Miracle-dz/UniFAR-FTUs huggingface dataset:
The power function of range and studentized range tests in normal samples

where X = EXi/n. Without loss of generality, we take EEi = 0 and 61 . 6 ,T. Note that unlike the distribution of x'2, which is a noncentral x2 with n 1 degrees of freedom depending only on E62 the cumulative distribution function (1) depends on n 1 differences of the Ei, for example 7 61 (h = 2, ., n). For a few selected cases (1) was evaluated by David (1953) in the course of an investigation of the power of short-cut tests, based on the range, of the hypothesis, Ho, of equality of the Ei. It was seen that, for a configuration of the 6 favourable to the range, W' could give a more powerful test than x'2. It may also be lnoted that, in an empirical study of various tests of homogeneity of variance in normal populations, Pearson (1966) found Smax/Smin and Wmax/Wmin to be as good as the standard 111 test for certain patterns of the population variances. These results are closely related to the behaviour of the range in nonnormal samples since, for example,
Model scattering envelopes of young stellar objects. I - Method and application to circumstellar disks

We describe a Monte Carlo code that accurately treats multiple scattering, absorption, and polarization by dust, and use this code to calculate images of dusty disks around young stellar objects. We present some approximate analytic results that describe the behavior of the Monte Carlo calculations. A geometrically thin disk illuminated by a central T Tauri star scatters very little light at distances of many AU from the star. Viewed at any inclination, the flux scattered by such a disk at the distance to the nearest star-forming region will be overwhelmed by the stellar image. An optically thick disk that has a flaring surface may be observable, especially if viewed nearly edge-on so that the stellar source becomes occulted. An optically thin disk with a finite opening angle, similar to the one surrounding beta Pictoris, is about as observable as the typical flared optically thick disk at a similar distance from the earth. The polarization position angle is perpendicular to the disk plane in all of the models, in contrast to observations of many young stellar objects which have the position angle oriented parallel to the presumed disk plane. We suggest that the scattered light structures observed around many premain-sequence objects are dusty envelopes rather than disks.
The generation of gravitational waves. III. Derivation of bremsstrahlung formulae.

Formulae are derived describing the gravitational waves produced by a stellar encounter of the following type: The two stars have stationary (i.e., nonpulsating), nearly Newtonian structures with arbitrary relative masses; they fly past each other with an arbitrary relative velocity; and their impact parameter is sufficiently large that they gravitationally deflect each other through an angle small compared to 90/sup 0/.
Crime, Consumption, and Choice: On the Interchangeability of Licit and Illicit Income

Objectives We examine the rational assumption of the interchangeability of legal and illegal monies. Drawing from economics, behavioral economics, and sociology we answer two main research questions: (1) Do offenders perceive money earned across various income-generating activities (legal vs. illegal) in the same way? (2) How do consumption patterns (spending and saving) differ across various forms of income-generating activities? Methods We use an a priori mixed methods approach with two interrelated studies; a quantitative survey of incarcerated offenders (N = 58) and a qualitative study of semi-structured interviews from four separate previous research projects (N = 107). Results We find evidence for the existence of differential consumption patterns based on quantitative and qualitative data from both incarcerated and active offenders regarding their patterns of spending legal and illegal money. Conclusions Our findings have implications for choice theories of crime, for public policy approaches to poverty, and crime prevention interventions.
How the smart product attributes influence consumer adoption intention

Compared with traditional products, the connection attributes and intelligence attributes of the smart product are their differentiated competitive advantages. In order to understand how smart product attributes affect consumer attitudes and the influencing mechanism, we carry out this study. In the framework of psychological empowerment, this paper explores the relationship between smart product attributes and consumers’ adoption intention. We consider that companies can launch a range of smart products, where the probability of success is related to the degree to which intelligent and connection attributes stimulate consumer motivation. Smart products with intelligence attributes and connection attributes can improve consumers’ cognition of the four motivations consist of meaning, ability, autonomy and influence, which activate consumers’ psychological sense of empowerment, and thus improve consumers’ willingness to adopt. In addition, we also find that consumer heterogeneity influences this process. This paper mainly reports the moderating effect of Consumer domain-specific innovation. We find that the connection and intelligence attributes of smart products stimulate consumers’ adoption intention effectively. The findings of this paper complement innovation management literature related to smart product attributes and provide suggestions for enterprises to introduce smart products.
The effect of individual state on the strength of mate choice in females and males

Abstract Animals are thought to gain significant fitness benefits from choosing high-quality or compatible mates. However, there is large within-species variation in how choosy individuals are during mating. This may be because the costs and benefits of being choosy vary according to an individual’s state. To test this, I systematically searched for published data relating the strength of animal mate choice in both sexes to individual age, attractiveness, body size, physical condition, mating status, and parasite load. I performed a meta-analysis of 108 studies and 78 animal species to quantify how the strength of mate choice varies according to individual state. In line with the predictions of sexual selection theory, I find that females are significantly choosier when they are large and have a low parasite load, thus supporting the premise that the expression of female mate choice is dependent on the costs and benefits of being choosy. However, female choice was not influenced by female age, attractiveness, physical condition, or mating status. Attractive males were significantly choosier than unattractive males, but male mate choice was not influenced by male age, body size, physical condition, mating status, or parasite load. However, this dataset was limited by a small sample size, and the overall correlation between individual state and the strength of mate choice was similar for both sexes. Nevertheless, in both males and females individual state explained only a small amount of variation in the strength of mate choice.
The Geomagnetic Field (GMF) Is Necessary for Black Garden Ant (Lasius niger L.) Foraging and Modulates Orientation Potentially through Aminergic Regulation and MagR Expression

The geomagnetic field (GMF) can affect a wide range of animal behaviors in various habitats, primarily providing orientation cues for homing or migratory events. Foraging patterns, such as those implemented by Lasius niger, are excellent models to delve into the effects of GMF on orientation abilities. In this work, we assessed the role of GMF by comparing the L. niger foraging and orientation performance, brain biogenic amine (BA) contents, and the expression of genes related to the magnetosensory complex and reactive oxygen species (ROS) of workers exposed to near-null magnetic fields (NNMF, ~40 nT) and GMF (~42 µT). NNMF affected workers’ orientation by increasing the time needed to find the food source and return to the nest. Moreover, under NNMF conditions, a general drop in BAs, but not melatonin, suggested that the lower foraging performance might be correlated to a decrease in locomotory and chemical perception abilities, potentially driven by dopaminergic and serotoninergic regulations, respectively. The variation in the regulation of genes related to the magnetosensory complex in NNMF shed light on the mechanism of ant GMF perception. Overall, our work provides evidence that the GMF, along with chemical and visual cues, is necessary for the L. niger orientation process.
Utilizing Satellite Data to Establish Rainfall Intensity-Duration-Frequency Curves for Major Cities in Iraq

This study generates intensity-duration-frequency curves for three important cities in Iraq using Global Precipitation Measurement Integrated Multi-Satellite Retrievals for Global Precipitation Measurement (IMERG), Global Satellite Mapping of Precipitation near real-time (GSMaP NRT), and gauge corrected (GSMaP GC) satellite precipitation datasets. Many probability distribution functions were used to fit the maximum yearly rainfall data. The Sherman equation was used to create intensity-duration-frequency (IDF) curves for rainfall intensities with 2-, 5-, 10-, 25-, 50-, and 100-year return periods, with the estimated coefficients of the best-fit distribution serving as the fitting parameters. The discrepancy between the IDF curves produced from the satellites and the observed data was used to bias correct the satellite IDF curves. The Generalized Extreme Value Distribution model best describes the hourly rainfall distribution of satellite data. GSMaP GC was the best option for creating IDF curves with higher correlations with observed data at Baghdad, Basra, and Mosul. The study indicates the necessity of gauge correction of satellite rainfall data to reduce under- and over-estimating observed rainfall. GSMaP GC can reasonably estimate rainfall in a predominantly arid climate region like Iraq. The generated IDF curves may be an important step toward achieving sustainable urban stormwater management in the country.
Observability analysis of strapdown inertial navigation system using Lyapunov transformation

In this paper, the observability and the degree of observability for stationary SDINS error are analyzed. The use of the Lyapunov transformation is proposed for transforming the conventional SDINS error model and the sufficient conditions for the observability of SDINS error model are analytically derived. A complete characterization for the degree of observability during two position alignments is presented which allows us to predict the performance of two position alignments in SDINS.
Knowledge and Awareness of Parents Attending Pediatric Clinic Regarding Pediatric Obstructive Sleep Apnea in Jeddah: A Cross-Sectional Study

Background: Obstructive sleep apnea (OSA) is characterized by chronic, recurrent episodes of partial or complete airway obstruction during sleep. It has a negative impact on quality of life and behavior and can lead to adverse neurological and cardiovascular outcomes if left untreated. This study aims to assess the awareness and knowledge of pediatric OSA among parents attending a general pediatric clinic in Jeddah, Saudi Arabia. Methods: An observational cross-sectional study was conducted from October 2022 to December 2022, on parents who attended the pediatric clinic at Dr. Soliman Fakeeh Hospital in Jeddah. Participants were asked to complete a self-administered questionnaire, either using a tablet or a paper-based survey. The questionnaire consisted of sociodemographic information and questions assessing the parents' knowledge and awareness of pediatric OSA. Results: The study included 146 participants. The mean knowledge score was 15.38 ± 6. Only 20% of the participants had a good knowledge level, while 80% had a poor level of knowledge. Furthermore, regarding the definition of OSA, 60 out of 146 participants answered correctly. Enlargement of adenoids was the most recognized risk factor, and restless sleep was the most recognized symptom. The majority of participants agreed that consulting an expert doctor was the best method to raise awareness about childhood OSA. Conclusion: The result of our study reveals the low level of awareness and knowledge of pediatric OSA among parents attending a pediatric clinic in Jeddah. This highlights the need for health education programs and sensitization campaigns to improve awareness of pediatric obstructive sleep apnea.
Predicting the unexpected total fertilization failure in conventional in vitro fertilization cycles: What is the role of semen quality?

Background: Male and female gametes factors might contribute to the total fertilization failure (TFF). In first in vitro fertilization (IVF) cycles, decision-making of insemination protocol was mainly based on semen quality for the contribution of female clinical characteristics to TFF remained obscure. The purpose of the study was to evaluate the role of semen quality in predicting unexpected TFF. Methods: A single-center retrospective cohort analysis was performed on 19539 cycles between 2013 and 2021. Two algorithms, a Least Absolute Shrinkage and Selection Operator (LASSO) and an Extreme Gradient Boosting (Xgboost) were used to create models with cycle characteristics parameters. By including semen parameters or not, the contribution of semen parameters to the performance of the models was evaluated. The area under the curve (AUC), the calibration, and the net reclassification index (NRI) were used to evaluate the performance of the models. Results: The prevalence of TFF were . 07 (95%CI:0.07-0.08), and . 08 (95%CI:0.07-0.09) respectively in the development and validation group. Including all characteristics, with the models of LASSO and Xgboost, TFF was predicted with the AUCs of . 74 (95%CI:0.72-0.77) and . 75 (95%CI:0.72-0.77) in the validation group. The AUCs with models of LASSO and Xgboost without semen parameters were . 72 (95%CI:0.69-0.74) and . 73 (95%CI:0.7-0.75). The models of LASSO and Xgboost with semen parameters only gave the AUCs of . 58 (95%CI:0.55-0.61) and . 57 (95%CI:0.55-0.6). For the overall validation cohort, the event NRI values were −5.20 for the LASSO model and −. 71 for the Xgboost while the non-event NRI values were 10.40 for LASSO model and 0.64 for Xgboost. In the subgroup of poor responders, the prevalence was . 21 (95%CI:0.18-0.24). With refitted models of LASSO and Xgboost, the AUCs were . 72 (95%CI:0.67-0.77) and . 69 (95%CI:0.65-0.74) respectively. Conclusion: In unselected patients, semen parameters contribute to limited value in predicting TFF. However, oocyte yield is an important predictor for TFF and the prevalence of TFF in poor responders was high. Because reasonable predicting power for TFF could be achieved in poor responders, it may warrant further study to prevent TFF in these patients.
Effects of Clostridium butyricum as an Antibiotic Alternative on Growth Performance, Intestinal Morphology, Serum Biochemical Response, and Immunity of Broilers

The current study aimed to investigate the effects of Clostridium butyiricum on growth performance, intestinal morphology, serum biochemical response, and immunity in broiler chickens. A total of 330 commercial one-day-old, mixed-sex Ross 308 broilers were randomly divided into five treatment groups with six replicates per group. The broilers were fed the basal diet (CON), the basal diet with 150 mg/kg of aureomycin (AM), the basal diet with C. butyricum at 2 × 108 CFU/kg (CBL), the basal diet with C. butyricum at 4 × 108 CFU/kg (CBM), and the basal diet with C. butyricum at 8 × 108 CFU/kg (CBH). Results showed that the final body weight (BW) (p < 0.01; p < 0.05), ADG from day 22 to 39 (p < 0.05), and ADG from day 1 to 39 (p < 0.01; p < 0.05) were improved in a linear and quadratic response with the inclusion of C. butyricum. There were no differences in feed conversion rate (FCR) among all groups (p > 0.05). Supplementation with C. butyricum quadratically reduced the crypt depth at day 21 (p < 0.01), linearly improved the villus height in the jejunum at day 39 (p < 0.001), and linearly and quadratically increased the villus height to crypt depth (V/C) ratio in the jejunum at day 21 (p < 0.01) and day 39 (p < 0.01; p < 0.001). Dietary C. butyricum affected the thymus index at day 21 and day 39 (linear, p < 0.01), and the bursa of Fabricius index at day 39 (quadratic, p < 0.05). Compared to the AM group, the serum urea contents were decreased (p < 0.05) but the IgG contents were increased in the CBL and CBH groups at day 21 (p < 0.01); in addition, serum albumin (ALB) concentrations in all the C. butyricum-supplemented groups (p < 0.01) and IgG concentrations in the CBM group were augmented at day 39 (p < 0.05). In conclusion, dietary C. butyricum could enhance growth performance by improving jejunal morphology and stimulating immunity organ development in broilers, and could be an alternative to antibiotics in poultry feeds.
On the relation of near‐wall streamwise vortices to wall skin friction in turbulent boundary layers

Databases from direct numerical simulations of fully developed turbulent channel flow were used to examine the relation between skin‐friction on the wall and streamwise vortices observed near the wall. It is shown that the wall shear rate correlates with streamwise vortices near the wall and that the maximum correlation occurs downstream and with lateral displacement from the location of skin‐friction measurement. Conditionally‐averaged statistics taken near high skin‐friction regions indicate that the higher skin‐friction values are associated with streamwise vortices located closer to the wall. Visual studies of the time evolution of near‐wall streamwise vortices and skin‐friction on the wall also indicate that the high skin‐friction footprints on the wall can be attributed to streamwise vortices.
ScAlN Film-Based Piezoelectric Micromechanical Ultrasonic Transducers with Dual-Ring Structure for Distance Sensing

Piezoelectric micromechanical ultrasonic transducers (pMUTs) are new types of distance sensors with great potential for applications in automotive, unmanned aerial vehicle, robotics, and smart homes. However, previously reported pMUTs are limited by a short sensing distance due to lower output sound pressure. In this work, a pMUT with a special dual-ring structure based on scandium-doped aluminum nitride (ScAlN) is proposed. The combination of a dual-ring structure with pinned boundary conditions and a high piezoelectric performance ScAlN film allows the pMUT to achieve a large dynamic displacement of 2.87 μm/V and a high electromechanical coupling coefficient (kt2) of 8.92%. The results of ranging experiments show that a single pMUT achieves a distance sensing of 6 m at a resonant frequency of 91 kHz, the farthest distance sensing registered to date. This pMUT provides surprisingly fertile ground for various distance sensing applications.
On the Mathematical Theory of Woodwind Finger Holes

The acoustical effects of open and closed finger holes on woodwind bores in the lower two playing registers are investigated in a mathematical formulation which permits a coherent and comprehensive understanding of the interaction of holes with the bore of a woodwind. Results are expressed in a way which permits accurate engineering calculation of all effects which are discussed. It is shown that when the holes are closed at their outer ends, the system is simply and accurately representable by an adaptation of standard transmission line theory for a tube with side branches. Interestingly, this representation is only possible for musically usable hole sizes and spacings. A related formulation is also possible for a sequence of open finger holes: once again the accuracy of the formulation is greatest for musically usable holes. The part of a woodwind bore that is provided with closed side holes functions as a low‐pass filter. Similarly the open holes lower down on the bore function as a high‐pass filter. The positions of both cutoff frequencies depend end critically upon the hole sizes and spacings. Both fall at frequencies which allow them to play a role in the tune production. Methods are given for calculating “end corrections” for bores with some open and some closed holes as well as for bores with perturbations to the bore cross section. The effects of “misplaced” or “mis‐sized” holes are investigated by these methods, and the position of the lowest open hole calculated. An estimate of the errors in these calculations shows them to be essentially exact for musical purposes. The radiation behavior of a row of open finger holes is analyzed. Frequencies below the “cutoff” of the open hole system are radiated essentially isotropically, while each of the higher components is emitted with its own pattern, all of which are roughly conical, in analogy with the shock wave produced by a supersonic projectile. The musical implications of this are discussed briefly. Light is shed on the function of the bell on woodwind instruments, and on the reason why a bell is not needed on certain of them. The dominant rule of the “closed hole” properties of a bore with finger holes is stressed throughout the paper.
Development and Characterization of Electrospun Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Biopapers Containing Cerium Oxide Nanoparticles for Active Food Packaging Applications

Food quality is mainly affected by oxygen through oxidative reactions and the proliferation of microorganisms, generating changes in its taste, odor, and color. The work presented here describes the generation and further characterization of films with active oxygen scavenging properties made of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) loaded with cerium oxide nanoparticles (CeO2NPs) obtained by electrospinning coupled to a subsequent annealing process, which could be used as coating or interlayer in a multilayer concept for food packaging applications. The aim of this work is to explore the capacities of these novel biopolymeric composites in terms of O2 scavenging capacity, as well as antioxidant, antimicrobial, barrier, thermal, and mechanical properties. To obtain such biopapers, different ratios of CeO2NPs were incorporated into a PHBV solution with hexadecyltrimethylammonium bromide (CTAB) as a surfactant. The produced films were analyzed in terms of antioxidant, thermal, antioxidant, antimicrobial, optical, morphological and barrier properties, and oxygen scavenging activity. According to the results, the nanofiller showed some reduction of the thermal stability of the biopolyester but exhibited antimicrobial and antioxidant properties. In terms of passive barrier properties, the CeO2NPs decreased the permeability to water vapor but increased the limonene and oxygen permeability of the biopolymer matrix slightly. Nevertheless, the oxygen scavenging activity of the nanocomposites showed significant results and improved further by incorporating the surfactant CTAB. The PHBV nanocomposite biopapers developed in this study appear as very interesting constituents for the potential design of new active organic recyclable packaging materials.