Miracle-dz/UniFAR-FTUs huggingface dataset:
Whites for racial justice: How contact with Black Americans predicts support for collective action among White Americans

Advantaged group members have an important role to play in creating social change, and intergroup contact has tremendous implications in shaping intergroup relations. However, little research has examined how intergroup contact predicts advantaged group members’ inclinations toward collective action to support the interests of disadvantaged groups. The present research investigates how contact with Black Americans shapes White Americans’ willingness to engage in collective action for racial justice and support for the Black Lives Matter movement. Three studies of White Americans (total N = 821) consistently reveal that positive contact with Black Americans predicts greater support for collective action through a sequential process of fostering greater feelings of empathy for Black Americans and anger over injustice. These findings hold even when taking into account other relevant psychological factors (i.e., White guilt and identification, negative contact, group efficacy, and moral convictions). The present research contributes to our understanding of how advantaged group members come to engage in social change efforts.
‫املتوسط‬ ‫لرشق‬ ‫الصحية‬ ‫املجلة‬ ‫عرش‬ ‫الثامن‬ ‫املجلد‬ ‫الثالث‬ ‫العدد‬ Iron Deficiency in Yemeni Patients with Sickle-cell Disease ‫املنجلية‬ ‫اخلاليا‬ ‫بمرض‬ ‫املصابني‬ ‫اليمنيني‬ ‫يف‬ ‫احلديد‬ ‫عوز‬

Despite the general view that patients with sickle-cell disease (SCD) have iron overload, there are reports of iron deficiency in a proportion of these patients. We studied Yemeni patients aged 1–30 years with homozygous SCD to determine their iron status using a set of 4 criteria (low serum iron, low transferrin saturation, high total iron binding capacity and low mean corpuscular volume for age). Of the 75 patients, 44 had never been transfused while 31 patients had received blood transfusions but not during the 3-month period prior to the study. Of the patients, 10 (13.3%) met the criteria for iron deficiency, 9 of whom were from the non-transfused patients (20.5%). The sensitivity and specificity were 40% and 98% respectively for reticulocyte count and 80% and 90% respectively for reticulocyte index. We recommend screening non-transfused SCD patients for iron deficiency.
Phonotactic Language Recognition using i-vectors and Phoneme Posteriogram Counts

This paper describes a novel approach to phonotactic LID, where instead of using soft-counts based on phoneme lattices, we use posteriogram to obtain n-gram counts. The high-dimensional vectors of counts are reduced to low-dimensional units for which we adapted the commonly used term i-vectors. The reduction is based on multinomial subspace modeling and is designed to work in the total-variability space. The proposed technique was tested on the NIST 2009 LRE set with better results to a system based on using soft-counts (Cavg on 30s: 3.15% vs 3.43%), and with very good results when fused with an acoustic i-vector LID system (Cavg on 30s acoustic 2.4% vs 1.25%). The proposed technique is also compared with another low dimensional projection system based on PCA. In comparison with the original soft-counts, the proposed technique provides better results, reduces the problems due to sparse counts, and avoids the process of using pruning techniques when creating the lattices.
The Approach of Turbulence to the Locally Homogeneous Asymptote as Studied using Exact Structure-Function Equations

Equations that follow from the Navier-Stokes equation and incompressibility but with no other approximations are called "exact" here. Exact equations relating 2nd and 3rd-order structure functions are obtained, as is an exact incompressibility condition on the 2nd-order velocity structure function. Ensemble, temporal, and spatial averages are all considered because they produce different statistical equations. Exact equations have particularly simple forms for the cases of an average over a sphere in r-space as well as DNS that has periodic boundary conditions. The trace mitigates the effect of anisotropy in the equations, thereby revealing that the trace of the third-order structure function is expected to be superior for quantifying asymptotic scaling laws. The midpoint and the difference of the two points at which the hydrodynamic quantities are obtained are X and r; t is time. Dependencies on X and on the orientation of r and on t fade as the asymptotic statistical states of local homogeneity, local isotropy, and local stationarity, respectively, are approached. The exact equations are thus applicable to study of the approach toward those asymptotic states. A new definition of local homogeneity is contrasted with previous definitions. The approach toward the asymptotic state of local homogeneity is studied by using scale analysis to determine the required approximations and the approximate equations pertaining to experiments and simulations of the small-scale structure of high-Reynolds-number turbulence, but without invoking local isotropy. Those equations differ from equations for homogeneous turbulence.
Herbal Extract SH003 Suppresses Tumor Growth and Metastasis of MDA-MB-231 Breast Cancer Cells by Inhibiting STAT3-IL-6 Signaling

Cancer inflammation promotes cancer progression, resulting in a high risk of cancer. Here, we demonstrate that our new herbal extract, SH003, suppresses both tumor growth and metastasis of MDA-MB-231 breast cancer cells via inhibiting STAT3-IL-6 signaling path. Our new herbal formula, SH003, mixed extract from Astragalus membranaceus, Angelica gigas, and Trichosanthes kirilowii Maximowicz, suppressed MDA-MB-231 tumor growth and lung metastasis in vivo and reduced the viability and metastatic abilities of MDA-MB-231 cells in vitro. Furthermore, SH003 inhibited STAT3 activation, which resulted in a reduction of IL-6 production. Therefore, we conclude that SH003 suppresses highly metastatic breast cancer growth and metastasis by inhibiting STAT3-IL-6 signaling path.
An Observational Study of Classroom Acoustical Design and Repetitive Behaviors in Children With Autism

The objective of the present study is to explore the impact of acoustical design on children with autism in school classrooms. Empirical research on this topic will provide information on how interior space features and spatial environment characteristics can be used to support the learning and developmental needs of children with autism. Specifically, the connection between repetitive behaviors and ambient noise levels in school classroom environments was observed in four classrooms. The occurrence of repetitive motor movements, repetitive speech, ear covering, hitting, loud vocalizations, blinking, and verbally complaining in relation to decibel levels were analyzed using Noldus Observer XT software. As hypothesized, a correlation between noise levels and frequency of target behaviors was found; that is, as decibel levels increased, several of the observed behaviors occurred with greater frequency. Further empirical testing is necessary to test a causal relationship between increased ambient noise levels and autism-related behaviors, and sensory discomfort as a mediator of that relationship. Findings are applied to the development of classroom design guidelines.
Comparative Genomic Analyses of Multiple Pseudomonas Strains Infecting Corylus avellana Trees Reveal the Occurrence of Two Genetic Clusters with Both Common and Distinctive Virulence and Fitness Traits

The European hazelnut (Corylus avellana) is threatened in Europe by several pseudomonads which cause symptoms ranging from twig dieback to tree death. A comparison of the draft genomes of nine Pseudomonas strains isolated from symptomatic C. avellana trees was performed to identify common and distinctive genomic traits. The thorough assessment of genetic relationships among the strains revealed two clearly distinct clusters: P. avellanae and P. syringae. The latter including the pathovars avellanae, coryli and syringae. Between these two clusters, no recombination event was found. A genomic island of approximately 20 kb, containing the hrp/hrc type III secretion system gene cluster, was found to be present without any genomic difference in all nine pseudomonads. The type III secretion system effector repertoires were remarkably different in the two groups, with P. avellanae showing a higher number of effectors. Homologue genes of the antimetabolite mangotoxin and ice nucleation activity clusters were found solely in all P. syringae pathovar strains, whereas the siderophore yersiniabactin was only present in P. avellanae. All nine strains have genes coding for pectic enzymes and sucrose metabolism. By contrast, they do not have genes coding for indolacetic acid and anti-insect toxin. Collectively, this study reveals that genomically different Pseudomonas can converge on the same host plant by suppressing the host defence mechanisms with the use of different virulence weapons. The integration into their genomes of a horizontally acquired genomic island could play a fundamental role in their evolution, perhaps giving them the ability to exploit new ecological niches.
Motor and coordination difficulties in children with emotional and behavioural difficulties

ABSTRACT To date, very few studies have explored the incidence of motor impairment amongst children with social, emotional and behavioural difficulties (social, emotional and mental health (SEMH); formerly SEBD in England). Following research that suggests an increase in motor difficulties in young children and adolescents with SEMH difficulties, this study compares profiles of motor ability using the Movement ABC-2 assessment in children attending a specialist SEMH primary school with a typically developing comparison group and children with a diagnosis of developmental coordination disorder. We report an increased prevalence of borderline or clinically significant motor impairment amongst children with SEMH difficulties compared to the comparison group, with 44% of the SEMH special school sample falling within these ranges. We suggest that bearing in mind the increased likelihood for motor impairment is important in SEMH education, as it has likely impact on classroom functioning and ability and motivation to take part in socially and academically relevant activities.
Circuits of Power in Practice: Strategic Ambiguity as Delegation of Authority

Most power relationships between organizations and stakeholders are episodic circuits of power whereby resource dependence is exacerbated by prohibitive rules. Such relationships are usually constraining rather than empowering and generate resistance and reluctant compliance rather than co-operation and creativity. Clegg's (1989) concept of facilitative circuits of power, however, suggests that some power relationships, particular where high amounts of discretion are delegated, can result in innovation by stakeholders. Public sector agencies have multiple and diverse external stakeholder groups that they need to influence in order to implement their strategies. In this paper, we explore a facilitative circuit of power using a case study of a public sector research funding organization that employed strategic ambiguity to delegate considerable authority to stakeholders, stimulating a variety of creative responses during a period of major system restructuring. Risks associated with such a practice include the generation of active and passive resistance as well as a propensity for the system to revert to an episodic power circuit over time. Despite these risks, we propose that the deployment of strategic ambiguity is a previously unrecognized mode of high discretionary strategic agency in authority delegation that can generate creative responses on the part of stakeholders within a facilitative circuit of power.
Antagonistic Components of the Late Receptor Potential in the Barnacle Photoreceptor Arising from Different Stages of the Pigment Process

The late receptor potential (LRP) recorded in barnacle photoreceptor cells exhibits, at high light levels, a strong dependence on the color of the stimulus and of the preceding adaptation. Most strikingly, red illumination of a cell previously adapted to blue light results in a depolarization which may last for up to 30 min after the light goes off, while blue illumination of a cell previously adapted to red light cuts short this extended depolarization or prevents its induction by a closely following red light. Comparison of the action spectra for the stimulus-coincident LRP and for the extended depolarization and its curtailment with those previously measured for the early receptor potential (ERP) confirms that these phenomena derive from the same bi-stable pigment as the ERP. The stimulus-coincident response and the extended depolarization appear to arise from substantial activation of the stable 532 nm state of the pigment, while activation of the stable 495 state depresses or prevents the extended depolarization and probably also depresses the stimulus-coincident response. Since either process can precede the other, with mutually antagonistic effects, one is not simply the reversal of the other; they must be based on separate mechanisms. Furthermore, comparison with ERP kinetics shows that both processes involve mechanisms additional to the pigment changes, as seen in the ERP. A model is proposed and discussed for the LRP phenomena and their dependences on wavelength, intensity, and duration of illumination based on excitor-inhibitor interactions.
Helicity Observations of Weak and Strong Fields

We report in this Letter our analysis of a large sample of photospheric vector magnetic field measurements. Our sample consists of 17,200 vector magnetograms obtained from 1997 January to 2004 August by the Huairou Solar Observing Station of the Chinese National Astronomical Observatory. Two physical quantities, α and current helicity, are calculated, and their signs and amplitudes are studied in a search for solar cycle variations. Differently from other studies of the same type, we calculate these quantities for weak (100 G < |Bz| < 500 G) and strong (|Bz| > 1000 G) fields separately. For weak fields, we find that the signs of both α and current helicity are consistent with the established hemispheric rule during most years of the solar cycle and that their magnitudes show a rough tendency of decreasing with the development of the solar cycle. The analysis of strong fields gives an interesting result: both α and current helicity present a sign opposite to that of weak fields. The implications of these observations for dynamo theory and helicity production are also briefly discussed.
Performance of MIMO spatial multiplexing algorithms using indoor channel measurements and models

Department of Electrical and Computer Engineering, Brigham Young University, Provo, UT 84602, U.S.A.SummarySeveral algorithms have recently been proposed for multiplexing multiple users in multiple input multiple output(MIMO) downlinks. The ability of a transmitter to accomplish this using spatial methods is generally dependent onwhether the users’ channels are correlated. Up to this point, most of the multiplexing algorithms have been tested onuncorrelated Gaussian channels, a best-case scenario. In this paper, we examine the performance of multiplexingmultiple users under more realistic channel conditions by using indoor channel measurements and a statisticalmodel for test cases. We use a block zero-forcing algorithm to test performance at various user separation distances,optimizing for both maximum throughput under a power constraint and minimum power under a rate constraint.The results show that for the measured indoor environment (rich scattering, non-line-of-sight), a separation of ﬁvewavelengths is enough to achieve close to the maximum available performance for two users. Since many spatialmultiplexing algorithmsrequirechannel state information(CSI) at the transmitter, we alsoexamine the performanceloss due to CSI error. The results show that a user can move up to one-half wavelength before the original channelmeasurement becomes unusable. Copyright # 2004 John Wiley & Sons, Ltd.KEY WORDS: MIMO systems; multi-user downlink beamforming; multi-user MIMO systems; MIMO channelmodels; MIMO channel measurement; indoor channel models; indoor channel measurement1. IntroductionMultiple input multiple output (MIMO) wireless sys-tems offer the possibility of spatially multiplexingmultiple users, creating an additional dimension formultiple access beyond time-, frequency- and code-division approaches. The uplink of a multi-userMIMO system follows a model for which numerousalgorithms already exist; although non-trivial, thisproblem has been studied (either directly or in-directly) by numerous researchers. Less understoodis the MIMO downlink or ‘multicast’ channel, where amultiple antenna transmitter (e.g. a basestation) at-tempts to send different messages to multiple users,each of which may be equipped with a multipleantenna receiver. If one assumes that all users haveonly one antenna, the problem is somewhat simpliﬁed,and optimal transmitter beamforming solutions exist[1,2], as well as sub-optimal, but simpler solutions [3–5]. When the users have multiple antennas, achieving
Quantifying Program Bias

With the range and sensitivity of algorithmic decisions expanding at a break-neck speed, it is imperative that we aggressively investigate whether programs are biased. We propose a novel probabilistic program analysis technique and apply it to quantifying bias in decision-making programs. Specifically, we (i) present a sound and complete automated verification technique for proving quantitative properties of probabilistic programs; (ii) show that certain notions of bias, recently proposed in the fairness literature, can be phrased as quantitative correctness properties; and (iii) present FairSquare, the first verification tool for quantifying program bias, and evaluate it on a range of decision-making programs.
Intracellular mechanisms responsible for exercise-induced suppression of macrophage antigen presentation.

In a previous study, we demonstrated that exhaustive exercise suppressed peritoneal macrophage antigen presentation (AP). In this study, we explored the intracellular mechanism(s) responsible for this suppression. Pathogen-free male BALB/c mice (8 +/- 2 wk) were randomly assigned to either home cage control (HCC) or exhaustive exercise stress (Exh, 18-30 m/min for 3 h/day) treatment groups. The mice underwent treatments for a period of 4 days during induced peritoneal thioglycollate inflammation. Elicited macrophages were harvested, purified, and incubated with chicken ovalbumin (C-Ova, 2. 5 and 10 mg/ml) for 18 h. After macrophages were washed, they were cocultured with C-Ova-specific T cells for 48 h at which time the supernates were harvested and analyzed via ELISA for interleukin (IL)-2 as an indication of macrophage AP. There was no significant (P > 0.05) difference in macrophage AP between cells fixed with paraformaldehyde vs. those that remained unfixed, suggesting that Exh did not affect production of soluble factors influencing macrophage AP (i.e., IL-1, IL-4, PGE(2)). The ability of macrophages to generate C-Ova immunogenic peptides was analyzed using FITC-labeled C-Ova, which shows fluorescence only when degraded intracellularly. There was a significant ( approximately 20%, P < 0. 05) suppression in fluorescence in the Exh compared with HCC, indicating a possible defect in the ability of macrophages from Exh to degrade C-Ova into immunogenic peptides. Macrophages were also incubated with C-Ova immunogenic peptide in a manner identical to that for native C-Ova. We found a similar suppression ( approximately 22-38%, P < 0.05) in macrophage AP using a C-Ova peptide when compared with native C-Ova in the Exh group, indicating reduced major histocompatibility complex (MHC) II loading and/or C-Ova-MHC II complex cell surface expression. In conclusion, these data indicate an intracellular defect in the macrophage antigen processing pathway induced by Exh.
Assessing the feasibility of screening and providing brief advice for alcohol misuse in general dental practice: a clustered randomised control trial protocol for the DART study

Introduction Alcohol misuse is a significant public health problem with major health, social and economic consequences. Systematic reviews have reported that brief advice interventions delivered in various health service settings can reduce harmful drinking. Although the links between alcohol and oral health are well established and dentists come into contact with large numbers of otherwise healthy patients regularly, no studies have been conducted in the UK to test the feasibility of delivering brief advice about alcohol in general dental settings. Methods and analysis The Dental Alcohol Reduction Trial (DART) aims to assess the feasibility and acceptability of screening for alcohol misuse and delivering brief advice in patients attending National Health Service (NHS) general dental practices in North London. DART is a cluster randomised control feasibility trial and uses a mixed methods approach throughout the development, design, delivery and evaluation of the intervention. It will be conducted in 12 NHS general dental practices across North London and will include dental patients who drink above the recommended guidance, as measured by the Alcohol Use Disorders Identification Test (AUDIT-C) screening tool. The intervention involves 5 min of tailored brief advice delivered by dental practitioners during the patient's appointment. Feasibility and acceptability measures as well as suitability of proposed primary outcomes of alcohol consumption will be assessed. Initial economic evaluation will be undertaken. Recruitment and retention rates as well as acceptability of the study procedures from screening to follow-up will be measured. Ethics and dissemination Ethical approval was obtained from the Camden and Islington Research Ethics Committee. Study outputs will be disseminated via scientific publications, newsletters, reports and conference presentations to a range of professional and patient groups and stakeholders. Based on the results of the trial, recommendations will be made on the conduct of a definitive randomised controlled trial. Trial registration number ISRCTN81193263.
English consonant confusions by Greek listeners in quiet and noise and the role of phonological short-term memory

This study investigated English consonant identification by Greek listeners and the role of phonological short-term memory (PSTM) in listeners’ identification ability. Twenty Greek university students who had received formal instruction in English identified 24 English consonants (embedded in VCV syllables) presented in quiet and in two noise types, a competing talker at a signal-to-noise ratio (SNR) of -6dB and an 8-speaker babble at an SNR of -2dB. Participants’ PSTM was assessed via a serial non-word recognition task in Greek. The results showed that identification scores in quiet were significantly higher than in noise. There was no difference in scores between the two noise conditions. PSTM correlated with English consonant identification in quiet and in the two types of noise; listeners with greater PSTM capacity were also better in identifying English consonants in quiet and noise, a finding that extends previous research in quiet to L2 perception in adverse listening conditions. English consonant confusion patterns are interpreted as caused by a combination of first-language interference (at both the phonetic and phonological levels) and spectral/articulatory factors.