Miracle-dz/UniFAR-FTUs huggingface dataset:
Surface waves in fiber-reinforced anisotropic general viscoelastic media of higher orders with voids, rotation, and electromagnetic field

ABSTRACT In this article, we investigated an effect of external magnetic field on the propagation of surface waves in a perfect electrically conducting fiber-reinforced anisotropic general viscoelastic media of rational and higher orders with voids in a rotating medium. The general surface wave speed is derived to investigate effect of electromagnetic field and rotation on surface waves in the presence of voids and viscosity. Boundary conditions are applied to obtain the secular equation for generalized types of waves. Particular cases of Stoneley, Love and Rayleigh waves are derived. The results obtained are more general in the sense that some earlier published results are obtained from our result as special cases. In the absence of voids, the results for viscoelasticity of order zero are in good agreement with the fiber-reinforced materials. Also by neglecting the reinforced elastic parameters, the results reduce to a well-known isotropic medium. It is observed that surface waves cannot propagate in a strong initially applied electromagnetic field and rotation. Numerical results for particular cases have been obtained and displayed graphically. The results indicate that the effects of voids, anisotropic, fiber-reinforcement, rotation and electromagnetic field are very pronounced and applicable for the phenomena.
The Microbiological Burden of Short-Term Catheter Reuse in Individuals with Spinal Cord Injury: A Prospective Study

Despite the risk of developing catheter-associated urinary tract infections (CAUTI), catheter reuse is common among people with spinal cord injury (SCI). This study examined the microbiological burden and catheter surface changes associated with short-term reuse. Ten individuals with chronic SCI reused their catheters over 3 days. Urine and catheter swab cultures were collected daily for analysis. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analyses were used to assess catheter surface changes. Catheter swab cultures showed no growth after 48 h (47.8%), skin flora (28.9%), mixed flora (17.8%), or bacterial growth (5.5%). Asymptomatic bacteriuria was found for most participants at baseline (n = 9) and all at follow-up (n = 10). Urine samples contained Escherichia coli (58%), Klebsiella pneumoniae (30%), Enterococcus faecalis (26%), Acinetobacter calcoaceticus–baumannii (10%), Pseudomonas aeruginosa (6%) or Proteus vulgaris (2%). Most urine cultures showed resistance to one or more antibiotics (62%). SEM images demonstrated structural damage, biofilm and/or bacteria on all reused catheter surfaces. XPS analyses also confirmed the deposition of bacterial biofilm on reused catheters. Catheter surface changes and the presence of antibiotic-resistant bacteria were evident following short-term reuse, which may increase susceptibility to CAUTI in individuals with SCI despite asymptomatic bacteriuria.
Towards efficient identification of linear parameter-varying state-space models

• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers.
Vlasiator From local to global magnetospheric hybrid-Vlasov simulations

The Sun is the source of the solar wind, a continuous stream of electrically charged particles and magnetic fields pervading the Solar system. Its interaction with the magnetic field of the Earth, in and around the region called the magnetosphere, controls the flow of matter and energy in near-Earth space. A fundamental understanding of the physical processes at play is crucial for the building of forecasting and warning systems, as the influence of the solar wind during space storms can harm life and technology in space and on the ground. These effects, collectively known as space weather, are one of the biggest albeit least understood natural threats to society. The research effort needed includes the development of observational methods as well as theories and models, to first describe and later predict the mechanisms and consequences of space weather. This doctoral thesis, comprising an introduction and four peer-reviewed articles, presents the hybrid-Vlasov model Vlasiator developed at the Finnish Meteorological Institute. Based on a detailed description of proton physics in space plasmas, Vlasiator allows to simulate both local contexts and the Earth’s magnetosphere on global scales. This unprecedented capability is only accessible by harnessing the power of modern supercomputers. The aim of this work is threefold. The current version of Vlasiator is documented considering physical and computational aspects, the correctness of the simulations is demonstrated by comparing to analytical theories and spacecraft observations, and new scientific results gained with this model are presented. Publishing unit Finnish Meteorological Institute Classification (udc) 533.9; 551.510. 537; 519.63; 004.272. 2
The independent effects of prosodic structure and information status on tonal coarticulation

Various factors constrain the production of a sequence of lexical tones. Thisstudy aims to test the joint influence of three important ones: tonal coarticulation,prosodic structure, and information status. F0 realization of rising andfalling tones, in both compatible and conflicting tonal contexts, was comparedacross two prosodic conditions (prosodic headedness and boundary depth) andtwo focus conditions (with vs. without narrow focus). Results show that in conflictingtonal contexts, where salient coarticulatory adjustment of F0 trajectoriesis to be expected, both prosodic structure and information status influencedthe implementation of F0 slopes, albeit in different ways. These findings lendsupport to the proposal that information status and prosodic structure exertindependent prosodic strengthening effects on tonal implementation.
Asymptotic behavior of the Rao–Nakra sandwich beam model with Kelvin–Voigt damping

The Rao–Nakra sandwich beam is a coupled system consisting of two wave equations for the longitudinal displacements of the top and bottom layers and an Euler–Bernoulli beam equation for the transversal displacement. This paper concerns the system’s stability when the Kelvin–Voigt damping terms act on the first and third equations. Using the semigroup theory of linear operators, we prove the global well-posedness of the associated initial boundary value problem. And then, we prove the lack of exponential stability of the system. Because of this lack of exponential stability, we study the polynomial stability and prove that the system decays with rate t − 1 4 . We further prove that this decay rate is optimal.
Landslide Risk Evaluation in Shenzhen Based on Stacking Ensemble Learning and InSAR

Construction activities of accelerated urbanization in Shenzhen have increased the landslide risk area, which has intensified the potential threat to human and natural environment. However, the risk of landslides in Shenzhen is poorly evaluated. In this article, a landslide risk evaluation (LRE) model is constructed using landslide susceptibility map (LSM) and landslide vulnerability. In the experiment, a stacking ensemble learning (SEL) model is constructed based on convolutional neural network (CNN), multilayer perceptron, gated recurrent unit (GRU), and support vector machine regression to generate LSM by using topography, geology, human engineering activities, time-series precipitation, and time-series normalized difference vegetation index. Road network, building distribution density and annual average precipitation data are used to evaluate landslide vulnerability based on entropy weight method. In this article, multiple statistical indicators are used to evaluate the performance of the LSM model, and Interferometric Synthetic Aperture Radar (InSAR) deformation data are utilized to verify the LRE results in Shenzhen. The results show that the SEL method has more refined results for LSM, with a best overall evaluation accuracy, especially in the receiver operating characteristic curve, where the accuracy is improved by nearly 8%. In LRE of Shenzhen, very high, high, moderate, low, and very low risk areas account for 0.283%, 0.451%, 0.859%, 36.890%, and 61.517%, respectively. In most of very high-risk area, InSAR deformation results show a clear concentrated deformation trend with a large deformation rate. Research results can provide technical and data support for landslide disaster prevention in Shenzhen.
Mathematical Modeling in Cellular Dynamics: Applications to Cancer Research

This thesis fits into the general framework of the study of population dynamics. The population particularly considered in this work is comprised of stem cells with both cases of healthy and cancerous cells being investigated. We propose and analyze three mathematical models describing stem cells dynamics. The first model is an age-structured partial differential model that we reduce to a delay differential system using the characteristics method. We investigate the existence and stability of the steady states of the reduced delay differential system. We, then, conduct some numerical simulations to illustrate the behavior of the steady states. In the second model, the duration of the cell cycle is considered to depend upon the total population of quiescent cells. The method of characteristics reduces the age-structured model to a system of differential equations with a state-dependent delay. We perform a detailed stability analysis of the resulting delay differential system. We confirm the analytical results by numerical simulations. The third and final model, proposed in this thesis, is an ordinary differential equations model describing healthy and cancerous stem cells dynamics and their interactions with immune system responses. Through this model, we show that the frequency, the duration of infections and their action (positive or negative) on immune responses may impact significantly tumor proliferation.
High-temperature gas effects at a capsule under re-entry and wind-tunnel conditions

The article presents numerical results on the steady flow along the windward facing side of a generic capsule geometry at hypersonic velocities. As the work is part of a joint German research group, cold wind-tunnel conditions as well as hot re-entry conditions are included in the paper. For the Mach number 5.9, the steady flow at 0◦ angle of attack is presented at ideal-gas conditions. For the conditions along a re-entry path for M=5.9 and M=20, the influence of thermal and chemical non-equilibrium on the temperature and velocity distribution in the area between the shock and the surface (including the boundary layer) is shown. For the cold wind-tunnel conditions, the boundary-layer is almost entirely subsonic. The M=5.9 re-entry conditions exhibit maximum temperatures up to about 1900K, which is not high enough for a substantial influence of non-equilibrium effects on the boundary layer. For the M=20 case, the boundary layer thickens considerably in the presence of non-equilibrium effects. The immediate post-shock temperature are elevated by a factor of 2-3 in the non-equilibrium case compared to the chemical equilibrium conditions. It takes about one third of the shock stand-off distance for the non-equilibrium to come back to the equilibrium temperatures for the current set-up. The influence of the non-equilibrium on the boundary layer is shown.
Sensory-enabling Technology in M-commerce: The Effect of Haptic Stimulation on Consumer Purchasing Behavior

ABSTRACT Haptics are innovative sensory-enabling technologies that can be used to improve consumers’ online shopping experiences. These technologies can be used in addition to other actual sensory stimulation, such as visual and auditory. However, little is known of how the addition of haptics affects consumers’ mobile shopping behavior. Therefore, this article examines the effect of the presence of haptic feedback (i.e., vibrations) when shopping on a retailer mobile app. Drawing on the results of three quantitative studies, the findings show that the presence of haptic feedback influences consumer behavior, but consumers’ perceptions modify the outcome, which is also moderated by individual need for touch. Moreover, the findings herein show a sequential mediating effect of psychological and affective variables on purchasing outcomes. These findings therefore stress the importance of considering haptics as a potential economic value for online shopping. Accordingly, we suggest that retailers should be more aware of their online sensory strategies and think about disclaimers and personalizing the consumer interface (e.g., turning off the haptic feedback).
Realtime News Analysis using Natural Language Processing

Fake news has become a huge issue in present times; it is both a societal and technical issue. It is difficult for companies to identify as the term covers different meanings like satire, false tales, factual errors, misleading headlines, and propaganda. Social media plays a crucial role in spreading fake news. It is propagated over different social networking sites and creates confusion, biases, and induces fear among people. Different approaches have been implemented over the years. Despite all the different trials, fake news remains a crucial challenge. The application will analyze the news and classify it into real/fake and clickbait/non-clickbait. In addition to analyzing the news into different categories, it summarizes and includes a dynamic feature that fetches live news.
Psychometric Properties of the Career Futures Inventory (CFI-25) Among Undergraduate Students in Oman

Objectives: The Career Futures Inventory-25 (CFI-25) was tested for validity and psychometric properties in the Omani context. This study is the first to validate the CFI-25 in a Middle Eastern context. Methods: The researchers tested the CFI-25 in a Middle Eastern context using a sample of 412 university students. Validity (content and construct), reliability, Confirmatory Factor Analysis, and Cronbach’s Alpha scores were obtained using SPSS version 27. CFA analysis from a random half-split yielded a CFI-24 Oman (CFIO-24) version and a three-factor structure of the Omani version. The final version of the new CFIO-24 showed good fit indices (CMIN/DF = 2.008, TLI = 0.92, CFI = 0.92, RMSRE = 0.055). Results: The result showed a total Cronbach’s Alpha of ? (? =.79 split half). For the three subscale areas (career adaptability CA, career optimism CO, perceived knowledge PK), reliability scores were CA ? =. 79, CO ? =. 77, and PK ? =. 66. Conclusions: The findings indicate that the CFIO-24 is appropriate for use in the Omani context. Discussion of the results and their implications for practice is provided.
Menstrual Symptoms: Insights from Mobile Menstrual Tracking Applications for English and Chinese Teenagers

Mobile software applications (apps) have transformed how individuals oversee and maintain their own health. One way that girls can monitor their menstrual cycles is through the increasingly widespread use of mobile menstrual tracking apps. This study aimed to examine menstrual symptom tracking for adolescents in English and Chinese apps, exploring menstrual literacy, cross-cultural differences, and framing, or presentation, of symptoms. The mixed-methods content analysis involved 15 popular free menstrual tracking apps in English (n = 8) and Chinese (n = 7), sampled from December 2022 to January 2023. A quantitative analysis of qualitative data was conducted through manual coding of content and automatically analyzing sentiment, or emotional tone, using a computational approach. We found that (1) menstrual literacy on symptom management or treatment was generally insufficient, (2) there were more available emotional than physical symptoms in English than Chinese apps, and (3) symptoms were framed more negatively than positively somewhat more in Chinese than English apps. Our findings emphasize the urgency to provide better evidence-informed communication about symptoms, either presented more positively or neutrally, in menstrual tracking apps for adolescent users. Since adolescence is a critical developmental stage that requires ample support, we recommend that digital menstrual trackers be crucially improved and future research should investigate how they can uniquely shape attitudes and experiences, and subsequent sexual and reproductive health empowerment and bodily autonomy.
Study on Some Species of Trichoderma for the Management of Root Knot Nematode (Meloidogyne spp.) in Tomato

Pot experiment was conducted to find out the competence of some commercial product of Trichoderma spp. on the management of root knot nematode in tomato crop. The experiment was conducted in RCBD having seven treatments of six different Trichoderma spp. including one control in three replications. Each treatment had five pots. Twenty five days old seedling of Shrijana hybrid tomato was transplanted and inoculated with 1500 eggs of Meloidogyne spp. in soil after five days of transplanting of tomato seedlings. The spore suspensions of different Trichoderma spp. adjusted to 1 × 106 spores/ml and also inoculated per pot with 30 ml after one week of nematode inoculation. The same concentration and amount of Trichoderma spores solution was again inoculated after one month from the date of first application. Sixty five days after transplanting, all tomato plants were uprooted and the number of galls in root, galling index and fresh root weight were determined based on a 0-10 scale. The result showed that the treatments varied significantly in root knot index and number of galls per root system and fresh root weight per plant. The lowest gall index was observed in T. harzianum - Nemastin (1.6), followed by T. harzianum (T22) - Rootshield Plus (2.37) and T. viride (Ashtha TV) (3.43). Similarly, lowest numbers of galls (9.13) was observed in T. harzianum - Nemastin than all other treatments. There was no significant difference in fresh root weight per plant of tomato among the treatments except T. harzianum and T. harzianum (T22). Significantly highest suppressive effect on the nematode population was achieved by T. harzianum- Nemastin (Rf 0.45), followed by T. harzianum, (T22) (Rf 0.61), and T. viride, (Ashtha TV) (Rf 1.43). Different isolates of T. harzianum suppressed root knot disease of tomato as compare the isolates of T. viride. Hence, T. harzianum - Nemastin can be applied as a biological control agent to reduce the nematode population.
On drift wave instabilities excited by strong plasma gradients in toroidal plasmas

Motivated by the recent global gyrokinetic simulations of electrostatic drift-wave instabilities in the strong plasma gradient region of toroidal plasmas [Fulton et al., Phys. Plasmas 21, 042110 (2014); Xie et al., Phys. Rev. Lett. 118, 095001 (2017); Xie and Xiao, Phys. Plasmas 22, 090703 (2015)], we have carried out the corresponding analytical and numerical investigations in the case of ion temperature gradient driven modes. It is shown that, for sufficiently strong plasma gradients, the eigenmodes are slab-like and predominantly bounded by the plasma non-uniformities. Our results are qualitatively consistent with the simulation observations.
Description of Adolescent Compliance to the Implementation of 3M During the Covid-19 Pandemic

The Covid-19 Pandemic period is very influential on adolescent compliance, because they are required to apply the 3M health protocol, whether you like it or not, you have to keep doing it because it is to prevent the spread of Covid-19. The aim is to determine community compliance with the application of 3M (Washing hands, Wearing masks, Maintaining distance) during the Covid-19 Pandemic in the East Tapak Hamlet, Kedunggading Village. The design of this research is descriptive with a survey approach. The sample in this study amounted to 68 respondents with a purposive sampling technique. The measuring instrument used is a compliance questionnaire. The results of this study indicate that the average age is 19 years with the youngest 13 years old and the oldest 24 years old, the majority of respondents are female and most of the respondents have high school education. Adolescents' compliance with the application of health protocols is very good because they always wash their hands before and after doing activities, use masks when going out of the house/public places, and always keep a distance of 1 meter from other people. Adolescents need to increase compliance with the application of obedient 3M to be very obedient in order to reduce the transmission rate of Covid-19
New Complexes of Antimony(III) with Tridentate O,E,O-Ligands (E = O, S, Se, Te, NH, NMe) Derived from N-Methyldiethanolamine

We synthesized a series of new antimony(III) compounds by reaction of Sb(OEt)3 with organic ligands of the type E(CH2-CH2-OH)2, with E = NH, NMe, O, S, Se, and Te. The synthesized compounds have the general composition [E(CH2-CH2-O)2]Sb(OEt). For comparison, the compound (O-CH2-CH2-S)Sb(OEt) was prepared. All compounds are characterized using NMR, IR, and Raman spectroscopy. The molecular structures of the products reveal the formation of chelate complexes, wherein the ligand molecules coordinate as tridentate O,E,O-ligands to the antimony atom. Dimer formation in the solid state allows the antimony atoms to reach pentacoordination. Quantum chemical calculations including topological analysis of electron density reveal that there are polar shared bonds between antimony and the oxygen atoms bound to antimony. The interactions between the donor atom E and the Sb atom and the interactions in the dimers can be characterized as Van der Waals interactions. The reactivity of [MeN(CH2-CH2-O)2]Sb(OEt) was investigated as an example. For this purpose, the compound reacted with a range of organic compounds such as carboxylic acids and carboxylic anhydrides and small molecules like CO2 and NH3. This study establishes a new and easy accessible class of antimony(III) compounds, provides new insights into the chemistry of antimony compounds and opens up new opportunities for further research in this field.