Miracle-dz/UniFAR-FTUs huggingface dataset:
Two-level stochastic fluid tandem queuing model for burst impact analysis

Queuing analysis is important in providing guiding principles for packet network analysis. Stochastic fluid queueing models have been widely used as burst scale models for high speed communication networks. In this paper, we propose a novel two-level Markov on-off source model to model the burstiness of a packet stream at different time scales. Analytical results are obtained to reveal the impact of traffic burstiness at two levels on the queue lengths in a tandem queue system. Our method combines the modeling power of the Poisson processes with that of stochastic differential equations to handle the complex interactions between the packet arrivals and the queue content. Our results for the tandem queuing network could be used to further justify the packet spacing scheme in helping deploying small buffer routers.
The Richardson Extrapolation Process with a Harmonic Sequence of Collocation Points

Let $A(y)\sim A+\sum^\infty_{k=1}\alpha_ky^{\sigma_k}$ as $y\rightarrow 0+$, where y is a discrete or continuous variable. Assume that $\sigma_k$ are known numbers that may be complex in general and that A(y,) is known for $y\in(0,b]$ for some b>0. The aim is to find or approximate A, the limit or antilimit of A(y) as $y\rightarrow0+$. One very effective way of approximating A is by the Richardson extrapolation process that is defined via the linear systems $A(y_l)=A^{(j)}_n + \sum^n_{k=1} \overline{\alpha}_ky^{\sigma_k}_l, \ j\leq l\leq j+n$. Here $A^{(j)}_n$ are approximations to A and $\overline{\alpha}_k$ are additional unknowns. The yl are picked such that y0> y1 > y2 > . > 0 and $\lim_{l\rightarrow \infty} y_l = 0$. In this paper we give a detailed analysis of the convergence and stability of the column sequences ${\{A^{(j)}_n\}}^\infty_{j=0}$ with n fixed, when $y_l=c/(l+\eta)^q$ for some positive c, $\eta$, and q. Specifically, we prove that convergence takes place as $j\to\infty$ and give the precise rate at which it does. We also prove that the process is unstable and quantify its instability asymptotically. This instability may be dealt with numerically by using high-precision floating-point arithmetic.
A two stage single trial P300 detection algorithm based on independent component analysis and wavelet transforms

Recently single trial classification of Event Related Potentials (ERPs) has received much attention to improve Brain Computer Interface (BCI) systems. BCI is one of the most recent fields in computer science which tries to help handicapped people; however, single trial EEG analysis is hard due to its low Signal to Noise Ratio (SNR). Many BCI systems are based on the analysis of ERPs such as P300. P300 is a positive peak that occurs approximately 300ms after a visual stimulus. But electrical potentials produced by blinks and eye movements cause serious problems in analyzing of EEG data. In this paper, a two stage algorithm is presented to detect P300 waves in single trial conditions in the presence of noise and artifact. In the first stage, the raw EEG data are denoised. For this reason, an ICA-wavelet based denoising method is proposed to automatically remove ocular artifact and it is also compared to other denoising methods. In the second stage, a detection algorithm is applied on denoised EEG data in order to discover P300 waves. In this method, a set of new features are extracted by applying ICA on each unknown incoming signal and finally they are classified using a neural network. The proposed method has been tested on more than 10 runs and an average accuracy of 71.5% in these runs is achieved in detecting P300 waves.
Efficient Implementation of Wireless Applications on Multi-core Platforms Based on Dynamically Reconfigurable Processors

Wireless internet access technologies such as WiMAX have significant market potential. The high demand for embedded high performance WiMAX solutions is forcing designers to seek multi-core systems which offer competitive advantages in terms of all performance metrics. By providing the flexibility of a DSP with performance and power consumption approaching that of an ASIC, emerging dynamically reconfigurable processors are proving to be stronger candidates than conventional general-purpose processors or DSPs for future multi-core systems. This paper presents several multi-core solutions, based on newly emerging dynamically reconfigurable processor cores targeting WiMAX based applications. Coming with a SystemC trace-driven multi-core simulator, a simulation platform has been proposed in order to explore and implement various multi-core solutions combining different task partitioning strategies and inter-process communication methods.
The effects of bilingualism on stuttering during late childhood

Objectives: To examine stuttering by children speaking an alternative language exclusively (LE) or with English (BIL) and to study onset of stuttering, school performance and recovery rate relative to monolingual speakers who stutter (MONO). Design: Clinical referral sample with supplementary data obtained from speech recordings and interviews. Setting: South-East England, 1999–2007. Participants: Children aged 8–12 plus who stuttered (monolingual and bilingual) and fluent bilingual controls (FB). Main outcome measures: Participants’ stuttering history, SATS scores, measures of recovery or persistence of stuttering. Results: 69 (21.8%) of 317 children were bilingual. Of 38 children who used a language other than English at home, 36 (94.7%) stuttered in both languages. Fewer LE (15/38, 39.5%) than BIL (23/38, 60.5%) children stuttered at first referral to clinic, but more children in the fluent control sample were LE (28/38, 73.7%) than BIL (10/38, 26.3%). The association between stuttering and bilingual group (LE/BIL) was significant by χ2 test; BIL speakers have more chance of stuttering than LE speakers. Age at stuttering onset and male/female ratio for LE, BIL and MONO speakers were similar (4 years 9 months, 4 years 10 months and 4 years 3 months, and 4.1:1, 4.75:1 and 4.43:1, respectively). Educational achievement was not affected by bilingualism relative to the MONO and FB groups. The recovery rate for the LE and MONO controls together (55%) was significantly higher by χ2 test than for the BIL group (25%). Conclusions: BIL children had an increased risk of stuttering and a lower chance of recovery from stuttering than LE and MONO speakers.
Dry Eye Syndrome in Diabetic Children

Purpose To compare the symptoms, signs, and results of objective tests for dry eye syndrome (DES) in type 1 diabetes mellitus (T1DM) patients and controls. Methods A total of 104 children with T1DM and 104 age- and sex-matched controls were compared in terms of the symptoms, signs, and results of objective tests for DES. Duration of T1DM, presence of diabetic retinopathy, mean hemoglobin A1c level, pubertal status, and a history of accompanying autoimmune disease were noted in T1DM group. Analysis of variance, multivariate regression analysis, Student t, Mann-Whitney U, and chi-square tests were used for statistical analysis. Results A total of 15.4% of diabetic children complained of dry eye symptoms, versus 1.9% of the controls (p=0.029). Dry eye signs were detected in 7.7% of diabetic children, versus 0.96% of controls (p=0.034). Tear break-up time (TBUT) and Schirmer test results were significantly lower in T1DM group than controls (p=0.018, p=0.024, respectively). A total of 7.7% of diabetic children had definite and 0.96% had probable diagnosis of DES, versus none of the controls (p=0.03). TBUT and Schirmer test results were significantly lower in patients with more than 10 years duration of T1DM (p<0.001 for both). Conclusions The prevalence of symptoms, signs, and definite diagnosis of DES are higher and basal tear secretion and tear film stability are lower in diabetic children than controls. Duration of T1DM is the only disease-related variable which is associated with basal tear secretion and tear film stability.
The emotional antecedents to the evolution of music and language

The emotional power of music may have strong linkages to the evolution of basic motor and emotional systems of the brain. Most movements have distinct rhythms and basic emotions are characterised by distinct affective sounds in all mammalian species, and these sounds may have been critically important pre-adaptations for the emergence of the melodic stream of music in humans. If so, the social emotions (playful joy, sadness, maternal care, sexual lust, and territorial/dominance imperatives) surely had more influence than the non-social, self-preservative emotions such as anger and fear, providing a substrate for harmony and discord. For instance, our capacity for separation-distress (substrate for primary-process sadness) may prepare the brain for chill-thrill reaction to aesthetic renditions of grief, providing one robust link to social-biologic foundations of music. Emotion mediating subcortical regions are robustly aroused in humans listening to especially moving musical selections such as those that provoke chills. Indeed, it is possible that the communicative intent integral to social emotional vocalizations, and gradual utilization and musical reutilization of such communications in group-activities, prepared the way for the emergence of linguistic competence within largely general-purpose association cortex. From this perspective, there may be no “music instinct” nor “language instinct” evolutionarily programmed into the higher reaches of the neocortex — our preeminent organ of cognitive intelligence — that is developmentally independent of our emotional urges. The evolutionary infrastructure for music may be largely subcortical, and the emergence of emotional proto-musical communications in our species (e.g., motherese) may have set the stage not only for the eventual discovery of music but also for the emergence of propositional language.
What’s wrong with giftedness? Parents’ perceptions of the gifted label

The label ‘gifted’ has been a source of contention for decades, possibly because it seems to imply a desirable status that is mysteriously granted to some yet remains unavailable to others. Some writers have suggested that the term should be abandoned altogether, though a replacement that retains the same utility for classification purposes and delivery of services remains elusive. We asked 106 parents of gifted learners about their usage of the term ‘gifted’ to learn more about when they perceive the term to be useful and when or why they avoid using it. The majority of respondents reported avoiding the use of the gifted label in conversations with others who were not labelled. Findings suggest that these parents felt they or their children would be judged negatively by others if the parents used the term ‘gifted’, and that in many cases, they used alternate language or (for twice-exceptional children) gave priority to describing their child’s disability. Respondents who did choose to use the term framed their decision in terms of a need to educate other parents about giftedness as an important aspect of individual differences.
The prevalence of ocular defects and the provision of eye care in adults with learning disabilities living in the community

Most people with learning disabilities now live in the community rather than in institutions, and community services need to be targeted appropriately. Vision screening was carried out in community Day Care Centres for adults with learning disabilities. One hundred and fifty four subjects took part, and screening was successful in 148 subjects, using retinoscopy and standard acuity tests, including preferential looking.
Suppression of emotional Stroop effects by fear-arousal.

Abstract Previous studies have suggested that subjects are slower to colour-name emotional words, when the meaning of these words is related to a fear or current concern. We carried out three experiments on subjects having either high or low fear of snakes, with the aim of replicating this finding, and of testing the effects of arousing fear in subjects at the same time. Unexpectedly, we could only replicate the predicted interference effect in the absence of threat, whether due to a snake or to another threatening stimulus. We conclude that emotional interference effects do depend on high levels of fearfulness or trait anxiety, and on a match between the content of the subjects' concerns and the meaning of the interfering material. However, this interference may be paradoxically obscured by fear arousal, or the presence of a real danger that alters processing priorities in highly fearful subjects.
High-speed gallop locomotion in the Thoroughbred racehorse. II. The effect of incline on centre of mass movement and mechanical energy fluctuation

SUMMARY During locomotion on an incline, mechanical work is performed to move an animal up the slope and increase the potential energy (PE) of the trunk and hence the centre of mass (CoM). Thus, at a given speed the total net mechanical work increases with the PE of the animal. In this study we investigate the mechanical energy (ME) fluctuations and the mechanical cost of transport (MCT) in six horses galloping up a range of gradients. We captured trunk movement with a six degrees-of-freedom inertial sensor mounted over the dorsal spinous process of the fourth to sixth thoracic vertebrae of the horse. Footfall timings were measured using a previously validated system of limb-mounted accelerometers. Speed was measured using a Global Positioning System (GPS) data logger. A track survey provided detailed incline information for the track. Linear (craniocaudal, mediolateral and dorsoventral) and rotational (roll, pitch and heading) kinematic parameters (displacement, velocity and acceleration) were calculated at speeds ranging from 9.0 to 12.0 m s–1 during routine training over a range of inclines. Estimates of ME fluctuations and the MCT were made. Results showed the effect of incline on trunk motion during galloping was small. Increases in linear mechanical work and MCT were primarily explained by an increase in the work required to move the animal up the slope (and increase the PE of the CoM). Within the stride the majority of the work was performed during hindlimb stance. Our results have provided new insights into how horses power uphill locomotion.
New Faculty as Teachers.

In the midst of growing concerns for college teaching [1] we produce more and more useful advice about ways to improve instruction [8]. Yet, we know almost nothing about how (and how quickly) professors establish their teaching styles. And, it follows, we too rarely consider strategies for dealing with their teaching in its formative stages. This article depicts the experience of new faculty as teachers over periods of one and two years and across two large campuses. It shows a surprisingly slow pattern of establishing comfort and student approval, of moving beyond defensive strategies including overpreparation of lecture content, and of looking for supports in improving teaching. The few prior efforts at observing new faculty have been enlightening but limited to smaller groups, to fewer observations, or to nonteaching activities [3, 5, 6]. The aim of this study, though, is not simply to document the teaching experiences of new faculty but to answer four related questions. First, do initial teaching patterns, adaptive and maladaptive, tend to persist? Second, what can we learn from the experiences of new faculty who master teaching quickly and enjoyably? Third, how does success in teaching correspond to prowess in areas including the establishment of collegial supports and of outputs in scholarly writing? And, fourth, how do initial teaching experiences compare at a "teaching" (comprehensive) and at a "research" (doctoral) campus?
The effect of etanercept on work productivity in patients with early active rheumatoid arthritis: results from the COMET study.

OBJECTIVES To compare the impact of the combination of etanercept (ETN) and MTX with MTX alone on work productivity among MTX-naïve patients with active early RA over a 12-month period. METHODS The COMET (COmbination of Methotrexate and ETanercept) trial was a 2-year double-blind randomized clinical trial. Absenteeism during the first year was measured and it included: (i) number of missed workdays; (ii) reduced working time; and (iii) number of stopped workdays. Each absenteeism measure was estimated using a mixed model, and their variations were estimated by bootstrapping. As a sensitivity analysis, the lost workdays due to presenteeism (reduced performance at work) was also estimated. RESULTS Two hundred and five patients [MTX (n = 100) vs ETN + MTX (n = 105)], who were working full time or part time at baseline and had at least one follow-up observation, were included in the analysis. Compared with the MTX group, the ETN + MTX group had a maximum of 37 fewer missed workdays or at minimum 22 fewer missed workdays. The associated productivity gain equalled 2586 pounds and 1555 pounds, respectively. When additionally accounting for presenteeism, the total improvement could be as high as 42 (95% CI 16, 69) fewer lost workdays representing a productivity gain of 2968 pounds. CONCLUSIONS Our results demonstrated that early treatment with ETN + MTX led to a significant attenuation of absenteeism among patients with early active RA. These productivity gains represent benefit beyond the traditional measures of clinical and radiographic improvements. Further research to simultaneously measure both absenteeism and presenteeism is warranted.
LH and hCG Action on the Same Receptor Results in Quantitatively and Qualitatively Different Intracellular Signalling

Human luteinizing hormone (hLH) and chorionic gonadotropin (hCG) act on the same receptor (LHCGR) but it is not known whether they elicit the same cellular and molecular response. This study compares for the first time the activation of cell-signalling pathways and gene expression in response to hLH and hCG. Using recombinant hLH and recombinant hCG we evaluated the kinetics of cAMP production in COS-7 and hGL5 cells permanently expressing LHCGR (COS-7/LHCGR, hGL5/LHCGR), as well as cAMP, ERK1/2, AKT activation and progesterone production in primary human granulosa cells (hGLC). The expression of selected target genes was measured in the presence or absence of ERK- or AKT-pathways inhibitors. In COS-7/LHCGR cells, hCG is 5-fold more potent than hLH (cAMP ED50: 107.1±14.3 pM and 530.0±51.2 pM, respectively). hLH maximal effect was significantly faster (10 minutes by hLH; 1 hour by hCG). In hGLC continuous exposure to equipotent doses of gonadotropins up to 36 hours revealed that intracellular cAMP production is oscillating and significantly higher by hCG versus hLH. Conversely, phospho-ERK1/2 and -AKT activation was more potent and sustained by hLH versus hCG. ERK1/2 and AKT inhibition removed the inhibitory effect on NRG1 (neuregulin) expression by hLH but not by hCG; ERK1/2 inhibition significantly increased hLH- but not hCG-stimulated CYP19A1 (aromatase) expression. We conclude that: i) hCG is more potent on cAMP production, while hLH is more potent on ERK and AKT activation; ii) hGLC respond to equipotent, constant hLH or hCG stimulation with a fluctuating cAMP production and progressive progesterone secretion; and iii) the expression of hLH and hCG target genes partly involves the activation of different pathways depending on the ligand. Therefore, the LHCGR is able to differentiate the activity of hLH and hCG.
Planned educational change in Japan: the case of elementary science instruction

Available evidence suggests that Japanese elementary science education has shifted, in recent decades, away from lecture‐style, rote ‘teaching as telling’ toward ‘teaching for understanding’. How has this change been accomplished? Drawing on our ongoing study of innovations in Japanese elementary science instruction, we describe three features of the Japanese system that may facilitate planned change. First, we describe Japan's broad national goals for elementary education and the alignment of textbooks with these goals. We point out that Japan's national goals focus on the whole child (social, ethical and intellectual development), a breadth which, we speculate, may reduce the kind of pendulum swings between goals of academic and social development that have plagued some other countries’ educational policies. In addition, we note that the national goals are abstract and are translated into classroom practice through the collaborative work of teachers. Second, we describe three routes through which the na.
Understanding the (Re)Creation of Routines from Within: A Symbolic Interactionist Perspective

Drawing on symbolic interactionism, we propose a process model for the creation and recreation of routines. Our model extends the performative perspective by exploring how routines, as collective accomplishments, are (re)created from within. In particular, we examine the mutual constitution of routines' constituent parts (performative and ostensive) through interaction, and we develop endogenous explanations of routine (re)creation grounded on the actions and understandings of mutually susceptible participants. Mead's concept of role taking, with its strong emphasis on the relational aspect of agency, enables us to account for the fitting together of individual lines of action (performative) and the sharing of participants' schemata (included in the ostensive) as mutually constituted processes that occur as participants develop distinct selves in the context of a routine. Moreover, we account for the content and structure of the ostensive aspect and propose a conceptualization that does justice to it as a.
Inclusion of pupils perceived as experiencing social and emotional behavioural difficulties (SEBD): affordances and constraints

This paper takes as its principal theme barriers to the inclusion of pupils perceived as experiencing social and emotional behavioural difficulties (SEBD) and how these might be overcome. It draws upon an evaluative case study of an initiative, devised by the author, to support pupils – the Support Group Initiative (SGI) – which was conducted over a five‐year period in a Scottish Secondary School situated in an area of multiple deprivation. The central focus of the discussion is the range of variables that impacted upon pupil outcomes, illustrating the ways in which these variables acted as affordances or constraints in the pursuit of inclusive practice. The paper takes as its starting point the contested nature of inclusion and introduces, briefly, the Scottish policy context as it pertains to inclusion before exploring the nature of the problem – the barriers to the inclusion of and the difficulties presented by the inclusion of pupils perceived as having SEBD, as discussed in the literature. The findings of the study are discussed in relation to central themes – the ethos of the Support Group; the process of re‐signification through which pupils are enabled to effect improvement; the classroom context; and wider variables relating to school policy, practice, ethos and the management of change. The paper concludes by exploring what inclusion has meant to the pupils involved within the intervention, summarising the affordances and constraints to its realisation, before reflecting upon the significance of the study.