bluuebunny/crossref_metadata_2025_split huggingface dataset:
To Donate or Not To Donate: Visual Framing of the Rohingya Refugees, Attitude Towards Refugees and Donation Intentions
Authors: Borah Porismita , Irom Bimbisar 
Published: February 2021

AbstractVisual representations of refugees likely have a determinative function in the ways policies are written and aid is dispensed for crises resolution efforts. We use theoretical concepts from the visual framing literature and two studies—a content analysis and an experiment—to examine the effects of six visual frames. We study the content of newspapers from four countries for the following visual frames: ‘individual’, ‘massified’, ‘mother and child’, ‘father and child’, ‘receiving aid’ and ‘working refugees.’ Next, we examine the impact of these frames on intention to donate. Findings demonstrate that individuals with higher positive attitude towards refugees showed higher intention to donate. However, among these participants, intention to donate was highest in the ‘individual’ frame condition. On the other hand, among the participants with lower positive attitude towards refugees, the highest intention to donate was in the ‘working refugees’ frame condition. Implications are discussed.
Retooling the Energy Charter Treaty for climate change mitigation: lessons from investment law and arbitration
Authors: Cima Elena 
Published: February 2021

Abstract
In 2017, the Energy Charter Treaty (ECT) began a modernization process aimed at updating, clarifying, and modernizing a number of provisions of the Treaty. Considering the scope of application of the Treaty—cooperation in energy trade, transit, and investment—there is hardly any doubt that the modernization kicked off in 2017 offers a springboard for constructive reform and a unique opportunity to bring the Treaty closer in line with the objectives of the Paris Agreement. Although none of the items selected by the Energy Charter Conference and open for discussion and reform mention climate change or clean energy, a careful analysis of the relevant practice in both treaty drafting and adjudication can provide valuable insights as to how to steer the discussions on some of the existing items in a climate-friendly direction. The purpose of this article is to rely on this relevant practice to explore promising avenues to ‘retool’ the Treaty for climate change mitigation, in other words, to imagine a Treaty that would better reflect climate change concerns and clean energy transition goals.
The barrier to radial oxygen loss impedes the apoplastic entry of iron into the roots ofUrochloa humidicola
Authors: Jiménez Juan de la Cruz , Clode Peta L , Signorelli Santiago , Veneklaas Erik J , Colmer Timothy D , Kotula Lukasz 
Published: February 2021

AbstractLack of O2 and high concentrations of iron (Fe) and manganese (Mn) commonly occur in waterlogged soils. The development of a barrier to impede radial O2 loss (ROL) is a key trait improving internal O2 transport and waterlogging tolerance in plants. We evaluated the ability of the barrier to ROL to impede the entry of excess Fe into the roots of the waterlogging-tolerant grass Urochloa humidicola. Plants were grown in aerated or stagnant deoxygenated nutrient solution with 5 µM or 900 µM Fe. Quantitative X-ray microanalysis was used to determine cell-specific Fe concentrations at two positions behind the root apex in relation to ROL and the formation of apoplastic barriers. At a mature zone of the root, Fe was ‘excluded’ at the exodermis where a suberized lamella was evident, a feature also associated with a strong barrier to ROL. In contrast, the potassium (K) concentration was similar in all root cells, indicating that K uptake was not affected by apoplastic barriers. The hypothesis that the formation of a tight barrier to ROL impedes the apoplastic entry of toxic concentrations of Fe into the mature zones of roots was supported by the significantly higher accumulation of Fe on the outer side of the exodermis.
The Law of Investment Treaties
Authors: Salacuse Jeswald W 
Published: February 2021

Abstract
Investment treaties grant special international protection to foreign investors, and give them a means to enforce those rights against States in which they have invested. This book examines systematically the law of international investment treaties. Although the precise provisions of investment treaties are not uniform, virtually all investment treaties address the same issues. This book examines those issues in detail, including the scope of application, conditions for the entry of foreign investment, and general standards of treatment of foreign investments. Investment treaty law has continued to evolve rapidly and dramatically since publication of the second edition of this work in 2015. The field has seen considerable growth in the number and scope of investment treaties, now estimated at 3300, and investor-state arbitrations cases, which reached over 1000 in 2020. Beyond growth, the field has also experienced significant changes and reforms. In 2018, eleven Pacific Basin Countries, despite the withdrawal of the United States, forged ahead to conclude the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTTP), a potentially far reaching regional trade and investment agreement. The next year, the three north American nations replaced the North American Free Trade Agreement (NAFTA) with the United States-Mexico-Canada Agreement (USMCA). And in 2020, European Union member states terminated over 100 intra-EU BITs, leaving intra-EU investors to rely on EU law and legal processes alone for protection from unfavourable government acts. This edition incorporates a consideration of all of these and other reforms into its analysis of the body of law created by investment treaties since World War II.
Treatment of State Obligations (the ‘Umbrella Clause’)
Authors: Salacuse Jeswald W 
Published: February 2021

Abstract
This chapter explores umbrella clauses. In order to protect investor–state commitments and obligations from obsolescence, many investment treaties contain a clause defining the treatment that the host state will give to obligations it has made to investors or investments covered by the treaty. Known commonly as ‘umbrella clauses’, such provisions generally stipulate that ‘each Contracting Party shall observe any obligation it may have entered into with regard to the investments of investors of the other Contracting Party’. The umbrella clause creates an exception to a well-established principle of international law concerning state contracts with, and obligations to, foreign investors. Its intent is to impose an international treaty obligation on host countries that requires them to respect obligations they have entered into with respect to investments protected by the treaty. This places such obligations under the protective umbrella of international law, not just the domestic law that would otherwise normally apply exclusively. The chapter then looks at the formulations and application of the umbrella clause.
Discharge of Primary Obligations
Authors: Stannard John E , Capper David 
Published: February 2021

Abstract
This chapter examines discharge of primary obligations, considering Lord Diplock's classic analysis of the termination process. The first and most important consequence of termination is that both parties are, as a general rule, discharged from their outstanding primary obligations under the contract. This applies both to the innocent party and to the party in default. Though Lord Diplock speaks in terms of the primary obligations of both parties being discharged in so far as they are not already performed at the time of termination, this is not always the case. On the contrary, such obligations can still remain binding in so far as they have already accrued. Given that most the cases on this point concern obligations to pay money, the issue here is the extent to which either party can sue for the relevant sum as a liquidated debt despite termination having taken place. The chapter then looks at the effect of termination on ‘ancillary’ terms, most notably dispute resolution clauses and clauses excluding or limiting the liability of one or other of the parties.
Damages on Termination
Authors: Stannard John E , Capper David 
Published: February 2021

Abstract
This chapter focuses on damages on termination for breach of contract. Though there may be other measures used, ‘loss of bargain’ damages is the normal rule in cases of termination. The purpose of loss of bargain damages is to give the injured party the market value of the benefit of which he has been deprived through the breach. The phrase ‘loss of bargain’ can be used in two different senses. The first, and more general sense, is to denote the loss suffered by the claimant through being deprived of the benefit of the promise broken. However, the term is also used more precisely to denote the loss of the benefits of future performance of obligations released following discharge or termination. The chapter then examines when such damages are available following termination and how loss of bargain damages are calculated in such cases. Though most cases of termination will lead to loss of bargain damages, there may be situations where this is not an appropriate measure. These situations include the recovery of reliance loss and the recovery for non-pecuniary losses.
Contentious Cases before ITLOS and the Seabed Disputes Chamber
Authors: Kittichaisaree Kriangsak 
Published: February 2021

Abstract
This chapter examines what constitutes a dispute under the 1982 United Nations Convention on the Law of the Sea (UNCLOS). The International Tribunal for the Law of the Sea (ITLOS) concurs with the International Court of Justice that a dispute is a disagreement on a point of law or fact, a conflict of legal views or interests, or the positive opposition of the claim of one party by the other, which need not necessarily be stated expressis verbis, and that, in the determination of the existence of a dispute, the position or the attitude of a party can be established by inference, whatever the professed view of that party. When there is a dispute between the parties at the time of the institution of proceedings, the dispute must be one over which ITLOS has jurisdiction. To determine whether a dispute between the disputing parties in a particular case concerns the interpretation or application of UNCLOS, ITLOS must establish a link between the facts advanced by the applicant and the provisions of UNCLOS referred to by it and show that such provisions can sustain the claims submitted by the applicant. In contentious cases, the Seabed Disputes Chamber shall be open to States Parties to UNCLOS, the International Seabed Authority, the Enterprise, State enterprises, and State-sponsored natural legal persons carrying out activities in the Area.
VINTERGATAN – II. The history of the Milky Way told by its mergers
Authors: Renaud Florent , Agertz Oscar , Read Justin I , Ryde Nils , Andersson Eric P , Bensby Thomas , Rey Martin P , Feuillet Diane K 
Published: February 2021

ABSTRACT
Using the VINTERGATAN cosmological zoom simulation, we explore the contributions of the in situ and accreted material, and the effect of galaxy interactions and mergers in the assembly of a Milky Way-like galaxy. We find that the initial growth phase of galaxy evolution, dominated by repeated major mergers, provides the necessary physical conditions for the assembly of a thick, kinematically hot disc populated by high-[α/Fe] stars, formed both in situ and in accreted satellite galaxies. We find that the diversity of evolutionary tracks followed by the simulated galaxy and its progenitors leads to very little overlap of the in situ and accreted populations for any given chemical composition. At a given age, the spread in [α/Fe] abundance ratio results from the diversity of physical conditions in VINTERGATAN and its satellites, with an enhancement in [α/Fe] found in stars formed during starburst episodes. Later, the cessation of the merger activity promotes the in situ formation of stars in the low-[α/Fe] regime, in a radially extended, thin and overall kinematically colder disc, thus establishing chemically bimodal thin and thick discs, in line with observations. We draw links between notable features in the [Fe/H]-[α/Fe] plane with their physical causes, and propose a comprehensive formation scenario explaining self-consistently, in the cosmological context, the main observed properties of the Milky Way.
Galaxy evolution across environments as probed by the ages, stellar metallicities, and [α /Fe] of central and satellite galaxies
Authors: Gallazzi Anna R , Pasquali A , Zibetti S , Barbera F La 
Published: February 2021

ABSTRACT
We explore how the star formation and metal enrichment histories of present-day galaxies have been affected by environment combining stellar population parameter estimates and group environment characterization for SDSS DR7. We compare stellar ages, stellar metallicities, and crucially, element abundance ratios $\rm [\alpha /Fe]$ of satellite and central galaxies, as a function of their stellar and host group halo mass, controlling for the current star formation rate and for the infall epoch. We confirm that below M* ∼ 1010.5 M⊙ satellites are older and slightly metal richer than equally massive central galaxies. In contrast, we do not detect any difference in their $\rm [\alpha /Fe]$: $\rm [\alpha /Fe]$ depends primarily on stellar mass and not on group hierarchy nor host halo mass. We also find that the differences in the median age and metallicity of satellites and centrals at stellar mass below $\rm 10^{10.5}\,M_\odot$ are largely due to the higher fraction of passive galaxies among satellites and as a function of halo mass. We argue that the observed trends at low masses reveal the action of satellite-specific environmental effects in a ‘delayed-then-rapid’ fashion. When accounting for the varying quiescent fraction, small residual excess in age, metallicity and $\rm [\alpha /Fe]$ emerge for satellites dominated by old stellar populations and residing in haloes more massive than 1014 M⊙, compared to equally massive central galaxies. This excess in age, metallicity, and $\rm [\alpha /Fe]$ pertain to ancient infallers, i.e. satellites that have accreted on to the current halo more than 5 Gyr ago. This result points to the action of environment in the early phases of star formation in galaxies located close to cosmic density peaks.
An ALMA survey of the S2CLS UDS field: optically invisible submillimetre galaxies
Authors: Smail Ian , Dudzevičiūtė U , Stach S M , Almaini O , Birkin J E , Chapman S C , Chen Chian-Chou , Geach J E , Gullberg B , Hodge J A , Ikarashi S , Ivison R J , Scott D , Simpson Chris , Swinbank A M , Thomson A P , Walter F , Wardlow J L , van der Werf P 
Published: February 2021

ABSTRACT
We analyse a robust sample of 30 near-infrared-faint (KAB &gt; 25.3, 5σ) submillimetre galaxies (SMGs) selected from a 0.96 deg2 field to investigate their properties and the cause of their faintness in optical/near-infrared wavebands. Our analysis exploits precise identifications based on Atacama Large Millimeter Array (ALMA) 870-μm continuum imaging, combined with very deep near-infrared imaging from the UKIDSS Ultra Deep Survey. We estimate that SMGs with KAB &gt; 25.3 mag represent 15 ± 2 per cent of the total population brighter than S870 = 3.6 mJy, with a potential surface density of ∼450 deg−2 above S870 ≥ 1 mJy. As such, they pose a source of contamination in surveys for both high-redshift ‘quiescent’ galaxies and very high redshift Lyman-break galaxies. We show that these K-faint SMGs represent the tail of the broader submillimetre population, with comparable dust and stellar masses to KAB ≤ 25.3 mag SMGs, but lying at significantly higher redshifts (z = 3.44 ± 0.06 versus z = 2.36 ± 0.11) and having higher dust attenuation (AV = 5.2 ± 0.3 versus AV = 2.9 ± 0.1). We investigate the origin of the strong dust attenuation and find indications that these K-faint galaxies have smaller dust continuum sizes than the KAB ≤ 25.3 mag galaxies, as measured by ALMA, which suggests their high attenuation is related to their compact sizes. We identify a correlation of dust attenuation with star formation rate surface density (ΣSFR), with the K-faint SMGs representing the higher ΣSFR and highest AV galaxies. The concentrated, intense star formation activity in these systems is likely to be associated with the formation of spheroids in compact galaxies at high redshifts, but as a result of their high obscuration these galaxies are completely missed in ultraviolet, optical, and even near-infrared surveys.
Detectability of gravitational waves from a population of inspiralling black holes in Milky Way-mass galaxies
Authors: Emami Razieh , Loeb Abraham 
Published: February 2021

ABSTRACT
We estimate the rate of inspiral for a population of stellar mass black holes in the star cluster around the supermassive black hole (SMBHs) at the centre of Milky Way mass galaxies. Our approach is based on an orbit averaged Fokker Planck approach. This is then followed by a post-processing approach, which incorporates the impact of the angular momentum diffusion and the GW dissipation in the evolution of system. We make a sample of 104 BHs with different initial semimajor and eccentricities with the distribution of fc(a)/a and e, respectively, where fc(a) refers to the phase–space distribution function for cth species. Angular momentum diffusion leads to an enhancement in the eccentricity of every system in the above sample and so increases the rate of inspiral. We compute the fraction of time that every system spends in the LISA band with the signal-to-noise ratio $\rm {S/N} \ge 8$. Every system eventually approaches the loss-cone with a replenishment rate given by the diffusion rate of the cluster, $\mu / \rm {Gyr}^{-1} \lesssim 1$. This small rate reduces the total rate of the inspiral for individual MW mass galaxies with an estimate Robs ≲ 10−6−10−5 yr−1. A large collection of galaxies (Ngal &gt; 104 MW) may lead to an observable GW signal in the LISA band.
Survey2Survey: a deep learning generative model approach for cross-survey image mapping
Authors: Buncher Brandon , Sharma Awshesh Nath , Carrasco Kind Matias 
Published: February 2021

ABSTRACT
During the last decade, there has been an explosive growth in survey data and deep learning techniques, both of which have enabled great advances for astronomy. The amount of data from various surveys from multiple epochs with a wide range of wavelengths, albeit with varying brightness and quality, is overwhelming, and leveraging information from overlapping observations from different surveys has limitless potential in understanding galaxy formation and evolution. Synthetic galaxy image generation using physical models has been an important tool for survey data analysis, while deep learning generative models show great promise. In this paper, we present a novel approach for robustly expanding and improving survey data through cross survey feature translation. We trained two types of neural networks to map images from the Sloan Digital Sky Survey (SDSS) to corresponding images from the Dark Energy Survey (DES). This map was used to generate false DES representations of SDSS images, increasing the brightness and S/N while retaining important morphological information. We substantiate the robustness of our method by generating DES representations of SDSS images from outside the overlapping region, showing that the brightness and quality are improved even when the source images are of lower quality than the training images. Finally, we highlight images in which the reconstruction process appears to have removed large artefacts from SDSS images. While only an initial application, our method shows promise as a method for robustly expanding and improving the quality of optical survey data and provides a potential avenue for cross-band reconstruction.
Exploring the hydrostatic mass bias in MUSIC clusters: application to the NIKA2 mock sample
Authors: Gianfagna Giulia , De Petris Marco , Yepes Gustavo , De Luca Federico , Sembolini Federico , Cui Weiguang , Biffi Veronica , Kéruzoré Florian , Macías-Pérez Juan , Mayet Frédéric , Perotto Laurence , Rasia Elena , Ruppin Florian 
Published: February 2021

ABSTRACT
Clusters of galaxies are useful tools to constrain cosmological parameters, only if their masses can be correctly inferred from observations. In particular, X-ray and Sunyaev–Zeldovich (SZ) effect observations can be used to derive masses within the framework of the hydrostatic equilibrium. Therefore, it is crucial to have a good control of the possible mass biases that can be introduced when this hypothesis is not valid. In this work, we analysed a set of 260 synthetic clusters from the MUSIC simulation project at redshifts 0 ≤ z ≤ 0.82. We estimate the hydrostatic mass of the MUSIC clusters from X-ray only (temperature and density) and from X-ray and SZ (density and pressure). Then, we compare them with the true 3D dynamical mass. The biases are of the order of 20 per cent. We find that using the temperature instead of the pressure leads to a smaller bias, although the two values are compatible within 1σ. Non-thermal contributions to the total pressure support, arising from bulk motion and turbulence of the gas, are also computed and show that they are sufficient to account for this bias. We also present a study of the correlation between the mass bias and the dynamical state of the clusters. A clear correlation is shown between the relaxation state of the clusters and the bias factor. We applied the same analysis on a subsample of 32 objects, already selected for supporting the NIKA2 SZ Large Program.
Exploring the epoch of hydrogen reionization using FRBs
Authors: Beniamini Paz , Kumar Pawan , Ma Xiangcheng , Quataert Eliot 
Published: February 2021

ABSTRACT
We describe three different methods for exploring the hydrogen reionization epoch using fast radio bursts (FRBs) and provide arguments for the existence of FRBs at high redshift (z). The simplest way, observationally, is to determine the maximum dispersion measure (DMmax) of FRBs for an ensemble that includes bursts during the reionization. The DMmax provides information regarding reionization much like the optical depth of the cosmic microwave background to Thomson scattering does, and it has the potential to be more accurate than constraints from Planck, if DMmax can be measured to a precision better than 500 pccm−3. Another method is to measure redshifts of about 40 FRBs between z of 6 and 10 with ${\sim}10{{\ \rm per\ cent}}$ accuracy to obtain the average electron density in four different z-bins with ${\sim}4{{\ \rm per\ cent}}$ accuracy. These two methods do not require knowledge of the FRB luminosity function and its possible redshift evolution. Finally, we show that the reionization history is reflected in the number of FRBs per unit DM, given a fluence limited survey of FRBs that includes bursts during the reionization epoch; we show using FIRE simulations that the contribution to DM from the FRB host galaxy and circumgalactic medium during the reionization era is a small fraction of the observed DM. This third method requires no redshift information but does require knowledge of the FRB luminosity function.