Miracle-dz/UniFAR-FTUs huggingface dataset:
MAGINAV: Long-Term Accurate Navigation Algorithm Using Inertial and Magnetic Field Sensor Fusion

MAGINAV (MAGnetic Inertial NAVigation) algorithm provides accurate estimation of velocity, attitude and position in long-term. It is utilized in a specialized pedestrian navigation system that consists of a three-axis accelerometer, a three-axis gyroscope, and a three-axis magnetometer mounted on the shoe of a walking human. MAGINAV compensates for the attitude error, accumulated over time by using a second attitude estimation obtained by fusing the measurements of the accelerometer and the magnetometer Instead of employing a complex Attitude Heading Reference System (AHRS), MAGINAV utilizes the computationally efficient TRIAD algorithm, alongside two popular algorithms for zero-velocity detection and magnetic-disturbance detection respectively. The proposed algorithm undergoes testing in an outdoor environment using low-cost commercial inertial and magnetic field sensors. Remarkably, it achieves exceptional long-term accuracy, with a position error that is less than 0.25% of the total distance in a 20-minute walk spanning 1.3km.
In Situ Interface Characterization of Arcing Electrode Materials and Evolution in Electrical Endurance Experiments

The interface physics is very important to the electrical contact reliability of current switching devices. In this article, the arcing electrode material surface topographies are measured consecutively in the electrical endurance experiments. A novel data processing algorithm is proposed for reconstructing the real contact interface between electrodes. The characterization parameters of contact interface including ${a}$ -spots number, area, centroid distance, and contact resistance are extracted. The comparison between the experimental recorded resistance and the analytical calculation results shows the validity of the proposed method. In the electrical endurance testing, three typical evolution stages of electrical contact interface are presented and analyzed. The contact spots are limited to the surface peaks in the initial operations, and then distributed evenly across the whole electrode surface. At the end of the testing, the contact area decreases slowly with the shrinkage of central convex face. It is determined that the electrical material redistribution caused by the arc erosion is the root reason for the contact interface evolution.
Research of distribution of suspended sediments in Longyangxia reservoir based on RS

According to the spectrum characteristic of water with silt,the quantity of suspended sediments in water has a certain relation with the reflection of water in every band of visible light.After studying,the second and third bands of TM image can reflect the quantity of sand in water very well,and the combination of them can sthengthen the difference in the quantities of sand in water.So,in this paper Longyangxia reservoir is taken for example.Making use of the TM image with two temporal in this area,by extracting water,creating a map with 0 1 encoding,masking and density slicing,we develop a method identification of the distrbution of suspended sediments in water.After analyzing and comparing,we draw a conclusion that this method can use multi-band of images adequately,especially in areas lack of measured data,and can make a rich image of suspended sediments distribution quickly and effectively.
Vitreous Levels of Vascular Endothelial Growth Factor and Platelet-Derived Growth Factor in Patients with Proliferative Diabetic Retinopathy: A Clinical Correlation

Background: The global epidemic status of diabetic retinopathy (DR) and its burden presents an ongoing challenge to health-care systems. It is of great interest to investigate potential prognostic biomarkers of DR. Such markers could aid in detecting early stages of DR, predicting DR progression and its response to therapeutics. Herein, we investigate the prognostic value of intravitreal concentrations of vascular endothelial growth factor (VEGF) and platelet-derived growth factor (PDGF) in a DR cohort. Materials and methods: Vitreous sample acquisition was conducted at King Abdullah University Hospital (KAUH) between December 2020 and June 2022. Samples were obtained from any patient scheduled to undergo a pars plana vitrectomy (PPV) for any indication. Included patients were categorized into a DR group or a corresponding non-diabetic (ND) control group. Demographics, clinicopathological variables, standardized laboratory tests results, and optical coherence tomography (OCT) data were obtained for each included individual. Intravitreal concentrations of VEGF and PDGF were assessed using commercial enzyme-linked immunosorbent assay (ELISA). Results: A total of 80 eyes from 80 patients (DR group: n = 42 and ND control group: n = 38) were included in the analysis. The vitreous VEGF levels were significantly higher in the DR group compared to the ND control group (DR group 5744.06 ± 761.5 pg/mL versus ND control group 817.94 ± 403.1 pg/mL, p = 0.0001). In addition, the vitreous PDGF levels were also significantly higher in the DR group than those in the ND control group (DR group 4031.51 ± 410.2 pg/mL versus ND control group 2691.46 ± 821.0 pg/mL, p = 0.001). Bassline differences between test groups and clinical factors impacting VEGF and PDGF concentrations were investigated as well. Multiple regression analysis indicated PDGF as the sole independent risk factor affecting best-corrected visual acuity (BCVA) at the last follow-up visit: the higher the PDGF vitreous levels, the worst the BCVA. Conclusions: Vitreous concentrations of VEGF and PDGF are correlated with DR severity and may exhibit a possible prognostic potential value in DR. Further clinical and experimental data are warranted to confirm the observed findings and to help incorporate them into daily practice.
Integrated ocean drilling program expedition 317 preliminary report canterbury basin sea level global and local controls on continental margin stratigraphy

Material in this publication may be copied without restraint for library, abstract service, educational, or personal research purposes; however, this source should be appropriately acknowledged. Core samples and the wider set of data from the science program covered in this report are under moratorium and accessible only to Science Party members until 4 January 2011. Distribution: Electronic copies of this series may be obtained from the Integrated Ocean Drilling Program (IODP) Scientific Publications homepage on the World Wide Web at www.iodp. org/scientific-publications/. Disclaimer Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the participating agencies, IODP Abstract Integrated Ocean Drilling Program (IODP) Expedition 317 was devoted to understanding the relative importance of global sea level (eustasy) versus local tectonic and sedimentary processes in controlling continental margin sedimentary cycles. The expedition recovered sediments from the Eocene to recent period, with a particular focus on the sequence stratigraphy of the late Miocene to recent, when global sea level change was dominated by glacioeustasy. Drilling in the Canterbury Basin, on the eastern margin of the South Island of New Zealand, takes advantage of high rates of Neo-gene sediment supply, which preserves a high-frequency (0.1–0.5 m.y.) record of depositional cyclicity. The Canterbury Basin provides an opportunity to study the complex interactions between processes responsible for the preserved stratigraphic record of sequences because of the proximity of an uplifting mountain chain, the Southern Alps, and strong ocean currents. Currents have locally built large, elongate sediment drifts within the prograding Neogene section. Expedition 317 did not drill into one of these elongate drifts, but currents are inferred to have strongly influenced deposition across the basin, including in locations lacking prominent mounded drifts. Upper Miocene to recent sedimentary sequences were cored in a transect of three sites on the continental shelf (landward to basinward, Sites U1353, U1354, and U1351) and one on the continental slope (Site U1352). The transect provides a stratigraphic record of depositional cycles across the shallow-water environment most directly affected by relative sea level change. Lithologic boundaries, provisionally correlative with seismic sequence boundaries, have been identified in cores from each site and provide insights into the origins of seismically resolvable sequences. This record will be used to estimate the timing and amplitude of global sea level change and to document the sedimentary processes that operate during sequence formation. Sites U1353 …
The Metabolomics Response of Solanum melongena L. Leaves to Various Forms of Pb

Due to activities like mining and smelting, lead (Pb) enters the atmosphere in various forms in coarse and fine particles. It enters plants mainly through leaves, and goes up the food chain. In this study, PbXn (nano-PbS, mic-PbO and PbCl2) was applied to eggplant (Solanum melongena L.) leaves, and 379 differential metabolites were identified and analyzed in eggplant leaves using liquid chromatography–mass spectrometry. Multivariate statistical analysis revealed that all three Pb treatments significantly altered the metabolite profile. Compared with nano-PbS, mic-PbO and PbCl2 induced more identical metabolite changes. However, the alterations in metabolites related to the TCA cycle and pyrimidine metabolism, such as succinic acid, citric acid and cytidine, were specific to PbCl2. The number of differential metabolites induced by mic-PbO and PbCl2 was three times that of nano-PbS, even though the amount of nano-PbS absorbed by leaves was ten times that of PbO and seven times that of PbCl2. This suggests that the metabolic response of eggplant leaves to Pb is influenced by both concentration and form. This study enhances the current understanding of plants’ metabolic response to Pb, and demonstrates that the metabolomics map provides a more comprehensive view of a plant’s response to specific metals.
Triglyceride Glucose Index is Strongly Associated with a Fragility Fracture in Postmenopausal Elderly Females with Type 2 Diabetes Mellitus Combined with Osteoporosis: A 6-Year Follow-Up Study

Purpose The triglyceride glucose (TyG) index serves as an indicator of insulin resistance (IR), which is also associated with bone metabolism. However, research on the relationship between the TyG index and a fragility fracture in individuals with type 2 diabetes mellitus (T2DM) or osteoporosis (OP) remains sparse. This study aims to explore the association between the TyG index and fragility fracture risk in postmenopausal elderly females with T2DM combined with OP based on an ambispective cohort study. Patients and Methods A total of 220 postmenopausal women hospitalized with T2DM combined with OP between January 2015 and December 2020 were eligible for inclusion in this study. All participants were followed up every 6 months for 6 years with a median of 42 months. According to the tertiles of the TyG index, participants were divided into three groups: low-level (≤ 8.79, n =73), moderate-level (8.80–9.32, n=73), and high-level (≥ 9.33, n=74). The association between the TyG index and fragility fracture risk was then assessed. Results Out of 220 patients, 46 experienced fragility fracture events (20.9%). Multivariate Cox regression analysis showed that the TyG index was positively associated with a fragility fracture in postmenopausal women with T2DM combined with OP. Furthermore, compared to the low-level group, with the TyG index level increase by 1.0, the risk for fragility fracture increased 1.293-fold in the high-level group (HR=2.293, 95% CI=1.007–5.221, P < 0.05). Kaplan-Meier survival analysis indicated that fragility fractures were more likely to occur in patients with high levels of TyG index (log-rank, all P < 0.05). Conclusion Our study showed that the TyG index was strongly associated with a fragility fracture in postmenopausal women with T2DM combined with OP. Therefore, special attention should be paid to postmenopausal elderly females with T2DM combined with OP in routine clinical practice.
Impacts des tempêtes sur la morphologie d'un littoral microtidal : le site du Lido de Sète à Marseillan, Golfe du Lion

L'action des tempetes marines entraine souvent des reponses morphologiques rapides et des impacts importants sur les littoraux sableux : recul du trait de cote, submersion et erosion de la plage, franchissements et destruction des systemes dunaires et parfois de l'ensemble du cordon littoral, mais provoque egalement une importante dynamique des barres sedimentaires d'avant-cote. Dans le cadre du projet europeen MICORE (Morphological Impacts and COastal Risks induced by Extreme storm events), des campagnes de mesures sont menees depuis 2008 sur le Lido de Sete a Marseillan, afin de caracteriser la dynamique des morphologies sableuses lors des evenements energetiques. L'objectif principal de ces campagnes est d'etudier la variabilite des reponses morphologiques en fonction des differents facteurs de forcages hydrodynamiques (vagues, maree, surcote), atmospheriques (vent, depression atmospherique, precipitation) et sedimentaires (morphologie preexistante) lors des tempetes. Deux secteurs de plage a morphologies differentes ont ete suivis de maniere intensive par des techniques conventionnelles de topo-bathymetrie et d'hydrodynamique afin de caracteriser leurs reponses respectives aux tempetes marines. Le secteur sud est caracterise par la presence de deux barres d'avant-cote quasi-rectilignes et le secteur nord est caracterise par des morphologies sous-marines fortement tridimensionnelles (deux barres festonnees). Plusieurs tempetes majeures se sont produites lors de ce suivi (celles du 26 decembre 2008 et du 21 octobre 2009 sont les plus importantes). Elles presentaient des caracteristiques tres differentes en terme de hauteurs et periodes de la houle, mais egalement en terme de niveaux de surcote. Au niveau de la plage emergee, la reponse morphologique des deux secteurs est globalement identique et se traduit par des apports massifs de sable vers le haut de plage suite aux evenements les plus extremes. Pour la plage immergee, si le schema classique de recul des barres pendant les tempetes est observe sur les deux secteurs, la reponse tridimensionnelle est tres differente : au sud, la barre interne reste rectiligne quels que soient les forcages ; au nord, le systeme alterne entre des situations rectilignes, en croissants, ou en festons rompus, avec des transitions tres rapides. Les evolutions observees sur les deux zones semblent montrer que la cinetique des barres est principalement fonction du niveau d'agitation (Hs atteinte lors de l'evenement de houle). Toutefois, la morphologie preexistante joue un role predominant dans la transition entre les differents types de barres dans la zone N. Les leves, realises apres chaque coup de mer significatif (Hs>1,5 m) au cours du premier hiver, permettent de caracteriser des seuils morphogenes et mettent en evidence l'importance des processus inter-tempetes. En effet, le role des evenements de houle moderee se revele fondamental dans le retour aux conditions "d'equilibre".
Host Genetic Background Effect on Body Weight Changes Influenced by Heterozygous Smad4 Knockout Using Collaborative Cross Mouse Population

Obesity and its attendant conditions have become major health problems worldwide, and obesity is currently ranked as the fifth most common cause of death globally. Complex environmental and genetic factors are causes of the current obesity epidemic. Diet, lifestyle, chemical exposure, and other confounding factors are difficult to manage in humans. The mice model is helpful in researching genetic BW gain because genetic and environmental risk factors can be controlled in mice. Studies in mouse strains with various genetic backgrounds and established genetic structures provide unparalleled opportunities to find and analyze trait-related genomic loci. In this study, we used the Collaborative Cross (CC), a large panel of recombinant inbred mouse strains, to present a predictive study using heterozygous Smad4 knockout profiles of CC mice to understand and effectively identify predispositions to body weight gain. Male C57Bl/6J Smad4+/− mice were mated with female mice from 10 different CC lines to create F1 mice (Smad4+/−x CC). Body weight (BW) was measured weekly until week 16 and then monthly until the end of the study (week 48). The heritability (H2) of the assessed traits was estimated and presented. Comparative analysis of various machine learning algorithms for predicting the BW changes and genotype of mice was conducted. Our data showed that the body weight records of F1 mice with different CC lines differed between wild-type and mutant Smad4 mice during the experiment. Genetic background affects weight gain and some lines gained more weight in the presence of heterozygous Smad4 knockout, while others gained less, but, in general, the mutation caused overweight mice, except for a few lines. In both control and mutant groups, female %BW had a higher heritability (H2) value than males. Additionally, both sexes with wild-type genotypes showed higher heritability values than the mutant group. Logistic regression provides the most accurate mouse genotype predictions using machine learning. We plan to validate the proposed method on more CC lines and mice per line to expand the literature on machine learning for BW prediction.
Impact of Training and Development on Organizational Performance: a Mediating Role of Employee Performanceimpact of Training and Development on Organizational Performance: a Mediating Role of Employee Performance

The study aims to examine the impact of training and development on organizational performance, with a mediating role of employee performance. The importance of Human Resource Management (HRM) practices in achieving organizational success has gained recognition, as organizations realize that it is people who drive their performance. However, many companies have not fully embraced HRM practices, including training and development, due to affordability, fear, or a lack of understanding of their value and contribution. The primary objective of HRM is to ensure organizational success through a competitive, competent, and self-motivated workforce. Rigorous HRM practices, particularly training and development, play a vital role in achieving this objective. Extensive research has been conducted to establish the connection between HRM practices and organizational performance, and numerous studies have found positive relationships between them. This study will be investigating the impact of training and development on an organizational performance. Additionally, the study aims to examine the mediating role of employee performance between HRM practices and organizational perceived performance. The findings of this study will be contributing to the existing body of knowledge on HRM practices and their impact on organizational performance. It will provide insights into the significance of training and development in enhancing employee performance and subsequently driving organizational success. The study will also shed light on the mediating role of employee performance in the relationship between HRM practices and organizational perceived performance. By understanding the linkages between training and development, employee performance, and organizational performance, organizations can make informed decisions about the implementation and improvement of HRM practices. Ultimately, this study aims to highlight the importance of effective HRM practices, particularly training, and development, in achieving organizational success in today's competitive business environment.
The geography of choice and diversity in the ‘new’ secondary education market of England

The geography of education remains an under-researched area, particularly in light of major transformations in education provision over the last two decades. This paper reaffirms the position of a geographical approach to studying the education system by focussing upon the differential impact of two major features of national policy reforms on secondary school admissions in England: the desire to enhance choice and diversity in the provision of schooling.
Teleseismic wavefield interpolation and signal extraction using high-resolution linear radon transforms

SUMMARY We present a new application of a method based on the radon transform for data interpolation and signal-to-noise separation of teleseismic wavefields recorded by regional seismic arrays. The method exploits the plane wave nature of direct arrivals and receiver side scattered ar- rivals from regional scale structure by decomposing the recorded wavefield into a plane wave basis (linear radon transform). Casting the radon transform as an inversion problem allows the incorporation of time-dependent weighting schemes and model variance tuning which are helpful in minimizing artefacts related to the transform process while enhancing lower ampli- tude arrivals. The procedure begins with an estimate radon transform of the input data panel. A mute is applied in the radon domain to isolate portions of the radon panel that represent plane waves with different moveouts (∼±.025 s km −1 ) relative to the direct arrival. The inverse transform of the estimated noise is subtracted from the input data to produce an estimate of the desired signal without plane waves following undesired moveouts, white ambient noise, and arrivals not represented well by plane waves (diffractions). Inverse transformation of estimated signal in the radon domain produces a natural way to interpolate in the data domain due to the implicit assumption that a plane wave basis provides the most compact representation of the teleseismic wavefield. This processing scheme presents an important addition to standard teleseismic imaging processing flows that attempt to exploit irregularly, sampled data.
Image Matching and Bundle Adjustment Using Vehicle-based Panoramic Camera

A new matching and GPS/IMU supported bundle adjustment method for vehicle-based panoramic image series is presented.Firstly,multi-features are extracted and preliminarily matched in the separate fisheye images,and the correspondents are projected to panoramic coordinate,and then gross error detection and second matching are done with GPS/IMU and LiDAR data.Secondly,the modified perspective transformation geometric model is constructed under panoramic coordinate,and by the model and GPS/IMU data bundle adjustment is carried out with the original weights set by the distance between object points to panoramic camera center.After gross errors excluded by varying weight method the adjustment results are gotten.The tests results proved that the multi-feature matching method and adjustment method under panoramic coordinate can goodly deal with the tie-points extraction and bundling for non-plane camera imagery.
Geophysics of Chemical Heterogeneity in the Mantle

Chemical heterogeneity, produced by the near-surface rock cycle and dominated volumetrically by subducted oceanic crust and its depleted residue, is continuously subducted into the mantle. This lithologic-scale chemical heterogeneity may survive in the mantle for as long as the age of Earth because chemical diffusion is inefficient. Estimates of rates of subduction and mantle processing over geologic history indicate that most or all of the mantle may be composed of lithologically heterogeneous material. Mineralogical models of the mantle show that chemical heterogeneity over many decades in length scale may be detectable by geophysical probes via its influence on seismic-wave propagation. Grain-scale heterogeneity influences the aggregate absolute seismic velocity and its lateral variation with temperature. The elastic-wave velocity contrast associated with lithologic-scale heterogeneity may be sufficient to produce observable scattering of short-period seismic waves.