bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prediction of mechanical properties and hardness of friction stir welding of Al 5083/pure Cu using ANN, ICA and PSO model
Authors: Tagimalek Hadi , Maraki Mohammad Reza , Mahmoodi Masoud , Moghaddam Hossein Kardan , Farzad-Rik Salar 
Published: March 2022

AbstractThe effect of parameters involved in prediction of mechanical properties of Friction Stir Welding have been investigated in this study through modeling. For this purpose, the friction stir welding on both sheets of 5083 Aluminum (Al5083) and pure Copper (Cu) was experimentally conducted at first level. Three factors of Rotation Speed (RPM), Traverse Speed (mm/min) and the Tool’s pin angle was examined. During the tentative test, many experiments were not satisfactorily performed. Thanks to a more rigorous study hypothesis, proper samples were obtained by changing the geometry of different tools. In order to overcome the softness of aluminum sheets and the rise of shoulder diameter, and also to avoid the vertical instability of the sheet, shortening the pin’s length was suggested. In this paper, the Full Factorial method has been employed to evaluate the result of Artificial Neural Networks (ANN), Imperialist Competitive Algorithm, Particle Swarm Optimization, and also the effects of input parameters of the process on output parameters. Moreover, Al5083 and Cu joining sheets were analyzed. Micro-hardness and tensile tests have been based on the process’ input parameters to obtain mechanical properties. The function of ANN model demonstrates that it can estimate the number of mechanical properties with an adequate precision. Using the evaluation factors of mechanical properties and micro-hardness and also a R2 ~ 0.943 analysis, the optimum parameters of Al5083 and Cu joining sheets can be anticipated. The rotation speed of 1150 rpm, traverse speed of 40 mm/min, and pin angle of 2° are the optimum conditions based on the average review of analyses. These optimum conditions led to improve the maximum tensile force up to 15 ~ 21%.
Passive sampling as an alternative strategy to monitor metals and PAHs trends at an upstream and rural catchment: a French case study
Authors: Guigues Nathalie , Lardy-Fontan Sophie , Villeneuve Aurélie , Mansuit Philippe , Welsch Sandra , Lalere Béatrice 
Published: March 2022

AbstractThe study presents an alternative strategy to conventional spot sampling for monitoring metals and polycyclic aromatic hydrocarbons (PAHs) at an upstream, rural and karstic catchment in the north eastern part of France, in order to get insight into their spatial and temporal variability. Passive samplers, as diffusive gradients in thin films (DGT) and semipermeable membrane device (SPMD), are monthly deployed from August 2012 to March 2016 at five of the catchment monitoring stations located on the Saulx and Ornain Rivers. An improvement of the frequency of quantification (by a factor 2 to 8, depending on the targeted compound) is observed allowing us to better identify spatial and temporal variability. For instance, the upstream monitoring station on the Saulx River is characterized by high concentrations of Ni and Mn whereas the upstream monitoring station on the Ornain River is enriched in Cu and Zn. Furthermore, five metals (Al, Fe, Mn, Ni, Zn) and three PAHs (fluoranthene, pyrene and chrysene) show significant variations with water levels when grouped in three categories (low, medium and high water levels) in relation with hydrological and climatic patterns. This study leads to a more accurate assessment of the background pollution in metals and PAHs within surface waters than when based on spot sampling data.
Mycotoxin contamination of maize (Zea mays L.) samples in Hungary, 2012–2017
Authors: Mesterházy Á. , Szieberth D. , Szabó B. , Berényi A. , Tóth B. 
Published: March 2022

AbstractMycotoxin contamination of maize often raises risks for human and animal health. The most frequently detected mycotoxins in maize are trichothecenes, fumonisins, and aflatoxin. A total number of 17,011 maize samples were tested by SGS for their mycotoxin content between 2012 and 2017. The toxin results clearly show that the southern areas of the country had higher levels of toxin contamination than the average. According to the dataset, aflatoxin contamination has become regular but the appearance of fumonisins was also more frequent. Deoxynivalenol toxin accumulation in crops can also reach dangerous levels under favorable ecological conditions. The fluctuation between years and regisons is decisively shaped by the weather conditions. However, the two pathogens with less virulence (Fusarium verticillioidesandAspergillus flavus) must be taken into account and the contribution of insect pests. 72.63% of the total fumonisin concentration was defined as fumonisin B1, 20.34% as fumonisin B2, and 7.03% as fumonisin B3. The correlations between the three fumonisins analogs were higly significant (P = 0.001), and correlation coefficient varied between 0.961 and 0.998 across the six years of evaluation. This is the first complex evaluation of deoxynivalenol, fumonisin, and aflatoxin contamination of maize samples in Hungary.
Epigenetic regulation of thermomorphogenesis in Arabidopsis thaliana
Authors: Hou Yifeng , Yan Yan , Cao Xiaofeng 
Published: March 2022

AbstractTemperature is a key factor in determining plant growth and development, geographical distribution, and seasonal behavior. Plants accurately sense subtle changes in ambient temperature and alter their growth and development accordingly to improve their chances of survival and successful propagation. Thermomorphogenesis encompasses a variety of morphological changes that help plants acclimate to warm environmental temperatures. Revealing the molecular mechanism of thermomorphogenesis is important for breeding thermo-tolerant crops and ensuring food security under global climate change. Plant adaptation to elevated ambient temperature is regulated by multiple signaling pathways and epigenetic mechanisms such as histone modifications, histone variants, and non-coding RNAs. In this review, we summarize recent advances in the mechanism of epigenetic regulation during thermomorphogenesis with a focus on the model plant Arabidopsis thaliana and briefly discuss future prospects for this field.
A text mining approach for CSR communication: an explorative analysis of energy firms on Twitter in the post-pandemic era
Authors: Mazza Rocco , Zavarrone Emma , Olivieri Mirko , Corsaro Daniela 
Published: March 2022

AbstractThe rapid diffusion of the Covid-19 worldwide has accelerated the need for companies to address the sustainability issue at different levels, as nowadays the attention of stakeholders with respect to this theme has grown considerably. As a result, companies had to set up CSR communication strategies to build and strengthen their legitimacy and reputation. Among the communication channels to convey messages of firms’ CSR initiatives, social media are becoming increasingly important and, particularly, Twitter is the social media platform where more CSR-related content is generated. By adopting the theoretical lens of constitutive communication of organization, the aim of this paper is to investigate with a textual approach how the CSR communication in the energy sector has evolved in the post Covid-19 scenario. Specifically, our attention will be focus on: (1) the exploratory analysis based on the hashtags; (2) the identification of CSR communication topics and (3) the proposal of topics network in order to discover subgroups of topics. Findings of this research show that the CSR communication on Twitter has undergone changes compared to the pre Covid-19 era. Particularly, we identified 11 CSR related-topics which, as the proposed topic network demonstrates, are interconnected. On the one hand, our results corroborate previous research regarding some CSR-related issues; on the other hand, we identified some topics such as safety, people and work which have exploded in Twitter conversations in the post Covid-19 scenario. Finally, this study provides managerial implications for professionals dealing with CSR communication, digital communication and social media marketing activities.
An ephemerally self-exciting point process
Authors: Daw Andrew , Pender Jamol 
Published: March 2022

AbstractAcross a wide variety of applications, the self-exciting Hawkes process has been used to model phenomena in which the history of events influences future occurrences. However, there may be many situations in which the past events only influence the future as long as they remain active. For example, a person spreads a contagious disease only as long as they are contagious. In this paper, we define a novel generalization of the Hawkes process that we call theephemerally self-exciting process. In this new stochastic process, the excitement from one arrival lasts for a randomly drawn activity duration, hence the ephemerality. Our study includes exploration of the process itself as well as connections to well-known stochastic models such as branching processes, random walks, epidemics, preferential attachment, and Bayesian mixture models. Furthermore, we prove a batch scaling construction of general, marked Hawkes processes from a general ephemerally self-exciting model, and this novel limit theorem both provides insight into the Hawkes process and motivates the model contained herein as an attractive self-exciting process in its own right.
Risk Reduction Education to Prevent Preschool Children’s Home Accidents: A Pilot Study
Authors: Altundağ Sebahat , Körükçü Özlem 
Published: March 2022

Abstract

Objective:
Preschool-age children experience many home accidents, and school nurses play a role in preventing these accidents.

Methods:
Accordingly, this study aimed to evaluate the effectiveness of training preschool-age children through an imagined hide-and-seek game using a model home environment, in cases that may pose an accident risk. This pretest–posttest control-group study was conducted between March and June 2019. In total, 72 preschool students were included in the study. The study group’s education through the model home environment and game was assessed using the Determination of Home Environment Risks Form.

Results:
The post-education mean accident risk scores of the children in the study group increased in the kitchen (pre-education: 4.89 ± 3.258; post-education: 9.56 ± 3.549), children’s room (pre-education: 6.17 ± 3.776; post-education: 8.56 ± 3.722), and garden (pre-education: 4.39 ± 2.697; post-education: 6.72 ± 2.953). In the study group, the mean scores of children for recognizing the circumstances that pose a risk of accident in the home environment were determined to increase significantly (P < 0.001). The corresponding scores of the children in the control group did not change in the kitchen (pre-education: 3.89 ± 2.025; post-education: 3.44 ± 2.006), children’s room (pre-education: 3.72 ± 1.667; post-education: 3.50 ± 2.158), or garden (pre-education: 2.83 ± 1.813; post-education: 2.17 ± 2.049).

Conclusions:
The new techniques, which will help children learn while having fun, should be integrated into preschool children’s education programs to reduce home accidents.
Evidence for stages of landscape evolution in Central Mexico during the late Quaternary from paleosol-pedosediment sequences
Authors: Sycheva Svetlana A. , Pogosyan Lilit , Sedov Sergey , Solleiro-Rebolledo Elizabeth , Golyeva Alexandra A. , Barceinas-Cruz Hermenegildo , Abrosimov Konstantin N. , Romanenko Konstantin A. 
Published: March 2022

AbstractPaleosols interbedded with pyroclastic deposits have been proven to be an important paleoenvironmental proxy for the late Quaternary in Central Mexico. We studied a key upland section and several profiles on the slopes and lowlands of the Tlaxcala Block, assuming that the topographic variability of the soil-sedimentary mantle contains the complete record of the landscape history. The upland section included three paleosols separated by tepetates (compact volcanic pedosediments) and reflected a general trend of environmental evolution during the last 40 ka. Particle-size distribution, bulk chemical composition, magnetic characteristics, computed tomography, and micromorphological observations demonstrated a strong seasonality of paleoclimate at the end of MIS3, followed by cool wet conditions during the last glacial maximum, subsequent warming at the beginning of the Holocene, and drying during the last 3 ka. It was shown that tepetates had well-developed pedogenetic features that contribute to the paleosol record. The studied slope and lowland profiles reflected the main phases of geomorphic activity in the terminal Pleistocene and the early Holocene. These phases are linked to paleoclimate fluctuations in Central Mexico at the end of the last glaciation.
ON THE DIVISIBILITY OF SUMS INVOLVING APÉRY-LIKE POLYNOMIALS
Authors: YANG SHENG , LIU JI-CAI 
Published: March 2022

AbstractWe prove a divisibility result on sums involving the Apéry-like polynomials
$$ \begin{align*} V_n(x)=\sum_{k=0}^n {n\choose k}{n+k\choose k}{x\choose k}{x+k\choose k}, \end{align*} $$
which confirms a conjectural congruence of Z.-H. Sun. Our proof relies on some combinatorial identities and transformation formulae.
A NEW CHARACTERISATION FOR QUARTIC RESIDUACITY OF
Authors: HUANG CHAO , PAN HAO 
Published: March 2022

AbstractLet p be a prime with
$p\equiv 1\pmod {4}$
. Gauss first proved that
$2$
is a quartic residue modulo p if and only if
$p=x^2+64y^2$
for some
$x,y\in \Bbb Z$
and various expressions for the quartic residue symbol
$(\frac {2}{p})_4$
are known. We give a new characterisation via a permutation, the sign of which is determined by
$(\frac {2}{p})_4$
. The permutation is induced by the rule
$x \mapsto y-x$
on the
$(p-1)/4$
solutions
$(x,y)$
to
$x^2+y^2\equiv 0 \pmod {p}$
satisfying
$1\leq x < y \leq (p-1)/2$
.
CALLIMACHUS’ OTHER TELCHINES: AETIA FR. 1, FR. 75 AND THE HYMN TO DELOS
Authors: Boychenko Leanna 
Published: March 2022

AbstractThe Telchines, magical craftsmen and wizards, are best known for their criticism of Callimachus’ poetry in the prologue to the Aetia. The other two appearances of the Telchines are also in programmatic passages in Callimachus’ extant works. In the Hymn to Delos (30–3), the narrator asks an aporetic question about the theme of his song. There, the Telchines are the makers of the trident used to form every island but Delos, highlighting her singular status as uniquely created without force (30–3). In Aet. fr. 75, the Telchines appear in Xenomedes’ history of Ceos. There, Callimachus explicitly names one source for his material, but omits direct citation of equally important sources, namely Pindar and Bacchylides, while still alluding to their songs. This article examines verbal and thematic parallels among these three passages and argues that Callimachus uses the Telchines not only to link the passages but also to comment on his authorial process, his use of sources and his poetic programme.
Roles of domain-general auditory processing in spoken second-language vocabulary attainment in adulthood
Authors: Saito Kazuya , Macmillan Konstantinos , Kroeger Sascha , Magne Viktoria , Takizawa Kotaro , Kachlicka Magdalena , Tierney Adam 
Published: March 2022

AbstractRecently, scholars have begun to explore the hypothesis that individual differences in domain-general auditory perception, which has been identified as an anchor of L1 acquisition, could explain some variance in postpubertal L2 learners’ segmental and suprasegmental learning in immersive settings. The current study set out to examine the generalizability of the topic to the acquisition of higher-level linguistic production skills—that is the appropriate use of diverse, rich, and abstract vocabulary. The speech of 100 Polish-English bilinguals was elicited using an interview task, submitted to corpus-/rater-based linguistic analyses, and linked to their ability to discriminate sounds based on individual acoustic dimensions (pitch, duration, and amplitude). According to the results, those who attained more advanced L2 lexical proficiency demonstrated not only more relevant experience (extensive immersion and earlier age of arrival), but also more precise auditory perception ability.
The effects of adult children's gender composition on the care type and care network of ageing parents
Authors: Batur Zeynep Zümer , Vergauwen Jorik , Mortelmans Dimitri 
Published: March 2022

AbstractAlthough the literature on informal care-giving for older parents shows that daughters have a higher tendency to provide care compared with sons, only a few studies have focused on the gender composition of all children or parents’ entire range of care options. Our study examines the effect of children's gender composition on informal and formal care types, as well as the informal care network. Using data from the 2015 Survey of Health, Ageing and Retirement in Europe (N = 40,312), we found that parents with daughters tended to use less formal care because daughters take on additional informal care-giving responsibilities. Daughters were the main care-givers among parents’ informal care networks. Further analysis indicated that daughters-in-law play an important role in the care-giving process when parents have only sons. We concluded that the presence of a daughter among the children reduces the use of formal care. The results indicated that children's gender composition is an important factor in explaining the allocation of informal care to parents.
Key learnings from Institute for Clinical and Economic Review’s real-world evidence reassessment pilot
Authors: Jaksa Ashley , Bloudek Lisa , Carlson Josh J. , Shah Kanya , Chen Yilin , Patrick Amanda R. , McKenna Avery , Campbell Jon D. 
Published: March 2022

Abstract
Health technology assessment (HTA) agencies are considering adopting a lifecycle approach to assessments to address uncertainties in the evidence base at launch and to revisit the clinical and economic value of therapies in a dynamic clinical landscape. For reassessments of therapies post launch, HTA agencies are looking to real-world evidence (RWE) to enhance the clinical and economic evidence base, though challenges and concerns in using RWE in decision-making exists. Stakeholders are embarking on demonstration projects to address the challenges and concerns and to further define when and how RWE can be used in HTA decision making. The Institute for Clinical and Economic Review piloted a 24-month observational RWE reassessment. Key learnings from this pilot include identifying the benefits and challenges with using RWE in reassessments and considerations on prioritizing and selecting topics relevant for RWE updates.
Eight-year trajectories of behavior problems and resilience in children exposed to early-life intimate partner violence: The overlapping and distinct effects of individual factors, maternal characteristics, and early intervention
Authors: Galano Maria M. , Stein Sara F. , Clark Hannah M. , Grogan-Kaylor Andrew , Graham-Bermann Sandra A. 
Published: March 2022

AbstractChildhood exposure to intimate partner violence (IPV) can have lasting effects on well-being. Children also display resilience following IPV exposure. Yet, little research has prospectively followed changes in both maladaptive and adaptive outcomes in children who experience IPV in early life. The goal of the current study was to investigate how child factors (irritability), trauma history (severity of IPV exposure), maternal factors (mental health, parenting), and early intervention relate to trajectories of behavior problems (internalizing and externalizing problems) and resilience (prosocial behavior, emotion regulation), over 8 years. One hundred twenty mother-child dyads participated in a community-based randomized controlled trial of an intervention for IPV-exposed children and their mothers. Families completed follow-up assessments 6–8 months (N= 71) and 6–8 years (N= 68) later. Although intention-to-treat analyses did not reveal significant intervention effects, per-protocol analyses suggested that participants receiving an effective dose (eight sessions) of the treatment had fewer internalizing problems over time. Child irritability and maternal parenting were associated with both behavior problems and resilience. Maternal mental health was uniquely associated with child behavior problems, whereas maternal positive parenting was uniquely associated with child resilience. Results support the need for a dyadic perspective on child adjustment following IPV exposure.
ValAsp: A Tool for Data Validation in Answer Set Programming
Authors: ALVIANO MARIO , DODARO CARMINE , ZAMAYLA ARNEL 
Published: March 2022

AbstractThe development of complex software requires tools promoting fail-fast approaches, so that bugs and unexpected behavior can be quickly identified and fixed. Tools for data validation may save the day of computer programmers. In fact, processing invalid data is a waste of resources at best, and a drama at worst if the problem remains unnoticed and wrong results are used for business. Answer Set Programming (ASP) is not an exception, but the quest for better and better performance resulted in systems that essentially do not validate data. Even under the simplistic assumption that input/output data are eventually validated by external tools, invalid data may appear in other portions of the program, and go undetected until some other module of the designed software suddenly breaks. This paper formalizes the problem of data validation for ASP programs, introduces a language to specify data validation, and presents valasp, a tool to inject data validation in ordinary programs. The proposed approach promotes fail-fast techniques at coding time without imposing any lag on the deployed system if data are pretended to be valid. Validation can be specified in terms of statements using YAML, ASP and Python. Additionally, the proposed approach opens the possibility to use ASP for validating data of imperative programming languages.
Computer simulations of biotic chiral selection scenarios
Authors: Longo Savino , Mundo Carmela , Micca Longo Gaia 
Published: March 2022

AbstractThe biotic scenario of the selection of biological homochirality is one of the most interesting applications of computer modelling to astrobiology. These scenarios have been studied for more than 70 years, yet there are plenty of studies to better assess them, in particular in the development of models of the selective extinction process. In this paper, we review former studies performed by biology-grounded models of this process and present a new class of computer programs: they further demonstrate the complexity of the selective extinction dynamics and the role played into it by non-trivial chemical-physical concepts. Indeed, the results display large and persistent differences between the populations of the two different chiral types, made possible by the freedom of individual populations to fluctuate wildly while the total population is stabilized by the limited availability of chemical energy. Such strong differences ultimately lead to the selective extinction of one of the two types. This way, computer simulations provide increasing evidence in favour of the biotic scenario.