bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of non-local thermoelasticity on diffusion under hydrostatic pressure
Authors: Khader S. E. , Marrouf A. A. , Esmail S. , Khedr M. 
Published: March 2024

AbstractIn this paper, thermoelastic diffusion theory is demonstrated on a two-dimensional half-space problem. The surface is subjected to thermal shock and hydrostatic loads. The chemical potential must be a known function of time. The solution is obtained by the direct method using the Laplace technique and the Fourier exponential transform. Local and non-local thermoelasticity are discussed, and the influence of non-local parameters on the general theory of thermoelastic diffusion is investigated. Chemical potential, concentration, temperature, stress and displacement distributions are calculated numerically and displayed graphically.
Exploring pore-scale production characteristics of oil shale after CO2 huff ‘n’ puff in fractured shale with varied permeability
Authors: Xu Tianhan , Wang Jian , Lu Yuhao , Wang Danling , Yu Li , Tian Ye 
Published: March 2024

AbstractRecent studies have indicated that the injection of carbon dioxide (CO2) can lead to increased oil recovery in fractured shale reservoirs following natural depletion. Despite advancements in understanding mass exchange processes in subsurface formations, there remains a knowledge gap concerning the disparities in these processes between the matrix and fractures at the pore scale in formations with varying permeability. This study aims to experimentally investigate the CO2 diffusion behaviors and in situ oil recovery through a CO2 huff ‘n’ puff process in the Jimsar shale oil reservoir. To achieve this, we designed three matrix-fracture models with different permeabilities (0.074 mD, 0.170 mD, and 0.466 mD) and experimented at 30 MPa and 91 °C. The oil concentration in both the matrix and fracture was monitored using a low-field nuclear magnetic resonance (LF-NMR) technique to quantify in situ oil recovery and elucidate mass-exchange behaviors. The results showed that after three cycles of CO2 huff ‘n’ puff, the total recovery degree increased from 30.28% to 34.95% as the matrix permeability of the core samples increased from 0.074 to 0.466 mD, indicating a positive correlation between CO2 extraction efficiency and matrix permeability. Under similar fracture conditions, the increase in matrix permeability further promoted CO2 extraction efficiency during CO2 huff ‘n’ puff. Specifically, the increase in matrix permeability of the core had the greatest effect on the extraction of the first-cycle injection in large pores, which increased from 16.42% to 36.64%. The findings from our research provide valuable insights into the CO2 huff ‘n’ puff effects in different pore sizes following fracturing under varying permeability conditions, shedding light on the mechanisms of CO2-enhanced oil recovery in fractured shale oil reservoirs.
Endurance results of a refuels fleet test in a real application based on directly comparable truck test pairs
Authors: Toedter Olaf , Weyhing Thomas , Koch Thomas , Fritzsche Markus , Rodrigues Carlos , Dörr Sebastian , Stöhr Alexander , Weissert Roland , Hübeler Jörg , Behrens Carmen 
Published: March 2024

AbstractSynthetic fuels from a renewable base are an essential part of a greenhouse gas-neutral mobility, especially in transport sector. While scaling production of e-fuels (fuels based on electrolysis hydrogen) is ongoing, HVO called paraffinic diesel fuels are already available. Their production is based on the hydrogenation of waste and residues and they are established as diesel substitute in several applications. With regard to the approval of these fuels in German regulation, the question repeatedly arises as to whether they can be used easily and what effects can be achieved. This article describes an application in a real logistics application, in which both the everyday use and the concrete comparability to a refueling with conventional gas station diesel were ensured. The use of several parallel active and different truck pairs has shown that the use of HVO in existing vehicles has achieved the desired CO2 reduction. A detailed analysis of the engine oil also showed that no undesirable effects could be observed here either. From the perspective of this project, HVO fuels are ready for use for a significant greenhouse gas reduction in logistics.
The trends of major issues connecting climate change and the sustainable development goals
Authors: Hsieh Yi-Lin , Yeh Shin-Cheng 
Published: March 2024

AbstractThis study aims to explore the research trends and patterns of major issues connecting climate change and the Sustainable Development Goals (SDGs) by employing a bibliometric analysis. The study has found that there is an increasing number of research and policies in various countries committed to finding and implementing strategies to solve climate change issues. The countries with the most research in this field are China, India, the United States, the United Kingdom, and Australia, with Environmental Sciences & Ecology being the most published domain. The study has identified 19 clusters intersecting with climate change and SDGs, with the top five clusters in terms of proportion related to agricultural and food systems, water and soil resources, energy, economy, ecosystem, and sustainable management. This study also presents the trend changes of research topics intersecting climate change and SDGs every 2–3 years. Especially in the recent two years, with the convening of COP26 and COP27 and the advocacy of Net Zero and CBAM (Carbon Border Adjustment Mechanism) of the EU, important topics include renewable energy, protection of ecosystem services, life cycle assessment, food security, agriculture in Africa, sustainable management, synergies of various policies, remote sensing technology, and desertification among others. This shows an increasingly diversified range of important topics being discussed in relation to climate change and sustainable development goals.
Digitizing cities for urban weather: representing realistic cities for weather and climate simulations using computer graphics and artificial intelligence
Authors: Aliaga Daniel , Niyogi Dev 
Published: March 2024

AbstractDue to their importance in weather and climate assessments, there is significant interest to represent cities in numerical prediction models. However, getting high resolution multi-faceted data about a city has been a challenge. Further, even when the data were available the integration into a model is even more of a challenge due to the parametric needs, and the data volumes. Further, even if this is achieved, the cities themselves continually evolve rendering the data obsolete, thus necessitating a fast and repeatable data capture mechanism. We have shown that by using AI/graphics community advances we can create a seamless opportunity for high resolution models. Instead of assuming every physical and behavioral detail is sensed, a generative and procedural approach seeks to computationally infer a fully detailed 3D fit-for-purpose model of an urban space. We present a perspective building on recent success results of this generative approach applied to urban design and planning at different scales, for different components of the urban landscape, and related applications. The opportunities now possible with such a generative model for urban modeling open a wide range of opportunities as this becomes mainstream.
Determinants of successful mergers and acquisitions in China: evidence from machine learning
Authors: Zhou Shengdi , Lan Faqin , Hu Zirui , Liu Yongting 
Published: March 2024

AbstractBased on mergers and acquisitions data from Chinese firms listed on the Shanghai and Shenzhen stock exchanges spanning 2011 to 2021, we construct a dataset with 14 feature variables, covering deal characteristics, firm financial and non-financial traits, as well as external environmental factors. Employing machine learning techniques and Shapley Additive explanations value interpretation, we access the contribution of these variables for explaining the success or failure of M&A transactions. Our results highlight the superior performance of machine learning models, particularly the Gradient Boosting model and Random Forest model, compared to the traditional logistic model in predicting the success of M&A transactions. This holds true in both out-of-sample and out-of-time testing scenarios. Deal characteristics, especially the use of stock payments, emerge as pivotal determinants affecting M&A outcomes in the Chinese capital market, with a higher vulnerability to failure. The complexities arising from a politically uncertain environment magnify the intricacies of transactions, thereby increasing the likelihood of M&A failures. Interestingly, our analysis reveals the insignificance of market response in predicting the ultimate success of announced transactions, aligning with the Efficient Market Hypothesis. Furthermore, we identify an interactive effect involving the payment method of M&A, transaction size, and policy uncertainty. This study provides valuable insights into critical determinants of M&A transactions, offering strategic guidance to enhance success likelihood and facilitate sustainable corporate development in the future.
Navigating through Complexity by Profiling the Main Threats to Sustainable Tropical Wetlands Management and Governance: A Case Study of Mityana District, Uganda
Authors: Matovu Baker , Sarfo Isaac , Bbira Yasin , Yeboah Emmanuel , Muhoozi Yosia , Lukambagire Isaac 
Published: March 2024

AbstractWetlands are crucial ecosystems that promote sustainable livelihood and biodiversity conservation, especially in tropical regions. However, recent studies have reported increasing threats to wetlands both environmental and human which threaten the provision and acquisition of several wetland benefits. Though there is recognition of the value of wetlands, in most local communities in Uganda; especially around the Lake Wamala region in Mityana district, there is still limited knowledge and research on the benefits of wetlands and the level of threat thus affecting wetland governance. This research addresses this gap by using participatory research to create a baseline inventory that could be used by wetland managers to identify the main wetlands threats to inform policy on how to develop participatory actions and local area-based management practices. The study was conducted in 14 sub-counties and a sample of 105 wetlands along the wetlands of Lake Wamala and River Mayanja wetlands system in Mityana District was captured. Study findings revealed increased human threats to wetlands especially in the River Mayanja seasonal wetlands zone. The increased effects of environmental threats such as climate change are also altering permanent wetlands along Lake Wamala. Our developed inventory based on local participants' perspectives revealed that since the level of damage to wetlands in Mityana especially the permanent wetlands is relatively low, a focus on developing new mapping, and a decentralized approach to wetland management that focuses on capacity building, development of wetlands action plans, increased support to local wetland authorities, and a system thinking approach in wetland threat identification and management could help in the regeneration of most wetlands zones.
The big picture of sexual science
Authors: Chiang Howard 
Published: March 2024

AbstractThis article identifies a few paradigmatic ways whereby the big picture of sexual science has been made possible, especially through a diversification in the uneven but interconnected geography of scientific practice. It focuses on the ways in which the life and work of individual researchers, institutional settings and journal circulations have anchored the development of narratives about the history of sexual science. By delineating the shifting cultural geography, epistemological premise and conceptual innovations in sexological research, it is possible to cast the co-constituted nature of knowledge making as an enterprise simultaneously local and global in its reach. The rise of modern sexual science represented as much a gestalt counterpart to the evolutionary paradigm as a response to the shifting terrains of religious and legal governance in the regulation of sexuality.
Halls of Power: Changing Political and Administrative Culture at the Palace of Westminster in the Sixteenth Century
Authors: Biggs Elizabeth 
Published: March 2024

AbstractDuring the sixteenth century, the medieval Palace of Westminster went from being the most-used royal palace, where the king lived and worked alongside his administration, to becoming solely the home of the law-courts, Parliament, and the offices of state. At the same time, the numbers of individuals who came to the palace seeking governance or to take part in the business of the law-courts increased over the course of the century. While Westminster had earlier been a public venue for governance and royal display, the increasing absence of the English monarch from the palace created alternative uses. Political culture came to focus on Westminster as entirely separate from the court. This article explores how these changing uses created new forms of political and administrative culture. It examines how the administrative offices, particularly the Exchequer, were remade to accommodate changing financial demands and the increasing contact between individuals and the Crown. It argues that the repurposing of the Palace of Westminster created a distinctly different set of relationships between the Crown and the public. This gave the institutions that called the palace home the space to develop as bodies that drew their legitimacy from their representation of the community of the realm as a whole.
DAEDALA IMAGO AND THE IMAGE OF THE WORLD IN LUCRETIUS’ PROEM (1.5–8)
Authors: Hasegawa Alexandre 
Published: March 2024

AbstractThis article aims to discuss how Lucretius arranges the four ‘roots’ at the end of successive lines of verse in the De rerum natura (henceforth, DRN) (1.5–8). In this passage Lucretius, alluding to Empedocles, puts the words in such an order that one can see the layers of the world by a vertical reading. In the same passage, Lucretius imitates the very beginning of Homer's ecphrasis (Il. 18.478–85), which the allegorical tradition will explain as an image of the world, related to Empedoclean theory. The article also discusses the allusion to Daedalus by means of the adjective daedalus in DRN 1.7 (daedala tellus), which could be related to both Empedocles and Homer. This adjective is a keyword for discussing the image produced by the words on the written page.
Blood, obsidian, and the Teotihuacan cult of the mirror
Authors: Barnes Trenton D. 
Published: March 2024

AbstractDrawing upon iconological theory, this article argues that mirrors and blood were regarded as a conceptually linked pair within the imperial ideology of Teotihuacan, Mexico from the second century onward. The relationship between blood and mirrors is shown to have codified with the construction of the Pyramid of the Feathered Serpent, Teotihuacan's third largest edifice. This monument's facade was adorned with hundreds of monumental sculptures of oracular mirrors, some number of which incorporated actual mirrors formed of obsidian. I demonstrate that the Teotihuacan mirror sign took obsidian, a form of black volcanic glass that was intensively worked in the city, as a key referent. This monument was also the site of a historically large human sacrifice of more than 200 individuals, an event argued here to have involved bloodletting with obsidian knives and blades. I note that Teotihuacan interest in the mirror icon increased in concert with the city's residents’ application of the reflective material of obsidian to warring and other blood-spilling behaviors. The mirror icon evoked both obsidian as a radiant material, as well as obsidian's potential for application to forceful martial actions. The article concludes that this icon in part signified imperial force, which was made real through the weaponization of the smoking glass.
Estimation of the inferior caval vein saturation using high-fidelity non-invasive haemodynamic values and validation of modelled estimates
Authors: Loomba Rohit S. , Flores Saul , Farias Juan S. , Villarreal Enrique G. , Constas Alex 
Published: March 2024

AbstractObjectives:Monitoring venous saturation allows identification of inadequate systemic oxygen delivery. The aim was to develop a model using non-invasive haemodynamic variables to estimate the inferior caval vein saturation and to determine its prognostic utility.Methods:This is a single-centre, retrospective study. A Bayesian Pearson’s correlation was conducted to model the inferior caval vein saturation. Next, a Bayesian linear regression was conducted for data from all the patients and from only those with parallel circulation. Venous saturation estimations were developed. The correlation of these estimates to the actual inferior caval vein saturation was assessed. The resulting models were then applied to two validation cohorts: biventricular circulation (arterial switch operation) and parallel circulation (Norwood operation).Results:One hundred and thirteen datasets were collected across 15 patients. Of which, 65% had parallel circulation. In all patients, the measured and estimated inferior caval vein saturations had a moderate and significant correlation with a coefficient of 0.64. In patients with parallel circulation, the measured and estimated inferior caval vein saturation had a moderate and significant correlation with a coefficient of 0.61. In the biventricular circulation cohort, the estimated inferior caval vein saturation had an area under the curve of 0.71 with an optimal cut-off of 49. In the parallel circulation cohort, the estimated interior caval vein saturation had an area under the curve of 0.83 with an optimal cut-off of 24%.Conclusion:The inferior caval vein saturation can be estimated utilising non-invasive haemodynamic data. This estimate has correlation with measured inferior caval vein saturations and offers prognostic utility.
Substantial Differences in Crop Yield Sensitivities Between Models Call for Functionality‐Based Model Evaluation
Authors: Müller Christoph , Jägermeyr Jonas , Franke James A. , Ruane Alex C. , Balkovic Juraj , Ciais Philippe , Dury Marie , Falloon Pete , Folberth Christian , Hank Tobias , Hoffmann Munir , Izaurralde R. Cesar , Jacquemin Ingrid , Khabarov Nikolay , Liu Wenfeng , Olin Stefan , Pugh Thomas A. M. , Wang Xuhui , Williams Karina , Zabel Florian , Elliott Joshua W. 
Published: March 2024

AbstractCrop models are often used to project future crop yield under climate and global change and typically show a broad range of outcomes. To understand differences in modeled responses, we analyzed modeled crop yield response types using impact response surfaces along four drivers of crop yield: carbon dioxide (C), temperature (T), water (W), and nitrogen (N). Crop yield response types help to understand differences in simulated responses per driver and their combinations rather than aggregated changes in yields as the result of simultaneous changes in various drivers. We find that models' sensitivities to the individual drivers are substantially different and often more different across models than across regions. There is some agreement across models with respect to the spatial patterns of response types but strong differences in the distribution of response types across models and their configurations suggests that models need to undergo further scrutiny. We suggest establishing standards in model evaluation based on emergent functionality not only against historical yield observations but also against dedicated experiments across different drivers to analyze emergent functional patterns of crop models.
How Does the Southern Annular Mode Control Surface Melt in East Antarctica?
Authors: Saunderson Dominic , Mackintosh Andrew N. , McCormack Felicity S. , Jones Richard S. , van Dalum Christiaan T. 
Published: March 2024

AbstractSurface melt in East Antarctica is strongly correlated with the Southern Annular Mode (SAM) index, but the spatiotemporal variability of the relationship, and the physical processes responsible for it, have not been examined. Here, using melt flux estimates and climate variables from the RACMO2.3p3 regional climate model, we show that a decreasing SAM index is associated with increased melt in Dronning Maud Land primarily owing to reduced precipitation and greater absorption of solar radiation. Conversely, in Wilkes Land, a decreasing SAM index corresponds to increased melt because of greater incoming longwave radiation from a warmer atmosphere. We also demonstrate that SAM‐melt correlations are strongest in December as the melt season develops, and that the SAM’s influence on peak melt intensities in January occurs indirectly through the snowmelt‐albedo feedback. Future work must account for such variability in the physical processes underlying the SAM‐melt relationship to reduce uncertainty in surface melt projections.
Geologic Controls on Apparent Root‐Zone Storage Capacity
Authors: Hahm W. J. , Dralle D. N. , Lapides D. A. , Ehlert R. S. , Rempe D. M. 
Published: March 2024

AbstractThe water storage capacity of the root zone can determine whether plants survive dry periods and control the partitioning of precipitation into streamflow and evapotranspiration. It is currently thought that top‐down, climatic factors are the primary control on this capacity via their interaction with plant rooting adaptations. However, it remains unclear to what extent bottom‐up, geologic factors can provide an additional constraint on storage capacity. Here we use a machine learning approach to identify regions with lower than climatically expected apparent storage capacity. We find that in seasonally dry California these regions overlap with particular geologic substrates. We hypothesize that these patterns reflect diverse mechanisms by which substrate can limit storage capacity, and highlight case studies consistent with limited weathered bedrock extent (melange in the Northern Coast Range), toxicity (ultramafic substrates in the Klamath‐Siskiyou region), nutrient limitation (phosphorus‐poor plutons in the southern Sierra Nevada), and low porosity capable of retaining water (volcanic formations in the southern Cascades). The observation that at regional scales climate alone does not “size” the root zone has implications for the parameterization of storage capacity in models of plant dynamics (and the interrelated carbon and water cycles), and also underscores the importance of geology in considerations of climate‐change induced biome migration and habitat suitability.