bluuebunny/crossref_metadata_2025_split huggingface dataset:
Scalable multi‐agent formation control under switching leader–follower directed graph
Authors: Djamari Djati Wibowo , Nurprasetio Ignatius Pulung , Veza Ibham , Triawan Farid , Budiman Bentang Arief 
Published: October 2021

AbstractThis work considers formation control of single integrator agents interconnected under switching leader–follower network, where the size of the formation is scalable via a scaling factor determined by a leader agent. Past works on scalable formation are limited to the case where the communication network is considered to be fixed. This work proposes a new distributed algorithm for scalable formation problem that works under a switching network. The scaling is based on the location of the origin of the formation which can be adjusted by the leader agent. In addition, agents move together along a center path where the offset of the center path can also be adjusted by the leader agent. Numerical examples are shown to illustrate the proposed approach.
The gamma‐ray emission from young radio galaxies and quasars
Authors: Principe Giacomo , Di Venere Leonardo , Migliori Giulia , Orienti Monica , D'Ammando Filippo ,   the Fermi‐LAT Collaboration
Published: October 2021

AbstractAccording to radiative models, radio galaxies are predicted to produce γ‐rays from the earliest stages of their evolution onwards. The study of the high‐energy emission from young radio sources is crucial for providing information on the most energetic processes associated with these sources, the actual region responsible for this emission, as well as the structure of the newly born radio jets. Despite systematic searches for young radio sources at γ‐ray energies, only a handful of detections have been reported so far. Taking advantage of more than 11 years of Fermi‐large area telescope (LAT) data, we investigate the γ‐ray emission of 162 young radio sources (103 galaxies and 59 quasars), the largest sample of young radio sources used so far for a γ‐ray study. We analyzed the Fermi‐LAT data of each source separately to search for a significant detection. In addition, we performed the first stacking analysis of this class of sources in order to investigate the γ‐ray emission of the young radio sources that are undetected at high energies. In this note, we present the results of our study and we discuss their implications for the predictions of γ‐ray emission from this class of sources.
Rapid and sensitive detection of Aspergillus niger using permeabilization based on tris buffer containing hydrazine
Authors: Kwon Jungwook , Jeon Jun Hui , Yang Sung Ik , Yang Haesik 
Published: October 2021

AbstractIt is challenging to convert redox metabolites present inside fungi into measurable signals via permeabilization because of the fungi's thick and rigid cell walls. We report that Aspergillus niger (A. niger) can be detected via the electrochemical measurement of redox metabolites excreted by a low level of permeabilization of the cell wall of A. niger, when incubated in tris buffer containing hydrazine. Electrochemical signals of redox metabolites are amplified by electrochemical–chemical redox cycling, in which hydrazine acts as a reductant for rapid redox cycling. The detection method is specific to A. niger among the major three fungi causing aspergillosis. The calculated detection limit for A. niger is ~2 × 102 CFU/ml despite the incubation period being only 5 min, indicating that the detection method is highly sensitive and rapid. The detection method does not require a wash step, specific affinity binding, or pretreatment step, indicating that it is a simple method.
Circular business model implementation: A capability development case study from the manufacturing industry
Authors: Reim Wiebke , Sjödin David , Parida Vinit 
Published: October 2021

AbstractCircular business models (CBMs) have huge potential to deliver economic, social, and environmental benefits, but CBMs have yet to be implemented widely in industrial settings. One reason is that they are often presented as one‐size‐fits‐all solutions, but this is misplaced because product‐specific criteria and company capabilities determine the correct choice and implementation of CBMs. Therefore, the purpose of this paper is to investigate how CBM selection and capability development facilitates the implementation of CBMs. For this purpose, we have adopted a qualitative research approach and undertaken 25 explorative interviews in three large Swedish manufacturing companies. In this paper, a CBM implementation framework consisting of two parts has been developed. The first part addresses the choice of the appropriate CBM based on tactical configurations. The second part provides a capability development path by explicating underlying routines that need to be progressively developed in order to move smoothly to more advanced CBMs.
Consumer adoption of access‐based product‐service systems: The influence of duration of use and type of product
Authors: Tunn Vivian S. C. , Van den Hende Ellis A. , Bocken Nancy M. P. , Schoormans Jan P. L. 
Published: October 2021

AbstractAccess‐based product‐service systems (AB‐PSS) are business models that can potentially decouple the satisfaction of consumer needs from environmental impacts. Hence, they have been promoted for the circular economy. Their sustainability potential has not yet been realised because consumer adoption is lagging. Although this challenge has been studied for two decades, knowledge to identify and address AB‐PSS adoption barriers that matter to consumers is lacking. We hypothesise that the duration of use, the time a consumer obtains exclusive access to a specific product (short‐term vs. long‐term) and the type of product (bicycles vs. clothing) moderate the importance of AB‐PSS adoption barriers to consumers. We compared several adoption barriers across four AB‐PSS and found that the duration of use and the type of product significantly moderated the importance of some AB‐PSS adoption barriers. More specifically, the Effort to access has a higher influence on consumer preference for short‐term AB‐PSS, whereas Product quality has a higher influence on consumer preference for long‐term AB‐PSS. We also found that Effort to access and Product characteristics were more important for bicycle AB‐PSS, whereas Contamination and Product quality were more important for clothing AB‐PSS. These insights help companies to identify and design out key AB‐PSS consumer adoption barriers.
Fulfilling expectations or overachieving: The role of market values in the linkage between environmental and financial performance
Authors: Rintala Oskari , Laari Sini , Solakivi Tomi , Töyli Juuso 
Published: October 2021

AbstractThis article adds the influence of institutional settings in the relationship between companies' environmental and financial performance by arguing that firms can leverage their financial performance by conforming to individual values prevalent in (inter)national markets. The values and environmental beliefs of individuals, as available in European Social Survey 2016, were studied together with the environmental and financial performance data of European companies from the Eikon database (n = 920). Countries were grouped based on acquired individual‐level behavioural profiles through multilevel latent profile analysis. Moderation analysis was then utilised to determine the effect of country group on the relationship between the companies' environmental and financial performance. Results indicated that the relationship is negative in countries where disregarding environmentalism‐related values is relatively more common. Moreover, businesses should be aware of and comply with market values to avoid costs and capitalise on environmental performance.
Imperfectly perfect: Examining psychosocial safety climate's influence on the physical and psychological impact of perfectionism in the practice of law
Authors: Gazica Michele W. , Powers Samantha Rae , Kessler Stacey R. 
Published: October 2021

AbstractExisting evidence suggests that perfectionism is related to depressive symptoms, burnout, and clinical disorders and that socially prescribed, rather than self‐oriented, perfectionism is the most maladaptive. Thus, social expectations of perfection can have detrimental effects on workers that may result in negative organizational outcomes. Using a sample of 176 Arizona attorneys, this two‐wave longitudinal study examined whether psychosocial safety climate (PSC) may reduce perfectionist ideals and, in turn, improve employee well‐being. Expectedly, PSC negatively influenced physical and psychological distress 2 months later directly and indirectly via socially prescribed perfectionism, suggesting that the beneficial impacts of positive PSCs may manifest over a relatively short period of time. Contrarily, self‐oriented perfectionism was not related to PSC, suggesting a demand‐resource mismatch, and positively related to physical symptoms only. These results suggest a more complex relationship between self‐oriented perfectionism and employee well‐being, perhaps depending on other variables.
Using the power threat meaning framework to explore birth parents' experiences of compulsory child removal
Authors: Enlander Abi , Simonds Laura , Hanna Paul 
Published: October 2021

AbstractIn 2019–2020, 80,000 children in England were looked after by the state or adopted. Whilst extensive research has explored the experiences and outcomes of children in the care system, much less research has focused on the experiences of their parents. This paper uses the Power Threat Meaning Framework to provide a qualitative synthesis of literature exploring the experiences of birth parents in England who have had a child removed from their care by the state in order to understand how early interpersonal adversity interacts with social disadvantage to bring these families to the attention of child protection services. This paper aims to problematise the individualistic discourse blaming parents who cannot look after their children and offer an alternative perspective by examining the impact of developmental trauma and systemic adversity on birth parents prior to, during and following care proceedings. This paper argues that significant policy changes are needed to support vulnerable families, with an emphasis on trauma‐informed care and tackling levels of deprivation. This approach challenges psychology and psychiatry (Psy) professionals to use their privileged position to call for broader societal change to address the root causes of distress within this group. Please refer to the Supplementary Material section to find this article's Community and Social Impact Statement.
Tetrametallic Copper Complex to Nanoscale Copper: Selective and Switchable Dehydrogenation‐Hydrogenation under Light
Authors: Shelte Amishwar Raysing , Sarmah Kasturi , Guha Ankur K. , Pratihar Sanjay 
Published: October 2021

AbstractA discrete, photoactive, ultrafine copper nanocluster of fewer than hundreds of atoms with stimuli‐responsive switchable redox‐active states is highly desired to control two different antagonistic reactions. Herein, a mixed‐valent tetrametallic copper complex (C‐1) of N−O‐N Schiff base ligand is disclosed, in which the five different Cu−Cu interactions were used to generate photoactive nanoscale copper [LCu0n, S‐1] through the reduction of coordinated imine to the amine of C‐1. The presence of a ligand provides stability and helps to homogenize the material (S‐1) in the organic solvent. The cluster showed stimuli (O2/light)‐responsive switching between its reduced (S‐1) and oxidized [LCu0n−mCuOm, S‐2] states that allows it to serve as a highly and poorly active (bistate, relative rate >5–12 fold) catalyst for the dehydrogenation of alcohols to aldehydes and hydrogenation of nitroaromatics to amino aromatics under the light.
The impact of Oncotype DX testing on adjuvant chemotherapy decision making in 1–3 node positive breast cancer
Authors: Malam Yogeshkumar , Rabie Mohamed , Geropantas Konstantinos , Alexander Susanna , Pain Simon , Youssef Mina 
Published: October 2021

AbstractBackgroundOncotype DX testing has reduced the use of adjuvant chemotherapy in node‐negative early breast cancer but less is known about its impact in node positive patients.AimThis study aimed to investigate the impact of Oncotype DX gene assay testing on the decision to offer adjuvant chemotherapy in oestrogen positive, human epidermal growth factor receptor 2 negative, 1–3 lymph node positive patients.MethodsRetrospective review of all node positive patients who underwent Oncotype DX testing at a single centre. Clinicopathological data, as well as estimated survival benefit data (from the PREDICT tool), was evaluated by a multidisciplinary group of surgeons and oncologists. Treatment decisions based on clinicopathological data were compared to recurrence scores (RS). A cut off RS > 30 was used to offer adjuvant chemotherapy.ResultsThe 69 patients were identified, of which 9 (13%) had an RS > 30 and assigned a high‐genomic risk of recurrence. The 32 patients (46.4%) were offered adjuvant chemotherapy. Overall based on the use of the RS, the decision to offer adjuvant chemotherapy changed in 36% of patients, and ultimately 24 patients (34.7%) would have been spared chemotherapy.ConclusionUsing clinicopathological data alone to make decisions regarding adjuvant chemotherapy in node positive breast cancer leads to overtreatment. Additional information on tumour biology as assessed by the Oncotype DX RS helps to select those patients who will benefit from adjuvant chemotherapy and spare patients from unnecessary chemotherapy.
Parallel network simplex algorithm for the minimum cost flow problem
Authors: Kara Gökçehan , Özturan Can 
Published: October 2021

AbstractIn this work, we contribute a parallel implementation of the network simplex algorithm that is used for the solution of minimum cost flow problem. In the network simplex algorithm, finding an entering arc requires searching through many arcs to decide which one should be included in the spanning tree solution on the next iteration. We propose finding the entering arc in parallel as it often takes the majority of the execution time. A usual strategy is to pick the arc violating the optimality the most out of all possible candidates. Scanning all arcs can take quite some time, so it is common to consider only a fixed number of arcs which is referred as the block search pivoting rule. Arc scans can easily be done in parallel to find the best candidate as the calculations are independent of each other. We used shared memory parallelism using OpenMP along with vectorization using AVX instructions. We also tried adjusting block sizes to increase the parallel portion of the algorithm. Our dataset consists of various natural and synthetic graphs with sizes up to a billion arc. Our experiments show speedups up to four are possible, though they are typically lower.
Songs and singing songs in early childhood education: A review of Spanish curriculum policy
Authors: Casal de la Fuente Lucía , Gillanders Carol 
Published: October 2021

AbstractThis paper aims to explore Spanish curriculum policy related to song in early childhood education. By means of a document analysis, the different state governments' guidelines were reviewed. Song and singing songs are included in the official documents as curriculum content, as a pedagogical tool to approach curriculum content, and as an activity that helps promote personal and social development. In the first case, song is associated with the interpretative, aesthetic or artistic values to be enhanced in the early childhood; in the second case, singing songs is identified as a means to approach foreign language learning and as a way to gain a better understanding of culture; and lastly, as an activity that can help strengthen group cohesion, interpersonal relationships and the sense of belonging to a community. The present study findings suggest that song is taken into account as a valuable educational means in early childhood curriculum. Further study is needed to analyse how singing is approached in teacher education and how it is integrated into teachers' daily practices.
Teachers' sources of information about climate change: A scoping review
Authors: Puttick Steven , Talks Isobel 
Published: October 2021

AbstractThis paper sheds light on an important and under‐researched issue: The sources of information about climate change that teachers use. Utilising a ‘scoping review’ methodological approach, we analysed over 600 papers to address two main questions: What sources of information about climate change are teachers using? In what ways are teachers using these sources of information? Through our use of inclusive search terms and detailed analysis of papers, we found only 13 studies of relevance, none of which primarily focus on the sources of information teachers use. The 13 studies are all located in the Global North, and within this nearly half are in the USA. Methodologically, all apart from two rely on teachers' reports rather than observation or other methods. Four types of sources of information were frequently mentioned: The Internet; government sources; mass media and professional development courses. The ‘superabundance’ of information now available to teachers (particularly online), the importance of high‐quality information for students' understandings of climate change, and the limited research on the sources of information about climate change that teachers use makes this is a significant blind spot for research to address.
Micronutrient imbalance and common phenotypes in neural tube defects
Authors: Kakebeen Anneke Dixie , Niswander Lee 
Published: October 2021

SummaryNeural tube defects (NTDs) are among the most common birth defects, with a prevalence of close to 19 per 10,000 births worldwide. The etiology of NTDs is complex involving the interplay of genetic and environmental factors. Since nutrient deficiency is a risk factor and dietary changes are the major preventative measure to reduce the risk of NTDs, a more detailed understanding of how common micronutrient imbalances contribute to NTDs is crucial. While folic acid has been the most discussed environmental factor due to the success that population‐wide fortification has had on prevention of NTDs, folic acid supplementation does not prevent all NTDs. The imbalance of several other micronutrients has been implicated as risks for NTDs by epidemiological studies and in vivo studies in animal models. In this review, we highlight recent literature deciphering the multifactorial mechanisms underlying NTDs with an emphasis on mouse and human data. Specifically, we focus on advances in our understanding of how too much or too little retinoic acid, zinc, and iron alter gene expression and cellular processes contributing to the pathobiology of NTDs. Synthesis of the discussed literature reveals common cellular phenotypes found in embryos with NTDs resulting from several micronutrient imbalances. The goal is to combine knowledge of these common cellular phenotypes with mechanisms underlying micronutrient imbalances to provide insights into possible new targets for preventative measures against NTDs.
Patterning of vertebrate cardiac progenitor fields by retinoic acid signaling
Authors: Duong Tiffany B. , Waxman Joshua S. 
Published: October 2021

SummaryThe influence of retinoic acid (RA) signaling on vertebrate development has a well‐studied history. Cumulatively, we now understand that RA signaling has a conserved requirement early in development restricting cardiac progenitors within the anterior lateral plate mesoderm of vertebrate embryos. Moreover, genetic and pharmacological manipulations of RA signaling in vertebrate models have shown that proper heart development is achieved through the deployment of positive and negative feedback mechanisms, which maintain appropriate RA levels. In this brief review, we present a chronological overview of key work that has led to a current model of the critical role for early RA signaling in limiting the generation of cardiac progenitors within vertebrate embryos. Furthermore, we integrate the previous work in mice and our recent findings using zebrafish, which together show that RA signaling has remarkably conserved influences on the later‐differentiating progenitor populations at the arterial and venous poles. We discuss how recognizing the significant conservation of RA signaling on the differentiation of these progenitor populations offers new perspectives and may impact future work dedicated to examining vertebrate heart development.
Nature versus nurture: Structural equation modeling indicates that parental care does not mitigate consequences of poor environmental conditions in Eastern Bluebirds (Sialia sialis)
Authors: Sudnick Madeline , Brodie Bekka S. , Williams Kelly A. 
Published: October 2021

AbstractHow organisms respond to variation in environmental conditions and whether behavioral responses can mitigate negative consequences on growth, condition, and other fitness measures are critical to our ability to conserve populations in changing environments. Offspring development is affected by environmental conditions and parental care behavior. When adverse environmental conditions are present, parents may alter behaviors to mitigate the impacts of poor environmental conditions on offspring. We determined whether parental behavior (provisioning rates, attentiveness, and nest temperature) varied in relation to environmental conditions (e.g., food availability and ectoparasites) and whether parental behavior mitigated negative consequences of the environment on their offspring in Eastern Bluebirds (Sialia sialis). We found that offspring on territories with lower food availability had higher hematocrit, and when bird blow flies (Protocalliphora spp.) were present, growth rates were reduced. Parents increased provisioning and nest attendance in response to increased food availability but did not alter behavior in response to parasitism by blow flies. While parents altered behavior in response to resource availability, parents were unable to override the direct effects of negative environmental conditions on offspring growth and hematocrit. Our work highlights the importance of the environment on offspring development and suggests that parents may not be able to sufficiently alter behavior to ameliorate challenging environmental conditions.