bluuebunny/crossref_metadata_2025_split huggingface dataset:
Unusual Reactivity of Silicon Grease Towards Metal Alkoxides: Serendipity for Structural Chemistry
Authors: Nahrstedt Vanessa , Raauf Aida , Hegemann Corinna , Brune Veronika , Schläfer Johannes , Mathur Sanjay 
Published: March 2021

AbstractControlled synthesis of moisture sensitive metal alkoxides demands the use of silicon grease for the inert synthetic manipulation of starting materials using glass apparatus to avoid adventitious hydrolysis. Spontaneous reaction of the siloxane units (−OSi(Me3)2)n) with the synthesized alkoxides often leads to molecular metal alkoxides based siloxane frameworks. These spontaneous incorporation of siloxane units into homo‐ and heterometallic alkoxide building blocks lead to the new multinuclear homo‐ and heterometallic alkoxide‐siloxide compounds [Ce2(OtBu)4{Me2Si(OtBu)O}2(NO3)2] (1), [Zr{(OiPr)2{Me2SiO2}Sr{Zr2(OiPr)8}}2] (2) and [Sn2In2O2{Me2Si(OiPr)O}(OiPr)5]2 (3). Multifunctional coordination properties of these siloxane units enable the molecular approach to synthetically demanding polymetallic complexes for potential MOx‐SiOx nanocomposites fabrication.
Let’s (not) Go Outside: Grindr, Hybrid Space, and Digital Queer Neighborhoods
Authors: Miles Sam 
Published: March 2021

AbstractDevelopments in mobile digital technologies are disrupting conventional understandings of space and place for smartphone users. One way in which location-based media are refiguring previously taken-for-granted spatial traditions is via GPS-enabled online dating and hook-up apps. For sexual minorities, these apps can reconfigure any street, park, bar, or home into a queer space through a potential meeting between mutually attracted individuals, but what does this signify for already-existing queer spaces? This chapter examines how smartphone apps including Grindr, Tinder, and Blued synthesize online queer encounter with offline physical space to create a new hybrid terrain predicated on availability, connection, and encounter. It is also a terrain that can sidestep established gay neighborhoods entirely. I explore how this hybridization impacts on older, physically rooted gay neighborhoods and the role that these neighborhoods have traditionally played in brokering social and sexual connection for sexual minorities. Few would deny that location-based apps have come to play a valuable role in multiplying opportunities for sexual minorities. However, the stratospheric rise of these technologies also provokes questions about their impact on embodied encounter, queer community, and a sense of place. A decade on from Grindr’s release, this chapter evaluates the impact of location-based media on gay spaces and reflects on what the increasing hybridization of online and offline spaces for same-sex encounter might mean for queer lives of the future.
Collective Trauma, Collective Healing
Authors: Theisen-Womersley Gail 
Published: March 2021

AbstractTrauma associated with forced displacement has a psychosocial impact not only on the individual, but also families, communities and larger society. At the family level, this includes the dynamics of single parent families, lack of trust among members, and changes in significant relationships and child-rearing practice. Communities tend to be more dependent, passive, silent, without leadership, mistrustful and suspicious.
Collective Aspirations
Authors: Theisen-Womersley Gail 
Published: March 2021

AbstractEurope has faced an unprecedented influx of asylum seekers– with over one and a half million sea arrivals reported since 2015 by the United Nations High Commissioner for Refugees (UNHCR). As the “reception crisis” continues unabated, Greece remains one of the first ports of sanctuary. According to recent statistics provided for March 2018 by the UNHCR, over 50,000 asylum seekers and refugees currently remain in Greece following this mass flow.
Symbiotic 8: Parallel and Targeted Test Generation
Authors: Chalupa Marek , Novák Jakub , Strejček Jan 
Published: March 2021

AbstractThe setup of Symbiotic 8 for Test-Comp 2021 brings radical changes in the test generation for property. Similarly as in Symbiotic 7, we generate tests by running our fork of symbolic executor Klee on the analyzed program. Symbiotic 8, however, runs several instances of Klee in parallel. We run one instance of Klee on the original program and, simultaneously, we create one (intentionally unsound) program slice for every program-terminating instruction in the program and run Klee on these slices. Apart from this principal change, we also improved other components of the tool, mainly the program slicer. Further, our fork of Klee now supports symbolic pointer arithmetics and comparison of symbolic addresses.
Mit der Stadtgesellschaft ins Spiel kommen – Der Fonds „Heimspiel“ der Kulturstiftung des Bundes
Authors: Stempel Lukas 
Published: March 2021

ZusammenfassungDer Beitrag analysiert das von 2005–2013 von der Kulturstiftung des Bundes realisierte Förderprogramm „Heimspiel“. Zwei Forschungsfragen stehen im Fokus: Welche Häuser und welche Projekte wurden im Rahmen des Fonds „Heimspiel“ gefördert? Und: Wie beschäftigen sich diese mit der Stadt und Stadtgesellschaft? Im Rahmen einer deskriptiv angelegten qualitativen Dokumentenanalyse werden unter anderem Zahlen aus der Deutschen Theaterstatistik und die Kurzbeschreibungen der jeweiligen Stadtprojekte zur Auswertung herangezogen und diskutiert.
Unified framework for B-anomalies, muon g − 2 and neutrino masses
Authors: Babu K. S. , Dev P. S. Bhupal , Jana Sudip , Thapa Anil 
Published: March 2021

Abstract
We present a model of radiative neutrino masses which also resolves anomalies reported in B-meson decays, $$ {R}_{D^{\left(\ast \right)}} $$

R

D

∗

and $$ {R}_{K^{\left(\ast \right)}} $$

R

K

∗

, as well as in muon g − 2 measurement, ∆aμ. Neutrino masses arise in the model through loop diagrams involving TeV-scale leptoquark (LQ) scalars R2 and S3. Fits to neutrino oscillation parameters are obtained satisfying all flavor constraints which also explain the anomalies in $$ {R}_{D^{\left(\ast \right)}} $$

R

D

∗

, $$ {R}_{K^{\left(\ast \right)}} $$

R

K

∗

and ∆aμ within 1 σ. An isospin-3/2 Higgs quadruplet plays a crucial role in generating neutrino masses; we point out that the doubly-charged scalar contained therein can be produced in the decays of the S3 LQ, which enhances its reach to 1.1 (6.2) TeV at $$ \sqrt{s} $$

s

= 14 TeV high-luminosity LHC ($$ \sqrt{s} $$

s

= 100 TeV FCC-hh). We also present flavor-dependent upper limits on the Yukawa couplings of the LQs to the first two family fermions, arising from non-resonant dilepton (pp → ℓ+ℓ−) processes mediated by t-channel LQ exchange, which for 1 TeV LQ mass, are found to be in the range (0.15 − 0.36). These limits preclude any explanation of $$ {R}_{D^{\left(\ast \right)}} $$

R

D

∗

through LQ-mediated B-meson decays involving νe or νμ in the final state. We also find that the same Yukawa couplings responsible for the chirally-enhanced contribution to ∆aμ give rise to new contributions to the SM Higgs decays to muon and tau pairs, with the modifications to the corresponding branching ratios being at (2–6)% level, which could be tested at future hadron colliders, such as HL-LHC and FCC-hh.
Electric dipole moments, new forces and dark matter
Authors: Pérez Pavel Fileviez , Plascencia Alexis D. 
Published: March 2021

Abstract
New sources of CP violation beyond the Standard Model are crucial to explain the baryon asymmetry in the Universe. We discuss the impact of new CP violating interactions in theories where a dark matter candidate is predicted by the cancellation of gauge anomalies. In these theories, the constraint on the dark matter relic density implies an upper bound on the new symmetry breaking scale from which all new states acquire their masses. We investigate in detail the predictions for electric dipole moments and show that if the relevant CP-violating phase is large, experiments such as the ACME collaboration will be able to fully probe the theory.
The median rule in judgement aggregation
Authors: Nehring Klaus , Pivato Marcus 
Published: March 2021

AbstractAjudgement aggregation ruletakes the views of a collection of voters over a set of interconnected issues and yields a logically consistent collective view. Themedian ruleis a judgement aggregation rule that selects the logically consistent view which minimizes theaverage distanceto the views of the voters (where the “distance” between two views is the number of issues on which they disagree). In the special case of preference aggregation, this is called theKemeny rule. We show that, under appropriate regularity conditions, the median rule is the unique judgement aggregation rule which satisfies three axioms:Ensemble Supermajority Efficiency,Reinforcement, andContinuity. Our analysis covers aggregation problems in which the consistency restrictions on input and output judgements may differ. We also allow for issues to be weighted, and provide numerous examples in which issue weights arise naturally.
Patient Acceptance of Routine Serial Postoperative Endoscopy Following Low Anterior Resection (LAR) and Its Ability to Detect Biomarkers in Anastomotic Lavage Fluid
Authors: Guyton Kristina , Belogortseva Natalia , Levine Zoe , Kaiser Brooke Deatherage , Sangwan Naseer , Hyman Neil , Shogan Benjamin D. , Zaborina Olga , Alverdy John C. 
Published: March 2021

AbstractBackgroundVarious reports have now established that postoperative endoscopy to examine and intervene in the process of anastomotic healing is both feasible and safe. Here we present our preliminary experience with serial postoperative endoscopy to determine its feasibility, patient acceptance and the ability to obtain and the utility of perianastomotic material for molecular analysis.
MethodsPatients undergoing LAR with ileostomy for rectal cancer were recruited for study to undergo routine serial endoscopic surveillance (SES) at three time points during the course of LAR: intraoperatively, before discharge (postoperative day 3–7) and at follow‐up (postoperative day 10–28). At each endoscopy, images were captured, anastomotic tissues were lavaged and lavage fluid was retrieved. Fluid samples were analyzed using proteomics, zymography, ELISA and bacteria via 16S rRNA gene amplicon sequencing and culture of collagenolytic strains.
ResultsSES is feasible and acceptable to this limited set of patients following LAR. Biologic analysis of perianastomotic fluids was able to detect the presence of proteins, microbiota and inflammatory mediators previously identified at anastomotic sites in animals with pathologic healing.ConclusionSES can be implemented in patients undergoing LAR with a high degree of patient compliance and capture of biologic information and imaging. Application of this approach has the potential to uncover, for the first time, the natural history of normal versus pathologic anastomotic healing in patients undergoing anastomotic surgery.
Population genomic structure of the black coral Antipathella subpinnata in Mediterranean Vulnerable Marine Ecosystems
Authors: Terzin Marko , Paletta Maria Grazia , Matterson Kenan , Coppari Martina , Bavestrello Giorgio , Abbiati Marco , Bo Marzia , Costantini Federica 
Published: March 2021

AbstractAntipathella subpinnata (Ellis and Solander 1786) is one of the most frequently observed black corals at mesophotic depths (60–200 m) of the Mediterranean Sea, particularly in the northwestern part of the basin, where its populations can reach high densities and create forest-like aggregations, both along the coast and in offshore locations such as seamounts. Similar to other marine underwater forests, black coral gardens host a rich associated fauna and attract numerous species of commercial interest. As such, these corals are targeted by recreational and artisanal fisheries and are vulnerable to human impact due to their arborescent morphology and low growth rates. Genetic connectivity can provide valuable insight into the processes of population maintenance and replenishment following environmental disturbance and is often used as a proxy for population resilience. In our study, a restriction-site associated DNA analysis (2bRAD) was used to evaluate fine-scale population structure of the Mediterranean black coral A. subpinnata, and to understand which populations could serve as a potential source of genetic diversity for adjacent populations. Colonies from two offshore localities (a Ligurian seamount and a Tyrrhenian canyon) and four coastal populations from Liguria and Sicily were sampled and genotyped. Significant genetic differentiation was recorded between coastal and offshore localities. Moreover, offshore localities were genetically distinct from one another, while all coastal populations were characterized by panmixia. This indicates that offshore A. subpinnata gardens are potentially less resilient to human impact (i.e., demersal fishing activities) due to a limited influx of larvae from adjacent habitats. In addition, they are unlikely to supply coral propagules to coastal populations. Overall, this study highlights the vulnerability of Mediterranean A. subpinnata forests, and the importance of enforcing conservation and management measures to achieve Good Environmental Status (GES, EU Marine Strategy Framework Directive) of these valuable marine ecosystems.
Quadriceps and hamstring tendon autografts in ACL reconstruction yield comparably good results in a prospective, randomized controlled trial
Authors: Horstmann Hauke , Petri Maximilian , Tegtbur Uwe , Felmet Gernot , Krettek Christian , Jagodzinski Michael 
Published: March 2021

Abstract
Introduction
Comparable data of functional outcomes of anterior cruciate ligament reconstruction using either hamstring- or quadriceps tendon grafts is controversial. This prospective, randomized controlled trial aims to provide data comparing both grafts regarding the functional outcome.

Materials and methods
A two centre trial involving symptomatic patients 18 years of age or older with an anterior cruciate ligament tear was conducted. We randomly assigned 27 patients to quadruple hamstring tendon reconstruction and 24 to quadriceps tendon reconstruction. The patients were evaluated preoperatively, at 3, 6, 12 and 24 months post-surgery. The primary outcome parameter was the side-to-side knee laxity measured with an arthrometer. Secondary outcomes included results in the International Knee Documentation Committee (IKDC) and Lysholm Scores and isokinetic testing of strength in knee extension and flexion.

Results
Forty-four patients (86%) completed the 2-year follow-up. There was significantly improved knee stability at all time intervals with no difference between the two study groups. The manual side-to-side displacement improved by 4.7 ± 3.0 mm in patients with hamstring tendon reconstruction and 5.5 ± 2.9 mm in patients with quadriceps tendon reconstruction. In addition, muscle strength and outcome scores (IKDC and Lysholm Score) did not show any differences between the hamstring tendon group and the quadriceps tendon group. Patients in the hamstring tendon group returned to their pre-injury activity level after 95.2 ± 45.5 days while patients in the quadriceps tendon group needed 82.1 ± 45.6 days.

Conclusion
Quadriceps and hamstring tendon autografts yield comparably good results in primary anterior cruciate ligament reconstruction.
Efficiency of bioaerosol samplers: a comparison study
Authors: Mescioglu Esra , Paytan Adina , Mitchell Bailey W. , Griffin Dale W. 
Published: March 2021

AbstractBioaerosols, including bacteria and fungi, are ubiquitous and have been shown to impact various organisms as well as biogeochemical cycles and human health. However, sample collection poses a challenge for aeromicrobiologists and can determine the success of a study. Establishing a standard collection procedure for bioaerosol sampling could help advance the field. We tested the efficiency (number of organisms collected and DNA yield per unit time) of three sampling devices: a membrane filtration device, a liquid impinger, and a portable electrostatic precipitator bioaerosol collector. We compared the efficiency of these three devices for both culture-dependent studies, by enumerating colony forming units (CFUs), and culture-independent studies, by extracting and quantifying total DNA. Our results show that the electrostatic precipitator collected microorganisms significantly more efficiently than the membrane filtration and liquid impingement in both types of studies over the same time interval. This is due to the high flow rate of the device. This work is important and timely because aeromicrobiology is currently restricted by long sampling times and risk of evaporation, desiccation, or freezing during sample, which increases with sampling times. Fieldwork convenience and portability of instruments are an additional challenge for sampling. Using a sampler that can overcome these technical hurdles can accelerate the advancement of the field, and the use of a lightweight, battery-powered, inexpensive, and portable bioaerosol collection device could address these limitations.
Re-envisioning paradigms of education: towards awareness, alignment, and pluralism
Authors: Baker Lindsay R. , Phelan Shanon , Woods Nicole N. , Boyd Victoria A. , Rowland Paula , Ng Stella L. 
Published: March 2021

AbstractIn this article we introduce a synthesis of education “paradigms,” adapted from a multi-disciplinary body of literature and tailored to health professions education (HPE). Each paradigm involves a particular perspective on the purpose of education, the nature of knowledge, what knowledge is valued and included in the curriculum, what it means to learn and how learning is assessed, and the roles of teachers and learners in the learning process. We aim to foster awareness of how these different paradigms look in practice and to illustrate the importance of alignment between teaching, learning and assessment practices with paradigmatic values and assumptions. Finally, we advocate for a pluralistic approach that purposefully and meaningfully integrates paradigms of education, enhancing our ability to drive quality in HPE.
Multi-criteria optimization in regression
Authors: Tsionas Mike G. 
Published: March 2021

AbstractIn this paper, we consider standard as well as instrumental variables regression. Specification problems related to autocorrelation, heteroskedasticity, neglected non-linearity, unsatisfactory out-of-small performance and endogeneity can be addressed in the context of multi-criteria optimization. The new technique performs well, it minimizes all these problems simultaneously, and eliminates them for the most part. Markov Chain Monte Carlo techniques are used to perform the computations. An empirical application to NASDAQ returns is provided.
Dreissenids’ breaking loose: differential attachment as a possible driver of the dominance shift between two invasive mussel species
Authors: D’Hont Anouk , Gittenberger Adriaan , Hendriks A. Jan , Leuven Rob S. E. W. 
Published: March 2021

AbstractPonto-Caspian dreissenids are notorious freshwater invaders. Recently, widespread observations show a dominance shift from the early invader, Dreissena polymorpha, to its successor, Dreissena bugensis. These observations likely reflect congeneric species differences in physiological and behavioural traits. Here, we assessed the mussel attachment strength, attachment rate, and the mode of byssal failure as trait differences that could potentially contribute to dominance shifts. The attachment traits were measured in field and laboratory experiments. Fouling plates were deployed in the Rhine-Meuse river delta and dreissenids were collected and acclimatised in 60 L non-aerated freshwater tanks. Attachment strength was positively correlated with shell size. The attachment strength of D. bugensis was significantly greater compared to slower growing D. polymorpha individuals of a dreissenid field assemblage. This corresponded to the superior byssal thread morphology of D. bugensis (i.e. higher number and two times wider byssal threads). Moreover, our results indicated that byssal threads of D. bugensis are stronger than those of D. polymorpha, as the latter ruptured more often. Additionally, D. bugensis had a significantly lower attachment rate than D. polymorpha. Having a greater attachment strength gives D. bugensis an advantage when it comes to withstanding currents and predators. On the other hand, not being attached allows an individual to actively move around. This would allow them to move away from fast changing unfavourable environmental conditions. These attachment traits indicate competitive benefits for D. bugensis over D. polymorpha, therefore possibly contributing to the dominance shifts.
Power Imbalance and the Dark Side of the Captive Agri-food Supplier–Buyer Relationship
Authors: Glavee-Geo Richard , Engelseth Per , Buvik Arnt 
Published: March 2021

AbstractThis paper highlights the dark side of power imbalance regarding its consequences in agri-food supplier–buyer relationships. We report on findings from two studies. The first study is based on a sample of 105 key informants, while study 2 is based on a sample of 444 key informants, all from the cocoa agri-food supply market of Ghana. While the first study focuses on the antecedents of power imbalance and its consequences, the second study explores the role of cooperatives/collective action in minimizing supplier exploitation. Data from these studies were analysed using the partial least squares technique (SmartPLS). Analysis of these findings shows switching costs’ impact on power imbalance to be curvilinear, while power imbalance has a curvilinear relationship with opportunism. The negative consequences of power imbalance are further exacerbated by dependency and the lack of joint action. Furthermore, we found the negative impact of power imbalance on financial performance to be stronger for non-cooperative members than for cooperative members, while, counterintuitively, we found the positive impact of economic satisfaction on financial performance to be stronger for non-cooperative members than for cooperative members.