bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal key pre‐distribution schemes from affine resolvable and partially affine resolvable designs
Authors: Saurabh Shyam , Sinha Kishore 
Published: July 2023

AbstractVarious key pre‐distribution schemes (KPSs) for distributed sensor networks (DSNs) were obtained from different combinatorial designs. A block design may be mapped to a KPS where is the number of nodes or network size and is the number of keys (points) per node. A KPS is corresponding to a symmetric balanced incomplete block design has full connectivity where all nodes are connected to each other. But it is desirable that all nodes do not share common keys as the compromise of any node will destroy the whole network (see Lee & Stinson, 2005; Martin, 2009). To meet the situation, Lee and Stinson (2005) introduced μ—common intersection design which has disjoint blocks and these disjoint blocks can establish a secure communication through certain common intersecting blocks. Here we have proposed optimal KPSs from affine resolvable and partially affine resolvable balanced incomplete block designs, group divisible designs and L2—type designs. It is shown that these designs are important classes of μ—common intersection designs. The KPSs obtained here are optimal in the sense of local connectivity. Mathematics Subject Classification (2010): 94C30; 68R05; 05B05; 62K10.
Perinatal outcome of fetuses predicted to be large‐for‐gestational age on universal third‐trimester ultrasound in non‐diabetic pregnancy
Authors: Robertson K. , Vieira M. , Impey L. 
Published: July 2023

ABSTRACTObjectiveTo describe the perinatal outcome of fetuses predicted to be large‐for‐gestational age (LGA) on universal third‐trimester ultrasound in non‐diabetic pregnancies of women attempting vaginal delivery.MethodsThis was a prospective population‐based cohort study of patients from a single tertiary maternity unit in the UK offering universal third‐trimester ultrasound and practicing expectant management of suspected LGA until 41–42 weeks. All women with a singleton pregnancy and an estimated due date between January 2014 and September 2019 were included. Women delivering before 37 weeks, those having a planned Cesarean delivery, those with pre‐existing or gestational diabetes, those with fetal abnormalities and those who did not undergo a third‐trimester scan were excluded from the assessment of perinatal outcome of cases with LGA predicted on ultrasound after implementation of the universal scan period. Association of LGA on universal third‐trimester ultrasound screening and perinatal adverse outcome was assessed, with the exposures of interest being estimated fetal weight (EFW) at the 90th–95th, > 95th and > 99th percentile. The reference group was composed of fetuses with EFW at the 30th–70th percentile. Analysis was performed using multivariate logistic regression. The evaluated adverse perinatal outcomes included a composite outcome of admission to neonatal intensive care unit, Apgar score < 7 at 5 min and arterial cord pH < 7.1 (CAO1) and a composite outcome of stillbirth, neonatal death and hypoxic ischemic encephalopathy (CAO2). Secondary maternal outcomes were induction of labor, mode of delivery, postpartum hemorrhage, shoulder dystocia and obstetric anal sphincter injury.ResultsCases with EFW > 95th percentile on universal third‐trimester scan were at increased risk of CAO1 (adjusted odds ratio (aOR), 2.18 (95% CI, 1.69–2.80)) and CAO2 (aOR, 2.58 (95% CI, 1.05–6.34)). Cases with EFW at the 90th–95th percentile had a less pronounced increase in the risk of CAO1 (aOR, 1.35 (95% CI, 1.02–1.78)) and were not at increased risk of CAO2. All pregnancies with a fetus predicted to be LGA were at increased risk of all of the evaluated secondary maternal outcomes except for obstetric anal sphincter injury. The risk of adverse maternal outcome was typically higher with increasing EFW. Post‐hoc exploration of data suggested that shoulder dystocia had a limited contribution to composite adverse perinatal outcomes in LGA cases (population attributable fraction of 10.8% for CAO1 and 29.1% for CAO2).ConclusionsCases with EFW > 95th percentile are at increased risk of severe adverse perinatal outcome, such as death and hypoxic ischemic encephalopathy. These findings should aid antenatal counseling regarding the associated risk and delivery options. © 2023 International Society of Ultrasound in Obstetrics and Gynecology.
Hydrochemical and isotopic evaluation of groundwater and river water in the transboundary Silala River watershed
Authors: Aravena Ramon , Herrera Christian , Urrutia Javier 
Published: July 2023

AbstractThis article reviews a hydro‐chemical and isotopic study aiming to provide information about groundwater‐surface water interactions in the Silala River, a transboundary basin shared between Chile and Bolivia. The chemical and isotopic data show: The springs located in the northern section of the lower course of the Silala River and the Cajones springs in Bolivia have similar characteristics and represent a shallow flow system fed by local recharge. In contrast, the springs located in the higher and southern sections of the lower course of the river have similar characteristics than the Orientales springs located in the higher part of river basin indicating these springs are associated with a high‐altitude recharge area. The river in the upper course in Chile has similar chemical and isotopic characteristics to the springs already mentioned, indicating most of the river flow comes from the high part of the basin in Bolivia. The groundwater shows different chemical characteristics, similar depleted isotopic values, and much lower 14C values (including Orientales groundwater) than the upper springs and river, providing the first evidence that both systems are not connected in the Chilean section of the river and the springs system is part of a perched aquifer confirmed by visual field observations. These data support a conceptual model which includes an interaction between a perched aquifer, probably in alluvial deposits on the flanks of the volcanoes, and the river as result of a complex system of fractures present in the near‐surface levels of Silala Ignimbrite. This study provides valuable information for modeling of hydrological and hydrogeological data in the study area.This article is categorized under:
Science of Water > Hydrological Processes
Science of Water > Water Quality
Papillary thyroid carcinoma: A bibliometric analysis of the top 100 cited articles
Authors: Ishtiak Mahamud , Jake Ahmed , Francis deCastro , Ameeth Sanu 
Published: July 2023

AbstractObjectivesTo describe the current trends and key themes that are shaping the literature surrounding papillary thyroid carcinoma.MethodsThe Thomson Reuters Web of Science citation database was used to identify manuscripts relevant to papillary thyroid carcinoma. These were then subdivided into title, author, journal, publication date, theme, and manuscript types. Themes were then identified.ResultsA total of 1506 manuscripts were returned. The mean citation number was 163 (range 885–74), with the highest citation rate of 73.5. The highest impact factor was JAMA (impact factor of 56.27). 85% were original research, 10% review articles, and 5% were guidelines. The highest number of manuscripts were published in South Korea (21%).ConclusionsThis bibliometric analysis describes the most influential papers published in the topic of papillary thyroid carcinoma. Historic key themes have been endocrinology and metabolism, followed by surgical management and oncology (subdivided into surgery, pathology, radiology and public health/epidemiology). South Korea leads the world with the largest number of publications in this field; with an incidence rate of papillary thyroid carcinoma that is significantly higher than most parts of the world. Despite concerns with overdiagnosis, a collaborative radiological team skilled in ultrasonography of the neck appears to be of great value to the workup of thyroid cancers.
Digital Twin for Evaluating Support Characteristics for Industrial Exoskeletons for Upper Body Activities
Authors: Villotti Samuel , Durst Lukas , Weidner Robert 
Published: July 2023

AbstractBeside the advancing trends in automation especially in regard to Industry 4.0, workers in industrial factories in non-automated work activities often face repetitive tasks with heavy workloads. Whenever methods or adaptions in both technology and organization are insufficient to optimize working conditions, personal-related interventions as exoskeletons come into question. They may prove successful in alleviating musculoskeletal disorders and relieving physical strain. The increasing number of exoskeletons often challenges users or companies to select or specify an appropriate specific system for their applications. In order to address this problem, this paper presents the possibility for developers of using a digital twin for evaluating particular support characteristics of exoskeletons at an early stage of product development. The process for a user-specific design is strongly dependent on the activity and its environment. As a use case for the validation of a digital twin, an overhead work activity is analyzed and relevant factors such as muscle activity are examined in this paper. Initial simulation results show promising possibilities for parameter variation of different properties of an industrial work process in order to create a starting point for a future developing of an optimally tailored upper body exoskeleton.
Simulation-Based Potential Analysis of Line-Less Assembly Systems in the Automotive Industry
Authors: Rachner Jonas , Kaven Lea , Voet Florian , Göppert Amon , Schmitt Robert H. 
Published: July 2023

AbstractIncreasing product variety, shorter product life cycles, and the ongoing transition towards electro-mobility demand higher flexibility in automotive production. Especially in the final assembly, where most variant-dependent processes are happening, the currently predominant concept of flowing line assembly is already been pushed to its flexibility limits. Line-less assembly systems break up the rigid line structures by enabling higher routing and operational flexibility using individual product routes that are takt-time independent. Hybrid approaches consider the combination of line and matrix-structured systems to increase flexibility while maintaining existing structures. Such system changes require a high planning effort and investment costs. For a risk-minimized potential evaluation, discrete-event simulation is a promising tool. However, the challenge is to model the existing line assembly concept and line-less assembly for comparison. In this work, a comprehensive scenario analysis based on real assembly system data is conducted to evaluate the potential of line-less assembly in the automotive industry. Within the simulation, an online scheduling algorithm for adaptive routing and sequencing is used. Based on an automated experiment design, several system parameters are varied full-factorially and applied to different system configurations. Various scenarios considering worker capabilities, station failures, material availability, and product variants are simulated in a discrete-event simulation considering realistic assumptions. Results show that the throughput and utilization can be increased in the hybrid and line-less systems when assuming that the stations will have failures and the assumption of an unchanged order input.
Molecular Dynamics Simulation of Cutting Processes: The Influence of Cutting Fluids at the Atomistic Scale
Authors: Schmitt S. , Stephan S. , Kirsch B. , Aurich J. C. , Urbassek H. M. , Hasse H. 
Published: July 2023

AbstractMolecular dynamics simulations are an attractive tool for studying the fundamental mechanisms of lubricated machining processes on the atomistic scale as it is not possible to access the small contact zone experimentally. Molecular dynamics simulations provide direct access to atomistic process properties of the contact zone of machining processes. In this work, lubricated machining processes were investigated, consisting of a workpiece, a tool, and a cutting fluid. The tool was fully immersed in the cutting fluid. Both, a simple model system and real substance systems were investigated. Using the simplified and generic model system, the influence of different process parameters and molecular interaction parameters were systematically studied. The real substance systems were used to represent specific real-world scenarios. The simulation results reveal that the fluid influences mainly the starting phase of an atomistic level cutting process by reducing the coefficient of friction in this phase compared to a dry case. After this starting phase of the lateral movement, the actual contact zone is mostly dry. For high pressure contacts, a tribofilm is formed between the workpiece and the cutting fluid, i.e. a significant amount of fluid particles is imprinted into the workpiece crystal structure. The presence of a cutting fluid significantly reduces the heat impact on the workpiece. Moreover, the cutting velocity is found to practically not influence the coefficient of friction, but significantly influences the dissipation and, therefore, the temperature in the contact zone. Finally, the reproducibility of the simulation method was assessed by studying replica sets of simulations of the model system.
VI. Kapitel: Unzuverlässigkeit und das Ungefähre – Otto F. Walters Herr Tourel (1962)
Authors: Aumüller Matthias 
Published: July 2023

ZusammenfassungOtto F. Walter war nicht nur Autor, sondern auch einflussreicher Verleger und als solcher u. a. Begründer der Sammlung Luchterhand. Als Sohn des katholischen Verlagsgründers und Politikers Otto Walter 1928 in der Nähe von Olten geboren, wuchs Otto F. Walter mit acht älteren Schwestern in einer bücherfreundlichen Umgebung auf. Eine von ihnen war die Dichterin Silja Walter, die ihn früh mit ihren literarischen Versuchen konfrontierte. Als jüngstes Kind bekam er den psychischen Verfall des Vaters mit seinen regelmäßigen Alkoholexzessen direkt mit.
Relations Between the Energy and Topological Indices of a Graph
Authors: Jahanbani Akbar , Sheikholeslami Seyed Mahmoud , Filipovski Slobodan 
Published: July 2023

AbstractIn this paper, we give various lower and upper bounds for the energy of graphs in terms of several topological indices of graphs: the first general multiplicative Zagreb index, the general Randić index, the general zeroth-order Randić index, the redefined Zagreb indices, and the atom-bond connectivity index. Moreover, we obtain new bounds for the energy in terms of certain graph invariants as diameter, girth, algebraic connectivity and radius.
Infliximab abrogates adenine-induced chronic kidney disease via modulation of the MAPK/JNK/ASK signaling pathway in rats
Authors: Nageeb Mahitab M. , Talaat Aliaa , Reda Samar M. , Elsammak Ghada A. 
Published: July 2023

AbstractChronic kidney disease (CKD) is a prominent cause of death worldwide. Infliximab is one of the anti-TNF-α; herein, we studied the effect of infliximab on adenine-induced CKD. To inspect the role of infliximab, either ameliorative or curative, on CDK induced with adenine. Thirty Wistar albino rats were separated into five groups of 6 rats’ each: rats of group Ι were kept as control given saline, rats of group II were treated with infliximab (5 mg/kg, i.p.) for 5 weeks, rats of group ΙΙΙ (the diseased group) had an adenine containing diet (0.25% W/W in feed) for 5 weeks, rats of group ΙV (the ameliorative group) had an adenine-containing diet and infliximab (5 mg/kg, i.p.) for 5 weeks simultaneously, and rats of group V (the curative group) had adenine containing diet then a single dose of infliximab (5 mg/kg, i.p.) was given in the 6th week. Infliximab treatment revealed a decrease in the plasma levels of urea, creatinine, NGAL, and MDA with a substantial increase in TAC. Also, inflammatory mediators such as IL-6 and NF-κB were significantly decreased with the down-regulation of the ASK1/MAPK/JNK pathway. Caspase 3 was downregulated. Also, infliximab treatment exhibited improvement in the histological and immunohistochemical kidney changes. Through its involvement in reducing oxidative stress, inflammation, and apoptosis, infliximab has an ameliorative and curative effect on CKD induced with adenine.
Lossy Kernelization of Same-Size Clustering
Authors: Bandyapadhyay Sayan , Fomin Fedor V. , Golovach Petr A. , Purohit Nidhi , Simonov Kirill 
Published: July 2023

AbstractIn this work, we study the k-median clustering problem with an additional equal-size constraint on the clusters from the perspective of parameterized preprocessing. Our main result is the first lossy (2-approximate) polynomial kernel for this problem parameterized by the cost of clustering. We complement this result by establishing lower bounds for the problem that eliminate the existence of an (exact) kernel of polynomial size and a PTAS.
Incremental prognostic value of stress phase entropy over standard PET myocardial perfusion imaging variables
Authors: Kuronuma Keiichiro , Miller Robert J. H. , Van Kriekinge Serge D. , Han Donghee , Singh Ananya , Gransar Heidi , Dey Damini , Berman Daniel S. , Slomka Piotr J. 
Published: July 2023

Abstract
Purpose
Phase analysis can assess left ventricular dyssynchrony. The independent prognostic value of phase variables over positron emission tomography myocardial perfusion imaging (PET-MPI) variables including myocardial flow reserve (MFR) has not been studied. The aim of this study was to explore the prognostic value of phase variables for predicting mortality over standard PET-MPI variables.

Methods
Consecutive patients who underwent pharmacological stress-rest 82Rb PET study were enrolled. All PET-MPI variables including phase variables (phase entropy, phase bandwidth, and phase standard deviation) were automatically obtained by QPET software (Cedars-Sinai, Los Angeles, CA). Cox proportional hazard analyses were used to assess associations with all-cause mortality (ACM).

Results
In a total of 3963 patients (median age 71 years; 57% male), 923 patients (23%) died during a median follow-up of 5 years. Annualized mortality rates increased with stress phase entropy, with a 4.6-fold difference between the lowest and highest decile groups of entropy (2.6 vs. 12.0%/year). Abnormal stress phase entropy (optimal cutoff value, 43.8%) stratified ACM risk in patients with normal and impaired MFR (both p < 0.001). Among three phase variables, only stress phase entropy was significantly associated with ACM after the adjustment of standard clinical and PET-MPI variables including MFR and stress-rest change of phase variables, whether modeled as binary variables (adjusted hazard ratio, 1.44 for abnormal entropy [> 43.8%]; 95%CI, 1.18–1.75; p < 0.001) or continuous variables (adjusted hazard ratio, 1.05 per 5% increase; 95%CI, 1.01–1.10; p = 0.030). The addition of stress phase entropy to the standard PET-MPI variables significantly improved the discriminatory power for ACM prediction (p < 0.001), but the other phase variables did not (p > 0.1).

Conclusion
Stress phase entropy is independently and incrementally associated with ACM beyond standard PET-MPI variables including MFR. Phase entropy can be obtained automatically and included in clinical reporting of PET-MPI studies to improve patient risk prediction.
Significant importance of negative affect and satisfaction with local governmental air control of objective air pollution, perceived air quality, and pro-environmental behavior relationships
Authors: Yang Chunyu , Hao Chunxu , Huang Lianzhen , Qiu Xionghui , Chen Xiaoyan 
Published: July 2023

Abstract
Background
Air pollution has aroused global concerns because of its adverse effects on individuals’ physical and psychological health and behavior. Although there has been substantial traditional consideration of the objective impact of air pollution, more knowledge is needed about perceived air quality (PAQ), its association with objective air pollution (OAP), and the relationship between OAP and PAQ with respect to pro-environmental behavior (PEB).

Methods
To delineate and investigate the effect of air pollution on both perceived and objective perspectives of PEB and its underlying psychological mechanisms, this study distributed a survey questionnaire related to PAQ, the Positive and Negative Affect Schedule (PANAS), satisfaction with local governmental control of air quality (SAT), and the PEB scale. The monitored data of objective city-level air pollution and 391 samples of survey data were included in this study.

Results
The results reveal that both PAQ and OAP increase individuals’ negative affect (NA) and decrease SAT, which sequentially restrains PEB. More importantly, PAQ, NA, and SAT played mediating roles in the relationship between OAP and PEB. Empirical testing for group difference also indicated that while there is no gender-related difference with respect to caring about SAT and PEB caused by air pollution, gender effects on NA were significantly different. Age-related differences exist among younger, medium, and older age groups with respect to NA, SAT, and PEB caused by air pollution, and there are also background differences with respect to NA, SAT, and PEB, although income does not generate a significant group difference effect on NA, SAT, and PEB.

Conclusions
The findings corroborate the important roles of affect and SAT in activating public concern about air quality. We discuss the possible ways that affect and SAT might enhance PEB as well as the limitations of this study. More pollutants and mechanisms could be considered in future studies.
On the stability of the representation of finite rank operators
Authors: Carnicer J. M. , Mainar E. , Peña J. M. 
Published: July 2023

AbstractThe stability of the representation of finite rank operators in terms of a basis is analyzed. A conditioning is introduced as a measure of the stability properties. This conditioning improves some other conditionings because it is closer to the Lebesgue function. Improved bounds for the conditioning of the Fourier sums with respect to an orthogonal basis are obtained, in particular, for Legendre, Chebyshev, and disk polynomials. The Lagrange and Newton formulae for the interpolating polynomial are also considered.