bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal path planning using a continuous anisotropic model for navigation on irregular terrains
Authors: Sánchez-Ibáñez J. Ricardo , Pérez-Del-Pulgar Carlos J. , Serón Javier , García-Cerezo Alfonso 
Published: December 2022

AbstractMobile robots usually need to minimize energy when they are traversing uneven terrains. To reach a location of interest, one strategy consists of making the robot follow the path that demands the least possible amount of energy. Yet, its calculation is not trivial with irregular surfaces. Gravity makes the energy consumption of a robot change according to its heading. Such a variation is subject to the terramechanic characteristics of the surface. This paper introduces a cost function that addresses this variation when traversing slopes. This function presents direction-dependency (anisotropic) and returns the cost for all directions (continuous).. Moreover, it is compatible with the Ordered Upwind Method, which allows finding globally optimal paths in a deterministic way. Besides, the segments of these paths are not restricted to the shape of a grid. Finally, this paper also introduces the description and discussion of a simulation experiment. It served to analyse what kinds of terrain motivate the use of anisotropy. The Ordered Upwind Method was executed on a virtual crater with different terrain parameter configurations, using both isotropic (direction-non-dependent) and anisotropic cost functions. The results evince how in certain situations the use of an anisotropic cost function instead of an isotropic one produces a path that reduces the accumulated cost by up to 20%.
First-Principles Calculations of Elastic and Thermodynamic Properties for Multi-component Co-based Superalloys
Authors: Tang Yingchun , Li Wei , Li Changle , Lu Song , Vitos Levente , Pyczak Florian 
Published: December 2022

Abstract
First-principles calculations were performed to investigate the elastic and thermodynamic properties for multi-component Co-based superalloy systems and explored the effect of alloying on stabilizing the γ′ phase. First, the comparisons were carried out for the γ′ phase in Co3(Al,TM) (TM being transition metals) and Ni3Al systems between the present computational results using the EMTO-CPA method and other available DFT calculations as well as experimental data. The lattice parameters, elastic constants, and Debye temperatures are consistent with experimental results and other calculations. The predicted thermodynamic properties, e.g., the Gibbs free energy, excess entropy, and linear thermal expansion coefficient, agree well with CALPHAD results, experimental results, and other available first-principles calculations. A combination of EMTO-CPA method and Debye–Grüneisen model is utilized in this work to ensure that the alloying effect on the stability of the γ′ phase in a multi-component Co-based system is captured efficiently. This could open the path for designing novel multi-component Co-based alloys based on first-principles calculation. To demonstrate this, predictions for the properties of multicomponent systems were undertaken. Our results show that Ni aids in the stabilization of the (CoNi)3(Al, Mo, Nb) phase.

Graphical Abstract
Evaluation of a Processing Route and Microstructural Characteristics for the Development of Ultrafine Bainite in Low-Temperature Ausformed Medium-Carbon Steels
Authors: Kaikkonen Pentti , Somani Mahesh C. , Pohjonen Aarne , Javaheri Vahid , Kömi Jukka 
Published: December 2022

AbstractA combination of physical simulation and laboratory rolling experiments, including thermomechanical rolling and low-temperature ausforming, was conducted for designing a suitable processing route to enable phase transformation from austenite to ultrafine bainite in a medium-carbon steel. Following low-temperature ausforming at 500-550 °C, two different cooling and holding paths were tried in the study: (1) water cooling close to martensite start temperature (300 °C), followed by isothermal holding (route A), and (2) air cooling to 350 °C followed by isothermal holding (route B). For reference, a third sample was directly water-cooled to 300 °C after hot rolling without ausforming treatment, followed by isothermal holding (route C). Field emission scanning electron microscopy and electron backscatter diffraction, as well as x-ray diffraction, were employed for microstructural analysis and correlations with the mechanical properties evaluated in respect of hardness and tensile properties. The low-temperature ausforming and subsequent cooling schedules resulted in the decomposition of austenite into ultrafine bainite and some martensite, while stabilizing a fraction of finely divided, carbon-enriched interlath austenite. Results suggested the development of a novel, multiphase bainite-martensite-austenite microstructure, achieved via low-temperature ausforming and subsequent air-cooling (route B), was beneficial in respect of mechanical properties. Most of the bainitic plates were in the range of 50-200 nm with the occasional presence of coalesced plates as wide as 2000 nm. Despite the differences in the microstructure, the mechanical behavior of non-ausformed samples was not significantly different. The technique paves way for developing medium-carbon nanostructured/ultrafine bainitic steels with high mechanical properties achieved via innovative modification of processing routes including low-temperature ausforming.
Graphical Abstract
Numerical investigation of the influence of casting techniques on fiber orientation distribution in ECC
Authors: Van Chung Nguyen , Tran Thanh Hai , Nguyen Thuc Nhu , Li Jianchun 
Published: December 2022

AbstractEngineered cementitious composites (ECC), also known as bendable concrete, were developed based on engineering the interactions between fibers and cementitious matrix. The orientation of fibers, in this regard, is one of the major factors influencing the ductile behavior of this material. In this study, fiber orientation distributions in ECC beams influenced by different casting techniques are evaluated via numerical modeling of the casting process. Two casting directions and two casting positions of the funnel outlet with beam specimens are modeled using a particle-based smoothed particle hydrodynamics (SPH) method. In this SPH approach, fresh mortar and fiber are discretized by separated mortar and fiber particles, which smoothly interact in the computational domain of SPH. The movement of fiber particles is monitored during the casting simulation. Then, the fiber orientations at different sections of specimens are determined after the fresh ECC stops flowing in the formwork. The simulation results show a significant impact of the casting direction on fiber orientation distributions along the longitudinal wall of beams, which eventually influence the flexural strength of beams. In addition, casting positions show negligible influences on the orientation distribution of fibers in the short ECC beam, except under the pouring position.
Associations of preterm and early-term birth with suspected developmental coordination disorder: a national retrospective cohort study in children aged 3–10 years
Authors: Liu Ming-Xia , Li Hai-Feng , Wu Mei-Qin , Geng Shan-Shan , Ke Li , Lou Bi-Wen , Du Wenchong , Hua Jing 
Published: December 2022

Abstract
Background
This study analyzed the motor development and suspected developmental coordination disorder of very and moderately preterm (< 34+0 gestational age), late preterm (34+0–36+6 gestational week), and early-term (37+0–38+6 gestational week) children compared to their full-term peers with a national population-based sample in China.

Methods
A total of 1673 children (799 girls, 874 boys) aged 3–10 years old were individually assessed with the Movement Assessment Battery for Children-second edition (MABC-2). The association between gestational age and motor performance of children was analyzed using a multilevel regression model.

Results
The global motor performance [β =  – 5.111, 95% confidence interval (CI) =  – 9.200 to – 1.022; P = 0.015] and balance (β =  – 5.182, 95% CI =  – 5.055 to – 1.158; P = 0.003) for very and moderately preterm children aged 3–6 years old were significantly lower than their full-term peers when adjusting for confounders. Late preterm and early-term children showed no difference. Moreover, very and moderately preterm children aged 3–6 years had a higher risk of suspected developmental coordination disorder (DCD) (≤ 5 percentile of MABC-2 score) when adjusting for potential confounders [odds ratio (OR) = 2.931, 95% CI = 1.067–8.054; P = 0.038]. Late preterm and early-term children showed no difference in motor performance from their full-term peers (each P > 0.05).

Conclusions
Our findings have important implications for understanding motor impairment in children born at different gestational ages. Very and moderately preterm preschoolers have an increased risk of DCD, and long-term follow-up should be provided for early detection and intervention.
Literaturreview zu partizipativer Technologieentwicklung in der Behinderten- und Erziehungshilfe im Kontext Sozialer Arbeit
Authors: Mildenberger Tabea , Schmier Alena , Zorn Isabel 
Published: December 2022

ZusammenfassungZiel der Literaturstudie war es herauszufinden, welche wissenschaftlichen Projekte zu partizipativer Technikentwicklung in der Erziehungshilfe und jugendbezogener Behindertenhilfe bereits durchgeführt wurden und wie im wissenschaftlichen Diskurs der Sozialen Arbeit die Thematik partizipativer Technologieentwicklung in Einrichtungen der Jugend- und Behindertenhilfe behandelt wird. Ziel ist auch, die angewendete systematische Recherchestrategie zu beschreiben. Methodisch folgt der systematische Literaturreview einem definierten Korpus der relevanten, überwiegend deutschsprachigen wissenschaftlichen Fachzeitschriften Sozialer Arbeit zwischen 1994 und Mai 2020. Durchsucht wurden jene Fachzeitschriften, die sich mit Themengebieten angrenzend zur Forschungsfrage befassen: die Thematik der Jugend(hilfe), Medien, Technologie oder Digitalisierung. Der systematische Literaturreview benennt beforschte Felder und Themen. Die Ergebnisdarstellung erfolgt dabei kategorienbasiert entlang den Forschungslinien Partizipative Forschung, Assistenztechnologien, Handlungsanweisungen für Medienkompetenz von Jugendlichen und Digitalisierung in der Sozialen Arbeit. Der Beitrag zeigt Desiderata für zukünftige Forschung zu partizipativer Technikentwicklung in der Sozialen Arbeit auf.
Extracellular histones trigger oxidative stress-dependent induction of the NF-kB/CAM pathway via TLR4 in endothelial cells
Authors: Pérez-Cremades Daniel , Bueno-Betí Carlos , García-Giménez José Luis , Ibañez-Cabellos José Santiago , Pallardó Federico V. , Hermenegildo Carlos , Novella Susana 
Published: December 2022

Abstract
Extracellular histones have been reported to aggravate different pathophysiological processes by increasing vascular permeability, coagulopathy, and inflammation. In the present study, we elucidate how extracellular histones (10–100 µg/mL) concentration dependently increase cytosolic reactive oxygen species (ROS) production using human umbilical vein endothelial cells (HUVECs). Furthermore, we identify cyclooxygenase (COX) and NADPH oxidase (NOX) activity as sources of ROS production in extracellular histone-treated HUVEC. This COX/NOX-mediated ROS production is also involved in enhanced NF-kB activity and cell adhesion molecules (VCAM1 and ICAM1) expression in histone-treated HUVEC. Finally, by using different toll-like receptor (TLR) antagonists, we demonstrate the role of TLR4 in CAMs overexpression triggered by extracellular histones in endothelial cells. In conclusion, our data suggest that through TLR4 signaling, extracellular histones increase endothelial cell activation, a mechanism involving increased COX- and NOX-mediated ROS. These findings increase our understanding on how extracellular histones enhance systemic inflammatory responses in diseases in which histone release occurs as part of the pathological processes.
Resveratrol ameliorates the behavioural and molecular changes in rats exposed to uninephrectomy: role of hippocampal SIRT1, BDNF and AChE
Authors: Basta Marianne , Saleh Samar. R. , Aly Rania. G. , Dief Abeer. E. 
Published: December 2022

AbstractSubtle memory and cognitive changes may occur in uninephrectomized (Unix) patients long before the development of chronic kidney disease, such changes may be unnoticed. The dietary polyphenol, Resveratrol, displayed various neuroprotective effects, its role in chronic kidney disease is an area of intense studies. This work was designed to investigate the behavioural and molecular changes that may occur following 7 months of Unix in rats, and to determine whether Resveratrol intake can improve such pathology. Male Wistar rats were divided into three groups: sham operated, Unix and Unix group treated with Resveratrol (20 mg/kg/day). Rats were subjected to series of behavioural testing, different biochemical parameters along with RT-PCR and immunohistochemistry of the hippocampal tissue to track the development of functional or structural brain changes. Anxiety behaviour and reduced spatial memory performance were observed in rats 7 months post-nephrectomy; these deficits were remarkably reversed with Resveratrol. Among the species typical behaviour, burrowing was assessed; it showed significant impairment post-nephrectomy. Resveratrol intake was almost able to increase the burrowing behaviour. Decreased SIRT1 in immune-stained sections, oxidative stress, inflammatory changes, and increased AChE activity in hippocampal homogenates were found in Unix rats, and Resveratrol once more was capable to reverse such pathological changes. This work has investigated the occurrence of behavioural and structural brain changes 7 months following Unix and underlined the importance of Resveratrol to counterbalance the behavioural impairment, biochemical and brain pathological changes after uninephrectomy. These findings may raise the possible protective effects of Resveratrol intake in decreased kidney function.
Diagnostic Relations for the Intercept Parameter of Exponential Raindrop Size Distribution According to Rain Types Derived from Disdrometer Data and Their Impacts on Precipitation Prediction
Authors: Lee Joohyun , Jin Han-Gyul , Baik Jong-Jin 
Published: December 2022

AbstractThe raindrop size distribution observed from ground-based or airborne disdrometers has been widely used to understand the characteristics of clouds and precipitation. However, its variability needs to be studied further and properly considered for improving precipitation prediction. In this study, using disdrometer data, the diagnostic relations for the intercept parameter of the exponential raindrop size distribution N0 are derived for different rain types and the impacts of the diagnostic relations on precipitation prediction are examined. The disdrometer data observed at four sites in South Korea show spatiotemporal variations of N0. Three different derivation methods proposed by previous studies are used to derive the diagnostic relations, and the diagnostic relation that best reproduces the observed N0 is selected. The diagnostic relation is implemented into the WRF single-moment 6-class microphysics (WSM6) scheme, and its impacts are investigated through the simulations of summertime precipitation events in South Korea. Compared to the simulation using the original WSM6 scheme (WSM6-O) where a constant N0 is used, the simulation where N0 is diagnosed by the diagnostic relation using the rainwater content at the lowest level (WSM6-L) yields better precipitation prediction. The WSM6-L simulation represents the variability of N0. Also, the WSM6-L simulation predicts N0 that is on average smaller than the prescribed value in the WSM6-O simulation, agreeing with the observation to some extent. The smaller N0 in the WSM6-L simulation decreases the rainwater production by the accretion of cloud water and the melting of ice hydrometeors, decreasing the rainwater mixing ratio.
Risk-aversion optimal hedging scenarios during droughts
Authors: Shiau Jenq-Tzong 
Published: December 2022

AbstractThe primary purpose of a water supply reservoir is to regular highly fluctuating streamflow for providing reliable water supplies. Reducing water shortage risk for impending droughts is a challenge task in real-time reservoir operation due to future inflow uncertainty. The main aim of this study is to propose risk-aversion optimal hedging scenarios during droughts, which is achieved by a two-stage approach. The water shortage probabilities of future lead times are analytically estimated first, then follows an optimization framework that simultaneously minimizing water shortage probabilities of future lead times and sustaining long-term water supply reliability. With an illustration application of the Nanhua Reservoir located in southern Taiwan, the results indicate that the proposed optimization framework provides an efficient hedging to reduce future water shortage probabilities and mitigate severe water shortages in real-time operation. The proposed optimal hedging scenarios outperforms the rule-curve-based current operation. Further improvements are noted for the time-varying rationing coefficient scenarios than the constant-coefficient scenario and the most favorable scenario is the scenario with the highest time-varying frequency. Using the storage to trigger hedging associated with estimated future lead-time water shortage probabilities as the objective functions, the proposed optimal hedging scenarios are not only risk aversion but also executable in real-time operation during droughts.
A class of diffusive delayed viral infection models with general incidence function and cellular proliferation
Authors: Nangue Alexis , Tacteu Fokam Willy Armel 
Published: December 2022

AbstractWe propose and analyze a new class of three dimensional space models that describes infectious diseases caused by viruses such as hepatitis B virus (HBV) and hepatitis C virus (HCV). This work constructs a Reaction–Diffusion-Ordinary Differential Equation model of virus dynamics, including absorption effect, cell proliferation, time delay, and a generalized incidence rate function. By constructing suitable Lyapunov functionals, we show that the model has threshold dynamics: if the basic reproduction number $$\mathcal {R}_{0}(\tau ) \le 1 $$

R
0

(
τ
)

≤
1

, then the uninfected equilibrium is globally asymptotically stable, whereas if $$\mathcal {R}_{0}(\tau ) > 1$$

R
0

(
τ
)

>
1

, and under certain conditions, the infected equilibrium is globally asymptotically stable. This precedes a careful study of local asymptotic stability. We pay particular attention to prove boundedness, positivity, existence and uniqueness of the solution to the obtained initial and boundary value problem. Finally, we perform some numerical simulations to illustrate the theoretical results obtained in one-dimensional space. Our results improve and generalize some known results in the framework of virus dynamics.
Uterine Fibroids, Perceived Stress, and Menstrual Distress: a Key Role of Heavy Menstrual Bleeding
Authors: Vannuccini Silvia , Clemenza Sara , Cassioli Emanuele , Rossi Eleonora , Castellini Giovanni , Ricca Valdo , Petraglia Felice 
Published: December 2022

Abstract
Uterine fibroids (UFs) are the most common benign tumors in women of reproductive age, frequently associated with pain symptoms and heavy menstrual bleeding (HMB), leading to impaired quality of life. Thus, the aim of the study was to evaluate the global perception of stress and the menstrual distress in patients with UFs. A cross-sectional observational study was conducted on a group (n = 69) of fertile age women with UFs compared to age-matched controls, by administering two questionnaires: the perceived stress scale (PSS) and the Menstrual Distress Questionnaire (MEDI-Q). The PSS, MEDI-Q Total Score and 3 subscales—menstrual symptoms (MS), menstrual symptoms distress (MSD), and menstrual specificity index (MESI)—were evaluated. Patients with UFs showed higher PSS than controls (18.5 ± 5.0 vs. 13.8 ± 5.0, p < 0.001) and PSS values were very high in those with HMB, severe dysmenorrhea, and impaired social and working life. Patients with UFs also showed significantly higher score for MEDI-Q Total Score (16.51 ± 12.99 vs. 10.86 ± 12.36) (p < 0.01) as well as for the subscales MSD (2.54 ± 1.07 vs. 1.57 ± 0.98) (p < 0.001) and MESI (0.76 ± 0.30 vs 0.60 ± 0.39) (p < 0.05). The menstrual distress was associated to being uncomfortable about uterine bleeding; in fact, MEDI-Q Total Score was significantly higher in women with HMB compared to those with moderate/normal bleeding. UF characteristics (number, type, and size) did not correlate with perceived stress or menstrual distress. In conclusion, women with UFs have significantly higher levels of perceived stress and menstrual distress than controls and HMB plays a major role in determining such conditions.
Closing the concern-action gap through relational climate conversations: insights from US climate activists
Authors: Fine Julia Coombs 
Published: December 2022

AbstractSeveral studies have found that relational climate conversations can be an effective method of increasing conversational participants’ concern about the climate crisis and encouraging them to take collective action. However, little work has yet examined how such conversations are practiced by climate activists, a group with expertise in relational organizing. Drawing on surveys and semi-structured interviews with climate activists across the USA, this analysis finds that activists frequently have climate conversations with friends and family, most of whom are politically progressive and somewhat to very concerned about the climate crisis. These findings might seem to suggest that climate activists only have climate conversations with like-minded others, producing an echo chamber effect that could entrench the political polarization of the issue. However, climate activists report strategic reasons for choosing like-minded audiences, such as personal response efficacy. Additionally, they report that one of their primary conversational goals is to move people who are already concerned about the climate crisis to take collective action in accordance with values of climate justice. The results identify obstacles to collective climate action even among concerned audiences and suggest that relational climate conversations can be useful in overcoming these obstacles.Graphical Abstract
Cryogenic ultrasonic vibration assisted turning to texturize AZ31 magnesium alloy surfaces
Authors: Bertolini R. , Ghiotti A. , Bruschi S. 
Published: December 2022

AbstractMagnesium alloys are increasingly used in the biomedical field thanks to their biocompatibility. However, poor corrosion resistance greatly limits their applications. Coating the devices is known to represent the most efficient way to increase the corrosion performances of magnesium alloys, but it requires specific surface preparation of the metal substrate. In the present paper, a hybrid machining technology, namely cryogenic–ultrasonic-assisted turning, is applied to generate magnesium alloy texturized surfaces with enhanced surface integrity characteristics. Results showed that the application of liquid nitrogen led to a harder and more complex surface texture than in the case of ultrasonic-assisted turning under dry conditions.