bluuebunny/crossref_metadata_2025 huggingface dataset:
Rough-Set-Based Rule Induction with the Elimination of Outdated Big Data: Case of Renewable Energy Equipment Promotion
Authors: Huang Chun-Che , Liang Wen-Yau , Gung Roger R. , Wang Pei-An
Published: October 2023

As developing economies become more industrialized, the energy problem has become a major challenge in the twenty-first century. Countries around the world have been developing renewable energy to meet the Sustainable Development Goals (SDGs) of the United Nations (UN) and the 26th UN Climate Change Conference of the Parties (COP26). Leaders of enterprises have been made aware of the need to protect the environment and have been practicing environmental marketing strategies and green information systems (GISs) as part of ESG practices. With the rapid growth of the available data from renewable electricity suppliers, the analyses of multi-attribute characteristics across different fields of studies use data mining to obtain viable rule induction and achieve adaptive management. Rough set theory is an appropriate method for multi-attribute classification and rule induction. Nevertheless, past studies for Big Data analytics have tended to focus on incremental algorithms for dynamic databases. This study entails rough set theory from the perspective of the decrement decay alternative rule-extraction algorithm (DAREA) to explore rule induction and present case evidence with managerial implications for the emerging renewable energy industry. This study innovates rough set research to handle data deletion in a Big Data system and promotes renewable energy with valued managerial implications.
A Stereoselective Entry to Enantiopure (S)-2-Amino-2-methyl-5-arylpent-4-ynoic Acids and Evaluation of Their Inhibitory Activity against Bacterial Collagenase G
Authors: Hakobyan Hegine I. , Jamgaryan Silva M. , Sargsyan Armen S. , Danghyan Yuri M. , Larionov Vladimir A. , Maleev Victor I. , Saghyan Ashot S. , Mardiyan Zorayr Z.
Published: October 2023

Nowadays, amino acids (AAs) and peptides with bulky side chains hold significant interest for organic synthesis and the modern pharma industry. Non-proteinogenic (or unnatural) AAs are key building blocks used for obtaining pharmaceutically relevant peptides and for the development of chiral molecular catalysts, and they are extensively used in the total synthesis of complex natural compounds. Thus, an elaboration of cost-effective methods for the preparation of novel unnatural AAs to increase their structural diversity is highly desirable. In this context, herein, we present an asymmetric metal-templated synthesis of a number of enantiomerically pure (S)-2-amino-2-methyl-5-arylpent-4-ynoic acids starting from commercially available reagents and Belokon’s chiral auxiliary (S)-BPB, namely (S)-2-(N-benzylprolyl)aminobenzophenone. The construction of a chiral Ni(II) complex from alanine (Ala) and the subsequent propargylation, arylation by the Sonogashira cross-coupling reaction using various aryl halides, and, finally, an acidic decomposition of the obtained complexes deliver to the target complex α,α-disubstituted AAs featuring a triple bond in a side chain. Next, the Fmoc-protected α-AAs and dipeptide were synthesized. Finally, we examined the obtained α-AAs and peptide as collagenase inhibitors.
Exploring a Special Class of Bi-Univalent Functions: q-Bernoulli Polynomial, q-Convolution, and q-Exponential Perspective
Authors: Shaba Timilehin Gideon , Araci Serkan , Adebesin Babatunde Olufemi , Esi Ayhan
Published: October 2023

This research article introduces a novel operator termed q-convolution, strategically integrated with foundational principles of q-calculus. Leveraging this innovative operator alongside q-Bernoulli polynomials, a distinctive class of functions emerges, characterized by both analyticity and bi-univalence. The determination of initial coefficients within the Taylor-Maclaurin series for this function class is accomplished, showcasing precise bounds. Additionally, explicit computation of the second Hankel determinant is provided. These pivotal findings, accompanied by their corollaries and implications, not only enrich but also extend previously published results.
Dual-Matrix Domain Wall: A Novel Technique for Generating Permutations by QUBO and Ising Models with Quadratic Sizes
Authors: Nakano Koji , Tsukiyama Shunsuke , Ito Yasuaki , Yazane Takashi , Yano Junko , Kato Takumi , Ozaki Shiro , Mori Rie , Katsuki Ryota
Published: October 2023

The Ising model is defined by an objective function using a quadratic formula of qubit variables. The problem of an Ising model aims to determine the qubit values of the variables that minimize the objective function, and many optimization problems can be reduced to this problem. In this paper, we focus on optimization problems related to permutations, where the goal is to find the optimal permutation out of the n! possible permutations of n elements. To represent these problems as Ising models, a commonly employed approach is to use a kernel that applies one-hot encoding to find any one of the n! permutations as the optimal solution. However, this kernel contains a large number of quadratic terms and high absolute coefficient values. The main contribution of this paper is the introduction of a novel permutation encoding technique called the dual-matrix domain wall, which significantly reduces the number of quadratic terms and the maximum absolute coefficient values in the kernel. Surprisingly, our dual-matrix domain-wall encoding reduces the quadratic term count and maximum absolute coefficient values from n3−n2 and 2n−4 to 6n2−12n+4 and 2, respectively. We also demonstrate the applicability of our encoding technique to partial permutations and Quadratic Unconstrained Binary Optimization (QUBO) models. Furthermore, we discuss a family of permutation problems that can be efficiently implemented using Ising/QUBO models with our dual-matrix domain-wall encoding.
Smart-seq2 Technology Reveals a Novel Mechanism That Zearalenone Inhibits the In Vitro Maturation of Ovine Oocytes by Influencing TNFAIP6 Expression
Authors: Li Zongshuai , Liu Yali , Ma Tian , Lv Chen , Li Yina , Duan Hongwei , Zhao Xingxu , Wang Jianlin , Zhang Yong
Published: October 2023

Zearalenone (ZEN), a non-steroidal estrogenic fungal toxin widely present in forage, food, and their ingredients, poses a serious threat to animal and human reproductive health. ZEN also threatens ovine, a major source of human food and breeding stock. However, the mechanisms underlying the impact of ZEN on the in vitro maturation (IVM) of ovine oocytes remain unclear. This study aimed to elucidate these mechanisms using the Smart-seq2 technology. A total of 146 differentially expressed genes were obtained, using Smart-seq2, from sheep oocytes cultured in vitro after ZEN treatment. ZEN treatment inhibited RUNX2 and SPP1 expression in the PI3K signaling pathway, leading to the downregulation of THBS1 and ultimately the downregulation of TNFAIP6; ZEN can also decrease TNFAIP6 by reducing PTPRC and ITGAM. Both inhibit in vitro maturation of ovine oocytes and proliferation of cumulus cells by downregulating TNFAIP6. These findings provide data and a theoretical basis for elucidating ZEN’s toxicity mechanisms, screening therapeutic drugs, and reducing ZEN-related losses in the ovine industry.
Weak Adoption and Performance of Hepatitis B Birth-Dose Vaccination Programs in Africa: Time to Consider Systems Complexity?—A Scoping Review
Authors: Solomon-Rakiep Tasneem , Olivier Jill , Amponsah-Dacosta Edina
Published: October 2023

The persistent burden of chronic hepatitis B among ≤5-year-old children in Africa suggests missed opportunities for controlling mother-to-child transmission (MTCT) of the hepatitis B virus (HBV). This scoping review maps the evidence base on the risk of HBV MTCT, the status of HBV MTCT mitigation strategies including hepatitis B birth-dose vaccination, and the role of systems complexity on the suboptimal adoption and performance of hepatitis B birth-dose vaccination programs in Africa. Overall, 88 peer-reviewed and grey literature sources published between 2000–2022 were included in this review. The growing evidence base consistently argues for a heightened risk of HBV MTCT amidst the HIV co-epidemic in the region. Without universal HBV screening programs integrated within broader antenatal care services, current selective hepatitis B birth-dose vaccination is unlikely to effectively interrupt HBV MTCT. We underscore critical health systems-related barriers to universal adoption and optimal performance of hepatitis B birth-dose vaccination programs in the region. To better conceptualize the role of complexity and system-wide effects on the observed performance of the program, we propose an adapted systems-based logic model. Ultimately, exploring contextualized complex systems approaches to scaling-up universal hepatitis B birth-dose vaccination programs should form an integral part of the regional research agenda.
Surveillance, Prevention, Evolution and Control of Emerging Viruses: A 2022 Editorial Update
Authors: Vaslin Maite Freitas Silva , Arruda Luciana de Barros , Campos Fabricio Souza
Published: October 2023

The Special Issue “Emerging Viruses: Surveillance, Prevention, Evolution and Control” has been published annually by Viruses, since 2019, highlighting the increasing effort of the scientific community for the surveillance and further research of new emerging or re-emerging viruses [...]
The Cyclophilin Inhibitor Rencofilstat Decreases HCV-Induced Hepatocellular Carcinoma Independently of Its Antiviral Activity
Authors: Stauffer Winston , Bobardt Michael , Ure Daren , Foster Robert , Gallay Philippe
Published: October 2023

There is an urgent need for the identification of new drugs that inhibit HCV-induced hepatocellular carcinoma (HCC). Our work demonstrates that cyclophilin inhibitors (CypIs) represent such new drugs. We demonstrate that the nonimmunosuppressive cyclosporine A (CsA) analog (CsAa) rencofilstat possesses dual therapeutic activities for the treatment of HCV infection and HCV-induced HCC. Specifically, we show that the HCV infection of humanized mice results in the progressive development of HCC. This is true for the four genotypes tested (1 to 4). Remarkably, we demonstrate that rencofilstat inhibits the development of HCV-induced HCC in mice even when added 16 weeks after infection when HCC is well established. Importantly, we show that rencofilstat drastically reduces HCC progression independently of its anti-HCV activity. Indeed, the CypI rencofilstat inhibits HCC, while other anti-HCV agents such as NS5A (NS5Ai) and NS5B (NS5Bi) fail to reduce HCC. In conclusion, this study shows for the first time that the CypI rencofilstat represents a potent therapeutic agent for the treatment of HCV-induced HCC.
Use of Remdesivir in Patients Hospitalized for COVID-19 Pneumonia: Effect on the Hypoxic and Inflammatory State
Authors: Libra Alessandro , Ciancio Nicola , Sambataro Gianluca , Sciacca Enrico , Muscato Giuseppe , Marino Andrea , Vancheri Carlo , Spicuzza Lucia
Published: October 2023

Remdesivir is one of the most attractive options for patients with hypoxemic respiratory failure due to coronavirus disease 2019 (COVID-19). The aim of our study was to evaluate the effect of remdesivir on the hypoxic and inflammatory state in patients with moderate to severe COVID-19. We retrospectively enrolled 112 patients admitted for COVID-19 pneumonia, requiring low-flow oxygen, 57 treated with remdesivir plus standard of care (SoC) and 55 treated only with SoC that were similar for demographic and clinical data. We evaluated changes in hypoxemia and inflammatory markers at admission (Day 0) and after 5 days of treatment (Day 5) and the clinical course of the disease. From Day 0 to Day 5, the ratio of arterial oxygen partial pressure to fractional inspired oxygen (P/F) increased from 222 ± 62 to 274 ± 97 (p < 0.0001) in the remdesivir group and decreased from 223 ± 62 to 183 ± 76 (p < 0.05) in the SoC group. Interleukine-6 levels decreased in the remdesivir (45.9 to 17.5 pg/mL, p < 0.05) but not in the SoC group. Remdesivir reduced the need for ventilatory support and the length of hospitalization. In conclusion, compared to standard care, remdesivir rapidly improves hypoxia and inflammation, causing a better course of the disease in moderate to severe COVID-19.
A Review of Deep Reinforcement Learning Algorithms for Mobile Robot Path Planning
Authors: Singh Ramanjeet , Ren Jing , Lin Xianke
Published: October 2023

Path planning is the most fundamental necessity for autonomous mobile robots. Traditionally, the path planning problem was solved using analytical methods, but these methods need perfect localization in the environment, a fully developed map to plan the path, and cannot deal with complex environments and emergencies. Recently, deep neural networks have been applied to solve this complex problem. This review paper discusses path-planning methods that use neural networks, including deep reinforcement learning, and its different types, such as model-free and model-based, Q-value function-based, policy-based, and actor-critic-based methods. Additionally, a dedicated section delves into the nuances and methods of robot interactions with pedestrians, exploring these dynamics in diverse environments such as sidewalks, road crossings, and indoor spaces, underscoring the importance of social compliance in robot navigation. In the end, the common challenges faced by these methods and applied solutions such as reward shaping, transfer learning, parallel simulations, etc. to optimize the solutions are discussed.
Trace Element Patterns in Shells of Mussels (Bivalvia) Allow to Distinguish between Fresh- and Brackish-Water Coastal Environments of the Subarctic and Boreal Zone
Authors: Lyubas Artem A. , Kuznetsova Irina A. , Bovykina Galina V. , Eliseeva Tatyana A. , Gofarov Mikhail Yu. , Khrebtova Irina S. , Kondakov Alexander V. , Malkov Alexey V. , Mavromatis Vasileios , Shevchenko Alexander R. , Soboleva Alena A. , Pokrovsky Oleg S. , Bolotov Ivan N.
Published: October 2023

The accumulation of trace metals in the shells of bivalves allows quantitative assessments of environmental pollution and helps to reconstruct paleo aquatic environments. However, the understanding on how marine and freshwater mollusks control the level of trace elements in their shells remains very limited. Here, we compared the trace element composition of marine and freshwater bivalves from boreal and subarctic habitats, using examples of widely distributed species of marine (Mytilus edulis, M. trossulus) and freshwater (Anodonta anatina, Unio sp., Beringiana beringiana) mussels. Sizable differences in several trace element concentrations were detected between different species, depending on their environmental niches. A multiparametric statistical treatment of the shell’s elemental composition allowed to distinguish the impact of external factors (water and sediment chemical composition) from active metabolic (biological) control. In particular, the obtained results demonstrated that Ba:Ca and Pb:Ca ratios in mussels’ shells are closely related to the primary productivity of aquatic ecosystems. The Mn:Ca ratio allowed to constrain the environmental conditions of mussels’ species depending on the trophic state of inhabited waterbody. Overall, the marine mussels exhibited stronger biological control of trace element accumulation, whereas trace element pattern in shells of freshwater mussels was chiefly controlled by environmental factors. The obtained results might help to use the trace element composition of bivalves in distinguishing marine and freshwater habitats of mollusks in paleo environments.
A Comprehensive Assessment of the Hydrological Evolution and Habitat Quality of the Xiangjiang River Basin
Authors: Hong Fengtian , Guo Wenxian , Wang Hongxiang
Published: October 2023

Human disturbance and climatic factors alter the hydrological state of rivers in many ways and have a degree of negative impact on the quality of watershed habitats; quantifying the impact of both human disturbance and climatic factors on hydrological change can help improve the quality of watershed habitats. Therefore, in this research, an integrated watershed assessment framework is proposed to analyse the watershed from four perspectives: hydrological situation, environmental flows, drivers, and habitat quality. A meteorological streamflow model based on the Long Short-Term Memory (LSTM) model was employed to analyse the hydrological evolution and quantify the influence of the drivers from the perspective of hydrological and environmental flows. The Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model was then used to evaluate the spatial and temporal evolution of habitat quality in the basin. And, finally, the grey correlation theory was used to reveal the response of habitat quality to hydrological changes. Studies have shown that annual flow and precipitation are increasing in the Xiangjiang River (XJR) basin, while its annual potential evapotranspiration is decreasing significantly. After 1991, the hydrological conditions of the XJR were highly variable, with the combined rate of change of the most Ecologically Relevant Hydrological Indicators, ERHIs-IHA and ERHIs-EFCs, reaching 26.21% and 121.23%, respectively. Climate change and human disturbance are the main drivers of change for both (with contributions of 60% and 71%, respectively). Between 1990 and 2020, the habitat quality in the basin declined over time (from 0.770 to 0.757), with areas of high habitat value located mainly in mountainous areas and habitat degradation being concentrated in urban areas in the middle and lower reaches, gradually evolving towards areas of high habitat value in the periphery. There is a strong correlation between watershed habitat quality and the ERHIs. The results of the study can provide a scientific basis for maintaining regional ecological security and rational allocation of water resources.
Phytoremediation Potential of the Coastal Plain Willow Salix caroliniana for Heavy Metals with Emphasis on Mercury
Authors: Greenplate Ryan , Thomas Serge , Danley-Thomson Ashley , Missimer Thomas M.
Published: October 2023

Remediation of heavy metals is a complex, difficult, and expensive exercise and commonly involves relocation of the problem from one place to another (e.g., a contaminated site to a hazardous waste landfill). Alternatively, bioremediation can be used so that metals can be sequestered into the woody portion of the plant, where they are fixed into the organic matter and remain undisturbed for extended periods (e.g., wetland area soils). A species of willow (Salix caroliniana) was investigated to ascertain its potential for use in the bioremediation of mercury. It was found that the plant did bioaccumulate mercury and did so especially in the wood compared to its leaves (8.8 to 1 ratio in the mercury activity; activity of 12,071 to 1164). While there is moderate potential for use in bioremediation, the measured concentration in the wood was quite low (average of 11.91 ppb). The low concentration was caused by the location of the sampled trees in environments that were either pristine or had low soil concentrations of mercury. Furthermore, 90% of the mercury accumulated in the leaves appeared to be adsorbed via atmospheric deposition in southwest Florida where there are minimal sources of anthropogenic mercury, but the region is impacted by Saharan dust, which does contain mercury.
Assessment and Prediction of the Collaborative Governance of the Water Resources, Water Conservancy Facilities, and Socio-Economic System in the Xiangjiang River Basin, China
Authors: Wen Jie , Li Hongmei , Meseretchanie Abate
Published: October 2023

The collaborative governance of subsystems within a river basin can play a critical role in addressing challenges, such as water scarcity, soil erosion, flooding, sedimentation, and water pollution, to achieve sustainable utilization of water resources. However, the current literature only focuses on isolated observations of these subsystems, leading to uncertainty and water resource destruction. This paper examines the evolution of the collaborative governance of water resources, water conservancy facilities, and socio-economic systems through self-organization theory in the Xiangjiang River Basin, China. The coupling theory and gray Grey Model (1,1) model were utilized with panel data from 2000 to 2019 to assess and predict the governance synergies of five subsystems: natural water, water conservancy facilities, water resource development and utilization, ecological environment, and socio-economic systems. There are 22 indicators contributing to these subsystems that were selected. The results indicate an S-shaped trend in collaborative governance for water resources, water conservancy facilities, and socio-economic systems. The elements of each subsystem exhibit both synergistic and competitive relationships. The unpredictable precipitation triggers a butterfly effect, changing systemic governance coordination, which closely relates to developing the natural water subsystem. Effective water conservation and regulation of water conservancy facilities are the keys to improving water-use efficiency and safeguarding water ecology. This study provides insights into the collaborative governance among subsystems and the evolution of the water resources, water conservancy facilities, and socio-economic systems in the Xiangjiang River Basin to promote sustainable water resource utilization.
Efficient Inactivation and Removal of a Harmful Marine Algae—Heterosigma akashiwo—By UV-Assisted Permanganate Oxidation
Authors: Zeng Jianwei , Chen Xuegang , Jin Shidi , Fan Jiajia
Published: October 2023

Harmful algal blooms (HABs) caused by Heterosigma akashiwo are occurring in coastal waters frequently, posing a great risk to marine environments and subsequent treatment processes like desalination. UV-assisted permanganate oxidation (UV/KMnO4) is recognized as an innovative advanced oxidation process. This study investigated the inactivation and removal efficiencies of H. akashiwo cells by UV/KMnO4. Algal cells were effectively disintegrated into fragments by UV/KMnO4. Also, the degradation of photosynthetic pigments, membrane lipid peroxidation, and severe oxidative stress in algal cells was observed. The removal efficiency of algal cells reached 80.2% by 20 min of UV/KMnO4 oxidation, with a KMnO4 dosage of 5 mg L−1. In addition, the residual algal cells could be completely removed by a subsequent self-settling process, without an additional coagulation procedure. The fragmentation of algal cells caused by UV/KMnO4 may facilitate the formation of algal flocs, thereby improving the cell settleability. Furthermore, UV254 was significantly reduced by UV/KMnO4, which is expected to reduce the formation of disinfection byproducts and membrane fouling. This study elucidates that UV/KMnO4 can be a promising technique for the efficient treatment of harmful marine algae.
Infiltration Measurements during Dry Conditions in an Urban Park in Ljubljana, Slovenia
Authors: Svetina Janja , Prestor Joerg , Šraj Mojca
Published: October 2023

A thorough understanding of the hydrologic mechanisms that control the movement of water through the soil is essential for developing effective stormwater management strategies. Infiltration is critical for determining the amount of water entering the soil and controlling surface runoff. Spatial and temporal variations in soil properties strongly affect infiltration rates, which underscores the importance of evaluating field-specific values for hydraulic conductivity, which are also highly dependent on the chosen measurement and evaluation methods. The objective of this study is to determine and compare soil hydraulic conductivity under dry conditions using two field measurement techniques, namely the double-ring infiltrometer (DRI) and the mini-disk infiltrometer (MDI). The results demonstrate the importance of performing multiple replicates of infiltration tests, especially during the dry season, as the initial dry surface caused deviations in hydraulic conductivity estimates for both methods used (DRI and MDI). Significant spatial variability was observed within the radius of the test replicates over short distances (<1 m). In addition, experimental infiltration curves for a selected site were used to evaluate and compare soil hydraulic parameters through infiltration modeling. In general, the Philip, Green-Ampt, and Smith-Parlange theoretical models showed a better fit to the experimental DRI data than the semi-empirical Horton model.
Survey on Lombardy Region Wastewater Effluents and Application of Biochar from Biological Sewage Sludge for Wastewater Treatment
Authors: Collivignarelli Maria Cristina , Caccamo Francesca Maria , Bellazzi Stefano , Llamas Maria Medina , Sorlini Sabrina , Milanese Chiara
Published: October 2023

Due to decreasing rainfall, drought is an environmental problem becoming even more alarming every year. The direct reuse of treated wastewater (WW), in compliance with current legislation, can be one of the applicable solutions to deal with water scarcity. In this study, an analysis of wastewater treatment plants (WWTPs) (>400 population equivalent) in the Lombardy region (Northern Italy) was performed to identify the most critical parameters in their effluents (total and ammonia nitrogen, and phosphorous). Biochar filters, as final adsorption means for WWTP effluents, could improve water quality for direct reuse. Biochar from biological sewage sludge produced by an urban WWTP (130,000 population equivalent) was prepared via pyrolysis (350–650–950 °C) and chemical activation with KOH. In each preparation step, the material was analyzed to follow the physicochemical transformations. The removal efficiency of COD, N-NH4+, N-NO3-, and P from real WW was studied using batch adsorption tests. Pyrolysis at 650 °C + KOH activation guaranteed higher yields for N-NH4+ (32%), P (44%), and N-NO3− (66%) with a contact time in the batch test of 6 h for N-NH4+ and P, and 3 h for N-NO3−. Up to 50% COD removal was achieved in 6 h with 950 °C pyrolyzed + KOH-activated biochar.
Visible-Light-Driven Photocatalytic Degradation of High-Concentration Ammonia Nitrogen Wastewater by Magnetic Ferrite Nanosphere Photocatalysts
Authors: Guo Xianyong , Gao Fan , Cui Haoxuan , Liu Jiaxuan , Wang Hairong , Liang Lixin , Wu Yinghai , Wan Li , Wang Jing , Zhang Cuiya , Xu Guangjing
Published: October 2023

In this study, magnetic CuFe2O4, MgFe2O4, and ZnFe2O4 nanosphere photocatalysts were prepared by the sol–gel method at 300 °C, 400 °C, and 500 °C, respectively (named as CF300, CF400, CF500, MF300, MF400, MF500, ZF300, ZF400, and ZF500). The characterization by X-ray diffraction (XRD) revealed that the optimal calcination temperature was 400 °C. Then, CF400, MF400, and ZF400 were used to treat high-concentration ammonia nitrogen wastewater (HCAW, 1000 mg/L) at different pH levels. The result showed that the optimal pH for CF400, MF400 and ZF400 to degrade HCAW was 9.0, and CF400 required a shorter illumination time (80 min) than MF400 and ZF400 (120 min) to completely remove ammonia nitrogen from HCAW. However, CF400 was unstable and decomposed, and a blue substance was observed during the magnetic recovery experiment. The recovery rate of ZF400 (66.7%) was higher than MF400 (53.2%) with no decomposition phenomenon, and the ammonia nitrogen removal rate of ZF400 remained above 90% after five cycles. Additionally, the ammonia nitrogen removal rate of ZF400 could reach 80.2% when the ammonia nitrogen concentration was as high as 5000 mg/L. Therefore, compared with CF400 and MF400, ZF400 was more suitable for treating HCAW.
Flood Risk and Vulnerability from a Changing Climate Perspective: An Overview Focusing on Flash Floods and Associated Hazards in Jeddah
Authors: Hussain Shah Syed Muzzamil , Yassin Mohamed A. , Abba Sani I. , Lawal Dahiru U. , Hussein Al-Qadami Ebrahim Hamid , Teo Fang Yenn , Mustaffa Zahiraniza , Aljundi Isam H.
Published: October 2023

Natural hazard threats have grown as a result of climate change, fast demographic development, and major urbanization. Devastating floods have occurred in several areas of the world recently, including the Kingdom of Saudi Arabia, which is located in a region with a dry environment. In arid or semi-arid regions, rapidly forming flash floods associated with debris flowing down over dry water courses leading to a potential threat to both lives and property. Being located at the coastal plain of western Saudi Arabia, Jeddah City has witnessed an unexpected amount of rainfall events in recent years. Such extreme rainfall events, integrated with other factors, namely topography, land use, surface runoff, etc., have led to flood generation, which is alarming indeed. Herein, this paper addresses the varying climatic classifications of the Kingdom, its risk and vulnerability, followed by reasoning about the impact of flash flood events and the associated casualties and property losses. Further, it reports about the existing strategies of the government and proposes a systematic way forward on how to alleviate such events in future. Thus, risk variables have been discovered and integrated in the context of climate change and rising anthropogenic strain on coastal communities to give planners and decision makers tools to assure effective and appropriate flood risk management.
Modern organizational innovations in the sphere of public administration
Authors: Ganeev A.
Published: October 2023

In this article modern trends of organizational transformations in the sphere of public administration in Russia are considered. The author analyzes the goals, objectives and approaches to reforming the system of public administration in the context of the regime of unprecedented sanctions, emerging new economic reality.
Univariate Shepard-Birkhoff Interpolation
Authors: Coman Gheorghe , Trîmbiţaş Radu T.
Published: October 2023

In this paper we study the univariate Shepard-Birkho operators.

We give an error estimation for the aproximation with these operators and some examples and graphs.
Extensions of semi-Lipschitz functions on quasi-metric spaces
Authors: Mustăţa Costică
Published: October 2023

The aim of this note is to prove an extension theorem for semi-Lipschitz real functions dened on quasi-metric spaces, similar to McShane extension theorem for real-valued Lipschitz functions dened on a metric space

([2], [4]).
On a Halley-Steffensen method for approximating the solutions of scalar equations
Authors: Păvăloiu Ion
Published: October 2023

In the present paper we show that the Steffensen method for solving the scalar equation \(f\left( x\right) =0\), applied to equation\[h\left( x\right) =\tfrac{f\left( x\right) }{\sqrt{f^{\prime}\left( x\right) }}=0,\]leads to bilateral approximations for the solution. Moreover, the convergence order is at least 3, i.e. as in the case of the Halley method.
Compatibility of some systems of inequalities
Authors: Balaj Mircea
Published: October 2023

In this paper, necessary and sufficient conditions for the compatibility of some systems of quasi-convex, or convex inequalities are established. Finally a new proof for a theorem of Shioji and Takahashi (1988) [10] is given.
The approximation of the solutions of equations using approximant sequences
Authors: Diaconu Adrian
Published: October 2023

We intend to characterize the convergence of a certain sequence

that belongs to a subset of a Banach space towards the solution of

an equation obtained by the annulment of a nonlinear mapping that

is defined on this subset and that takes values in another linear

normed space. This mapping has a Fréchet derivative of a

certain order which verifies the Lipschitz condition. We can

establish some conditions that are enough both for the existence

of the equation's solution and for a speed of convergence of a

certain order for the approximant sequence.
The Second Ditzian-Totik modulus revisited: refined estimates for positive linear operators
Authors: Gonska Heinz H. , Tachev Gancho T.
Published: October 2023

Direct theorems for approximation by positive linear operators in terms of the second order Ditzian-Totik modulus of smoothness are proved. Special emphasis is on the magnitude of the absolute constants. New results are obtained for Bernstein operators, for piecewise linear interpolation, for general Bernstein-Stancu operators and for those of Gavrea.
Supplementary directional relaxations for the acceleration of Kaczmarz's projection method
Authors: Popa Constantin
Published: October 2023

Starting from an extension of Kaczmarz's method, obtained by us in a previous paper, we introduce new directions for projections. We prove that by this, we don't modify the set of limit points of the original extended Kaczmarz algorithm. For the class of boundary value problems or integral equations of the first kind, we describe a method for constructing these new directions. It is based on considering coarser level of discretization for the initial problem. Some numerical experiments are also presented.
Some sufficient conditions for the convergence of the cascade algorithm and for the continuity of the scaling function
Authors: Roşca Daniela
Published: October 2023

We define a class of matrices which includes, under some natural assumptions, the matrices \(\mathbf{m}\left( 0\right)\), \(\mathbf{m}\left( 1\right)\) and \(T_{2N-1}\), which are the key matrices of the wavelets theory. The matrices of this class have the property that the eigenvalues of a product matrix are products of their eigenvalues. This property is used in establishing some sufficient conditions for the convergence of the cascade algorithm and some sufficient conditions for the continuity of the scaling function. We generalize here the particular results obtained by us in a previous paper.
Self-similar sets in convex metric spaces
Authors: Moţ Ghiocel
Published: October 2023

The purpose of this paper is to present some existence and uniqueness results for self-similar sets in convex complete metric spaces.
Bounds for the remainder in the bivariate Shepard interpolation of Lidstone type
Authors: Cătinaş Teodora
Published: October 2023

We study the bivariate Shepard-Lidstone interpolation operator and obtain new estimates for the remainder. Some numerical examples are provided.
Double inequalities of Newton's quadrature rule
Authors: Heljiu Marius
Published: October 2023

In this paper double inequalities of Newton's quadrature rule are given.
Convergence of Szász-Mirakyan type operators
Authors: Walczak Zbigniew
Published: October 2023

We introduce certain modifications of Szász-Mirakyan operators and we study approximation properties of these operators. The result is in a form convenient for applications.
Double inequalities for quadrature formula of Gauss type with two nodes
Authors: Heljiu Marius
Published: October 2023

In this paper upper and lower error bounds for Gauss's quadrature rule with two nodes are given.
Newton's method in Riemannian manifolds
Authors: Argyros Ioannis K.
Published: October 2023

Using more precise majorizing sequences than before [1], [8], and under the same computational cost, we provide a finer semilocal convergence analysis of Newton's method in Riemannian manifolds with the following advantages: larger convergence domain, finer error bounds on the distances involved, and a more precise information on the location of the singularity of the vector field.
Bernstein-type operators on triangles
Authors: Blaga Petru , Coman Gheorghe
Published: October 2023

The aim of the paper is to construct some univariate Bernstein-type operators on triangle, their product and Boolean sum, which interpolate a given function on the edges respectively at the vertices of triangle. Using the modulus of continuity and the Peano's theorem the remainders of corresponding approximation formulas are studied.
Extending the collage theorem to contractive like operators
Authors: Şoltuz Ştefan M.
Published: October 2023

We generalize the classical "collage'' theorem, due to Barnsley, to contractive like operators.
On the composite Bernstein type quadrature formula
Authors: Bărbosu Dan , Miclăuş Dan
Published: October 2023

Considering a given function \(f\in C[0,1]\), the interval \([0,1]\) is divided in \(m\) equally spaced subintervals \(\left[\tfrac{k-1}{m},\tfrac{k}{m}\right]\), \(k=\overline{1,m}\). On each of such type of interval the Bernstein approximation formula is applied and a corresponding Bernstein type quadrature formula is obtained. Making the sum of mentioned quadrature formulas, the composite Bernstein type quadrature formula is obtained.
Vector optimization problems and approximated vector optimization problems
Authors: Duca Eugenia , Duca Dorel I.
Published: October 2023

In this paper, a so-called approximated vector optimization problem associated to a vector optimization problem is considered. The equivalence between the efficient solutions of the approximated vector optimization problem and efficient solutions of the original optimization problem is established.
A Hadoop Based Approach for Community Detection on Social Networks Using Leader Nodes
Authors: Iqbal Mohamed , Latha Kesavarao
Published: October 2023

Community detection is the most common and growing area of interest in social and real-time network applications. In recent years, several community detection methods have been developed. Particularly, community detection in Local expansion methods have been proved as effective and efficiently. However, there are some fundamental issues to uncover the overlapping communities. The maximum methods are sensitive to enable the seeds initialization and construct the parameters, while others are insufficient to establish the pervasive overlaps. In this paper, we proposed the new unsupervised Map Reduce based local expansion method for uncovering overlapping communities depends seed nodes. The goal of the proposed method is to locate the leader nodes (seed nodes) of communities with the basic graph measures such as degree, betweenness and closeness centralities and then derive the communities based on the leader nodes. We proposed Map-Reduce based Fuzzy C- Means Clustering Algorithm to derive the overlapping communities based on leader nodes. We tested our proposed method Leader based Community Detection (LBCD) on the real-world data sets of totals of 11 and the experimental results shows the more effective and optimistic in terms of network graph enabled overlapping community structures evaluation.
Un manifeste des débuts de l’architecture flamboyante signé J. Lebas : la grande baie orientale de l’église des Jacobins de Saintes
Authors: Schlicht Markus
Published: October 2023

The Jacobin church at Saintes has a vast east window which is remarkable in many ways. It is one of the very rare gothic bays bearing a large inscription giving its precise date (1446) and naming the architect, J. Lebas. A detailed morphological analysis of the tracery attests the unusual quality of its architectural forms. The tracery of the tympanum, which is among the earliest flamboyant compositions, stands out for its sophistication and the studied reflection by the master of the works concerning the artistic means at his disposal. The sources of inspiration of the tracery design, coming from both the South-West and northern France, illustrate his extensive knowledge of late medieval work-sites. A critical re-examination of the inscription in the bay aims to determine the degree of initiative on the part of the presumed master of the works, Jean Lebas. Globally, the study intends to illustrate how a close formal analysis
Le château de Verrès en 1390 et l’architecture seigneuriale en Val d’Aoste du XIe siècle au XVe siècle
Authors: Mesqui Jean
Published: October 2023

Le Val d’Aoste compte parmi les plus belles et intéressantes fortifications d’Europe ; durant les deux dernières décennies, de nombreuses recherches historiques et archéologiques ont permis de renouveler totalement la connaissance de cette architecture. Après une brève rétrospective des résultats les plus récents de cette recherche, on se focalisera dans cet article sur le château de Verrès, bâti autour de 1390, qui est l’un des sites les plus marquants de l’architecture seigneuriale du Moyen Âge en Europe. Un développement particulier est consacré à l’apparition et l’évolution de l’arc en accolade au XIVe siècle.
Données numismatiques pour l’histoire politique de la Sogdiane (IVe-IIe siècles av. n. è.)
Authors: Atakhodjaev Anvar Kh. , Grenet Frantz , Rapin Claude
Published: October 2023

Cet article présente un nouveau catalogue de 34 monnaies datant de l’époque hellénistique (du règne d’Alexandre III à celui d’Eucratide Ier) découvertes récemment à Samarcande et dans les régions et oasis adjacentes (ouest de la ville, Bukhara, Kashka-darya et Ustrushana). L’auteur revient sur la localisation d’un atelier monétaire local et propose d’attribuer au règne d’Antiochos III l’apposition d’une contremarque représentant une ancre sur un bronze d’Antiochos Ier. Il propose également que les monnaies aux types du crabe et de l’abeille, qu’il identifie comme une tarentule et une guêpe, datent de la même époque.
The Alexanders of Assos and Phokaia
Authors: Ellis-evans Aneurin
Published: October 2023

There has been considerable uncertainty in the attribution of Alexanders to Assos and Phokaia because both cities used a griffin as their civic badge. This article attempts to resolve these uncertainties by providing a die study of the Alexanders attributed to Assos and Phokaia and combining the results of this study with the available hoard evidence. This produces a new picture of the minting activity of Assos and Phokaia in the late 3rd and early 2nd century which raises questions about how the production of these high-value series fits into the broader context of the Attalid kingdom.
Les dernières monnaies d’argent du Péloponnèse (3)
Authors: Grandjean Catherine , Blet-Lemarquand Maryse
Published: October 2023

The metrological study and elemental analyses by LA-ICP-MS presented here suggest that the third and final group of Achaian silver coinage of the Hellenistic period did not experience the weight collapse and fall in the alloy’s fineness that could have been feared in view of the poor aesthetic quality (engraving, striking) of many coins. They also confirm the existence of two production phases for this third group, with the use of silver and copper of distinct chemical signatures and the increased addition of copper in the second phase. The latter would include the Achaian series with the money names of Aigion and Elis and the civic coins of Patras. Confrontation with the legionary denarii of Mark Antony validates the low chronology of the third group’s issues.
Une émission monétaire inédite d’Amisos, ciuitas libera et foederata sous le Principat
Authors: Sánchez Pierre
Published: October 2023

Une émission inédite d’Amisos (RPC I 2156A) permet d’attribuer le monnayage aux fétiaux (RPC I 2156) à l’atelier de cette cité du Pont. À l’avers des deux émissions figure un portrait de César Octavien. Au revers des monnaies inédites apparaît un portrait de César divinisé : elles commémorent la double libération de la cité par César en 47, puis par César Octavien en 31-30. Les monnaies aux fétiaux illustrent le rite du traité conclu entre Rome et Amisos, probablement entre 27 et 23. Deux autres émissions contemporaines d’Amisos évoquent les mêmes événements.
¿Téseras mineras del sureste hispano o nuevos cuadrantes de Carthago Nova?
Authors: Martínez Chico David
Published: October 2023

The aim of this paper is to organize for the first time an uncertain issue, which we definitely assign to the territory of Carthago Nova. The obverse depicts an

aspergillum and the reverse a securis. The issue can be dated between the end of the 1st century BC and the beginning of the 1st century AD. In addition, unpublished coin finds confirm the suggested location. On the other hand, the nature of these bronze pieces is discussed. It seems more correct to interpret them as tesserae rather than as Carthago Nova’s quadrantes. The most convincing fact, although not definitive, is the absence of a magistrate in charge of the issue or even of the name of the colony itself, as in the form of an abbreviation – C(olonia) V(rbs) I(ulia) N(ova Carthago)– in the anonymous issue with Minerva and statue on a pedestal (RPC I 151).
A Group of Late Antique Bronze Coins Found at Carthage (Sidi Daoud) in the Early 1800s
Authors: Visonà Paolo
Published: October 2023

An ensemble of 29 Roman, Vandalic, and Byzantine coins described by J. E. Humbert in a manuscript written between 1815 and 1819 and preserved in C. J. C. Reuvens’ Archives in Leiden’s Rijksmuseum van Oudheden is discussed. According to Humbert, the coins were contained in a fragmented Hellenistic unguentarium that was said to have been found beneath an inscribed Christian tombstone at Sidi Daoud, in the environs of ancient Carthage. The most recent coin is a rare nummus of Maurice Tiberius that probably was minted at Carthage. It is unlikely that this group of coins is a funerary deposit, because the tombstone is at least a century earlier than the coins ; it is also uncertain whether they represent a hoard, although similar assemblages of coins have been found in controlled excavations.
The Transitional Visigothic Coinage of Leovigild: A Die Study and Metrological Comparison of Tomasini’s JII 5 Category
Authors: Yoon David , Bartlett Peter
Published: October 2023

Le monnayage pseudo-impérial wisigothique avec un revers représentant la Victoire tenant une palme et une couronne est complexe. L’étude stylistique de Wallace Tomasini fournit un cadre utile, mais il existe peu d’études numismatiques détaillées. Dans cet article, nous examinons l’une des catégories stylistiques de Tomasini, la catégorie JII 5, en proposant une étude de coins, une division typologique et stylistique plus détaillée, une comparaison métrologique et une discussion concernant les indications relatives aux lieux de production. Les résultats de cet examen montrent que la production de monnaies au cours de la première décennie du règne de Leovigild est plus complexe qu’on le croit généralement, avec plusieurs ateliers qui avaient différents niveaux de compétence et de contrôle sur la valeur intrinsèque de leurs monnaies.
Two New Umayyad Fals with Fish Iconography
Authors: Ibrahim Tawfiq
Published: October 2023

Cet article présente deux nouveaux types de fals des Omayyades figurant un poisson. L’atelier de Tanger est mentionné sur les deux monnaies et, dans le second cas, en association avec le nom d’Al-Andalus.
À propos des monnaies des Ma.c de Hà Tiên (1736-1781)
Authors: Thierry François
Published: October 2023

En 1736, Mạc Thiên Tứ, gouverneur de Hà Tiên, reçut du seigneur Ninh Vương, souverain de la principauté des Nguyễn, le droit de fondre de la monnaie. La question de savoir quel type de monnaies il a fondu s’est posée dès la fin du xixe siècle et, en l’absence d’éléments fiables, sources écrites ou données archéologiques, numismates et historiens ont élaboré des hypothèses qui font que pour les uns, Mạc Thiên Tứ a seulement émis de petites monnaies Thái Bình thông bảo en bronze et, pour d’autres, il fut le plus prolifique émetteur de la seconde moitié du xviiie siècle dans le sud de l’Indochine, utilisant aussi bien le bronze que le zinc. À partir d’une étude précise des maigres données dont on dispose, on peut et on doit écarter la plupart de ces hypothèses et admettre qu’à ce jour on ne sait pas vraiment à quoi ressemblaient les monnaies de Mạc Thiên Tứ.