bluuebunny/crossref_metadata_2025_split huggingface dataset:
On decompositions and approximations of conjugate partial-symmetric tensors
Authors: Fu Taoran , Jiang Bo , Li Zhening 
Published: October 2021

AbstractHermitian matrices have played an important role in matrix theory and complex quadratic optimization. The high-order generalization of Hermitian matrices, conjugate partial-symmetric (CPS) tensors, have shown growing interest recently in tensor theory and computation, particularly in application-driven complex polynomial optimization problems. In this paper, we study CPS tensors with a focus on ranks, computing rank-one decompositions and approximations, as well as their applications. We prove constructively that any CPS tensor can be decomposed into a sum of rank-one CPS tensors, which provides an explicit method to compute such rank-one decompositions. Three types of ranks for CPS tensors are defined and shown to be different in general. This leads to the invalidity of the conjugate version of Comon’s conjecture. We then study rank-one approximations and matricizations of CPS tensors. By carefully unfolding CPS tensors to Hermitian matrices, rank-one equivalence can be preserved. This enables us to develop new convex optimization models and algorithms to compute best rank-one approximations of CPS tensors. Numerical experiments from data sets in radar wave form design, elasticity tensor, and quantum entanglement are performed to justify the capability of our methods.
Symmetric power functoriality for holomorphic modular forms, II
Authors: Newton James , Thorne Jack A. 
Published: October 2021

AbstractLet $f$
f
be a cuspidal Hecke eigenform without complex multiplication. We prove the automorphy of the symmetric power lifting $\operatorname{Sym}^{n} f$

Sym
n

f
for every $n \geq 1$
n
≥
1
.
How do elementary school teachers learn coding and robotics? A case study of mediations and conflicts
Authors: Boz Tugba , Allexsaht-Snider Martha 
Published: October 2021

AbstractIn this qualitative case study, we examined in-service elementary school teachers’ learning of coding and robotics in a blended professional learning course developed and delivered through the collaboration between university faculty and a school district. We focused on activity theory to understand and reveal the mediations, conflicts, and effective practices that facilitated or hindered teachers’ learning of coding and robotics. The participants of the study were twelve teachers from five different elementary schools in a rural school district. Data collection and generation sources included interviews, videos of class meetings, course assignments, and artifacts. In analyzing the data, we employed analytical approaches under the guidance of activity theory. The findings showed that teacher collaboration, coding/robotics platforms employed during the professional learning course, instructional approaches, and resources in and outside the professional learning setting mediated or conflicted with the teachers’ learning of coding and robotics depending on the way that each of these elements was employed in the course. Elaborating on these elements, we reported the implications for further research and practice.
Shared Control of an Aerial Cooperative Transportation System with a Cable-suspended Payload
Authors: Masone Carlo , Stegagno Paolo 
Published: October 2021

AbstractThis paper presents a novel bilateral shared framework for a cooperative aerial transportation and manipulation system composed by a team of micro aerial vehicles with a cable-suspended payload. The human operator is in charge of steering the payload and he/she can also change online the desired shape of the formation of robots. At the same time, an obstacle avoidance algorithm is in charge of avoiding collisions with the static environment. The signals from the user and from the obstacle avoidance are blended together in the trajectory generation module, by means of a tracking controller and a filter called dynamic input boundary (DIB). The DIB filters out the directions of motions that would bring the system too close to singularities, according to a suitable metric. The loop with the user is finally closed with a force feedback that is informative of the mismatch between the operator’s commands and the trajectory of the payload. This feedback intuitively increases the user’s awareness of obstacles or configurations of the system that are close to singularities. The proposed framework is validated by means of realistic hardware-in-the-loop simulations with a person operating the system via a force-feedback haptic interface.
The Role of the Valence, Arousing Properties and Subjective Significance of Subliminally Presented Words in Affective Priming
Authors: Imbir Kamil , Pastwa Maciej , Walkowiak Magdalena 
Published: October 2021

AbstractIn the verbal affective priming paradigm, the properties of a subliminally presented stimulus alter the interpretation of neutral target stimulus. In the experiment reported here, we tested the role of four factors (valence, origin, arousing properties and subjective significance) that determine the emotional reactions to words in affective priming. Subliminal masked presentation of words preceded the explicit task, which was assessment of neutral Quick Response code (QR code) stimuli. The QRs were codes for words representing personality traits. The results showed the effect of assimilation (negative words caused a negative interpretation, positive caused a positive interpretation) for words’ emotional valence and no effects for origin. Concerning arousal, we found a weak negative trend. In the case of subjective significance, a moderate positive trend was found. These results suggest that affective priming effects are susceptible not only to the valence of priming stimuli but also to activation factors.
Left ventricular remodeling in rugby is a physiological adaptation to exercise: a pilot study conducted with high-level athletes
Authors: Rato Nuno Dias , Richards Joanna 
Published: October 2021

Abstract
Purpose
Literature examining left ventricular (LV) structural adaptations to combined strength and endurance training is inconsistent. Rugby is a sport that combines these two exercise modalities, both during training and match play. This study aimed to explore differences in LV structure between high-level rugby players and untrained controls. Body composition analysis was performed to determine the most appropriate indexing variable for LV mass (LVM) and understand if increases in LV represent either a training-related physiological adaptation or reflect the groups’ anthropometric differences.

Methods
A cross-sectional design compared 10 rugby players and 10 untrained age-matched, male controls. Body composition was obtained by bioelectrical impedance. M-mode echocardiographic imaging was performed on the LV from the parasternal long axis view.

Results
Significantly greater end-diastolic interventricular septum, LV internal diameter, posterior wall thickness, LVM and LVM/fat-free mass (FFM) (p < 0.05) were found in rugby players compared to age-matched controls. Moreover, Pearson’s correlation tests revealed FFM to be the body composition variable with the strongest correlation to LVM (r = 0.775, p < 0.001).

Conclusion
The differences in LV structure between groups suggest that the combined endurance and strength training that rugby athletes are subjected to, induce a process of concentric and eccentric enlargement of the LV structure. Furthermore, the association found with FFM, suggests it to be the most appropriate body scaling variable to index to LVM and, thus, should be considered when describing increases in LVM. The present research suggests that increased LVM in the athletes group represents true physiological adaptations to training.
Exploring trade-offs between SDGs for Indus River Dolphin conservation and human water security in the regulated Beas River, India
Authors: Momblanch Andrea , Kelkar Nachiket , Braulik Gill , Krishnaswamy Jagdish , Holman Ian P. 
Published: October 2021

AbstractIn India’s Indo-Gangetic plains, river flows are strongly altered by dams, barrages and water diversions for irrigation, urban supply, hydropower production and flood control. Human demands for freshwater are likely to intensify with climatic and socio-economic changes, exacerbating trade-offs between different sustainable development goals (SDGs) dependent on freshwater (e.g. SDG2, SDG6, SDG7, SDG11 and SDG15). Freshwater ecosystems and endangered aquatic species are not explicitly addressed in the SDGs, but only nested as targets within SDG6 and SDG15. Thus, there is high risk that decisions to advance other SDGs may overlook impacts on them. In this study, we link a water resource systems model and a forecast extinction risk model to analyze how alternative conservation strategies in the regulated Beas River (India) affect the likelihood of survival of the only remaining population of endangered Indus River Dolphins (IRD) in India in the face of climate change-induced impacts on river hydrology and human water demands, explicitly accounting for potential trade-offs between related SDGs. We find that the frequency of low flow released from the main reservoir may increase under some climate change scenarios, significantly affecting the IRD population. The strongest trade-offs exist between the persistence of IRD, urban water supply and hydropower generation. The establishment of ecologically informed reservoir releases combined with IRD population supplementation enhances the probability of survival of the IRD and is compatible with improving the status of relevant SDGs. This will require water managers, conservation scientists, and other stakeholders to continue collaborating to develop holistic water management strategies.
The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams
Authors: Yang Hongcheng , Zhang Shuren , Yang Hongyu , Wen Qingyu , Yang Qiu , Gui Ling , Zhao Qian , Li Enzhu 
Published: October 2021

AbstractThe explosive process of 5G communication evokes the urgent demand of miniaturized and integrated dielectric ceramics filter. It is a pressing need to advance the development of dielectric ceramics utilization of emerging technology to design new materials and understand the polarization mechanism. This review provides the summary of the study of microwave dielectric ceramics (MWDCs) sintered higher than 1000 from 2010 up to now, °C with the purpose of taking a broad and historical view of these ceramics and illustrating research directions. To date, researchers endeavor to explain the structure-property relationship of ceramics with multitude of approaches and design a new formula or strategy to obtain excellent microwave dielectric properties. There are variety of factors that impact the permittivity, dielectric loss, and temperature stability of dielectric materials, covering intrinsic and extrinsic factors. Many of these factors are often intertwined, which can complicate new dielectric material discovery and the mechanism investigation. Because of the various ceramics systems, pseudo phase diagram was used to classify the dielectric materials based on the composition. In this review, the ceramics were firstly divided into ternary systems, and then brief description of the experimental probes and complementary theoretical methods that have been used to discern the intrinsic polarization mechanisms and the origin of intrinsic loss was mentioned. Finally, some perspectives on the future outlook for high-temperature MWDCs were offered based on the synthesis method, characterization techniques, and significant theory developments.
Advanced Strategies to Improve Performances of Molybdenum-Based Gas Sensors
Authors: Hermawan Angga , Septiani Ni Luh Wulan , Taufik Ardiansyah , Yuliarto Brian , Suyatman  , Yin Shu 
Published: October 2021

AbstractMolybdenum-based materials have been intensively investigated for high-performance gas sensor applications. Particularly, molybdenum oxides and dichalcogenides nanostructures have been widely examined due to their tunable structural and physicochemical properties that meet sensor requirements. These materials have good durability, are naturally abundant, low cost, and have facile preparation, allowing scalable fabrication to fulfill the growing demand of susceptible sensor devices. Significant advances have been made in recent decades to design and fabricate various molybdenum oxides- and dichalcogenides-based sensing materials, though it is still challenging to achieve high performances. Therefore, many experimental and theoretical investigations have been devoted to exploring suitable approaches which can significantly enhance their gas sensing properties. This review comprehensively examines recent advanced strategies to improve the nanostructured molybdenum-based material performance for detecting harmful pollutants, dangerous gases, or even exhaled breath monitoring. The summary and future challenges to advance their gas sensing performances will also be presented.
3D Ultralight Hollow NiCo Compound@MXene Composites for Tunable and High-Efficient Microwave Absorption
Authors: Wang Hui-Ya , Sun Xiao-Bo , Yang Shu-Hao , Zhao Pei-Yan , Zhang Xiao-Juan , Wang Guang-Sheng , Huang Yi 
Published: October 2021

AbstractThe 3D hollow hierarchical architectures tend to be designed for inhibiting stack of MXene flakes to obtain satisfactory lightweight, high-efficient and broadband absorbers. Herein, the hollow NiCo compound@MXene networks were prepared by etching the ZIF 67 template and subsequently anchoring the Ti3C2Tx nanosheets through electrostatic self-assembly. The electromagnetic parameters and microwave absorption property can be distinctly or slightly regulated by adjusting the filler loading and decoration of Ti3C2Tx nanoflakes. Based on the synergistic effects of multi-components and special well-constructed structure, NiCo layered double hydroxides@Ti3C2Tx (LDHT-9) absorber remarkably achieves unexpected effective absorption bandwidth (EAB) of 6.72 GHz with a thickness of 2.10 mm, covering the entire Ku-band. After calcination, transition metal oxide@Ti3C2Tx (TMOT-21) absorber near the percolation threshold possesses minimum reflection loss (RLmin) value of − 67.22 dB at 1.70 mm within a filler loading of only 5 wt%. This work enlightens a simple strategy for constructing MXene-based composites to achieve high-efficient microwave absorbents with lightweight and tunable EAB."Image missing"
Sensitivity of the area method with mono isotopic fission chambers to reactivity changes in subcritical nuclear reactors
Authors: Janczyszyn Jerzy A. , Domańska Grażyna , Stanisz Przemysław 
Published: October 2021

AbstractHigh-level waste is an important safety issue in the development of nuclear power. A proposed solution is the transmutation of waste in fast reactors. The exclusion of the risk of supercriticality by using subcritical reactors is currently under development. Controlling the subcriticality level in such reactors presents difficulties. A problem is posed by the so-called space effect observed when using in reactors many neutron detectors in different locations of the core and reflector. Reactivity obtained from measurements, for example, by the Sjöstrand method, differs by nonnegligible values. Numerical corrections can partially improve this situation. The use of a monoisotopic fission chamber set, designed for a given reactor, when each chamber is intended for a specific position in the system, can improve the situation. A question arises about the sensitivity of the results to reactivity changes. This issue is analyzed by computer simulation for possible fissionable and fissile nuclides for the total range of control rod insertion, changes in reactor fuel enrichment, and fuel temperature. The tested sensitivity was satisfactory at most levels from several dozen to several hundred pcm. A case study was conducted using the VENUS-F core model.
The Compositional Nature of Tense, Mood and Aspect
Authors: Verkuyl Henk J. 
Published: October 2021

Bringing together fifty years' worth of cross-linguistic research, this pioneering monograph explores the complex interaction between tense, mood and aspect. It looks at the long way of combining elementary semantic units at the bottom of phrase structure up to and including the top of a sentence. Rejecting ternary tense as blocking compositionality, it introduces three levels obtained by binary tense oppositions. It also counters an outdated view on motion by assuming that change is not expressed as having an inherent goal but rather as dynamic interaction between different number systems that allows us to package information into countable and continuous units. It formally identifies the central role of a verb in a variety of argument structures and integrates adverbial modifiers into the compositional structure at different tense levels of phrase structure. This unique contribution to the field will be essential reading for advanced students and researchers in the syntax-semantics interface.
The Cost-Benefit Fallacy: Why Cost-Benefit Analysis Is Broken and How to Fix It
Authors: Flyvbjerg Bent , Bester Dirk W. 
Published: October 2021

AbstractMost cost-benefit analyses assume that the estimates of costs and benefits are more or less accurate and unbiased. But what if, in reality, estimates are highly inaccurate and biased? Then the assumption that cost-benefit analysis is a rational way to improve resource allocation would be a fallacy. Based on the largest dataset of its kind, we test the assumption that cost and benefit estimates of public investments are accurate and unbiased. We find this is not the case with overwhelming statistical significance. We document the extent of cost overruns, benefit shortfalls, and forecasting bias in public investments. We further assess whether such inaccuracies seriously distort effective resource allocation, which is found to be the case. We explain our findings in behavioral terms and explore their policy implications. Finally, we conclude that cost-benefit analysis of public investments stands in need of reform and we outline four steps to such reform.
Algorithms and the Individual in Criminal Law
Authors: Jorgensen Renée 
Published: October 2021

AbstractLaw-enforcement agencies are increasingly able to leverage crime statistics to make risk predictions for particular individuals, employing a form of inference that some condemn as violating the right to be “treated as an individual.” I suggest that the right encodes agents’ entitlement to a fair distribution of the burdens and benefits of the rule of law. Rather than precluding statistical prediction, it requires that citizens be able to anticipate which variables will be used as predictors and act intentionally to avoid them. Furthermore, it condemns reliance on various indexes of distributive injustice, or unchosen properties, as evidence of law-breaking.
Best Practice Injury Compensation Processes Following Intentional Vehicular Assaults and Other Large Scale Transport Incidents: A Delphi Review
Authors: Varker Tracey , McGregor Kari , Pedder David J. , Lethbridge Ros , Grant Genevieve , Knight Holly , Jones Kimberley A. , Jacobs Jurriaan , O’Donnell Meaghan 
Published: October 2021

Abstract

Objective:
Intentional vehicular assaults on civilians have become more frequent worldwide, with some resulting in mass casualties, injuries, and traumatized witnesses. Health care costs associated with these vehicular assaults usually fall to compensation agencies. There is, however, little guidance around how compensation agencies should respond to mental and physical injury claims arising from large-scale transport incidents.

Methods:
A Delphi review methodology was used to establish expert consensus recommendations on the major components of “no fault” injury claim processes for mental and physical injury.

Results:
Thirty-three international experts participated in a 3-round online survey to rate their agreement on key statements generated from the literature. Consensus was achieved for 45 of 60 (75%) statements, which were synthesized into 36 recommendations falling within the domains of (1) facilitating claims, (2) eligibility rules, (3) payments and benefits for clients, (4) claims management procedures, (5) making and explaining decisions, (6) support and information resources for clients, (7) managing scheme staff and organizational response, (8) clients with special circumstances, and (9) scheme values and integrity.

Conclusions:
The recommendations present an opportunity for agencies to review their existing claims management systems and procedures. They also provide the basis for the development of best practice guidelines, which may be adapted for application to compensation schemes in different contexts worldwide.
COVID-19 Vaccine Hesitancy Among Patients With Epilepsy or Other Chronic Conditions
Authors: Asadi-Pooya Ali A. , Barzegar Zohreh , Sadeghian Saeid , Nezafat Abdullah , Shahisavandi Mina , Nabavizadeh Seyed Ali 
Published: October 2021

AbstractObjectives:The aim of this study was to investigate the opinions of different groups of people in Iran on their willingness to receive a coronavirus disease 2019 (COVID-19) vaccine.Methods:In this cross-sectional study, we surveyed a sample (based on consecutive referrals) of 5 groups of people in late 2020: a group of the general population from Shiraz (without a history of any chronic medical or psychiatric problems), patients with epilepsy, patients with diabetes mellitus (DM), patients with cardiac problems, and patients with psychiatric problems. The survey included 4 general questions and 3 COVID-19–specific questions.Results:A total of 582 people participated. In total, 66 (11.3%) people expressed that they were not willing to receive a COVID-19 vaccine. Psychiatric disorders (odds ratio [OR]: 3.15; 95% confidence interval [CI]: 1.31-7.60; P = 0.006) and male sex (OR: 2.10; 95% CI: 1.23-3.58; P = 0.010) were significantly associated with COVID-19 vaccine hesitancy.Conclusion:Vaccine hesitancy is a global issue. Patients with psychiatric disorders had the highest rate of vaccine hesitancy. Previous studies have shown that depression and anxiety are associated with a reduced adherence to the recommended medical advice. Why male sex is associated with vaccine hesitancy is not clear. Researchers should investigate the rates and the factors affecting the vaccine hesitancy in their corresponding communities.
Understanding the motivations for open-source hardware entrepreneurship
Authors: Li Zhuoxuan , Seering Warren , Yang Maria , Eesley Charles 
Published: October 2021

AbstractHaving upended the traditional software development, which historically was centred exclusively on proprietary, copyright-protected code, open-source has now entered the physical artefact world. In doing so, it has started to change not only how physical products are designed and developed, but also the commercialisation process. In recent years, authors have witnessed entrepreneurs intentionally choosing not to patent their product design and technologies but instead licencing the designs and technologies under open-source licences. The entrepreneurs share their product designs online with their community – people who congregated due to the shared interests in products’ technology or project’s social objectives. Founding a startup firm without excluding others from using their own invention is not a common practice. Therefore, there is reason to ask if this choice a strategic decision or irrational action due to short-sightedness or extreme altruism? Conducting interviews with 65 founders, we grounded a framework explaining that the driver of going open is a result of both intrinsic and extrinsic factors. In addition, we observed the change of identities over time among the entrepreneurs. We hope to use this paper as a pilot study of this emerging socio-technological phenomenon, which is understudied relative to the proprietary product commercialisation process.