bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Multibody Dynamics Approach to Limit Cycle Walking
Authors: He Jiawei , Ren Gexue 
Published: April 2019

SummaryThough significant efforts are made to develop mathematical models of the limit cycle walking (LCW), there is still a lack of a general and efficient framework to study the periodic solution and robustness of a complex model like human with knees, ankles and flat feet. In this study, a numerical framework of the LCW based on general multibody system dynamics is proposed, especially the impacts between the feet and the ground are modeled by Hunt–Crossley normal contact force and Coulomb friction force, and the modeling of the knee locking is presented as well. Moreover, event-based operating strategies are presented to deal with controls for the ground clearance and the knee locking. Importantly, a fast and efficient two-step algorithm is proposed to search for stable periodic gaits. Finally, maximum allowable disturbance is adopted as the index for stability analysis. All these features could be readily implemented in the framework. The presented solution is verified on a compass-like passive dynamic walking (PDW) walker with results in the literature. Based on this framework, a fairly complicated level-walking walkers with ankles and knees under control are analyzed and their periodic gaits are obtained, and surprisingly, double stable periodic gaits with, respectively, low speed and high speed are found.
A generalised quantifier theory of natural language in categorical compositional distributional semantics with bialgebras
Authors: Hedges Jules , Sadrzadeh Mehrnoosh 
Published: April 2019

AbstractCategorical compositional distributional semantics is a model of natural language; it combines the statistical vector space models of words with the compositional models of grammar. We formalise in this model the generalised quantifier theory of natural language, due to Barwise and Cooper. The underlying setting is a compact closed category with bialgebras. We start from a generative grammar formalisation and develop an abstract categorical compositional semantics for it, and then instantiate the abstract setting to sets and relations and to finite-dimensional vector spaces and linear maps. We prove the equivalence of the relational instantiation to the truth theoretic semantics of generalised quantifiers. The vector space instantiation formalises the statistical usages of words and enables us to, for the first time, reason about quantified phrases and sentences compositionally in distributional semantics.
Successful childbirth in a Fontan with protein losing enteropathy
Authors: Ryan Kristi N. , Leonardi Michael R. , Hasselman Ty E. 
Published: April 2019

AbstractAs survival rates and functional status of the adult single ventricle population have grown, some may become pregnant inadvertently or against our advice. The outcomes are often poor, being worse for the fetus/baby rather than the mother with a Fontan circuit. No reports of a successful delivery of a healthy baby to a Fontan mother with protein losing enteropathy were found in the literature. We present one such case.
Disaster Management: Knowledge, Attitude, Behavior, Willingness, and Preparedness among Nigerian Dentists
Authors: Odai Emeka Danielson , Azodo Chinedu Clement , Chhabra Kumar Gaurav 
Published: April 2019

Objective:This study’s objective was to explore the disaster management knowledge, attitude, behavior, willingness, and assistance among Nigerian dentists.Methods:This cross-sectional, questionnaire-based study was conducted in Edo State (Nigeria) among selected Nigerian dentists that attended the Annual Scientific Conference of School of Dentistry, University of Benin (Benin City, Nigeria) between 2016 and 2017. The 54-item, modified Chhabra, et al disaster management questionnaire, which elicited information on demographic characteristics, disaster management knowledge, attitude, preparedness, and willingness, was the data collection tool.Results:A total of 126 dentists participated in the study, giving a 68.1% retrieval rate. The willingness to render assistance in the case of disaster among the participants was 95.2%. More than three-quarters (81.0%) reported that they had not received any disaster management training and 92.9% reported that they were not familiar with any government paper on response to disaster. The mean disaster management knowledge and attitude scores were 16.95 (SD = 0.40) and 34.62 (SD = 0.56), respectively. Disaster management knowledge had positive significant correlation with attitude and behavior. The disaster management attitude had positive significant correlation with behavior and negative significant correlation with preparedness. Disaster management behavior had positive significant correlation with preparedness and willingness to render assistance. Willingness to render assistance had significant correlation with preparedness.Conclusion:Data from this study revealed high-level of willingness to render assistance in disaster, high disaster management attitude, but with low disaster management knowledge, behavior, and preparedness. The significant correlation between knowledge, attitude, behavior, and preparedness implies that training will offer immense benefit.Odai ED, Azodo CC, Chhabra KG. Disaster management: knowledge, attitude, behavior, willingness, and preparedness among Nigerian dentists.Prehosp Disaster Med. 2019;34(2):132–136
A Facebook Page Created Soon After the Amatrice Earthquake for Deaf Adults and Children, Families, and Caregivers Provides an Easy Communication Tool and Social Satisfaction in Maxi-Emergencies
Authors: Rotondi Luca , Zuddas Marta , Marsella Pasquale , Rosati Paola 
Published: April 2019

Although international and Italian conventions have issued numerous communication protocols to assist people with disabilities during earthquakes or other maxi-emergencies, no tailored strategies exist to create and disseminate information online to deaf people. On August 24, 2016, a devastating earthquake destroyed Amatrice in Central Italy. This natural disaster underlined the lack of information on disabled people possibly involved and the lack of tailored, online communication tools. Having various registries listing disabled residents in the earthquake area might have benefitted emergency procedures. To access information easily and expedite risk management, the authors developed an online information tool for deaf persons, their families, and caregivers. Within hours after the earthquake, they published a Facebook page (Facebook, Inc.; Menlo Park, California USA) including a video provided with subtitles, Italian sign language, and service numbers. Those who accessed the Facebook page spread the information to other social media. Although no registry yet specifies figures, the annual incidence of approximately three to five/1,000 new deaf persons diagnosed in Italy implies that around 5.4% of the total 43,507 Italian deaf people live in the earthquake territory, and presumably 1.3% are younger than 18 years of age. The Facebook page obtained unexpectedly numerous accesses and satisfaction from deaf adults and families with deaf children, as well as hearing family relatives and caregivers. A total of 60% deaf and 10% hearing people asked for more information. Despite limitations, the effort to develop a page for deaf people and their families, via a world-wide social media, permits fast access, outlines safety precautions during maxi-emergencies, and disseminates essential information designed for deaf people on civil protection services. The Facebook page provides a replicable example for developing similar, user-friendly, online tools for disabled groups to disseminate important safety information after earthquakes or other maxi-emergencies.Rotondi L, Zuddas M, Marsella P, Rosati P. A Facebook page created soon after the Amatrice Earthquake for deaf adults and children, families, and caregivers provides an easy communication tool and social satisfaction in maxi-emergencies. Prehosp Disaster Med. 2019;34(2):137–141
A Cross-Over Trial Comparing Conventional to Compression-Adjusted Ventilations with Metronome-Guided Compressions
Authors: Nikolla Dhimitri A. , Kramer Brandon J. , Carlson Jestin N. 
Published: April 2019

Introduction:Hyperventilation during cardiopulmonary resuscitation (CPR) negatively affects cardiopulmonary physiology. Compression-adjusted ventilations (CAVs) may allow providers to deliver ventilation rates more consistently than conventional ventilations (CVs). This study sought to compare ventilation rates between these two methods during simulated cardiac arrest.Null Hypothesis:That CAV will not result in different rates than CV in simulated CPR with metronome-guided compressions.Methods:Volunteer Basic Life Support (BLS)-trained providers delivered bag-valve-mask (BVM) ventilations during simulated CPR with metronome-guided compressions at 100 beats/minute. For the first 4-minute interval, volunteers delivered CV. Volunteers were then instructed on how to perform CAV by delivering one breath, counting 12 compressions, and then delivering a subsequent breath. They then performed CAV for the second 4-minute interval. Ventilation rates were manually recorded. Minute-by-minute ventilation rates were compared between the techniques.Results:A total of 23 volunteers were enrolled with a median age of 36 years old and with a median of 14 years of experience. Median ventilation rates were consistently higher in the CV group versus the CAV group across all 1-minute segments: 13 vs 9, 12 vs 8, 12 vs 8, and 12 vs 8 for minutes one through four, respectively (P &lt;.01, all). Hyperventilation (&gt;10 breaths per minute) occurred 64% of the time intervals with CV versus one percent with CAV (P &lt;.01). The proportion of time which hyperventilation occurred was also consistently higher in the CV group versus the CAV group across all 1-minute segments: 78% vs 4%, 61% vs 0%, 57% vs 0%, and 61% vs 0% for minutes one through four, respectively (P &lt;.01, all).Conclusions:In this simulated model of cardiac arrest, CAV had more accurate ventilation rates and fewer episodes of hyperventilation compared with CV.Nikolla DA, Kramer BJ, Carlson JN. A cross-over trial comparing conventional to compression-adjusted ventilations with metronome-guided compressions. Prehosp Disaster Med. 2019;34(2):220–223
Teaching Computerized Content Analysis for Undergraduate Research Papers
Authors: Wilson Steven L. , Herrera Yoshiko M. 
Published: April 2019

ABSTRACTContent analysis is the process of turning text into data, with either automated or manual techniques, and it provides a feasible and attractive option for undergraduate students to develop and utilize original data. This article presents a cohesive framework for teaching computerized content analysis in undergraduate political science courses. The article discusses examples of how we have taught the techniques in our own classrooms and provides a framework for a content-analysis research assignment. We describe coding, sources of text data available to students, software recommendations appropriate for students, and write-up issues. In the process, we also discuss various learning opportunities that arise from both the strengths and weaknesses of computerized content analysis as a methodological strategy.
(Trans-)planetary sustainability once more – a reply to Losch
Authors: Beisbart Claus 
Published: April 2019

AbstractIn this reply to Losch (2019), I show that, Losch's own judgement notwithstanding, his plea for a concept of (trans-)planetary sustainability does propose conceptual change. I further argue that he has not provided convincing reasons to think that the label ‘planetary’ is superior to ‘trans-planetary’. I summarize my concerns about the plea for introducing the notion of (trans-)planetary sustainability and a related ethics.
A compact quad-band bandpass filter with mixed electric and magnetic coupling
Authors: Zhou Jie , Wang Litian , Wang Zhipeng , Zhang Shengfang , He Ming 
Published: April 2019

AbstractIn this paper, based on a novel multimode stub-loaded resonator, a second-order quad-band bandpass filter (BPF) with mixed electric and magnetic coupling is presented. The electric coupling and magnetic coupling are realized by arranging the parallel coupled lines and the grounded stub, respectively. Eight controllable resonant modes can be simultaneously excited and easily tuned. Eight transmission zeros are created, enhancing the passband selectivity. In addition, the bandwidths can be controlled independently by adjusting the coupling strength. A quad-band BPF centering at 0.67, 1.51, 2.84, 3.58 GHz with respective 3 dB fractional bandwidths of 13.4, 15.6, 9.2, 11.5% is designed, fabricated, and measured. The filter is compact with overall size 0.058λg × 0.13λg. The measured results show a good consistence with the simulated ones.
Placental imprinted gene expression mediates the effects of maternal psychosocial stress during pregnancy on fetal growth
Authors: Lambertini L. , Li Q. , Ma Y. , Zhang W. , Hao K. , Marsit C. , Chen J. , Nomura Y. 
Published: April 2019

AbstractImprinted genes uniquely drive and support fetoplacental growth by controlling the allocation of maternal resources to the fetus and affecting the newborn’s growth. We previously showed that alterations of the placental imprinted gene expression are associated with suboptimal perinatal growth and respond to environmental stimuli including socio-economic determinants. At the same time, maternal psychosocial stress during pregnancy (MPSP) has been shown to affect fetal growth. Here, we set out to test the hypothesis that placental imprinted gene expression mediates the effects of MPSP on fetal growth in a well-characterized birth cohort, the Stress in Pregnancy (SIP) Study. We observed that mothers experiencing high MPSP deliver infants with lower birthweight (P=0.047). Among the 109 imprinted genes tested, we detected panels of placental imprinted gene expression of 23 imprinted genes associated with MPSP and 26 with birthweight. Among these genes, five imprinted genes (CPXM2, glucosidase alpha acid (GAA),GPR1, SH3 and multiple ankyrin repeat domains 2 (SHANK2)andTHSD7A) were common to the two panels. In multivariate analyses, controlling for maternal age and education and gestational age at birth and infant gender, two genes,GAAandSHANK2, each showed a 22% mediation of MPSP on fetal growth. These data provide new insights into the role that imprinted genes play in translating the maternal stress message into a fetoplacental growth pattern.
Predictors and moderators of burden of care and emotional distress in first-episode psychosis caregivers: results from the GET UP pragmatic cluster randomised controlled trial
Authors: Onwumere J. , Bonetto C. , Lasalvia A. , Miglietta E. , Veronese A. , Bellini F. , Imbesi M. , Bebbington P. , Kuipers E , Ruggeri M. ,   The GET UP Group
Published: April 2019

Abstract

Aims
First-episode psychosis (FEP) is a major life event and can have an adverse impact on the diagnosed individual and their families. The importance of intervening early and providing optimal treatments is widely acknowledged. In comparison to patient groups, literature is scarce on identifying treatment predictors and moderators of caregiver outcomes. This study aimed to identify pre-treatment characteristics predicting and/or moderating carer outcomes, based on data from a multi-element psychosocial intervention to FEP patients and carers (GET-UP PIANO trial).

Methods
Carer demography, type of family relationship, patient contact hours, pre-treatment carer burden, patient perceptions of parental caregiving and expressed emotion (EE) were selected, a priori, as potential predictors/moderators of carer burden and emotional distress at 9 months post treatment. Outcomes were analysed separately in mixed-effects random regression models.

Results
Analyses were performed on 260 carers. Only patient perceptions of early maternal criticism predicted reports of lower carer burden at follow-up. However, multiple imputation analysis failed to confirm this result. For treatment moderators: higher levels of carer burden at baseline yielded greater reductions in carer emotional distress at follow-up in the experimental group compared with treatment as usual (TAU). Higher levels of perceived EE moderated greater reductions in carer reports of tension in experimental group, compared with TAU, at follow-up. In younger caregivers (<51 years old), there were greater reductions in levels of worry during the baseline to follow-up period, within the experimental group compared with TAU.

Conclusion
The study failed to identify significant treatment predictors of FEP carer outcomes. However, our preliminary findings suggest that optimal treatment outcomes for carers at first episode might be moderated by younger carer age, and carers reporting higher baseline levels of burden, and where patients perceive higher levels of negative effect from caregivers.
Induced Seismicity Driven by Fluid Diffusion Revealed by a Near‐Field Hydraulic Stimulation Monitoring Array in the Montney Basin, British Columbia
Authors: Yu H. , Harrington R. M. , Liu Y. , Wang B. 
Published: April 2019

AbstractThis study presents observations using new data from a deployment of eight broadband seismometers surrounding a horizontal well pad at distances of ~1–3 km for the period before, during, and after a hydraulic fracturing treatment in the Montney Basin, British Columbia, Canada. We use a multistation‐matched filter detection and double‐difference earthquake relocation to develop a catalog of 350 events associated with hydraulic fracturing stimulation, with magnitudes ranging from −2.8 to 1.8 and estimated catalog completeness of approximately −0.2. The seismicity distribution suggests a statistically significant association with injection, and event migration can be described by a hydraulic diffusivity of ~0.2 m2/s. A comparison between daily seismicity rate and analytical stress evolution inferred from daily injection volumes implies that pore pressure diffusion largely controls earthquake nucleation at distances less than 1 km, whereas poroelastic stress transfer likely dominates at intermediate distances of ~1–4 km at time scales shorter than diffusion. Both mechanisms likely have a limited effect on stress perturbation at distances over 5 km.
Increased Dust Deposition in New Zealand Related to Twentieth Century Australian Land Use
Authors: Brahney Janice , Ballantyne Ashley P. , Vandergoes Marcus , Baisden Troy , Neff Jason C. 
Published: April 2019

AbstractMineral aerosols (dust) generated in the dryland regions of Australia have the potential to reach New Zealand through atmospheric transport. Although a large portion of dust in New Zealand originates in Australia, little is known about how dust deposition has varied over time in New Zealand or what may have caused this variation. We used geochemical dust proxies to examine the recent history of dust deposition to two alpine lakes in Kahurangi National Park, South Island, New Zealand. Geochemical indicators suggest that dust deposition began to increase around 1900, with the greatest deposition rates occurring from ~1920 to ~1990. In subsequent decades, dust deposition rates to New Zealand lakes appear to have declined. This rise and fall of dust deposition recorded in New Zealand lakes is consistent with dust records from the Antarctic Ice Sheet, Eastern Australia, and incidents of low visibility due to dust events recorded at Australian climate stations. The dust deposition rate over time also follows the temporal pattern of land use in south and central Australia over the time scale of the twentieth century suggesting a causal linkage. It is possible, and perhaps likely, that drought cycles also affected both emissions and transport pathways but over shorter time periods this was difficult to discern at the temporal resolution of these lake sediment cores. The increase in dust deposition to the high‐elevation regions of New Zealand likely has implications for the biogeochemistry of alpine lakes in the Tasman Mountains.
A stochastic view on surface inhomogeneity of nanoparticles
Authors: Post R. A. J. , van der Zwaag D. , Bet G. , Wijnands S. P. W. , Albertazzi L. , Meijer E. W. , van der Hofstad R. W. 
Published: April 2019

AbstractThe interactions between and with nanostructures can only be fully understood when the functional group distribution on their surfaces can be quantified accurately. Here we apply a combination of direct stochastic optical reconstruction microscopy (dSTORM) imaging and probabilistic modelling to analyse molecular distributions on spherical nanoparticles. The properties of individual fluorophores are assessed and incorporated into a model for the dSTORM imaging process. Using this tailored model, overcounting artefacts are greatly reduced and the locations of dye labels can be accurately estimated, revealing their spatial distribution. We show that standard chemical protocols for dye attachment lead to inhomogeneous functionalization in the case of ubiquitous polystyrene nanoparticles. Moreover, we demonstrate that stochastic fluctuations result in large variability of the local group density between particles. These results cast doubt on the uniform surface coverage commonly assumed in the creation of amorphous functional nanoparticles and expose a striking difference between the average population and individual nanoparticle coverage.
The simplest construction of single-site catalysts by the synergism of micropore trapping and nitrogen anchoring
Authors: Zhang Zhiqi , Chen Yugang , Zhou Liqi , Chen Chi , Han Zhen , Zhang Bingsen , Wu Qiang , Yang Lijun , Du Lingyu , Bu Yongfeng , Wang Peng , Wang Xizhang , Yang Hui , Hu Zheng 
Published: April 2019

AbstractSingle-site catalysts feature high catalytic activity but their facile construction and durable utilization are highly challenging. Herein, we report a simple impregnation-adsorption method to construct platinum single-site catalysts by synergic micropore trapping and nitrogen anchoring on hierarchical nitrogen-doped carbon nanocages. The optimal catalyst exhibits a record-high electrocatalytic hydrogen evolution performance with low overpotential, high mass activity and long stability, much superior to the platinum-based catalysts to date. Theoretical simulations and experiments reveal that the micropores with edge-nitrogen-dopants favor the formation of isolated platinum atoms by the micropore trapping and nitrogen anchoring of [PtCl6]2-, followed by the spontaneous dechlorination. The platinum-nitrogen bonds are more stable than the platinum-carbon ones in the presence of adsorbed hydrogen atoms, leading to the superior hydrogen evolution stability of platinum single-atoms on nitrogen-doped carbon. This method has been successfully applied to construct the single-site catalysts of other precious metals such as palladium, gold and iridium.
Piezoresponse force microscopy and nanoferroic phenomena
Authors: Gruverman Alexei , Alexe Marin , Meier Dennis 
Published: April 2019

AbstractSince its inception more than 25 years ago, Piezoresponse Force Microscopy (PFM) has become one of the mainstream techniques in the field of nanoferroic materials. This review describes the evolution of PFM from an imaging technique to a set of advanced methods, which have played a critical role in launching new areas of ferroic research, such as multiferroic devices and domain wall nanoelectronics. The paper reviews the impact of advanced PFM modes concerning the discovery and scientific understanding of novel nanoferroic phenomena and discusses challenges associated with the correct interpretation of PFM data. In conclusion, it offers an outlook for future trends and developments in PFM.