Miracle-dz/UniFAR-FTUs huggingface dataset:
Design of Self-Resonant Spiral Coils for Mid-Range, High-frequency Wireless Power Transfer Systems

This paper presents a design of self-resonant coils for mid-range, high-frequency (HF) wireless power transfer (WPT) systems. In HF, WPT systems, a critical coupling coefficient between two resonators determines the power transmission distance. However, because the critical coupling coefficient is inversely proportional to the inductance value of the coupling coils, the longer transmission distance in the WPT systems requires a high inductance value, which causes two major challenges: (1) the small capacitance (Cs) in the compensation network at the fixed frequency, and (2) the low parasitic-resonant frequency due to the parasitic capacitance (Cp) in each coupling coil. To overcome these issues, first, we designed and fabricated the optimized self-resonant coils to achieve a longer transmission distance without any external capacitors at 10’s of MHz frequencies. The self-resonant coil consists of two identical spiral coils, and the distance between them creates the series capacitance $(C_{s})$ without any additional components. The proposed self-resonance coil design addresses the capacitor breakdown issue and allows us to tune the coil easily. The Cs value was selected using the coil’s equivalent model such $R, L$, and Cp for the resonance in the WPT condition. In addition, the proposed self-resonant coil design provides the alternative design to maintain the zero-phase angle (ZPA) for the specific over-coupled condition by adjusting the Cs value. We designed the three types of self-resonant coils with different critical coupling coefficients in 160 cm diameter and 13.56 MHz. The conversion efficiencies of the three types of coils were around 96% in these systems under the 180 W AC-to-AC WPT condition. The designed self-resonant coil successfully operated without any additional capacitor by tuning the Cs value considering Cp value and increasing the transmission distance while keeping the inductance value high.
Low-Complexity Speech Spoofing Detection using Instantaneous Spectral Features

Over the last decade, various detection mechanisms for spoofed speech have been proposed. Thus far the development focus has been on detection accuracy, largely ignoring secondary goals such as computational complexity or storage effort. In this work, we use empirical mode decomposition to compute intrinsic mode functions which are then demodulated to obtain features consisting of short-time statistics of instantaneous amplitude and instantaneous frequency. These features are then used with a simple k-nearest neighbours classifier. We further s how that voiced segments from short speech signals can be used in the feature extraction resulting in a spoofing detection competitive with top-performing systems while having up to 103× less computation.
Multiple Class Breast Cancer Detection Method Based on Deep Learning and MIRRCNN Model

The DCNN is a powerful deep learning system. Breast cancer classification, segmentation, and detection have previously been shown to be improved by DCNNs in a range of medical imaging modalities. As a global disease, breast cancer is one of the most frequent and most destructive. In this paper, the MIRRCNN model was employed to classify breast cancer based on recurrent residual convolutional neural networks (RNNs). Inception (Inception-v4), ResNet, and the Recurrent Convolutional Neural Network are only a few of the robust models in the DCNN family. Compared to Inception, Residual, and RCNN networks, the MIRRCNN is superior in object recognition. A publicly accessible database is utilised to classify breast cancer using the MIRRCNN method. Researchers compared their findings in terms of picture, patches, and patient-level categorization to previous machine learning and data mining methodologies. This model surpasses previous methods in terms of sensitivity, AUC, the ROC chart, and overall accuracy for both datasets.
Applications of dependence concepts in insurance and finance

The first part of this thesis is devoted to the illustration of the concept of a dependence structure and to the issue of the comparison of such structures. The important message is that, contrary to some of the most used measures of dependence like linear correlation, the identification and the analysis of a dependence structure requires mathematical instruments beyond simple numerical quantities. In particular, it turns out that copulae can be interpreted as dependence structures and that stochastic orders allow for the definition of their riskiness. The methodology presented applies to the solution of different problems ranging from risk theory to risk management and extreme value theory. In Chapter 3 results concerning the influence the dependence has on the ruin probability of a risk process where the single claims are sums of dependent random variables are obtained. Chapter 4 is the application of the theory of copulae to the problem of bounding the Value-at-Risk of a functional of dependent risks. Finally, Chapter 5 proposes a bivariate analogue in terms of copulae of the Pickands–Balkema–de Haan Theorem of extreme value theory for conditional bivariate extremes whose dependence structure is archimedean.
Self-organising Dissipative Polymer Structures

In frameworks of the scaling theory of phase transitions and critical phenomena the quantitative dependence of macroscopic properties on nanostructural parameters in a polymeric material is revealed. The draw ratios at neck and at break are referred to the macroscopic properties. The structure is characterized by an average thickness of amorphous layers in isotropic melt-crystallized linear high density polyethylene which is chosen as an example. The square of the neck draw ratio is equal to the product of the square of the draw ratio at break and the chain ends collision probability. This probability in its turn is proportional to the average thickness of amorphous layers in the isotropic material. The neck draw ratio is a parameter of order. Polymers with flexible chains are solutions in solid state as well as in melt, the interacting ends of a marked chain serving as a solvent. At critical polymerization degree all the phases are identical. This research is an important contribution to the molecular theory of polymer liquids. It has been found that the melt viscosity vs the molecular weight of linear flexible-chain polymer follows the power law with the 3.4-exponent within the reptation model near the critical point. This is different from the value 3 expected for the melt of ring macromolecules. The rotation vibration precession motion of chain ends about the polymer melt flow direction were taken into account to find better agreement with the experiment.
On ramped vanes to control normal shock boundary layer interactions

ABSTRACT A novel vortex generator design positioned upstream of a normal shock followed by a subsequent diffuser was investigated using large eddy simulations. In particular, “ramped-vane” flow control devices with three different heights relative to the incoming boundary layer thickness (0.34δ, 0.52δ and 0·75δ) were placed in a supersonic boundary layer with a freestream Mach number of 1.3 and a Reynolds number of 2400 based on the momentum thickness. This is the first numerical study to investigate the size effect of the ramped-vane for flow control device in terms of shape factor, flow separation and flow unsteadiness. The results showed that these devices generated strong streamwise vortices that entrained high-momentum fluid to the near-wall region and increased turbulent mixing. The devices also decreased shock-induced flow separation, which resulted in a higher downstream skin friction in the diffuser. In general, the largest ramped-vane (0.75δ) produced the largest reductions in flow separation, shape factor and overall unsteadiness. These results and a careful review of the literature study also determined the quantitative correlation of optimum VG height with Mach number, whereby h/δ~1 is often optimum for incompressible flows while higher Mach numbers lead to small optimum heights, tending towards h/δ~0.45 at M=2.5.
An Illustration of a Longitudinal Cross-Lagged Design for Larger Structural Equation Models

A model of HIV behavior risk is tested, using a fully cross-lagged, longitudinal design, to illustrate the analysis of larger (i.e., 3 or more variables across 3 or more time points) structural equation models. The constructs in this integrated model were (a) Perceived Risk for AIDS, (b) Decisional Balance (relative weighing of benefits and barriers of condom use), (c) Self-Efficacy for Condom Use, (d) Lifetime Number of Sex Partners, and (d) Behavior Risk. Data were analyzed from 527 women living in a New England community who completed lifestyle surveys at 3 time points. Results of the cross-lagged analysis indicated a reciprocal, positive relation between Self-Efficacy for Condom Use and Decisional Balance. Behavior Risk for HIV was associated with higher Perceived Risk, lower Self-Efficacy for Condom Use, and lower Decisional Balance. The model showed excellent fit to the data and explained substantial variance in Time 3 measures of model constructs. Interpretations, as well as strengths and limitations of the analysis, are presented.
Anatomical Variants of the Posterior Part of the Circle of Willis in Patients with Cerebrovascular Diseases

Introduction: The current literature proves that the frequency of anatomical variants of circle of Willis (CoW) has not yet been sufficiently evaluated both in the Romanian population and internationally, and in the North East region of Romania there is no evidence of such research so far.The aim of this study is to identify the frequency and types of anatomical variants of the constituent arteries of the posterior part of the Cov in patients with cerebrovascular diseases diagnosed within the main Neurology hospital in the Northeastern region of Romania, based on macroscopic analysis of arterial specimens obtained at autopsy and the results with data from updated literature. Material and Methods: A Our research represents a descriptive observational study, conducted retrospectively on 96 patients with cerebrovascular diseases who died over a period of 30 months and underwent an anatomo-clinical autopsy. We analysed the general macroscopic aspects of all anatomical variants of the constituent arteries of the posterior part of the CoW, comparing these to the opposite arteries. Result: Out of the total of 96 available human brains, 28 cases (29.17%) presented anatomical variants of CoW, among which 11 cases (39.28%) presented at least one anatomical variant of the constitutive arteries of its posterior part. The average age of these patients was 59.18 years. 36.36% cases had a single anatomical variant, 54.54% cases had two anatomical variants, and 9.09% associated an anatomical variant of the posterior part of CoW and one of the vertebral arteries. Anatomical variations of the arteries of the posterior part of the CoW were observed in 14 arteries (31.81%) of all the 44 available, and consisted in unilateral or bilateral hypoplasia (20.45%) or absence (15.90%), located either on the right or on the left, and partial fetal posterior cerebral artery (2.27%) located on the left side. We identified seven morphological patterns of the posterior part of CoW in the conditions in which its anterior part does not present any anatomical variants. Conclusion: The data obtained in the present research allow us to affirm that circle of Willis represents an anatomical structure with a great morphological diversity of its posterior part. This study contributes to the knowledge of this topic in Romania and allows comparisons with data obtained both in the country and abroad.
Sowtali et al., (2022) International Journal of Care Scholars, 5(2), 126-132

Urolithiasis or kidney stone has strong association with lifestyle. The pattern of recurrent episodes reported is alarming and if left untreated will lead to serious conditions such as cancer or ablative surgical intervention. Therefore, this scoping review was performed to provide an overview on knowledge, awareness and practice (KAP) of dietary management among patients with urolithiasis. Published studies within 2010 until 2020 on KAP among urolithiasis patients globally and Malaysia were searched through five databases including ProQuest Health and Medical Complete, Wiley Online Library, EBSCO Host, Science Direct and Scopus. The quality appraisal was performed using Freestyle Critical Appraisal. Two of the authors involved in screening the relevant literature while the supervisor involved in peer checking the appraisal performed. A total of eight publications; five original studies and three review papers were obtained but none was from Malaysia. Only five were reviewed systematically on the basis of its completeness for quantitative synthesis on design, population, methodology and instrumentation. The scope of interest was awareness of urolithiasis, knowledge on risk factors, sign and symptoms, treatment and preventive measure, as well as the relationship between urolithiasis and socio-demographic background. The findings highlighted an association between socio-demographic background such as age, gender, education level, income status, literacy level towards KAP among urolithiasis patients on dietary management. Lifestyle pattern such as food intake and weight management were crucial to prevent recurrent episode Proper dietary management was an early intervention to prevent recurrent episodes of urolithiasis. Health education efforts may be helpful to increase awareness and knowledge among patients and this need to be performed by multidisciplinary effort.
Heel riser height and slope gradient influence the kinematics and kinetics of ski mountaineering—A laboratory study

In ski mountaineering, equipment and its interaction with the exercising human plays an important role. The binding, as the crucial connection between boot and ski, must ensure safe fixation during downhill skiing and a free moving heel when walking uphill. Uphill, the binding offers the possibility to adopt the height of the heel (riser height) to personal preferences and the steepness of the ascent. This possible adjustment and its influence on various biomechanical parameters are the focus of this work. For this study, 19 male leisure ski mountaineers were tested on a treadmill, ascending at a fixed submaximal speed (3.9 ± 0.4 km·h−1) at 8, 16, and 24% gradient and with three heel riser heights, low (0 cm), medium (3.0 cm) and high (5.3 cm). The applied biomechanical measurement systems included a 3D motion capture system in sagittal plane, pressure insoles, a with strain gauges instrumented pole, spirometry and a comfort scale. Step length and step frequency were influenced by the riser height and the gradient (p ≤ 0.001). The high riser height decreased the step length by 5% compared to the low riser height over all tested gradients, while steps were 9.2% longer at the 24% gradient compared to the 8% gradient over all three riser heights. The high riser height revealed a force impulse of the pole 13% lower than using the low riser height (p < 0.001). Additionally, the high riser height reduced the range of motion of the knee joint and the ankle joint compared to the low riser height (p < 0.001). Therefore, advantageous settings can be derived, with the low riser height creating proper range of motion for ankle, knee and hip joint and higher propulsion via the pole at 8%, while higher riser heights like the medium setting do so at steeper gradients. These findings are in line with the conducted comfort scale. We would not recommend the highest riser height for the analyzed gradients in this study, but it might be an appropriate choice for higher gradients.
IMPORTS, EXPORTS, AND EARNINGS INEQUALITY: MEASURES OF EXPOSURE AND ESTIMATES OF INCIDENCE

The earnings of individuals depend on the demand for the factor services they supply. International trade may therefore affect earnings inequality because either (i) foreign consumers and firms demand domestic factor services in different proportions than domestic consumers and firms do, an export channel; or (ii) domestic consumers and firms change their demand for domestic factor services in response to the availability of foreign goods, an import channel. Building on this idea, we develop new measures of export and import exposure at the individual level and provide estimates of their incidence across the earnings distribution. The key input fed into our empirical analysis is a unique administrative data set from Ecuador that merges firm-to-firm transaction data, employer-employee matched data, owner-firm matched data, and firm-level customs transaction records. We find that export exposure is pro-middle class, import exposure is pro-rich, and in terms of overall incidence, the import channel is the dominant force. As a result, earnings inequality in Ecuador is higher than it would be in the absence of trade. JEL Codes: F10, F14, F16.
“Oral health as an important milieu for social and mental health”: Perspectives of adolescents emerging from a qualitative study

Background Recent evidence showed that the prevalence of oral diseases is still high among adolescents in many developing countries, including Nigeria. It therefore has becomes pertinent to focus on appropriate oral health interventions to promote oral health among them. This necessitates investigating the perspectives of adolescents, who are the major stakeholders, on the importance of oral health as baseline data needed in planning appropriate primary interventions. Aim The aim of the study was to explore the perspectives of adolescents on the importance of oral health. Methods An explorative qualitative study was conducted among adolescents attending senior secondary school I (grade 10) in the metropolis of Ibadan, Nigeria. A total of 12 focus group discussions were conducted among 120 adolescents aged 14 to 19 years. The discussions were transcribed verbatim, and triangulation and organization, as well as thematic analysis, of data were carried out. Results Some adolescents had positive perceptions of oral health and valued it as highly important, although some had contrary views and believed oral health was unimportant. Oral health is described as being integral to general health, is associated with eating and communication, is a means of survival and confidence building, and is a prelude to attract the opposite gender. Adolescents perceived the need for oral health education and dental treatment. Conclusion Adolescents have mixed perspectives on the importance of oral health; while some valued it as highly important, others believed it was of no significance. Those who valued oral health as important described it as a milieu for general health, human survival, and social and mental health and thus requested for oral health promotion in schools.
The Influence of Architects’ Sensing-Intuitive Personality Characteristics on Design Morphology in Selected Nigerian Universities

Little or no record of the personality characteristics of the architectural design studio teachers and students has been made in schools, in the world over. This study employed a survey research designs in the architectural design studios of four (4) selected universities in South-West Nigeria. Five hundred (500) architectural students population study, out of which a sample of 498 was drawn while seventy five (75) represent teachers population study, out of which a sample of 49 was drawn, (N=49). Structured questionnaire patterned after Myers-Briggs (MBTI Indicator, 1997-2009) was used. This paper examined the influence of intuitive-sensing personality characteristics of design studio teachers’ and students in the determination of architectural forms and structures. The key findings yielded seven (7) dimensions pedagogic perceptive indices to Life in Architectural Design Studio (iN-intuitive, S-sensing); iN-S1, iN-S2, iN-S3, iN-S4, iN-S5, iN-S6, and iN-S7 across the spectrum. The most significant index in the pedagogic spectrum was iN-S5 across the selected schools (iN= 15.8s, 4.0t; S= 63.4s, 85.7t) with higher sensing but skewed intuition indices for students and teachers respectively. It recommended a controlled engagement of intuition and sensing personality characteristics in fostering design products. This was to enable proficiency and competency rating of teachers, students and professionals in practice.
Micropropagation, encapsulation, physiological, and genetic homogeneity assessment in Casuarina equisetifolia

Casuarina equisetifolia is an important tree of the forest, cultivated in tropical and subtropical regions, providing fuelwood, land reclamation, dune stabilization, paper production, and nitrogen fixation. We have developed a systematic in vitro propagation protocol in C. equisetifolia using nodal segments (NS). Murashige and Skoog (MS) medium augmented with BA (5.0 μM) and NAA (0.5 μM) gave rise to a maximum of 32.00 ± 0.31 shoots per explant (S/E) with shoot length (SL) of 3.94 ± 0.02 cm, and a maximum of 70% regeneration potential (RP) was recorded after 8 weeks of post inoculation. For root induction, in vitro derived shoots were transferred to the nutrient medium consisting of a half-strength (½) MS medium augmented with 2.5 μM NAA, which produced a maximum of 12.68 ± 0.33 roots/shoot (R/S) with 3.04 ± 0.50 cm root length (RL) in 60% of culture after 6 weeks. Micropropagated plants with healthy shoots and roots were successfully acclimatized in vermicompost + garden soil + sand (1:2:1) and a maximum survival percentage of 95.1% was recorded. NS was taken from a 6-weeks-old in vitro derived plant of C. equisetifolia for synthetic seed production, and it was reported that CaCl2 · 2H2O (100 mM) + Na2-alginate (4%) resulted in clear and uniform beads. Furthermore, the maximum conversion of synthetic seeds into plantlets occurred over a period of 4 weeks of storage at 4°C. Scanning Electron Microscopy (SEM) revealed the formation of direct shoot buds without any intermediate callus formation. In addition, the chlorophyll and carotenoid contents of the direct regenerated and mother plant were compared. Similarly, RAPD and ISSR primers were used for genetic homogeneity assessment of the direct regenerated plants, where a total of 18 and 19, respectively, clear and reproducible bands with 100% monomorphism were recorded. The developed micropropagation protocol can certainly be used for large-scale multiplication and germplasm preservation of C. equisetifolia. It will also help in meeting the growing demands of C. equisetifolia in the forest industry.