Miracle-dz/UniFAR-FTUs huggingface dataset:
Students and Teachers’ Perceptions on Vocational Skills in Promoting Technical Innovation: The Case of Veta Kihonda in Morogoro Municipality

The study focused on the students' and teachers' perceptions of vocational skills in promoting technical innovation; a case of Morogoro Municipality specifically at VETA Kihonda. The study employed a descriptive research design based on a mixed approach i.e., both qualitative and quantitative data were used. To select respondents, both simple random and purposive sampling techniques were used. The sample size of 105 was calculated by using Yamane's [1] formula. Therefore, 90 finalist VETA students were randomly selected while 15 teachers were purposively selected and used in this study. Both primary and secondary data sources were used in the study. Moreover, qualitative data were analyzed thematically while quantitative data were descriptively analyzed with the support of SPSS version 25 to generate frequencies and percentages. The study revealed that the high cost of raw materials, lack of access to finance, lack of qualified personnel, lack of motivation, and environmental factors were perceived by respondents to be the challenge for VETA in promoting technological innovation. Based on the study findings, researchers recommended that the modernization of workshops/training facilities periodically and the replacement of older training equipment and tools with new ones are required.
Urban growth nexus to land surface temperature in Ghana

Abstract Urbanisation in Ghana has been associated with significant effects on the land surface temperature which has its impacts on the natural environment. Conventional literature exhibits that land surface temperature associated with urbanisation have concentrated in the developed world leaving the African terrain unattended to. Hence, its knowledge and implications in Africa and for that matter Ghana is deficient. This study is two-pronged a) examines the relationship between land surface temperature coupled with its spatial patterns (b) examines the surface urban heat island and urban-rural gradient in Greater Accra region of Ghana. Landsat images for 1991, 2002, 2012 and 2020 were used where demarcations for spatial integrity were done. The use of machine learning algorithms were adopted in the land use classification. It was observed that Accra would experience high impervious surface mostly due to rural–urban migration purposely to seek for employment. It was concluded that in order to achieve the Sustainable Development Goals (especially goals 3,6,11 and 13) more efforts should be made to improve the conditions in the rural areas in order to curtail the migration drive which does not only put pressure on the social amenities in the urban areas but also exacerbate in the land surface temperature situation.
Killing-Yano Tensors, Rank-2 Killing Tensors, and Conserved Quantities in Higher Dimensions

From the metric and one Killing-Yano tensor of rank D-2 in any D-dimensional spacetime with such a principal Killing-Yano tensor, we show how to generate k=[(D+1)/2] Killing-Yano tensors, of rank D-2j for all j=0,. ,k-1, and k rank-2 Killing tensors, giving k constants of geodesic motion that are in involution. For the example of the Kerr-NUT-AdS spacetime (hep-th/0604125) with its principal Killing-Yano tensor (gr-qc/0610144), these constants and the constants from the k Killing vectors give D independent constants in involution, making the geodesic motion completely integrable (hep-th/0611083). The constants of motion are also related to the constants recently obtained in the separation of the Hamilton-Jacobi and Klein-Gordon equations (hep-th/0611245).
Asteroseismology of the Double-mode High-amplitude δ Scuti Star VX Hydrae

Bi-site time-series photometric and high-resolution spectroscopic observations were made for the double-mode high-amplitude δ Scuti star VX Hya. The fundamental frequency f0 = 4.4763 c days−1, the first overtone f1 = 5.7897 c days−1, and 23 harmonics and linear combinations of f0 and f1 are detected by pulsation analysis. From the spectroscopic data, we get [Fe/H] = −0.2 ± 0.1 dex. The period change rate of the fundamental mode is obtained by using the Fourier-phase diagram method, which gives the value of . With these results from the observations, we perform theoretical explorations with the stellar evolution code MESA, and constrain the models by fitting f0, f1, and (1/P0)(dP0/dt) within 3σ deviations. The results show that the period change of VX Hya could be ascribed to the evolutionary effect. The stellar parameters of VX Hya could be derived as: the mass 2.385 ± 0.025 M⊙, the luminosity log(L/L⊙) = 1.93 ± 0.02, and the age (4.43 ± 0.13) × 108 years. VX Hya is found to locate at the post-main-sequence stage with a helium core and a hydrogen-burning shell on the H–R diagram.
Molecular Epidemiological Evidence Implicates Cattle as a Primary Reservoir of Campylobacter jejuni Infecting People via Contaminated Chickens

The study aimed to determine the relative contribution of cattle to the burden of illness in a model agroecosystem with high rates of human campylobacteriosis (≥ 115 cases/100 K), and high densities of cattle, including large numbers of cattle housed in confined feeding operations (i.e., in southwestern Alberta, Canada). To accomplish this, a large-scale molecular epidemiological analysis of Campylobacter jejuni circulating within the study location was completed. In excess of 8000 isolates of C. jejuni from people (n = 2548 isolates), chickens (n = 1849 isolates), cattle (n = 2921 isolates), and water (n = 771 isolates) were subtyped. In contrast to previous studies, the source attribution estimates of clinical cases attributable to cattle vastly exceeded those attributed to chicken (i.e., three- to six-fold). Moreover, cattle were often colonized by C. jejuni (51%) and shed the bacterium in their feces. A large proportion of study isolates were found in subtypes primarily associated with cattle (46%), including subtypes infecting people and those associated with chickens (19%). The implication of cattle as a primary amplifying reservoir of C. jejuni subtypes in circulation in the study location is supported by the strong cattle association with subtypes that were found in chickens and in people, a lack of evidence indicating the foodborne transmission of C. jejuni from beef and dairy, and the large number of cattle and the substantial quantities of untreated manure containing C. jejuni cells. Importantly, the evidence implicated cattle as a source of C. jejuni infecting people through a transmission pathway from cattle to people via the consumption of chicken. This has implications for reducing the burden of campylobacteriosis in the study location and elsewhere.
Guggulsterone Induces Apoptosis in Multiple Myeloma Cells by Targeting High Mobility Group Box 1 via Janus Activated Kinase/Signal Transducer and Activator of Transcription Pathway

Simple Summary Multiple myeloma (MM) is a cancer of white blood cells known as plasma cells. It is hard to treat cancer, thus requires new treatments. Herein, a plant extracted compound, guggulsterone (GS), has been investigated for its anticancer activity in MM cells. The results from this study revealed that GS could be used for the effective treatment of MM due to its ability to cause cell death in MM cells. It exhibits anticancer activity itself and also increases the effectiveness of other drugs when combined. Therefore, it could be further investigated for its possible utilization in clinics to treat MM patients. Abstract Multiple myeloma (MM) is a hematological disorder characterized by the abnormal expansion of plasma cells in the bone marrow. Despite great advances over the past three decades in discovering the efficacious therapies for MM, the disease remains incurable for most patients owing to emergence of drug-resistant cancerous cells. Guggulsterone (GS), a phytosteroid, extracted from the gum resin of guggul plant, has displayed various anticancer activities in vitro and in vivo; however, the molecular mechanisms of its anticancer activity have not been evaluated in MM cells. Therefore, in this study, we investigated the anticancer activity of GS in various MM cell lines (U266, MM.1S, and RPMI 8226) and the mechanisms involved. GS treatment of MM cells caused inhibition of cell proliferation and induction of apoptotic cell death as indicated by increased Bax protein expression, activation of caspases, and cleavage of poly (ADP-ribose) polymerase. This was associated with the downregulation of various proliferative and antiapoptotic gene products, including cyclin D, Bcl-2, Bcl-xL, and X-linked inhibitor of apoptosis protein. GS also suppressed the constitutive and interleukin 6-induced activation of STAT3. Interestingly, the inhibition of Janus activated kinase or STAT3 activity by the specific inhibitors or by siRNA knockdown of STAT3 resulted in the downregulation of HMGB1, suggesting an association between GS, STAT3, and HMGB1. Finally, GS potentiated the anticancer effects of bortezomib (BTZ) in MM cells. Herein, we demonstrated that GS could be a potential therapeutic agent for the treatment of MM, possibly alone or in combination with BTZ.
Satellite Measurements of Surface Albedo and Temperatures in Semi-Desert

Abstract Measurements of surface parameters in an arid steppe (the semi-desert of the northern Sinai) were made from the NOAA-6 satellite to assess the effects of the vegetation recovery in a fenced-off area. The radiances measured in the solar wavelengths over the vegetated area were about 25% lower than those measured over the surrounding bare sandy soil (where the surface albedo measured from Landsat is about 0.42). This implies a reduction in the albedo by the vegetation also by about 25% if both surfaces are regarded as Lambertian, but by as much as 42% if the vegetated area is modeled as a plane of soil with vertically protruding plants. The radiation temperatures in the 11 μm channel at ∼0730 LST measured over the vegetated area were by as much as 2.5 K higher than over the surrounding sands.
Cosmogenic photon and neutrino fluxes in the Auger era

The interaction of ultra-high-energy cosmic rays (UHECRs) with pervasive photon fields generates associated cosmogenic fluxes of neutrinos and photons due to photohadronic and photonuclear processes taking place in the intergalactic medium. We perform a fit of the UHECR spectrum and composition measured by the Pierre Auger Observatory for four source emissivity scenarios: power-law redshift dependence with one free parameter, active galactic nuclei, gamma-ray bursts, and star formation history. We show that negative source emissivity evolution is favoured if we treat the source evolution as a free parameter. In all cases, the best fit is obtained for relatively hard spectral indices and low maximal rigidities, for compositions at injection dominated by intermediate nuclei (nitrogen and silicon groups). In light of these results, we calculate the associated fluxes of neutrinos and photons. Finally, we discuss the prospects for the future generation of high-energy neutrino and gamma-ray observatories to constrain the sources of UHECRs.
The μ+μ− collider to sensitivity estimates on the magnetic and electric dipole moments of the tau-lepton

Using the effective Lagrangian formalism, the anomalous magnetic and electric dipole moments of the tau-lepton in the [Formula: see text] process are investigated with the future muon collider where [Formula: see text], 3 and 6 TeV. In addition, the bounds at the 95% confidence level on the dipole moments of the tau-lepton are estimated using different integrated luminosities. It is shown that the [Formula: see text] process leads to a remarkable improvement in the existing experimental bounds on the anomalous magnetic and electric dipole moments of the tau-lepton [Formula: see text] and [Formula: see text] at 95% C.L. for [Formula: see text], [Formula: see text] and [Formula: see text].
On the stability of the dnoidal waves for the Schr\"odinger-KdV system

We study the periodic Schr\"odinger-Korteweg de Vries system. We describe the two-parametetric family of $2T$ periodic traveling waves of dnoidal type. The main objective of the paper is to establish their spectral stability with respect to co-periodic perturbations. In the limit $T\to \infty$, we recover the results of Albert-Angulo, for the stability of the soliton solutions of this system on the real line.
Antiferromagnetic and 
d
-wave pairing correlations in the strongly interacting two-dimensional Hubbard model from the functional renormalization group

Using the dynamical mean-field theory (DMFT) as a `booster-rocket', the functional renormalization group (fRG) can be upgraded from a weak-coupling method to a powerful computation tool for strongly interacting fermion systems. The strong local correlations are treated non-perturbatively by the DMFT, while the fRG flow can be formulated such that it is driven exclusively by non-local correlations, which are more amenable to approximations. We show that the full frequency dependence of the two-particle vertex needs to be taken into account in this approach, and demonstrate that this is actually possible -- in spite of the singular frequency dependence of the vertex at strong coupling. We are thus able to present the first results obtained from the DMFT-boosted fRG for the two-dimensional Hubbard model in the strongly interacting regime. We find strong antiferromagnetic correlations from half-filling to 18 percent hole-doping, and, at the lowest temperature we can access, a sizable $d$-wave pairing interaction driven by magnetic correlations at the edge of the antiferromagnetic regime.
Automatic identification of noises for an optimal filtering

The author proposes a method which allows detection of the additive, multiplicative, or impulsive nature of noise by decision criteria from the degraded image. This method is based on the analysis of local variations of the average and of the standard deviation estimated on the homogeneous regions of the observed image. In the case where additive or multiplicative noise is detected, its statistical parameters are estimated from the local variations determined in the identification phase. This makes it possible to apply the best adapted filtering algorithms to the image to be processed. <<ETX>>
HUMOUR STYLES AS MEDIATORS BETWEEN SELF-ESTEEM AND LONELINESS

This study investigated whether the different humour styles mediate the relationship between self-esteem and loneliness. A sample of 689 undergraduate students completed self-report measures of self-esteem, humour styles and loneliness. Previous research (Cacioppo Patrick, 2009) indicates an inverse relationship between self-esteem and loneliness and factors within the social environment have been argued to play a role in this relationship. Humour styles used in social interactions have been found to be associated with different levels of self-esteem and loneliness. Significant specific indirect mediation effects were found for all four humour styles. The interpersonally beneficial humour styles contributed to lower perceived loneliness, whereas use of the interpersonally detrimental humour styles resulted in higher experiences of loneliness. The results are discussed in terms of the individual and social consequences of the humour styles.
Effects of Gas on Formation and Evolution of Stellar Bars and Nuclear Rings in Disk Galaxies

We run self-consistent simulations of Milky Way-sized, isolated disk galaxies to study the formation and evolution of a stellar bar as well as a nuclear ring in the presence of gas. We consider two sets of models with cold or warm disks that differ in the radial velocity dispersions, and vary the gas fraction by fixing the total disk mass. A bar forms earlier and more strongly in the cold disks with larger , while gas progressively delays the bar formation in the warm disks. The bar formation enhances a central mass concentration, which in turn causes the bar to decay temporarily, after which it regrows in size and strength, eventually becoming stronger in models with smaller . Although all bars rotate fast in the beginning, they rapidly turn to slow rotators. In our models, only the gas-free, warm disk undergoes rapid buckling instability, while other disks thicken more gradually via vertical heating. The gas driven inward by the bar potential readily forms a star-forming nuclear ring. The ring is very small when it first forms and grows in size over time. The ring star formation rate is episodic and bursty due to feedback, and is well correlated with the mass inflow rate to the ring. Some expanding shells produced by star formation feedback are sheared out in the bar regions and collide with dust lanes to appear as filamentary interbar spurs. The bars and nuclear rings formed in our simulations have properties similar to those in the Milky Way.
On the role of Penning ionization in photoassociation spectroscopy

We study the role of Penning ionization on the photoassociation spectra of He(23S1)–He(23S1). The experimental set-up is discussed and experimental results for different intensities of the probe laser are shown. For modelling the experimental results we consider coupled-channel calculations of the crossing of the ground state with the excited state at the Condon point. The coupled-channel calculations are first applied to model systems, where we consider two coupled channels without ionization, two coupled channels with ionization, and three coupled channels, for which only one of the excited states is ionizing. Finally, coupled-channel calculations are applied to photoassociation of He(23S1)–He(23S1) and good agreement is obtained between the model and the experimental results.
Exploring Spin-3/2 Dark Matter with Effective Higgs Couplings

We study an economical model of weakly interacting massive particle dark matter (DM) which has spin $3/2$ and interacts with the 125 GeV Higgs boson via effective scalar and pseudoscalar operators. We apply constraints on the model from the relic density data, LHC measurements of the Higgs boson, and direct and indirect searches for DM, taking into account the effective nature of the DM-Higgs couplings. We show that this DM is currently viable in most of the mass region from about 58 GeV to 2.3 TeV and will be probed more stringently by ongoing and upcoming experiments. Nevertheless, the presence of the DM-Higgs pseudoscalar coupling could make parts of the model parameter space elusive from future tests. We find that important aspects of this scenario are quite similar to those of its more popular spin-$1/2$ counterpart.
The 2dF QSO Redshift Survey — V. The 10k catalogue

We present a catalogue comprising over 10 000 QSOs covering an effective area of 289.6 deg2, based on spectroscopic observations with the 2-degree Field (2dF) instrument at the Anglo-Australian Telescope. This catalogue forms the first release of the 2dF QSO Redshift Survey. QSO candidates with 18.25<bJ<20.85 were obtained from a single homogeneous colour-selected catalogue based on APM measurements of UK Schmidt photographic material. The final catalogue will contain approximately 25 000 QSOs and will be released to the public at the end of 2002, one year after the observational phase is concluded.
Commentary On - Rescue Strategies in Anterior Circulation Stroke with Failed Mechanical Thrombectomy (RAFT)

993 Mechanical thrombectomy (MT) is a “game changer,” when it comes to treating large vessel occlusions, especially in the anterior circulation. However, a meta‐analysis of the five most important randomized controlled trials of MT revealed that the recanalization failure rates following MT were as high as 29%. [1] Newer studies have shown that large vessel recanalization—first pass or otherwise—is one of the most important factors that contribute to the outcome of acute stroke. This brings forward the following question: If a patient presents with a large vessel occlusion (in the window period) and MT has failed to recanalize the vessel, should we offer a rescue strategy to improve his/her recanalization chances, which in turn would translate as better stroke outcomes? Sadly, very few studies have addressed this issue. Rescue strategies in anterior circulation stroke with failed mechanical thrombectomy (RAFT) have tried answering this in their study and the results look promising. [2]
Assessing the Introduction of Anti-Money Laundering Law on Trade Misinvoicing: The Case of Vietnam

This paper aims to investigate the effect of the introduction of the anti-money laundering (AML) law on trade misinvoicing in Vietnam. Trade misinvoicing is the deliberate falsification of the value or quantity of goods and includes overvalued imports and undervalued exports. The AML law can positively or adversely affect trade misinvoicing. Findings are practically important for investigating the real effect of future laws. A panel regression analysis is employed to isolate the effect of the AML law on trade misinvoicing. The hypotheses related to the effect of the introduction of the AML law are empirically investigated. Using panel data from 2000 to 2019, our empirical result is that the enactment of Vietnam’s AML accelerates trade misinvoicing. This finding supports the view that individuals and firms are shifting from traditional methods of money laundering through trade-based channels when the State Bank of Vietnam promulgated legislation that focuses on financial intermediaries. This paper specifically concentrates on the effect of Vietnam’s AML law on trade misinvoicing. We provide evidence that the introduction of the AML law encourages launderers to lean on cross-border trade to disguise their money. The findings suggest a number of important policy implications for combating money laundering, especially for transition economies, such as Vietnam’s.
Spin diffusion length and polarization of ferromagnetic metals measured by the spin-absorption technique in lateral spin valves

We present measurements of pure spin current absorption on lateral spin valves. By varying the width of the absorber we demonstrate that spin current absorption measurements enable to characterize efficiently the spin transport properties of ferromagnetic elements. The analytical model used to describe the measurement takes into account the polarization of the absorber. The analysis of the measurements allows thus determining the polarization and the spin diffusion length of a studied material independently, contrarily to most experiments based on lateral spin valves where those values are entangled. We report the spin transport parameters of some of the most important materials used in spinorbitronics (Co60Fe40, Ni81Fe19, Co, Pt, and Ta), at room and low (10 K) temperatures.
Quasisymmetric distortion and rigidity of expanding endomorphisms of

In this paper we examine a result of D. Sullivan according to which two C1+? expanding endomorphisms of the circle are C1? + conjugate as soon as they are symmetrically conjugate. We develop general a priori estimates on the local distortion of quasisymmetric mappings and combine them with the classical naive distortion lemma to present a complete proof of Sullivan's result. A new proof is offered at the end that renders unnecessary the use of Markov partitions or the control of eigenvalues at periodic points.