bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mössbauer study of thermal behavior of CL20ES and CL50WS steel powders used in selective laser melting
Authors: Ivanova Tatiana , Kořenek Michal , Mashlan Miroslav , Svačinová Veronika 
Published: May 2023

AbstractThe phase and structural changes of steel powders CL20ES and CL50WS used in additive manufacturing were studied by Mössbauer spectroscopy and X-ray diffraction. Investigated powders were annealed in the temperature range 500 °C–1100 °C in oxidizing and inert atmosphere. Annealing in an oxidizing atmosphere resulted in the formation of different iron oxides in both steel powders depending on the annealing temperature. In addition, a phase change of ferrite to austenite was identified when annealing CL50WS steel powder in an oxidizing atmosphere. This phase change was confirmed by annealing given CL50WS steel powder in an inert nitrogen atmosphere. The transformation of austenite to ferrite phase was observed only, when annealing CL20ES steel powder in an inert atmosphere at 1100 °C. Morphological changes on the surface of the spherical powders were observed by scanning electron microscopy.
Consensus decision-making in artificial swarms via entropy-based local negotiation and preference updating
Authors: Zheng Chuanqi , Lee Kiju 
Published: May 2023

AbstractThis paper presents an entropy-based consensus algorithm for a swarm of artificial agents with limited sensing, communication, and processing capabilities. Each agent is modeled as a probabilistic finite state machine with a preference for a finite number of options defined as a probability distribution. The most preferred option, called exhibited decision, determines the agent’s state. The state transition is governed by internally updating this preference based on the states of neighboring agents and their entropy-based levels of certainty. Swarm agents continuously update their preferences by exchanging the exhibited decisions and the certainty values among the locally connected neighbors, leading to consensus towards an agreed-upon decision. The presented method is evaluated for its scalability over the swarm size and the number of options and its reliability under different conditions. Adopting classical best-of-N target selection scenarios, the algorithm is compared with three existing methods, the majority rule, frequency-based method, and k-unanimity method. The evaluation results show that the entropy-based method is reliable and efficient in these consensus problems.
Isolation, characterization, and application of lytic bacteriophages for controlling Enterobacter cloacae complex (ECC) in pasteurized milk and yogurt
Authors: Nasr-Eldin Mohamed A. , Gamal Eman , Hazza Mahmoud , Abo-Elmaaty Sabah A. 
Published: May 2023

AbstractReducing bacterial pathogen contamination not only improves overall global public health but also diminishes food waste and loss. The use of lytic bacteriophages (phages) that infect and kill bacteria could be a beneficial tool for suppressing bacterial growth during dairy products storage time. Four Enterobacter cloacae (E. cloacae) complex isolates which were previously isolated from contaminated dairy products were used to identify lytic phages in wastewater. Phages specific to multi-drug resistant (MDR) E. cloacae complex 6AS1 were isolated from local sewage. Two novel phages vB_EclM-EP1 and vB_EclM-EP2 were identified as myoviral particles and have double-stranded DNA genome. Their host range and lytic capabilities were detected using spot test and efficiency of plating (EOP) against several bacterial isolates. The phages had a latent period of 30 min, and a large burst size of about 100 and 142 PFU/cell for vB_EclM-EP1 and vB_EclM-EP2, respectively. Both phages were viable at pH ranging 5–9 and stable at 70 °C for 60 min. The individual phages and their cocktail preparations (vB_EclM-EP1 and vB_EclM-EP2) reduced and inhibited the growth of E. cloacae complex 6AS1 during challenge test in milk and yogurt samples. These results indicate that the E. cloacae complex-specific phages (vB_EclM-EP1 and vB_EclM-EP2) have a potential application as microbicidal agents in packaged milk and milk derivatives during storage time. In addition, our environment is a rich sources of lytic phages which have potential use in eliminating multidrug-resistant isolates in food industry as well as in biocontrol.
Characterising the Long-Term Language Impairments of Children Following Cerebellar Tumour Surgery by Extracting Psycholinguistic Properties from Spontaneous Language
Authors: Svaldi Cheyenne , Paquier Philippe , Keulen Stefanie , van Elp Henrieke , Catsman-Berrevoets Coriene , Kingma Annet , Jonkers Roel , Kohnen Saskia , de Aguiar Vânia 
Published: May 2023

AbstractFollowing cerebellar tumour surgery, children may suffer impairments of spontaneous language. Yet, the language processing deficits underlying these impairments are poorly understood. This study is the first to try to identify these deficits for four levels of language processing in cerebellar tumour survivors. The spontaneous language of twelve patients who underwent cerebellar tumour surgery (age range 3–24 years) was compared against his or her controls using individual case statistics. A distinction was made between patients who experienced postoperative cerebellar mutism syndrome (pCMS) and those who did not. Time since surgery ranged between 11 months and 12;3 years. In order to identify the impaired language processing levels at each processing level (i.e., lexical, semantic, phonological and/or morphosyntactic) nouns and verbs produced in the spontaneous language samples were rated for psycholinguistic variables (e.g., concreteness). Standard spontaneous language measures (e.g., type-token ratio) were calculated as well. First, inter-individual heterogeneity was observed in the spontaneous language outcomes in both groups. Nine out of twelve patients showed language processing deficits three of whom were diagnosed with pCMS. Results implied impairments across all levels of language processing. In the pCMS-group, the impairments observed were predominantly morphosyntactic and semantic, but the variability in nature of the spontaneous language impairments was larger in the non-pCMS-group. Patients treated with cerebellar tumour surgery may show long-term spontaneous language impairments irrespective of a previous pCMS diagnosis. Individualised and comprehensive postoperative language assessments seem necessary, given the inter-individual heterogeneity in the language outcomes.
Propensity score matched analysis of postoperative nausea and pain after one anastomosis gastric bypass (MGB/OAGB) versus sleeve gastrectomy (SG)
Authors: Vitiello Antonio , Iacovazzo Carmine , Berardi Giovanna , Vargas Maria , Marra Annachiara , Buonanno Pasquale , Velotti Nunzio , Musella Mario 
Published: May 2023

AbstractThe aim of our study was to assess and compare postoperative nausea and pain after one anastomosis gastric bypass (OAGB) and sleeve gastrectomy (LSG). Patients undergoing OAGB and LSG at our institution between November 2018 and November 2021 have been prospectively asked to report postoperative nausea and pain on a numeric analogic scale. Medical records were retrospectively reviewed to collect scores of these symptoms at the 6th and 12th postoperative hour. One-way analysis of variance (ANOVA) was used to evaluate effect of type of surgery on postoperative nausea and pain scores. To adjust for baseline differences between cohorts, a propensity score algorithm was used to match LSG patients to MGB/OAGB patients in a 1:1 ratio with a 0.1 tolerance. A total number of 228 (119 SGs and 109 OAGBs) subjects were included in our study. Nausea after OAGB was significantly less severe than after LSG both at the 6th and 12th hour assessment; pain was less strong after OAGB at the 6th hour but not after 12 h. Fifty-three individuals had a rescue administration of metoclopramide after LSG and 34 after OAGB (44.5% vs 31.2%, p = 0.04); additional painkillers were required by 41 patients after LSG and 23 after OAGB (34.5% vs 21.1%, p = 0.04). Early postoperative nausea was significantly less severe after OAGB, while pain was comparable especially at the 12th hour.
Orlicz–Lorentz function spaces equipped with the Orlicz norm
Authors: Foralewski Paweł , Kończak Joanna 
Published: May 2023

AbstractWe investigate Orlicz–Lorentz function spaces equipped with the Orlicz norm generated by any Orlicz function and any non-increasing weight function. As far as we know, this is the first time such a general research is conducted. First we show some basic properties of the Orlicz norm, including its equality to the Amemiya norm, the problem of attainability of infimum in the definition of the Amemiya norm and a formula for the norm of a characteristic function. Then we find criteria for the order continuity and strict monotonicity and we study the problem of existence of order linearly isometric copies of $$l^{\infty }$$

l
∞

.
The History of the Behavior Analyst Certification Board’s Ethics Codes
Authors: Sellers Tyra P. , Seniuk Holly A. , Lichtenberger Sarah N. , Carr James E. 
Published: May 2023

AbstractAs the primary certification organization in behavior analysis, the BACB has published nine ethics-based documents and codes since its inception in 1998. The ethics standards in these publications have served as the basis of ethics education and disciplinary enforcement in applied behavior analysis for over 2 decades. As it is important for developing professions to document their evolution for later historical analysis, the purpose of this article is to describe the development and evolution of the BACB’s ethics-based documents and codes.
Physische und psychische Beschwerden sowie arbeitsmedizinische Vorsorge bei Musikpädagog:innen verschiedener Altersgruppen
Authors: Kirsch Marieke , Kirsch Falko , Böckelmann Irina 
Published: May 2023

Zusammenfassung
Hintergrund
Der Beruf der Musikpädagog:innen an den Musikschulen stellt aus dem Blickwinkel der Belastungssituation eine Kombination der Berufe der Instrumental- oder Orchestermusiker:innen und der an allgemeinbildenden Schulen tätigen Lehrer:innen dar. Während es bereits Untersuchungen zu Belastungen und Beanspruchungen in den Einzelberufen Instrumental- und Orchestermusiker:innen sowie Lehrer:innen gibt, ist die Berufsgruppe Musikpädagog:innen bisher nur wenig untersucht worden. Als Hauptbelastungsfaktoren stellten sich Lärmbelastung, unzureichende räumliche Voraussetzungen, Probleme in der Interaktion sowie Belastungen des muskuloskeletalen Systems heraus. Um die Belastungs-Beanspruchungs-Situation konkret in diesem kombinierten Berufsbild zu analysieren, wurde eine Online-Befragung durchgeführt.

Methodik
Im Mittelpunkt dieser Arbeit stand die Fragestellung zur Beanspruchung und derzeitigen Arbeitsfähigkeit sowie Nutzung arbeitsmedizinischer Vorsorge. An der Befragung beteiligten sich 205 Proband:innen (33,7 % Männer und 66,3 % Frauen).

Ergebnisse
In dieser Berufsgruppe ergaben sich gehäuft Lärmempfindlichkeit (subjektive Einschätzung des Lärms; bei 60,5 %) und muskuloskeletale Beschwerden (82 %) als physische Beanspruchungen sowie verschiedene psychische Beeinträchtigungen. Signifikante Unterschiede in der Beschwerdehäufigkeit wurden zwischen den Altersgruppen nicht festgestellt.
Im Rahmen der Fragen bezüglich der Nutzung Vorsorgeangebote war auffällig, dass trotz der Häufigkeit von tätigkeitsbezogenen Beschwerden, eine arbeitsmedizinische Vorsorge an den Musikschulen nicht flächendeckend durchgeführt bzw. in Anspruch genommen wurde. Ebenso war die Nutzung von persönlicher Schutzausrüstung (Gehörschutz) selten.

Diskussion
Insgesamt spiegelten die ermittelten Daten die Komponenten der Belastungs-Beanspruchungs-Situation aus den Tätigkeiten von Instrumental‑/Orchestermusiker:innen und Lehrer:innen wider. Trotz der negativen Beanspruchungen aufgrund der zahlreichen Belastungsfaktoren wird eine arbeitsmedizinische Vorsorge oder Schutzausrüstung nicht lückenlos angeboten. Es wäre also notwendig, die Präventionsmaßnahmen zu intensivieren und die Beratung im Rahmen der Vorsorge auf die besonderen Bedürfnisse der Musikpädagog:innen individuell zuzuschneiden.
Risk Chain Mining of Hazard Sources in Metro Operation System Safety: A New Method to Mine and Control Risk for Safety Management
Authors: Xiaobing Ding , Gan Shi , Zhigang Liu , Hua Hu 
Published: May 2023

AbstractWith the promotion of the major strategy of national transportation power, the super-large-scale metro operation network has become an inevitable trend, and operation safety has become increasingly prominent. Metro operation dispatch logs and accident reports were taken as the research object, the hazard sources were efficiently and accurately identified, the risk chains of hazard sources were mined, and the risk evolution mechanism was revealed. Firstly, the transportation lexicon was constructed to improve the accuracy of word segmentation, the text features were extracted based on the term frequency-inverse document frequency (TF-IDF) algorithm, and the key eigenvalues were mined to identify the key hazard sources. Secondly, pattern matching was used to extract explicit causality, and the Self-Attention BiLSTM extracted implicit causality and integrated event trigger word position identification to enhance the effectiveness of implicit causality extraction. Finally, an example was given to verify the efficiency and accuracy of the model, the experiments showed that the F value of extraction effect was increased by nearly 10%, the extraction accuracy was 87.53%, the identification of operational hazard sources was more accurate, and the visualization of risk evolution law was realized.
New Kronecker–Weyl type equidistribution results and Diophantine approximation
Authors: Beck József , Chen William W. L. , Yang Yuxuan 
Published: May 2023

AbstractAn interesting result of Veech more than 50 years ago is a parity, or mod 2, version of the Kronecker–Weyl equidistribution theorem concerning the irrational rotation sequence $$\{q\alpha \}$$

{
q
α
}

, $$q=0,1,2,3,\ldots $$

q
=
0
,
1
,
2
,
3
,
…

If $$\alpha $$
α
is badly approximable and $$b\in (0,1)$$

b
∈
(
0
,
1
)

satisfies $$b\ne \{m\alpha \}$$

b
≠
{
m
α
}

for any $$m\in {\mathbb {Z}}$$

m
∈
Z

, then the parity of cardinalities of the sets $$\{1\leqslant q\leqslant N\,{:}\,\{q\alpha \}\in [0,b)\}$$

{
1
⩽
q
⩽
N

:

{
q
α
}
∈
[
0
,
b
)
}

as $$N\rightarrow \infty $$

N
→
∞

is evenly distributed. We first answer a question of Veech and establish a stronger form of the mod n analog of his result. Furthermore, for irrational $$\alpha $$
α
and $$b=\{m\alpha \}$$

b
=
{
m
α
}

for some $$m\in {\mathbb {N}}$$

m
∈
N

, we give a simple yet precise characterization of those cases that give rise to even distribution. We also obtain time-quantitative description of some very striking violations of uniformity—this part is particularly number theoretic in nature, and involves Ostrowski representations of positive integers and $$\alpha $$
α
-expansions of real numbers. The Veech discrete 2-circle problem can also be visualized as a problem that concerns 1-direction geodesic flow on a surface obtained by modifying the surface comprising two side-by-side squares by the inclusion of symmetric barriers and gates on the vertical edges, with appropriate modification of the vertical edge identifications. We establish a far-reaching generalization of this case to ones that concern 1-direction geodesic flow on surfaces obtained by modifying a finite square tiled translation surface in analogous but not necessarily symmetric ways.
Early Adaptive Schemas and Sexual Wellbeing in Women: Exploring Differences in Menopausal Status
Authors: Allen Andrew , Tully-Wilson Colleen 
Published: May 2023

AbstractThere is limited research concerning the relationship between early adaptive schema, from Young’s Schema Theory, and women’s sexual wellbeing. Schema Theory posits that early adaptive schema start forming in early childhood from core emotional needs being met, and positively influence individuals’ concept of self, relationships with others, and their behaviours. Building on this theory, the current study explored the relationship of early adaptive schema and adult women’s sexual wellbeing at pre-, peri-, and post-menopause. Four hundred and sixty-seven women, mostly partnered and heterosexual, from over ten countries, participated in an online survey measuring relationships between early adaptive schema and sexual wellbeing, measured by sexual functioning and sexual satisfaction. The strength of association of early adaptive schema and sexual well-being were evaluated in addition to known predictors. The results showed higher early adaptive schema were associated with higher sexual wellbeing, measured by sexual satisfaction and sexual functioning, with medium-to-large effect sizes, at pre and peri-menopause, and produced a non-significant result for post-menopause. The association of early adaptive schema continued after known factors were accounted for. The results support the use of early adaptive schema to promote sexual wellbeing for women at pre- and peri-menopause.
Subtleties in the trainability of quantum machine learning models
Authors: Thanasilp Supanut , Wang Samson , Nghiem Nhat Anh , Coles Patrick , Cerezo Marco 
Published: May 2023

AbstractA new paradigm for data science has emerged, with quantum data, quantum models, and quantum computational devices. This field, called quantum machine learning (QML), aims to achieve a speedup over traditional machine learning for data analysis. However, its success usually hinges on efficiently training the parameters in quantum neural networks, and the field of QML is still lacking theoretical scaling results for their trainability. Some trainability results have been proven for a closely related field called variational quantum algorithms (VQAs). While both fields involve training a parametrized quantum circuit, there are crucial differences that make the results for one setting not readily applicable to the other. In this work, we bridge the two frameworks and show that gradient scaling results for VQAs can also be applied to study the gradient scaling of QML models. Our results indicate that features deemed detrimental for VQA trainability can also lead to issues such as barren plateaus in QML. Consequently, our work has implications for several QML proposals in the literature. In addition, we provide theoretical and numerical evidence that QML models exhibit further trainability issues not present in VQAs, arising from the use of a training dataset. We refer to these as dataset-induced barren plateaus. These results are most relevant when dealing with classical data, as here the choice of embedding scheme (i.e., the map between classical data and quantum states) can greatly affect the gradient scaling.
Improved Power Control of DFIGs Driven by Wind Turbine under Unbalanced Grid Voltage
Authors: Shehata E. G. 
Published: May 2023

AbstractUndesired oscillation components appear in active and reactive powers, electromagnetic torque and DC-link voltage of doubly fed induction generators (DFIGs) connected to unbalanced grid voltage. These components oscillate at double source frequency as a result of negative sequence components in voltage and current. Different direct power control (DPC) techniques were studied in literatures to damp these oscillations. However, these techniques require sequence decomposition process, axes transformation of stator voltage/current and estimation of different power components which complicate the overall control system. This paper presents a simplified DPC of DFIGs in stationary reference frame under normal and unbalanced grid voltage. Decomposition process, axes transformation and compensation power terms are totally eliminated. Vector proportional- integral (VPI) controllers are designed to regulate stator active and reactive powers. The performance of the proposed DPC scheme using VPI and proportional-integral-resonant (PIR) controllers is analyzed and compared under different operating conditions. Bode diagram of open loop and closed loop control using VPI and PIR are studied to illustrate stability, steady state and transient response of the two controllers. Also, the performance of proposed technique and previous DPCs designed in synchronous reference frame is compared to prove the validity of proposed one. The results show that proposed DPC using VPI has superior performance in steady state and transient conditions with simple implementation.
A Time-Free Assumption for Solving Signature-Free Asynchronous Multivalued Byzantine Consensus
Authors: Nezzar Abderafik , Moumen Hamouma , Arar Chafik 
Published: May 2023

AbstractThis paper tackles the asynchronous signature-free Byzantine consensus. One way to circumvent the FLP impossibility result consists in adding a Time-free assumption. This assumption is based on the pattern of messages that are exchanged. In the context of authenticated asynchronous Byzantine systems where at most t processes may exhibit a Byzantine behavior, Moumen and Mostéfaoui provide the main result. They assume at least one correct process $$p_i$$

p
i

, called $$\diamond \langle t+1\rangle \text {-winning}$$

⋄
⟨
t
+
1
⟩
-winning

, and a set Q of t correct processes such that, eventually, for each query issued by $$p_i$$

p
i

, any process $$p_j$$

p
j

of Q receives a response from $$p_i$$

p
i

among the $$(n-t)$$

(
n
-
t
)

first responses to that query. The main contribution of this paper is to show that a deterministic solution for the Signature-free Byzantine consensus problem is possible if the system model satisfies an additional assumption that relies on the pattern of exchanged messages. To solve the Consensus problem, we assume a correct process $$p_i$$

p
i

, called $$\diamond \langle 2t+1\rangle \text {-winning}$$

⋄
⟨
2
t
+
1
⟩
-winning

, and a set Q of $$(2t+1)$$

(
2
t
+
1
)

correct processes (including $$p_i$$

p
i

itself) such that, eventually, for each query issued by $$p_i$$

p
i

, any process $$p_j$$

p
j

of Q receives a response from $$p_i$$

p
i

among the $$(n - t)$$

(
n
-
t
)

first responses to that query. The processes of the set Q may change over time. Based on this assumption, a Signature-free Multivalued Byzantine consensus protocol is proposed. Whereas many time-free protocols have been designed for the consensus problem in the crash model and in the Byzantine Authenticated model, this is, to our knowledge, the first time-free deterministic solution to the Signature-free Byzantine consensus Problem.
Mistrust Among Rescue Workers After the Terrorist Attack in Berlin in 2016 – Gender-Specific Health Inequality
Authors: Wesemann Ulrich , Helms Christian , Polk Sarah , Mahnke Manuel , Bühler Antje , Muschner Patric , Willmund Gerd 
Published: May 2023

Abstract

Objectives:
In this single-case-by-group comparison, we examine whether previously found cisgender differences in paranoid ideation after a terror attack are also seen in a transgender male emergency worker.

Methods:
Sixty emergency personnel who were exposed to the 2016 terror attack in Berlin were evaluated 3 to 4 and 21-25 mo after the attack.

Results:
On paranoid ideation, the transgender male showed higher scores than cisgender males (+2 standard deviations [SD]) and the overall group (+1 SD).

Conclusions:
This underpins the previously identified gender effects. It would be useful to consider specified pre- and postdeployment modules that take cis- and transgender differences into account.