Miracle-dz/UniFAR-FTUs huggingface dataset:
Association of Self-regulation With Obesity in Boys vs Girls in a US National Sample

Importance Poor self-regulation in childhood is associated with increased risk of obesity. However, studies have assumed that greater self-regulation is associated with a lower obesity risk and have rarely examined differences in the association by sex. Objectives To examine how different levels of toddler self-regulation are associated with the prevalence of obesity at kindergarten age and whether the pattern of association is different between boys and girls. Design, Setting, and Participants This was a prospective cohort study using data from the Early Childhood Longitudinal Study, Birth Cohort, a nationally representative sample of 10 700 US children born in 2001 and followed up through kindergarten entry (2006-2007). The analytic sample included 6400 children with observed toddler self-regulation. Data collection occurred in children’s homes and consisted of a parent interview and direct assessment of the child. Data analysis took place between May 2016 and March 2018. Exposures During a standardized, in-home, developmental assessment at 24 months of age, observers scored 4 dimensions of children’s self-regulation: adaptability, attention, persistence, and frustration tolerance. Self-regulation scores ranging from a low of 4 to a high of 20 were grouped into quartiles. Main Outcomes and Measures With use of measured heights and weights at 5.5 years, obesity was defined as a body mass index for age in the 95th percentile or greater. Results The analytic sample consisted of 6400 children (3250 boys [50.6%, weighted]), with a median age of 24.1 months (interquartile range, 23.4-24.7 months) and 64.5 months (interquartile range, 61.7-67.6 months) at the self-regulation and body mass index assessments, respectively. Self-regulation scores were lower for boys than for girls (mean, 13.7 [95% CI, 13.4-13.9] vs 14.9 [95% CI, 14.7-15.1]), and the lowest self-regulation quartile comprised more boys than girls (weighted percentages, 66.5% vs 33.5%). The prevalence of obesity at 5.5 years was 19.2% among boys and 16.5% among girls. The pattern of association between toddler self-regulation and obesity at 5.5 years was different for boys and girls (P = .008 for interaction). Among boys, the adjusted prevalence of obesity was 19.7%, 18.3%, 20.3%, and 15.9% from lowest to highest quartile of self-regulation. In contrast, among girls, there was a U-shaped association (adjusted prevalence of obesity from lowest to highest self-regulation quartile, 17.0%, 10.3%, 10.7%, and 15.0%). Conclusions and Relevance In a large national cohort of US children, there were differences between boys and girls in the pattern of the association between self-regulation at 24 months and obesity at 5.5 years of age. Obesity prevention efforts aimed at improving self-regulation may have different results for girls and boys.
Gastrointestinal and Extra-Intestinal Manifestations of IgG4-Related Disease.

IgG4-related disease (IgG4-RD) is a chronic relapsing multi-organ fibro-inflammatory syndrome of presumed autoimmune etiology. It is characterized by increased serum levels of IgG4 and tissue infiltration by IgG4+ cells. Increased titers of autoantibodies against a spectrum of self-antigens and response to steroids have led to its characterization as an autoimmune disease. However, the pathognomonic antigens probably differ among manifestations, and different antigens or autoantibodies produce similar immune reactions in different organs. Little is known about the pathogenic effects, if any, of serum IgG4 or IgG4+ plasma cells in tissues. Despite several animal models of the disease, none truly recapitulates human IgG4-RD. Histologic analyses of tissues from patients with IgG4-RD reveal a dense lymphoplasmacytic infiltrate rich in IgG4+ plasma cells, storiform fibrosis, and obliterative phlebitis, although these features vary among organs. Typical presentation and imaging findings include mass-forming synchronous or metachronous lesions in almost any organ, but most commonly in the pancreas, bile duct, retroperitoneum, kidneys, lungs, salivary and lacrimal glands, orbit, and lymph nodes. In all organs, inflammation can be reduced by corticosteroids and drugs that deplete B cells, such as rituximab. Patients with IgG4-RD have relapses that respond to primary therapy. Intense fibrosis accompanies the inflammatory response, leading to permanent organ damage and insufficiency. Death from IgG4-RD is rare. IgG4-RD is a multi-organ disease with predominant pancreatico-biliary involvement. Despite its relapsing-remitting course, patients have an excellent prognosis.
Evaluation of Decision Feedback Equalization and Viterbi Algorithm Detection for Voiceband Data Transmission - Part I

The application of QAM receivers employing passband decision feedback equalization or Viterbi algorithm detection is considered for high-speed data transmission in voiceband telephone channels. Analytical results for the Viterbi receiver indicate that it can permit digital data transmission with symbol rates exceeding the nominal bandwidth capabilities of the channel. However, it is also shown that the minimum distance of partial response-type impulse responses can substantially decrease due to small demodulation phase errors. Thus, decision feedback receivers may offer more robust performance on channels with phase jitter.
Time series analysis, forecasting and control

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The Radiation Characteristics of Conical Horn Antennas

This paper reports the measured radiation characteristics of conical horns employing waveguide excitation. The experimentally derived gains are in excellent agreement with the theoretical results (unpublished) obtained by Gray and Schelkunoff. The gain and effective area is given for conical horns of arbitrary proportions and the radiation patterns are included for horns of optimum design. All dimensional data has been normalized in terms of wavelength, and are presented in convenient nomographic form.
Theory and Design of the Surface Acoustic Wave Multistrip Coupler

The multistrip coupler performs the function of a directional coupler for freely propagating surface acoustic waves on a piezoelectrically active substrate. Its operation is analyzed in terms of a transmission line based equivalent circuit. Expressions are obtained for the directionality (transmission and reflection) in terms of the number of coupler strips and the acoustic frequency. Theory and experiment are shown to be in very good agreement. 50-percent metallization is found to give optimum performance; progressive increase in the proportion of the coupler area covered with metal is shown to involve a progressive change from an inline field model to a crossed-field model. Outside a stopband region it is found that a simplified expression for the directionality is valid; this greatly facilitates component design. Design criteria for multistrip components are discussed in terms of substrate and bandwidth requirements. An analysis is included of resistive and capacitative effects on coupling, and problems associated with coupling between dissimilar materials are discussed.
Error Probability for Direct-Sequence Spread-Spectrum Multiple-Access Communications - Part II: Approximations

Approximations are obtained for the average probability of error in an asynchronous direct-sequence spread-spectrum multiple-access communications system. Both binary and quaternary systems are considered, and the chip waveforms are allowed to be arbitrary time-limited waveforms with time duration equal to the inverse chip rate. The approximation is based on the integration of the characteristic function of the multiple-access interference. The amount of computation required to evaluate this approximation grows only linearly with the product of the number of simultaneous transmitters and the number of chips per bit. The accuracy of the approximation is extremely good in most cases, but it can be improved, if necessary, by an application of a series expansion. Numerical results are presented for specific chip waveforms and signature sequences.
Risk factors associated with injury and concussion in sanctioned amateur and professional mixed martial arts bouts in Calgary, Alberta

Background There is limited literature that examines risk factors for injury and mild traumatic brain injury (mTBI) in mixed martial arts (MMA). An examination of previously unstudied bout and athlete characteristics that may pose health risks while partaking in this sport is warranted. Hypothesis/purpose To determine the incidence of injury and concussion, along with the identification of risk factors that contribute to injury and mTBI in amateur and professional MMA bouts in Calgary, Alberta. Study design A retrospective cohort study with case–control design. Methods Calgary amateur and professional MMA records were examined from 1 January 2010 to 31 December 2015. Descriptive statistics were used to describe the incidence of injury and concussion, along with univariate and multivariable logistic regression to identify risk factors for injury and mTBI. Results The injury rate per 100 athlete exposure (AE), the injury rate per 100 min of exposure and the concussion rate per 100 AE were 23.6 (95% CI 20.5 to 27.0), 4.1 (95% CI 3.48 to 4.70) and 14.7 (95% CI 11.8 to 17.2), respectively. The most common location of injury was the head and mTBI was the most common type of injury. Athletes whose bout was finished by a knockout/technical knockout, corner stoppage, draw, no contest or physician, and those whose country of origin was non-Canadian, were more likely to sustain an injury. No risk factors for concussion were shown to be significant. Conclusion Engaging in MMA exposes athletes to inherent risk and several recommendations are proposed to reduce these risks. Future prospective investigations are necessary to better delineate the findings in this study.
The Impact of the Australasian ‘Health Star Rating’, Front-of-Pack Nutritional Label, on Consumer Choice: A Longitudinal Study

Front-of-pack (FoP) nutrition labels are a widely deployed tool in public good marketing. This article reports on a field experimental test of the impact of one of these systems, the Australasian Health Star Rating system (HSR), on consumer choice in the breakfast cereals category in New Zealand. This study forms part of a time-series replication stream of research on this topic. The research applied a 2 × 2 factorial design with multiple replications to retail food consumers exiting from supermarkets in New Zealand. The first part of the time series, undertaken shortly after the HSR’s initiation in 2014, indicated that the HSR was ineffective. Between 2014 and 2016, commercial brands in the category within New Zealand massively promoted the HSR as a basis for consumer choice. The research presented in this article forms part of the second part of the series, undertaken in 2016, using an identical experimental methodology to the 2014 study. The results indicate that the HSR may be beginning to influence consumer choice as it was predicted to, but the impact of the system is still small, and statistically sub-significant, relative to other consumer decision inputs presented on the package.
Generalized Resolution in Radar Systems

A generalized theory of radar resolution has been developed to facilitate understanding of the fundamental resolution limitations of radar systems. Previous work by Woodward and Elspas to determine limitations on radar resolution led to the concept of an ambiguity function which is a quantitative measure of radar resolution in range and range rate. This theory has been extended to include simultaneous resolution in range, range rate, azimuth and elevation and led to the derivation of a four-dimensional ambiguity function. Resolution constants derived from the ambiguity function show clearly the trade-offs between system parameters and resolution. A new concept, "angular dispersion and compression," has been evolved from the theoretical development. An angular compression system, analogous to a pulse compression system, employs a pseudo-randomly dispersed pattern which is compressed in angle at the receiver with a correlation technique, to produce the effect of a narrow beam without having a physically narrow beam. The signal bandwidth's effect on the pattern of an antenna and on its angular resolution has been found to be slight, except for very large bandwidths. It has been concluded that trade-offs between signal complexity and antenna complexity have no practical advantage. Because of the presence of noise, radar measurement of target parameters is essentially equivalent to statistical estimation. Woodward and Elspas have shown that the range, range-rate ambiguity function is the natural quantity to use in making a maximum likelihood estimate of range and range rate. The technique of maximum likelihood estimation has been extended to angular measurement.
The Impacts of Implementing Problem-Based Learning (PBL) in Mathematics: A Review of Literature

Mathematics is a subject that relates to the real world and is applied in various fields. However, the teaching and learning of mathematics is more procedural and requires drill and practice. For this reason, students of mathematics become passive receivers who are unable to think mathematically. The literature indicates that Problem-based learning(PBL) is a studentcentered approach that is able to stimulate students’ thinking. Accordingly, the present study investigates the implementation of PBL at school level and the impact of learning mathematics through PBL in secondary schools. The analysis showed that PBL gave positive impact on the secondary school students in mathematics and the approach was found to be applicable in various knowledge domains in mathematics. However, teacher’s role should be explored concurrently with the usage of ICT and the duration of PBL implementation should be considered based on the curriculum objectives, especially in algebra. The study concludes that PBL is able to enhance students’ thinking and soft skill, which are necessary to fullfill the requirement of education in the twenty-first century.
A 1-/spl mu/A front end for pacemaker atrial sensing channels with early sensing capability

A low-power front end for a pacemaker atrial sensing channel based on level detection is presented. The very tight system specifications in terms of power consumption and output noise, the need to operate with a supply voltage decreasing from 2.8 to 2 V during the battery lifetime, and additional functionalities with respect to standard front ends, like gain programmability and early sensing, make the design of this system a challenge. The front end includes a preamplifier and a third-order switched capacitor filter, and it is fabricated in a 0.8 μm CMOS technology. It features a 1 μA current consumption at a supply voltage of 2.7 V, and an input referred total noise of 6.9 μVrms.
Surge Impedance and its Application to the Lightning Stroke

Corona effects and a temporary high resistance introduced into the path of the return-stroke current are two factors that contribute to the determination of the velocity of the propagation and surge impedance of the return stroke. Using field theory concepts it is estimated that the surge impedance of the stroke is about 3,000 ohms. This quantity is of value in estimating the length of the last step and wave front of the stroke current.
Sensitivity Tests of Pellets Made from Manganese Antimonate Nanoparticles in Carbon Monoxide and Propane Atmospheres

Nanoparticles of manganese antimonate (MnSb2O6) were prepared using the microwave-assisted colloidal method for its potential application as a gas sensor. For the synthesis of the oxide, manganese nitrate, antimony chloride, ethylenediamine and ethyl alcohol (as a solvent) were used. The precursor material was calcined at 800 °C in air and analyzed by X-ray diffraction. The oxide crystallized into a hexagonal structure with spatial group P321 and cell parameters a = b = 8.8054 Å and c = 4.7229 Å. The microstructure of the material was analyzed by scanning electron microscopy (SEM), finding the growth of microrods with a size of around ~10.27 μm and some other particles with an average size of ~1.3 μm. Photoacoustic spectroscopy (PAS) studies showed that the optical energy band (Eg) of the oxide was of ~1.79 eV. Transmission electron microscopy (TEM) analyses indicated that the size of the nanoparticles was of ~29.5 nm on average. The surface area of the powders was estimated at 14.6 m2/g by the Brunauer–Emmett–Teller (BET) method. Pellets prepared from the nanoparticles were tested in carbon monoxide (CO) and propane (C3H8) atmospheres at different concentrations (0–500 ppm) and operating temperatures (100, 200 and 300 °C). The pellets were very sensitive to changes in gas concentration and temperature: the response of the material rose as the concentration and temperature increased. The results showed that the MnSb2O6 nanoparticles can be a good candidate to be used as a novel gas sensor.
Life Curves of Epoxy Resin under Impulses and the Breakdown Parameters

Lives of pin-plane and sphere-plane configurations were investigated. The number of impulses required to produce breakdown depended on the applied stress, the specimen thickness and area, and the resin formulation. Theoretical models were constructed suggesting an avalanche or streamer type of breakdown destroying dielectric near the anode. Breakdown parameters were estimated.
Mast Cells Stimulated with Peptidoglycan from Staphylococcus aureus Augment the Development of Th1 Cells.

BACKGROUND The skin of patients with atopic dermatitis (AD) is superficially colonized by Staphylococcus aureus. We have previously found that percutaneous permeation of peptidoglycan (PEG) from S. aureus increases the number of mast cells in the dermis, as seen in skin lesions of AD patients. The purpose of the present study was to clarify the influence of PEG on T helper type 1 (Th1)/ T helper type 2 (Th2) cell development mediated by mast cells. METHODS Mast cells were induced by long-term culture of murine spleen cells in medium supplemented with tumor necrosis factor (TNF)- a. Ovalbumin (OVA) peptide-pulsed mast cells were incubated with naïve Th cells in the presence or absence of PEG. Five days later, Th cells in the culture were stimulated with phorbol 12-myristate 13-acetate (PMA) and ionomycin, and Th1/Th2 cytokine production was investigated by enzyme-linked immunosorbent assay. RESULTS It was confirmed that the mast cells we obtained had surface expression of I-Ad, worked as antigen-presenting cells, and induced Th1 cell and Th2 cell development. The stimulation of mast cells with PEG enhanced the development of Th1 cells but not that of Th2 cells. The increase of Th1 cell development stimulated by PEG was associated with an increase in the expression of Notch ligand Delta 1 in the mast cells. Furthermore, treatment of mast cells with the macrolide antibiotic josamycin suppressed Th1 cell development and this was correlated with a reduction of both Delta 1 expression and interleukin (IL)-12 production in mast cells. CONCLUSIONS Colonization of S. aureus on the lesioned skin of AD patients contributes to not only an increase in the number of mast cells but also Th1 cell development mediated by mast cells in the dermis and subsequent induction of chronic inflammation, which is characterized by up-regulation of the Th1 cytokine, interferon (IFN)- g. Therefore, application of josamycin to the lesional skin of AD patients may provide relief from chronic inflammation mediated by mast cells.
The Effect of Normally Distributed Random Phase Errors on Synthetic Array Gain Patterns

In the practical formation of synthetic array patterns the individual signals which are integrated to form the array will sustain uncompensated phase shifts. If these uncompensated phase shifts are deterministic, the evaluation of their effect on the synthetic array radiation pattern is straightforward. On the other hand, if the uncompensated phase shifts are random, such as would be produced by propagation anomalies, a statistical study must be made to determine statistical measures of the effects on the radiation pattern. Part I describes an analytical study of the effects of normally distributed random phase errors on synthetic array performance. The statistical measures of performance derived include expected beam broadening, rms beam canting, and expected loss in peak gain. The analysis is limited to the case of small rms difference in phase error across the array. Part II describes a Monte Carlo simulation study which removed the restriction of small rms phase error difference. In addition, the simulated radiation pattems generated in the simulation study allowed the computation of the statistics of the ratio of main lobe to integrated sidelobe power. This performance parameter is, in general, the most sensitive of all the performance measures to residual uncompensated phase errors.