Search

This study analyzes coupled atmosphere-ocean variability in the South Atlantic Ocean. To do so, we characterize the spatio-temporal variability of annual mean sea-surface temperature (SST) and sea-level pressure (SLP) using Multichannel Singular Spectrum Analysis (M-SSA). We applied M-SSA to ERA5 reanalysis data (1959-2022) of South Atlantic SST and SLP, both individually and jointly, and identified a nonlinear trend, as well as two climate oscillations. The leading oscillation, with a period of 13 years, consists of a basin-wide southwest-northeast dipole and is observed both in the individual variables and in the coupled analysis. This mode is reminiscent of the already known South Atlantic Dipole, and it is probably related to the Pacific Decadal Oscillation and to El Niño-Southern Oscillation in the Pacific Ocean. The second oscillation has a 5-year period and also displays a dipolar structure. The main difference between the spatial structure of the decadal, 13-year, and the interannual, 5-year mode is that, in the first one, the SST cold tongue region in the southeast Atlantics Cape Basin is included in the pole closer to the equator. Together, these two oscillatory modes, along with the trend, capture almost 40% of the total interannual variability of the SST and SLP fields, and of their co-variability. These results provide further insights into the spatio-temporal evolution of SST and SLP variability in the South Atlantic, in particular as it relates to the South Atlantic Dipole and its predictability.

Abstract We elaborate further on the one-loop effective action of the IKKT model on 3 + 1 dimensional covariant quantum spacetime in the presence of fuzzy extra dimensions. In particular, we describe the one-loop effective action in terms of a remarkable SO(1, 9) character, which allows to evaluate the pertinent traces over the internal modes explicitly. This also allows to estimate the higher-order contributions (in the internal flux F IJ $$ {\mathcal{F}}_{\textrm{IJ}} $$ ) to the one-loop effective action in a systematic way. We show that all higher-order contributions are generally suppressed and UV finite, which justifies the previous treatment of the induced gravitational action. We also obtain explicit expressions for the effective Newton constant, and determine the dynamics of the Kaluza-Klein scale ∆ K $$ {\Delta }_{\mathcal{K}} $$ of the fuzzy extra dimensions K $$ \mathcal{K} $$ .

This study investigates how organizational contingency factors, namely company size, environmental uncertainty, technological capacity, and organizational structure, affect the design and effectiveness of management control systems (MCS) in Moroccan industrial companies. Drawing on contingency theory, which emphasizes the alignment of organizational systems with contextual factors, this research applies quantitative methods to a sample of 190 industrial firms in Morocco, achieving a 76% response rate to the distributed surveys. The data are analyzed using correlation and linear regression techniques to explore these relationships. The findings reveal that larger firms, those operating in dynamic and uncertain environments, and those with advanced technological systems tend to implement more sophisticated, integrated, and participative MCS. Furthermore, flexible and decentralized organizational structures significantly enhance the adoption of adaptive control systems. These results underscore the importance of tailoring MCS to organizational characteristics and environmental conditions, particularly in emerging market contexts. This study’s novel contribution lies in its application of contingency theory to a non-Western industrial context, addressing a gap in the literature by demonstrating how specific regional factors influence MCS practices. This research offers practical insights for Moroccan industrial firms seeking to improve their operational efficiency, adaptability, and strategic decision making in volatile markets.

The phenomenon of informality, in all three of its forms: envelope wages, dependent workers, and workers without formal contracts, represents a complex aspect of the modern economy, having significant impact on regional development and society. The main objective of this study is to understand this phenomenon in both microeconomic and macroeconomic contexts, exploring the interactions between individual and structural factors that influence the evolution and scale of the informal economy across different regions. While the classical approach typically involves multilevel models to analyse such data, this study employs the Random Forest method due to its ability to handle data complexity and variability efficiently and robustly. The profile of informal workers, regardless of their employment form (no formal contract, envelope wages, or dependent workers), reveals both common traits and notable differences. While all share low fiscal morality, extended social networks, and a general distrust of authorities, they differ significantly in terms of company size, demographics, and political inclination, highlighting the complexity and diversity of informal labour and the need for tailored approaches to address these workers.

The main purpose of this paper is to analyze the interest in the field of university-industry partnerships for sustainable development. The research methodology involves conducting a bibliometric analysis based on a quantitative research method, in the form of an inventory of publishing activities in the chosen field for study. The analysis consisted of querying the database available on the Web of Science platform, which includes journals, scientific papers, books, and other documentation. The query resulted in displaying a total of 65 scientific documents existing in the database. The results obtained from the analysis of the data collected from Web of Science using VOSviewer software highlight the most cited articles, journals, and authors, as well as the existence of strong connections between universities and industries for sustainable development. The United States and China have been the primary producers of publications in this domain, each with seven works, followed by Australia (4) and England (3). The keyword-based analysis highlighted frequently used terms such as "University-industry collaboration," "sustainability," "triple helix," "management," and "innovation." The most cited author in this field is Etzkowitz H. from the International Triple Helix Institute in the United States, and one of the most cited articles is co-authored with Zhou, C.Y. from Hohai University, proposing a Triple Helix model of university-public-government for sustainable development, complementing the university-industry-government Triple Helix for innovation. This bibliometric analysis not only emphasizes the present but also tracks the evolution of researchers' areas of interest in the field of the university-industry relationship for sustainable development.

This study explores the trends and limitations of research on the Common Agricultural Policy (CAP) in relation to agriculture, economy, and the environment, using a bibliometric analysis based on Web of science data. Employing co-citation maps and collaborative networks among authors and institutions, the study highlights a fragmented literature characterized by high thematic specialization and a low level of interconnectedness among researchers, hindering the development of a coherent and integrated framework. A detailed analysis of author collaborations and co-citation networks provides a clear view of the intellectual structure of the field and the ways ideas and research have been interconnected and developed over time. Additionally, the examination of highly cited articles and works has revealed not only the current gaps in research but also opportunities for future investigations. For instance, most studies have focused on the effects of Common Agricultural Policy (CAP) funding on the environment, biodiversity, farmer behaviour, and the economic outcomes of the agricultural sector. However, they have largely overlooked a comprehensive understanding of how these interactions simultaneously influence all three dimensions: economic, environmental, and agricultural. This highlights a significant opportunity for research to explore more complex and integrated connections between CAP funding and its impact on these three pillars, considering the recent evolution and changes in the global economic landscape.

This study explores the trends and limitations of ESG research as applied to the banking sector, using a bibliometric analysis based on Scopus data. Using co-citation maps and collaborative networks between authors and institutions, the study highlights a fragmented literature with high thematic specialization and a low degree of interconnectedness between researchers, which limits the development of a coherent and integrated framework. The institutional analysis points to the existence of regional clusters, such as those in Spain, and an international group of prestigious but loosely interlinked institutions, indicating geographical isolation and a lack of comparative studies at a global level. Also, the differences in pace between recent and older research, accompanied by time lags, suggest a slow adaptation of some institutions to the new ESG paradigms, but also a continued evolution of academic collaborations. Despite these limitations, the maps highlight the importance of central institutions in updating research and integrating new ESG directions in banking. The study suggests the need for more extensive interdisciplinary and international research to overcome the barriers of specialization and isolation and to support a more comprehensive and integrated research framework.

Introduction: Nurses seem to be persistently experiencing intense psychological repercussions, even after the official conclusion of the COVID-19 pandemic. In this cross-sectional study conducted after the end of the pandemic crisis, from 1 June 2023 to 30 June 2023, we evaluated the levels and explored the associations between anger, insomnia, and resilience among Greek nurses. Methods: A total of 441 nurses participated in an online survey and were invited to state their work experience, gender, and age and to complete the self-report measures of the Dimensions of Anger Reactions-5 (DAR-5), the Athens Insomnia Scale (AIS), and the Brief Resilience Scale (BRS). Results: Overall, 62.1% of the participants presented with positive scores on the AIS, and 41.5% displayed positive values on the DAR-5 scale, whereas 24.9% demonstrated scores indicative of low resilience on the BRS. A regression analysis revealed that 23.5% of the variance in the AIS scores can be attributed to the DAR-5 scores and 3% to the BRS scores. A mediation analysis confirmed the protective role of resilience, contributing as a negative mediator in the DAR-5 and AIS relationship. Conclusions: Screening for insomnia symptoms and anger issues among nurses after the end of the pandemic and implementing appropriate interventions is considered imperative to avoid long-term health consequences.

ObjectiveThis study aimed to compare microRNA-21-5p expressions at the extraction wound in the maxillary bones of rats with medication-related osteonecrosis of the jaw (MRONJ) and normal rats at different time points.Materials and methodsIn total, 18 female, 8-week-old Sprague-Dawley rats were randomly assigned to the experimental group (n = 9) and the control group (n = 9). To establish MRONJ in the right maxillary first molar area in the experimental group, zoledronate (66 µg/kg) and dexamethasone (5 mg/kg) were administered intraperitoneally every other day for 2 weeks before tooth extraction. Normal saline was administered in the control group. After tooth extraction, the drugs were continuously administered until the experimental endpoints, namely 1, 14, and 28 days post-tooth extraction. At each endpoint, three rats from each group were euthanized. The maxilla bones at the wound area were harvested. A real-time polymerase chain reaction (RT-PCR) was performed to compare the expression levels of miRNA-21-5p at each time point between the MRONJ group and the control group.ResultsFrom their gross appearance, the rats that received zoledronate and dexamethasone developed MRONJ as demonstrated by non-healing wounds and exposed bone at 14 and 28 days post-extraction in contrast to the controls. The RT-PCR showed that the expression levels of miRNA-21-5p were relatively higher in the MRONJ rats compared to the control rats at day 14 and then the difference was lower at day 28 post-tooth extraction.ConclusionThe findings indicated that the microRNA-21-5p expression levels varied during the socket healing process in the MRONJ rats, reaching a peak at 2 weeks after tooth extraction.

In the context of current global challenges, the integration of digitalization, financial performance, and renewable energy is pivotal in fostering sustainable and resilient economic development. The aim of this paper is to explore the interplay between banking performance, digitalization, and renewable energy consumption in the context of the European Union (EU), with a focus on sustainable economic development. This study examines the extent to which the digitalization and efficiency of the banking sector influence the uptake of renewable energy considering the EU’s environmental and economic priorities. The methodology used involves an econometric analysis based on statistical data from EU countries, using Fully Modified Ordinary Least Squares (FMOLS) to assess causal relationships between variables, complemented by Vector Autoregression (VAR) models and Granger causality tests to further investigate the dynamic interactions among the variables. The data were analyzed to examine the correlation between banking performance, digitalization, and renewable energy consumption levels. The results reveal a positive correlation between greater digitalization in the banking sector, stronger financial performance, and higher investments in renewable energy sources. These factors also support the transition to a green economy, but the effect varies between EU countries depending on national policies and existing digital infrastructure. Recommendations for policymakers include stimulating digitalization in the financial sector, creating a regulatory framework to encourage green energy investments, and strengthening collaboration between financial institutions and the energy sector to facilitate the transition to renewables. This paper also suggests a fiscal policy conducive to technological innovation and digitalization to accelerate the uptake of renewable energy.

Liver dysfunction due to the use of hepatotoxic drugs such as paracetamol is still a problem, especially in the long term and in high doses. Natural products derived from plants are often used as hepatoprotective agents because of their potent antioxidant properties. Our study reports that ethanol extract of Mobe leaves (Artocarpus lacucha Buch-Ham) has the potential as a hepatoprotective agent. The artocarpin content that we analyzed using HPLC in Mobe leaves allows this activity. The test was carried out on paracetamol-induced rats by observing the decrease in ALT, AST, ALP, total bilirubin, total protein, LDH, and an increase in SOD levels in the blood serum of rats. The image of liver hepatocytes and the expression of IL 6, Caspase – 3, and TNF-α genes were also observed. The results showed that the administration of ethanol extract of Mobe leaves had lower levels of ALT, AST, ALP, total bilirubin and higher total protein compared to the group given 0.5 % Na-CMC suspension induced by paracetamol. Increased SOD levels and decreased LDH also occurred, followed by histopathological observations of the liver showing normal liver conditions and no inflammation even though induced by paracetamol. The percentage of Caspase – 3, IL-6, and TNF-α also experienced significant differences with the 0.5 % Na-CMC group. The content of secondary metabolites in Mobe has excellent potential in protecting and improving liver function. These findings are expected to be used as a guide to explore the benefits of the Mobe plant as a new protective agent.