cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
E-ASSOC: Enhanced Energy Efficient User ASSOCiation algorithm for future cellular networks
Creators: name: Issar, Mareesh Kumar
Publisher: name: No Publisher Supplied
Year: 2020

description: Future cellular networks need to reduce their carbon footprint in view of rapidly increasing data traffic from emerging applications including Augmented Reality (AR)/ Virtual Reality (VR), autonomous vehicles and Internet of Things (IoT). A potential solution is the addition of small base stations, overlaid upon the macro base station, installed at locations encountering traffic hotspot or a coverage gap. However, the addition of base stations leads to an increase in the overall static network power consumption. Algorithms for energy efficiency aim to strike a balance between network throughput and power consumption. In this work, we evaluate several existing optimization based user association algorithms focusing on load balancing and power minimization metrics. Verification of the performance for all user association algorithms is carried out using MATLAB based system level simulator for a network topology comprising of one macro and four pico base stations considering static users. Motivated by the gains demonstrated using optimization based schemes, we consider the design of a lower complexity class of heuristic user association algorithms with comparable performance. The proposed E-ASSOC algorithm utilizes load at each base station and the difference amongst the two best Signal to Noise Ratios (SNRs) for each user as its threshold metrics. Simulation results demonstrate a gain of 41.26% in the total system throughput along with reduction of 32.96% in the system power consumption. Eventually indicating an increase of 87.83% in energy efficiency over the baseline max-SNR based association algorithm along with decrease of 7.2% for load balancing algorithm and 10.13% for power minimization algorithm. Fairness of the algorithms examined using Jain's Fairness Index (JFI) also shows marked improvement over the baseline scheme.
Equation of state of sticky-hard-sphere fluids in the chemical-potential route
Creators: name: Rohrmann, René D.
name: Santos, Andrés
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The coupling-parameter method, whereby an extra particle is progressively coupled to the rest of the particles, is applied to the sticky-hard-sphere fluid to obtain its equation of state in the so-called chemical-potential route ($μ$ route). As a consistency test, the results for one-dimensional sticky particles are shown to be exact. Results corresponding to the three-dimensional case (Baxter's model) are derived within the Percus-Yevick approximation by using different prescriptions for the dependence of the interaction potential of the extra particle on the coupling parameter. The critical point and the coexistence curve of the gas-liquid phase transition are obtained in the $μ$ route and compared with predictions from other thermodynamics routes and from computer simulations. The results show that the $μ$ route yields a general better description than the virial, energy, compressibility, and zero-separation routes.
description: 13 pages, 7 figures; v2: Results from the zero-separation route have been added
Influence of local and remote SST on North Atlantic tropical cyclone potential intensity
Creators: name: Camargo, Suzana J.
name: Ting, Mingfang
name: Kushnir, Yochanan
Publisher: name: Columbia University
Year: 2013
Subjects: Hurricanes
Ocean-atmosphere interaction
Climatic changes

description: We examine the role of local and remote sea surface temperature (SST) on the tropical cyclone potential intensity in the North Atlantic using a suite of model simulations, while separating the impact of anthropogenic (external) forcing and the internal influence of Atlantic Multidecadal Variability. To enable the separation by SST region of influence we use an ensemble of global atmospheric climate model simulations forced with historical, 1856–2006 full global SSTs, and compare the results to two other simulations with historical SSTs confined to the tropical Atlantic and to the tropical Indian Ocean and Pacific. The effects of anthropogenic plus other external forcing and that of internal variability are separated by using a linear, “signal-to-noise” maximizing EOF analysis and by projecting the three model ensemble outputs onto the respective external forcing and internal variability time series. Consistent with previous results indicating a tampering influence of global tropical warming on the Atlantic hurricane potential intensity, our results show that non-local SST tends to reduce potential intensity associated with locally forced warming through changing the upper level atmospheric temperatures. Our results further indicate that the late twentieth Century increase in North Atlantic potential intensity, may not have been dominated by anthropogenic influence but rather by internal variability.
Scalar probability density function mixing models need not comply with the linearity and independence hypothesis
Creators: name: Hierro, Juan
name: Dopazo, César
Publisher: name: arXiv
Year: 2025
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In a mixture of scalar fields undergoing diffusive processes governed by Fick's law, the concentration at each point evolves linearly in the concentrations at all points and independently from the other concentrations, when one considers a finite differences integration of their evolution equations. However, these properties must not necessarily be enforced in probability density function models, since they are relaxed when conditional expected values are taken.
A numerical algorithm for fully nonlinear HJB equations: an approach by control randomization
Creators: name: Kharroubi, Idris
name: Langrené, Nicolas
name: Pham, Huyên
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Computational Finance (q-fin.CP)
subject: Pricing of Securities (q-fin.PR)
subject: FOS: Mathematics
subject: FOS: Economics and business

description: We propose a probabilistic numerical algorithm to solve Backward Stochastic Differential Equations (BSDEs) with nonnegative jumps, a class of BSDEs introduced in [9] for representing fully nonlinear HJB equations. In particular, this allows us to numerically solve stochastic control problems with controlled volatility, possibly degenerate. Our backward scheme, based on least-squares regressions, takes advantage of high-dimensional properties of Monte-Carlo methods, and also provides a parametric estimate in feedback form for the optimal control. A partial analysis of the error of the scheme is provided, as well as numerical tests on the problem of superreplication of option with uncertain volatilities and/or correlations, including a detailed comparison with the numerical results from the alternative scheme proposed in [7].
The Resurgence of Trumponomics: Implications for the Future of ESG Investments in a Changing Political Landscape
Creators: name: Alhamis, Innocentus
Publisher: name: arXiv
Year: 2025
Subjects: subject: General Economics (econ.GN)
subject: General Finance (q-fin.GN)
subject: FOS: Economics and business
subject: Primary 03C90

description: Public policy shapes the economic landscape, influencing everything from corporate behavior to individual investment decisions. For Environmental, Social, and Governance (ESG) investors, these policy shifts can create opportunities and challenges as they navigate an ever-changing regulatory environment. The contrast between the Trump and Biden administrations offers a striking example of how differing political agendas can affect ESG investments. Trump's first term was marked by deregulation and policies favoring fossil fuels, which created an uncertain environment for sustainable investments. When Biden assumed office, his focus on climate action and clean energy reinvigorated the ESG sector, offering a more stable and supportive landscape for green investments. However, with Trump's return to power in his second term, these policies are being reversed again, leading to further volatility. This paper explores how such dramatic shifts in public policy influence economic strategies and directly impact ESG investors' decisions, forcing them to constantly reassess their portfolios in response to changing political climates.
description: 4 pages. Journal of Social Science Research 2025
Dissipative production of a maximally entangled steady state
Creators: name: Lin, Y.
name: Gaebler, J. P.
name: Reiter, F.
name: Tan, T. R.
name: Bowler, R.
name: Sørensen, A. S.
name: Leibfried, D.
name: Wineland, D. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Entangled states are a key resource in fundamental quantum physics, quantum cryp-tography, and quantum computation [1].To date, controlled unitary interactions applied to a quantum system, so-called "quantum gates", have been the most widely used method to deterministically create entanglement [2]. These processes require high-fidelity state preparation as well as minimizing the decoherence that inevitably arises from coupling between the system and the environment and imperfect control of the system parameters. Here, on the contrary, we combine unitary processes with engineered dissipation to deterministically produce and stabilize an approximate Bell state of two trapped-ion qubits independent of their initial state. While previous works along this line involved the application of sequences of multiple time-dependent gates [3] or generated entanglement of atomic ensembles dissipatively but relied on a measurement record for steady-state entanglement [4], we implement the process in a continuous time-independent fashion, analogous to optical pumping of atomic states. By continuously driving the system towards steady-state, the entanglement is stabilized even in the presence of experimental noise and decoherence. Our demonstration of an entangled steady state of two qubits represents a step towards dissipative state engineering, dissipative quantum computation, and dissipative phase transitions [5-7]. Following this approach, engineered coupling to the environment may be applied to a broad range of experimental systems to achieve desired quantum dynamics or steady states. Indeed, concurrently with this work, an entangled steady state of two superconducting qubits was demonstrated using dissipation [8].
description: 25 pages, 5 figures
Global and Regional Aspects of Tropical Cyclone Activity in the CMIP5 Models
Creators: name: Camargo, Suzana J.
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Atmosphere
subject: Hydrology
subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: Tropical cyclone (TC) activity is analyzed in 14 models from phase 5 of the Coupled Model Intercomparison Project (CMIP5). The global TC activity in the historical runs is compared with observations. The simulation of TC activity in the CMIP5 models is not as good as in higher-resolution simulations. The CMIP5 global TC frequency is much lower than observed, and there is significant deficiency in the geographical patterns of TC tracks and formation. Although all of the models underestimate the global frequency of TCs, the models present a wide range of global TC frequency. The models with the highest horizontal resolution have the highest level of global TC activity, though resolution is not the only factor that determines model TC activity. A cold SST bias could potentially contribute to the low number of TCs in the models. The models show no consensus regarding the difference of TC activity in two warming scenarios [representative concentration pathway 4.5 (RCP4.5) and RCP8.5] and the historical simulation. The author examined in more detail North Atlantic and eastern North Pacific TC activity in a subset of models and found no robust changes across models in TC frequency. Therefore, there is no robust signal across the CMIP5 models in global and regional TC changes in activity for future scenarios. The future changes in various large-scale environmental fields associated with TC activity were also examined globally: genesis potential index, potential intensity, vertical wind shear, and sea level pressure. The multimodel mean changes of these variables in the CMIP5 models are consistent with the changes obtained in the CMIP3 models.
Sonnenfleckenzeichnung Nr. 222.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 03.09.1998, 15:15, 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)
The star cluster frequency throughout the Large Magellanic Cloud
Creators: name: Piatti, Andrés E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We address the issue about the variation of the star cluster frequency (CF) in the Large Magellanic Cloud (LMC) in terms of the cluster spatial distribution. We adopted the LMC regions traced by Harris & Zaritsky (2009) and used an updated version of the cluster database compiled by Baumgardt et al. (2013). The CFs were produced by taking into account an appropriate selection of age bins. Since the uncertainty in a cluster's age can be large compared to the size of the age bins, we account for the fact that a cluster could actually reside in one of a few adjacent age bins. We confirm that there exist some variations of the LMC CFs in terms of their spatial distributions, although some caveats should be pointed out. 30 Doradus resulted to be the region with the highest relative frequency of youngest clusters, while the log($t$) = 9-9.5 (1-3 Gyr) age range is featured by cluster formation at a higher rate in the inner regions than in the outer ones. We compared the observed CFs to theoretical CFs, which are based on the star formation histories of the field stars in each region of the LMC, and found the former predicting more or fewer clusters than observed depending on the field and age range considered.
description: 27 pages, 14 figures, MNRAS, accepted
Boundary-induced instabilities in coupled oscillators
Creators: name: Iubini, Stefano
name: Lepri, Stefano
name: Livi, Roberto
name: Politi, Antonio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A novel class of nonequilibrium phase-transitions at zero temperature is found in chains of nonlinear oscillators.For two paradigmatic systems, the Hamiltonian XY model and the discrete nonlinear Schrödinger equation, we find that the application of boundary forces induces two synchronized phases, separated by a non-trivial interfacial region where the kinetic temperature is finite. Dynamics in such supercritical state displays anomalous chaotic properties whereby some observables are non-extensive and transport is superdiffusive. At finite temperatures, the transition is smoothed, but the temperature profile is still non-monotonous.
description: Published version, minor changes
Sonnenfleckenzeichnung Nr. 157.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.06.1998, 07:30, 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)
CMIP5 Projected Changes in the Annual Cycle of Precipitation in Monsoon Regions
Creators: name: Seth, Anji
name: Rauscher, Sara A.
name: Biasutti, Michela
name: Giannini, Alessandra
name: Camargo, Suzana J.
name: Rojas, Maisa
Publisher: name: Columbia University
Year: 2013
Subjects: Climatic changes
Atmosphere
Hydrology

description: Analyses of phase 5 of the Coupled Model Intercomparison Project (CMIP5) experiments show that the global monsoon is expected to increase in area, precipitation, and intensity as the climate system responds to anthropogenic forcing. Concurrently, detailed analyses for several individual monsoons indicate a redistribution of rainfall from early to late in the rainy season. This analysis examines CMIP5 projected changes in the annual cycle of precipitation in monsoon regions, using a moist static energy framework to evaluate competing mechanisms identified to be important in precipitation changes over land. In the presence of sufficient surface moisture, the local response to the increase in downwelling energy is characterized by increased evaporation, increased low-level moist static energy, and decreased stability with consequent increases in precipitation. A remote mechanism begins with warmer oceans and operates on land regions via a warmer tropical troposphere, increased stability, and decreased precipitation. The remote mechanism controls the projected changes during winter, and the local mechanism controls the switch to increased precipitation during summer in most monsoon regions. During the early summer transition, regions where boundary layer moisture availability is reduced owing to decreases in evaporation and moisture convergence experience an enhanced convective barrier. Regions characterized by adequate evaporation and moisture convergence do not experience reductions in early summer precipitation.This enhanced convective barrier leads to a redistribution of rainfall from early to late summer, and is robust in the American and African monsoons but muddled in Asia. As described here, viewing monsoons from their inherent ties to the annual cycle could help to fingerprint changes as they evolve.
Sonnenfleckenzeichnung Nr. 73.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.03.1998, 08:00, 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): 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. 234.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.09.1998, 07:30, 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. 114.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 14.05.1998, 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): 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)
The SCUBA-2 Cosmology Legacy Survey: demographics of the 450 μm-population
Creators: name: Roseboom, I. G.
name: Dunlop, J. S.
name: Cirasuolo, M.
name: Geach, J. E.
name: Smail, I.
name: Halpern, M.
name: van der Werf, P.
name: Almaini, O.
name: Arumugam, V.
name: Asboth, V.
name: Auld, R.
name: Blain, A.
name: Bremer, M. N.
name: Bock, J.
name: Bowler, R.
name: Buitrago, F.
name: Chapin, E.
name: Chapman, S.
name: Chrysostomou, A.
name: Clarke, C.
name: Conley, A.
name: Coppin, K. E. K.
name: Danielson, A. L. R
name: Farrah, D.
name: Glenn, J.
name: Hatziminaoglou, E.
name: Ibar, E.
name: Ivison, R. J.
name: Jenness, T.
name: van Kampen, E.
name: Karim, A.
name: Mackenzie, T.
name: Marsden, G.
name: Meijerink, R.
name: Michałowski, M. J.
name: Oliver, S. J.
name: Page, M. J
name: Pearson, E.
name: Scott, Douglas
name: Simpson, J. M
name: Smith, D. J. B.
name: Spaans, M.
name: Swinbank, A. M.
name: Symeonidis, M.
name: Targett, T.
name: Valiante, E.
name: Viero, M.
name: Wang, L.
name: Willott, C. J.
name: Zemcov, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the multi-wavelength properties of a sample of 450-μm selected sources from the SCUBA-2 Cosmology Legacy Survey (S2CLS). A total of 69 sources were identified above 4σ in deep SCUBA-2 450-μm observations overlapping the UDS and COSMOS fields and covering 210 sq. arcmin to a typical depth of σ450=1.5 mJy. Reliable cross identification are found for 58 sources (84 per cent) in Spitzer and Hubble Space Telescope WFC3/IR data. The photometric redshift distribution (dN/dz) of 450μm-selected sources is presented, showing a broad peak in the redshift range 1=10^12 +/- 0.8 L_sol, =42 +/- 11 K and =1.6 +/- 0.5, respectively. The relationship between these SED parameters and the physical properties of galaxies is investigated, revealing correlations between T_D and LIR and between β_D and both stellar mass and effective radius. The connection between star formation rate and stellar mass is explored, with 24 per cent of 450 μm sources found to be ``star-bursts'', i.e. displaying anomalously high specific SFRs. However, both the number density and observed properties of these ``star-burst'' galaxies are found consistent with the population of normal star-forming galaxies.
description: 20 pages, 12 figures, accepted for publication in MNRAS
Coastal flooding by tropical cyclones and sea-level rise
Creators: name: Woodruff, Jonathan D.
name: Irish, Jennifer L.
name: Camargo, Suzana J.
Publisher: name: Columbia University
Year: 2013
Subjects: Climatic changes
Environmental sciences
Environmental management

description: The future impacts of climate change on landfalling tropical cyclones are unclear. Regardless of this uncertainty, flooding by tropical cyclones will increase as a result of accelerated sea-level rise. Under similar rates of rapid sea-level rise during the early Holocene epoch most low-lying sedimentary coastlines were generally much less resilient to storm impacts. Society must learn to live with a rapidly evolving shoreline that is increasingly prone to flooding from tropical cyclones. These impacts can be mitigated partly with adaptive strategies, which include careful stewardship of sediments and reductions in human-induced land subsidence.
Sonnenfleckenzeichnung Nr. 164.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 06.07.1998, 07:00, 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)
Sonnenfleckenzeichnung Nr. 285.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.11.1998, 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)
North American Climate in CMIP5 Experiments. Part II: Evaluation of Historical Simulations of Intraseasonal to Decadal Variability
Creators: name: Sheffield, Justin
name: Camargo, Suzana J.
name: Fu, Rong
name: Hu, Qi
name: Jiang, Xianan
name: Johnson, Nathaniel
name: Karnauskas, Kristopher B.
name: Kim, Seon Tae
name: Kinter, Jim
name: Kumar, Sanjiv
name: Langenbrunner, Baird
name: Maloney, Eric
name: Mariotti, Annarita
name: Meyerson, Joyce E.
name: Neelin, J. David
name: Nigam, Sumant
name: Pan, Zaitao
name: Ruiz-Barradas, Alfredo
name: Seager, Richard
name: Serra, Yolande L.
name: Sun, De-Zheng
name: Wang, Chunzai
name: Xie, Shang-Ping
name: Yu, Jin-Yi
name: Zhang, Tao
name: Zhao, Ming
Publisher: name: Columbia University
Year: 2013
Subjects: Climatic changes
Atmosphere
Hydrology

description: This is the second part of a three-part paper on North American climate in phase 5 of the Coupled Model Intercomparison Project (CMIP5) that evaluates the twentieth-century simulations of intraseasonal to multidecadal variability and teleconnections with North American climate. Overall, the multimodel ensemble does reasonably well at reproducing observed variability in several aspects, but it does less well at capturing observed teleconnections, with implications for future projections examined in part three of this paper. In terms of intraseasonal variability, almost half of the models examined can reproduce observed variability in the eastern Pacific and most models capture the midsummer drought over Central America. The multimodel mean replicates the density of traveling tropical synoptic-scale disturbances but with large spread among the models. On the other hand, the coarse resolution of the models means that tropical cyclone frequencies are underpredicted in the Atlantic and eastern North Pacific. The frequency and mean amplitude of ENSO are generally well reproduced, although teleconnections with North American climate are widely varying among models and only a few models can reproduce the east and central Pacific types of ENSO and connections with U.S. winter temperatures. The models capture the spatial pattern of Pacific decadal oscillation (PDO) variability and its influence on continental temperature and West Coast precipitation but less well for the wintertime precipitation. The spatial representation of the Atlantic multidecadal oscillation (AMO) is reasonable, but the magnitude of SST anomalies and teleconnections are poorly reproduced. Multidecadal trends such as the warming hole over the central-southeastern United States and precipitation increases are not replicated by the models, suggesting that observed changes are linked to natural variability.
Sonnenfleckenzeichnung Nr. 225.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 06.09.1998, 06:30, 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)
Variable phosphorus uptake rates and allocation across microbial groups in the oligotrophic Gulf of Mexico
Creators: name: Popendorf, Kimberly J.
name: Duhamel, Solange
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Chemical oceanography

description: Microbial uptake of dissolved phosphorus (P) is an important lever in controlling both microbial production and the fate and cycling of marine P. We investigated the relative role of heterotrophic bacteria and phytoplankton in P cycling by measuring the P uptake rates of individual microbial groups (heterotrophic bacteria and the phytoplankton groups Synechococcus, Prochlorococcus, and picoeukaryotic phytoplankton) in the P-depleted Gulf of Mexico. Phosphorus uptake rates were measured using incubations with radiolabeled phosphate and adenosine triphosphate coupled with cell sorting flow cytometry. We found that heterotrophic bacteria were the dominant consumers of P on both a biomass basis and a population basis. Biovolume normalized heterotrophic bacteria P uptake rate per cell (amol P μm-3 hr-1) was roughly an order of magnitude greater than phytoplankton uptake rates, and heterotrophic bacteria were responsible for generally greater than 50% of total picoplankton P uptake. We hypothesized that this variation in uptake rates reflects variation in cellular P allocation strategies, and found that, indeed, the fraction of cellular P uptake utilized for phospholipid production was significantly higher in heterotrophic bacteria compared to cyanobacterial phytoplankton. These findings indicate that heterotrophic bacteria have a uniquely P-oriented physiology and play a dominant role in cycling dissolved P.
Wirtschaftliche und technische Gesichtspunkte der Bearbeitung von kohlenstofffaserverstärkten Bauteilen durch roboterbasierte kombinierte Laser- und Fräsbearbeitung.
Publisher: name: Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.
Year: 2019
Subjects: CFK
Kosten
Laserbearbeitung
Fräsbearbeitung
Kosten- und Leistungsrechnung
Automatisierung
Bearbeitungszelle
Kombinierte Bearbeitung

description: Auf dem DLRK-Kongresses 2017 wurde im Rahmen des Beitrages "ENDBEARBEITUNG VON THERMOPLASTISCHEN, KOHLENSTOFFFASERVERSTÄRKTEN BAUTEILEN DURCH EINE KOMBINIERTE LASER- UND FRÄSBEARBEITUNG" eine prototypische Bearbeitungszelle vorgestellt und ihre Funktionsweise am Beispiel der Bearbeitung thermoplastischer Bauteile aufgezeigt. Dabei wurden sowohl die Anlagentechnik als auch die Bearbeitungsprozesskette ausführlich erläutert. Motivation hierfür war das steigende Interesse an Konzepten der automatisieren Nachbearbeitung von faserverstärkten Bauteilen im Kontext des erhöhten Preisdrucks und der Forderung nach einer gesteigerten Produktionsmenge pro Zeiteinheit. Für die sinnvolle Umsetzung dieses Konzeptes in die Praxis sind neben den technischen auch wirtschaftliche Gesichtspunkte zu berücksichtigen. Deshalb werden in diesem Beitrag neben den wichtigsten technischen Sachverhalten Überlegungen zu Kostengesichtspunkten der dargestellten Bearbeitungszelle angestellt. Dabei wird auf die Kosten- und Leistungsrechnung sowie deren Auswirkungen auf die Wirtschaftlichkeit in Bezug auf diese Anlagenkonfiguration eingegangen. Aufbauend auf diesen Erläuterungen erfolgt dann am Beispiel der beschriebenen prototypischen Bearbeitungszelle exemplarisch die Darstellung des Maschinenstundensatzes basierend auf einem Anwendungsszenario.
Study of the N N eta' production with COSY-11
Creators: name: Czerwiński, E.
name: Moskal, P.
name: Silarski, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We describe a new high precision measurement of the production cross-section for the eta' meson in proton-proton collisions for five beam momenta at low access energy region Q conducted at the COSY-11 detection system together with an updated results of all other previous measurements of cross-section for (pp-->pp eta') at COSY-11.
description: Proceedings from the II International Symposium on Mesic Nuclei, Cracow, September 22 - 25, 2013, 7 pages, 2 figures, 1 table
Sonnenfleckenzeichnung Nr. 252.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 15.10.1998, 07:30, erstellt von Edy Alge
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)
Implementing FAST in an Institutional Repository
Creators: name: Luna Lucero, Brian
name: Wacker, Melanie
Publisher: name: Columbia University
Year: 2015
Subjects: Library science

description: Columbia University Libraries/Information Services began using FAST selectively in original cataloging of pamphlets in 2014 and also moved to using FAST in digital projects in early 2015. Based on these positive experiences, the decision was made to also use FAST in Columbia’s digital repository Academic Commons. This lightning talk will address the unique challenges faced by the Academic Commons team to move a large scale MODS-based repository of over 15,000 items from the very high level ProQuest subject terms to the much more granular FAST headings -- both for new cataloging going forward as well as for the existing records.
Azimuthal Photon Correlations in Ultra-relativistic p+A, Pb+Pb and Au+Au Reactions
Creators: name: Buesching, Henner
Publisher: name: Zenodo
Year: 2002
Subjects: photon
azimuthal
correlations
au+au
run01
emcal

description: Doctoral work on azimuthal photon correlations in ultra-relativistic p+A, Pb+Pb and Au+Au reactions.
Strategies for Expanding e-Journal Preservation
Creators: name: Regan, Shannon L.
Publisher: name: Columbia University
Year: 2015
Subjects: Library science

description: In 2012 the Keepers Registry compared the e-journal holdings from Columbia, Cornell, and Duke to seven preservation agencies and discovered that only 22-27% of titles were preserved. Influenced by the Keepers Registry study, Columbia and Cornell Universities (2CUL) secured funding for a project to specifically evaluate strategies for expanding e-journal preservation. The responsibility for and the initiative to preserve electronic journal content is neither clear nor easy, and knowing the preservation status of an e-journal is not currently a basic step within the NASIG Core Competencies for Electronic Resources Librarians life cycle of electronic resources management. This presentation will highlight the methods and strategies for expanding e-journal preservation developed as part of the Mellon Foundation supported project at 2CUL. A significant focus of the presentation will be on inspiring electronic resources librarians at a breadth of libraries and institutions to integrate these methods and strategies for preservation into the day-to-day workflow of electronic resource management. A wide range of e-journal categories are evaluated within the scope of the project including: content direct from publishers, small and society publishers, open access e-journals, full-text content in databases, and university generated e-journals. Attendees will learn techniques for identifying at risk e-journals, integrating preservation into license negotiation with publishers, tracking the preservation status of e-journals, and developing relationships with existing preservation agencies. The quality of future of scholarship and teaching hinges on the preservation of the scholarly record.
New zeal for new New Zealand earthworms (Acanthodrilidae, Octochaetidae, Megascolecidae, Lumbricidae: Oligochaeta: Annelida)
Creators: name: Blakemore, R.J.
Publisher: name: Zenodo
Year: 2010
Subjects: Megadriles, earthworms, eco-taxonomy, species, NZ, Annelida, taxonomy, worms.

description: Description of new and known New Zealand native megadrile earthworms with review updated checklist of all currently known species.
description: Several copies of CD file deposited in institutions and libraries and collections in compliance with ICZN requirements.
The lack of star formation gradients in galaxy groups up to z~1.6
Creators: name: Ziparo, Felicia
name: Popesso, Paola
name: Biviano, Andrea
name: Finoguenov, Alexis
name: Wuyts, Stijn
name: Wilman, Dave
name: Salvato, Mara
name: Tanaka, Masayuki
name: Ilbert, Olivier
name: Nandra, Kirpal
name: Lutz, Dieter
name: Elbaz, David
name: Dickinson, Mark
name: Altieri, Bruno
name: Aussel, Herve'
name: Berta, Stefano
name: Cimatti, Andrea
name: Fadda, Dario
name: Genzel, Reinhard
name: Flo'ch, Emeric Le
name: Magnelli, Benjamin
name: Nordon, R.
name: Poglitsch, Albrecht
name: Pozzi, Francesca
name: Sanchez-Portal, Miguel
name: Tacconi, Linda
name: Bauer, Franz
name: Brandt, W. Niel
name: Cappelluti, Nico
name: Cooper, M.
name: Mulchaey, John
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the local Universe, galaxy properties show a strong dependence on environment. In cluster cores, early type galaxies dominate, whereas star-forming galaxies are more and more common in the outskirts. At higher redshifts and in somewhat less dense environments (e.g. galaxy groups), the situation is less clear. One open issue is that of whether and how the star formation rate (SFR) of galaxies in groups depends on the distance from the centre of mass. To shed light on this topic, we have built a sample of X-ray selected galaxy groups at 010^10.3 M_sun in order to have a high spectroscopic completeness. As we use only spectroscopic redshifts, our results are not affected by uncertainties due to projection effects. We use several SFR indicators to link the star formation (SF) activity to the galaxy environment. Taking advantage of the extremely deep mid-infrared Spitzer MIPS and far-infrared Herschel PACS observations, we have an accurate, broad-band measure of the SFR for the bulk of the star-forming galaxies. We use multi-wavelength SED fitting techniques to estimate the stellar masses of all objects and the SFR of the MIPS and PACS undetected galaxies. We analyse the dependence of the SF activity, stellar mass and specific SFR on the group-centric distance, up to z~1.6, for the first time. We do not find any correlation between the mean SFR and group-centric distance at any redshift. We do not observe any strong mass segregation either, in agreement with predictions from simulations. Our results suggest that either groups have a much smaller spread in accretion times with respect to the clusters and that the relaxation time is longer than the group crossing time.
description: Accepted for publication in MNRAS
Sonnenfleckenzeichnung Nr. 11.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.01.1998, 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): 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)
Arctic biostratigraphic heterochroneity
Creators: name: Kent, Dennis V.
name: McKenna, Malcolm C.
name: Opdyke, Neil D.
name: Flynn, John J.
name: MacFadden, Bruce J.
Publisher: name: Columbia University
Year: 1984
Subjects: Geology, Stratigraphic
Paleoclimatology

description: Hickey et al. described the magnetic stratigraphy (not magnetic anomaly profile) and biostratigraphy of Upper Cretaceous and Lower Cenozoic sediments of the Eureka Sound Formation of arctic Canada and claimed that there is substantial heterochroneity of biostratigraphic units. Their conclusions, if correct, have great ramifications with respect to the correlation and evolution of the North American biota and to the underlying bases for biostratigraphy in general. Although the conclusions rest almost entirely on the magnetostratigraphy of the sediments in question, the data as presented cannot be assessed; indeed, the paleomagnetic work is essentially unpublished except in abstract (5). Nevertheless, the summary of numeric data leads us to believe that the magnetic stratigraphy is suspect and that the correlation of supposed magnetozones to the geomagnetic polarity time scale is very insecure.
Surface roughness analysis of the hydrophilic SiO_2/TiO_2 nano bi-layers by Level crossing approach
Creators: name: Daryaei, E.
name: Tabar, M. Reza Rahimi
name: Moshfegh, A. Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effect of etching time on the statistical properties of the hydrophilic surface of SiO_2/TiO_2/Glass nano bi-layer has been studied using Atomic Force Microscopy (AFM) and stochastic approach based on the level crossing analysis. We have created a rough surface of the hydrophilic SiO_2/TiO_2 nano bi-layer system by using 26% Potassium Hydroxide (KOH) solution. Measuring the average apparent contact angle assessed the degree of hydrophilicity and the optimum condition was determined at 10 min etching time. Level crossing analysis based on AF images provided deeper insight into the microscopic details of the surface topography. For different etching time, it has been shown that the average frequency of visiting a height with positive slope behaves Gaussian for heights near the mean value and obeys power law for the heights far away from the mean value. Finally, by applying the generalized total number of crossings with positive slope, it was found that the both high heights and deep valleys of the surface are extremely effective in hydrophilic degree of the SiO_2/TiO_2/Glass nano bi-layer investigated system.
Embeddings between weighted local Morrey-type spaces and weighted Lebesgue spaces
Creators: name: Mustafayev, R. Ch.
name: Ünver, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: In this paper, the embeddings between weighted local Morrey-type spaces and weighted Lebesgue spaces are investigated.
4-point vertices from the 2PI and 4PI Effective Actions
Creators: name: Carrington, M. E.
name: Fu, Wei-Jie
name: Mikula, P.
name: Pickering, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a symmetric scalar theory with quartic coupling in 2- and 3-dimensions and compare the self-consistent 4-point vertex obtained from the 4PI effective action with the Bethe-Salpeter 4-vertex from 2PI effective action. At zero external momenta the two vertices agree well with each other when the coupling strength is small, but differences between them become more and more pronounced as the coupling strength is increased. We also study the momentum dependence of the two vertices and show that for certain momentum configurations they are almost identical, but differ for general momentum arguments.
description: 17 pages, 10 figures
Sonnenfleckenzeichnung Nr. 145.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.06.1998, 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)