bluuebunny/crossref_metadata_2025 huggingface dataset:
Toward an Ethics of Ambiguity in Critical Work and Organizational Psychology: From ‘Blank’ to ‘Troubled’ Subjectivity
Authors: Dashtipour Parisa , Gerard Nathan , Rolo Duarte
Published: July 2024

In recent years, a scholarly movement has taken hold that is critical of work and organizational psychology (WOP). Referred to as critical work and organizational psychology (CWOP), this movement problematizes some of the foundational premises of WOP, including its lack of reflexivity on its own values and ethics. While bringing increased attention to reflexivity and ethics as vital to critical theorizing and praxis, CWOP has yet to concertedly engage with ethics. This conceptual paper has two aims. The first is to outline existing ethical approaches in CWOP. Reviewing the literature, we suggest there are currently three tentative critical–ethical positions: (1) a critique of mainstream WOP for its ethical failures, (2) espousal of a radical humanist ethics, and (3) an ethics of ambiguity. The latter is embedded in CWOP literature, but not yet articulated as such. Our second aim is therefore to make an ethics of ambiguity a recognized and explicitly embraced form of ethics that is rooted in a sustained engagement with the conceptualization of subjectivity as such. To clarify the risks inherent to theorizing ethics without a sufficiently robust understanding of subjectivity, we juxtapose ‘blank subjectivity’ with ‘troubled subjectivity,’ two notions informed by psychoanalysis and psychosocial studies. We argue that a theory of subjectivity as troubled is at the heart of an ethics of ambiguity. The paper concludes by discussing the contribution of an ethics of ambiguity to CWOP, while also pointing to some convergences between the different critical–ethical positions.
Long-Term Stimulation of the Left Dorsal Branch of the Thoracic Nerve Improves Ventricular Electrical Remodeling in a Canine Model of Chronic Myocardial Infarction
Authors: Hua Juan , Xiong Ziyi , Kong Qiling , Wang Dandan , Liu Jinwei , Chen Huawei , Wang Yuerong , Wu Yan , Chen Qi , Xiong Liang
Published: July 2024

Purpose

To evaluate the ventricular electrophysiologic effects of long-term stimulation of the left dorsal branch of thoracic nerve (LDTN) derived from the left stellate ganglion (LSG) in a canine model of chronic myocardial infarction (MI).

Methods

Seventeen adult male beagles were randomly divided into three groups: the sham group (sham operated, n = 6), the MI group (n = 6), and the MI + LDTN group (MI plus LDTN stimulation, n = 5). The canine model of chronic MI was induced by the occlusion of the left anterior descending artery (LADO). The LDTN was separated and intermittently stimulated immediately after LADO for 2 months. The heart rate variability (HRV) analysis, in vivo electrophysiology, the evaluation of LSG function and neural activity, histological staining, and western blotting (WB) assay were performed to evaluate the effect of LDTN stimulation on the heart.

Results

The canine MI model was successfully established by LADO, and the LDTN was separated and stimulated immediately after LADO. The HRV analysis showed that LDTN stimulation reversed the increased LF value and LF/HF ratio of the MI group. LDTN stimulation prolonged the shortening ERP and APD90, decreased the dispersion of ERP and APD90, and increased the VFT. Additionally, LDTN stimulation inhibits the LSG function and neural activity. Furthermore, LDTN stimulation suppressed the activation of Wnt/β-catenin signaling, which contributed to the LSG neuronal apoptosis by upregulation of pro-apoptotic Bax and downregulation of anti-apoptotic Bcl-2.

Conclusion

LDTN stimulation could attenuate cardiac sympathetic remodeling and improve ventricular electrical remodeling, which may be mediated by suppressing the activated Wnt/β-catenin signaling pathway and then promoting the LSG neuronal apoptosis.
Methodological Overlap in Early Childhood Education Self-Regulation Research: An Interdisciplinary Systematic Review
Authors: Ross Robbie A. , Ascetta Kate E.
Published: July 2024

Young children’s self-regulation (SR) skills are linked to many important outcomes across the lifespan and school stakeholders widely agree that these skills should be prioritized in schools. Despite broad agreement about the importance of these skills, the diverse field of SR research is rife with a lack of clarity in both conceptual definitions and measurement with many different terms and definitions used interchangeably. With a systematic review of early childhood SR research in schools, we aimed to add to these efforts by cataloguing which SR variables researchers measure and the specific methodological choices made to capture such variables. Coders identified 319 peer-reviewed articles published between 2010–2020 that included a school-based measurement of self-regulation related constructs among children between 3- and 8-years. This revealed 11 distinct variable terms used widely in the literature to refer to SR related skills or characteristics and behavior problems was overwhelmingly the most frequent. Studies of many of these variables relied heavily on adult reports, usually teachers, and the use of multiple informants to measure variables was uncommon. Findings further highlight the conceptual clutter in SR research, point to possible points of empirical weaknesses in the measurement of these skills, and identify some methodological overlap in how variables are being operationalized in the literature.
Stimming as Thinking: a Critical Reevaluation of Self-Stimulatory Behavior as an Epistemic Resource for Inclusive Education
Authors: Tancredi Sofia , Abrahamson Dor
Published: July 2024

Peripheral sensorimotor stimming activity, such as rocking and fidgeting, is widely considered irrelevant to and even distracting from learning. In this critical-pedagogy conceptual paper, we argue that stimming is an intrinsic part of adaptive functioning, interaction, and cognitive dynamics. We submit that when cultural resources build from students’ own sensorimotor dynamics, rather than subjugating them to hegemonic corporeal norms, learners’ intrinsic sensorimotor behaviors may be embraced and empowered as mental activity. This call for transformative inclusive pedagogy is of particular importance for neurodivergent children whose sensorimotor engagements have historically been ostracized as disruptive. Following a conceptual analysis of stimming that builds on a range of neuro-cognitive empirical studies drawing on post-cognitivist embodied cognition theory, we imagine inclusive educational futures that disrupt sedentary instructional design to elevate minoritized learners’ sensorimotor activity. As proof of concept, we present an example inclusive embodied activity, balance board math, a pedagogical tool designed to elicit stimming as thinking. We propose a set of design heuristics for realizing stimming’s pedagogical potential.
Calling “Gevald”: on the emergence of negative election forecasts in partisan communications
Authors: Yechiam Eldad , Zeif Dana
Published: July 2024

Individuals were found to anonymously predict positive election outcomes for their preferred candidate. Yet, there is little scientific knowledge about election predictions made in the context of same-camp political communications (i.e., partisan communications) that are presumably meant to encourage other supporters. In five studies of low-information elections and a study of hypothetical U.S. elections (n = 1889), we found that people tended to communicate favorable forecasts to others sharing their view, compared to the neutral point and to the actual election outcomes. On the other hand, negative framing reduced the positivity of forecasts in these communications to the extent that it led most participants to predict an election loss. This occurred in response to a single addressee acting discordantly and even more strongly when the election results were phrased as a drop. When both positive and negative framing options were available, this still negativity affected participants’ predictions even though only a minority selected the negative framing option. Thus, people tend to make optimistic election predictions in partisan communications, but this pattern is easily manipulable given subtle changes in the forecasting prompt, either by negative framing or selectable positive and negative framing.
Stochastic Rock Slope Stability Analysis: Open Pit Case Study with Adjacent Block Caving
Authors: Nguyen Phu Minh Vuong , Marciniak Michał
Published: July 2024

In last decades, numerical modelling become a useful tool for solving complex geoengineering problems such as slope stability. On the other hand, probabilistic slope stability analyses are able to consider the variability of the rock mass properties in the decision making process. However, the application of probabilistic slope stability analysis with large three-dimensional numerical models is still limited due to the computational expenses of evaluating a substantial number of considered models. It is well-known that response surface methodology (RSM) couples the mathematical and statistical techniques to relate input variables to the response, allowing a reliable outcome and reasonable time of the analysis. Taking these advantages, this article presents an application of RSM in probabilistic slope stability analysis using three dimensional distinct element modelling. For this purpose, the most influencing factors including: uniaxial compressive strength, geological strength index (GSI), and shear strength of discontinuities, were taken into consideration to determine the probability of failure of an open pit slope located in vicinity of a block caving-induced subsidence crater. Numerical analysis of slope stability was conducted for an open pit slope using the Distinct Element Method code-3DEC. Probability distribution of the factor of safety (FS) was determined and possible slope failure mechanism was observed. In addition, the block caving-induced subsidence was investigated. The final outcomes indicate that Response Surface Methodology is applicable when couples with numerical modelling of complex issues, GSI is considered the most influential variable. The studied slope is considered stable due to the low value of the FS probability distribution (2.2%). This research is expected to provide a reference for slope stability analysis in case of transition from Open Pit to Underground Mining.
Pathways to master’s education: insights from students in transnational higher education in China
Authors: Lai Mei , Jung Jisun
Published: July 2024

Previous studies have identified the tendency among transnational higher education (TNHE) graduates to pursue master’s programmes, especially overseas degrees. Nonetheless, there is a lack of exploratory research on this ‘transnational’ group to understand the logic of practice behind this phenomenon. This article draws on interviews with 23 students at a Sino-US university to understand their perceptions of master’s study and explore the effect of TNHE experience on their decision-making about further study. Using Bourdieu’s theory of practice, we find students perceive pursuing master’s study as a natural progression and a remedy for failures in their educational backgrounds. This paper also argues that the ‘fit’ or ‘split’ between TNHE students’ habitus and the embedded field generates two distinct groups regarding choices of post-graduate study, international aspirants and returnees. While the acquisition of new habitus and capital through TNHE experiences steers most students towards international master’s study, the durability of old habitus and personal reflexivity lead a few to pursue domestic education. Our findings provide implications for TNHE administrators in supporting students’ post-graduate educational aspirations and further development of TNHE institutions in China.
Navigating between Promises and Realities of Transdisciplinary Research for Environmental Conservation
Authors: De La Rosa Gabriela , Milberg Muñiz Esther , El-Hani Charbel N. , Ludwig David
Published: July 2024

Transdisciplinary approaches combining technical perspectives with qualitative insights from the social sciences and non-academic stakeholders have emerged as a promising way to address the complexity of current socioenvironmental crises. However, transdisciplinary incorporation of diverse interests, knowledge, and worldviews requires acknowledging and addressing inherent inequities. Our case study combines two complementary transdisciplinary studies, the first conducted by a biologist/ecologist being trained in inter- and transdisciplinary methods at the time of the study, applying a quick participatory diagnosis in a fishing community, while the second is conducted by a social scientist studying the research group itself. Our results allow an exploration of the challenges and possibilities of navigating from transdisciplinary ideals to practical implementation. Our findings highlight the importance of nurturing relationships built on care, reciprocity, and openness to address the power imbalances inherent in university-community participatory practices. We suggest that the community’s autonomy and agency can be preserved while actively engaging its members in the transdisciplinary process, alleviating power differences and fostering a collaborative and equitable transdisciplinary framework. Overall, we emphasize the significance of integrating participatory methods, critical reflexivity, and attention to power dynamics in realizing the potential of transdisciplinary approaches for addressing complex conservation challenges and fostering meaningful community engagement.
Design of multi-modal feedback channel of human–robot cognitive interface for teleoperation in manufacturing
Authors: Zheng Chen , Wang Kangning , Gao Shiqi , Yu Yang , Wang Zhanxi , Tang Yunlong
Published: July 2024

Teleoperation, which is a specific mode of human–robot collaboration enabling a human operator to provide instructions and monitor the actions of the robot remotely, has proved beneficial for application to hazardous and unstructured manufacturing environments. Despite the design of a command channel from human operators to robots, most existing studies on teleoperation fail to focus on the design of the feedback channel from the robot to the human operator, which plays a crucial role in reducing the cognitive load, particularly in precise and concentrated manufacturing tasks. This paper focuses on designing a feedback channel for the cognitive interface between a human operator and a robot considering human cognition. Current studies on human–robot cognitive interfaces in robot teleoperation are extensively surveyed. Further, the modalities of human cognition that foster understanding and transparency during teleoperation are identified. In addition, the human–robot cognitive interface, which utilizes the proposed multi-modal feedback channel, is developed on a teleoperated robotic grasping system as a case study. Finally, a series of experiments based on different modal feedback channels are conducted to demonstrate the effectiveness of enhancing the performance of the teleoperated grasping of fragile products and reducing the cognitive load via the objective aspects of experimental results and the subjective aspects of operator feedback.
Depth-Enhanced Deep Learning Approach For Monocular Camera Based 3D Object Detection
Authors: Wang Chuyao , Aouf Nabil
Published: July 2024

Automatic 3D object detection using monocular cameras presents significant challenges in the context of autonomous driving. Precise labeling of 3D object scales requires accurate spatial information, which is difficult to obtain from a single image due to the inherent lack of depth information in monocular images, compared to LiDAR data. In this paper, we propose a novel approach to address this issue by enhancing deep neural networks with depth information for monocular 3D object detection. The proposed method comprises three key components: 1)Feature Enhancement Pyramid Module: We extend the conventional Feature Pyramid Networks (FPN) by introducing a feature enhancement pyramid network. This module fuses feature maps from the original pyramid and captures contextual correlations across multiple scales. To increase the connectivity between low-level and high-level features, additional pathways are incorporated. 2)Auxiliary Dense Depth Estimator: We introduce an auxiliary dense depth estimator that generates dense depth maps to enhance the spatial perception capabilities of the deep network model without adding computational burden. 3)Augmented Center Depth Regression: To aid center depth estimation, we employ additional bounding box vertex depth regression based on geometry. Our experimental results demonstrate the superiority of the proposed technique over existing competitive methods reported in the literature. The approach showcases remarkable performance improvements in monocular 3D object detection, making it a promising solution for autonomous driving applications.
Biopolymeric Composite Columns for Improving Water Quality in a Freshwater Stream Receiving Wastewater Treatment Plant Effluents
Authors: Akpınar Şahin , Gurbuz Fatma , Özcan Samet , Odabaşı Mehmet
Published: July 2024

Inefficiently treated wastewater, which contains a high concentration of pollutants, is hazardous when it is mixed with the clean water of rivers and lakes. Nitrate in particular is a major global problem that leads to eutrophication and poses a threat to both aquatic ecosystems and human health. To address this issue, this work assessed the efficiency of polymeric cryogel (PC) and biopolymer (EPS)-blended composites (EPS@PC) in removing nitrates. Tests were also conducted to quantify the decrease in phosphate, chloride ions, and chemical oxygen demand (COD) in real water samples taken from the Ankara stream, which receives effluents from both urban (UWTP) and industrial (IWTP) wastewater treatment plants. Five different columns with varying adsorptive properties were prepared, some of which were combined with iron. The EPS-@PC-C5 column demonstrated the highest adsorption ratio for nitrate removal compared to the other tested columns. The EPS@PC-C5 achieved a high removal efficiency of 126.38 mg nitrate/g and showed COD reduction ranging from 60.2 to 94.1%. The removal ratio of chloride concentration varied between 56.0 and 75.7%, while the removal of phosphates ranged from 87 to 99%. Columns composed of EPS (EPS@PC) with both negatively and positively charged ligands are dependable and suitable options for water remediation.

Graphical Abstract
Examples of cosmological spacetimes without CMC Cauchy surfaces
Authors: Ling Eric , Ohanyan Argam
Published: July 2024

CMC (constant mean curvature) Cauchy surfaces play an important role in mathematical relativity as finding solutions to the vacuum Einstein constraint equations is made much simpler by assuming CMC initial data. However, Bartnik (Commun Math Phys 117(4):615–624, 1988) constructed a cosmological spacetime without a CMC Cauchy surface whose spatial topology is the connected sum of two three-dimensional tori. Similarly, Chruściel et al. (Commun Math Phys 257(1):29–42, 2005) constructed a vacuum cosmological spacetime without CMC Cauchy surfaces whose spatial topology is also the connected sum of two tori. In this article, we enlarge the known number of spatial topologies for cosmological spacetimes without CMC Cauchy surfaces by generalizing Bartnik’s construction. Specifically, we show that there are cosmological spacetimes without CMC Cauchy surfaces whose spatial topologies are the connected sum of any compact Euclidean or hyperbolic three-manifold with any another compact Euclidean or hyperbolic three-manifold. Analogous examples in higher spacetime dimensions are also possible. We work with the Tolman–Bondi class of metrics and prove gluing results for variable marginal conditions, which allows for smooth gluing of Schwarzschild to FLRW models.
Climate change impact on Mediterranean viticultural regions and site-specific climate risk-reduction strategies
Authors: Prada João , Dinis Lia-Tânia , Soriato Elia , Vandelle Elodie , Soletkin Oğuzhan , Uysal Şener , Dihazi Abdelhi , Santos Conceição , Santos João A.
Published: July 2024

The global increase in extreme weather and climate events may dramatically impact agriculture, food safety, and socioeconomic dynamics. The Mediterranean basin is already exposed to extreme climatic events, severely challenging viticulture, a pivotal Mediterranean agro–industry. This study aims to understand better how climate is expected to evolve in six viticulturally important Mediterranean regions in Portugal, Italy, Turkey and Morocco, using a 4–member ensemble of climatic model projections under Representative Concentration Pathways (RCP) 4.5 and 8.5 for 2041–2070, and using the 1981–2010 period as a baseline. By comparing the main specific challenges these locations will face, we comparatively define the best strategies to reduce the impacts of climate change at the national and regional levels. Projections show increases in overall temperatures, up to + 3.6°C than the historical baseline, whilst precipitation projections indicate decreases that could reach 36% of the overall annual precipitation. Biological effective degree days, consecutive dry days, growing season length, tropical nights, or very heavy precipitation days, also show challenging prospects for viticulture in these countries. A screening of the adaptative strategies already undertaken in the studied countries suggests that growers are taking reactive rather than preventive strategies. Moreover, the discussion of the most suitable strategies in this study is region–specific, i.e., prioritised by the specific needs of each location. The conclusions drawn herein may support local growers, improving their decision–making based on the most adequate adaptive strategies to their conditions, thus optimising their sustainable production under changing climates.
University student flood risk perceptions and flood probability knowledge in Greater Sydney
Authors: Lin Shen , Opdyke Aaron
Published: July 2024

While flood risk perception has been studied extensively in general populations, there remains a dearth of focus on youth perspectives – a key demographic to mobilising knowledge to achieve disaster risk reduction targets. This study aimed to evaluate university students’ perceptions of flood risk and their understanding of common flood probabilities in the Greater Sydney region of Australia. We surveyed 262 university students to better understand how flood preparedness, knowledge, and experience predict flood risk perceptions. Using ordinal logistic regression, we identified that students with past flood experience and women were more likely to have higher flood risk perceptions. In contrast, students with higher flood preparedness were more likely to have lower flood risk perceptions. Age, degree level (e.g. bachelor’s, master’s), place of residence, and flood knowledge were inconclusive predictors of risk perception. We also assessed differences in how students rated the likelihood of three equivalent flood probabilities presented in different ways: (1) a 1-in-100 year flood; (2) a flood with a 1% of happening in a given year; and (3) a flood with a 55% chance in an 80-year lifetime. Using Friedman and Kruskal-Wallis tests, we compared differences within student responses and across different risk perception groups. We found that students perceived equivalent flood probabilities stated over longer periods of time to be more likely to occur. This study contributes to understanding student perceptions of flood risk, presenting recommendations on how governments and higher educational institutions can improve building students’ knowledge of flood hazards.
Digitalisierung von HR – Utopie oder Dystopie?
Authors: Stulle Klaus P.
Published: July 2024

Die Digitalisierung schreitet insbesondere auch im Bereich der HR Software unaufhaltsam voran, verbunden mit einer signifikanten Konsolidierung der Anbieterlandschaft samt ihren „Cloud“-Lösungen. Damit einher geht eine Reihe von Errungenschaften wie die zunehmende Transparenz des Arbeitsmarktes mit mehr Chancengleichheit sowie Gehaltsfairness („Equal Pay“) bis hin zu wünschenswerten Kostenersparnissen. Gleichzeitig sollen aber auch die Risiken nicht übersehen werden, die zum einen als „Gläserner Mitarbeiter“ zusammengefasst werden können. Zum anderen droht an verschiedenen Stellen eine gewisse Ernüchterung, dass sich die vorgesehenen Errungenschaften auf absehbare Zeit doch nicht in gewünschtem Ausmaß realisieren lassen. Das Gesamtbild der Zukunft dürfte dann von einer bunten Mischung von Utopie und Dystopie(-n) geprägt sein.
Epilogue: ‘Claiming Time’ Special Issue
Authors: Griffiths Melanie
Published: July 2024

This paper offers an epilogue to a special edition of articles employing a temporal lens to examine the politics of European asylum and reception systems. From camps to courts to casework, the papers explore a range of temporal matters arising in relation to attempts to manage human mobility. In this epilogue, I identify three temporal themes that arise across the different papers and that are dominant in contemporary Euro-American migration governance. These are: 1) the tempos (the strategic, often contradictory, employment of fast and slow speeds); 2) synchronicity (the multiplicity of times in European migration systems, and the alienation caused by disharmony); and 3) the tenses (from thwarted and inaccessible individual futures, to political representations of the past and future, and the enduring reverberations of past events). The prologue goes on to argue the importance of avoiding allochronism and identifies ways the authors avoid temporally ‘othering’ people, including by recognising people’s autonomy in acts of timing and in reclaiming and recalibrating their own timelines and rhythms. The paper ends with a call for the migration sector to ‘widen our gaze’ and to draw out the underlying colonial and capitalist temporalities so as to situate migration governance in broader temporal bordering and dispossession. After all, themes of limbo, impermanence, insecurity, temporal poverty, negated futures, temporal dissonance, and other temporal governance mechanisms that hierarchise, marginalise and discipline us, are increasingly evident across the globe, whether or not we cross a border.
Examining 21st century skills in BYOD schools: From programs to practice
Authors: Schmitz Maria-Luisa , Consoli Tessa , Antonietti Chiara , Cattaneo Alberto , Gonon Philipp , Petko Dominik
Published: July 2024

Bring-your-own-device (BYOD) is a common strategy to increase technology integration in schools and give learners more responsibility in using digital devices for educational purposes. In particular, learners are expected to develop domain-general 21st-century skills when using their personal devices. Although there is no consensus regarding a comprehensive framework of 21st-century skills, most conceptual models incorporate aspects such as collaboration, communication, creativity, and critical thinking—so-called 4C competences—as well as self-direction and the use of digital technologies for learning, among other aspects. The importance of these competencies has been stressed in general and vocational education. To study the relationship between BYOD approaches and self-reported 21st-century skills, we conducted a survey of N = 8265 upper-secondary students from 100 schools in Switzerland. Using multilevel linear modeling, we compared the self-reported 21st-century skills of students with or without personal digital devices for learning in general and vocational education tracks. Our results indicate that learners reported higher levels of 21st-century skills by indicating that they brought their own devices to school, especially with regard to creativity, self-direction, and the use of technology for learning. However, an official BYOD program was no significant predictor of students’ self-reported skills. The interactions between an official BYOD program and actual BYOD practice in class were not significant. Further, self-reported levels of 21st-century skills seemed to be higher in general than in vocational education. The study indicates that a BYOD concept alone does correspond to students’ 21st-century skills but actual BYOD practices do.
More than Steepness: Introducing Slope Quantitatively with Interactive Dynamic Representations
Authors: Wynn Lynda , Zahner William , Walker Carren
Published: July 2024

We report on a long-term collaboration with ninth-grade mathematics teachers at a linguistically diverse high school in which we examined the intersection between mathematics and language, and how language and mathematical thinking can be developed together in a multilingual setting. We co-designed lessons that promoted conceptual understanding, increased students’ access to grade level mathematics and created opportunities for students who are classified as English learners to participate in discussions. Our content focus was linear and exponential rates of change. In this article, we focus on linear rate of change and its connection to slope. After identifying three distinct meanings for and uses of slope in a ninth-grade mathematics textbook: (a) slope as steepness, (b) slope as rate of change, and (c) slope as a property of collinearity (presented in this order) and observing student interactions around slope concepts, we considered whether it may be more beneficial for students, particularly emergent multilingual students, to develop a robust quantitative understanding of slope first, then introduce the other two meanings of slope as an application of rate of change. To achieve this, we created a series of lessons incorporating dynamic interactive technology and mathematical language routines. We share three of these lessons in this article and include a classroom vignette illustrating the classroom interactions that were achieved through using our first Desmos activity.
A new bound for the orthogonality defect of HKZ reduced lattices
Authors: Porter Christian , Dable-Heath Edmund , Ling Cong
Published: July 2024

Hermite–Korkin–Zolotarev (HKZ) reduction is an important notion of lattice reduction which plays a significant role in number theory (particularly the geometry of numbers), and more recently in coding theory and post-quantum cryptography. In this work, we determine a sharp upper bound on the orthogonality defect of HKZ reduced bases up to dimension 3. Using this result, we determine a general upper bound for the orthogonality defect of HKZ reduced bases of arbitrary rank. This upper bound is sharper than existing bounds in literature, such as the one determined by Lagarias, Lenstra and Schnorr [3].
Extract Implicit Semantic Friends and Their Influences from Bipartite Network for Social Recommendation
Authors: Zhang Zhigao , Song Fanfei , Wang Bin , Dong Chuansheng
Published: July 2024

Social recommendation often incorporates trusted social links with user-item interactions to enhance rating prediction. Although methods that aggregate explicit social links have shown promising prospects, they are often constrained by the absence of explicit social data and the assumption of homogeneity, thus overlooking variations in social influence and consistency. These limitations hinder semantic expression and recommendation performance. Therefore, we propose a novel framework for social recommendation. First, we design a bipartite network embedding scheme, which learns vertex representations in the embedding space by modeling 1st-order explicit relations and higher-order implicit relations between vertices. Then, the similarity of the embedding vectors is used to extract top-k semantically consistent friends for each user. Next, we design an algorithm to assign a specific influence value to each user. Finally, we combine the top-k friends of the user and their influence values into an ensemble and add it as a regularization term to the rating prediction process of the user to correct the bias. Experiments on three real benchmark datasets show significant improvements in EISF over state-of-the-art methods.
Between aid and rights: Humanitarian international NGOs responding to the crisis of European refugee protection
Authors: Dany Charlotte
Published: July 2024

The ongoing crisis of refugee protection in Europe exemplifies a tension between providing humanitarian aid and fighting for human rights. Some recent studies have been highly critical of humanitarian action in this context, suggesting that giving aid to refugees in Europe is a substitute for and suppression of human rights work (Dittmer and Lorenz 2021a; Cuttitta 2018; Ticktin 2016). However, humanitarian aid comprises both, humanitarianism and human rights. This study investigates how humanitarian international non-governmental organisations (INGOs) have striven to protect refugees from North Africa, the Middle East and Ukraine from 2015 to 2023. During this time, many have established new programs in Europe. A content analysis of documents by four humanitarian INGOs shows how they work to integrate both, aid and rights, in their refugee work. This creates certain tensions. For example, the analysis suggests that localisation is one way to integrate human rights into humanitarian action, however at the risk of compromising humanitarian principles.
The contribution of the University of São Paulo to the scientific production on climate change: a bibliometric analysis
Authors: Diniz Oliveira Thais , dos Santos Tailine Corrêa , Weiler Jéssica , de Oliveira e Aguiar Alexandre , Fernandes Carolina Cristina , Ziglio Luciana
Published: July 2024

This paper evaluates how the contribution of scientific publications on climate change from the University of São Paulo (USP) evolved between 1989 and 2022. The study conducted a bibliometric analysis of 2874 research articles collected from the Web of Science and Scopus databases to explore main trend topics and reveal influential journals and collaboration networks using the Bibliometrix software. The study shows an increasing and more significant temporal publication distribution from 2010 onwards. Based on the author’s affiliations, results indicate that the most important partnerships are national (67%), while the international co-authorships are predominantly with research collaborators of the Global North (North America and Europe). Several papers published in the period are in high-impact factor journals, evidence on climate change from USP. Environmental services, Atlantic Forest, Tropical Forest, Amazon, biodiversity, and Land use are the hotspot research topics to which USP researchers contribute. The evolution of three thematic groups was identified: (i) physical science, (ii) causes and effects, and (iii) strategies, discussed in themes such as organic matter, deforestation, and mitigation, respectively. This research is helpful to get insights into the current research development trends, to show the broadness of the scientific production, and the importance of the USP role in the climate change theme. Ultimately, it provides valuable information for further studies and suggests the possibility of advancing the research agenda on climate change with the Global South.

Graphical Abstract
The role of exposure to nature in perceived stress by veterinary students
Authors: Cruz-Martinez Luis , Hervé-Claude Luis Pablo , Gallagher Chista Ann , Dzikiti Loveness , Little William Brady
Published: July 2024

Veterinary school is intense and represents a challenging time for students, and increasingly, veterinary students are being diagnosed with a variety of concerning mental health issues including stress, anxiety, and depression, often resulting in poor academic performance. Because of the disproportionately high risk of mental health problems in the veterinary field, it is important that students learn, understand, and utilize simple and effective techniques to cope with stress, and demands of the profession. Spending time in natural environments such as outdoor parks, green spaces, and urban forests is an effective strategy for improving mental health. In this study, we examined the self-reported effects of repeated, structured time in a nature-based intervention, vs a control group of veterinary students. Participants reported significantly lower perceived stress levels compared to a control group. Students overwhelmingly reported that they would recommend this stress reduction technique to their classmates, and they stated that they planned to continue spending time in nature to improve their mindset and reduce stress in the future.
The Cosmic Microwave Background
Authors: Perovic Slobodan , Cirkovic Milan M.
Published: July 2024

This volume tells the untold story of how observations of the cosmic microwave background radiation were interpreted in the decades following its serendipitous discovery, before the Hot Big Bang model became the accepted orthodoxy. The authors guide the reader through this history, including the many false trails and blind alleys that occurred along the way. Readers will discover how the Big Bang theory was shaped by alternative theories that exposed its weaknesses – including some that persist even today. By looking carefully at what it takes to reject an incorrect theory and the assumptions and processes at each stage, the authors examine the epistemological factors at play between an emerging scientific orthodoxy and since discarded alternatives. Their analysis of the cosmic microwave background provides a uniquely well-documented case study of theory building for a wide readership spanning cosmology, the history of physics and astronomy, and the philosophy of science more broadly.
I Play Online Games Because I Believe in a Just Virtual World
Authors: Ko Dongwoo , Park Jihye
Published: July 2024

Abstract: Understanding the impact of societal perceptions on online gaming is crucial, given the online gaming industry’s remarkable growth and the blurring lines between online and offline market environments. This study aims to explore how perceptions of inequality in the world, viewed through the lens of belief in a just world, affect game consumption and to understand the mediating effect of mindset. The results of two experiments provide adequate evidence that as people’s belief in the existence of a fair world decreases, their inclination to play online games increases. Additionally, this trend intensifies when gamers possess a growth mindset, and life satisfaction shows a moderated mediating effect on the relationship. The results of this study will offer valuable insights to understand the connection between the online and offline worlds.
Controls on Stable Methane Isotope Values in Northern Peatlands and Potential Shifts in Values Under Permafrost Thaw Scenarios
Authors: Kuhn McKenzie A. , Varner Ruth K. , McCalley Carmody K. , Perryman Clarice R. , Aurela Mika , Burke Sophia A. , Chanton Jeffrey P. , Crill Patrick M. , DelGreco Jessica , Deng Jia , Heffernan Liam , Herrick Christina , Hodgkins Suzanne B. , Jones Cheristy P. , Juutinen Sari , Kane Evan S. , Lamit Louis J. , Larmola Tuula , Lilleskov Erik , Olefeldt David , Palace Michael W. , Rich Virginia I. , Schulze Christopher , Shorter Joanne H. , Sullivan Franklin B. , Sonnentag Oliver , Turetsky Merritt R. , Waldrop Mark P.
Published: July 2024

Northern peatlands are a globally significant source of methane (CH4), and emissions are projected to increase due to warming and permafrost loss. Understanding the microbial mechanisms behind patterns in CH4 production in peatlands will be key to predicting annual emissions changes, with stable carbon isotopes (δ13C‐CH4) being a powerful tool for characterizing these drivers. Given that δ13C‐CH4 is used in top‐down atmospheric inversion models to partition sources, our ability to model CH4 production pathways and associated δ13C‐CH4 values is critical. We sought to characterize the role of environmental conditions, including hydrologic and vegetation patterns associated with permafrost thaw, on δ13C‐CH4 values from high‐latitude peatlands. We measured porewater and emitted CH4 stable isotopes, pH, and vegetation composition from five boreal‐Arctic peatlands. Porewater δ13C‐CH4 was strongly associated with peatland type, with δ13C enriched values obtained from more minerotrophic fens (−61.2 ± 9.1‰) compared to permafrost‐free bogs (−74.1 ± 9.4‰) and raised permafrost bogs (−81.6 ± 11.5‰). Variation in porewater δ13C‐CH4 was best explained by sedge cover, CH4 concentration, and the interactive effect of peatland type and pH (r2 = 0.50, p < 0.001). Emitted δ13C‐CH4 varied greatly but was positively correlated with porewater δ13C‐CH4. We calculated a mixed atmospheric δ13C‐CH4 value for northern peatlands of −65.3 ± 7‰ and show that this value is more sensitive to landscape drying than wetting under permafrost thaw scenarios. Our results suggest northern peatland δ13C‐CH4 values are likely to shift in the future which has important implications for source partitioning in atmospheric inversion models.
Plume‐Driven Subduction Termination in 3‐D Mantle Convection Models
Authors: Heilman Erin , Becker Thorsten W.
Published: July 2024

The effect of mantle plumes is secondary to that of subducting slabs for modern plate tectonics when considering plate driving forces. However, the impact of plumes on tectonics and planetary surface evolution may nonetheless have been significant. We use numerical mantle convection models in a 3‐D spherical chunk geometry with damage rheology to study some of the dynamics of plume‐slab interactions. Substantiating our earlier 2‐D results, we observe a range of interaction scenarios, and that the plume‐driven subduction terminations we had identified earlier persist in more realistic convective flow. We analyze the dynamics of plume affected subduction, including in terms of their geometry, frequency, and the overall effect of plumes on surface dynamics as a function of the fraction of internal to bottom heating. Some versions of such plume‐slab interplay may be relevant for geologic events, for example, for the inferred ∼183 Ma Karoo large igneous province formation and associated slab disruption. More recent examples may include the impingement of the Afar plume underneath Africa leading to disruption of the Hellenic slab, and the current complex structure imaged for the subduction of the Nazca plate under South America. Our results imply that plumes may play a significant role not just in kick‐starting plate tectonics, but also in major modifications of slab‐driven plate motions, including for the present‐day mantle.
IDH1-mutant metabolite D-2-hydroxyglutarate inhibits proliferation and sensitizes glioma to temozolomide via down-regulating ITGB4/PI3K/AKT
Authors: Tong Shuangmei , Wu Jian , Song Yun , Fu Wenhuan , Yuan Yifan , Zhong Pin , Liu Yinlong , Wang Bin
Published: July 2024

The heterogeneous molecular subtypes of gliomas demonstrate varied responses to chemotherapy and distinct prognostic outcomes. Gliomas with Isocitrate dehydrogenase 1 (IDH1) mutation are associated with better outcomes and are more responsive to temozolomide (TMZ) compared to those without IDH1 mutation. IDH1-mutant gliomas elevate D-2-hydroxyglutarate (D-2HG) levels, with potential dual effects on tumor progression. Limited research has explored the potential anti-glioma effects of D-2HG in combination with TMZ. Clinical data from over 2500 glioma patients in our study confirms that those with IDH1 mutations exhibit enhanced responsiveness to TMZ chemotherapy and a significantly better prognosis compared to IDH1 wild-type patients. In subsequent cellular experiments, we found that the IDH1-mutant metabolite D-2HG suppresses Integrin subunit beta 4 (ITGB4) expression, and down-regulate the phosphorylation levels of PI3K and AKT, ultimately inhibiting cell proliferation while promoting apoptosis, thereby improving glioma prognosis. Additionally, we have demonstrated the synergistic effect of D-2HG and TMZ in anti-glioma therapy involved inhibiting the proliferation of glioma cells and promoting apoptosis. Finally, by integrating data from the CGGA and TCGA databases, it was validated that ITGB4 expression was lower in IDH1-mutant gliomas, and patients with lower ITGB4 expression were associated with better prognosis. These findings indicate that ITGB4 may be a promising therapeutic target for gliomas and D-2HG inhibits proliferation and sensitizes glioma to temozolomide via down-regulating ITGB4/PI3K/AKT. These findings drive theoretical innovation and research progress in glioma therapy.
Flexible multitask computation in recurrent networks utilizes shared dynamical motifs
Authors: Driscoll Laura N. , Shenoy Krishna , Sussillo David
Published: July 2024

Flexible computation is a hallmark of intelligent behavior. However, little is known about how neural networks contextually reconfigure for different computations. In the present work, we identified an algorithmic neural substrate for modular computation through the study of multitasking artificial recurrent neural networks. Dynamical systems analyses revealed learned computational strategies mirroring the modular subtask structure of the training task set. Dynamical motifs, which are recurring patterns of neural activity that implement specific computations through dynamics, such as attractors, decision boundaries and rotations, were reused across tasks. For example, tasks requiring memory of a continuous circular variable repurposed the same ring attractor. We showed that dynamical motifs were implemented by clusters of units when the unit activation function was restricted to be positive. Cluster lesions caused modular performance deficits. Motifs were reconfigured for fast transfer learning after an initial phase of learning. This work establishes dynamical motifs as a fundamental unit of compositional computation, intermediate between neuron and network. As whole-brain studies simultaneously record activity from multiple specialized systems, the dynamical motif framework will guide questions about specialization and generalization.
Solution processed high aspect ratio ultra-long vertically well-aligned ZnO nano scintillators for potential X-ray imaging applications
Authors: Kurudirek Sinem V. , Kurudirek Murat , Erickson Anna , Hertel Nolan , Sellin Paul J. , Tratsiak Yauhen , Lawrie Benjamin J. , Melcher Charles L. , Summers Christopher J.
Published: July 2024

We report the photon (PL), electron (CL) and X-ray (XEL) induced luminescence characteristics of high aspect ratio ultra-long (~ 50 µm) ZnO nanorods (NRs) and discuss the potential for fast X-ray detection based on the consistent and efficient visible emission (~ 580 nm) from ZnO NRs. Nanostructured ZnO scintillators were rearranged to form a vertically well-aligned NR design in order to help light absorption and coupling resulting in luminescent and fast scintillation properties. The design of the nanorod array combines the key advantages of a low-cost growth technique together with environmentally friendly and widely available materials. A low temperature hydrothermal method was adopted to grow ZnO NRs in one cycle growth and their structural, optical and X-ray scintillation properties were investigated. The relatively short (~ 10 µm) ZnO NRs emitting in the near-band-edge region were found to be almost insensitive to X-rays. On the other hand, the higher XEL response of long ZnO NRs, which is a key parameter for evaluation of materials to be used as scintillators for high quality X-ray detection and imaging, along with a decay time response in the order of ns confirmed promising scintillation properties for fast and high-resolution X-ray detector applications.