bluuebunny/crossref_metadata_2025_split huggingface dataset:
Phased Array Radio Navigation System on UAVs: In-Flight Calibration
Authors: Okuhara Mika , Bryne Torleiv Håland , Gryte Kristoffer , Johansen Tor Arne 
Published: October 2023

AbstractGlobal Navigation Satellite Systems (GNSS) has been the primary positioning solution for Unmanned Aerial Vehicles (UAVs) due to their worldwide coverage, high precision and lightweight receivers. However, GNSS is prone to electromagnetic interference and malicious assaults, including jamming or spoofing because of its low signal-to-noise ratio (SNR). To ensure the continuity and protection of UAV operations, using redundant navigation systems is essential. In recent years, the phased array radio system (PARS) has established itself as a local navigation solution. PARS is robust towards malicious assaults because of an much higher SNR than GNSS regarding directed and encrypted transmission. An essential factor of PARS is that the orientation of the radio antenna at a ground station needs to be precisely determined to obtain the correct positioning of UAVs. This paper presents a method for extending a previously proposed calibration algorithm to estimate the ground antenna orientation with an inertial navigation system (INS) aided by redundant positioning sensors (GNSS, PARS or barometer) using a multiplicative extended Kalman filter (MEKF) so that the calibration can be activated during flights whenever GNSS is available. In other words, the proposed navigation system is essentially an aided-INS which switches between two modes depending on the availability of GNSS: calibration and GNSS aiding mode when GNSS is available (Mode 1) and PARS and barometer aiding mode when GNSS is unavailable (Mode 2). Considering that the navigation system needs to include the effect of Earth’s curvature for a long-distance flight, PARS horizontal measurement and the barometer measurement were treated independently, and the navigation equations were propagated in Earth Centred Earth Fixed (ECEF) frame. The independent treatment of barometer measurement, and the propagation in ECEF frame were also beneficial when using multiple ground antennas to have a common reference point and reference frame. The proposed method was validated using data (Inertial Measurement Unit (IMU), GNSS, PARS, Pixhawk autopilot (including barometer) measurements) collected during a field test. In the validation, GNSS was made available at the middle of the flight and the calibration mode was activated for 200s. The proposed navigation system successfully estimated the precise orientation of multiple ground antennas and the navigation solutions were verified using GNSS and Pixhawk autopilot solutions as ground truth.
Oxidation Behavior and Outward Diffusion of Al Along Oxide Grain Boundaries of FeCrAl Alloys Overdoped with Zr and Hf
Authors: Daradkeh Samer I. , Recalde Oscar , Mousa Marwan S. , Sobola Dinara , Boll Torben 
Published: October 2023

AbstractThe formation of the α-Al2O3 scale on reactive element (RE)-doped FeCrAl alloys is commonly believed to be primarily caused by inward oxygen transport along grain boundaries. However, this study suggests that metal ion outward diffusion also plays a role in the development of the oxide scales and their microstructural characteristics. The study examines the oxidation behavior and grain boundary outward diffusion of iron-chromium alloys containing ~ 10 at% aluminum and ~ 22 at% chromium, doped with an over-critical concentration of REs, i.e., Zr and Hf. All samples were investigated after thermal exposure at 1100 °C by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atom probe tomography (APT). As a result of the overdoping, a considerable increase in oxide growth, an increase in the depth of internal oxidation, and RE-oxide formation near and at oxide grain boundaries (GBs) were observed as a consequence of increased inward and outward diffusion. The effect of overdoping manifests itself differently depending on the RE type and amount due to different solubility, ionic size, and electronic structure of alumina. The sample with Zr retained the adhesion of alumina to the alloy after the first and second thermal exposure, while Hf overdoping resulted in severe spallation after the second thermal exposure.
“Where lies the grail? AI, common sense, and human practical intelligence”
Authors: Hasselberger William , Lott Micah 
Published: October 2023

AbstractThe creation of machines with intelligence comparable to human beings—so-called "human-level” and “general” intelligence—is often regarded as the Holy Grail of Artificial Intelligence (AI) research. However, many prominent discussions of AI lean heavily on the notion of human-level intelligence to frame AI research, but then rely on conceptions of human cognitive capacities, including “common sense,” that are sketchy, one-sided, philosophically loaded, and highly contestable. Our goal in this essay is to bring into view some underappreciated features of the practical intelligence involved in ordinary human agency. These features of practical intelligence are implicit in the structure of our first-person experience of embodied and situated agency, deliberation, and human interaction. We argue that spelling out these features and their implications reveals a fundamental distinction between two forms of intelligence in action, or what we call “efficient task-completion” versus “intelligent engagement in activity.” This distinction helps us to see what is missing from some widely accepted ways of thinking about human-level intelligence in AI, and how human common sense is actually tied, conceptually, to the ideal of practical wisdom, or good (normative) judgment about how to act and live well. Finally, our analysis, if sound, also has implications for the important ethical question of what it means to have AI systems that are aligned with human values, or the so-called “value alignment” problem for artificial intelligence.
The Opportunities and Challenges for Artificial Intelligence to Improve Sepsis Outcomes in the Paediatric Intensive Care Unit
Authors: Aslan Abdullah Tarik , Permana Budi , Harris Patrick N. A. , Naidoo Kuban D. , Pienaar Michael A. , Irwin Adam D. 
Published: October 2023

Abstract
Purpose of Review
To describe existing applications of artificial intelligence (AI) in sepsis management and the opportunities and challenges associated with its implementation in the paediatric intensive care unit.

Recent Findings
Over the last decade, significant advances have occurred in the use of AI techniques, particularly in relation to medical image analysis. Increasingly, these techniques are being applied to a broad array of datasets. The availability of both structured and unstructured data from electronic health records, omics data and digital technologies (for example, portable sensors) is rapidly extending the range of applications for AI. These techniques offer the exciting potential to improve the recognition of sepsis and to help us understand the pathophysiological pathways and therapeutic targets of sepsis.

Summary
Although AI has great potential to improve sepsis management in children, significant challenges need to be overcome before it can be successfully implemented to change healthcare delivery.
Roles of Neuronal Protein Kinase Cε on Endoplasmic Reticulum Stress and Autophagic Formation in Diabetic Neuropathy
Authors: Kan Yu-Yu , Chang Ying-Shuang , Liao Wen-Chieh , Chao Tzu-Ning , Hsieh Yu-Lin 
Published: October 2023

AbstractIn chronic diabetic neuropathy (DN), the cellular mechanisms of neuropathic pain remain unclear. Protein kinase C epsilon (PKCε) is an intracellular signaling molecule that mediates chronic pain. This paper addresses the long-term upregulated PKCε in DN associated with endoplasmic reticulum (ER) stress and autophagic formation and correlates to chronic neuropathic pain. We found that thermal hyperalgesia and mechanical allodynia course development were associated with PKCε upregulation after DN but not skin denervation. Pathologically, PKCε upregulation was associated with the expression of inositol-requiring enzyme 1α (IRE1α; ER stress–related molecule) and ubiquitin D (UBD), which are involved in the ubiquitin-proteasome system (UPS)-mediated degradation of misfolded proteins under ER stress. Manders coefficient analyses revealed an approximately 50% colocalized ratio for IRE1α(+):PKCε(+) neurons (0.34–0.48 for M1 and 0.40–0.58 for M2 Manders coefficients). The colocalized coefficients of UBD/PKCε increased (M1: 0.33 ± 0.03 vs. 0.77 ± 0.04, p < 0.001; M2: 0.29 ± 0.05 vs. 0.78 ± 0.04; p < 0.001) in the acute DN stage. In addition, the regulatory subunit p85 of phosphoinositide 3-kinase, which is involved in regulating insulin signaling, exhibited similar expression patterns to those of IRE1α and UBD; for example, it had highly colocalized ratios to PKCε. The ultrastructural examination further confirmed that autophagic formation was associated with PKCε upregulation. Furthermore, PKCεv1-2, a PKCε specific inhibitor, reverses neuropathic pain, ER stress, and autophagic formation in DN. This finding suggests PKCε plays an upstream molecule in DN-associated neuropathic pain and neuropathology and could provide a potential therapeutic target.
Impact of segmentation algorithms on multisensor LULC classification in a semiarid Mediterranean area
Authors: Valdivieso-Ros Carmen , Alonso-Sarría Francisco , Gomariz-Castillo Francisco 
Published: October 2023

AbstractGeographic object-based image analysis methods usually provide better results than pixel-based methods for classifying land use and land cover from high and medium resolution satellite imagery. This study compares the results of Random Forest (RF) and Multilayer Perceptron (MLP) when used to classify the segments obtained on an RGB+NIR Sentinel-2 image using three different segmentation algorithms, Multiresolution (MR), Region Growing (RG), and Mean-Shift (MS). The hyperparameters of these algorithms were optimised minimising the intra-object heterogeneity and maximizing the inter-object heterogeneity, integrating them in an optimization loop. Geometric and two different centrality and dispersion statistics were computed from some Sentinel-1, Sentinel-2 and LiDAR variables over the segments, and used as features to classify the datasets. The highest segment cross-validation accuracies were obtained with RF using MR segments: 0.9048 (k=0.8905), while the highest accuracies calculated with test pixels were obtained with MLP using MR segments: 0.9447 (k=0.9303), both with the mean and standard deviation of the feature set. Although the overall accuracy is quite high, there are problems with some classes in the confusion matrix and, significant misclassification appear when a qualitative analysis of the final maps is performed, indicating that the accuracy metrics may be overestimated and that a qualitative analysis of the results may also be necessary.
Are agroforestry systems more productive than monocultures in Mediterranean countries? A meta-analysis
Authors: Scordia Danilo , Corinzia Sebastiano Andrea , Coello Jaime , Vilaplana Ventura Rosa , Jiménez-De-Santiago Diana Elisa , Singla Just Berta , Castaño-Sánchez Omar , Casas Arcarons Carme , Tchamitchian Marc , Garreau Léa , Emran Mohamed , Mohamed Sami Z. , Khedr Mai , Rashad Mohamed , Lorilla Roxanne Suzette , Parizel Alexandre , Mancini Giuseppe , Iurato Antonella , Ponsá Sergio , Dimauro Corrado , Gresta Fabio , Cosentino Salvatore Luciano , Testa Giorgio 
Published: October 2023

AbstractAgroforestry is gaining interest due to its potential in enhancing climate resilience and sustainability of farming systems. In this meta-analysis, the crop yield in agroforestry system compared to the control (sole crop) from thirty-six experimental field trials in Mediterranean countries was assessed. The response variable Wlog(RR) (i.e., the weighted natural logarithm of the response ratio) was analyzed by the 95% confidence intervals of mean and by fitting eight linear mixed models. Fixed effects, namely the tree cover (low, medium, high), the tree species (ash tree, chestnut, cork oak, holm oak, olive, poplar, walnut), and the crop species (alfalfa, barley, durum wheat, faba bean, forage, oat, pasture, pea, winter wheat) were significant (P = 0.030, P = 0.017, and P = 0.014, respectively), while the system type (alley cropping, silvo-arable, silvo-pastoral) was not. Among management practices (variety, pruning, fertilization, irrigation, crop age classes, imposed warming and drought, harvest time), only the fertilization significantly improved the response variable (P = 0.006), while the interaction of pruning × crop species was marginally significant (P = 0.065). Relatively large study heterogeneity was observed (Q = 72.6, I2 = 72%), which is quite common for agronomic meta-analysis. On the contrary, publication bias based on funnel plots and the Trim and Fill method suggested symmetrical distribution of studies. The sensitivity analysis for significant models identified room for improvements. Overall, we observed a negative effect of trees on crop yield that could be ascribed to the competition for light. Nonetheless, facilitation could be expected under extreme climate events, provided that agricultural practices will maximize synergies among tree cover, tree species, crop species, and management. Future works are encouraged to focus on the overall benefit agroforestry can provide at the field and landscape level, along with long-term monitoring to assess the whole lifespan of these systems and other companion planting options and designs in the Mediterranean region.
Alterazioni tiroidee nella fecondazione medicalmente assistita
Authors: Meomartino Letizia , Rossi Mattia , Giaccherino Ruth Rossetto , Pagano Loredana 
Published: October 2023

SommarioLe tecniche di riproduzione assistita sono ormai diventate parte integrante della gestione dell’infertilità. Una corretta funzione tiroidea è essenziale nel concepimento, nel proseguimento della gravidanza e nello sviluppo intrauterino del feto. Infatti, diversi studi confermano l’associazione tra disturbi tiroidei e alterazione della fertilità in ambo i sessi. Negli ultimi anni, è stato inoltre molto discusso il ruolo negativo degli auto-anticorpi anti-tiroide, in particolare degli anti-tireoperossidasi, in questo contesto, anche in assenza di alterazioni del profilo tiroideo. Questa rassegna si pone quindi come obiettivo la discussione delle disfunzioni tiroidee, in particolare autoimmuni, e della loro gestione, nei pazienti subfertili e durante i percorsi di riproduzione medicalmente assistita.
“But This Is the New Reality, and I Will Adapt”: Understanding Lecturers’ Experiences of COVID-19 Lockdown Online Learning and Teaching
Authors: van der Merwe Lynette J. , van Zyl Sanet , Joubert Gina 
Published: October 2023

AbstractFollowing the 2020 COVID-19 pandemic national lockdown in South Africa, the University of the Free State launched various support initiatives for academic staff and students. Teaching and learning activities and assessments were adapted for emergency remote teaching. Students and academic staff members experienced disruption due to the migration to the online environment. This study aimed to investigate the experiences of academic staff members in an undergraduate medical programme using a mixed-methods approach in the form of a sequential exploratory design in two phases. Quantitative data were obtained through an online questionnaire survey that were triangulated and complemented with qualitative data obtained from responses to open questions in the questionnaire survey and online reflective essays. Quantitative data revealed that although most academic staff members had received training in and used mostly administrative functions in the learning management system (Blackboard) prior to lockdown, its uses almost doubled during the lockdown. Qualitative data analysis gave an in-depth understanding of academic staff members’ experiences identified in the themes Teaching and Learning, Assessment, Technology, Communication, and Personal Experience. Concerns were expressed regarding students’ access to technology and adaptation to online learning, and training needs and challenges were identified. The lessons learnt through the resilient, transformative responses to this global disruptor can guide future strategies for medical education.
A comprehensive study of the estuary sea environment in the Bay of Bengal, near the Mahanadi River confluence
Authors: Pati Sharada Shrinivas , Nayak Sumitra , Mishra Sangeeta , Panda Bhabani Shankar , Mahala Suravi Susmita , Mohanty Sarat Kumar , Behera Rajaram , Mallick Niranjan , Murugesan Kailasam 
Published: October 2023

AbstractThis study focuses on the environmental conditions of the Mahanadi Estuary near Paradeep Harbor and the adjacent sea. Data collected from May 2013 to April 2020 from 32 GPS fixed stations was analyzed to assess the water quality in different zones (estuarine, mixed zone, mixed zone south, and mixed zone north) of study area. Parameters such as pH, SST, TSS, nitrite, phosphate, silicate, TOC, chlorophyll, fecal coliform, and heavy metals were used to estimate the Water Quality Index (WQI) for each zone. The study found a deterioration (> 30%) in the overall water quality of the Mahanadi Estuary from 2013 to 2020, potentially attributed to river inflows, port activities, and industrial outflows in to the coastal ecosystem. Seasonal variations in temperature, salinity, turbidity, nitrite, nitrate, and ammonia were observed. The water quality showed a deteriorating trend in estuarine, mixed zone, mixed zone south, and mixed zone north. Based on the water quality indices, the ecosystem shows moderate levels of stress. The degraded water quality highlights the need for a targeted mitigation plan to reduce external pressures and enhance the overall ecosystem quality.
Graphical Abstract
Cross cultural adaptation, validity and reliability of the Greek version of the Vividness of Movement Imagery Questionnaire-2 (VMIQ-2)
Authors: Plakoutsis George , Fousekis Konstantinos , Tsepis Elias , Papandreou Maria 
Published: October 2023

AbstractThe VMIQ-2 has been proven a valid and useful psychometric tool to measure the ability of vividness of movement imagery in sports. However, no validity study has been reported in Greek. The purpose of the present study was to examine the validity and reliability of the VMIQ-2 into Greek in adult athletes derived from various sports activities and different athletic levels. The VMIQ-2-GR (n = 160) was examined for translation, construct and discriminant validity, and also for internal consistency and test–retest reliability. CFA did not show acceptable global fit indices and only the index of (x2/df) showed an acceptable fit. The resulting factors of the EFA highlighted the discrepancy between the Greek version and the original version of the VMIQ-2. The results of the discriminant validity confirmed that the VMIQ-2-GR was well discriminated between subgroups of athletes and, therefore, showed a good discriminant validity. The Cronbach a coefficient was excellent at both measurements (> 0.92 in all cases for all factors). The Spearman rho correlation coefficients were statistically significant (< 0.001) with values > 0.47. The findings of the VMIQ-2–GR suggest that it is a valid and reliable tool and it can be used by sports psychologists, sports physiotherapists, coaches and researchers who aim to apply MI in the Greek athletic population.
RetroSeeker reveals the characteristics, expression, and evolution of a large set of novel retrotransposons
Authors: Huang Junhong , Chen Zhirong , Li Bin , Qu Lianghu , Yang Jianhua 
Published: October 2023

AbstractRetrotransposons are highly prevalent in most animals and account for more than 35% of the human genome. However, the prevalence, biogenesis mechanism and function of retrotransposons remain largely unknown. Here, we developed retroSeeker, a novel computational software that identifies novel retrotransposons from pairwise alignments of genomes and decodes their biogenesis, expression, evolution and potential functions. We discovered that the majority of new retrotransposons exhibit a specific L1 endonuclease cleavage motif, with some motifs precisely located ten nucleotides upstream of the insertion site. We identified that a large number of candidate functional genes might be generated through a retrotransposition mechanism. Importantly, we uncovered previously uncharacterized classes of retrotransposons related to histone genes, mitochondrial genes and vault RNAs. Moreover, we elucidated the tissue-specific expression of retrotransposons and demonstrated their ubiquitous expression in various cancer types. We also revealed the complex evolutionary patterns of retrotransposons and identified numerous species-specific retrotransposition events. Taken together, our findings establish a paradigm for discovering novel classes of retrotransposons and elucidating their new characteristics in any species.
Bush Kinders: Building Young Children’s Relationships with the Environment
Authors: Speldewinde Chris , Campbell Coral 
Published: October 2023

AbstractEarly childhood is an important time for building children’s affinity with nature and the environment. Early childhood professionals play a crucial role in developing young children’s understanding of the natural world. Over the past 50 years, there has been a movement in early childhood education and care contexts to provide young children with the opportunity to learn in natural surroundings such as forest schools and nature kindergartens. This research, occurred in four bush kinders, an Australian example of nature-based, early years education influenced by the forest school approach to education. In this paper we interrogate key ideas concerning environmental education, drawing on seminal empirical research, guiding curriculum documents such as Australia’s Early Years Learning Framework and government policy documents to build understandings of how children’s play can be observed by educators who can then support the children to develop their understandings of the natural world around them. Through ethnography, a methodology that uses both participation and observation of research participants, it became apparent that young children’s play-based learning offers opportunities for development of understandings of the environment. Applying a recent definition of environmental education from the US Environmental Protection Authority (2022), we analysed four vignettes which provide examples of educators and children’s interactions supporting children to build an affinity with nature observed during the research. This research’s implications are novel when considering the relatively new bush kinder approach to early childhood education as the findings remind us of the benefits of bush kinders in generating opportunities for young children’s environmental education.