: name: Paine, John Nathan
Publisher: name: Old Dominion University Libraries
Year: 1986

description: generalized package of hydrologic and hydraulic models and programs is developed for the quantitative analysis of watersheds and drainage networks. The package is microcomputer based and is available to interested parties. Full documentation is included in the Appendix. The approach applies a lengthy historical rainfall record to the system in continuous simulation. One of the most powerful operational hydraulic routing models available is adopted into the package. Output takes the form of statistical predictions of flood stages, discharges, storage requirements, and rainfall analyses for various return-periods. Computer runs are completely summarized. The package was applied to a 969-acre watershed in a 21-year simulation, and the results are presented herein.