bluuebunny/crossref_metadata_2025 huggingface dataset:
The Role of Superabsorbent Polymers and Polymer Composites in Water Resource Treatment and Management
Authors: Campanile Assunta , Liguori Barbara , Lama Giuseppe Cesare , Recupido Federica , Donatiello Silvana , Gagliardi Mariarita , Morone Alfonso , Verdolotti Letizia
Published: August 2024

In the last century, the issue of “water reserves” has become a remarkably strategic topic in modern science and technology. In this context, water resource treatment and management systems are being developed in both agricultural and urban area scenarios. This can be achieved using superabsorbent polymers (SAPs), highly cross-linked hydrogels with three-dimensional, hydrophilic polymer structures capable of absorbing, swelling and retaining huge amounts of aqueous solutions. SAPs are able to respond to several external stimuli, such as temperature, pH, electric field, and solution composition and concentration. They can be used in many areas, from sensor technology to drug delivery, agriculture, firefighting applications, food, and the biomedical industry. In addition, new categories of functional SAP-based materials, mainly superabsorbent polymer composites, can also encapsulate fertilizers to efficiently provide the controlled release of both water and active compounds. Moreover, SAPs have great potential in wastewater treatment for the removal of harmful elements. In this respect, in the following review, the most promising and recent advances in the use of SAPs and composite SAPs as tools for the sustainable management and remediation of water resource are reviewed and discussed by identifying opportunities and drawbacks and highlighting new challenges and aims to inspire the research community.
Response Surface Modelling Nafion-117 Sorption of Tetraammineplatinum(II) Chloride in the Electroless Plating of IPMCs
Authors: Manaf Eyman , Abdeali Golnoosh , Reidy Sean , Higginbotham Clement L. , Lyons John G.
Published: August 2024

This work looks at the effects of a varying concentration, soak time, pH and temperature on the sorption of tetraammineplatinum(II) chloride (Pt-Ammine) in Nafion-117 films in the context of the electroless plating of ionic polymer–metal composites (IPMCs). Sorption is characterised by atomic absorption spectroscopy. A definitive screening design carried out determined all four factors to be significant for further analysis using response surface modelling. A duplicated central composite design (CCD) was utilised to characterise how the four factors affect the sorption amount and efficiency. Regression models for both responses were of poor fit. Nevertheless, key insights were obtained on the effects of the process parameters on sorption behaviour. The results indicate that above 0.5 g/L Pt-Ammine sorption, the platinisation of 10 × 50 mm IPMC samples through sodium borohydride reduction becomes redundant by the surface resistance metric. IPMCs with surface resistance values of approximately 2.5 Ω/square were obtained through only one round of chemical reduction. Varying surface morphologies and electrode thicknesses were analysed under a scanning electron microscope. The CCD parameter settings were validated. Recommended settings for optimised Pt-Ammine sorption in 10 × 50 mm Nafion-117 films were identified as follows: 1.0 g/L Pt-Ammine concentration, 24 h soak time, pH of 3 and temperature of 20 °C.
Effect of Surface Contamination on Near-Infrared Spectra of Biodegradable Plastics
Authors: Mhaddolkar Namrata , Koinig Gerald , Vollprecht Daniel , Astrup Thomas Fruergaard , Tischberger-Aldrian Alexia
Published: August 2024

Proper waste sorting is crucial for biodegradable plastics (BDPs) recycling, whose global production is increasing dynamically. BDPs can be sorted using near-infrared (NIR) sorting, but little research is available about the effect of surface contamination on their NIR spectrum, which affects their sortability. As BDPs are often heavily contaminated with food waste, understanding the effect of surface contamination is necessary. This paper reports on a study on the influence of artificially induced surface contamination using food waste and contamination from packaging waste, biowaste, and residual waste on the BDP spectra. In artificially contaminated samples, the absorption bands (ADs) changed due to the presence of moisture (1352–1424 nm) and fatty acids (1223 nm). In real-world contaminated samples, biowaste samples were most affected by contamination followed by residual waste, both having altered ADs at 1352–1424 nm (moisture). The packaging waste-contaminated sample spectra closely followed those of clean and washed samples, with a change in the intensity of ADs. Accordingly, two approaches could be followed in sorting: (i) affected wavelength ranges could be omitted, or (ii) contaminated samples could be used for optimizing the NIR database. Thus, surface contamination affected the spectra, and knowing the wavelength ranges containing this effect could be used to optimize the NIR database and improve BDP sorting.
Injectable Carrageenan/Green Graphene Oxide Hydrogel: A Comprehensive Analysis of Mechanical, Rheological, and Biocompatibility Properties
Authors: Moncada Danny , Bouza Rebeca , Rico Maite , Rodríguez-Llamazares Saddys , Pettinelli Natalia , Aragón-Herrera Alana , Feijóo-Bandín Sandra , Gualillo Oreste , Lago Francisca , Farrag Yousof , Salavagione Horacio
Published: August 2024

In this work, physically crosslinked injectable hydrogels based on carrageenan, locust bean gum, and gelatin, and mechanically nano-reinforced with green graphene oxide (GO), were developed to address the challenge of finding materials with a good balance between injectability and mechanical properties. The effect of GO content on the rheological and mechanical properties, injectability, swelling behavior, and biocompatibility of the nanocomposite hydrogels was studied. The hydrogels’ morphology, assessed by FE-SEM, showed a homogeneous porous architecture separated by thin walls for all the GO loadings investigated. The rheology measurements evidence that G′ > G″ over the whole frequency range, indicating the dominant elastic nature of the hydrogels and the difference between G′ over G″ depends on the GO content. The GO incorporation into the biopolymer network enhanced the mechanical properties (ca. 20%) without appreciable change in the injectability of the nanocomposite hydrogels, demonstrating the success of the approach described in this work. In addition, the injectable hydrogels with GO loadings ≤0.05% w/v exhibit negligible toxicity for 3T3-L1 fibroblasts. However, it is noted that loadings over 0.25% w/v may affect the cell proliferation rate. Therefore, the nano-reinforced injectable hybrid hydrogels reported here, developed with a fully sustainable approach, have a promising future as potential materials for use in tissue repair.
Evaluation of Key Development Factors of a Buried Hill Reservoir in the Eastern South China Sea: Nonlinear Component Seepage Model Coupled with EDFM
Authors: Dai Jianwen , Xiang Yangyue , Zhu Yanjie , Wang Lei , Chen Siyu , Qin Feng , Sun Bowen , Deng Yonghui
Published: August 2024

The HZ 26-B buried hill reservoir is located in the eastern part of the South China Sea. This reservoir is characterized by the development of natural fractures, a high density, and a complex geological structure, featuring an upper condensate gas layer and a lower volatile oil layer. These characteristics present significant challenges for oilfield exploration. To address these challenges, this study employed advanced embedded discrete fracture methods to conduct comprehensive numerical simulations of the fractured buried hill reservoirs. By meticulously characterizing the flow mechanisms within these reservoirs, the study not only reveals their unique characteristics but also establishes an embedded discrete fracture numerical model at the oilfield scale. Furthermore, a combination of single-factor sensitivity analysis and the Pearson correlation coefficient method was used to identify the primary controlling factors affecting the development of complex condensate reservoirs in ancient buried hills. The results indicate that the main factors influencing the production capacity are the matrix permeability, geomechanical effects, and natural fracture length. In contrast, the impact of the threshold pressure gradient and bottomhole flow pressure is relatively weak. This study’s findings provide a scientific basis for the efficient development of the HZ 26-B oilfield and offer valuable references and insights for the exploration and development of similar fractured buried hill reservoirs.
Development of a Monk-Led Elderly Mental Health Counseling Program in Thai Buddhist Communities
Authors: Langgapin Saowalak , Boonchieng Waraporn , Chautrakarn Sineenart , Maneeton Narong , Senawan Sunisa
Published: August 2024

The increasing mental health challenges among elders demand specialized interventions, especially within Thai communities where resources are limited and stigma persists. While monks offer spiritual support, there is a gap in addressing complex mental health needs. This research aims to develop a monk-led elderly mental health counseling program in Thai Buddhist communities. From January 2023 to March 2024, this study underwent four phases. Initially, qualitative interviews with thirty-six monk and elder participants elucidated requirements. The program development integrated findings from the requirement study, the Solution-Focused Brief Therapy process, and Buddhist mindfulness principles to create a prototype. The quality assessment involved expert content validation, feasibility examination by stakeholders, and a small-scale pilot testing with five monks. Finally, the feasibility of the program was assessed with thirty-two monks. The study reveals three key components of the monk-led elderly counseling program focused on mental health: the counseling process known as MPS-MAV-PI (an Introduction to Mindfulness, Identifying Problems, Assessing the Severity, Mindfully Observing Thoughts and Emotions, Acceptance, Visualizing Success, Planning Strategies for Problem-solving, and Implementation and Subsequent Monitoring), the C-TIME strategy (Collaboration, Training Manual, Implementation, the Monitoring, and Evaluation), and the program manual. Moreover, feasibility assessments among monks show the high feasibility of the program for implementation. The monk-led counseling program holds promise in addressing these challenges, with high feasibility indicating potential effectiveness and scalability. Future research will prioritize evaluating its cost-effectiveness and overall effectiveness.
From Shared RE to a Shared Digital RE Strategy: Navigating the Post-Digital Transformation of RE Organizations—Results of a Swiss Participatory Research Project
Authors: Suhner Jasmine
Published: August 2024

Religious adult education, characterized as non-formal religious education (RE) that has often been established over many decades, is frequently marked by patterns of institutional separation, local conditions and denominational divisions. This is also the case in Switzerland, where in each canton various church academies and RE organizations generally offer their respective programs along both denominational and cantonal lines. The increasing digitalization of society, and consequently of education, alters the original situation for these actors, both on an individual and organizational level. This article discusses the challenges of religious adult education in navigating the post-digital pivot. It addresses the issues of changing forms of teaching and learning, dealing with shifts in authority, and the growing need for collaboration and shared strategies among RE organizations in post-digital society. A participatory research project involving nearly 60 Swiss RE organizations investigated how these organizations are dealing with digitalization, analyzing the perspectives of the organizational leaders, the teachers, and learners through mixed methods. The findings provide insights into factors influencing the intent to offer or use digital RE courses, as well as factors contributing to the readiness to cooperate in the digital educational field.
Epistemic Goods, Epistemic Norms, and Evangelization
Authors: Stepanenko Walter Scott
Published: August 2024

A missionary religious tradition such as Christianity is distinguished from some other traditions by a commitment to the goal of converting others. However, the very nature of this goal and the norms that govern the successful realization of this goal are not often explored. In this article, I argue that evangelization can be undertaken for several distinct reasons, including epistemic reasons, particularly in cases in which evangelizers are aiming at the multivalent goal of fellowship. I argue that this account illuminates several possible models of mission, that it can provide resources for further evaluation and modeling of evangelical efforts, and that it might signify the need for theologically informed positions in the contemporary meta-epistemological debate about epistemic reasons.
Kucha and Termez—Caves for Mindful Pacing and Seated Meditation
Authors: Vignato Giuseppe , Li Xiaonan
Published: August 2024

In this paper, by comparing the archaeological remains of meditation caves in Kucha and Termez and by referring to Buddhist literature, we aim at gaining a better understanding of how meditation was practiced in both regions. In Kucha and Termez the arid climate shifted between extreme summer heat and extreme winter cold, making the caves ideal choices for meditation. In Kucha, various types of meditation caves have been recorded. These include small cells for seated meditation, single corridors, and corridors that intersect to form a cross or an inverted U plan. The latter type is associated with a residence and a courtyard, which show many similarities with the complexes located in the mounds south and west of the monastery of Kara Tepe. Two possible uses of the corridor-shaped caves have been proposed based on various factors, such as the distance of the caves from the surface monastery, the similarity of the type, the presence of a courtyard in front of the caves, and the existence of a cell where a person could repose. Buddhist accounts remark on the importance of mindful pacing (Skt. caṅkrama; Chi. jingxing 經行) along with sitting meditation in the daily practice of bhikṣus. According to descriptions in the vinaya, we can infer the possibility of having several types of pathways for mindful pacing, besides the most common straight path. Note also that various ancient records of Buddhist monks mention monuments associated with mindful pacing. Drawing on both architectural remains of the investigated areas and textual evidence, we suggest that the carved corridors, both single and intersecting, might have been specifically designed for mindful pacing. In the better-preserved complexes, the length of the courtyard’s sides corresponds with that of the corridors. While the courtyard could have been utilized for various activities, the similarity in size between corridors and the courtyard hints at its potential use for mindful pacing in mild weather. Furthermore, because the Kara Tepe monastery could accommodate less than fifteen monks, the presence of several meditation complexes, each consisting of four intersecting corridors and a small cell, implies that these units were intended for a monk to live in seclusion for a period.
Historicizing Secular Subjectivities: Conceptual Erasures and Subjective Multi-Hybridizations
Authors: Zavala-Pelayo Edgar
Published: August 2024

The “multiple secularities” framework may be regarded as a recent ambitious contribution to the comparative analysis of secularisms across Western and non-Western societies. While I argue in this article for the “historicization” of secularities as proposed by the framework, I also point out the latter’s lack of empirical attention to the subjective dimension of historical secularities. More specifically, the article attempts to show the theoretical relevance of analyzing historical secularities in post-colonial societies from the perspective of the subjects and their complex selves. Through a genealogical analysis of the subjectivities of three influential positivist intellectuals in 19th-century Mexico, I argue that the analytical axes of the multiple secularities framework may be refined and broadened. I discuss how the framework’s search for local forms of “conceptual distinctions” should be complemented by the search for conceptual erasures and how the analysis of “semantic hybridity” should be broadened and include the analysis of experiential and emotional forms of hybridizations. I also argue that the analyses of historical secularities should account for “sacred-secular” hybrids, as well as more specific hybridizations, such as ecclesiological–secular and theological–secular transpositions.
An Evaluation of the Land Available for Sustainable Sugarcane Cultivation and Potential for Producing Ethanol and Bioelectricity in Angola
Authors: Matias Adilson João , Nogueira Luiz Augusto Horta , Batlle Eric Alberto Ocampo
Published: August 2024

With a predominantly humid tropical climate and a large area for expanding agricultural activities, Angola has in principle favorable conditions for bioenergy production. The focus of this study was to evaluate the availability of suitable land for producing sugarcane. This crop is highly efficient in converting solar energy into biomass for energy purposes in Angola. To this end, this paper outlines a method for data collection, processing, and analysis divided into three sections. The first section uses the GAEZ (Global Agroecological Zones) database and QGIS (Quantum GIS) software (version 3.22.5) to assess land availability for sugarcane cultivation in Angola, classifying the regions’ suitability into four levels. The second section supplements this with data from the FAOSTAT database, systematically excluding areas with restrictions, such as protected zones, land already used for other crops, and regions unsuitable for sugarcane. Finally, the third section employs an agricultural yield model to estimate the potential yield of sugarcane based on climatic parameters and the amount of bioenergy (ethanol and bioelectricity) able to be produced in the available land. Under these criteria, this study identified the existence of 6.3 Mha in lands of good agricultural suitability, with water resources, corresponding to 5% of the Angolan territory, distributed in seven provinces of the country, especially in the provinces of Cuando Cubango and Cunene, where 85% of the very suitable land under irrigation is located. Adopting a model of agricultural productivity, assuming irrigation and adequate agricultural practices, such area could produce approximately 956 million tons of sugarcane annually, which is significantly higher than the current production in this country. This amount of feedstock processed using current technology could potentially produce 81.3 GL of ethanol and 176.9 TWh of electricity with low GHG emissions per year, which is able to mitigate, as a whole, circa 60.3 MtCO2-eq/year by displacing gasoline in light vehicles and diesel and natural gas consumed in power generation.
Quick Introduction into the General Framework of Portfolio Theory
Authors: Kreins Philipp , Maier-Paape Stanislaus , Zhu Qiji Jim
Published: August 2024

This survey offers a succinct overview of the General Framework of Portfolio Theory (GFPT), consolidating Markowitz portfolio theory, the growth optimal portfolio theory, and the theory of risk measures. Central to this framework is the use of convex analysis and duality, reflecting the concavity of reward functions and the convexity of risk measures due to diversification effects. Furthermore, practical considerations, such as managing multiple risks in bank balance sheets, have expanded the theory to encompass vector risk analysis. The goal of this survey is to provide readers with a concise tour of the GFPT’s key concepts and practical applications without delving into excessive technicalities. Instead, it directs interested readers to the comprehensive monograph of Maier-Paape, Júdice, Platen, and Zhu (2023) for detailed proofs and further exploration.
Algorithm Validation for Quantifying ActiGraph™ Physical Activity Metrics in Individuals with Chronic Low Back Pain and Healthy Controls
Authors: Hoydick Jordan F. , Johnson Marit E. , Cook Harold A. , Alfikri Zakiy F. , Jakicic John M. , Piva Sara R. , Chambers April J. , Bell Kevin M.
Published: August 2024

Assessing physical activity is important in the treatment of chronic conditions, including chronic low back pain (cLBP). ActiGraph™, a widely used physical activity monitor, collects raw acceleration data, and processes these data through proprietary algorithms to produce physical activity measures. The purpose of this study was to replicate ActiGraph™ algorithms in MATLAB and test the validity of this method with both healthy controls and participants with cLBP. MATLAB code was developed to replicate ActiGraph™’s activity counts and step counts algorithms, to sum the activity counts into counts per minute (CPM), and categorize each minute into activity intensity cut points. A free-living validation was performed where 24 individuals, 12 cLBP and 12 healthy, wore an ActiGraph™ GT9X on their non-dominant hip for up to seven days. The raw acceleration data were processed in both ActiLife™ (v6), ActiGraph™’s data analysis software platform, and through MATLAB (2022a). Percent errors between methods for all 24 participants, as well as separated by cLBP and healthy, were all less than 2%. ActiGraph™ algorithms were replicated and validated for both populations, based on minimal error differences between ActiLife™ and MATLAB, allowing researchers to analyze data from any accelerometer in a manner comparable to ActiLife™.
Evaluating UAV-Based Remote Sensing for Hay Yield Estimation
Authors: Lee Kyuho , Sudduth Kenneth A. , Zhou Jianfeng
Published: August 2024

(1) Background: Yield-monitoring systems are widely used in grain crops but are less advanced for hay and forage. Current commercial systems are generally limited to weighing individual bales, limiting the spatial resolution of maps of hay yield. This study evaluated an Uncrewed Aerial Vehicle (UAV)-based imaging system to estimate hay yield. (2) Methods: Data were collected from three 0.4 ha plots and a 35 ha hay field of red clover and timothy grass in September 2020. A multispectral camera on the UAV captured images at 30 m (20 mm pixel−1) and 50 m (35 mm pixel−1) heights. Eleven Vegetation Indices (VIs) and five texture features were calculated from the images to estimate biomass yield. Multivariate regression models (VIs and texture features vs. biomass) were evaluated. (3) Results: Model R2 values ranged from 0.31 to 0.68. (4) Conclusions: Despite strong correlations between standard VIs and biomass, challenges such as variable image resolution and clarity affected accuracy. Further research is needed before UAV-based yield estimation can provide accurate, high-resolution hay yield maps.
An Integrated Data Acquisition Approach for the Structural Health Monitoring and Real-Time Earthquake Response Assessment of a Retrofitted Adobe Church in Peru
Authors: Karanikoloudis Georgios , Barontini Alberto , Mendes Nuno , Lourenço Paulo B.
Published: August 2024

The structural health monitoring (SHM) of buildings provides relevant data for the evaluation of the structural behavior over time, the efficiency of maintenance, strengthening, and post-earthquake conditions. This paper presents the design and implementation of a continuous SHM system based on dynamic properties, base accelerations, crack widths, out-of-plane rotations, and environmental data for the retrofitted church of Kuñotambo, a 17th century adobe structure, located in the Peruvian Andes. The system produces continuous hourly records. The organization, data collection, and processing of the SHM system follows different approaches and stages, concluding with the assessment of the structural and environmental conditions over time compared to predefined thresholds. The SHM system was implemented in May 2022 and is part of the Seismic Retrofitting Project of the Getty Conservation Institute. The initial results from the first twelve months of monitoring revealed seasonal fluctuations in crack widths, out-of-plane rotations, and natural frequencies, influenced by hygrothermal cycles, and an apparent positive trend, but more data are needed to justify the nature of these actions. This study emphasizes the necessity for extended data collection to establish robust correlations and refine monitoring strategies, aiming to enhance the longevity and safety of historic adobe structures under seismic risk.
High-Precision Positioning and Rotation Angle Estimation for a Target Pallet Based on BeiDou Navigation Satellite System and Vision
Authors: Meng Deqiang , Ren Yufei , Yu Xinli , Yin Xiaoxv , Wang Wenming , Men Junhui
Published: August 2024

In outdoor unmanned forklift unloading scenarios, pallet detection and localization face challenges posed by uncontrollable lighting conditions. Furthermore, the stacking and close arrangement of pallets also increase the difficulty of positioning a target pallet. To solve these problems, a method for high-precision positioning and rotation angle estimation for a target pallet using the BeiDou Navigation Satellite System (BDS) and vision is proposed. Deep dual-resolution networks (DDRNets) are used to segment the pallet from depth images and RGB images. Then, keypoints for calculating the position and rotation angle are extracted and further combined with the 3D point cloud data to achieve accurate pallet positioning. Constraining the pixel coordinates and depth coordinates of the center point of the pallet and setting the priority of the pallet according to the unloading direction allow the target pallet to be identified from multiple pallets. The positioning of the target pallet in the forklift navigation coordinate system is achieved by integrating BDS positioning data through coordinate transformation. This method is robust in response to lighting influences and can accurately locate the target pallet. The experimental results show that the pallet positioning error is less than 20 mm, and the rotation angle error is less than 0.37°, which meets the accuracy requirements for automated forklift operations.
The Evolving Stethoscope: Insights Derived from Studying Phonocardiography in Trainees
Authors: Nazari Matthew A. , Ahn Jaeil , Collier Richard , Jacob Joby , Heussner Halen , Doucet-O’Hare Tara , Pacak Karel , Raman Venkatesh , Farrish Erin
Published: August 2024

Phonocardiography (PCG) is used as an adjunct to teach cardiac auscultation and is now a function of PCG-capable stethoscopes (PCS). To evaluate the efficacy of PCG and PCS, the authors investigated the impact of providing PCG data and PCSs on how frequently murmurs, rubs, and gallops (MRGs) were correctly identified by third-year medical students. Following their internal medicine rotation, third-year medical students from the Georgetown University School of Medicine completed a standardized auscultation assessment. Sound files of 10 different MRGs with a corresponding clinical vignette and physical exam location were provided with and without PCG (with interchangeable question stems) as 10 paired questions (20 total questions). Some (32) students also received a PCS to use during their rotation. Discrimination/difficulty indexes, comparative chi-squared, and McNemar test p-values were calculated. The addition of phonocardiograms to audio data was associated with more frequent identification of mitral stenosis, S4, and cardiac friction rub, but less frequent identification of ventricular septal defect, S3, and tricuspid regurgitation. Students with a PCS had a higher frequency of identifying a cardiac friction rub. PCG may improve the identification of low-frequency, usually diastolic, heart sounds but appears to worsen or have little effect on the identification of higher-frequency, often systolic, heart sounds. As digital and phonocardiography-capable stethoscopes become more prevalent, insights regarding their strengths and weaknesses may be incorporated into medical school curricula, bedside rounds (to enhance teaching and diagnosis), and telemedicine/tele-auscultation efforts.
Phase-Based Gait Prediction after Botulinum Toxin Treatment Using Deep Learning
Authors: Khan Adil , Galarraga Omar , Garcia-Salicetti Sonia , Vigneron Vincent
Published: August 2024

Gait disorders in neurological diseases are frequently associated with spasticity. Intramuscular injection of Botulinum Toxin Type A (BTX-A) can be used to treat spasticity. Providing optimal treatment with the highest possible benefit–risk ratio is a crucial consideration. This paper presents a novel approach for predicting knee and ankle kinematics after BTX-A treatment based on pre-treatment kinematics and treatment information. The proposed method is based on a Bidirectional Long Short-Term Memory (Bi-LSTM) deep learning architecture. Our study’s objective is to investigate this approach’s effectiveness in accurately predicting the kinematics of each phase of the gait cycle separately after BTX-A treatment. Two deep learning models are designed to incorporate categorical medical treatment data corresponding to the injected muscles: (1) within the hidden layers of the Bi-LSTM network, (2) through a gating mechanism. Since several muscles can be injected during the same session, the proposed architectures aim to model the interactions between the different treatment combinations. In this study, we conduct a comparative analysis of our prediction results with the current state of the art. The best results are obtained with the incorporation of the gating mechanism. The average prediction root mean squared error is 2.99° (R2 = 0.85) and 2.21° (R2 = 0.84) for the knee and the ankle kinematics, respectively. Our findings indicate that our approach outperforms the existing methods, yielding a significantly improved prediction accuracy.
Intra-Pulse Modulation Recognition of Radar Signals Based on Efficient Cross-Scale Aware Network
Authors: Liang Jingyue , Luo Zhongtao , Liao Renlong
Published: August 2024

Radar signal intra-pulse modulation recognition can be addressed with convolutional neural networks (CNNs) and time–frequency images (TFIs). However, current CNNs have high computational complexity and do not perform well in low-signal-to-noise ratio (SNR) scenarios. In this paper, we propose a lightweight CNN known as the cross-scale aware network (CSANet) to recognize intra-pulse modulation based on three types of TFIs. The cross-scale aware (CSA) module, designed as a residual and parallel architecture, comprises a depthwise dilated convolution group (DDConv Group), a cross-channel interaction (CCI) mechanism, and spatial information focus (SIF). DDConv Group produces multiple-scale features with a dynamic receptive field, CCI fuses the features and mitigates noise in multiple channels, and SIF is aware of the cross-scale details of TFI structures. Furthermore, we develop a novel time–frequency fusion (TFF) feature based on three types of TFIs by employing image preprocessing techniques, i.e., adaptive binarization, morphological processing, and feature fusion. Experiments demonstrate that CSANet achieves higher accuracy with our TFF compared to other TFIs. Meanwhile, CSANet outperforms cutting-edge networks across twelve radar signal datasets, providing an efficient solution for high-precision recognition in low-SNR scenarios.
Analyzing Diabetes Detection and Classification: A Bibliometric Review (2000–2023)
Authors: Ferdaus Jannatul , Rochy Esmay Azam , Biswas Uzzal , Tiang Jun Jiat , Nahid Abdullah-Al
Published: August 2024

Bibliometric analysis is a rigorous method to analyze significant quantities of bibliometric data to assess their impact on a particular field. This study used bibliometric analysis to investigate the academic research on diabetes detection and classification from 2000 to 2023. The PRISMA 2020 framework was followed to identify, filter, and select relevant papers. This study used the Web of Science database to determine relevant publications concerning diabetes detection and classification using the keywords “diabetes detection”, “diabetes classification”, and “diabetes detection and classification”. A total of 863 publications were selected for analysis. The research applied two bibliometric techniques: performance analysis and science mapping. Various bibliometric parameters, including publication analysis, trend analysis, citation analysis, and networking analysis, were used to assess the performance of these articles. The analysis findings showed that India, China, and the United States are the top three countries with the highest number of publications and citations on diabetes detection and classification. The most frequently used keywords are machine learning, diabetic retinopathy, and deep learning. Additionally, the study identified “classification”, “diagnosis”, and “validation” as the prevailing topics for diabetes identification. This research contributes valuable insights into the academic landscape of diabetes detection and classification.
New Design and Characteristics of Probiotics Immobilized on a Clinoptilolite-Containing Tuff
Authors: Ilinskaya Olga , Galeeva Antonina , Glukhov Michael , Kurdy William , Zelinikhin Pavel , Kolpakov Alexey , Yakovleva Galina , Lopatin Oleg
Published: August 2024

Increasing the biological effectiveness of probiotic preparations requires the development of new stable forms in the gastrointestinal tract. Live bacteria immobilized on a sorbent belong to the latest, fourth generation of probiotics, which ensures a prolonged effect. This study is devoted to developing a new method of preparing active lactobacilli on a natural mineral carrier, a tuff containing zeolite of the clinoptilolite group, which is among the most common authigenic silicate minerals that occur in sedimentary rocks and is known as a safe ion-exchange and adsorbing detoxicant. Among the characterized lactobacilli, strains of L. plantarum, L. acidophilus, and L. crispatus possessed a high level of acid formation and stability in gastrointestinal fluids. The protective effect of the clinoptilolite-containing tuff was registered when the samples were incubated in gastric juice. The optimal technological conditions for immobilization and lyophilization were determined, and the preservation of the viability and probiotic properties of bacteria was confirmed during 8 months of storage. The release of bacteria from the carrier occurred gradually over 12 h. The data obtained show how promising the new preparation is, combining the ability to detoxify harmful intestinal metabolites and the prolonged release of probiotics.
A Gendered Lens on Mediation and Market Governance: Experiences of Women Market Vendors in Papua New Guinea
Authors: Langa Wilma , Kauli Jackie , Thomas Verena
Published: August 2024

The majority of market vendors at urban informal markets in Papua New Guinea are women. They face vulnerabilities related to safety, security and infrastructural support. They operate within male-dominated mediation structures where women’s contributions to mediation and market governance are often invisible. However, in this article, we demonstrate how women market vendors contribute to the social aspect of market governance, particularly addressing issues of law and order within Awagasi market. Through the efforts of women vendors in mediation and conflict management, safety in the market and normal operation of the informal market have improved. The study involved 18 women market vendors, as well as male market vendors, at Awagasi market. It used focus group discussions, interviews and creative mapping to examine the different roles of women market vendors regarding mediation and market governance at Awagasi market. The study revealed the different roles women play and their social innovations in keeping peace and order in the market. Recognising women’s agency in conflict management can support the promotion and strengthening of safe market spaces in urban environments.
Fully Dual-Portal Robotic-Assisted Thoracic Surgery (F-DRATS) and Indocyanine Green-Navigated Segmentectomy
Authors: Kuzmych Khrystyna , Sassorossi Carolina , Nachira Dania , Congedo Maria Teresa , Margaritora Stefano , Meacci Elisa
Published: August 2024

Background: In the landscape of thoracic surgery, innovation continually drives progress, offering novel approaches to address complex pathologies while prioritizing patient well-being. Dual-port robotic-assisted thoracic surgery (DRATS) represents a new frontier in this evolution. In this report, we describe our experience with the fully dual-port robotic-assisted thoracic surgery (F-DRATS) approach for segmentectomy with the indocyanine green intersegmental plane identification. Methods: We define as F-DRATS the robotic thoracic surgery performed by two intercostal incisions without rib spreading, using the robotic camera, robotic dissecting instruments, and exclusively robotic staplers. We herein describe our F-DRATS approach in lingulectomy and lymphadenectomy of stations 5, 6, 7, and 10 using the da Vinci Surgical System. Results: The patient’s postoperative course was uneventful with the chest tube removed on the second postoperative day. The final pathological analysis confirmed a low-grade malignant potential adenocarcinoma, with a main diameter of 1.1 cm, at 3 cm from the lung margins. Conclusions: This is the first description in the literature of a F-DRATS lingulectomy with ICG intersegmental plane identification.
Assessing the Potential of Marine Renewable Energy in Mexico: Socioeconomic Needs, Energy Potential, Environmental Concerns, and Social Perception
Authors: Martínez M. Luisa , Chávez Valeria , Silva Rodolfo , Heckel Gisela , Garduño-Ruiz Erika Paola , Wojtarowski Astrid , Vázquez Gabriela , Pérez-Maqueo Octavio , Maximiliano-Cordova Carmelo , Salgado Karla , Landgrave Rosario , Mateos Efraín , Tapia Erik
Published: August 2024

Although the literature on Sustainable Development Goals (SDGs) is vast worldwide, studies in Mexico focusing on Marine Renewable Energy (MRE) and SDGs are only beginning to emerge. Despite this academic gap, Mexico has signed up for the United Nations SDGs, which include producing clean and affordable energy and reducing CO2 emissions to slow global warming. The country is, therefore, committed to implementing measures to help achieve these goals. This study is the first multidisciplinary analysis performed at a national level in Mexico, aimed at identifying sites for efficient Marine Renewable Energy (MRE) production while considering socioeconomic needs, environmental risks, and societal acceptance of the new technologies. We first calculated the energy potential from nearshore winds, waves, marine currents, and offshore thermal gradients. The results show that electricity needs are greater in the 11 states where levels of marginalization are highest. The production of MRE is feasible in three of these regions. However, because Mexico is home to significant natural coastal ecosystems and protected species, care is necessary to produce electricity while protecting Mexico’s megadiversity. Social perception of the use of MRE is variable: the inhabitants of some locations are willing to accept the new technologies, whereas those in others are not. MRE production in Mexico is feasible but will face environmental and social issues that must be addressed before deploying new devices in the oceans.
Diagnostic Evaluation of the Contribution of Complementary Training Subjects in the Self-Perception of Competencies in Ethics, Social Responsibility, and Sustainability in Engineering Students
Authors: Yepes Sara María , Montes Willer Ferney , Herrera Andres
Published: August 2024

Higher education institutions, as organizations that transform society, have a responsibility to contribute to the construction of a sustainable and resilient world that is aware of the collateral effects of technological advances. This is the initial phase of a research that aims to determine whether subjects in the complementary training area have a significant effect on ethical, social responsibility, and sustainability (ERS) competencies in engineering students at a public higher education institution (HEI). To this end, a quantitative approach was used, adopting a descriptive comparative cross-sectional design and applying a self-perception instrument to a population of 418 students in the first and last semesters of engineering undergraduate programs. As a result, it was found that students that took subjects in the complementary area did not show significant development in social responsibility and sustainability competencies but did in ethical dimensions. Furthermore, in the triad of ERS competencies, there was a significant difference in students over 36 years of age, suggesting that time and academic experience contribute to a greater understanding and application of ethical and moral principles. These results support the idea that ethics and social responsibility are the pillars of sustainability. The findings highlight the importance of intervening in these subjects and complementing them with educational strategies that promote the continuous development of ERS competencies throughout the entire training itinerary, not only in complementary subjects, but as cross-cutting components of all specific engineering discipline subjects.
Segments of Environmental Concern in Kuwait
Authors: Speece Mark , Aljamal Ali , Bagnied Mohsen
Published: August 2024

This discussion examines segmentation by environmental attitudes in Kuwait using a survey (n = 1121) of adult Kuwaiti citizens. Attitudes were measured with a shortened version of the Environmental Attitudes Inventory (EAI) scale as adapted in prior work about the UAE. Consistent with research suggesting that environmental attitudes frequently reflect local conditions, the dimensional structure in Kuwait was not very similar to that of the UAE case. The Kuwait data do, however, yield a dimensional structure which reflects the broader debate in the sustainability literature on the relative balance of environmental vs. socio-economic concerns. Cluster analysis on these dimensions yielded five distinct segments ranging from not very strong concern about either to strong concern about both, for focusing on one or the other. Policy implications of addressing different views about environmentalism are discussed.
Environmental Perception about Pedestrian Environment on Cultural Visitation Roads
Authors: Li Qin , Lv Shuangning , Cui Jingya , Zhang Jiawei , Liu Yijun
Published: August 2024

Cultural visitation routes represent an important opportunity for the public display of the famous historical and cultural city of Beijing, and its pedestrian environment, as a linear spatial carrier linking various historical and cultural attractions, is of great significance for the preservation of the famous historical and cultural city of Beijing through analysis of its spatial quality. At present, Beijing’s cultural visitation routes are in the stage of exploration and improvement, and scholars mainly focus on the selection, integration, and construction of cultural visitation routes in their research on cultural visitation routes, while the amount of research on the quality of the pedestrian environment for visitors is relatively small; in particular, the evaluation methods and indicator systems are still in the exploration stage. In this study, from the perspective of environmental behaviour theory, we took the Forbidden City–The Red House of Peking University–Wangfujing cultural visitation route as the research object and constructed a structural equation model to determine the perception of the pedestrian environment quality of the cultural visitation route in Beijing, starting from the visitors’ feelings of the pedestrian environment of the cultural visiting route. This study found that there is a positive correlation between the quality of spatial behaviours, the quality of the pedestrian environment, and the quality of the facilities on the emotional response of the visitors, with the quality of the facilities having the greatest impact on the emotional response of the visitors; among the observational variables, cultural and scientific facilities, spatial landscapes, street furniture, and safety play a more obvious role, and they are the main factors affecting the emotional response of the visitors. Based on the results of this study, an optimisation strategy for enhancing the pedestrian environments of Beijing’s cultural visitation routes is proposed to provide a reference for their design and optimisation.
The Role of 4IR-5IR Leadership-Management in the Adoption of Formal Methods
Authors: van der Poll John Andrew
Published: August 2024

Formal methods (FMs) have been cited as a viable methodology for developing high-quality software. However, the steep learning curve in efficiently using the underlying discrete mathematics and logic has hindered FMs’ adoption, leading to a decline in their initial interest in the 1980s. Traditionally, technical approaches have been pursued to address the FMs challenge. Having taken cognisance of a similar pre-4IR decline in AI, the researcher views FMs as technology and considers solutions at intersections of 4IR-5IR technology adoption, leveraged by the support of governors, termed leadership-management in this work. Following a qualitative research choice, scholarly literature is reviewed, and sets of qualitative propositions are defined to develop a conceptual framework for a 4IR-5IR leadership-management adoption of FMs. Aspects that emerged and are incorporated into the framework are cross-functional and executive levels of leadership, transformative, adaptive, and servant leadership styles, using FM tools that embed a high level of user experience, and 4IR technologies, augmented with 5IR human aspects. The framework is hoped to motivate a company’s leadership to contribute to technology and technical ICT-based decision-making increasingly. Future work in this area would involve securing input from practitioners and exercising the framework in an industrial setting.
Applying MBSE to Optimize Satellite and Payload Interfaces in Early Mission Phases
Authors: Slobin Shayna , Yoon Zizung , Fugger Susanne
Published: August 2024

The use of model-based systems engineering (MBSE) has been increasingly explored recently in industries that require multi-discipline engineering coordination. In the European space industry, applying MBSE for the engineering of space systems has been an ongoing undertaking on many missions. In the following paper, the MBSE activities in CAMEO conducted during the A/B1 phases of a typical Earth observation satellite engineered by Airbus are discussed in detail in the form of a case study. The analyses shown are based around the modeling of the spacecraft electrical interfaces in CAMEO. This model was used to automate electrical interface control documents (EICDs) and enable the control of electrical interface development. These methodologies were further put in the context of Airbus’ satellite design processes to assess the benefits of an MBSE approach to the current electrical interface engineering procedure and the potential for the reuse of CAMEO models between satellite projects. The reduction in system engineering effort through the reuse of models to modularly create similar satellite systems for efficient concept evaluation and comparison is a clear benefit.