bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hydrogen-bond pattern to characterize water network
Authors: Aida Misako , Akase Dai 
Published: January 2019

Abstract
Hydrogen-bond (HB) patterns correspond to topologically distinct isomers of water clusters, and can be expressed by digraphs. The HB pattern is used to divide the configuration space of water cluster at a finite temperature. The populations of the HB patterns are transformed into the relative Helmholtz energies. The method is based on the combination of molecular simulation with graph theory. At a finite temperature it can be observed that other isomers than local minimum structures on the potential energy surface are highly populated. The dipole moment of a constituent molecule in a water cluster is enhanced depending on the local HB network around the water molecule. Rooted digraph is used to represent topologically distinct isomers of protonated water (PW) clusters. O–H bonds of PW clusters are classified into 10 topological types based on the combination of the local HB types of the contributing water molecules to the O–H bond. If the topological type is the same, vibrational frequencies of those O–H bonds of PW clusters are similar even in different isomers; i.e. vibrational frequency of O–H bond is transferable, and can be used as a vibrational spectral signature of PW clusters.
Cyborg Mantras, Technologies, and the Temporalities of Tradition
Authors: Ramnarine Tina K. 
Published: January 2019

AbstractThis article takes it point of departure from conversations with Gumbula that centred on the transmission of tradition and British imperial histories. It focuses on examples from India and its diaspora, discussing the mantra, in particular. This is a traditional genre evoking cultural and spiritual heritages, but it is also connected with cyber technologies. The discussion concludes with observations on post-national thinking and predictions from physicists on the future of humanity as a multi-planet species.
Collaboration with the Past, Collaboration for the Future: Joseph Neparrŋa Gumbula’s Makarr-garma Exhibition
Authors: Conway Rebecca 
Published: January 2019

AbstractThe Yolŋu elder and academic Joseph Neparrŋa Gumbula curated the exhibition, Makarr-garma: Aboriginal Collections from a Yolŋu Perspective (Makarr-garma), staged at the University of Sydney’s Macleay Museum from 29 November 2009 to 15 May 2010. This article describes this exhibition’s development and curatorial rationale. A product of his 2007 Australian Research Council (ARC) Indigenous Research Fellowship at the University, Makarr-garma reflected Gumbula’s Yolŋu philosophies as applied to collections in the Gallery, Libraries, Archives and Museums (GLAM) sector. Employing artworks, cultural objects, historic photographs, natural history specimens and his own manikay (songs), he framed this show as a garma (open) ceremonial performance that spanned an archetypal Yolŋu day. The exhibition was immersive and “culturally resonant” (Gilchrist, Indigenising), and provides intellectual and practical insights for the GLAM sector’s representation and management of Indigenous collections.
“This is the Circle of the Art World”: Joe Gumbula and the Value of Digital Repatriation in Australia and Beyond
Authors: De Largy Healy Jessica 
Published: January 2019

AbstractThe title of this article was inspired by a filmed interview that I conducted with Joe Gumbula in France in July 2007 during one of his ARC-funded research trips in response to a sceptical European curator who wanted to know why the Yolŋu wanted to have their materials back. Was it because they had lost their culture? Drawing on Joe’s eloquent response, I outline his pioneering perspective on museum collaborations and the digital repatriation of knowledge. Rather than transfixing things on computers, repatriation processes should be seen as modern pathways that link Indigenous peoples to their past, as well as present and future visions, enabling renewed performances of culture. This article has been adapted from my closing plenary address in tribute to Joe Gumbula at the 2017 Information Technologies and Indigenous Communities Symposium in Melbourne.
Joe Gumbula, the Inaugural Liya-ŋärra’mirri Visiting Fellow
Authors: Langton Marcia 
Published: January 2019

AbstractThis is my account of collaborating with Joseph Neparrŋa Gumbula and, in tribute to him and his teaching and scholarship, a discussion of the methodological considerations for teaching and research-based teaching of Yolŋu culture. By privileging the agency and ontology of exegetes such as Gumbula and working in partnership, Yolŋu knowledge has become a part of the modern academic canon as well as a literary legacy for Yolŋu people. The invariable context of the scholarly encounter with Indigenous knowledge is an intercultural one attended by significant historical problems from experiences of the colonial and postcolonial capture of most indigenous societies in modern nation states. Indigenous exegetes hold knowledge systems that exist in situ, in places held in long traditions of customary land tenure and jural principles that predate colonial and postcolonial systems, and inherited in each generation by a few honoured and remarkable people who take up the arduous responsibility of learning and transmitting knowledge practices and their spoken, sung and performed vehicles of expression.
Parametric Modeling and Dynamic Characteristics Analysis of a Power Turbine Rotor System
Authors: Huang Jingjing , Cui Lu , Li Suobin , Han Bingbing , Zheng Longxi 
Published: January 2019

Abstract
With the increasing requirements of aeroengine performance and working stability, the primary research task of the rotor system dynamics is to build a rotor system model that can reflect the actual situation and obtain the calculation results which can reflect the real dynamic characteristics of the rotor system. In this paper, the finite element analysis model of a power turbine rotor was established, and the dynamic model and dynamic characteristics of the complex rotor system were studied. The results indicated that the finite element model could reflect the real dynamic characteristics of the power turbine rotor. For the given design rotational speed, the critical speed had enough margin and the rotor system worked safely and smoothly. This research provided a reference and theoretical basis for the calculation of the dynamic characteristics of the similar rotor system.
Ecological and Construct Validity of a Repeated Sprint Test in Male Youth Soccer Players
Authors: Fernandes-Da-Silva Juliano , Castagna Carlo , Teixeira Anderson Santiago , Carminatti Lorival José , Francini Lorenzo , Póvoas Susana C.A. , Antonacci Guglielmo Luiz Guilherme 
Published: January 2019

Abstract
Fernandes-Da-Silva, J, Castagna, C, Teixeira, AS, Carminatti, LJ, Francini, L, Póvoas, SCA, and Antonacci Guglielmo, LG. Ecological and construct validity of a repeated sprint test in male youth soccer players. J Strength Cond Res 35(7): 2000–2009, 2021—This study aimed to examine the relationship between a repeated sprint ability (RSA) test (5 bouts of 30-m sprints interspersed by 30 seconds of recovery) and match-related physical performance in male youth soccer players. Although 60 outfield players were evaluated, only data from players who participated in the full matches (n = 39) were retained (8 central defenders, 7 external defenders, 8 central midfielders, 8 external midfielders, and 8 forwards). To verify the ecological validity of this RSA protocol, the association between the best (RSAbest) and mean (RSAmean) sprint time in the 5 × 30-m and physical match performance during friendly youth soccer games was examined. Physical match demands were assessed using global positioning system technology (10 Hz) considering distance covered in selected arbitrary speed categories. The absolute speed thresholds were the same for all the players. Players were categorized into 2 groups based on the 5 × 30-m performance: RSAmean times below (i.e., faster) and above (i.e., slower) the median value. Players with faster RSAmean times covered significantly more distance sprinting during friendly matches (606 ± 204 m, +47.0%; t = 4.953; effect size = 1.88, 1.24; 2.52, p ≤ 0.001) compared to their slower counterparts (322 ± 145 m). A large negative correlation (r = −0.63, −0.77; −0.44, p ≤ 0.001) was found between RSAbest time (4.59 ± 0.27 seconds) and match sprint distance (457 ± 229 m). Likewise, RSAmean time (4.76 ± 0.25 seconds) was also largely associated (r = −0.60, −0.75; −0.39; p ≤ 0.001) with in-game sprinting performance. The results of this study provided evidence to support the construct and ecological validity of the 5 × 30-m protocol in male youth soccer players. Furthermore, differences in 5 × 30-m performance explained the amount of sprinting activity performed during the match.
Size Effect of the Post-Peak Cyclic Behavior of Plain Concrete in Uniaxial Tension with Acoustic Emission Technique
Authors: Xu Lingyu , Chen Xudong , Chen Yuzhi 
Published: January 2019

Abstract
At present, studies about the size effect of concrete mainly focus on macroscopic mechanical behaviors like strength and fracture energy, while research on the size effect of the cyclic nonlinear properties of concrete is very rare. To further analyze the ambiguous concept of specimen size, three types of precut cylindrical concrete specimens with the same diameter but different heights, the same height but different crack depths, and the same aspect ratio but different volumes are used for the uniaxial post-peak cyclic tensile test. At the same time, the acoustic emission (AE) device is used to monitor and collect the AE signals in the loading process. According to the test results, no size effect exists in the accumulation of residual deformation, but the degradation of the unloading modulus is related to the specimen diameter. Meanwhile, the Kaiser effect is found in the analysis of AE signals. After the data analysis, a post-peak cyclic tensile model of concrete is proposed based on the size effect and damage evolution. The quantitative relationship among the model parameter, specimen aspect ratio, and damage is calculated. Finally, a good comparison is found between the predicted model and experimental result.
32-Bit One Instruction Core: A Low-Cost, Reliable, and Fault-Tolerant Core for Multicore Systems
Authors: Venkatesha Shashikiran , Parthasarathi Ranjani 
Published: January 2019

Abstract
Occurrences of both transient and permanent errors pose a major challenge in the wake of burgeoning growth in transistor density. Manufacturing defects and process variants lead to permanent faults, thereby lowering processor yields. In the arithmetic logic unit, single permanent faults result in the absolute failure of processors. Both low-energy neutrons and alpha particles from the cosmos induce transient errors by altering the state of the transistor. In wake of the implications, we postulate a new, reliable, fault-tolerant, low-cost 32-bit one instruction core (OIC) for a multicore system. “Low cost” here means low power and lower area. Notably, 32-bit OIC provides fault-free execution with triple redundant subtractors with one additional subtractor. It only executes one instruction called subleq repetitively in order to emulate the faulty instructions migrated into it by other cores. Hardware synthesis is undertaken to estimate leakage power, dynamic power, critical path delay, and area. The low-power 32-bit OIC consumes 1.3 mW, with a die area of 8,122 μm2. Apart from also adding performance overhead, 32-bit OIC outperforms its competitors with regard to reliability, area, power, and critical path delay. Additionally, the probabilistic estimate with link vulnerability factor—as a new parameter—is introduced to assess the effect of soft errors or transient faults on interconnect wires, which are then quantitatively analyzed to illuminate the resilience of 32-bit OIC hardware structure. Additionally, we propose new design alternatives (including existing ones) for heterogeneous multicore systems in order to develop low-cost solutions with a primary focus on reliability.
Deletion ofRipk3Prevents Motor Neuron DeathIn Vitrobut notIn Vivo
Authors: Dermentzaki Georgia , Politi Kristin A. , Lu Lei , Mishra Vartika , Pérez-Torres Eduardo J. , Sosunov Alexander A. , McKhann Guy M. , Lotti Francesco , Shneider Neil A. , Przedborski Serge 
Published: January 2019

AbstractIncreasing evidence suggests that necroptosis, a form of programmed cell death (PCD), contributes to neurodegeneration in several disorders, including ALS. Supporting this view, investigations in bothin vitroandin vivomodels of ALS have implicated key molecular determinants of necroptosis in the death of spinal motor neurons (MNs). Consistent with a pathogenic role of necroptosis in ALS, we showed increased mRNA levels for the three main necroptosis effectorsRipk1,Ripk3, andMlklin the spinal cord of mutant superoxide dismutase-1 (SOD1G93A) transgenic mice (Tg), an established model of ALS. In addition, protein levels of receptor-interacting protein kinase 1 (RIPK1; but not of RIPK3, MLKL or activated MLKL) were elevated in spinal cord extracts from these Tg SOD1G93Amice. In postmortem motor cortex samples from sporadic and familial ALS patients, no change in protein levels of RIPK1 were detected. Silencing ofRipk3in cultured MNs protected them from toxicity associated with SOD1G93Aastrocytes. However, constitutive deletion ofRipk3in Tg SOD1G93Amice failed to provide behavioral or neuropathological improvement, demonstrating no similar benefit ofRipk3silencingin vivo. Lastly, we detected no genotype-specific myelin decompaction, proposed to be a proxy of necroptosis in ALS, in either Tg SOD1G93AorOptineurinknock-out mice, another ALS mouse model. These findings argue against a role for RIPK3 in Tg SOD1G93A-induced neurodegeneration and call for further preclinical investigations to determine if necroptosis plays a critical role in the pathogenesis of ALS.
Estradiol-Induced Potentiation of Dopamine Release in Dorsal Striatum Following Amphetamine Administration Requires Estradiol Receptors and mGlu5
Authors: Song Zhimin , Yang Hongyan , Peckham Elizabeth M. , Becker Jill B. 
Published: January 2019

AbstractEstradiol potentiates behavioral sensitization to cocaine as well as self-administration of cocaine and other drugs of abuse in female rodents. Furthermore, stimulated dopamine (DA) in the dorsolateral striatum (DLS) is rapidly enhanced by estradiol, and it is hypothesized that this enhanced DA release mediates the more rapid escalation of drug taking seen in females, compared with males. The mechanisms mediating the effect of estradiol to enhance stimulated DA release were investigated in this study. Usingin vivomicrodialysis and high performance liquid chromatography coupled with electrochemical detection, we first examined the effect of estradiol on amphetamine-induced DA increase in the DLS of ovariectomized rats. We then tested whether the potentiation of this DA increase could be blocked by the estradiol receptor antagonist, ICI 182,780 (ICI), or an antagonist to the metabotropic glutamate receptor subtype 5 (mGlu5), 2-methyl-6-(phenylethynyl)pyridine (MPEP). There is evidence that estradiol receptors collaborate with mGlu5 within caveoli in DLS and mGlu5 is hypothesized to mediate many of the effects of estradiol in the addiction processes in females. Our data show that estradiol enhances the DA response to amphetamine. Either ICI or MPEP prevented the effect of estradiol to enhance DA release. Importantly, our results also showed that neither ICI or MPEP alone is able to influence the DA response to amphetamine when estradiol is not administrated, suggesting that ICI and MPEP act via estradiol receptors. Together, our findings demonstrate that estradiol potentiates amphetamine-stimulated DA release in the DLS and this effect requires both estradiol receptors and mGlu5.
Enhanced Activation of HCN Channels Reduces Excitability and Spike-Timing Regularity in Maturing Vestibular Afferent Neurons
Authors: Ventura Christopher M. , Kalluri Radha 
Published: January 2019

Vestibular ganglion neurons (VGNs) transmit information along parallel neuronal pathways whose signature distinction is variability in spike-timing; some fire at regular intervals while others fire at irregular intervals. The mechanisms driving timing differences are not fully understood but two opposing (but not mutually exclusive) hypotheses have emerged. In the first, regular-spiking is inversely correlated to the density of low-voltage-gated potassium currents (IKL). In the second, regular spiking is directly correlated to the density of hyperpolarization-activated cyclic nucleotide-sensitive currents (IH). Supporting the idea that variations in ion channel composition shape spike-timing, VGNs from the first postnatal week respond to synaptic-noise-like current injections with irregular-firing patterns if they haveIKLand with more regular firing patterns if they do not. However,in vitrofiring patterns are not as regular as thosein vivo. Here we considered whether highly-regular spiking requiresIHcurrents and whether this dependence emerges later in development after channel expression matures. We recorded from rat VGN somata of either sex aged postnatal day (P)9–P21. Counter to expectation,in vitrofiring patterns were less diverse, more transient-spiking, and more irregular at older ages than at younger ages. Resting potentials hyperpolarized and resting conductance increased, consistent with developmental upregulation ofIKL. Activation ofIH(by increasing intracellular cAMP) increased spike rates but not spike-timing regularity. In a model, we found that activatingIHcounter-intuitively suppressed regularity by recruitingIKL. Developmental upregulation inIKLappears to overwhelmIH. These results counter previous hypotheses about howIHshapes vestibular afferent responses.SIGNIFICANCE STATEMENTVestibular sensory information is conveyed on parallel neuronal pathways with irregularly-firing neurons encoding information using a temporal code and regularly-firing neurons using a rate code. This is a striking example of spike-timing statistics influencing information coding. Previous studies from immature vestibular ganglion neurons (VGNs) identified hyperpolarization-activated mixed cationic currents (IH) as driving highly-regular spiking and proposed that this influence grows with the current during maturation. We found thatIHbecomes less influential, likely because maturing VGNs also acquire low-voltage-gated potassium currents (IKL), whose inhibitory influence opposesIH. Because efferent activity can partly closeIKL, VGN firing patterns may become more receptive to extrinsic control. Spike-timing regularity likely relies on dynamic ion channel properties and complementary specializations in synaptic connectivity.
The Pain of Sleep Loss: A Brain Characterization in Humans
Authors: Krause Adam J. , Prather Aric A. , Wager Tor D. , Lindquist Martin A. , Walker Matthew P. 
Published: January 2019

Sleep loss increases the experience of pain. However, the brain mechanisms underlying altered pain processing following sleep deprivation are unknown. Moreover, it remains unclear whether ecologically modest night-to-night changes in sleep, within an individual, confer consequential day-to-day changes in experienced pain. Here, we demonstrate that acute sleep deprivation amplifies pain reactivity within human (male and female) primary somatosensory cortex yet blunts pain reactivity in higher-order valuation and decision-making regions of the striatum and insula cortex. Consistent with this altered neural signature, we further show that sleep deprivation expands the temperature range for classifying a stimulus as painful, specifically through a lowering of pain thresholds. Moreover, the degree of amplified reactivity within somatosensory cortex following sleep deprivation significantly predicts this expansion of experienced pain across individuals. Finally, outside of the laboratory setting, we similarly show that even modest nightly changes in sleep quality (increases and decreases) within an individual determine consequential day-to-day changes in experienced pain (decreases and increases, respectively). Together, these data provide a novel framework underlying the impact of sleep loss on pain and, furthermore, establish that the association between sleep and pain is expressed in a night-to-day, bidirectional relationship within a sample of the general population. More broadly, our findings highlight sleep as a novel therapeutic target for pain management within and outside the clinic, including circumstances where sleep is frequently short yet pain is abundant (e.g., the hospital setting).SIGNIFICANCE STATEMENTAre you experiencing pain? Did you have a bad night of sleep? This study provides underlying brain and behavioral mechanisms explaining this common co-occurrence. We show that sleep deprivation enhances pain responsivity within the primary sensing regions of the brain's cortex yet blunts activity in other regions that modulate pain processing, the striatum and insula. We further establish that even subtle night-to-night changes in sleep in a sample of the general population predict consequential day-to-day changes in pain (bidirectionally). Considering the societal rise in chronic pain conditions in lock-step with the decline in sleep time through the industrial world, our data support the hypothesis that these two trends may not simply be co-occurring but are significantly interrelated.