bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Port-Hamiltonian Structure of Continuum Mechanics
Authors: Rashad Ramy , Stramigioli Stefano 
Published: January 2025

Abstract
In this paper, we present a novel approach to the geometric formulation of solid and fluid mechanics within the port-Hamiltonian framework, which extends the standard Hamiltonian formulation to non-conservative and open dynamical systems. Leveraging Dirac structures, instead of symplectic or Poisson structures, this formalism allows the incorporation of energy exchange within the spatial domain or through its boundary, which allows for a more comprehensive description of continuum mechanics. Building upon our recent work in describing nonlinear elasticity using exterior calculus and bundle-valued differential forms, this paper focuses on the systematic derivation of port-Hamiltonian models for solid and fluid mechanics in the material, spatial, and convective representations using Hamiltonian reduction theory. This paper also discusses constitutive relations for stress within this framework including hyper-elasticity, for both finite and infinitesimal strains, as well as viscous fluid flow governed by the Navier–Stokes equations.
Biomarkers associated with anastomotic leakage after esophagectomy: a systematic review
Authors: Popa Călin , Schlanger Diana , Aiolfi Alberto , ElShafei Moustafa , Triantafyllou Tania , Theodorou Dimitrios , Skrobic Ognjan , Simic Aleksandar , Al Hajjar Nadim , Bonavina Luigi 
Published: January 2025

Abstract

Purpose
Anastomotic leakage (AL) is one of the most important complications that occurs after upper gastrointestinal surgery, registering rates of 20–30% after esophagectomy. The role of systemic inflammatory biomarkers to predict anastomotic leaks is controversial and needs systematization.

Methods
A systematic review based on the PRISMA guidelines criteria was performed. PubMed, Scopus, and Embase were queried using MESH Terms and All Fields key words to identify studies investigating a range of immune-inflammatory factors in predicting AL.

Results
Twenty-four studies were included in this review. The total number of included patients was 5903, ranging in each study from 42 to 612. The included studies reported patients that underwent different techniques of esophagectomy (Ivor Lewis, McKeown, Orringer or thoracoabdominal esophagectomy) and 23 out of 24 studies included patients that underwent neoadjuvant treatment. While different biomarkers at different timepoints were analyzed, most studies have indicated postoperative biomarkers, between day 3 and day 5 to reach statistical significance.

Conclusions
Systemic inflammatory biomarkers represent potential risk stratification and predicting tools for AL after esophageal surgery, but more studies need to be conducted to validate their clinical utility.
Determination of adequate bony resection margins in inflammatory jaw pathologies using SPECT-CT in primary mandibular reconstruction with virtually planned vascularized bone flaps
Authors: Winnand Philipp , Lammert Matthias , Ooms Mark , Heitzer Marius , Katz Marie Sophie , Peters Florian , Raith Stefan , Mottaghy Felix M. , Hölzle Frank , Modabber Ali 
Published: January 2025

Abstract

Objectives
In advanced stages of osteoradionecrosis, medication-related osteonecrosis of the jaw, and osteomyelitis, a resection of sections of the mandible may be unavoidable. The determination of adequate bony resection margins is a fundamental problem because bony resection margins cannot be secured intraoperatively. Single-photon emission computed tomography (SPECT-CT) is more accurate than conventional imaging techniques in detecting inflammatory jaw pathologies. The clinical benefit for virtual planning of mandibular resection and primary reconstruction with vascularized bone flaps has not yet been investigated. This study aimed to evaluate the determination of adequate bony resection margins using SPECT computed tomography (SPECT-CT) for primary microvascular reconstruction of the mandible in inflammatory jaw pathologies.

Materials and methods
The cases of 20 patients with inflammatory jaw pathologies who underwent primary microvascular mandibular reconstruction after the bony resection margins were determined with SPECT-CT were retrospectively analyzed. The bony resection margins determined by SPECT-CT were histologically validated. The sensitivity was calculated as the detection rate and the positive predictive value as the diagnostic precision. Radiological ossification of the vascularized bone flaps with the mandibular stumps was assessed at least 6 months after reconstruction. The clinical course was followed for 12 months.

Results
The determination of adequate bony resection margins with SPECT-CT yielded a sensitivity of 100% and a positive predictive value of 94.7%. Of all the bony resection margins, 97.4% were radiologically sufficiently ossified with the vascularized bone flap and showed no complications in the clinical course.

Conclusions
SPECT-CT could increase the probability of determining adequate bony resection margins.

Clinical relevance
SPECT-CT could have a beneficial clinical impact in the context of primary microvascular bony reconstruction in inflammatory jaw pathologies.
Erholungs-Belastungs-Zustand und Wohlbefinden von Frauen im Rettungsdienst
Authors: Keck Elisabeth , Schumann Heiko , Thielmann Beatrice , Böckelmann Irina 
Published: January 2025

Zusammenfassung

Hintergrund
Frauen im Rettungsdienst erleben neben den allgemeinen Belastungen des Berufsfelds zusätzliche Belastungsfaktoren. Diese gründen meist in geschlechtsbezogener Diskriminierung und sexueller Belästigung.

Ziel der Arbeit
Ziel dieser Arbeit ist eine frauenfokussierte Betrachtung von Beanspruchung, Wohlbefinden und Erholung im Rettungsdienst.

Methodenteil
In den zwei fragebogengestützten quantitativen Querschnittsstudien wurden, neben einer Erfassung von soziodemografischen Daten, das Wohlbefinden sowie Erholungs- und Beanspruchungswerte von insgesamt 331 Rettungsdienstmitarbeiterinnen verglichen. Das Wohlbefinden wurde über den Wohlbefinden-Index der World-Health-Organization (WHO-5) erfasst. Für Erholungs- und Beanspruchungswerte wurde der Erholungs- und Belastungsfragebogen nach Kallus verwendet (EBF).

Ergebnisse
Die Werte des Belastungs- und Erholungsempfindens von Frauen im Rettungsdienst lagen durchschnittlich außerhalb des Optimumbereichs. Die Beanspruchungswerte nahmen im zweiten Zeitraum signifikant zu (t1: 2,81 ± 0,91; t2: 3,17 ± 1,06; p = 0,001), gleichsam sanken die Erholungswerte ebenfalls signifikant (t1: 2,87 ± 0,89; t2: 2,56 ± 0,84; p = 0,001). Weibliche Einsatzkräfte beurteilten ihr subjektives Wohlbefinden durchschnittlich als gering bzw. schlecht (44,8 ± 18,6). Im Vergleich der Erhebungszeiträume sank das subjektive Wohlbefinden signifikant (t1: 47,9 ± 18,2; t2: 42,2 ± 18,7; p = 0,004).

Diskussion
Die Studie zeigte eine starke Beanspruchung von Frauen im Rettungsdienst. Diskriminierung und Geschlechterstereotypen können dabei zusätzliche Stressfaktoren darstellen. Unter anderem können familiäre Verpflichtungen zu Übermüdung, Zeitdruck und sozialen Spannungen führen. Physische Erholung kann aufgrund biologischer Unterschiede geringer ausfallen. Diese Ergebnisse bieten eine Grundlage für künftige Studien und gezielte Präventionsmaßnahmen für Frauen im Rettungsdienst.
Abrupt physico-chemical changes in the limnology of Pyrenean mountain lakes necessitate urgent management actions
Authors: Sentenac Hugo , Schmeller Dirk S. , Chardon Emilie , Fisher Matthew C. , Loyau Adeline 
Published: January 2025

Abstract
Mountain lakes are rare ecological niches supporting unique species assemblages and are important sources of safe drinking water for wildlife, livestock and humans. Located at high altitude, these lakes are vulnerable to environmental stressors such as climate or land-use change, impacting their ecosystem functions. However, although trends in water temperature and physico-chemical composition have been fairly well studied in large mountain lakes, the same cannot be said for small- to medium-sized shallow lakes. Here, using measurements of the water chemistry of 25 Pyrenean mountain lakes and temperature records for 14 of them, we show that the environmental conditions which prevail in their littoral zones have undergone rapid changes between 2007 and 2023. Over this 16-year period, we found that, on average, the duration of the ice-cover period decreased by 58.35 days, and the average annual water temperature rose by 1.65 °C. We also found a significant overall decrease in pH, total organic carbon and nitrogen, as well as a significant increase in hardness and dissolved potassium. Our results demonstrate rapid abiotic environmental alterations in mountain lakes, with potential negative implications for humans, wildlife, livestock and ecosystem functioning. Likely consequences include declines in aquatic biodiversity, a degradation in the quality of drinking water and increased health risks from harmful algal blooms. Policy must urgently acknowledge the impacts of global change in mountains in order to take the necessary management actions.
Adding higher-level semantics to Functional Mock-up Units for easier, faster, and more robust co-simulation connections
Authors: Rindarøy Martin , Nordahl Håvard , Sadjina Severin , Skjong Stian , Hagaseth Marianne 
Published: January 2025

Abstract
The task of interfacing sub-simulators in a co-simulation often remains difficult, tedious, and prone to error. Here, we describe how this process, and the validation of the resulting interface connections, can be made simpler, faster, and more reliable. Especially when, as is often the case, several individuals or teams collaborate on modeling and simulating a full system. This is achieved by grouping functional mock-up interface (FMI) variables into types close to the relevant engineering domains using semantics formalized as an ontology. Several benefits, we argue, are gained from this: clearer communication, increased validation potential, and reduced number of interface connections to deal with. The validity and the limitations of our approach are demonstrated with a detailed case study of a real maritime system: A dynamic positioning (DP) hardware controller connected to several independent co-simulation models via 156 variables in 78 connections. The proposed solution greatly reduces the complexities and the error potential related to interfacing such systems. All results including reference implementations are openly available through the open simulation platform.
MHNet: Multi-view High-Order Network for Diagnosing Neurodevelopmental Disorders Using Resting-State fMRI
Authors: Li Yueyang , Zeng Weiming , Dong Wenhao , Cai Luhui , Wang Lei , Chen Hongyu , Yan Hongjie , Bian Lingbin , Wang Nizhuan 
Published: January 2025

Abstract
Deep learning models have shown promise in diagnosing neurodevelopmental disorders (NDD) like ASD and ADHD. However, many models either use graph neural networks (GNN) to construct single-level brain functional networks (BFNs) or employ spatial convolution filtering for local information extraction from rs-fMRI data, often neglecting high-order features crucial for NDD classification. We introduce a Multi-view High-order Network (MHNet) to capture hierarchical and high-order features from multi-view BFNs derived from rs-fMRI data for NDD prediction. MHNet has two branches: the Euclidean Space Features Extraction (ESFE) module and the Non-Euclidean Space Features Extraction (Non-ESFE) module, followed by a Feature Fusion-based Classification (FFC) module for NDD identification. ESFE includes a Functional Connectivity Generation (FCG) module and a High-order Convolutional Neural Network (HCNN) module to extract local and high-order features from BFNs in Euclidean space. Non-ESFE comprises a Generic Internet-like Brain Hierarchical Network Generation (G-IBHN-G) module and a High-order Graph Neural Network (HGNN) module to capture topological and high-order features in non-Euclidean space. Experiments on three public datasets show that MHNet outperforms state-of-the-art methods using both AAL1 and Brainnetome Atlas templates. Extensive ablation studies confirm the superiority of MHNet and the effectiveness of using multi-view fMRI information and high-order features. Our study also offers atlas options for constructing more sophisticated hierarchical networks and explains the association between key brain regions and NDD. MHNet leverages multi-view feature learning from both Euclidean and non-Euclidean spaces, incorporating high-order information from BFNs to enhance NDD classification performance.
Polynomial reduction from syndrome decoding problem to regular decoding problem
Authors: Zajac Pavol 
Published: January 2025

Abstract
The regular decoding problem asks for (the existence of) regular solutions to a syndrome decoding problem (SDP). This problem has increased applications in post-quantum cryptography and cryptanalysis. Recently, Esser and Santini explored in depth the connection between the regular (RSD) and classical syndrome decoding problems. They have observed that while RSD to SDP reductions are known (in any parametric regime), a similar generic reduction from SDP to RSD is not known. In our contribution, we examine two different generic polynomial reductions from a syndrome decoding problem to a regular decoding problem instance. The first reduction is based on constructing a special parity check matrix that encodes weight counter progression inside the parity check matrix, which is then the input of the regular decoding oracle. The target regular decoding problem has a significantly longer code length, that depends linearly on the weight parameter of the original SDP. The second reduction is based on translating the SDP to a non-linear system of equations in the Multiple Right-Hand Sides form, and then applying RSD oracle to solve this system. The second reduction has better code length. The ratio between RSD and SDP code length of the second reduction can be bounded by a constant (less than 8).
Drill Pattern Optimisation for Large Complex Blasts to Improve Fragmentation and Dig Efficiency
Authors: Perincek Ozan , Loxton Ryan , Kulkarni Sarang , Arthur Daniel 
Published: January 2025

Abstract
At large-scale open-pit metallic mines, drill-and-blast designs can reach over 1,000 drill holes per blast. A critical input to the design of a blast is the location of sensitive zones where ground vibration, air overpressure or flyrock needs to be constrained. The other critical input is the hardness profile of the ground. Often, the hardness across such large blasts varies significantly from soft to extra hard. Traditional approaches for pattern design use constant distance (burden and spacing) between the production drill holes and vary the explosive product strength and amount in each hole to account for variation in hardness and to adhere to blast constraints. Although this approach is operationally easier to execute, it is challenging to meet fragmentation and diggability objectives. To better address these objectives, this work provides a nonlinear mathematical model for optimising drill hole locations in conjunction with explosive amounts. The model optimises the design using a three-stage methodology. In the first stage, a novel heuristic method is used to perform local optimisation to determine the number of holes. In the second stage, the precise hole locations are determined, and in the third stage the energy intensity in each hole is optimised. In a study of 10 blasts from a Pilbara iron ore mine, for the dig efficiency objective, results indicate that variable designs achieve

$$\sim $$

∼

2% better dig efficiency, with

$$\sim $$

∼

11% fewer holes. For the fragmentation objective, variable designs achieve

$$\sim $$

∼

9% better adherence to the target mean particle size, with

$$\sim $$

∼

5% less standard deviation and

$$\sim $$

∼

13% fewer holes.
Longitudinal relationships across sleep, physical activity, and mental wellbeing in early-to-mid-adolescence: a developmental cascades investigation
Authors: Marquez Jose , Panayioutou Margarita , Farzinnia Reihaneh , Cheng Qiqi , Humphrey Neil 
Published: January 2025

Abstract

Purpose
Sleep (SL), physical activity (PA), and wellbeing (WB) are three factors linked to positive development in adolescence. Despite theoretical support and some empirical evidence of developmental associations between these factors, few studies have rigorously investigated reciprocal associations over time separating between-person and within-person effects, and none have investigated all three in concert. Thus, it remains unclear how the interplay between SL, PA and WB unfolds across time within individuals. This study examines this question in the crucial early-to-mid-adolescence developmental transition.

Method
Separating between- and within-person effects, a random-intercept cross-lagged panel model was fitted to a dataset of N = 27,949 adolescents (age 12/13 at first timepoint) from Greater Manchester, England, using a three-by-three design (three annual timepoints: T1, T2, T3; three variables: SL, PA, WB).

Results
Analyses revealed gender-specific developmental cascade pathways. Specifically, we found positive reciprocal associations between SL and WB for girls (at T1→T2), whereas for boys, SL positively predicted WB (at both T1→T2 and T2→Τ3) but WB did not predict SL. We also found that WB predicted PA for boys (at T2→T3) but this finding was sensitive to model specification and yielded a smaller effect than other cross-lagged pathways.

Conclusion
Our results highlight the importance of sleep as a driver of adolescent wellbeing, and the role of gender in developmental cascade processes. Study strengths, limitations, and implications are discussed.
Concentration versus excellence: lessons learned of European R&D &I framework programs
Authors: Kosztyán Zsolt T. , Hausz Frigyes , Csizmadia Tibor , Katona Attila , Szabó István , Fehérvölgyi Beáta 
Published: January 2025

Abstract
Framework programs (FPs) are the main research policy tools of the European Union (EU), attracting substantial attention from policy-makers and scholars. Therefore, an increasing number of studies have investigated the EU’s FPs from various angles; however, very few studies address the effect of the complex nature of the concentration of resources and their implementation. While several studies have examined the concentrations of collaboration structures, much less attention has been given to institutions, especially the concentrations that appear during implementation. Institutions that have been awarded several projects at the same time are forced to share their resources between the running projects, which can make the implementation of the projects riskier and thus jeopardize the project’s outcome. Therefore, the role of project management, which must allocate resources among complex implementation structures, such as multiprojects and programs, across portfolios, is appreciated. The aim of this study was to analyze the progression of the nature of concentration, such as institutional concentration in the four most recent framework programs (FPs), namely, FP5, FP6, FP7, and Horizon 2020 (H2020), and the structural and implementation concentrations in the last two framework programs. The study employed the CORDIS database, which encompasses both institutional and project-related information derived from four distinct framework programs. The findings indicated that the parameters of the collaboration network exhibited minimal changes; however, the concentrations of institutions experienced significant alterations. The concentration of complex project structures increased along with institutional concentration, which in turn led to greater efficiency and productivity and, in this way, excellence. Hence, it can be inferred that the output-increasing effect of the program structure is undermined in the deployment of other implementation structures by the need to share resources among several projects running in parallel. The strategy of using parallel projects involves inherent hazards because of the finite nature of resources, which consists primarily of human talent in the form of researchers. The results currently support policy-makers in three ways: (1) an improved understanding of how implementation structures evolve in EU-funded Framework Programs; (2) strengthened linkages among institutional concentration, productivity and excellence; and (3) insights into the design of the EU FP ecosystem.
Individual and classroom-level associations of within classroom friendships, friendship quality and a sense of peer community on bullying victimization
Authors: Kloo Mattias 
Published: January 2025

Abstract
For most students, attending school entails daily intense social interactions with classmates in a classroom context. While many of these interactions are positive and lead to the development of friendships and a shared classroom community, some students instead suffer peer harassment and bullying. According to the social-ecological theory these disparate social phenomena may be linked. The aim of this study was to examine how number of friends, perceived friendship quality, and a sense of peer community were associated with bullying victimization at both the individual and classroom level. Additionally, to thoroughly investigate the nuances of different types of friendship qualities the concept was analyzed both as one unified construct and as five distinct dimensions (companionship, conflict, help, security, and closeness). Survey data from 587 Swedish upper elementary school students (56.22% girls; M
age = 11.72, SD = 0.96) across 54 classrooms was collected and analyzed using multilevel regression. Results showed that having at least one friend was negatively associated with victimization and that victimization was less prevalent in classrooms where students experienced a shared sense of community. Furthermore, while high-quality friendships were associated with less victimization at both the individual and classroom level, when the five dimensions where considered, only conflictual and helpful friendships were significantly associated with victimization (on both levels of analysis for conflictual friendships and only on the individual level for helpful friendships). Together these results highlights the importance of schools helping students cultivate high-quality friendships, teaching constructive conflict management and promoting a more prosocial classroom community.