bluuebunny/crossref_metadata_2025_split huggingface dataset:
A novel re-entrant honeycomb metamaterial with tunable bandgap
Authors: Tao Zhi , Ren Xin , Sun Long , Zhang Yi , Jiang Wei , Zhao Ai Guo , Xie Yi Min 
Published: July 2022

Abstract
An auxetic metamaterial consisting of a re-entrant honeycomb structure with hierarchical characteristics (RHS-H) is proposed. The new structure is constructed by attaching small re-entrant structural unit cells to the nodes of the traditional re-entrant structures. Not only can the overall stiffness and stability of the proposed structure be tuned during compression and tension, but a better acoustic performance is also obtained compared with traditional re-entrant honeycomb structures. Firstly, the deformation mechanism of the bandgap is numerically explored by analyzing the dispersion curve of the microstructure as well as the upper and lower bounds of the bandgap vibrational modes. Secondly, the bandgap tunability of the designed structure under uniaxial compression or tension is discussed. Finally, the transmittance of finite period size is calculated to verify the numerical results of the bandgap. Numerical simulation results show that the proposed novel RHS-H has attenuation characteristics of a tunable low-frequency plane wave through a reasonable selection of compressive strain, tensile strain and geometric parameters. The vibration damping strength of the bandgap increases under tensile strain. When the auxetic effect is enhanced, the first and second bandgaps become lower and wider. The novel metamaterial has potential applications in vibration and noise reduction and the design of acoustic devices in dynamic environments, while providing new ideas and a methodology for the real-time adjustment of bandgaps.
A simple model for high rotational excitations of molecules in a superfluid
Authors: Cherepanov Igor N , Bighin Giacomo , Schouder Constant A , Chatterley Adam S , Stapelfeldt Henrik , Lemeshko Mikhail 
Published: July 2022

Abstract
Recently it became possible to study highly excited rotational states of molecules in superfluid helium through nonadiabatic alignment experiments (Cherepanov et al 2021 Phys. Rev. A 104 L061303). This calls for theoretical approaches that go beyond explaining renormalized values of molecular spectroscopic constants, which suffices when only the lowest few rotational states are involved. As the first step in this direction, here we present a basic quantum mechanical model describing highly excited rotational states of molecules in superfluid helium nanodroplets. We show that a linear molecule immersed in a superfluid can be seen as an effective symmetric top, similar to the rotational structure of radicals, such as OH or NO, but with the angular momentum of the superfluid playing the role of the electronic angular momentum in free molecules. The simple theory sheds light onto what happens when the rotational angular momentum of the molecule increases beyond the lowest excited states accessible by infrared spectroscopy. In addition, the model allows to estimate the effective rotational and centrifugal distortion constants for a broad range of species and to explain the crossover between light and heavy molecules in superfluid 4He in terms of the many-body wavefunction structure. Some of the above mentioned insights can be acquired by analyzing a simple 2 × 2 matrix.
Influences of multicenter bonding and interstitial elements on pseudo-twinned γ-TiAl crystal
Authors: Huang Jianxin , Wang Jinkai , Wang Hao , Lu Jiajun , Lu Xiao-Gang , Jiang Jun , Chen Ying 
Published: July 2022

Abstract
The electronic properties of pseudo-twin boundary in γ-TiAl intermetallic and the influence of interstitial alloying atoms on them are investigated through ab initio calculation. Similar to true twin boundary, there exist three-central bonds at the pseudo-twin boundary, which are discussed by local energy scheme combined with electron localization function and quantum theory of atoms in molecules schemes. The effect of interstitial atoms C, N, H and O on slipping energy is separated into the contributions of affinity of interstitial atoms to host atoms and the multi-center bonds. In shearing process of pseudo-twin configuration, a local true twin boundary is formed in the neighbor layer of the initial pseudo-twin boundary, resulting in a plateau formed in stacking fault energy curve.
Thawing k-essence dark energy in the PAge space
Authors: Huang Zhiqi 
Published: July 2022

AbstractA broad class of dark energy models can be written in the form of k-essence, whose Lagrangian density is a two-variable function of a scalar fieldϕand its kinetic energyX≡12∂μϕ∂μϕ. In the thawing scenario, the scalar field becomes dynamic only when the Hubble friction drops below its mass scale in the late Universe. Thawing k-essence dark energy models can be randomly sampled by generating the Taylor expansion coefficients of its Lagrangian density from random matrices [Huang Z 2021Phys. Rev.D104103533]. Reference [Huang Z 2021Phys. Rev.D104103533] points out that the non-uniform distribution of the effective equation of state parameters (w0,wa) of the thawing k-essence model can be used to improve the statistics of model selection. The present work studies the statistics of thawing k-essence in a more general framework that is Parameterized by the Age of the Universe (PAge) [Huang Z 2020Astrophys. J. Lett.892L28]. For fixed matter fraction Ωm, the random thawing k-essence models cluster in a narrow band in the PAge parameter space, providing a strong theoretical prior. We simulate cosmic shear power spectrum data for the Chinese Space Station Telescope optical survey, and compare the fisher forecast with and without the theoretical prior of thawing k-essence. For an optimal tomography binning scheme, the theoretical prior improves the figure of merit in PAge space by a factor of 3.3.
An estimate of dibaryon production in the process of

at

anda facility*
Authors: Dong Yubing , Shen Pengnian 
Published: July 2022

Abstract
Although

was first observed by WASA@COSY, its existence has yet to be further confirmed in different types of processes at other facilities. In this work, the possible production of the single dibaryon state

in the process of

in a future experiment at the

anda facility is estimated. Following the method used in our previous study (Chin. Phys. C 46, 023105), a phenomenological Lagrangian approach is employed to study the single

production. Based on the conclusions obtained by the non-relativistic constituent quark model, the cross section of the

reaction via the

intermediate state is estimated, which is in the order of

. It is shown that the dominant contribution comes from the diagram with the

subprocess. However, it is difficult to measure owing to the large background. Further, although the cross section of the diagram with the

subprocess is small, i.e., only approximately

of the total cross section or even smaller, the corresponding number of events is still sufficiently large and can be measured at

anda because the outgoing

and

come from the same source

.
On farmers’ perceptions of climate change and its nexus with climate data and adaptive capacity. A comprehensive review
Authors: Ricart Sandra , Castelletti Andrea , Gandolfi Claudio 
Published: July 2022

Abstract
Farmers’ perception of climate change is crucial in adaptation intention and process. However, farmers’ perceptions may not be timely, accurate and systematically consistent with the direction and significance of observational records. Although some research compared farmers’ perceptions and climate data, little attention has been paid to comprehensibly analyse both data sources discrepancies based on empirical studies results. By combining bibliometrics and a systematic review approach, we identify which approaches are used to compare perceived and observed data, how both patterns have been mutually evolved, which factors determine their (in)consistency, and if their accordance and robustness affect farmers’ adaptive capacity. We analyse a portfolio of 147 papers collected from the Scopus library catalogue since 2000. The bibliometric analysis was coupled with an exploratory analysis of 98 papers selected from the original portfolio. The literature is extensive, fast-growing, and spans several disciplines. We identify four consolidated research lines: (a) perceived risk and farmers’ adaptive capacity nexus, (b) crop vulnerability due to temperature increase and erratic rainfall patterns, (c) forecasting use and influence in farmers’ decisions, and (d) climate change awareness conditioning farmers’ profiles. Nonetheless, we observe some research gaps: (a) a conceptual mismatch in ‘normal pattern’ or ‘drought’ meaning, (b) poor or limited data from meteorological stations, (c) overlook or oversimplification of local knowledge in describing perception, (d) farmers’ memory weaknesses to keep track of climate alterations, and (e) a geographical dissonance in favour of Global South regions. Our science-metric study also reveals some research questions to be consolidated: Can the perception of extreme events increase climate change awareness? Can greater awareness reduce discrepancy with observed data? How do heuristics and socio-psychological filters influence farmers’ awareness and interpretation of climate data? We suggest putting major efforts into reinforcing these research lines as part of a novel domain-dependent trend to reduce the discrepancy.
Energy stability of thermally modulated inclined fluid layer
Authors: Arora Manisha , Bajaj Renu 
Published: July 2022

Abstract
The stability of natural convection in thermally modulated inclined fluid layer is analyzed using linear instability analysis and generalized energy stability theory. A sufficient condition for the global stability of the fluid layer is obtained. The stability boundaries are found in terms of the Rayleigh number. Shooting method is used to find the stability limits numerically. Uncertain stability region is observed between the linear and the nonlinear stability boundaries. The onset of instability depends upon the frequency and the amplitude of modulation.
Relationship between the digital economy, resource allocation and corporate carbon emission intensity: new evidence from listed Chinese companies
Authors: Chen Pengyu 
Published: July 2022

Abstract
Many studies have focused on the relationship between the digital economy and carbon emissions at the macro level. However, there is a relative dearth of research on this relationship at the micro level. In this study, we determined the impact of the digital economy on the carbon emissions of individual companies and the mediating role of resource allocation in this relationship using data from listed Chinese manufacturing companies between 2011 and 2019. This analysis yielded three main findings. First, based on firm-level carbon emissions and the borderless organization theory, we found that the digital economy significantly reduced corporate carbon emission intensity. Second, the digital economy reduced resource misallocation and improved resource efficiency, which in turn reduced corporate carbon emission intensity. Third, market drivers and government regulations improved and hindered the ability of the digital economy to reduce corporate carbon emission intensity, respectively. These findings provide evidence for the need for government investment in the development of digital technologies and corporate digitization; the use of digital technologies by businesses to improve resource and energy efficiency; and minimal government regulation of the digital economy in favor of self-regulation through market forces. These measures are important for economic transformation and the achievement of carbon neutrality in emerging developing countries, including China.
A-02 Concussion at One-Year Post-Injury and Anxiety Do Not Predict Head Protective and Jump Landing Functional Reaction Time
Authors: Anderson M N , Lynall R C , O'Connor P J , Schmidt J D 
Published: July 2022

Abstract
Purpose: Individuals with a concussion history are more likely to sustain subsequent concussions and/or musculoskeletal injuries. Underlying mechanisms are unclear; reaction time (RT) deficits associated with anxiety may play an important role. The primary aim of this study was to determine if anxiety and recent concussion history predict functional RT (i.e., head protective, jump landing) under single and dual-task conditions. Methods: 40 participants (concussion:healthy = 20:20; time since concussion = 11.8 months) completed the State–Trait Anxiety Inventory, anxiety ratings before and after each task, and performed RT tasks. We used a virtual reality environment and motion capture laboratory to collect RTs for head protective and jump landing, respectively. Participants completed assessments under both single-task (i.e., “Focus solely on completing the task as quickly as possible”) and dual-task (i.e., “Subtract as quickly and accurately as possible as you await your visual stimulus”) conditions. Instructions gave equal weight to speed and accuracy. All RTs were calculated (ms) as the time from visual onset of stimuli to first movement ≥3 cm of hands (head protective) or sacral body (jump landing). A series of linear regression models determined if the independent variables predicted RTs. Results: Regression models did not explain a significant proportion of the variance in head protective (single- R2 = 0.05; p = 0.78; dual- R2 = 0.09; p = 0.49), or jump landing (single- R2 = 0.21; p = 0.08; dual- R2 = 0.12; p = 0.32) RTs. Conclusions: In a low anxiety sample, recent concussion history and anxiety do not predict clinical or functional reaction times at twelve-months post-concussion. If these differences exist, they are likely resolved by this time.
A-11 Social Determinants of Health in the Diagnosis and Management of Pediatric Concussion: A Content Analysis
Authors: Cook N E , Kissinger-Knox A , Iverson I A , Liu B C , Iverson G L 
Published: July 2022

Abstract
Purpose: This content analysis examined the literature underlying the Centers for Disease Control and Prevention Guideline on the Diagnosis and Management of Mild Traumatic Brain Injury Among Children (i.e., the “Guideline”) to determine the extent to which social determinants of health (SDH) were examined or addressed. Methods: A published systematic review, that formed the basis for the Guideline, included 37 studies addressing diagnosis, prognosis, and treatment/rehabilitation. We examined those studies to identify SDH domains and associated subcategories derived from the Healthy People 2020 and 2030 websites. Pairs of raters coded each article with disagreements resolved by consensus. Results: At least one SDH domain was represented in 60% of the articles, usually mentioned descriptively, as a covariate, or as a design consideration. Very few were addressed as a primary focus of the study. The most frequently represented SDH domain was Education Access (43.2% of studies), receiving credit most often for reporting on participants with learning disabilities. Social and Community Context, broadly defined, was represented in nearly 1 of 3 studies (29.7%). Economic Stability and Health Care Access domains were included in 6 studies (16.2%). Some studies (k = 6, 16.2%) referenced SDH as important to consider for future research. The Guideline includes some commentary on health literacy and socioeconomic status. Conclusions: Social determinants of health are largely unrepresented as important or meaningful variables influencing the Guideline on the Diagnosis and Management of Mild Traumatic Brain Injury Among Children, or in the studies included in the systematic review that informed the guideline.
A-14 Clinical Outcome Following Concussion Among College Athletes with a Prior Concussion History: A Systematic Review
Authors: Gaudet C E , Iverson G L , Kissinger-Knox A , Van Patten R , Cook N E 
Published: July 2022

Abstract
Purpose: This systematic review examined the association between prior concussion history and clinical outcomes following concussion among collegiate athletes. Methods: This review was registered with PROSPERO database for systematic reviews (protocol ID: CRD42016041479 & CRD42019128300) and adhered to PRISMA guidelines. Three searches of nine online databases were conducted: (1) database inception to June of 2016; (2) January 1, 2016 to February 1, 2019; and (3) February 1, 2019 to May 15, 2021. We screened 5118 abstracts and 619 full-text articles were reviewed. We utilized a likelihood heuristic to assess evidence for an association between concussion history and clinical outcomes. Results: Sixteen studies met inclusion criteria, and 13 studies reported the number of participants with a history of prior concussions (≥1)—which totaled 1690 of 4573 total participants (37.0%). Newcastle-Ottawa risk of bias ratings ranged from 3 to 9 (mean = 5.4, SD = 1.4). Across all studies, 43.8% (k = 7/16) reported a statistically significant result among primary analyses showing an association between concussion history and worse clinical outcome. A minority of studies reporting on symptom duration (4/13, 30.8%) and time to return to play (2/7, 28.6%) found an association between concussion history and worse outcome. Conclusions: The question of whether college athletes with a history of concussion have, on average, worse clinical outcome from their next concussion remains unresolved. Many studies to date are small, and only three focused specifically on this topic. Important clinical outcomes, such as time to return to academics, have not been adequately studied. Larger hypothesis-driven studies are needed.
A-15 Gender Differences in Self-Reported Symptomatology at Baseline Testing
Authors: Gilmore M , Golden C 
Published: July 2022

Abstract
Purpose: To examine whether there are gender differences in symptomatology reported at baseline testing in individuals who did not report a prior concussion history or a diagnosis of ADHD, dyslexia, autism, headaches, psychiatric conditions, substance abuse, and epilepsy at baseline using ImPACT. Methods: Participants were selected from an archival de-identified sports medicine ImPACT database. The sample (n = 1898) consisted of high school athletes who were primarily male (60.8%) adolescents in South Florida with an overall mean age of 15.35 years (SD = 1.09). A series of independent samples t-test was conducted to determine the relationship between gender and composite score performance at baseline. All analyses were conducted at p &lt; 0.05. Results: The independent samples t-test found significant differences between gender and self-reported symptomatology concerning headaches [t(1,895) = 5.17, p &lt; 0.001], irritability [t(1,895) = 5.23, p &lt; 0.001], nervousness [t(1895) = 6.06, p &lt; 0.001], sadness [t(1,895) = 3.86, p &lt; 0.001], and feeling more emotional [t(1,895) = 7.83, p &lt; 0.001]. No differences were seen in sleep, vestibular somatic, or cognitive symptoms. Conclusions: Results indicate high school age females are more likely to endorse symptoms related to disturbances in emotions and headaches when compared to their male counterparts at baseline testing. Differences were not seen between groups in regard to sleep, cognitive, and vestibular somatic symptoms. These results suggest that may be a specific gender profile of symptoms that can expected upon completion of baseline testing in high school athletes. Furthermore, these results signify certain symptoms that may need to be of more concern post-concussion in females when determining return to play and education.
A-25 Transcranial Photobiomodulation Treatment Effects In Former Athletes With Repetitive Head Hits
Authors: Liebel S W , Johnson P K , Lindsey H M , Russell H A , Hovenden E S , Velez C , Carr L S , Wilde E A , Tate D F 
Published: July 2022

Abstract
Purpose: Psychiatric symptoms, sleep disruption, reaction time, and fine motor coordination are associated with repetitive head hits. Transcranial photobiomodulation (tPBM) has been proposed as a non-invasive treatment for post-head injury symptoms. This proof-of-concept study begins to address tPBM’s potential utility in the neurorehabilitation of athletes with repetitive head hits. Methods: Study participants included 49 former male and female athletes (Mage = 45.90 years; SD = 14.45) with a history of repetitive head hits. Inclusion criteria were: aged 18–65 years and a self-reported history of concussive and/or repetitive sub-concussive events. We conducted a non-randomized study design wherein participants received active tPBM treatment for 8 weeks. At pre- and post-treatment timepoints, self-report questionnaires for depression (CES-D), posttraumatic stress (PCL-5), adjustment (MPAI-4), and sleep quality (PSQI) were obtained, as were assessments of simple reaction time, grip strength, and hand dexterity (Grooved Pegboard). Paired t-tests analyzed pre- and post-treatment effects. Results: Following tPBM treatment, study participants demonstrated statistically significant reductions in self-reported depression (t = 4.54, p &lt; 0.001, d = 0.75), posttraumatic stress (t = 3.43, p &lt; 0.001, d = 0.54), and adjustment (t = 5.23, p &lt; 0.001, d = 0.83) symptoms compared to pre-treatment levels. Sleep quality (t = 3.72, p &lt; 0.001, d = 0.57), simple reaction time (t = 4.57, p &lt; 0.001, d = 0.73), dominant hand grip strength (t = 2.59, p = 0.013, d = 0.41), and nondominant hand grip strength (t = 4.18, p &lt; 0.001, d = 67) improved following tPBM treatment. Bilateral hand dexterity did not significantly change following treatment. Conclusions: Results suggest that tPBM may reduce psychiatric symptoms and improve sleep quality, simple reaction time, and grip strength among former athletes with repetitive head hits. These data support future research on the potential neurorehabilitative effects of tPBM.
A-45 Clinical Considerations of Neuropsychologists for Treating Concussions
Authors: Stephenson K , O’Hara M , Holland C , Womble M , Jennings S , Weber Rawlins M , Elbin R J 
Published: July 2022

Abstract
Purpose: The purpose of this study was to explore sex specific clinical considerations by neuropsychologists’ and general clinical considerations for the treatment of concussion. Methods: Fourteen clinical neuropsychologists who see concussion patients regularly (&gt;1 case per week) were interviewed using a semi-structured guide that included a generic patient vignette. Participants were asked about clinical considerations that they faced while assessing, managing, and treating concussion. Two investigators independently coded the transcriptions and met to compare coding processes, definitions, and categories. A final codebook was developed in an iterative fashion and reapplied to all transcripts. Independent coding and member checks contributed to the trustworthiness of the data. Results: Participants’ clinical experience in treating concussion ranged from 1 to 40 years, and the sample was 64% female (9/14). Four major themes were identified, including patients’ sex considerations, sleep and napping, patient education and reassurance, and mental health considerations. Several participants (4/14; 29%) noted the lack of action-oriented clinical recommendations for previously documented sex differences (i.e., menstruation). There was a lack of uniformity in sleep and napping recommendations across the participants (e.g., permitting napping vs recommended nap-length). Participants noted that a large portion of their clinical time was spent educating and reassuring patients that concussion is treatable. Comorbid mental health considerations such as anxiety were a prevailing clinical concern across participants. Conclusions: The study revealed the need for better action-oriented clinical recommendations in consensus statements that address the four main themes of sex considerations, sleep and napping considerations, patient education and reassurance, and mental health considerations.