bluuebunny/crossref_metadata_2025 huggingface dataset:
A Fast Transform for Brain Connectivity Difference Evaluation
Authors: Zanin Massimiliano , Ivanoska Ilinka , Güntekin Bahar , Yener Görsev , Loncar-Turukalo Tatjana , Jakovljevic Niksa , Sveljo Olivera , Papo David
Published: April 2021

Anatomical and dynamical connectivity are essential to healthy brain function. However, quantifying variations in connectivity across conditions or between patient populations and appraising their functional significance are highly non-trivial tasks. Here we show that link ranking differences induce specific geometries in a convenient auxiliary space that are often easily recognisable at mere eye inspection. Link ranking can also provide fast and reliable criteria for network reconstruction parameters for which no theoretical guideline has been proposed.
Risking the social bond: motivations to defend or to repair when dealing with displeasing information
Authors: Løkkeberg Stine Torp , Gausel Nicolay , Giner-Sorolla Roger , Leach Colin Wayne
Published: April 2021

Our choice to withhold or disclose displeasing information to another can motivate concern about damage to our social bonds. In two experiments, using two different samples of university students in Norway, (N = 174 and N = 217), we found that withholding unpleasant information led to greater concern for self- image and social-image than did disclosure. We also found that withholding elicited more shame, inferiority and rejection than disclosure, and in Experiment 2, withholding elicited more defensive motivation than disclosure. Consistent with our model, defensive motivation was mostly explained by concern for social-image, whereas relationship repair motivation was mostly explained by concern for self-image and felt shame. We discuss implications for the literature on shame and social bonds.
Shining a Light also Casts a Shadow: Neuroimaging Incidental Findings in Neuromarketing Research
Authors: Bradfield Owen M.
Published: April 2021

Rapid growth in structural and functional brain research has led to increasing ethical discussion of what to do about incidental findings within the brains of healthy neuroimaging research participants that have potential health importance, but which are beyond the original aims of the study. This dilemma has been widely debated with respect to general neuroimaging research but has attracted little attention in the context of neuromarketing studies. In this paper, I argue that neuromarketing researchers owe participants the same ethical obligations as other neuroimaging researchers. The financial resources available to neuromarketing firms and the social value of neuromarketing studies should command greater attention to the elucidation and management of incidental findings. However, this needs to be balanced against finite resources available within most public health systems.
Pore Characteristics of Gondwana Shale of Eastern India
Authors: Sarkar Piyush , Ghosh Ranjana , Singh Kumar Hemant , Singh Trilok Nath
Published: April 2021

A complete pore characteristic of the Indian Gondwana shale is studied by combining laboratory experiments and numerical modeling. Mercury injection capillary pressure (MICP), nitrogen gas adsorption (N2GA) and scanning electron microscopy (SEM) are the primary laboratory methods used to evaluate the pore characteristics. The N2GA and MICP were coupled to estimate the pore size distribution (PSD) of Indian Gondwana shale for the first time. The estimated PSD of Gondwana shale varies between 0.5 nm to 100 µm and most of the pores of the samples fall in the micropore and mesopore category. The porosity of Gondwana shale, measured using MICP, varies from 1.13 to 8.01 %. The SEM micrographs and hysteresis pattern of isotherms reveal the presence of cylindrical, ink-bottle and slit shape pores in the samples. The BET (Brunauer-Emmett-Teller) surface area of pore for Gondwana shale varies from 3.42 m2/g to 21.5 m2/g. The FHH (Frenkel-Halsey-Hill) fractal model suggests that the Gondwana shale exhibits two types of fractal dimensions with highly complex pore geometry. The adsorption capacity of Gondwana shale is affected by the clay content. This paper attempted a different interpretation approach using experimental data and concluded that Indian Gondwana shale has high gas storage capacity.
Geomorphic Analysis, Morphometric-based Prioritization and Tectonic Implications in Chite Lui River, Northeast India
Authors: Barman Binoy Kumar , Rao Chegondi Udaya Bhaskara , Rao K. Srinivasa , Patel Adesh , Kushwaha Kamlesh , Singh SudhirKumar
Published: April 2021

River morphometry is a useful approach in basin analysis which helps to interprets fluvially originated landforms. The aim of the present work is to evaluate the morphometric and morphotectonic parameters along with prioritization for soil erosion and water availability in Chite Lui watershed. Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) is a useful approach to find out soil erosion and ground water potential zone with an aim to achieve successful management of a watershed. It helps to examine the susceptibility zone in watershed. The present paper documents the delineation of 14 sub-watersheds in Chite Lui River at 3rd order stream. Its prioritization has been performed using several morphometric parameters namely drainage density, elongation ratio and many other parameters using Analytical Hierarchical Process (AHP). Sub-watersheds are ranked from 1-14 based on soil erosion and groundwater potential zones.

The Chite Lui watershed is a fifth order drainage basin with a total area of 52.7 km2. The tectonic parameters of the watershed as the asymmetry value is 34%, indicates the structural control over the area either by uplift or tilting. The hypsometric integral value is 0.5 and the valley width height ratio is 0.05 which also suggest tectonic activity in the area. Sinuosity related many parameters along with geomorphic indices like stream power index (SPI), stream gradient index (SL) and topographic wetness index (TWI) were also calculated to suggest the watershed health. The present paper shows that the morphometric analysis is highly relevant and efficient in delineating susceptibility zones.
Field and Simulation Studies for Mechanised Depillaring below Incompetent Geological Formations of an Indian Coal Mine
Authors: Singh Amn Kumar , Kumar Ashok , Kumar Dheeraj , Singh Rajendra , Ram Sahendra , Kumar Rakesh , Singh Amit Kumar
Published: April 2021

A fully mechanised mining method using continuous miner (CM) for pillar extraction in single-pass is introduced in the year 2010 at Pinoura Mine of South Eastern Coalfields Limited, Bilaspur in India. Overall mining cycle time is reduced by single-pass pillar extraction as it does not require drivage of split galleries in pillars and support installation for such galleries. Further, inherent technical abilities of the deployed CM for faster cutting and quad-bolter for supporting, helped in faster recovery of pillars without creating any strata control issues. Rate of face advance varied between 5-15m/day with an average of 8m/day. Field observations found that CM based single-pass extraction is capable in dealing with the strata control issues during depillaring under weak and laminated (incompetent in nature) roof layers having rock mass rating value around 42. A total of eleven panels, have been depillared under the weak and laminated geology, ranging depth of cover from 59 to 149m in different panels of the mine. During field investigations in these panels, a maximum of 2.89MPa induced vertical stress is recorded and influence of caved roof over underground mining structures is observed up to 15m in the out-bye from the goaf edge. This paper deals with estimation of snook size and limiting roof movement value based on numerical simulation and field studies during the single-pass extraction below the incompetent geological formations.
A multi-channel $$\varvec{H}_\infty $$ preview control approach to load alleviation design for flexible aircraft
Authors: Khalil Ahmed , Fezans Nicolas
Published: April 2021

Gust load alleviation functions are mainly designed for two objectives: first, alleviating the structural loads resulting from turbulence or gust encounter, and hence reducing the structural fatigue and/or weight; and second, enhancing the ride qualities, and hence the passengers’ comfort. Whilst load alleviation functions can improve both aspects, the designer will still need to make design trade-offs between these two objectives and also between various types and locations of the structural loads. The possible emergence of affordable and reliable remote wind sensor techniques (e.g., Doppler LIDAR) in the future leads to considering new types of load alleviation functions as these sensors would permit anticipating the near future gusts and other types of turbulence. In this paper, we propose a preview control design methodology for the design of a load alleviation function with such anticipation capabilities, based on recent advancements on discrete-time reduced-order multi-channel $$H_\infty $$

H
∞

techniques. The methodology is illustrated on the DLR Discus-2c flexible sailplane model.
Interaction of drought and frost in tree ecophysiology: rethinking the timing of risks
Authors: Charrier Guillaume , Martin-StPaul Nicolas , Damesin Claire , Delpierre Nicolas , Hänninen Heikki , Torres-Ruiz Jose M. , Davi Hendrik
Published: April 2021

• Key message

The increase in climate variability is likely to generate an increased occurrence of both frost-induced and drought-induced damages on perennial plants. We examined how these stress factors can potentially interact and would subsequently affect the vulnerability to each other. Furthermore, we discussed how this vulnerability could be modulated by shifts in the annual phenological cycle.

Context

The edges of plant distribution are strongly affected by abiotic constraints: heat waves and drought at low latitude and elevation, cold and frost at high latitude and elevation. The increase in climate variability will enhance the probability of extreme events and thus the potential interaction of stress factors. The initial exposure to a first constraint may affect the vulnerability to a subsequent one.

Aims

Although three integrative physiological processes, namely water balance, carbon metabolism and the timing of phenological stages, have largely been studied in the response of trees to a single constraint, their interaction has rarely been investigated. How would the interaction of frost and drought constraints modulate the vulnerability to a subsequent constraint and how vulnerability to a given constraint and phenology interact?

Conclusion

We suggest that the interaction between frost and drought constraints should in the short-term influence water balance and, in the longer term, carbon metabolism, both consequently affecting further vulnerability. However, this vulnerability can be modulated by shifts in the annual phenological cycle. Significant gaps of knowledge are reported in a mechanistic framework. This framework can help to improve the current process-based models integrating the life history of the individual plant.
The space of models in machine learning: using Markov chains to model transitions
Authors: Torra Vicenç , Taha Mariam , Navarro-Arribas Guillermo
Published: April 2021

Machine and statistical learning is about constructing models from data. Data is usually understood as a set of records, a database. Nevertheless, databases are not static but change over time. We can understand this as follows: there is a space of possible databases and a database during its lifetime transits this space. Therefore, we may consider transitions between databases, and the database space. NoSQL databases also fit with this representation. In addition, when we learn models from databases, we can also consider the space of models. Naturally, there are relationships between the space of data and the space of models. Any transition in the space of data may correspond to a transition in the space of models. We argue that a better understanding of the space of data and the space of models, as well as the relationships between these two spaces is basic for machine and statistical learning. The relationship between these two spaces can be exploited in several contexts as, e.g., in model selection and data privacy. We consider that this relationship between spaces is also fundamental to understand generalization and overfitting. In this paper, we develop these ideas. Then, we consider a distance on the space of models based on a distance on the space of data. More particularly, we consider distance distribution functions and probabilistic metric spaces on the space of data and the space of models. Our modelization of changes in databases is based on Markov chains and transition matrices. This modelization is used in the definition of distances. We provide examples of our definitions.
Physiological Characteristics of Female Soccer Players and Health and Performance Considerations: A Narrative Review
Authors: Randell Rebecca K. , Clifford Thomas , Drust Barry , Moss Samantha L. , Unnithan Viswanath B. , De Ste Croix Mark B. A. , Datson Naomi , Martin Daniel , Mayho Hannah , Carter James M. , Rollo Ian
Published: April 2021

Female soccer has seen a substantial rise in participation, as well as increased financial support from governing bodies over the last decade. Thus, there is an onus on researchers and medical departments to develop a better understanding of the physical characteristics and demands, and the health and performance needs of female soccer players. In this review, we discuss the current research, as well as the knowledge gaps, of six major topics: physical demands, talent identification, body composition, injury risk and prevention, health and nutrition. Data on female talent identification are scarce, and future studies need to elucidate the influence of relative age and maturation selection across age groups. Regarding the physical demands, more research is needed on the pattern of high-intensity sprinting during matches and the contribution of soccer-specific movements. Injuries are not uncommon in female soccer players, but targeting intrinsically modifiable factors with injury prevention programmes can reduce injury rates. The anthropometric and physical characteristics of female players are heterogeneous and setting specific targets should be discouraged in youth and sub-elite players. Menstrual cycle phase may influence performance and injury risk; however, there are few studies in soccer players. Nutrition plays a critical role in health and performance and ensuring adequate energy intake remains a priority. Despite recent progress, there is considerably less research in female than male soccer players. Many gaps in our understanding of how best to develop and manage the health and performance of female soccer players remain.
Non-pharmacological Interventions for Adults with Autism: a Systematic Review of Randomised Controlled Trials
Authors: Speyer Renée , Chen Yu-Wei , Kim Jae-Hyun , Wilkes-Gillan Sarah , Nordahl-Hansen Anders Johan , Wu Ho Ching , Cordier Reinie
Published: April 2021

To determine the effects of non-pharmacological randomised controlled trials in adults with autism, a systematic review was conducted across five electronic databases. A total of 3865 abstracts were retrieved, of which 41 articles met all inclusion criteria: randomised controlled trial; non-pharmacological intervention; adults with autism; and English publication. Twenty included studies had strong methodological quality ratings. No meta-analysis could be performed due to heterogeneity between studies. Articles reported on interventions for (1) social functioning and language skills, (2) vocational rehabilitation outcomes, (3) cognitive skills training, and (4) independent living skills. Social functioning was the most studied intervention. PEERS for young adults and Project SEARCH plus ASD support interventions had the strongest evidence. Emerging evidence suggests non-pharmacological interventions could be effective.
Impact of moderate exercise on fatty acid oxidation in pancreatic β-cells and skeletal muscle
Authors: Langlois A. , Forterre A. , Pinget M. , Bouzakri K.
Published: April 2021

Fatty acids (FA) play a crucial role in glycaemia regulation in healthy and metabolic disorders conditions through various mechanisms. FA oxidation is one of the processes involved in lipid metabolism and can be modulated by exercise. Nowadays, physical activity is known to be an effective strategy for the prevention and treatment of Type 2 Diabetes. Moreover, its intensity, its duration, the sex-gender, the prandial state, exerkines… are as many parameters that can influence glycaemic control. However, the widely debated question is to determine the best type of exercise for patients with metabolic disorders. In this review, we will discuss the impact of exercise intensity, especially moderate activity, on glycaemic control by focussing on FA oxidation in pancreatic β-cells and skeletal muscle. Finally, thanks to all the recent data, we will determine whether moderate physical activity is a good therapeutic strategy and if FA oxidation represents a target of interest to treat diabetic, obese and insulin-resistant patients.
Generating a heterosexual bipartite network embedded in social network
Authors: Azizi Asma , Qu Zhuolin , Lewis Bryan , Hyman James Mac
Published: April 2021

We describe an approach to generate a heterosexual network with a prescribed joint-degree distribution embedded in a prescribed large-scale social contact network. The structure of a sexual network plays an important role in how all sexually transmitted infections (STIs) spread.
Generating an ensemble of networks that mimics the real-world is crucial to evaluating robust mitigation strategies for controlling STIs. Most of the current algorithms to generate sexual networks only use sexual activity data, such as the number of partners per month, to generate the sexual network. Real-world sexual networks also depend on biased mixing based on age, location, and social and work activities. We describe an approach to use a broad range of social activity data to generate possible heterosexual networks. We start with a large-scale simulation of thousands of people in a city as they go through their daily activities, including work, school, shopping, and activities at home. We extract a social network from these activities where the nodes are the people, and the edges indicate a social interaction, such as working in the same location. This social network captures the correlations between people of different ages, living in different locations, their economic status, and other demographic factors. We use the social contact network to define a bipartite heterosexual network that is embedded within an extended social network. The resulting sexual network captures the biased mixing inherent in the social network, and models based on this pairing of networks can be used to investigate novel intervention strategies based on the social contacts among infected people. We illustrate the approach in a model for the spread of chlamydia in the heterosexual network representing the young sexually active community in New Orleans.
3D Reconstruction of Bridges from Airborne Laser Scanning Data and Cadastral Footprints
Authors: Goebbels Steffen
Published: April 2021

The given paper describes a method for automatic 3D reconstruction of bridges from cadastral footprints and airborne laser scanning point clouds. The reconstructed bridges are used to enrich 3D city models. Unlike roofs, decks of bridges are typically smooth without ridge lines or step edges. Therefore, established methods for roof reconstruction are not suitable for bridges. The standard description language for semantic city models is CityGML. This specification of the Open Geospatial Consortium assumes that surfaces are composed of planar polygons. The approximation of smooth decks by planar polygons is achieved by using a medial axis tree. Instead of the medial axis of the footprint, a modified medial axis is computed that does not consider counter bearing edges. The resulting tree represents centerline connections between all counter bearing edges and, in conjunction with filtered height values of a point cloud, serves as the basis for approximation with polygons. In addition to modeling decks, superstructures such as pylons and cables are also derived from the point cloud. For this purpose, planes carrying many superstructure points are detected using the Random Sampling Consensus Algorithm (RANSAC). Images are generated by projecting points onto these planes. Then, image processing methods are used to find connected contours that are extruded to form 3D objects. The presented method was successfully applied to all bridges of two German cities as well as to large bridges built over the Rhine River.
Dynamo: Handling Scientific Data Across Sites and Storage Media
Authors: Iiyama Yutaro , Maier Benedikt , Abercrombie Daniel , Goncharov Maxim , Paus Christoph
Published: April 2021

Dynamo is a full-stack software solution for scientific data management. Dynamo’s architecture is modular, extensible, and customizable, making the software suitable for managing data in a wide range of installation scales, from a few terabytes stored at a single location to hundreds of petabytes distributed across a worldwide computing grid. This article documents the core system design of Dynamo and describes the applications that implement various data management tasks. A brief report is also given on the operational experiences of the system at the CMS experiment at the CERN Large Hadron Collider and at a small-scale analysis facility.
Correction to: Earthquake-induced clastic dyke and fluid inflow at the Miguel Burnier manganese-ore deposit, Quadrilátero Ferrífero of Minas Gerais, Brazil
Authors: DeFerreira Tiago Henrique , Cabral Alexandre Raphael , Rios Francisco Javier
Published: April 2021

A correction to this paper has been published: https://doi.org/10.1007/s42452-021-04481-z
Data assimilation of structural deformation using finite element simulations and single-perspective projection data based on the example of X-ray imaging
Authors: Butz Ines , Moser Stefan , Nau Siegfried , Hiermaier Stefan
Published: April 2021

Gaining insight in the complex deformation processes inside a vehicle during the process of crashing is to date only possible via numerical simulations. To validate these simulations experimentally, high speed, high-energy X-ray imaging is currently developed. So far, X-ray images have only been compared qualitatively to simulations as quantitative analysis proves challenging: Three dimensional (3D) information has to be reconstructed from two dimensional (2D) X-ray images showing overlapping parts which undergo complex deformation. We propose a novel analysis method which adapts ideas from data assimilation to reconstruct three dimensional motion and deformation from two dimensional measurements using high speed X-ray video data and finite element (FE) simulations. Furthermore, we analyze the accuracy of the approach based on an observing system simulation experiment.
Influence of school culture on pedagogical knowledge sharing between an education student and a training teacher
Authors: Caskova Katerina , Chudy Stefan
Published: April 2021

Students undergo a demanding socialization process at the beginning of their practice, which they subjectively perceive. At the time of this socialization process, the process of knowledge sharing begins, and this process must include reflection on and explanation of new pedagogical experience if students are to establish suitable conditions for practice. Not only the training teacher but also others who form the so-called school culture may neglect to address new experiences and provide sufficient support. This research aimed to explore the effects of the school culture on a student’s career at the beginning of her teaching and pedagogical knowledge sharing. Based on the results of the analysis, we answered the following research question: “How does the school culture influence a student’s pedagogical knowledge sharing with her training teacher?” We found that the student’s subjective theories should correspond with the school culture; otherwise, the student may leave the profession earlier. In addition, support from colleagues and sufficient explanation (modelling of the teacher’s thoughts) in school practice create a space to share pedagogical knowledge and clarify the student’s doubts about education. We identified the teacher's career, the school culture, and the training teacher as sources of support for the education student. The data were collected via interviews with the use of the “clean language” method and analysed through open coding.
Making Resilient Decisions for Sustainable Circularity of Fashion
Authors: Palm Celinda , Cornell Sarah E. , Häyhä Tiina
Published: April 2021

The fashion and textiles industry, and policymakers at all levels, are showing an increased interest in the concept of circular economy as a way to decrease business risks and negative environmental impacts. However, focus is placed mainly on the material ‘stuff’ of textile fashion and its biophysical harms. The current material focus has several shortcomings, because fashion is a social-ecological system and cannot be understood merely by addressing its environmental dimensions. In this paper, we rethink the fashion system from a critical social-ecological perspective. The driver-state-response framework shows social drivers and ecological impacts as an adaptive social-ecological system, exposing how these interacting aspects need to be addressed for sustainable and resilient implementation of circular economy. We show how current responses to global sustainability challenges have so far fallen short. Our overall aim is to expand possibilities for reframing responses that better reflect the complex links between the global fashion system, culture and creativity and the dynamics of the living planet. We argue that reducing planetary pressure from the global fashion and textiles industry requires greater recognition of the system’s social drivers with more emphasis on the many cross-scale links between social and ecological dimensions. Resilient decisions aiming for sustainable circularity of the fashion industry must therefore pay attention to social activitiesbeyondthe industry value chain, not just material flows within it.
A Tattoo on my Brain
Authors: Gibbs Daniel , Barker Teresa H.
Published: April 2021

Dr Daniel Gibbs is one of 50 million people worldwide with an Alzheimer's disease diagnosis. Unlike most patients with Alzheimer's, however, Dr Gibbs worked as a neurologist for twenty-five years, caring for patients with the very disease now affecting him. Also unusual is that Dr Gibbs had begun to suspect he had Alzheimer's several years before any official diagnosis could be made. Forewarned by genetic testing showing he carried alleles that increased the risk of developing the disease, he noticed symptoms of mild cognitive impairment long before any tests would have alerted him. In this highly personal account, Dr Gibbs documents the effect his diagnosis has had on his life and explains his advocacy for improving early recognition of Alzheimer's. Weaving clinical knowledge from decades caring for dementia patients with his personal experience of the disease, this is an optimistic tale of one man's journey with early-stage Alzheimer's disease.
Aileron size and location to minimise induced drag during rolling-moment production at zero rolling rate
Authors: Brincklow J.R. , Hunsaker D.F.
Published: April 2021

Most modern aircraft employ discrete ailerons for roll control. The induced drag, rolling moment, and yawing moment for an aircraft depend in part on the location and size of the ailerons. In the present study, lifting-line theory is used to formulate theoretical relationships between aileron design and the resulting forces and moments. The theory predicts that the optimum aileron geometry is independent of prescribed lift and rolling moment. A numerical potential flow algorithm is used to evaluate the optimum size and location of ailerons for a wide range of planforms with varying aspect ratio and taper ratio. Results show that the optimum aileron design to minimise induced drag always extends to the wing tip. Impacts to induced drag and yawing moment are also considered, and results can be used to inform initial design and placement of ailerons on future aircraft. Results of this optimisation study are also compared to theoretical optimum results that could be obtained from morphing-wing technology. Results of this comparison can be used to evaluate the potential benefits of using morphing-wing technology rather than traditional discrete ailerons.
Conceptualizing Work Integration Social Enterprises under International Human Rights Law
Authors: HOFMAYER Sarah
Published: April 2021

This article outlines one form Work Integration Social Enterprises (WISEs) can take under international human rights law. It builds on the conviction that social enterprises, and WISEs more specifically, are compatible with the foundations and principles human rights are built on. However, there is a lack of engagement with social enterprises generally, in international human rights law. Building on the characteristics of WISEs and substantive equality theories, it is suggested that they can be conceptualized under the heading of affirmative measures. It is expected that this conceptualization can provide a starting point for increasing the visibility of the sector, while simultaneously ensuring its compliance with human rights standards, most notably under the human right to work. The article further points out WISEs and social enterprises’ potential more generally, illustrating how businesses can position themselves as active agents contributing to the realization of human rights.
The Plectic Weight Filtration on Cohomology of Shimura Varieties and Partial Frobenius
Authors: Wu Zhiyou
Published: April 2021

We prove that there is a natural plectic weight filtration on the cohomology of Hilbert modular varieties in the spirit of Nekovář and Scholl. This is achieved with the help of Morel’s work on weight t-structures and a detailed study of partial Frobenius. We prove in particular that the partial Frobenius extends to toroidal and minimal compactifications.
Teacher stress, anxiety and depression at the beginning of the academic year during the COVID-19 pandemic
Authors: Santamaría María Dosil , Mondragon Nahia Idoiaga , Santxo Naiara Berasategi , Ozamiz-Etxebarria Naiara
Published: April 2021

Background

Faced with the situation of COVID-19, teachers are dealing with new measures, insecurity and a lack of clear guidelines. The aim of this study is to analyse the levels of stress, anxiety and depression of teachers in the north of Spain.

Methods

This study was conducted with 1633 teachers from the Department of Education of the Basque Autonomous Community (BAC) and Navarre, all of whom are professionals working in various educational centres, from nursery education to university studies, with an average age of 42 years (M= 42.02;s.d.= 10.40). The Spanish version of the Depression Anxiety and Stress Scale-21 was used.

Results

The results show that a high percentage of teachers have symptoms of stress, anxiety and depression. Women show significantly more symptoms of stress and anxiety than men, those who have children have more depressive symptoms than those who do not, and people with chronic pathology or those who live with others with chronic pathology have more stress, anxiety and depression.

Conclusions

This study indicates the importance of attending to the mental health of teachers, particularly women, those who have children, and those who have a chronic pathology or a family member with a chronic pathology.
How Austerity Politics Led to Tuition Charges at the University of California and City University of New York
Authors: Nations Jennifer M.
Published: April 2021

The size and cost of US public higher education, funded largely by government, grew continuously for nearly twenty-five years after World War II. In the late 1960s, as the nation's economic growth slowed, the question of who should pay for higher education came under fresh political scrutiny. Decades-old no-tuition policies at the University of California and The City University of New York (CUNY) became targets of neoconservative critiques of the proper role of government support for public services. In California, this was done as Governor Ronald Reagan promoted a partisan austerity to win favor with business and other conservative elites. He justified cuts to higher education financing as a rebuke of protesting students and inept administrators and, later, as financially necessary given voters’ reluctance to pay more taxes. In contrast, federal and New York State politicians forced austerity on city leaders to satisfy bond holders during New York City's severe fiscal crisis. Reformers argued that CUNY's no-tuition policy was emblematic of the city's overindulgence of its residents. No-tuition policies became impossible to defend in the context of the stalled economy and growing conservative movement, whose members embraced government austerity.
High-power linear-polarization burst-mode all-fibre laser and generation of frequency-adjustable microwave signal
Authors: He Xuan , Zhang Bin , Liu Shuailin , Yang Linyong , Yao Jinmei , Wu Qilin , Zhao Yuxin , Xun Tao , Hou Jing
Published: April 2021

Narrowband microwave generation with tuneable frequency is demonstrated by illuminating a photoconductive semiconductor switch (PCSS) with a burst-mode fibre laser. The whole system is composed of a high-power linearly polarized burst-mode pulsed fibre laser and a linear-state PCSS. To obtain a high-performance microwave signal, a desired envelope of burst is necessary and a pulse pre-compensation technique is adopted to avoid envelope distortion induced by the gain-saturation effect. Resulting from the technique, homogenous peak power distribution in each burst is ensured. The maximum energy of the laser burst pulse reaches 200 μJ with a burst duration of 100 ns at the average power of 10 W, corresponding to a peak power of 4 kW. When the PCSS is illuminated by the burst-mode fibre laser, narrowband microwave generation with tuneable frequency (0.80–1.12 GHz) is obtained with a power up to 300 W. To the best of the authors’ knowledge, it is the first demonstration of frequency-tuneable narrowband microwave generation based on a fibre laser. The high-power burst-mode fibre laser reported here has great potential for generating high-power arbitrary microwave signals for a great deal of applicable demands such as smart adaptive radar and intelligent high-power microwave systems.
Acceptability and effectiveness of antimicrobial stewardship implementation strategies on fluoroquinolone prescribing
Authors: Suda Katie J. , Clore Gosia S. , Evans Charlesnika T. , Reisinger Heather Schacht , Kale Ibuola , Echevarria Kelly , Sherlock Stacey Hockett , Perencevich Eli N. , Goetz Matthew Bidwell ,   for the VA-CDC Practice-Based Research Network
Published: April 2021

Objective:

To assess the effectiveness and acceptability of antimicrobial stewardship-focused implementation strategies on inpatient fluoroquinolones.

Methods:

Stewardship champions at 15 hospitals were surveyed regarding the use and acceptability of strategies to improve fluoroquinolone prescribing. Antibiotic days of therapy (DOT) per 1,000 days present (DP) for sites with and without prospective audit and feedback (PAF) and/or prior approval were compared.

Results:

Among all of the sites, 60% had PAF or prior approval implemented for fluoroquinolones. Compared to sites using neither strategy (64.2 ± 34.4 DOT/DP), fluoroquinolone prescribing rates were lower for sites that employed PAF and/or prior approval (35.5 ± 9.8; P = .03) and decreased from 2017 to 2018 (P < .001). This decrease occurred without an increase in advanced-generation cephalosporins. Total antibiotic rates were 13% lower for sites with PAF and/or prior approval, but this difference did not reach statistical significance (P = .20). Sites reporting that PAF and/or prior approval were “completely” accepted had lower fluoroquinolone rates than sites where it was “moderately” accepted (34.2 ± 5.7 vs 48.7 ± 4.5; P < .01). Sites reported that clinical pathways and/or local guidelines (93%), prior approval (93%), and order forms (80%) “would” or “may” be effective in improving fluoroquinolone use. Although most sites (73%) indicated that requiring infectious disease consults would or may be effective in improving fluoroquinolones, 87% perceived implementation to be difficult.

Conclusions:

PAF and prior approval implementation strategies focused on fluoroquinolones were associated with significantly lower fluoroquinolone prescribing rates and nonsignificant decreases in total antibiotic use, suggesting limited evidence for class substitution. The association of acceptability of strategies with lower rates highlights the importance of culture. These results may indicate increased acceptability of implementation strategies and/or sensitivity to FDA warnings.
Un cuarto de siglo de arqueología histórica en las fronteras y espacios rurales de Argentina
Authors: Pedrotta Victoria , Bagaloni Vanesa N.
Published: April 2021

Desde hace unos 25 años, en Argentina comenzó el desarrollo de un nuevo campo de investigación arqueológica centrado en los espacios que sucesivamente funcionaron como fronteras interétnicas y/o territorios rurales en la región pampeana, el norte de Patagonia y sus inmediaciones, desde la colonia hasta la consolidación del estado-nación, a fines del siglo diecinueve. Este campo de estudio, en sentido amplio “arqueología de los espacios fronterizos y rurales”, se encuentra consolidado dentro de la arqueología histórica argentina mediante un número creciente de proyectos y el trabajo sistemático de distintos equipos que, desde diferentes perspectivas teórico-metodológicas, han recorrido múltiples caminos. Aquí se efectúa un análisis crítico sobre el desarrollo, el estado actual y las perspectivas de dicha especialidad, centrado en dos ejes: (1) su surgimiento y evolución y (2) el perfil y la inserción de los equipos de investigación. Ambos ejes muestran su gran dinamismo que se refleja en la diversificación sostenida de los temas, espacios y períodos abordados. El análisis pone en diálogo este nuevo campo, uno de los rasgos más destacados de la arqueología argentina en las últimas décadas, tanto con las coyunturas académico-institucionales y los contextos históricos locales como con el ámbito mayor de la arqueología histórica sudamericana.
The Search for an Anchor: Living Constitutionalism from the Progressives to Trump
Authors: TerBeek Calvin
Published: April 2021

Over a century after the Progressives’ devised “living constitutionalism,” its latter day adherents have fought conservatives’ originalism to an intellectual standstill and a political rout. Bookended by discussions of three books by legal liberals (Jack Balkin, Erwin Chemerinsky, Geoffrey Stone and David Strauss) and a book and article by progressive constitutional scholars (Mark Tushnet, David Pozen and Adam Samaha), this essay argues that legal liberalism today is intellectually exhausted. In developing a “critical constitutionalism,” those to their left have better identified constitutional law and theory’s pathologies and potential. The overarching claim is that professional and ideological factors have led legal liberals to misapprehend the uses and limitations of constitutional theory. The essay concludes by suggesting legal liberals move past debates about originalism and begin to think anew about what (legal) liberalism has to offer American constitutionalism.
The impact of natural fractures on heat extraction from tight Triassic sandstones in the West Netherlands Basin: a case study combining well, seismic and numerical data
Authors: Boersma Quinten D. , Bruna Pierre Olivier , de Hoop Stephan , Vinci Francesco , Moradi Tehrani Ali , Bertotti Giovanni
Published: April 2021

The positive impact that natural fractures can have on geothermal heat production from low-permeability reservoirs has become increasingly recognised and proven by subsurface case studies. In this study, we assess the potential impact of natural fractures on heat extraction from the tight Lower Buntsandstein Subgroup targeted by the recently drilled NLW-GT-01 well (West Netherlands Basin (WNB)). We integrate: (1) reservoir property characterisation using petrophysical analysis and geostatistical inversion, (2) image-log and core interpretation, (3) large-scale seismic fault extraction and characterisation, (4) Discrete Fracture Network (DFN) modelling and permeability upscaling, and (5) fluid-flow and temperature modelling. First, the results of the petrophysical analysis and geostatistical inversion indicate that the Volpriehausen has almost no intrinsic porosity or permeability in the rock volume surrounding the NLW-GT-01 well. The Detfurth and Hardegsen sandstones show better reservoir properties. Second, the image-log interpretation shows predominately NW–SE-orientated fractures, which are hydraulically conductive and show log-normal and negative-power-law behaviour for their length and aperture, respectively. Third, the faults extracted from the seismic data have four different orientations: NW–SE, N–S, NE–SW and E–W, with faults in proximity to the NLW-GT-01 having a similar strike to the observed fractures. Fourth, inspection of the reservoir-scale 2D DFNs, upscaled permeability models and fluid-flow/temperature simulations indicates that these potentially open natural fractures significantly enhance the effective permeability and heat production of the normally tight reservoir volume. However, our modelling results also show that when the natural fractures are closed, production values are negligible. Furthermore, because active well tests were not performed prior to the abandonment of the Triassic formations targeted by the NLW-GT-01, no conclusive data exist on whether the observed natural fractures are connected and hydraulically conductive under subsurface conditions. Therefore, based on the presented findings and remaining uncertainties, we propose that measures which can test the potential of fracture-enhanced permeability under subsurface conditions should become standard procedure in projects targeting deep and potentially fractured geothermal reservoirs.
‘The Dead are Watching Us’: A Landscape Study of Prehistoric Rock-cut Tomb Cemeteries in Ossi, Sardinia, Italy
Authors: Robin Guillaume , Soula Florian , Tramoni Pascal , Manca Laura , Lilley Kirsty
Published: April 2021

The island of Sardinia is well known for its Late Neolithic and Copper Age underground rock-cut tombs that were used over generations for collective burials. Many tombs were decorated to resemble house interiors and cemeteries are often referred to as villages of the dead. Research so far has focused on excavating stratigraphic contexts within some of these monuments, or on typological classifications of tomb plans and wall decorations, but the landscape context of the cemeteries and their relationship to settlements have been overlooked. The article presents the results of two seasons of survey in Ossi (north-west Sardinia), focusing on two major cemeteries (Mesu ‘e Montes and S’Adde ‘e Asile). Combining fieldwalking, mapping and 3D recording techniques, the survey provides a comprehensive documentation of the cemeteries (from the underground architecture of individual tombs to their landscape setting) and yields evidence of prehistoric settlements in their vicinity. The article discusses the topographic and visual relationships between the tombs and the residential areas and how they may reflect social interactions between the living and the dead in late prehistoric Sardinia.
NEW CHRONOLOGICAL INFORMATION FROM RADIOCARBON DATING OF HUMAN REMAINS AT JACOB’S WELL, NABLUS, PALESTINE
Authors: Abu Alsaud Loay , Al-Qobbaj Amer , Al-Khateeb Mohammad , Fanjul Peraza Alfonso
Published: April 2021

Jacob’s Well, located in modern city of Nablus and ancient Shechem (Tall Balata) in the northern West Bank of Palestine, attracts modern day tourists and pilgrims. It is found in the eastern suburbs of the city. Since 333 AD, pilgrims have been writing accounts of the well, and it has been venerated by both Christian and Jewish communities throughout its history. It is believed to be the well referred to in the New Testament, where Jesus conversed with a Samaritan woman, the orthodox saint, Photini. It now forms the central feature in the crypt of the St Photini Greek Orthodox church in the walled grounds of a monastery. In order to gain more information on the chronology of the site, we analyzed human skeletal remains found at the site in 1997. These consist of three skulls and a femur. One of the skulls was found in a sarcophagus alongside the church and the two other skulls and a femur were found in a burial ground alongside the monastery, north of the church, over which a room has now been built. Radiocarbon analysis reveals that the remains date to four historical periods or events: the early Christian period, before structural additions to the well by Constantine the Great in the fourth century; the Samaritan Revolts (AD 529 and 556), the Sassanid Invasion (AD 614–628), and Abbasid rule (AD 750–1258). Dating of one skull suggests it may have been that of Germanus, a fourth century bishop of Nablus, and that there may have been a very early structure, shrine, or burial chamber at the site before the fourth century. We provide contextual information based on historical and contemporary literature.
Genesis of gabbroic intrusions in the Arabian Shield, Saudi Arabia: mineralogical, geochemical and tectonic fingerprints of the Neoproterozoic arc magmatism
Authors: Ali Shehata , Alshammari Abdullah S.
Published: April 2021

The Arabian Shield of Saudi Arabia represents part of the Arabian–Nubian Shield and forms an exposure of juvenile continental crust on the eastern side of the Red Sea rift. Gabbroic intrusions in Saudi Arabia constitute a significant part of the mafic magmatism in the Neoproterozoic Arabian Shield. This study records the first detailed geological, mineralogical and geochemical data for gabbroic intrusions located in the Gabal Samra and Gabal Abd areas of the Hail region in the Arabian Shield of Saudi Arabia. Geological field relations and investigations, supported by mineralogical and geochemical data, indicate that the gabbroic intrusions are generally unmetamorphosed and undeformed, and argue for their post-collisional emplacement. Their mineralogical and geochemical features reveal crystallization from hydrous, mainly tholeiitic, mafic magmas with arc-like signatures, which were probably inherited from the previous subduction event in the Arabian–Nubian Shield. The gabbroic rocks exhibit sub-chondritic Nb/U, Nb/Ta and Zr/Hf ratios, revealing depletion of their mantle source. Moreover, the high ratios of (Gd/Yb)N and (Dy/Yb)N indicate that their parental mafic melts were derived from a garnet-peridotite source with a garnet signature in the mantle residue. This implication suggests that the melting region was at a depth exceeding ∼70–80 km at the garnet stability field. They have geochemical characteristics similar to other post-collisional gabbros of the Arabian–Nubian Shield. Their origin could be explained by adiabatic decompression melting of depleted asthenosphere that interacted during ascent with metasomatized lithospheric mantle in an extensional regime, likely related to the activity of the Najd Fault System, at the end of the Pan-African Orogeny.