Miracle-dz/UniFAR-FTUs huggingface dataset:
Plyometric Training Practices of Brazilian Olympic Sprint and Jump Coaches: Toward a Deeper Understanding of Their Choices and Insights

Plyometric training is extensively used by coaches to enhance neuromuscular performance in a wide variety of sports. Due to the high demands of sprint speed and power output in elite sprinters and jumpers, sprint and jump coaches are likely to have great knowledge on this topic. Undoubtedly, this expertise is even more pronounced for Olympic coaches, who work with some of the fastest and most powerful athletes in the world, and who are required to continually maintain these athletes at optimal performance levels. Describing and discussing the practices commonly adopted by these coaches in detail and extrapolating this experience to other sport coaching contexts and disciplines may be extremely relevant. The current article presents, explores, and illustrates the plyometric training practices of Brazilian Olympic sprint and jump coaches, with a special focus on training programming and exercise selection.
An inexact alternating direction method with SQP regularization for the structured variational inequalities

In this paper, we propose an inexact alternating direction method with square quadratic proximal (SQP) regularization for the structured variational inequalities. The predictor is obtained via solving SQP system approximately under significantly relaxed accuracy criterion and the new iterate is computed directly by an explicit formula derived from the original SQP method. Under appropriate conditions, the global convergence of the proposed method is proved. We show the $O(1/t)$ convergence rate for the inexact SQP alternating direction method. We also reported some numerical results to illustrate the efficiency of the proposed method.
Analysis of the temperature dependent thermal conductivity of silicon carbide for high temperature applications

The temperature dependent thermal conductivity of silicon carbide has been calculated taking into account the various phonon scattering mechanisms. The results compared very well with available experimental data. The inclusion of four-phonon processes is shown to be necessary for obtaining a good match. Several important phonon scattering parameters have been extracted in this study. Dislocations are shown to have a strong effect at 300 K, but not as much at the higher temperatures.
A Model to Determine the Current Level to Weld Closed Contacts

A model is developed to determine the peak threshold current required to weld closed contacts of a circuit breaker or switch when passing fault currents. The model considers: 1) the total contact resistance of the closed contacts by including the expected constriction resistance as well as the resistance resulting from the high temperature at the contact region; 2) the effect of the “blow-off” force from the passage of the current through the region of contact; 3) the reduction of the hardness of the contact metal in the vicinity of the high temperature at the contact region; 4) the effect of forces on the contacts from the current path through the circuit breaker or switch design; 5) the effect of the contact design; 6) the short term passage of current; 7) the effect of multiple regions of contact; and 8) the effect of the passage of current from 1 to 4 s. Published experimental data of threshold welding current are compared to the analytical model.
Effect of 10.6 μm laser moxibustion on inflammation in diabetic peripheral neuropathy rats

Diabetic peripheral neuropathy (DPN) is the main cause of disability in diabetes patients but the efficacy of available drugs is poor. Moxibustion is an adjunctive treatment for DPN that can reduce symptoms. The peak value of the far infrared wavelength of 10.6 μm laser moxibustion is close to the infrared radiation spectrum of traditional moxibustion. Its effect is similar to that of moxibustion and does not cause pain, infection or produce irritating smoke. Twenty-four male SD rats were divided into control (Con), DPN, laser moxibustion (LM), and pyrrolidine dithiocarbamate (PDTC) groups (n=6/group). The DPN, LM and PDTC group rats were intraperitoneally injected with 1% streptozotocin (STZ) to induce a model of DPN. LM group rats were irradiated with a laser at bilateral ST36 acupoints for 15 min, once every other day, for 14 days. PDTC group rats were intraperitoneally injected with PDTC once a day. Body weight, blood glucose, and paw withdrawal mechanical threshold (PWMT) were measured and laser speckle imaging (LSI) performed before and after modeling and at 1 and 2 weeks after intervention. Two weeks after intervention, changes in serum interleukin 1β (IL1β), interleukin 6 (IL6), tumor necrosis factor α (TNFα) and nerve growth factor (NGF) were analyzed, and the abundance of NF-κB and IκB-α proteins and levels of NF-κB and IκB-α mRNAs in the sciatic nerve were observed. The results showed that 10.6 μm laser moxibustion can relieve pain, improve microcirculation, and alleviate inflammation in DPN rats, possibly via the NF-κB inflammatory pathway.
Does Internet Usage Lead to An Increase in Household Incomes? Indonesian Rural Case Study

This study analyzes the effect of internet utilization on household income in rural In-donesia using Sakernas 2018 data. This research uses propensity score matching (PSM) to achieve the research objectives. The results show that the probabilities of using the internet are caused by family size, age of the head of the household, work experience, marital status, formal and informal education, experiencing severe difﬁculties in bodily functions, gender, business sector, and ﬁnancial management. Furthermore, the study ﬁnds that the internet utilization increases household income in rural Indonesia by 29 percent.
Satellite determination of the mesoscale variability of the sea surface temperature

Satellite infrared data hav-e been used to investigate the mesoscale variability of the SST (sea surface temperature) field. A statistical analysis of the SST field has been performed by means of the structure function. Results give the equivelent power-law exponent n of the spatial vaiiance density spectrum E(k) --k-t::1ne exponent n was found to vary from 1.5 to 2.3 with a mean value of 1.8 in t-he iange of scales 3-100 km which is in agreement with previous one-dimensional analysis from shipborne anj,"i. - borne measurements' These otrserved values of z are discussed und cornpu.lJ with the vàlues predicted by turbulence theories.
Backflows by active galactic nuclei jets: global properties and influence on supermassive black hole accretion

Jets from Active Galactic Nuclei (AGN) inflate large cavities in the hot gas environment around galaxies and galaxy clusters. The large-scale gas circulation promoted within such cavities by the jet itself gives rise to backflows that propagate back to the center of the jet-cocoon system, spanning all the physical scales relevant for the AGN. Using an Adaptive Mesh Refinement code, we study these backflows through a series of numerical experiments, aiming at understanding how their global properties depend on jet parameters. We are able to characterize their mass flux down to a scale of a few kiloparsecs to about $0.5\,\mathrm{M_\odot/y}$for as long as $15$ or $20$ Myr, depending on jet power. We find that backflows are both spatially coherent and temporally textbf{intermittent}, independently of jet power in the range $10^{43-45}$ erg/s. Using the mass flux thus measured, we model analytically the effect of backflows on the central accretion region, where a Magnetically Arrested Disk lies at the center of a thin circumnuclear disk. Backflow accretion onto the disk modifies its density profile, producing a flat core and tail. We use this analytic model to predict how accretion beyond the BH magnetopause is modified, and thus how the jet power is temporally modulated. Under the assumption that the magnetic flux stays frozen in the accreting matter, and that the jets are always launched via the Blandford-Znajek (1977) mechanism, we find that backflows are capable of boosting the jet power up to tenfold during relatively short time episodes (a few Myr).
N-euro Predictor

Jitter and lag severely impact the smoothness and responsiveness of user experience on vision-based human-display interactive systems such as phones, TVs, and VR/AR. Current manually-tuned filters for smoothing and predicting motion trajectory struggle to effectively address both issues, especially for applications that have a large range of movement speed. To overcome this, we introduce N-euro, a residual-learning-based neural network predictor that can simultaneously reduce jitter and lag while maintaining low computational overhead. Compared to the fine-tuned existing filters, N-euro improves prediction performance by 36% and smoothing performance by 42%. We fabricated a Fish Tank VR system and an AR mirror system and conducted a user experience study (n=34) with the real-time implementation of N-euro. Our results indicate that the N-euro predictor brings a statistically significant improvement in user experience. With its validated effectiveness and usability, we expect this approach to bring a better user experience to various vision-based interactive systems.
Colloids as big atoms: the genesis of a paradigm

This viewpoint relates to an article by Brown et al ( 1975 J. Phys. A: Math. Gen. 8 664 – 82 ) and was published as part of a series of viewpoints celebrating some of the most in ﬂ uential papers published in J. Phys. A which is celebrating its 50th anniversary.
Hampshire Scholars

[ 1 ] Net ecosystem CO 2 exchange (NEE) was measured from June 2000 through October 2001 by 10 automatic chambers at a peatland in southeastern New Hampshire. The high temporal frequency of this sampling method permitted detailed examination of NEE as it varied daily and seasonally. Summer of 2001 was significantly drier than the 30-year average, while summer of 2000 was wetter than normal. Although NEE varied spatially across the peatland with differences in plant species composition and biomass, maximum CO 2 uptake was 30–40% larger in the drier summer in evergreen and deciduous shrub communities but the same or lower in sedge sites. Ecosystem respiration rates were 13– 84% larger in the drier summer depending on plant growth form with water table and temperature as strong predictors. Ecosystem respiration was also correlated with maximum ecosystem productivity and foliar biomass suggesting that plant processes, water table, and temperature are tightly linked in their control of respiratory losses. The ratio between maximum productivity and respiration declined for evergreen shrub and sedge sites between the wet and dry summer, but increased in deciduous shrub sites. A drier climate may reduce the CO 2 sink function of peatlands for some growth forms and increase it for others, suggesting that ecosystem carbon and climate models should account for differences in growth form responses to climate change. It also implies that plant functional types respond on short timescales to changes in moisture, and that the transition from sedges to shrubs could occur rapidly in peatlands under a drier and warmer climate. I
Estimating Monthly Precipitation Reconstruction Uncertainty Beginning in 1900

Uncertainty estimates are computed for a statisticalreconstruction of globalmonthly precipitation that was developed in an earlier publication. The reconstruction combined the use of spatial correlations with gauge precipitation and correlations between precipitation and related data beginning in 1900. Several types of errors contribute to uncertainty, including errors associated with the reconstruction method and input data errors. This reconstruction includes the use of correlated data for the ocean-area ﬁrst guess, which contributes to much of the uncertainty over those regions. Errors associated with the input data include random, sampling, and bias errors. Random and bias data errors are mostly ﬁltered out of the reconstruction analysis and are the smallest components of the total error. The largest errors are associated with sampling and the method, which together dominate the total error. The uncertainty estimates in this study indicate that (i) over oceans the reconstruction is most reliable in the tropics, especially the Paciﬁc, because of the large spatial scales of ENSO;(ii) over thehigh-latitude oceansmultidecadalvariations are fairlyreliable,but manymonth-to-month variations are not; and (iii) over-and near-land errors are much smaller because of local gauge. The reconstruction indicates that the average precipitation increases early in the twentieth century, followed by several decades of multidecadal variations with little trend until near the end of the century, when precipitation again appears to systematically increase. The uncertainty estimates indicate that the average changes over land are most reliable, while over oceans the average change over the reconstruction period is slightly larger than the uncertainty.
New Method for Continuous Transmissivity Proﬁling in Fractured Rock

A new method is presented to search for hydraulically transmissive features in open boreholes in bedrock. A ﬂexible borehole liner made of a watertight, nylon fabric is ﬁlled with water to create a constant driving head to evert (reverse of invert) the liner down the hole so that the liner pushes the borehole water out into transmissive fractures or other permeable features. The descent rate is governed by the bulk transmissivity of the remaining permeable features below the liner. Initially, the liner descent rate or velocity is a measure of transmissivity ( T ) of the entire hole. As the everting liner passes and seals each permeable feature, changes in the liner velocity indicate the position of each feature and an estimate of T using the Thiem equation for steady radial ﬂow. This method has been performed in boreholes with diameters ranging from 96 to 330 mm. Proﬁling commonly takes a few hours in holes 200-to 300-m long. After arrival of the liner at the bottom of the hole, the liner acts as a seal preventing borehole cross connection between transmissive features at different depths. Liner removal allows the hole to be used for other purposes. The T values determined using this method in a dolostone aquifer were found to be similar to the values from injection tests using conventional straddle packers. This method is not a replacement for straddle-packer hydraulic testing of speciﬁc zones where greater accuracy is desired; however, it is effective and efﬁcient for scanning entire holes for transmissive features.
Is investor sentiment contagious? International sentiment and UK equity returns

This paper contributes to a growing body of literature studying investor sentiment. Separate sentiment measures for UK investors and UK institutional investors are constructed from commonly cited sentiment indicators using the first principle component method. We then examine if the sentiment measures can help predict UK equity returns, distinguishing between “turbulent” and “tranquil” periods in the financial markets. We find that sentiment tends to be a more important determinant of returns in the run-up to a crisis than at other times. We also examine if US investor sentiment can help predict UK equity returns, and find that US investor sentiment is highly significant in explaining the UK equity returns.
Oil Price Shocks and Current Account Imbalances within a Currency Union

For over two decades, current account imbalances have been an essential issue in the global policy debate as they threaten the world economy’s stability. More recently, the government debt crisis of the European Union shows that internal current account imbalances of a currency union may also add to these risks. Moreover, oil price fluctuations and a contracting monetary policy that reacts to oil prices, previously discussed to affect the current account, may threaten the currency union by increasing internal imbalances. Therefore, this paper analyzes the oil price shock’s impact on current account imbalances of a currency union with asymmetric labor market institutions. In this context, we show that oil price shocks can have a long-lasting effect on internal balances that the common monetary olicy authority can reduce by choosing a core inflation target. Targeting core inflation, however, comes at the cost of lower production and higher unemployment. We show that these costs can be significantly reduced by increasing labor market flexibility.
). Integrating electrostatic adhesion to composite structures. In Industrial and Commercial Applications of Smart Structures Technologies

Additional functionality within load bearing components holds potential for adding value to a structure, design or product. We consider the adaptation of an established technology, electrostatic adhesion or electroadhesion, for application in glass fibre reinforced polymer (GFRP) composite materials. Electroadhesion uses high potential difference (~2-3 kV) between co-planar electrodes to generate temporary holding forces to both electrically conductive and non-conductive contact surfaces. Using a combination of established fabrication techniques, electroadhesive elements are co-cured within a composite host structure during manufacture. This provides an almost symbiotic relationship between the electroadhesive and the composite structure, with the electroadhesive providing an additional functionality, whilst the epoxy matrix material of the composite acts as a dielectric for the high voltage electrodes of the device. Silicone rubber coated devices have been shown to offer high shear load (85kPa) capability for GFRP components held together using this technique. Through careful control of the connection interface, we consider the incorporation of these devices within complete composite structures for additional functionality. The ability to vary the internal connectivity of structural elements could allow for incremental changes in connectivity between discrete sub-structures, potentially introducing variable stiffness to the global structure.
Fluorescence properties and energy level structure of Ce-doped silica fiber materials

A Ce-doped silica fiber material is prepared using powder-in-tube technique via sol-gel method. Its absorption and emission spectra are investigated from experimental and theoretical perspectives. The experimental results show an absorption band at 320 nm and a broad emission band at 430 nm, which comprises of two bands at 420 and 470 nm, respectively. In addition, a local microstructure model of the Ce-doped silica fiber material is developed and its structure parameters and fluorescence spectra are calculated using density functional theory. The theoretical results indicate a strong absorption peak at 336 nm and an emission peak at 486 nm. Furthermore, the spontaneous emission lifetime is also calculated to be approximately 64.82 ns. This confirms theoretically that the Ce-doped silica materials possess the scintillator characteristics. Moreover, an energy level diagram for the Ce-doped silica fiber material is constructed. It is significant for understanding the fluorescence properties of the Ce-doped silica fiber material at the microstructural level.
Global perspective of kidney diseases: Challenges and changes

Chronic kidney disease (CKD) is a major public health issue worldwide. Although strategies for prevention, early detection and treatment to reduce the progression of CKD should remain continuous endeavours, public funding for kidney replacement therapy is urgently needed in low‐income countries (LICs) and lower‐middle‐income countries (LMICs). A multisectoral approach is needed to tackle the global burden of kidney disease. Getting a new drug, from first testing to final approval by a regulatory agency and ultimately to market, is a long, costly and risky process. While clinical trials and research have delivered new therapies and devices to patients with kidney disease during the last decade, there remains a significant residual risk for patients with CKD. Therefore, developing new drugs for better treatment and patient care is essential. For this purpose, the ISN held a consensus meeting entitled ‘TRANSFORM; TRAnslational Nephrology Science FOR new Medications’, which connected experts in the global kidney community and provided guidance on optimal management of translational animal studies for the development of new drugs to treat kidney diseases.
All linear representations of the Poincaré group up to dimension 8

All representations of the universal covering of the Poincare group on a complex vector space of dimension 8 or less, including the incompletely reducible representations, are determined explicitly. Considering two representations conjugate by a fixed linear transformation as the same, there are only a finite and small number of indecomposable such representations in each such dimension. Their invariant sesquilinear forms, and their extensions to discrete symmetries, scale transformations, and to the conformal group are also determined. Certain of the results and methods are applicable to other semi-direct product groups. RESUME. Toutes les representations complexes de dimension 8 du groupe de Poincare, y compris celles qui ne sont pas completement reducibles, sont determinees explicitement. Deux representations étant considerees identiques si l’une est conjuguee de l’autre par une transformation lineaire fixe, on trouve qu’il existe un nombre fini de telles representations indecomposables. Leurs formes sesquilinaires invariantes, et leurs extensions a des symmetries discretes, aux homotheties, et au groupe conforme sont egalement determinees. Certains resultats et les methodes utilisees sont applicables a l’étude d’autres produits semi-directs. Annales de l’Institut Henri Poincaré Physique theorique Vol. 40, 0020-2339/1984/35/$ 5,00/ (Ç) Gauthier-Villars
UV and Laser Diode as a Source of Flavonoids Stimulation Production in Marigold Calendula officinalis

Calendula officinalis is an important herbal plant as it is a source of value compounds, and it is a convenient model for plant micro propagation. The aim of this study was micro propagation of C. Officinalis and evaluation of the efficiency of Laser diode and UV-C irradiation, in the stimulation of flavonoids biosynthesis and accumulation in vitro culture. BA 1.5mg. L−1 had a significant effect on the number of explants, reached 6.7 shoots.explant−1. While the nodes, BA 1.mg. L−1 had the highest effect on the average shoot length explants, which increased to 2.9 cm. UV exposure resulted in an increase in the shoots and number of leaves of explants treated by BA 1.5 mg/L. After 60 min of UV exposure, the accumulation of flavonoids Rutin in marigold increased to 343.458 ppm /g compared to the control 21.735 ppm/g. Galic acid decreased to 0.122 ppm/ g. The laser diode caused more changes in flavonoids, the Rutin was 4.742ppm /g while Gallic acid reached 50.825 ppm/g, about 5-fold. This stimulation by laser can act as an actor to stimulate one compound and reduce the others, it seems the plant’s secondary compounds compete with each other’s and sometimes with the same type, like Rutin and Galic acid.