Miracle-dz/UniFAR-FTUs huggingface dataset:
Design of the Millimeter-wave Rectangular Dielectric Resonator Antenna Using a Higher-Order Mode

At millimeter-wave (mm-wave) frequencies, the size of the dielectric resonator antenna (DRA) may be too small to fabricate precisely. To relax the precision problem of fabrication, it is proposed to obtain a larger DRA by designing it with its higher-order mode. In this paper, the rectangular mm-wave slot-fed DRA excited in a higher-order mode is investigated systematically. It is found that when the slot is centrally located beneath the DRA, a TEpqr mode of the DRA can be excited only when all of the indices p, q, r are odd numbers. The aspect ratio of the DRA that gives a single (higher-order) TE11ry -mode operation is found. Like the fundamental TE111 mode, the higher-order TE11r modes have broadside radiation patterns. To validate our results, two DRAs were designed to operate in the higher-order TE115 and TE119 modes. In each case, the reflection coefficient, radiation pattern, and antenna gain are studied, and reasonable agreement between the measured and simulated results is observed. The effect of fabrication error on the frequency shift of the DRA was also studied. A design rule for minimizing the frequency shift is suggested. The results should be useful for practical designs of the mm-wave DRA.
An evaluation of a new pattern of electrical stimulation as a treatment for urinary stress incontinence: a randomized, double-blind, controlled trial

Objective: To evaluate a new pattern of electrical of electrical stimulation as a treatment for stress incontinence. Design: A randomized, double-blind, controlled trial. Setting: The study took place on three clinical sites. Subjects: Patients (n= 27) with urodynamically proven stress incontinence recruited via consultant referral. Interventions: Patients were randomly allocated to one of two groups: the new pattern of stimulation or sham stimulation. Main outcome measures: Patients were assessed pre, mid and post treatment using: perineometry, digital assessment and pad testing. The following were only used pre and post treatment: seven-day frequency/ volume chart, SF-36, the Incontinence Impact Questionnaire and the Urogenital Distress Inventory. Results: No significant between-group differences were highlighted except when quality of life was assessed with the Urogenital Distress Inventory (p= 0.01). A significant reduction in scores was observed in the stimulation group (p= 0.03) However, improvements were seen in both the strength and endurance characteristics of the pelvic floor musculature, although these changes were not translated into a reduction in symptoms. Conclusion: Although promising, the improvement in pelvic floor function did not result in a reduction in symptoms in all patients. Further research is required to investigate the effects of the new stimulation in combination with pelvic floor exercises and to compare the new stimulation pattern with existing forms of electrical stimulation.
Smoothed particle hydrodynamics with radiative transfer in the flux-limited diffusion approximation

We describe the implementation and testing of a smoothed particle hydrodynamics (SPH) code that solves the equations of radiation hydrodynamics in the flux-limited diffusion (FLD) approximation. The SPH equations of radiation hydrodynamics for an explicit integration scheme are derived and tested. We also discuss the implementation of an implicit numerical scheme for solving the radiation equations that allows the system to be evolved using time-steps much longer than the explicit radiation time-step. The code is tested on a variety of one-dimensional radiation hydrodynamics problems including radiation propagating in an optically thin medium, optically thick and thin shocks, subcritical and supercritical radiating shocks, and a radiation dominated shock. Many of the tests were also performed by Turner & Stone to test their implementation of a FLD module for the zeus-2d code. The SPH code performs at least as well as the zeus-2d code in these tests.
Working With Clients Who Have Religious/Spiritual Issues: A Survey of University Counseling Center Therapists

University counseling center therapists (N = 220) completed an Internet survey about religion/spirituality in therapy, with 200 of these therapists describing therapy with a recent client whose issues involved religion/spirituality. Common client religion/spirituality issues were questioning one's childhood religion, exploring religion/spirituality beliefs, and using religion/spirituality as a source of strength. Similarity of therapist and client religion/spirituality values was not related to the strength of the therapeutic relationship. Therapists with higher levels of religious commitment tended to rate religion/spirituality goals as more important and use religion/spirituality interventions more frequently than therapists with lower levels of religious commitment. Finally, therapists with more religion/spirituality training had higher self-efficacy for working with religion/spirituality issues. Implications for practice, research, and training are discussed.
Cortical α1-adrenergic regulation of acute and sensitized morphine locomotor effects

The role of α1-adrenergic transmission was tested on locomotor effects of acute or repeated morphine (5 mg/kg, i.p.) administration. Prazosin, an α1-adrenergic antagonist, administered 30 min before morphine, either systemically (0.5 mg/kg, i.p.) or locally and bilaterally into the prefrontal cortex (200 pmol/side) reduced the stimulatory influence of morphine on locomotion. The progressive increase of the locomotor response induced by repeated morphine injections was blocked by a prazosin pretreatment but not the behavioral sensitization on the test day. These data suggest that blockade of cortical α1-adrenergic receptors reduces the expression of acute and sensitized locomotor responses to morphine, but does not prevent the induction of behavioral sensitization.
Research design options for testing mediation models and their implications for facets of validity

Purpose – Tests of assumed mediation models are common in research in many disciplines, including managerial psychology, industrial and organizational psychology, organizational behavior, and organizational theory. Thus, the purpose of this paper is to detail experimental design options for conducting such tests in a manner that has the potential to yield results that have high levels of internal and construct validity.Design/methodology/approach – The paper presents a logical analysis of strategies for testing mediation models so as to insure valid inferences about causal relations between variables.Findings – The most appropriate strategy for testing assumed mediation models is research that uses randomized experimental designs.Practical implications – Managers should base their actions on valid evidence about phenomena. More specifically, managerial actions should be predicated on research results that have high levels of internal, construct, and statistical conclusion validity. Thus, this paper encour.
Transmit beamforming to multiple co-channel multicast groups

The problem of transmits beamforming to multiple co-channel multicast groups is considered, from the viewpoint of guaranteeing a prescribed minimum signal-to-interference-plus-noise-ratio (SENR) at each receiver. The problem is a multicast generalization of the SENR-constrained multiuser downlink beamforming problem: the difference is that each transmitted stream is directed to multiple receivers, each with its own channel. Such generalization is relevant and timely, e.g., in the context of 802.16 wireless networks. Based on earlier results for a single multicast group, the joint problem is easily shown to be NP-hard, a fact that motivates the pursuit of quasi-optimal computationally efficient solutions. It is shown that Lagrangian relaxation coupled with a randomization/co-channel multicast power control loop yields a computationally efficient high-quality approximate solution. For a significant fraction of problem instances, the solutions generated this way are exactly optimal. Carefully designed and extensive simulation results are presented to support the main findings.
Pulmonary auscultation terminology employed in Brazilian medical journals between January of 1980 and December of 2003.

OBJECTIVE To evaluate the appropriateness of the use of auscultation terminology in Brazilian respiratory disease-related medical journals published between January of 1980 and December of 2003. METHODS A descriptive study was conducted, evaluating three medical journals: the Jornal de Pneumologia (Journal of Pulmonology), Jornal de Pediatria (Journal of Pediatrics) and Revista Brasileira de Medicina (Brazilian Journal of Medicine). Original articles and case reports about respiratory diseases were selected, and auscultation terminology was extracted from these articles. The appropriateness of terms used to describe adventitious sounds was assessed. RESULTS We found that the inappropriate use of terms was more frequent when intermittent sounds were described than when continuous sounds were described (87.7% versus 44.0%; p = 0.0000). No significant difference was observed between the inappropriate use of terms by pulmonologists and that observed for other specialists (56.5% versus 62.0%; p = 0.26). In addition, there were no significant differences among the various regions of the country or between the periods prior to and after the dissemination of international nomenclature. CONCLUSION Inappropriate use of pulmonary auscultation terms describing adventitious sounds remains common and widespread in Brazilian medical publications.
The Process of Education

Geoffrey Vickers advocated and illustrated the efficacy of informal education. Children and older students can and do learn within the contexts of tasks and questions that are meaningful to them. This article is about surprisingly successful learning in informal settings. Informal learning has often been encouraged because of the failure of more traditional approaches. Mathematics has been assumed to be certain and the model of describing truth. The certainty of mathematics and the formal mode of discussing mathematics are being reconsidered. Connections between mathematics and humanistic disciplines are the bases of a worldwide movement of mathematically minded scholars.
New insights into the climate–attitudes–outcome framework: Empirical evidence from the Australian service sector

Drawing on the climate–attitudes–outcome framework, this article examines the mediating effect of job satisfaction on the relationship between psychological climate perceptions (i.e., service climate, team support, and job security) and the job performance of frontline service employees. The authors further consider whether the link between psychological climate perceptions and job satisfaction may be moderated by three core self-evaluation traits of frontline service staff (emotional labor, self-efficacy, and personal achievement orientation). A survey of 874 frontline service employees reveals that service climate, team support, and job security indirectly contribute to job performance through job satisfaction. When more emotional labor deep acting is performed, the effects of the service climate on job satisfaction grow stronger. However, the effects of team support and job security on job satisfaction are not contingent on self-efficacy or personal achievement orientation, respectively.
The Effects of Student-Faculty Interaction In the 1990s

This study examined the effects of student-faculty interaction on student satisfaction and on a range of self-reported learning and personal development gains associated with attending college of 5,409 full-time undergraduates from 126 four-year colleges and universities. Findings show that the frequency of student-faculty interaction increased from first year through the senior year. Although its net effects were trivial, such interactions had substantial positive effects on studentsÕ efforts in other educationally purposeful activities, which had non-trivial effects on their estimated gains and satisfaction.
Substitutes for leadership in anaesthesia teams and their impact on leadership effectiveness

In this study we aim to increase our understanding of leadership in anaesthesia teams by investigating the relationship between substitutes for leadership, leadership behaviour, and team performance in situations with varying levels of routine and standardization. The present study relied on video recordings of 12 anaesthesia teams in a simulated setting with the occurrence of a nonroutine event. Clinical team performance was measured by the speed of adequate team reaction to this event. The leadership behaviours observed were coded either as content oriented (e.g., information transmission) or structuring (e.g., assigning tasks). Results showed that leadership behaviour changed depending upon the level of routine of a situation, the degree of standardization, and, to some extent, on the experience of team members. Leadership tends to be positively related to team performance during nonroutine and low standardized situations but negatively related to team performance in routine and highly standardized situations. Furthermore, leadership is only slightly related to team member experience. This study improves our understanding of influences of substitutes for leadership on successful leadership behaviour in anaesthesia teams. The findings also lead to suggestions for both further research and the enhancement of team leadership in critical care.
Patterns in age‐specific malaria incidence in a population exposed to low levels of malaria transmission intensity

The population of the northern part of the province of KwaZulu Natal in South Africa has experienced low levels of malaria transmission intensity for many years. We investigated the widely held assumption that individuals in this population do not develop clinical tolerance to infection with Plasmodium falciparum. We calculated malaria incidence rates by 5‐year age groups from a comprehensive small area malaria reporting system and from national census data for the period from mid‐1990 to mid‐1999. Incidence rates were plotted against age groups for each of the nine malaria seasons, and by quintile of crude incidence rate. These show that age‐specific incidence varied considerably in areas of high incidence and in years of high incidence. In these areas malaria incidence rose with age until the late teens, and either remained constant or decreased in young adults. This finding appears to be consistent with results from settings of much higher transmission intensities which show that clinical tolerance to infection with P. falciparum in adults may be acquired as a result of a small number of infective bites in early childhood and implies that even in this relatively low transmission area, there is an asymptomatic reservoir of infection in older people. The results also show that in high incidence subregions the lowest incidences are reported for children under 5 years of age, which may be the result of greater protection offered to this age group by malaria vector control through indoor house spraying.
Behavioral Aspects of Price Setting, and Their Policy Implications

This paper starts by discussing consumers' cognitive and emotional reaction to posted prices. Cognitively, some consumers do not appear to make effective use of price information to maximize their consumption-based utility. Emotionally, prices can induce regret and anger among consumers. The optimal responses of firm's prices to these reactions can explain why firms charge prices below marginal cost for many goods and why they keep their prices rigid. This explanation of price rigidity has the advantage of being consistent with the observation that the typical size of price increases is nearly invariant to inflation. Lastly, the paper turns to some government policies regarding prices that appear to have some consumer support. It argues that both laws against price gouging and laws regulating the terms of mortgages may have support because consumers recognize that many people do not optimize their consumption effectively and because they are angry at firms that take advantage of this. These attitudes can also explain consumer support for monetary policies that maintain a low level of average inflation.
Back to the Beginning: Persistence and the Cross-Section of Corporate Capital Structure

We find that the majority of variation in leverage ratios is driven by an unobserved time-invariant effect that generates surprisingly stable capital structures: High (low) levered firms tend to remain as such for over two decades. This feature of leverage is largely unexplained by previously identified determinants, is robust to firm exit, and is present prior to the IPO, suggesting that variation in capital structures is primarily determined by factors that remain stable for long periods of time. We then show that these results have important implications for empirical analysis attempting to understand capital structure heterogeneity.
Postcards from the EDge project: randomised controlled trial of an intervention using postcards to reduce repetition of hospital treated deliberate self poisoning

Abstract Objective To determine whether an intervention using postcards (postcards from the EDge project) reduces repetitions of hospital treated deliberate self poisoning. Design Randomised controlled trial. Setting Regional referral service for general hospital treated deliberate self poisoning in Newcastle, Australia. Participants 772 patients aged over 16 years with deliberate self poisoning. Intervention Non-obligatory intervention using eight postcards over 12 months along with standard treatment compared with standard treatment alone. Main outcome measures Proportion of patients with one or more repeat episodes of deliberate self poisoning and the number of repeat episodes for deliberate self poisoning per person in 12 months. Results The proportion of repeaters with deliberate self poisoning in the intervention group did not differ significantly from that in the control group (57/378, 15.1%, 95% confidence interval 11.5% to 18.7% v 68/394, 17.3%, 13.5% to 21.0%: difference between groups -2%, -7% to 3%). In unadjusted analysis the number of repetitions were significantly reduced (incidence risk ratio 0.55, 0.35 to 0.87). Conclusion A postcard intervention reduced repetitions of deliberate self poisoning, although it did not significantly reduce the proportion of individual repeaters.
Between cosmopolitanism and the locals

How useful is the distinction between cosmopolitans and locals in understanding the place of mobility and travel within contemporary youth transition? In this article we draw on a qualitative longitudinal study of young people in the UK, suggesting that localities have their own particular economy of mobility, operating at levels of the material, cultural and fantasy. In different localities young people are tied to the immediacy of physical and social space to differing degrees, and factors such as ethnicity, gender, sexuality and social class are significant in this. We illustrate and explore these themes through two longitudinal case histories in order to see how resources and agency are animated in practice. We conclude by arguing against the use of fixed typologies, suggesting that young people are torn between competing forces in relation to notions of home, tradition and fixedness on one hand and of mobility, escape and transformation on the other. The ways in which these tensions are negotiated at the biographical level are firmly embedded in gendered projects of self, through which young people work towards the kinds of men and women that they will be, drawing on family, community and cultural resources in the process.
Determinants of fathers' participation in family work.

Determinants of fathers participation in child care and household chores are examined in an interview study of 160 US caucasian middle-class mothers and fathers. This study examines maternal employment status as well as several aspects of mothers work patterns as potential determinants of paternal participation. Several aspects of fathers work patterns are also examined. 4 other parental categories of determinants of paternal participation include: 1) family structure 2) parental sex-role attitudes 3) parental socialization and 4) sociodemographic factors. Results indicate that maternal employment moderates the relationship between particular determinants and particular forms of paternal involvement. The effect of childs age and sex on fathers participation was significant for total interaction time and solo interaction time for the total sample and for fathers with nonemployed wives. In families with elementary-school-aged children fathers absolute participation is highest when the cildren are at the young end of the age range and decreases as the children mature presumably as children grow in independence and allow the father to respond to his preferences rather than to the demands of the family situation. In dual-earner families the mothers attitude toward the male role is also a major predictor of fathers participation. In families with nonemployed wives fathers attitudes toward the quality of fathering they received as youngsters is the most consistent predictor of participation. These findings support earlier research suggesting that fathers tend to compensate for perceived deprivation rather than initiate their fathers patterns.
Prospective risk factors for new-onset post-traumatic stress disorder in National Guard soldiers deployed to Iraq

Background National Guard troops are at increased risk for post-traumatic stress disorder (PTSD); however, little is known about risk and resilience in this population. Method The Readiness and Resilience in National Guard Soldiers Study is a prospective, longitudinal investigation of 522 Army National Guard troops deployed to Iraq from March 2006 to July 2007. Participants completed measures of PTSD symptoms and potential risk/protective factors 1 month before deployment. Of these, 81% (n=424) completed measures of PTSD, deployment stressor exposure and post-deployment outcomes 2–3 months after returning from Iraq. New onset of probable PTSD ‘diagnosis’ was measured by the PTSD Checklist – Military (PCL-M). Independent predictors of new-onset probable PTSD were identified using hierarchical logistic regression analyses. Results At baseline prior to deployment, 3.7% had probable PTSD. Among soldiers without PTSD symptoms at baseline, 13.8% reported post-deployment new-onset probable PTSD. Hierarchical logistic regression adjusted for gender, age, race/ethnicity and military rank showed that reporting more stressors prior to deployment predicted new-onset probable PTSD [odds ratio (OR) 2.20] as did feeling less prepared for deployment (OR 0.58). After accounting for pre-deployment factors, new-onset probable PTSD was predicted by exposure to combat (OR 2.19) and to combat's aftermath (OR 1.62). Reporting more stressful life events after deployment (OR 1.96) was associated with increased odds of new-onset probable PTSD, while post-deployment social support (OR 0.31) was a significant protective factor in the etiology of PTSD. Conclusions Combat exposure may be unavoidable in military service members, but other vulnerability and protective factors also predict PTSD and could be targets for prevention strategies.