cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: The export of barium into the marine benthic realm assessed through Ba/Ca of benthic foraminifera – approaching a novel calibration
Creators: name: Petersen, Jassin
name: Schleinkofer, Nicolai
name: Raddatz, Jacek
name: Bahr, Andre
name: Grunert, Patrick
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Global warming and changes in precipitation patterns are of increasing concern for populations in the Mediterranean region. Exploiting regional paleoenvironmental archives helps to understand how climatic parameters changed regionally in past periods which serve as future climate analogues. Prominently, benthic foraminifera serve as proxy carriers to unravel variability of paleo-temperature, -salinity, -pH, -productivity and –oxygenation. Besides the faunal composition of a defined sediment sample, the geochemical signature recorded in the shells is a constantly investigated proxy signal. Recently, the Ba/Ca has been proposed to track changes in barium content of marine bottom waters. In fact, barium concentrations in the benthic (shallow) marine environment either reflect directly riverine input or export productivity via barite as part of the organic matter sinking to the seafloor. We use core-top material of dead and live (Rose Bengal stained) specimens from a water depth range of 600-1500 m throughout the Northern Aegean Sea, to quantify variability of Ba/Ca across two different species with hyaline shells (Melonis baarleanus and Uvigerina mediterranea) and different sediment sampling depths. Using Laser Ablation ICP-MS we can further assess the intratest variability of Ba/Caforam. Moreover, we compare the Ba/Caforam to measured bottom water [Ba/Ca] from the same locality and consider a multitude of factors for approaching this novel core-top calibration. First results show that the species-specific partition coefficients are matching those of published laboratory experiments and core-top calibrations for hyaline benthic foraminifera. We show the application of high-resolution sampling techniques in the benthic environment to assess the complex present-day situation.
Effect of Packaging Material Sourcing on Production Cost of Bottled Water Producing Companies
Creators: name: Adane, Ephrem
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Sourcing function became an important factor for cost effectiveness. It is adopted to mitigate supply chain disruptions as well as reduce costs by promoting competition between suppliers. This study was conducted with an objective of identifying effect of sourcing on production cost of bottled water producing companies. It conceptualized and developed five dimensions of sourcing :supplier selection, supplier development, contract management and supplier relationship management and tests the relationships between Bottled water producing companies sourcing practices and organizational performance. This study used both descriptive and explanatory research designs. Convenience, stratified and random sampling methods were used. Data were collected from primary sources through questionnaire and analyzed through both descriptive and inferential methods. The descriptive analysis was conducted by using mean and standard deviation. On the other hand, inferential analysis was conducted by using Pearson correlation method and ordinary least square multiple regressions (OLS) method. The result indicated that sourcing has significant effect on production cost efficiency. Supplier selection, supplier development, and supplier relationship management have significant positive effect on the production cost. Based on the findings the researcher recommends that management of the companies has to improve sourcing strategies of the companies.
A Second Decoupling Between Merging Binary Black Holes and the Inner Disc--Impact on the Electromagnetic Counterpart
Creators: name: Fontecilla, Camilo
name: Chen, Xian
name: Cuadra, Jorge
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The coalescence of two supermassive black holes (SMBHs) produces powerful gravitational-wave (GW) radiation and, if gas is present in the vicinity, also an electromagnetic (EM) counterpart. In the standard picture, an EM outburst will be produced when the binary "decouples" from the circum-binary disc and starts "squeezing" the disc inside the secondary orbit, resulting in its quick accretion on to the primary black hole. Here we use analytical arguments and numerical simulations to show that the disc within about $20~R_S$ of a SMBH survives the merger without being depleted. The reason is a "second decoupling": the inner disc thickens due to tidal heating and inefficient cooling, effectively decoupling from the interaction of the binary. We show that this second decoupling quenches the heating sources in the disc ${\cal O}(10^2)$ days before coalescence. This will render the peak UV/X-ray luminosity significantly weaker than previously thought. After the merger, the residual disc cools down and expands, merging with the outer disc rather than being completely accreted. This results in continuous EM emission, hindering the detection of the cut-off and re-brightening proposed in earlier studies.
description: Submitted. Comments welcome!
Functionalised graphene oxide-based nanofiltration membranes with enhanced molecular separation performance
Creators: name: Sharif, Shania
name: Ahmad, Khuram Shahzad
name: Memon, Fida Hussain
name: Rehman, Faisal
name: Soomro, Faheeda
name: Thebo, Khalid Hussain
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Nanofiltration membranes with fast water permeability and good separation efficiency along with acceptable stability are an urgent need for various applications. Herein, graphene oxide (GO) is functionalised with silver nanoparticles (Ag NPs) using different ratios (0.01, 0.02, and 0.03). The Ag NPs have been prepared from orange peel extractive by a green chemical method. The GO/Ag NPs functionalised membranes (ratio 0.03) with thickness ~385 ± 10 nm exhibit an excellent selectivity for various dye molecules with good water permeance, i.e. methylene blue (99 ± 1% rejection and permeability ~287 ± 10 L.m−2.h−1.bar−1), crystal violet (rejection 99 ± 1% and permeability 862 ± 10 L.m−2.h−1.bar−1), safranin O (rejection 99 ± 1% and permeability 625 ± 10 L.m−2.h−1.bar−1) etc. Further, the GO/Ag NPs functionalised membrane (Thickness ~385 ± 10) has been used for organic solvent nanofiltration (OSN), and the membrane exhibits high separation efficiency up to ~97% for several dye molecules in methanol solvent along with good permeance (530 ± 20 L.m−2.h−1.bar1). Besides this, these membranes are stable under different conditions for up to ~70 days. We hope that the good separation efficiency and high permeance of GO/Ag NPs composite membranes can be utilised in various wastewater treatment, desalination, and organic solvent nanofiltration applications.
Amtliche Mitteilungen der Technischen Universität Dortmund Nr. 21/2022
Creators: name: (:Unkn) Unknown
Publisher: name: Technische Universität Dortmund
Year: 2022
Subjects: subject: 080

description: Prüfungsordnung für die Lehramtsbachelorstudiengänge an der Technischen Universität Dortmund vom 1. August 2022
description: Prüfungsordnung für die Lehramtsmasterstudiengänge an der Technischen Universität Dortmund vom 1. August 2022
description: Amtliche Mitteilungen der Technischen Universität Dortmund;2022,22
title: Triple oxygen isotope compositions of iron oxide-apatite deposits – a window into ore formation processes and the ancient atmosphere
Creators: name: Peters, Stefan T.M.
name: Feng, Dingsu
name: Troll, Valentin
name: Pack, Andreas
name: Andersson, Ulf B.
name: Tornos, Fernando
name: Lehmann, Bernd
name: di Rocco, Tommaso
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Iron oxide - apatite (IOA) deposits are magnetite- and apatite-rich rock assemblages that are hosted by intermediate to felsic magmatic rocks, and are frequently mined for iron. The geological formation mechanisms of IOA deposits were suggested to involve either high-temperature silicate, iron oxide and/or sulfate melts or, alternatively, hydrothermal processes at more moderate temperatures. Here, we show that magnetite and apatite samples from the type locality of the deposits in the Kiruna district, northern Sweden, contain up to tens of atom percent oxygen from evaporitic sulfate, as is demonstrated by their anomalously low Δ′17O values. In order to explain this observation in conjunction with field evidence for an igneous origin of the deposits from Kiruna, we propose that the IOA assemblage of Kiruna crystallised from iron-rich sulfate melts and/or from sulfate-rich iron oxide melts. The iron-rich sulfate melts would have formed when evaporite-rich sediments melted by anatexis and scavenged iron from magmatic sources, whereas sulfate-rich iron oxide melts could have formed, e.g., when iron oxide liquids exsolved from silicate magmas and then assimilated evaporites. An inventory study shows that several other Proterozoic and Cambrian IOA deposits have anomalously low Δ′17O values similar to Kiruna, whereas post-Cambrian IOA deposits, in contrast, have more moderate Δ′17O values. IOA deposits may therefore ubiquitously contain evaporite-derived oxygen, with variations in the lowermost Δ′17O values of the deposits reflecting the changing isotope composition of atmospheric O2 through time; and therefore providing an unexpected window into global bioproductivity and atmospheric pCO2 levels of the ancient Earth.
Assessing Housing Rights in the Selected EU Countries
Creators: name: Aidukaitė, Jolanta
name: Ubarevičienė, Rūta
Publisher: name: Zenodo
Year: 2022
Subjects: housing policy
housing rights
welfare state
availability
affordability
adequacy
social housing
home ownership

description: The study aims to explore the state of the housing rights across the European Union (EU) countries and the instruments through which the EU supports housing as a social right. The sub-task, then, is to evaluate the state of the housing rights in selected EU countries, representing typical welfare state models and housing policy traditions: Denmark, the Netherlands, Belgium, Spain, Lithuania, and Poland. The results provide more insight into the current state of housing rights in the European countries and inform how this state has changed in recent decades. The results show that, in general, housing policy decisions and outcomes have shifted towards greater convergence in the EU Member States over the past decades. However, the overall trajectory of changes is not very positive: government expenditure on housing-related policies is declining, and the sector’s performance in ensuring housing availability, affordability and adequacy is not improving, and in some cases is even deteriorating. The analysis of the selected EU countries shows that the EU has a very few instruments to support housing rights. The right to housing is the responsibility of national states and is usually guaranteed at local/municipal level. Although European countries are becoming increasingly similar in terms of various housing indicators, typical housing policy regimes remain. For example, countries with a larger rental sector (private and/or public) have better rates of availability, affordability, and adequacy. Thus, countries which belong to social democratic or conservative-corporatist welfare state and housing policy regimes are in a better position than the Central and Eastern European and Mediterranean countries. Overall, our study shows that to increase housing rights and ensure better housing availability, affordability and adequacy, the public/social housing sector should be expanded. Tenant’s involvement in the management of the social housing sector is crucial to protect the sector from the state (attempts to privatize and stigmatize) and the market (rising prices).
The tensile behaviour of gusset-plate welded connections in very high strength (VHS) tubes
Creators: name: Ling., Tong Wei
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
title: Internal fluid-mineral oxygen exchange: equilibrium clumped isotope behaviour in the most extreme rock-buffered systems?
Creators: name: Staudigel, Philip Tauxe
name: van der Lubbe, Jeroen
name: Tagliavento, Mattia
name: Davies, Amelia
name: Bernecker, Miguel
name: Nooitgedacht, Cas
name: Fiebig, Jens
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Chemical exchange between carbonate and internal water populations represents the lowest possible water/rock fraction in natural materials: with molar ratios possibly lower than one percent. Despite their low abundance, internal water masses in fossils and mineral specimens can play an important role mediating exchange reactions: lowering the energetic barriers for resetting clumped isotopes, as well as supplying oxygen to reset carbonate δ18O values. In heating experiments below 375°C, these reactions do not reach full clumped isotope equilibrium at the experimental temperature. Applying the dual-clumped isotope system to heated and unheated bivalve and coral carbonate reveals that this partial equilibration is due to a mixture of fully equilibrated and unaltered endmembers, as opposed to the carbonate uniformly reaching equilibrium at a cooler temperature. This interpretation appears to contradict the behavior of fluid inclusion δ18O values, which appear to have equilibrated at a cooler temperature. We attribute this discrepancy to the existence of multiple populations of internal water, such as organic-bound water and “true” fluid inclusions of liquid water, which could have different exchange kinetics with the carbonate. Dual-clumped analyses reveal the possibility for calculating peak heating temperature of thermally altered minerals, and future work will focus on finding unambiguous indicators for thermal alteration. An unambiguous indicator for heating will enable the use of new climate archives that otherwise would be disregarded due to the possibility of heating by ancient humans (shell middens), or fossils geothermally heated during burial.
Overview table study sites from The timid invasion: behavioural adjustments and range expansion in a non-native rodent
Creators: name: Eccard, Jana A.
name: Mazza, Valeria
name: Holland, Celia
name: Stuart, Peter
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences
classificationCode: 60801
subject: Animal Behaviour

description: : Expansion zones, site description, and rodent population. Rodent density is indexed by captures per 100 trap nights (excluding recaptures of marked animals)
Evolution of High-Energy Particle Distribution in Mature Shell-Type Supernova Remnants
Creators: name: Zeng, Houdun
name: Xin, Yuliang
name: Liu, Siming
name: Jokipii, J. R.
name: Zhang, Li
name: Zhang, Shuinai
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Multi-wavelength observations of mature supernova remnants (SNRs), especially with recent advances in gamma-ray astronomy, make it possible to constrain energy distribution of energetic particles within these remnants. In consideration of the SNR origin of Galactic cosmic rays and physics related to particle acceleration and radiative processes, we use a simple one-zone model to fit the nonthermal emission spectra of three shell-type SNRs located within 2 degrees on the sky: RX J1713.7-3946, CTB 37B, and CTB 37A. Although radio images of these three sources all show a shell (or half-shell) structure, their radio, X-ray, and gamma-ray spectra are quite different, offering an ideal case to explore evolution of energetic particle distribution in SNRs. Our spectral fitting shows that 1) the particle distribution becomes harder with aging of these SNRs, implying a continuous acceleration process, and the particle distributions of CTB 37A and CTB 37B in the GeV range are harder than the hardest distribution that can be produced at a shock via the linear diffusive shock particle acceleration process, so spatial transport may play a role; 2) the energy loss timescale of electrons at the high-energy cutoff due to synchrotron radiation appears to be always a bit (within a factor of a few) shorter than the age of the corresponding remnant, which also requires continuous particle acceleration; 3) double power-law distributions are needed to fit the spectra of CTB 37B and CTB 37A, which may be attributed to shock interaction with molecular clouds.
description: Accepted for publication in The Astrophysical Journal, 11 pages, 3 figures, 1 table
title: Treatment of metallurgical by-products for metal winning and use as construction material
Creators: name: Wölfler, Christoph
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Every year, millions of tons of by-products from the metal producing industry are dumped as waste and this amount is continuously rising. A competence network, involving Montanuniversität Leoben and seven international partners from industry, was formed to treat this topic. The project "COMMBY- Competnce network for the assessment of metal bearing by-products" consists of three areas: characterisation and evaluation, process development and optimisation, as well as the development of an evaluation procedure for secondary resources.

Among other metallurgical by-products, special attention is paid to the slags generated during lead production. After metallurgical treatment for metal winning, the newly produced slag is evaluated for being used as construction material. Contrary to other approaches, in which these are used as cement substitutes, the focus lies on the substitution of sand. One advantage over the use as cement substitute is the larger particle size and the resulting improvement in eluate values. To achieve this, one possibility is to modify the basicity and investigate its effect on the enclosing behaviour of the slag with respect to environmentally critical compounds such as ZnO and PbO. After evaluating the best conditions for slag production, next steps will include the determination of the optimal amount of sand being replaced by slag without negative impact on the mechanical and chemical properties of the concrete.
Rethinking data and data practice in food systems for ecological futures
Creators: name: Youngsil Lee
Publisher: name: Zenodo
Year: 2023
Subjects: subject: data
subject: materiality
subject: contextualization
subject: speculation
subject: Ecology
subject: FOS: Biological sciences

description: Notions of data are increasingly bound to digital databases and underlying technologies that remove data from the material world in which it is captured - and therefore from more complex social and environmental contexts. In my PhD, I argue that such notions can be problematic, as they interpret reality into fixed forms of representation and limit our ability to retain a changing and evolving reality that extends and impacts the more-than-human world. The research seeks to unpack the representational tendencies of data science and look at alternative notions of data and data practice in order to acknowledge more inclusive ‘ecological dimensions’, which comprise a wide range of heterogeneous and local data sources created, not only by humans and machines, but also plants, animals, and minerals.
Constraints for web document layout
Creators: name: Lin., Kuang-Hsu Richard
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Revealing proton shape fluctuations with incoherent diffraction at high energy
Creators: name: Mäntysaari, Heikki
name: Schenke, Björn
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The differential cross section of exclusive diffractive vector meson production in electron proton collisions carries important information on the geometric structure of the proton. More specifically, the coherent cross section as a function of the transferred transverse momentum is sensitive to the size of the proton, while the incoherent, or proton dissociative cross section is sensitive to fluctuations of the gluon distribution in coordinate space. We show that at high energies the experimentally measured coherent and incoherent cross sections for the production of $J/Ψ$ mesons are very well reproduced within the color glass condensate framework when strong geometric fluctuations of the gluon distribution in the proton are included. For $ρ$ meson production we also find reasonable agreement. We study in detail the dependence of our results on various model parameters, including the average proton shape, analyze the effect of saturation scale and color charge fluctuations and constrain the degree of geometric fluctuations.
description: 16 pages, 17 figures. v2: new references and clarifications, published in PRD
title: Non-classical crystallisation mechanisms in hyaline foraminifer biomineralisation
Creators: name: Arns, Anthea I.
name: Evans, David
name: Schiebel, Ralf
name: Fink, Lothar
name: Mezger, Markus
name: Alig, Edith
name: Linckens, Jolien
name: Jochum, Klaus Peter
name: Schmidt, Martin U.
name: Jantschke, Anne
name: Haug, Gerald H.
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Foraminifers are an ubiquitous group of marine unicellular organisms, which form shells (tests) made of CaCO­3­­. Since their tests can withstand dissolution and accumulate in the sedimentary record­­­­­, foraminifers are a critical part of the global carbon cycle and provide one of the most important archives for paleoclimate research. Therefore, a confident link between environmental parameters and proxy signals recorded in their shells is essential, and a detailed mechanistic understanding of their biomineralisation is vital knowledge.

We have synthesised a diverse array of microscopic and diffraction-based methods to investigate hyaline foraminifer tests on a nanometre- to micrometre scale. We show that chamber walls exhibit a nanogranular fracture surfaces together with a crystallite domain size of approximately 100 nm, and that these nanocrystals are organised in crystallographically aligned micrometre sized units oriented towards the chamber surfaces. From this, we conclude that hyaline foraminifer tests are made of mesocrystals, which strongly indicates the presence of non-classical crystallisation mechanisms during foraminiferal biomineralisation (1).  

Non-classical crystallisation pathways likely involve metastable carbonates, phase transitions to stable phases, and organic matter in diverse functions. Hence, they are expected to distinctly influence isotopic fractionation and trace element incorporation into the final biomineral, which are proxies for environmental conditions. This highlights the necessity to closely investigate non-classical processes in the organisms as well as in experimental models, to reduce uncertainties arising from vital effects and enable accurate and precise reconstructions.

(1) A. I. Arns et al., accepted in Geochemistry, Geophys. Geosystems (2022), doi:10.1029/2022GC010445.
Factors Affecting Public Procurement Transparency and Accountability: at the Federal Government of Ethiopia.
Creators: name: Yitayih, Gebeyaw
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The study sought to answer the questions what are the major factors affecting public procurement transparency and accountability at the federal level and to suggest the possible recommendations. In this study descriptive type of survey was adopted and both primary and secondary data were used. The target population for the study was federal public bodies and from 166 federal public bodies 52 public bodies were selected for the study. The analysis was done using the statistical package for social science (SPSS) version 16. This research finding has shown there is a problem of procurement capacity building program, the complaint review Board do not have the capacity to handle the complaints efficiently, the procurement unit not structured properly and the important procurement documents did not disclosed on the FPPA website and FPPA websites not updated regularly. To overcome this challenges that could affect public procurement transparency and accountability there should be an institution who leads the procurement capacity building program ,it is essential to set up complaint review board who has the potential to review the complaints effectively , establishment of standards procurement unit structure based on their organizational behavior and their expenditure amounts and the FPPA website should be updated regularly to make accessible to the user (Public Bodies) to upload the required information and customers (Suppliers and any interested individuals) to look for information from the website
Precast Paving Notch System for Accelerated Bridge Repair: Development, Evaluation and Implementation
Creators: name: Lee, Yoon-Si
name: Phares, Brent
name: Bierwagen, Dean
Publisher: name: Zenodo
Year: 2014

description: Differential approach pavement settlement and the resulting formation of ‘bumps' at the end of the bridge is a recurring problem for many State highway agencies. One of the main contributing factors in this settlement is deterioration or failure of the bridge paving notch. The conventional replacement procedure typically involves construction of a time-consuming, cast-in-place concrete paving notch followed by replacement of approach slab pavement, which requires the bridge be taken out of service for an extended period of time. The notable number of bridges that exhibit the failing paving notch problem and, more importantly, their location on highly traveled roadways necessitated the development of a standardized, much more quickly-installed replacement method. The objectives of this work were to develop a new, precast paving notch system and to verify and evaluate the structural capacity and implementation feasibility. The precast paving notch system was intended for use in either new construction or for rapid replacement. The goal with rapid replacement would be a bridge approach slab support that can be installed in single-lane-widths to allow for staged construction under traffic during a single overnight closure. The developed precast paving notch system was tested in the laboratory and then implemented on a bridge in Marion County, IA. This paper presents a summary of the laboratory testing and field implementation of the precast paving notch system.
title: A lab on a chip concept for rationalizing hydro-geochemical processes at the pore scale and their integration into larger scale analyses
Creators: name: Poonoosamy, Jenna
name: Lönartz, Mara
name: Yang, Yuankai
name: Deissmann, Guido
name: Bosbach, Dirk
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
Deep geological repositories with a multi-barrier concept are foreseen by various countries for the disposal of high-level radioactive waste. Advanced simulation tools based on a detailed process understanding need to be developed for a close-to-reality description of repository evolution scenarios over time scales of some hundred thousand years. The construction of underground galleries and geotechnical barriers in the host rock formation and the emplacement of nuclear waste packages will create perturbations induced by chemical, thermal and pressure gradients at the interfaces of the different barriers, leading to mineral dissolution and precipitation to achieve re-equilibration. These processes can lead to an alteration of permeability, diffusivity and other physical characteristics of the rock matrix that can have significant effects on subsurface solute and gas transport. The understanding of these phenomena at the pore scale is a prerequisite for the development of predictive conceptual approaches to describe the evolution of the subsurface. Our lab on a chip concept, which combines microfluidic experiments and reactive transport modelling, has proven to be a powerful tool to (i) evaluate the impact of hydraulical heterogeneity on nucleation mechanism, (ii) decode oscillatory zoning exhibited by solid solutions crystallizing in porous media, (iv) assess the effects of confinement of crystallization, and finally (v) parameterize porosity-diffusivity relationships with respect to coupled mineral dissolution-precipitation reactions. In this work, we discuss how this pore-scale knowledge can be integrated into reactive transport models to achieve a realistic description of coupled processes at perturbed interfaces.
Collisionless loss-cone refilling: there is no final parsec problem
Creators: name: Gualandris, Alessia
name: Read, Justin I.
name: Dehnen, Walter
name: Bortolas, Elisa
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Coalescing massive black hole binaries, formed during galaxy mergers, are expected to be a primary source of low frequency gravitational waves. Yet in isolated gas-free spherical stellar systems, the hardening of the binary stalls at parsec-scale separations owing to the inefficiency of relaxation-driven loss-cone refilling. Repopulation via collisionless orbit diffusion in triaxial systems is more efficient, but published simulation results are contradictory. While sustained hardening has been reported in simulations of galaxy mergers with $N \sim 10^6$ stars and in early simulations of rotating models, in isolated non-rotating triaxial models the hardening rate continues to fall with increasing N, a signature of spurious two-body relaxation. We present a novel approach for studying loss cone repopulation in galactic nuclei. Since loss cone repopulation in triaxial systems owes to orbit diffusion, it is a purely collisionless phenomenon and can be studied with an approximated force calculation technique, provided the force errors are well behaved and sufficiently small. We achieve this using an accurate fast multipole method and define a proxy for the hardening rate that depends only on stellar angular momenta. We find that the loss cone is efficiently replenished even in very mildly triaxial models (with axis ratios 1 : 0.9 : 0.8). Such triaxiality is unavoidable following galactic mergers and can drive binaries into the gravitational wave regime. We conclude that there is no final parsec problem.
description: 11 pages, 10 figures, accepted for publication in MNRAS
Equitable retirement income tontines: Mixing cohorts without discriminating
Creators: name: Milevsky, M. A.
name: Salisbury, T. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: General Finance (q-fin.GN)
subject: FOS: Economics and business

description: There is growing interest in the design of pension annuities that insure against idiosyncratic longevity risk while pooling and sharing systematic risk. This is partially motivated by the desire to reduce capital and reserve requirements while retaining the value of mortality credits; see for example Piggott, Valdez and Detzel (2005) or Donnelly, Guillen and Nielsen (2014). In this paper we generalize the natural retirement income tontine introduced by Milevsky and Salisbury (2015) by combining heterogeneous cohorts into one pool. We engineer this scheme by allocating tontine shares at either a premium or a discount to par based on both the age of the investor and the amount they invest. For example, a 55 year-old allocating $\$10,000$ to the tontine might be told to pay $\$$200 per share and receive 50 shares, while a 75 year-old allocating $\$8,000$ might pay $\$$40 per share and receive 200 shares. They would all be mixed together into the same tontine pool and each tontine share would have equal income rights. The current paper addresses existence and uniqueness issues and discusses the conditions under which this scheme can be constructed equitably -- which is distinct from fairly -- even though it isn't optimal for any cohort. As such, this also gives us the opportunity to compare and contrast various pooling schemes that have been proposed in the literature and to differentiate between arrangements that are socially equitable, vs. actuarially fair vs. economically optimal.
Understanding solar torsional oscillations from global dynamo models
Creators: name: Guerrero, G.
name: Smolarkiewicz, P. K.
name: Pino, E. M. de Gouveia Dal
name: Kosovichev, A. G.
name: Mansour, N. N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The phenomenon of solar "torsional oscillations" (TO) represents migratory zonal flows associated with the solar cycle. These flows are observed on the solar surface and, according to helioseismology, extend through the convection zone. We study the origin of the TO using results from a global MHD simulation of the solar interior that reproduces several of the observed characteristics of the mean-flows and magnetic fields. Our results indicate that the magnetic tension (MT) in the tachocline region is a key factor for the periodic changes in the angular momentum transport that causes the TO. The torque induced by the MT at the base of the convection zone is positive at the poles and negative at the equator. A rising MT torque at higher latitudes causes the poles to speed-up, whereas a declining negative MT torque at the lower latitudes causes the equator to slow-down. These changes in the zonal flows propagate through the convection zone up to the surface. Additionally, our results suggest that it is the magnetic field at the tachocline that modulates the amplitude of the surface meridional flow rather than the opposite as assumed by flux-transport dynamo models of the solar cycle.
description: 16 pages, 4 figures, accepted for publication in The Astrophysical Journal Letters
Precast Paving Notch System for Accelerated Bridge Repair: Development, Evaluation and Implementation
Creators: name: Lee, Yoon-Si
name: Phares, Brent
name: Bierwagen, Dean
name: Seo, J.W
Publisher: name: Zenodo
Year: 2014

description: Differential approach pavement settlement and the resulting formation of ‘bumps' at the end of the bridge is a recurring problem for many State highway agencies. One of the main contributing factors in this settlement is deterioration or failure of the bridge paving notch. The conventional replacement procedure typically involves construction of a time-consuming, cast-in-place concrete paving notch followed by replacement of approach slab pavement, which requires the bridge be taken out of service for an extended period of time. The notable number of bridges that exhibit the failing paving notch problem and, more importantly, their location on highly traveled roadways necessitated the development of a standardized, much more quickly-installed replacement method. The objectives of this work were to develop a new, precast paving notch system and to verify and evaluate the structural capacity and implementation feasibility. The precast paving notch system was intended for use in either new construction or for rapid replacement. The goal with rapid replacement would be a bridge approach slab support that can be installed in single-lane-widths to allow for staged construction under traffic during a single overnight closure. The developed precast paving notch system was tested in the laboratory and then implemented on a bridge in Marion County, IA. This paper presents a summary of the laboratory testing and field implementation of the precast paving notch system.
Supplementary Table 1 from Cryptic species in time and space: an assessment of cryptic diversity within eight nominal species of Hydrozoa (Cnidaria)
Creators: name: Miglietta, Maria Pia
name: Pruski, Sarah
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
classificationCode: 60301
subject: Animal Systematics and Taxonomy
classificationCode: 60310
subject: Plant Systematics and Taxonomy

description: Supplementary Table 1: List of all sequences used in this work. Each sequence is identified by its genbank accession #, the locality where it was collected (as reported in its genbank record), and for the GoM specimens only, date of collection (from Pruski and Miglietta 2019)
Computer Based Train Schedule Optimize for Addis Ababa LRT System
Creators: name: Tesfaye, Belachew
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: This research paper work focuses on passenger train schedule modeling; scheduling algorithm which is used to solve the modeled problem and on the deployment of computer Based Train Schedule Optimizer (CBTSO) for Addis Ababa Light Rail Transit (LRT) system. In railway system the guided movement of trains with highly sensitive safety issues together with the expensive nature of trains, railway infrastructures and train crews make the requirement of train and crew schedules inevitable. Schedules are the way to efficiently utilize the available railway resources and meet different constraints like traffic and operator's requirement constraints. There are two methods of scheduling namely manual scheduling (the traditional method) and computer based scheduling. For more than 150 years, traditional scheduling was the typical scheduling method used in almost all railways found in the world. Only the occurrence of high performance computers in the 1990s and the advancements in the operation research methods and artificial intelligence methods offered the opportunity to introduce computer based scheduling methods. Manual based train schedule requires skilled and experienced rail network planners. Further it requires a massive mental effort and takes long time to solve the problem. Further there is a rare chance to find such human powers in a newly starting railway companies like Ethiopian Railway Corporation (ERC). Considering these into account this research work concentrates to develop a Computer Based Train Schedule Optimizer (CBTSO) for Addis Ababa LRT which is currently in its final project stage. In this paper a mathematical model used to formulate train schedule problem and the corresponding algorithm suitable to solve the schedule problem for Addis Ababa LRT system are presented. Eventually, a computer program that is planned to implement the algorithm will be discussed.
Development of a virtual reality training simulator for hysteroscopic procedures
Creators: name: Lim., Fabian Soon Hoh
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Timing of Transients: Quantifying Reaching Times and Transient Behavior in Complex Systems
Creators: name: Kittel, Tim
name: Heitzig, Jobst
name: Webster, Kevin
name: Kurths, Juergen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: When quantifying the time spent in the transient of a complex dynamical system, the fundamental problem is that for a large class of systems the actual time for reaching an attractor is infinite. Common methods for dealing with this problem usually introduce three additional problems: non-invariance, physical interpretation, and discontinuities, calling for carefully designed methods for quantifying transients. In this article, we discuss how the aforementioned problems emerge and propose two novel metrics, Regularized Reaching Time ($T_{RR}$) and Area under Distance Curve (AUDIC), to solve them, capturing two complementary aspects of the transient dynamics. $T_{RR}$ quantifies the additional time (positive or negative) that a trajectory starting at a chosen initial condition needs to reach the attractor after a reference trajectory has already arrived there. A positive or negative value means that it arrives by this much earlier or later than the reference. Because $T_{RR}$ is an analysis of return times after shocks, it is a systematic approach to the concept of critical slowing down [1]; hence it is naturally an early-warning signal [2] for bifurcations when central statistics over distributions of initial conditions are used. AUDIC is the distance of the trajectory to the attractor integrated over time. Complementary to $T_{RR}$, it measures which trajectories are reluctant, i.e. stay away from the attractor for long, or eager to approach it right away. (... shortened for arxiv listing, full abstract in paper ...) New features in these models can be uncovered, including the surprising regularity of the Roessler system's basin of attraction even in the regime of a chaotic attractor. Additionally, we demonstrate the critical slowing down interpretation by presenting the metrics' sensitivity to prebifurcational change and thus how they act as early-warning signals.
description: submitted to: New Journal of Physics
title: Millennial hydrological variability during the MIS3-2 in a lowland freshwater ecosystem of the northern Neotropics
Creators: name: Martinez Abarca, Luis Rodrigo
name: Abstein, Michelle
name: Schenk, Frederik
name: Perez, Liseth
name: Bauersachs, Thorsten
name: Schwalb, Antje
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
We inferred environmental changes in the northern Neotropics using geochemical and mineralogical data from the sediment record of Lake Petén Itzá (Guatemala), covering the Marine Isotope Stages (MIS) 3 (57-29 cal ka BP) and 2 (29-15 cal ka BP). Our study focused on past changes in runoff, lake evaporation, organic matter sources and changes in redox conditions associated with water-level variations. Wet conditions, higher primary productivity and anoxic bottom waters were inferred for MIS3. The transition from MIS3 to MIS2 (39.0-23.0 cal ka BP) was characterized by increasing  lake evaporation and oxic bottom waters, possibly associated with lower water-levels. These conditions reversed during the Last Glacial Maximum (23.0-18.0 cal ka BP) when our data suggest higher runoff and lake productivity and a return to anoxic bottom waters as a result of rising water-levels. Our high-resolution geochemical record reveals the presence of short-term climate stages globally known as Heinrich Stadials (HS), Greenland Interstadials (GI) and Greenland Stadials (GS). The Lake Petén Itzá record indicates that HS and GS were generally dry, while the GI were characterized by higher runoff and wet conditions. Thi variability in runoff correlates with shifts in the average position of the Intertropical Convergence Zone during the Late Pleistocene. The northern Neotropics are strongly affected by current global warming; our data provides important information regarding the potential future behaviour of the northern Neotropics both in long-term and short-term climate change scenarios.
Estimating the Outdoor Recreational Value of Lake Hawassa: an Application of Individual Travel Cost Method (ITCM)
Creators: name: Assefa, Selam
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2013

description: Many natural resources with great potential for outdoor recreation, in Ethiopia, are not studied well and are subject for various kinds of pollution that may even lead them to irreversible damages. Lake Hawassa, no different from this, is a source of natural attraction and a great place for outdoor recreation. But various problems and different values of the Lake are hindering its sustainability as a place where people can recreate outdoor. Hence a study of its value as an outdoor recreational area is necessary and this study uses the Individual Travel Cost Method (ITCM) of environmental valuation technique for this purpose. Therefore with the main objective of estimating the outdoor recreational value of Lake Hawassa, 155 on site visitor samples were surveyed using a face to face interview. From the results age, travel cost and income were found to be significant determinants of demand for outdoor recreation while the other socio economic variables were insignificant. Using the Truncated Poisson Model (TPM) of regression the individual and total annual outdoor recreational benefit of Lake Hawassa was estimated to be Birr 446.3626 and Birr 72,572,760.12 respectively; while the individual and total annual consumer surplus was estimated to be Birr 227.8583 and Birr 37,046,811.82. Based on the results it is suggested that both the city administration and potential investors should use the result of the study as a base for current and future investment decisions. In addition, as the health of the lake, the flora and fauna species are being endangered by pollution of various types, care has to be given by all and there should be the enactment and implementation of policies and rules that hinder polluting activities and encourage protection of the lake to make sure the sustainable use of the resource.
Thom's official directory of the United Kingdom of Great Britain and Ireland for the year 1904 (pages 865-1253)
Creators: name: Alex. Thom & Co.
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Nobility
valueUri: http://id.worldcat.org/fast/1038255
subject: Cities and towns
valueUri: http://id.worldcat.org/fast/861748
subject: Directories
valueUri: http://id.worldcat.org/fast/894589
subject: Business--Directories
valueUri: http://id.worldcat.org/fast/842318

description: "Comprising British, foreign, and colonial directories. Parliamentary directory, Peerage, baronetage, and knightage directory. Naval and military directory. Statistics of Great Britain and Ireland. Government offices directory. University, scientific, and medical directory., Law directory. Ecclesiastical directory. Banking directory. Postal directory. County and borough directory. Lieutenancy and magistracy of Ireland. Post office Dublin city and county directory, with a new coloured map of Dublin and its environs."