bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal operation of the dam reservoir in real time based on generalized structure of group method of data handling and optimization technique
Authors: Mansouri Sedighe , Fathian Hossein , Nikbakht Shahbazi Alireza , Asadi Lour Mehdi , Asareh Ali 
Published: April 2024

AbstractThe historical data on water intake into the reservoir is collected and used within the framework of a deterministic optimization method to determine the best operating parameters for the dam. The principles that have been used to extract the best values of the flow release from the dam may no longer be accurate in the coming years when the inflow to dams will be changing, and the results will differ greatly from what was predicted. This represents this method’s main drawback. The objective of this study is to provide a framework that can be used to guarantee that the dam is running as efficiently as possible in real time. Because of the way this structure is created, if the dam’s inflows change in the future, the optimization process does not need to be repeated. In this case, deep learning techniques may be used to restore the ideal values of the dam’s outflow in the shortest amount of time. This is achieved by accounting for the environment’s changing conditions. The water evaluation and planning system simulator model and the MOPSO multi-objective algorithm are combined in this study to derive the reservoir’s optimal flow release parameters. The most effective flow discharge will be made feasible as a result. The generalized structure of the group method of data handling (GSGMDH), which is predicated on the results of the MOPSO algorithm, is then used to build a new model. This model determines the downstream needs and ideal release values from the reservoir in real time by accounting for specific reservoir water budget factors, such as inflows and storage changes in the reservoir. Next, a comparison is drawn between this model’s performance and other machine learning techniques, such as ORELM and SAELM, among others. The results indicate that, when compared to the ORELM and SAELM models, the GSGMDH model performs best in the test stage when the RMSE, NRMSE, NASH, and R evaluation indices are taken into account. These indices have values of 1.08, 0.088, 0.969, and 0.972, in that order. It is therefore offered as the best model for figuring out the largest dam rule curve pattern in real time. The structure developed in this study can quickly provide the best operating rules in accordance with the new inflows to the dam by using the GSGMDH model. This is done in a way that makes it possible to manage the system optimally in real time.
Analysis of the impacts of climate change, physiographic factors and land use/cover on the spatiotemporal variability of seasonal daily mean flows in southern Quebec (Canada)
Authors: Assani Ali A. 
Published: April 2024

AbstractThe objective of this study is to compare the spatiotemporal variability of seasonal daily mean flows measured in 17 watersheds, grouped into three homogeneous hydroclimatic regions, during the period 1930–2023 in southern Quebec. With regard to spatial variability, unlike extreme daily flows, seasonal daily mean flows are very poorly correlated with physiographic factors and land use and land cover. In fall, they are not correlated with any physiographic or climatic factor. In winter, they are positively correlated with the rainfall and winter daily mean maximum temperatures. In spring, they are strongly correlated positively with the snowfall but negatively with the spring daily mean maximum temperatures. However, in summer, they are better correlated with forest area and, to a lesser extent, with the rainfall. As for their temporal variability, the application of six different statistical tests revealed a general increase in daily mean flows in winter due to early snowmelt and increased rainfall in fall. In summer, flows decreased significantly in the snowiest hydroclimatic region on the south shore due to the decrease in the snowfall. In spring, no significant change in flows was globally observed in the three hydroclimatic regions despite the decrease in the snowfall due to the increase in the rainfall. In fall, flows increased significantly south of 47°N on both shores due to the increase in the rainfall. This study demonstrates that, unlike extreme flows, the temporal variability of seasonal daily average flows is exclusively influenced by climatic variables in southern Quebec. Due to this influence, seasonal daily mean flows thus appear to be the best indicator for monitoring the impacts of changes in precipitation regimes and seasonal temperatures on river flows in southern Quebec.
Constraint reconciliation optimization to minimize primary and reactionary delay in a research network strategic tool
Authors: Berling Jan , Lau Alexander , Gollnick Volker 
Published: April 2024

AbstractWhen regulated network capacities are violated, flights may be delayed to meet time-based slot restrictions. In addition, reactionary delays occur when time buffers to subsequent flight legs are exceeded. This work aims to minimize both—primary and reactionary delays in a dynamic simulation of the European Air Transportation System. The slot allocation process is solved by minimizing network delay with a binary optimization approach instead of using the current first-planned–first-served principle. The new module presented in this study, called constraint reconciliation and optimization (CRO), is applied within EUROCONTROL’s Research Network Strategic Tool (R-NEST). The results are compared to delays generated by R-NEST’s computer-aided slot allocation (ISA–CASA). In simulations of tactical air traffic flow management (ATFM) operations, time is iterated over the day and flight plans are updated with random and propagated delays. The computational complexity of all possible delay- and slot-entry-permutations is reduced by the method of column generation for solving large linear problems. Three validation scenarios that contain flight plans, rotation margins, sector configurations, regulations, and deterministic or stochastic delays are evaluated. In the most realistic scenario, compared to ISA–CASA, CRO reduces primary and reactionary delays by up to 16% while achieving low levels of airspace sector and airport overloads and fast computation times.
Human mesenchymal stromal cells-laden crosslinked hyaluronic acid-alginate bioink for 3D bioprinting applications in tissue engineering
Authors: Galocha-León Cristina , Antich Cristina , Voltes-Martínez Ana , Marchal Juan A. , Mallandrich Mireia , Halbaut Lyda , Souto Eliana B. , Gálvez-Martín Patricia , Clares-Naveros Beatriz 
Published: April 2024

AbstractThree-dimensional (3D) bioprinting is considered one of the most advanced tools to build up materials for tissue engineering. The aim of this work was the design, development and characterization of a bioink composed of human mesenchymal stromal cells (hMSC) for extrusion through nozzles to create these 3D structures that might potentially be apply to replace the function of damaged natural tissue. In this study, we focused on the advantages and the wide potential of biocompatible biomaterials, such as hyaluronic acid and alginate for the inclusion of hMSC. The bioink was characterized for its physical (pH, osmolality, degradation, swelling, porosity, surface electrical properties, conductivity, and surface structure), mechanical (rheology and printability) and biological (viability and proliferation) properties. The developed bioink showed high porosity and high swelling capacity, while the degradation rate was dependent on the temperature. The bioink also showed negative electrical surface and appropriate rheological properties required for bioprinting. Moreover, stress-stability studies did not show any sign of physical instability. The developed bioink provided an excellent environment for the promotion of the viability and growth of hMSC cells. Our work reports the first-time study of the effect of storage temperature on the cell viability of bioinks, besides showing that our bioink promoted a high cell viability after being extruded by the bioprinter. These results support the suggestion that the developed hMSC-composed bioink fulfills all the requirements for tissue engineering and can be proposed as a biological tool with potential applications in regenerative medicine and tissue engineering.
Graphical abstract
Improving the dynamic behaviour of historic buildings using experimental data: application to a Baroque church
Authors: Ceravolo Rosario , Lenticchia Erica , Miraglia Gaetano , Scussolini Linda 
Published: April 2024

AbstractVibration-based Structural Health Monitoring represents an efficient and reliable tool to build models that can predict the dynamic behaviour of heritage structures for, but not limited to, monitoring purposes. Indeed, built heritage consists of unique structures often characterized by high fragility, and the design of interventions implies several challenges, also related to restrictions on the application of modern regulations. In this context, the corroboration of the mechanical model should accompany the entire process, from design to implementation, with test campaigns performed before and after the strengthening operations to assess their effectiveness. Thus, the work presents the experimental process used for the tailoring of the seismic upgrading interventions on the church of Santa Caterina, in Casale Monferrato. More recently, the model has been updated with the results acquired from a permanent monitoring system installed in 2022, following the interventions, hence allowing assessments of their effectiveness.
On strong algebrability of families of non-measurable functions of two variables
Authors: Głąb Szymon , Lichman Mateusz , Pawlikowski Michał 
Published: April 2024

AbstractRecently Tomasz Natkaniec in (Natkaniec in Rev R Acad Cenc Exactas Fís Nat Ser A Mat RACSAM, 115(1):10, 2021) studied the lineability problem for several classes of non-measurable functions in two variables. In this note we improve his results in the direction of algebrability. In particular, we show that most of the classes considered by Natkaniec contain free algebras with $$2^\mathfrak c$$

2
c

many generators.
Torsion primes for elliptic curves over degree 8 number fields
Authors: Khawaja Maleeha 
Published: April 2024

AbstractLet $$d\ge 1$$

d
≥
1

be an integer and let p be a rational prime. Recall that p is a torsion prime of degree d if there exists an elliptic curve E over a degree d number field K such that E has a K-rational point of order p. Derickx et al. (Algebra Number Theory 17(2):267–308, 2023) have computed the torsion primes of degrees 4, 5, 6 and 7. We verify that the techniques used in Derickx et al. (Algebra Number Theory 17(2):267–308, 2023) can be extended to determine the torsion primes of degree 8.
Environmental impacts of materials in masonry residential house
Authors: Estokova Adriana , Fabianova Martina 
Published: April 2024

AbstractThis study aims to quantify the environmental impact of a specific family home, with a particular focus on its contribution to climate change. To achieve a more precise assessment, the family home was dissected into various components based on the materials’ function and their location within the structure. The evaluation was conducted using the life cycle assessment (LCA) methodology, considering the “cradle to site” boundaries and utilizing the IPCC GWP100 method. The cumulative contribution of the materials used in the selected house to climate change was found to be 125,000 kg CO2 equivalent (CO2eq). When analyzing the global warming potentials (GWP100) of individual building structures, the calculated values ranged from 3.8 to 62.2 kg CO2eq. The results indicate that the materials for horizontal structures had the lowest global warming potential values, while materials for vertical structures had the highest values. Particular attention was paid to comparing three different ways of transporting materials to the site. The portion of climate change attributable to transportation fell within a range of 10.9–12.3%. Findings verified that road transportation consistently made the greatest contribution to the overall GWP100, regardless of distance, with rail transportation yielding the lowest values. Discrepancies between the highest and lowest values of transport-related GWP100 were determined to be as much as 9.1%. Opting for the most environmentally friendly option, namely rail in this study, could result in savings of 4.9 kg CO2eq per 1 km of transportation distance for the analyzed building materials used per family house.
Evaluating tracemaker recovery after the Cretaceous–Paleogene (K–Pg) boundary event: different biotic responses at the Caravaca section
Authors: Rodríguez-Tovar F. J. 
Published: April 2024

AbstractTrace fossils are an aid to characterize major extinction events, enriching evolutionary paleoecology research. Ichnological analysis at the Cretaceous–Paleogene (K–Pg) marine boundary interval, worldwide, points to a relatively minor disruption in the macrobenthic tracemaker community; that is, trace-fossil assemblages do not change significantly across the K–Pg boundary, showing relatively rapid recovery, locally in just a few years post-impact. To evaluate the incidence of this event and the rapid recovery of the tracemaker community afterwards, the evolution of planktic and benthic groups at the K–Pg boundary interval was analysed in the Caravaca section (Betic Cordillera) based on the integration of available data. In general terms, planktic foraminifera and calcareous nannoplankton dropped in abundance and diversity at the K–Pg boundary, whereas benthic foraminifera did not show significant extinction, but rather a sudden and dramatic decrease in diversity and reorganization. After the K–Pg boundary event, planktic communities exhibit a prolonged delay in recovery—mainly occurring above the dark boundary layer—with respect to benthic foraminifera. The K–Pg boundary event did not induce a severe crisis for the burrowing macroinfauna, as revealed by the similarity between pre- and post-event ichnotaxa, showing a comparatively rapid first colonization phase, less than 2 ky after the event. The record of Zoophycos and Chondrites at the base of the dark boundary layer evidences an opportunistic behaviour of tracemakers and a high independence from oxygen in pore waters and food in the sediment, allowing for the colonization of an overall unfavorable environment.
A Job Demands–Resources Perspective on Emotional Exhaustion and Work Engagement in Human–Animal Work
Authors: Dlouhy Katja , Schmitt Antje , Kandel India J. 
Published: April 2024

AbstractPrior research has highlighted various psychological benefits and detriments associated with human–animal work, i.e., work that is substantially focused on living animals. However, systematic research that identifies both demands and resources across various occupations in this domain of work has been limited. To address this issue, we build on job demands–resources theory to identify job demands and resources that are characteristic of human–animal work and link them to health and motivational outcomes. Our study of 205 individuals who engage in human–animal work across different occupations shows that in terms of job demands, animal distress positively relates to workers’ emotional exhaustion, but the occupational stigma of human–animal work does not. Regarding job resources, we find that pro-animal impact and human–animal bond both positively relate to work engagement, explaining additional variance in work engagement beyond more general job resources. However, when animal distress is high, human–animal bond does no longer predict work engagement. We discuss implications of our study for job demands–resources theory, research on occupational stigma, and the field of human–animal work.
U.S. strategy of damage limitation vis-à-vis China: long-term programs and effects
Authors: Li Bin , Wu Riqiang 
Published: April 2024

AbstractA number of U.S. military programs, if successfully developed and deployed, could undermine China's nuclear retaliatory capabilities, thereby enhancing U.S. damage limitation capabilities vis-à-vis China. Meanwhile, China seeks to maintain the credibility of its nuclear retaliatory capabilities and increase the survivability and penetration of its nuclear weapons. These interactions are part of the nuclear competition between the United States and China. This article discusses three cases: the U.S. homeland missile defense system, anti-submarine warfare (ASW) preparations, and the space-based Ground Moving Target Indicator. These programs may serve declaratory purposes in one way or another, but their development has had a negative impact on China’s strategic nuclear retaliatory capabilities. Using non-nuclear means that differ technologically from the measures taken by China, these programs have created an asymmetric competition between the two sides. These U.S. programs have endured for several decades, and have continued to introduce new technologies despite occasional interruptions. The main element of development in these programs has been qualitative improvement, while quantitative increases have not always been evident. The development of these U.S. damage limitation capabilities put pressure on China’s nuclear retaliatory capabilities. The arms race theories developed during the Cold War are inadequate for fully understanding nuclear competition between the United States and China. We need new theories and wisdom to explore cooperative solutions.
The cyclic load effect on the elasticity and plasticity deformation of high-strength reinforced concrete elements
Authors: Bayat Hydayatullah , Chalecki Marek , Lesniewska Aleksandra , Maj Marek , Rybak Jaroslaw , Ubysz Andrzej 
Published: April 2024

AbstractThis article investigates the degradation of stiffness in high and standard-strength concrete due to the influence of repeated loading and considers the non-linear behavior arising from localized or natural defects of concrete. The article also refers to the models from existing literature that evaluate the characteristics of concrete by enhancing its physicochemical properties through the application of natural and synthetic fibers. The impact of the service load, which influences the change in concrete stiffness, is illustrated using the elastic–plastic concrete model. The elastic–plastic model of concrete, combined with experimentally determined data such as elastic and residual deformations, simplifies the analysis of concrete beams or surface elements. This model enables static solutions of inelastic materials based on the classical theory of elasticity. The degradation of element stiffness in this model is described by the local increment of the rotation angle. Based on the model we can assume a constant stiffness along the length of the beam before as well as after exceeding the value of the cracking moment. In the case of cyclic loads, it can be assumed that residual deformations have the greatest influence on the displacement values, which in the calculation model are described by the component of the angle of rotation in the crack, describing permanent displacements.
Behavioral models of drivers in developing countries with an agent-based perspective: a literature review
Authors: Gracian Vishal A. , Galland Stéphane , Lombard Alexandre , Martinet Thomas , Gaud Nicolas , Zhao Hui , Yasar Ansar-Ul-Haque 
Published: April 2024

AbstractThe traffic in developing countries presents its own specificity, notably due to the heterogeneous traffic and a weak-lane discipline. This leads to differences in driver behavior between these countries and developed countries. Knowing that the analysis of the drivers from developed countries leads the design of the majority of driver models, it is not surprising that the simulations performed using these models do not match the field data of the developing countries. This article presents a systematic review of the literature on modeling driving behaviors in the context of developing countries. The study focuses on the microsimulation approaches, and specifically on the multiagent paradigm, that are considered suitable for reproducing driving behaviors with accuracy. The major contributions from the recent literature are analyzed. Three major scientific challenges and related minor research directions are described.
Nexus between carbon stock, biomass, and CO2 emission of woody species composition: evidence from Ise-Ekiti Forest Reserve, Southwestern Nigeria
Authors: Dada Adebowale D. , Matthew Olaniran J. , Odiwe Anthony I. 
Published: April 2024

AbstractThe carbon stock, biomass, and CO2 emissions in woody species play crucial roles in understanding and managing ecosystems. Understanding these aspects is crucial for sustainable forest management, conservation, and mitigating the impact of woody species on global carbon dynamics and climate change. This study examined the nexus between carbon stock, biomass, and CO2 emission of woody plant composition in disturbed and undisturbed areas in Southwestern Nigeria. The study involved the random establishment of plots in the disturbed and undisturbed areas and, in each plot, the woody plants were enumerated and identified to the species level. The results showed that total biomass (102.645 Mg ha-1), total carbon stock (51.323 Mg C ha-1), and total CO2 emission (188.354 Mg C ha-1) values of tree species in undisturbed plots were higher than the values of total biomass (70.768 Mg ha-1), total carbon stock (35.384 Mg C ha-1), and total CO2 emission (129.859 Mg C ha-1) recorded in disturbed plots. The results also revealed that total biomass (0.123 Mg ha-1), total carbon stock (0.061 Mg C ha-1), and total CO2 emission (0.225 Mg C ha-1 ) values of shrub species recorded in disturbed plots were higher than values of total biomass (0.067 Mg ha-1), total carbon stock (0.034 Mg C ha-1) and total CO2 content (0.124 Mg C ha-1) recorded in undisturbed plots, respectively. The findings showed that in undisturbed and disturbed plots of shrubs, biomass, carbon and CO2 emissions have a strong positive correlation of 1.000**. While biomass, carbon, and CO2 emission have a very strong positive correlation (0.999**) in undisturbed plots of trees, the biomass, carbon, and CO2 emission have moderate to strong positive correlations (0.458** to 0.974**) in disturbed plots of the tree. The study concluded that while biomass, carbon stock, and CO2 emission values of tree species were higher in undisturbed plots than in disturbed plots, the biomass, carbon stock, and CO2 emission values of shrub species were lower in undisturbed plots than in disturbed plots. It also concluded that the main purpose of establishing reserve forests is not totally achieved as human activities occurring in reserve forests still contribute to the increment of climate change.