Miracle-dz/UniFAR-FTUs huggingface dataset:
The Impact of Resilience in The Psychosocial Support of Internally Displaced Secondary School Students in Cameroon

This study sets out to determine the impact of resilience in the psychosocial support of internally displaced secondary school students in Cameroon. The researcher was motivated by the crises that is affecting two regions in the country which has exposed children to significant risks of diverse forms such as sexual violence, seizure of daily activities, dropping out of school, destruction of infrastructure, association to armed groups, family separation all resulting to extended psychosocial distress and mental disorders especially among some children.The mixed method approach was adopted by the researcher. In the quantitative phase, a sample of 317 participants was drawn from some public schools in the selected regions. The qualitative data was collected from the field with the aid of an Interview guide. Data were analysed used analysing using both descriptive and inferential statistics and the interview guide was analysed using the process of thematic content analysis. The results reveal that the impact of resilience in the psychosocial support of internally displaced secondary students in Cameroon was significant for all the predictive components thus indicating their significance in providing psychosocial assistance among internally displaced secondary school students
Effect of Asymmetric Topography on Rupture Propagation Along Fault Stepovers

Complex fault systems are often located in regions with asymmetric topography on one side of a fault, and these systems are very common in Southern California. Along these fault systems, geometrical complexities such as stepovers can impact fault rupture. Previous rupture dynamic studies have investigated the effect of stepover widths on throughgoing rupture, but these studies didn't examine the influence of topography on the rupture behavior. To investigate the effect of asymmetric topography on rupture dynamics at stepovers, I consider three cases: (a) a flat topography, (b) a positive (mountain), and (c) a negative (basin) topography on only one side of the fault system outside of the stepover. In each case, I use the 3D finite element method to compute the rupture dynamics of these fault systems. The results show a significant time dependent variation of the normal stress for the topography cases as opposed to the flat surface case, which can have an important impact on rupture propagation at the stepover. For a positive topography on the right of the rupture propagation, there is a clamping effect behind the rupture front that prevents the rupture to jump a wider extensional stepover. The opposite is observed for a negative topography or for a positive topography on the left side of the rupture propagation, where the rupture can jump over a wider compressional stepover. These results suggest that topography should be considered in dynamic studies with geometric complexities such as stepovers, and perhaps bends and branched fault systems.
Ants cannot color graphs

Ant colony optimizationwas born in 1991. Fromthat date, ant algorithms have been applied to numerous problems. One of its most famous adaptations was for graph coloring in 1997, resulting in an inspiring publication entitled ”Ants can color graphs” and citedmore than 700 times [3]. In this paper, with a certain sense of humor reflected in its title, it is showed that actually, 20 years later, ants cannot color graphs. Tis fact is explained in the light of two weaknesses of the usual ant methodology when making decisions, namely a cumbersome computation and the joint consideration of conflicting ingredients. A reconciliation of these contradictory statements relies in the enlargement of the ant optimization paradigm.
Theory and design of phase‐inverted balanced coupled‐line DC‐blocker

A planar DC-blocker suitable for differential mode signaling applications is designed and fabricated. The theory of this component is explained in a new form which utilizes the wave scattering transfer matrix. The proposed interpretation of the transfer matrix is most suitable for series (cascade) elements like DC-blockers. In addition to the theoretical enhancement, design of a compressed balanced DC-blocker inserted through a shielded broadside coupled stripline (SBCSL) transmission line is presented. The return loss of better than 10 dB is obtained at 50-ohm differential-mode input ports of the fabricated DC-blocker in the entire frequency range of 5.6-8.4 GHz. The lowest air-gap width in the presented structure is about 10 times bigger than that of a conventional coupled-line structure. So, the structure is much less sensitive to fabrication tolerances. Moreover, the DC-blocker is likely to tolerate higher DC-voltage differences. Also, a demonstration for a millimeter-wave version of this DC-blocker suitable for integrated circuits (ICs) applications is proposed for future development. The final achievement of this paper is design and fabrication of a wideband substrate integrated waveguide (SIW)-mediated balun structure for single-ended measurement of a balanced SBCSL component. The fabricated balun exhibits a nearly perfect coaxial-mode to coupled-stripline differential-mode conversion in the full range of 5-9 GHz. The presented balun is successfully utilized to derive the scattering parameters (S-parameters) of the fabricated balanced SBCSL DC-blocker.
Discussion about the role of teacher authority when making a transition into creative problem-solving in mathematics

When introducing a new kind of teaching activity into the classroom, the teacher cannot foresee whether the students will accept it or not. Even when the students do, there is a risk, that they might be neither able nor willing to adopt all aspects of it. The teacher, then, faces a dilemma between, on the one hand, trying to win the students over to this new activity, and on the other hand, exerting an authority that may overrule the students’ own initiatives and ideas and which includes the potential danger of “losing” the students. In this article, we present a retrospect re-analysis of an older case where the teacher faces such a dilemma. After analysing video recordings and interviews with the teacher through the lenses of authority, we discuss how the teacher handled this dilemma. Here we take a participationist’s perspective and apply theories on authority and positioning. From this perspective, we argue that the teacher’s choice of not clearly exerting his authority leaves the students in doubt about whether they fulfilled the requests. We conclude that in the present case a “too nice” atmosphere in the Norwegian classroom had obstructed the teacher’s desire to implement a profound change. We come to the general conclusion that teachers need to feel comfortable with being assertive and being willing to exercise authority for the implementation of a new teaching activity, including that of creative problem-solving.
OVERCOMING STUDENTS’ PROBLEMS IN PRONOUNCING PAST TENSE VERBS BY MEANS OF YOUTUBE VIDEO

This study was aimed to discover whether teaching by using Youtube videos could overcome students’ problem in pronuncing past tense verbs and to discover the students’ perceptions on the use of Youtube video as teaching media. This study mixed-method study involved the eight grade students of junior high school in Ciamis Year 2017/2018 at which the sample was 27 students of experimental group and 27 for control group. Pre-test and post-test were employed to collect the quantitative data and close-ended questionnaires to collect the qualitative data. The findings indicated that t-observed was 2.344 with degree of freedom 52 and level of significance 0.05 with two tailed test t-table (2.021). It implied that t-observed was higher than t-table (2.344 > 2.021) resulting in rejecting Null hypothesis. It means that there were significant differences on the students’ pronunciation achievement who were taught before using YouTube video and after using YouTube video. Also, students have positive perceptions toward the use of Youtube video as teaching media to overcome their problem in pronouncing past tense verbs such as feeling more intellegent, interested and effective in learning speaking especially pronunciation. This study suggested that Youtube video as media can be applied in other level of students. Keywords: Pronunciation, Past Tense, Youtube Videos
Expression Pattern of Genes Related to Heat Shock Proteins, Apoptosis, Antioxidants and Interleukins in Growing Female Murrah Buffaloes Implanted with Melatonin during Summer Season

Background: Heat stress has deleterious effect in the production trait and biological functions in animals. In tropical continents, melatonin has been shown to retain genomic actions and regulating the expression of several genes necessary for cell survival during stress. So, the study was carried out to observe the effect of melatonin implantation on mRNA gene expression for Heat Shock Proteins, Apoptosis, Antioxidants and Interleukins affected by heat stress during summer season. Methods: Twelve healthy growing female Murrah buffaloes were selected and grouped into control and treatment (melatonin @ 18 mg/50 kg body weight subcutaneously). Peripheral Blood Mononuclear Cells were separated at fortnightly intervals and processed for quantitation of mRNA expression following the double delta Ct method. Result: The fold change in expression pattern of Heat Shock Proteins 60, 70, 90, BAX, Caspase-3, IL-2 and IL-6 were found significantly (P≤0.05) higher in control group. Whereas Bcl-2, Mn SOD and CuZn SOD were found significantly (P≤0.05) higher in treatment group. Melatonin implantation reduces the stress levels by up-regulating the expression of the antioxidant genes, anti-apoptotic genes and lowering the expression of heat shock protein genes during heat stress. Therefore, melatonin can be implanted to growing buffaloes for coping during heat stress.
Multiple Nontrivial Solutions for Neumann Problems Involving the p-Laplacian: a Morse Theoretical Approach

Abstract We consider nonlinear elliptic Neumann problems driven by the p-Laplacian. Using variational techniques together with Morse theory (in particular, critical groups and the Poincaré-Hopf formula), we prove some multiplicity results: either three or four distinct nontrivial solutions are guaranteed, depending on the geometry and smoothness of the nonlinear term.
Simulation the effects of cross-flow injection on the slip velocity and temperature domain of a nanofluid flow inside a microchannel

Purpose In this paper, the forced convection heat transfer of the nanofluid composed of water and AL2O3 nanoparticles is simulated in a two-dimensional horizontal microchannel by injecting the lower wall. The upper wall of the microchannel is 303 K at temperature TH. On the lower wall of the microchannel, there are three holes for flow injection. Other parts of the wall are insulated. In this paper, the effect of parameters such as Reynolds number, slip coefficient and volume fraction of nanoparticles is investigated. Design/methodology/approach The boundary condition of the slip velocity is considered on the upper and lower walls of the microchannel. In this work, the flow of nanofluid in the microchannel is considered to be slow, permanent and Newtonian. In the present study, the effect of injection through the microchannel wall on the slip velocity is examined for the first time. Findings The results are also presented as velocity profiles and Nusselt number diagrams. It was found that the Nusselt number increases with increasing the amount of slip coefficient of velocity and the weight percentage of solid nanoparticles. The rate of this increase is higher in the high values of the Reynolds number. Originality/value A novel paper concerned the simulation of cross-flow injection effects on the slip velocity and temperature domain of a nanofluid flow inside a microchannel.
Optimal Rates for Spectral-regularized Algorithms with Least-Squares Regression over Hilbert Spaces

In this paper, we study regression problems over a separable Hilbert space with the square loss, covering non-parametric regression over a reproducing kernel Hilbert space. We investigate a class of spectral-regularized algorithms, including ridge regression, principal component analysis, and gradient methods. We prove optimal, high-probability convergence results in terms of variants of norms for the studied algorithms, considering a capacity assumption on the hypothesis space and a general source condition on the target function. Consequently, we obtain almost sure convergence results with optimal rates. Our results improve and generalize previous results, filling a theoretical gap for the non-attainable cases.
Gamma-ray burst host galaxies in absorption

Long duration gamma-ray bursts (GRBs) are caused by the deaths of massive stars, and can be seen to extremely large distances. By observing the imprint of foreground material on the featureless GRB spectra, it is possible to study their host galaxies in order to gain an understanding of the conditions at high redshift. In this thesis, spectral data is used to investigate the dust properties of 19 GRB hosts. The results indicate that significant amounts of dust must be formed by grain growth rather than in stars and supernovae. Furthermore, the remarkable host of GRB 080810 is investigated, revealing both inflowing and outflowing gas in unprecedented detail.
Employment Potentials, Innovation, and R & D Expenditure in Nigeria: Evidence from Indigenous Microenterprises

: This study examined employment potentials of indigenous micro-enterprises in Nigeria as an alternative approach to tackling the menace of unemployment in Nigeria. Nigeria is a country with a relatively young population, with a median age of 18 years, which is lower than the African and global averages of 20 and 31 years respectively. A youthful population suggests a strong labor force; with the labor force population of around 70 million in 2020. Providing enough productive jobs for this young demographic (aged 15-29 years) and rising labor force is a challenge; more than 30 million young Nigerians were reported to be unemployed in 2021. As a result of this rapidly growing labor force, job creation is frequently on the top burners of policymakers and governments' development agendas. The dataset employed in the study is a secondary survey data exclusively from the TETFUND Report (2020). In order to achieve our objectives
A modified descriptor for blob detection in nonlinear scale space

In this paper, we present a novel binary descriptor with orientation, which called Intensity-Centroid LDB (IC-LDB). This descriptor resolves the problems that the current non-binary descriptors are too compute-expensive to achieve real-time performance in the nonlinear scale space and that the original Local Difference Binary (LDB) descriptors do not have an orientation component to keep rotation invariant. Experimental results demonstrate that IC-LDB proposed in this paper was faster than previously non-binary descriptors which were used in nonlinear scale space, while performing as well in many situations.
Analysis of seven micronutrients in breast milk of lactating mothers from the Central Region of Ghana using epithermal neutron activation

Background: Breast milk contains various micronutrients which nourishes a baby with nutrition, and therefore the endorsement for exclusive breastfeeding during the first six months after birth. Such micronutrients, if in excess, can have adverse effects on the baby. Objective: The levels of seven micronutrients in breast milk obtained from 27 lactating mothers in the Cape Coast Metropolitan area have been determined using Epithermal Neutron Activation Analysis (ENAA). This technique was used because it is suitable for performing both qualitative and quantitative multi-nutritional analyses on samples, and offers accuracies and sensitivities superior to those attainable by other methods. Materials and Methods: During the analysis, a- 3 mm thick flexible boron was used to cut-off thermal neutrons so as to assess epithermal neutrons, thereby creating an activation energy which measured the levels of micronutrients in the breast milk. The standard reference materials used were the International Atomic Energy Agency (IAEA)-336; IAEA-407, IAEA-350 and National Institute of Standard and Technology (NIST) USA SRM 1577b. The Relative standardization method was used in the quantification of the micronutrients, with an accuracy of about 94.7 %. The micronutrients are Sodium (Na), Magnesium (Mg), Potassium (K), Calcium (Ca), Manganese (Mn), Copper (Cu) and Iodine (I). Results: Except for iodine which had levels below the recommended dietary allowance (RDA), the remaining micronutrients had levels above the upper limit of the RDA, with Manganese being the highest. Conclusion: The levels recorded are directly linked to the food intake of the mothers, and therefore the need for pregnant and lactating mothers to be mindful about what they eat. Children could be exposed to metabolic disorders and diseases as a result of such high levels.
A Climatology of Operational Storm-Based Warnings: A Geospatial Analysis

AbstractThis study provides a quantitative climatological analysis of the fundamental geospatial components of storm-based warnings and offers insight into how the National Weather Service (NWS) uses the current storm-based warning system under the established directives and policies. From October 2007 through May 2016, the NWS issued over 500 000 storm-based warnings and severe weather statements (SVSs), primarily concentrated east of the Rocky Mountains. A geospatial analysis of these warning counts by county warning area (CWA) shows local maxima in the lower Mississippi valley, southern plains, central plains, and the southern Appalachians. Regional uniformity exists in the patterns of average speed and direction provided by the time/motion/location tags, while the mean duration and polygon area varies significantly by CWA and region. These observed consistencies and inconsistencies may be indicative of how local weather forecast office (WFO) policy and end-user needs factor into the warning issuance a.
Wideband filtering Yagi antenna array

ABSTRACT A novel wideband high-gain antenna array with filtering response is presented. The proposed array consists of four Yagi antenna elements and one feeding network, which could realize signal filtering, power splitting as well as impedance transforming characteristics simultaneously. The operating mechanism is analysed and the detailed design procedure is presented. For demonstration, a 2×2 array is designed at the center frequency of 3.0 GHz with the measured fractional bandwidth of 73.3%. Measured in-band maximum gain is 13.2 dB, whereas the out-of-band suppression level is better than 23.2 dB. Compared with the conventional array, the proposed filtering array shows high suppression in the stopband, good selectivity at passband edges and flat antenna gain in the passband. The simulated and measured results provide a good verification for the theoretical concepts.
The turbulent wake of a towed grid in a stratified fluid

In a stable background density gradient, initially turbulent flows eventually evolve into a state dominated by low-Froude-number dynamics and frequently also contain persistent pattern information. Much empirical evidence has been gathered on these latter stages, but less on how they first got that way, and how information on the turbulence generator may potentially be encoded into the flow in a robust and long-lasting fashion. Here an experiment is described that examines the initial stages of evolution in the vertical plane of a turbulent grid-generated wake in a stratified ambient. Refractive-index-matched fluids allow optically based measurement of early ( $Nt<2$ ) stages of the flow, even when there are strong variations in the local density gradient field. Suitably averaged flow measures show the interplay between internal wave motions and Kelvin–Helmholtz-generated vortical modes. The vertical shear is dominant at the wake edge, and the decay of horizontal vorticity is observed to be independent of $\mathit{Fr}$ . Stratified turbulence, originating from Kelvin–Helmholtz instabilities, develops up to non-dimensional time $Nt\approx 10$ , and the scale separation between Ozmidov and Kolmogorov scales is independent of $\mathit{Fr}$ at higher $Nt$ . The detailed measurements in the near wake, with independent variation of both Reynolds and Froude numbers, while limited to one particular case, are sufficient to show that the initial turbulence in a stratified fluid is neither three-dimensional nor universal. The search for appropriately generalizable initial conditions may be more involved than hoped for.
Circulating MicroRNAs as Potential Biomarkers for the Diagnosis of Thyroid Carcinoma：A Systematic Review and Meta-analysis

: Thyroid cancer (TC) ranks as the most prevalent malignant endocrine neoplasm worldwide, holding 9th place in terms of occurrence and ranking 24th for fatality among all diagnosed malignant tumors. Thus, discovering efficient biomarkers for timely identification and diagnosis of TC is pivotal. A meta-analysis was conducted to evaluate the diagnostic capability of circulating microRNAs (miRNAs) in detecting TC, registered under INPLASY202360048 on the INPLASY website. A systematic search of four databases (PubMed, Embase, Web of Science, and Cochrane Library) was performed to identify relevant articles published from inception until December 22, 2022. Stata 14.0 software was used to calculate the pooled sensitivity, speciﬁcity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), diagnostic ratio (DOR), and area under the summary receiver operating characteristic (ROC) curve to assess the accuracy of miRNAs in the diagnosis of TC. Study heterogeneity was quantitatively evaluated using the Cochran-Q test and I2 statistic. Given the significant variability among studies, we opted for a random-effect model. Subgroup analysis and regression analysis were conducted in an effort to identify any possible factors contributing to heterogeneity
Simplified Easy-Accessible Smartphone-Based Photogrammetry for 3-Dimensional Anatomy Presentation Exemplified With a Photorealistic Cadaver-Based Model of the Intracranial and Extracranial Course of the Facial Nerve

BACKGROUND AND OBJECTIVES: Smartphone-based photogrammetry (SMPhP) was recently presented as a practical and simple algorithm to create photorealistic 3-dimensional (3D) models that benefit from volumetric presentation of real anatomic dissections. Subsequently, there is a need to adapt the techniques for realistic depiction of layered anatomic structures, such as the course of cranial nerves and deep intracranial structures; the feasibility must be tested empirically. This study sought to adapt and test the technique for visualization of the combined intracranial and extracranial course of the facial nerve's complex anatomy and analyze feasibility and limitations. METHODS: We dissected 1 latex-injected cadaver head to depict the facial nerve from the meatal to the extracranial portion. A smartphone camera alone was used to photograph the specimen, and dynamic lighting was applied to improve presentation of deep anatomic structures. Three-dimensional models were created with a cloud-based photogrammetry application. RESULTS: Four 3D models were generated. Two models showed the extracranial portions of the facial nerve before and after removal of the parotid gland; 1 model showed the facial nerve in the fallopian canal after mastoidectomy, and 1 model showed the intratemporal segments. Relevant anatomic structures were annotated through a web-viewer platform. The photographic quality of the 3D models provided sufficient resolution for imaging of the extracranial and mastoid portions of the facial nerve, whereas imaging of the meatal segment only lacked sufficient precision and resolution. CONCLUSION: A simple and accessible SMPhP algorithm allows 3D visualization of complex intracranial and extracranial neuroanatomy with sufficient detail to realistically depict superficial and deeper anatomic structures.