bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ethics and Practice in the Excavation, Examination, Analysis, and Preservation of Historical Mummified Human Remains
Authors: Mytum Harold 
Published: March 2021

AbstractEuropean perspectives on the study of human remains, particularly mummified individuals with associated material culture, highlight the multidisciplinary research potential of these rare discoveries. The diverse evidence associated with mummified remains offers unique potential to consider how the deceased was experienced over time. Scientific analyses reveal the complex taphonomic processes leading to the selective survival of tissue and cultural items. Medical approaches to mummies have been long established, but historical examples can combine cultural and historical sources with the palaeopathological to develop more nuanced understandings of disease and lifestyle, identifying both individual biographies and wider cultural trends in mortuary practice. Study of mummies raises ethical considerations similar to those for skeletonized remains, but given the greater recognition of their humanity, further social and religious considerations are relevant. Investigation needs to be set against the local legislation and the feelings of the mummies’ gatekeepers and, in some cases, their descendant communities.
Gratitude and that which we cannot return: Critical reflections on gratitude
Authors: van Hulzen Mees 
Published: March 2021

AbstractGratitude is often perceived from the perspective of economic reciprocity, i.e., from the simple logic of quid pro quo. It is for this reason that Marcel Mauss ignores the topic of gratitude in his famous work on gift-giving, and that Seneca believes that gratitude is something which is given in return: ‘for the benefit that is accomplished by an act has been repaid by our gratitude if we give it friendly welcome’. In this paper I will demonstrate that gratitude is not something that is given in return or a cancelation of debt. Instead, I will argue for the claim that gratitude is the recognition of that which cannot be returned, which leads, in ideal cases, to a sense of responsibility for the other.
Mathematical study on two-fluid model for flow of K–L fluid in a stenosed artery with porous wall
Authors: Ponalagusamy R. , Manchi Ramakrishna 
Published: March 2021

AbstractThe present communication presents a theoretical study of blood flow through a stenotic artery with a porous wall comprising Brinkman and Darcy layers. The governing equations describing the flow subjected to the boundary conditions have been solved analytically under the low Reynolds number and mild stenosis assumptions. Some special cases of the problem are also presented mathematically. The significant effects of the rheology of blood and porous wall of the artery on physiological flow quantities have been investigated. The results reveal that the wall shear stress at the stenotic throat increases dramatically for the thinner porous wall (i.e. smaller values of the Brinkman and Darcy regions) and the rate of increase is found to be 18.46% while it decreases for the thicker porous wall (i.e. higher values of the Brinkman and Darcy regions) and the rate of decrease is found to be 10.21%. Further, the streamline pattern in the stenotic region has been plotted and discussed.
One step sonochemical synthesis of single phase Sr-doped ZnO2 nanorods
Authors: Bhardwaj Deepesh , Prasher Dixit , Dubey Anuj , Dhiman Vishal , Tomar Radha 
Published: March 2021

Abstract
Single phase SrZnO2 nanorods with average size of around 100 nm are synthesized by probe sonicator using ultrasonic waves at 60 W, 6 kHz for 3 h to observe the changes in optoelectronic properties of ZnO. The as grown SrZnO2 has a single phase rod shaped structure. These nanorods were broadly characterized by different instrumental techniques like TEM, FESEM, EDAX, XRD, UV–Visible and FTIR for analysis of size, crystal structure, morphology and composition which acknowledge the formation of single phase crystalline ZnO and slightly amorphous SrZnO2 nanorods. All these results suggest that single phase SrZnO2 nano-composites can easily be synthesized by one step sono-chemical method.

Graphic abstract
The projected impacts of smart decline on urban runoff contamination levels
Authors: Zhu Rui , Newman Galen 
Published: March 2021

AbstractThere has been mounting interest about how the repurposing of vacant land (VL) through green infrastructure (the most common smart decline strategy) can reduce stormwater runoff and improve runoff quality, especially in legacy cities characterized by excessive industrial land uses and VL amounts. This research examines the long-term impacts of smart decline on both stormwater amounts and pollutants loads through integrating land use prediction models with green infrastructure performance models. Using the City of St. Louis, Missouri, USA as the study area, we simulate 2025 land use change using the Conversion of Land Use and its Effects (CLUE-S) and Markov Chain urban land use prediction models and assess these change’s probable impacts on urban contamination levels under different smart decline scenarios using the Long-Term Hydrologic Impact Assessment (L-THIA) performance model. The four different scenarios are: (1) a baseline scenario, (2) a 10% vacant land re-greening (VLRG) scenario, (3) a 20% VLRG scenario, and (4) a 30% VLRG scenario. The results of this study illustrate that smart decline VLRG strategies can have both direct and indirect impacts on urban stormwater runoff and their inherent contamination levels. Direct impacts on urban contamination include the reduction of stormwater runoff and non-point source (NPS) pollutants. In the 30% VLRG scenario, the annual runoff volume decreases by 11%, both physical, chemical, and bacterial pollutants are reduced by an average of 19%, compared to the baseline scenario. Indirect impacts include reduction of the possibility of illegal dumping on VL through mitigation and prevention of future vacancies.
Simulating the effects of redesigned street-scale built environments on access/egress pedestrian flows to metro stations
Authors: Liu Yanan , Yang Dujuan , Timmermans Harry J. P. , de Vries Bauke 
Published: March 2021

AbstractIn urban renewal processes, metro line systems are widely used to accommodate the massive traffic needs and stimulate the redevelopment of the local area. The route choice of pedestrians, emanating from or going to the metro stations, is influenced by the street-scale built environment. Many renewal processes involve the improvement of the street-level built environment and thus influence pedestrian flows. To assess the effects of urban design on pedestrian flows, this article presents the results of a simulation model of pedestrian route choice behavior around Yingkoudao metro station in the city center of Tianjin, China. Simulated pedestrian flows based on 4 scenarios of changes in street-scale built environment characteristics are compared. Results indicate that the main streets are disproportionally more affected than smaller streets. The promotion of an intensified land use mix does not lead to a high increase in the number of pedestrians who choose the involved route when traveling from/to the metro station, assuming fixed destination choice.
DYNAMIC ASSET ALLOCATION FOR TARGET DATE FUNDS UNDER THE BENCHMARK APPROACH
Authors: Sun Jin , Zhu Dan , Platen Eckhard 
Published: March 2021

ABSTRACTTarget date funds (TDFs) are becoming increasingly popular investment choices among investors with long-term prospects. Examples include members of superannuation funds seeking to save for retirement at a given age. TDFs provide efficient risk exposures to a diversified range of asset classes that dynamically match the risk profile of the investment payoff as the investors age. This is often achieved by making increasingly conservative asset allocations over time as the retirement date approaches. Such dynamically evolving allocation strategies for TDFs are often referred to as glide paths. We propose a systematic approach to the design of optimal TDF glide paths implied by retirement dates and risk preferences and construct the corresponding dynamic asset allocation strategy that delivers the optimal payoffs at minimal costs. The TDF strategies we propose are dynamic portfolios consisting of units of the growth-optimal portfolio (GP) and the risk-free asset. Here, the GP is often approximated by a well-diversified index of multiple risky assets. We backtest the TDF strategies with the historical returns of the S&P500 total return index serving as the GP approximation.
OPTIMAL REINSURANCE DESIGN WITH DISTORTION RISK MEASURES AND ASYMMETRIC INFORMATION
Authors: Boonen Tim J. , Zhang Yiying 
Published: March 2021

ABSTRACTThis paper studies a problem of optimal reinsurance design under asymmetric information. The insurer adopts distortion risk measures to quantify his/her risk position, and the reinsurer does not know the functional form of this distortion risk measure. The risk-neutral reinsurer maximizes his/her net profit subject to individual rationality and incentive compatibility constraints. The optimal reinsurance menu is succinctly derived under the assumption that one type of insurer has a larger willingness to pay than the other type of insurer for every risk. Some comparative analyses are given as illustrations when the insurer adopts the value at risk or the tail value at risk as preferences.
ON GRAEV’S THEOREM FOR FREE PRODUCTS OF HAUSDORFF TOPOLOGICAL GROUPS
Authors: SAMSONADZE GURAM , ZANGURASHVILI DALI 
Published: March 2021

AbstractThe paper gives a simple proof of Graev’s theorem (asserting that the free product of Hausdorff topological groups is Hausdorff) for a particular case which includes the countable case of

$k_\omega $
-groups and the countable case of Lindelöf P-groups. For this it is shown that in these particular cases the topology of the free product of Hausdorff topological groups coincides with the

$X_0$
-topology in the Mal’cev sense, where X is the disjoint union of the topological groups identifying their units.
On Care for Our Common Home: Ecological Materiality and Sovereignty over the Lempa Transboundary Watershed
Authors: Montoya Ainhoa 
Published: March 2021

AbstractFor over a decade, Salvadorean grassroots movements and non-governmental organisations (NGOs) pursued legal innovations with the aim of protecting their water sources from potentially polluting industrial activities such as mining. They initially drafted bans on mining that would preclude the extractive-based development path embraced by neighbouring countries. Eventually, they scaled up their approach and devised a draft proposal for a transboundary waters treaty that addressed the challenges that the ecological materiality of international watercourses poses to nationalde juresovereignty. In so doing, the transboundary watershed has become a useful heuristic, a spatial trope to which Salvadoreans have turned to substantiate their claims to sovereignty over the Lempa River waters that El Salvador shares with pro-mining Guatemala and Honduras – claims imbued with an ethics of care rooted in wartime politics and Catholic morality.
Framing, truth-telling, and the limits of local transitional justice
Authors: Kochanski Adam 
Published: March 2021

AbstractTransitional justice (TJ) is undergoing a legitimacy crisis. While recent critical TJ scholarship has touted the transformative potential of locally rooted mechanisms as a possible means to emancipate TJ, this burgeoning literature rests on shaky assumptions about the purported benefits of local TJ and provides inadequate attention to local-national power dynamics. By taking these factors into consideration, this article contends that local TJ efforts can be used to deflect justice in manners that paradoxically allow ruling parties to avoid human rights accountability and to conceal the truth about wartime violations. It further argues that the principal method by which justice is subverted is not through overt manipulation by abusive governments, but rather, through subtle and indirect ‘distortional framing’ practices, which ruling parties use to set discursive limits around discussions of conflict-related events and to obfuscate their own serious crimes. After developing this argument theoretically, the case study of Cambodia is considered in detail to reveal and to trace the processes by which distortional framing has been used as a technique to deflect justice.
Transcatheter stent implantation in a child with severe stenosis of the inferior caval vein secondary to injury
Authors: Neis Nathan , Vezmar Marko , Singewald Timothy , Rios Rodrigo 
Published: March 2021

AbstractStenosis of the Inferior Caval Vein is rarely encountered in the paediatric setting. A 5-year-old male sustained severe injuries secondary to a fall from a three story balcony and was subsequently found to have severe stenosis of the inferior caval vein resulting in extensive lymphatic drainage with chylothorax, chyloperitoneum, and severe abdominal ascites. This was successfully treated with transcatheter stent placement resulting in complete resolution of the stenosis and significant clinical improvement allowing for transfer to a rehabilitation centre and eventual discharge home.
Feeding and feedback in the nucleus of NGC 613
Authors: da Silva Patrícia , Steiner J. E. , Menezes R. B. 
Published: March 2021

AbstractActive Galactic Nuclei (AGN) are objects in which a supermassive black hole is fed by gas and, as this generates energy, can ionise the environment and interact with it by jets and winds. This work is focused on the processes of feeding and feedback in the nucleus of NGC 613. This object is a case in which both phenomena can be studied in some detail. The kinematics and morphology of the molecular gas trace the feeding process while the ionization cone, seen in [O iii]λ5007 and soft X-rays, as well as the radio jet and wind/outflows are associated with feedback processes. In addition, we see 10 HII regions, associated with nuclear and circumnuclear young stellar populations, dominant in the optical, that makes the analysis complicated, though more interesting. For all these phenomena, NGC 613 nucleus is a vibrant example of the interplay between the AGN and the host galaxy.
Properties of AGN in NIR within the context of the Eigenvector 1
Authors: dos Santos D. Dias , Rodríguez-Ardila A. , Marinello M. 
Published: March 2021

AbstractWe present a spectral atlas of 70 type-I AGN with the wavelength ranging 0.4–2.5 μm. For 37 sources, this is the first report of NIR spectroscopy in literature. The sample was constructed to study narrow line Seyfert 1 and quasars, with a large range of line widths (800 km s−1 < FWHM < 4000 km s−1) and Fe II intensities (0.2 < R4570 < 2.8). This work presents partial results of an ongoing project that has the objective of modeling the continuum emission and emission lines in order to derive the physics driven the Eigenvector 1 through a panchromatic spectral analysis, with emphasis on strong to super-strong Fe ii emitters. Our results show that hot dust near the sublimation temperature is necessary to explain the 1μm break of the power law component of the continuum. We estimated the hot dust mass and found a weak or absent correlation with the Fe II intensity. Moreover, we found that low ionisation ions are formed in an outer region of the BLR.
Observations of AGN feeding and feedback on Nuclear, Galactic, and Extragalactic Scales
Authors: Crenshaw D. Michael , Gnilka C. L. , Fischer T. C. , Revalski M. , Meena B. , Martinez F. , Polack G E. , Machuca C. , Dashtamirova D. , Kraemer S. B. , Schmitt H. R. , Riffel R. A. , Storchi-Bergmann T. 
Published: March 2021

AbstractWe investigate the processes of active galactic nuclei (AGN) feeding and feedback in the narrow line regions (NLRs) and host galaxies of nearby AGN through spatially resolved spectroscopy with the Gemini Near-Infrared Integral Field Spectrograph (NIFS) and the Hubble Space Telescope’s Space Telescope Imaging Spectrograph (STIS). We examine the connection between nuclear and galactic inflows and outflows by adding long-slit spectra of the host galaxies from Apache Point Observatory. We demonstrate that nearby AGN can be fueled by a variety of mechanisms. We find that the NLR kinematics can often be explained by in situ ionization and radiative acceleration of ambient gas, often in the form of dusty molecular spirals that may be the fueling flow to the AGN.
Recovering the star formation history of galaxies through spectral fitting: Current challenges
Authors: Martins Lucimara P. 
Published: March 2021

AbstractWith the exception of some nearby galaxies, we cannot resolve stars individually. To recover the galaxies star formation history (SFH), the challenge is to extract information from their integrated spectrum. A widely used tool is the full spectral fitting technique. This consists of combining simple stellar populations (SSPs) of different ages and metallicities to match the integrated spectrum. This technique works well for optical spectra, for metallicities near solar and chemical histories not much different from our Galaxy. For everything else there is room for improvement. With telescopes being able to explore further and further away, and beyond the optical, the improvement of this type of tool is crucial. SSPs use as ingredients isochrones, an initial mass function, and a library of stellar spectra. My focus are the stellar libraries, key ingredient for SSPs. Here I talk about the latest developments of stellar libraries, how they influence the SSPs and how to improve them.
Models for galaxy and massive black hole formation and early evolution
Authors: Weinberger Rainer 
Published: March 2021

AbstractModels for massive black holes are a key ingredient for modern cosmological simulations of galaxy formation. The necessity of efficient AGN feedback in these simulations makes it essential to model the formation, growth and evolution of massive black holes, and parameterize these complex processes in a simplified fashion. While the exact formation mechanism is secondary for most galaxy formation purposes, accretion modeling turns out to be crucial. It can be informed by the properties of the high redshift quasars, accreting close to their Eddington limit, by the quasar luminosity function at peak activity and by low-redshift scaling relations. The need for halo-wide feedback implies a feedback-induced reduction of the accretion rate towards low redshift, amplifying the cosmological trend towards lower accretion rates at low redshift.
Taking snapshots of the jet-ISM interplay with ALMA
Authors: Morganti Raffaella , Oosterloo Tom , Tadhunter Clive N. 
Published: March 2021

AbstractWe present an update of our ongoing project to characterise the impact of radio jets on the interstellar medium (ISM). This is done by tracing the distribution, kinematics and excitation of the molecular gas at high spatial resolution using ALMA. The radio active galactic nuclei (AGN) studied are in the interesting phase of having a recently born radio jet. In this stage, the plasma jets can have the largest impact on the ISM, as also predicted by state-of-the-art simulations. The two targets we present have quite different ages, allowing us to get snapshots of the effects of radio jets as they grow and evolve. Interestingly, both also host powerful quasar emission, making them ideal for studying the full impact of AGN. The largest mass outflow rate of molecular gas is found in a radio galaxy () hosting a newly born radio jet still in the early phase of emerging from an obscuring cocoon of gas and dust. Although the molecular mass outflow rate is high (few hundred), the outflow is limited to the inner few hundred pc region. In a second object (), the jet is larger (a few kpc) and is in a more advanced evolutionary phase. In this object, the distribution of the molecular gas is reminiscent of what is seen, on larger scales, in cool-core clusters hosting radio galaxies. Interestingly, gas deviating from quiescent kinematics (possibly indicating an outflow) is not very prominent, limited only to the very inner region, and has a low mass outflow rate. Instead, on kpc scales, the radio lobes appear associated with depressions in the distribution of the molecular gas. This suggests that the lobes have broken out from the dense nuclear region. However, the AGN does not appear to be able, at present, to stop the star formation observed in this galaxy. These results support the idea that the effects of the radio source start in the very first phases by producing outflows which, however, tend to be limited to the kpc region. After that, the effects turn into producing large-scale bubbles which could, in the long term, prevent the surrounding gas from cooling. Thus, our results provide a way to characterise the effect of radio jets in different phases of their evolution and in different environments, bridging the studies done for radio galaxies in clusters.
The co-responsibility of mass and environment in the formation of lenticular galaxies
Authors: Cortesi A. , Coccato L. , Buzzo M. L. , Menéndez-Delmestre K. , Goncalves T. , Mendes de Oliveira C. , Merrifield M. , Arnaboldi M. 
Published: March 2021

AbstractWe present the latest data release of the Planetary Nebulae Spectrograph Survey (PNS) of ten lenticular galaxies and two spiral galaxies. With this data set we are able to recover the galaxies’ kinematics out to several effective radii. We use a maximum likelihood method to decompose the disk and spheroid kinematics and we compare it with the kinematics of spiral and elliptical galaxies. We build the Tully- Fisher (TF) relation for these galaxies and we compare with data from the literature and simulations. We find that the disks of lenticular galaxies are hotter than the disks of spiral galaxies at low redshifts, but still dominated by rotation velocity. The mechanism responsible for the formation of these lenticular galaxies is neither major mergers, nor a gentle quenching driven by stripping or Active Galactic Nuclei (AGN) feedback.
Constraining general relativity at z ∼ 0.299 MUSE Kinematics of SDP.81
Authors: Carneiro Carlos R. M. , Furlanetto Cristina , Chies-Santos Ana L. 
Published: March 2021

AbstractGeneral Relativity has been successfully tested on small scales. However, precise tests on galactic and larger scales have only recently begun. Moreover, the majority of these tests on large scales are based on the measurements of Hubble constant (H0), which is currently under discussion. Collett et al. (2018) implemented a novel test combining lensing and dynamical mass measurements of a galaxy, which are connected by a γ parameter, and found γ=0.97±0.09, which is consistent with unity, as predicted by GR. We are carrying out this same technique with a second galaxy, SDP.81 at z=0.299, and present here our preliminary results.
Variable radio AGN at high redshift identified in the VLA Sky Survey
Authors: Nyland Kristina , Dong Dillon , Patil Pallavi , Lacy Mark , Kimball Amy , Hallinan Gregg , Sarbadhicary Sumit , Polisensky Emil , Kassim Namir , Peters Wendy , Clarke Tracy , Mukherjee Dipanjan , van Velzen Sjoert , Baldassare Vivienne 
Published: March 2021

AbstractAs part of an on-going study of radio transients in Epoch 1 (2017–2019) of the Very Large Array Sky Survey (VLASS), we have discovered a sample of 0.2 < z < 3.2 active galactic nuclei (AGN) selected in the optical/infrared that have recently brightened dramatically in the radio. These sources would have previously been classified as radio-quiet based on upper limits from the Faint Images of the Radio Sky at Twenty-centimeters (FIRST; 1993-2011) survey; however, they are now consistent with radio-loud quasars. We present a quasi-simultaneous, multi-band (1–18 GHz) VLA follow-up campaign of our sample of AGN with extreme radio variability. We conclude that the radio properties are most consistent with AGN that have recently launched jets within the past few decades, potentially making them among the youngest radio AGN known.