Miracle-dz/UniFAR-FTUs huggingface dataset:
Los tangibles como predictores de la satisfacción del usuario en servicios deportivos

Tangibles as predictors of customer satisfaction in sports services. This study investigates the power of tangible dimensions of service quality to predict customer satisfaction. For this purpose, we statistically controlled the effects of dimensions of service quality that describe social interaction between employees and customers, both functionally and relationally. A field survey was conducted with the participation of 556 customers of a sports centre. The results showed that tangible dimensions of service quality predicted an additional and significant amount of customer satisfaction variance, beyond the effects of service quality of the social interaction. The article concludes with the discussion of the implications of these results.
Opportunistic relaying in ad-hoc networks for throughput improvement

In this paper, n mobile source-destination pairs and m relay nodes are considered in the same frequency band. In the previous works, it is assumed that the ad hoc nodes were fixed which causes users with lower SINR cannot communicate through relays. Here, we propose a scheme in which the mobility is managed in opportunistic manner to let ad hoc nodes satisfy a lower SINR threshold to be active and transmit successfully. We compute new SINR threshold for n source-destination pairs and m relays distributed uniformly and randomly on the constant area. This threshold is achieved as 1-√(log n/n)/R which causes the lower bound of the throughput to be increased. Also, we investigate the required time for movement of nodes and estimate it as Θ(√(log n)). This time is negligible compared to queuing delay term which is computed previously as in the order of Θ(n). Both of the simulation results and analytical calculations show that we achieve the better throughput while the delay does not change meaningfully.
Pitch-change detection and pitch-direction discrimination in children.

The present study investigated developmental changes in the ability to detect a change in pitch and to discriminate the direction of a pitch change using pitch glides. Adaptive-tracking procedures established separate thresholds for both of these abilities in musically untrained participants across nine age-groups (5-, 6-, 7-, 8-, 9-, 10-, 11-, 13-year-olds, and adults). The use of an odd-one-out paradigm avoided the need for participants to use semantic labels when determining the direction of a pitch change, and screening of the adaptive-staircase profile plots permitted the exclusion of inattentive performers. Although adults achieved equivalent thresholds for pitch-change detection and pitch-direction discrimination, there were age-related improvements for pitch-direction discrimination but not pitch-change detection in children between the ages of 6 and 11 years. The findings may indicate that the capacities to detect a change in pitch versus to discriminate the direction of a pitch change follow different developmental trajectories.
Cognitive Strategy Variations During Aging

The last two decades of research in cognitive aging have seen a shift from simply describing age-related changes in cognitive performance to determining the mechanisms underlying these changes. Recent findings on variations in the use of cognitive strategies during aging further our understanding of how these changes in performance occur during adulthood. Data show age-related differences in strategy repertoire, strategy distribution, strategy execution, and strategy selection. I illustrate these findings in cognitive domains as varied as episodic memory, working memory, reasoning, decision making, problem solving, and language. I discuss how strategic variations are best studied both conceptually and methodologically and how investigating strategic variations helps us make significant progress in the study of cognitive aging. As I also show in this article, whichever the cognitive domain being studied, there are no restrictions that would prevent us from adopting a strategy perspective.
Improved Survival in Patients with Recurrent Wilms Tumor: the Experience of the Seoul National University Children's Hospital

The survival in cases with relapsed Wilms tumor is dismal. Recently, however the introduction of new therapeutic agents and experimental strategies has improved the survival. We analysed the survival of patients with relapsed Wilms tumor according to the treatment period. During the early period 1983-1993, patients who had received two drugs were treated with doxorubicin and the others were treated with cisplatin and etoposide, whereas during the late period 1994-2004, patients were treated with combinations of cyclophosphamide/etoposide and carboplatin/etoposide. During the early period, 8 of 57 experienced relapse, and 8 of 41 relapsed during the late period. Only 2 patients treated during the early period survived in complete response (CR), whereas during the late period, 5 patients remained alive in CR, and 3 of those received high-dose chemotherapy (HDC) with autologous peripheral stem cell rescue (SCR). The estimated 5 yr event-free survival rate was 37.5% in the entire study group, 50% for patients in the late period, and 25% for patients in the early period (p=0.38). The survival in patients with relapsed Wilms tumor dramatically improved during the late period and HDC with SCR was one of the effective salvage strategies.
Dual microphone noise PSD estimation for mobile phones in hands-free position exploiting the coherence and speech presence probability

This contribution addresses the enhancement of noisy speech signals picked up by a dual microphone mobile phone in hands-free position. A novel technique to estimate the noise power spectral density is presented which combines two methods: a single microphone algorithm based on the speech presence probability and a dual microphone technique exploiting the coherence properties of the target signal and the background noise. Due to the novel approach, the weakness of both methods can be overcome. Since the proposed method requires knowledge of the current coherence properties, a technique is presented which estimates the coherence of the speech and noise signals, which is usually not known in practice.
A Case Study of Parkinson's Disease Diagnosis using Artificial Neural Networks

Artificial Neural Network (ANN)-based diagnosis of medical diseases has been taken into great consideration in recent years. In this paper, two types of ANNs are used to classify effective diagnosis of Parkinson's disease. Multi- Layer Perceptron (MLP) with back-propagation learning algorithm and Radial Basis Function (RBF) ANNs were used to differentiate between clinical variables of samples (N = 195) who were suffering from Parkinson's disease and who were not. For this purpose, Parkinson's disease data set, taken from UCI machine learning database was used. Mean squared normalized error function was used to measure the usefulness of our networks during trainings and direct performance calculations. It was observed that MLP is the best classification with 93.22% accuracy for the data set. Also, we got 86.44% accuracy in RBF classification for the same data set. This technique can assist neurologists to make their ultimate decisions without hesitation and more astutely.
Absorption of high-intensity subpicosecond lasers on solid density targets.

The absorption of subpicosecond ([approx]100 fs) high-intensity ([ital I][approx]10[sup 20]--10[sup 21] W/cm[sup 2]) laser pulses normally incident on solid density targets is examined by particle simulations, which include electron scattering. For targets which are overdense by factors exceeding 100, electrons accelerated by the ponderomotive force of the laser couple their energy electrostatically to the ions and the absorption efficiency into the ions scales as [ital I][sup 1/2]. For example, absorption in a carbon target is only a few percent, but a large fraction of the absorbed energy is transferred to the ions.
Work-Related Trauma Effects in Child Protection Social Workers

Abstract Child welfare workers are exposed to a variety of workplace events that could overwhelm them. This study examined whether negative workplace events were associated with workplace trauma effects amongst child welfare workers, and considered whether job support or job satisfaction moderated the influence of events on effects. Vicarious events were more highly associated with trauma effects (r = 0.54, p < 0.000) than were direct events (r = 0.28, p < 0.000), and neither job support nor job satisfaction moderated the relationship. Workplace trauma events accounted for substantial variability in workplace trauma effects (R2 = 0.344) in the final regression model tested. The discussion addresses opportunities for increasing worker safety, methods for supporting workers in managing negative effects and implications for future research.
Effect of growth on the estrogen receptor levels in MCF-7 cells.

MCF-7 cells have been shown to contain estrogen receptor in several cell fractions following homogenization: nuclei, microsomes, and cytosol. The amount of 17 beta-estradiol-binding capacity found in each cellular compartment depended on the inclusion of detergent in homogenization buffers and on the use of 0.25 M sucrose in the nuclear washes. 17 beta-Estradiol receptor (E2R) associated with nuclei (whole nuclei exchange assay, 0.6 M KCl soluble, and that found on membranes sheared from crude nuclear pellets by centrifugation in 0.25 M sucrose buffer) displayed a dissociation constant (Kd) of 0.77 +/- 0.01 (S.D.) nM (n = 7). KdS of the cytoplasmic (microsomes and soluble) receptors were determined to be 0.33 +/- 0.10 nM (n = 9). Exchangeable ligand on partially purified nuclei assumed its highest level in MCF-7 cells during logarithmic growth in serum-containing media (0.8 pmol/micrograms DNA) but declined after the culture reached confluence (0.2 pmol/micrograms DNA). Seventy-five % of the nuclear E2R declined linearly after feeding MCF-7 cells in logarithmic growth phase an estrogen- and serum-free medium (t1/2 3.5 days). Another class of salt-extractable nuclear receptor (0.2 pmol/micrograms DNA) persisted in postconfluent cultures whether fed estrogen (serum-containing media) or not (serum-free media). This residual binding capacity remained in nuclei of MCF-7 cells for an extended period of time. MCF-7 cells demonstrated functionality of E2R throughout their growth phases as evidenced by the replenishment of cytosolic E2R and the induction of progesterone receptor when given 17 beta-estradiol.
Toward a Model of Racial Justice Ally Development

This paper explores the experiences of White college students as they make sense of their race and their roles in racial justice movements. Findings from two separate but related qualitative studies, when viewed together, result in an exploratory model of racial justice ally development. Racial justice allies are White students who actively work against the system of oppression that maintains their power. The model presented in this paper explores how college affects the development of racial justice allies, which may allow student affairs professionals to more effectively encourage this type of development.
Exact Tachyon condensation on noncommutative torus

We construct the exact non-commutative solutions on tori. This gives an exact description of tachyon condensation on bosonic D-branes, non-BPS D-branes and brane-antibrane systems. We obtain various bound states of D-branes after the tachyon condensation. Our results show that these solutions can be generated by applying the gauge Morita equivalence between the constant curvature projective modules. We argue that there is a general framework of the non-commutative geometry based on the notion of Morita equivalence which underlies this specific example.
Design of autonomous micro-solar powered energy harvesting system for self-powered batteries-less wireless sensor mote

Harvesting electrical power from environment energy sources is an attractive and increasingly feasible option for several batteries-less micro-scale electronic systems such as biomedical implants and wireless sensor nodes that need to operate autonomously for long periods of time without needed batteries replacement and maintenance. However, designing highly efficient micro-scale energy harvesting systems requires an in-depth understanding of various design considerations and tradeoffs. This paper reports and describes method of power management circuit design and implementation for micro-scale solar energy harvesting that based-on step-up voltage conversion, DC-DC boost converter with maximum peak power controllable and minimum 300mV start-up input voltage. A micro-solar powered energy harvesting and power management system introduced for targeting to autonomous wireless sensor node (AWSN) application for monitoring purpose such as remote patient monitoring, structural monitoring and precision agriculture monitoring. In order to enhance efficiency of supply power to a microcontroller unit (MCU) and a radio frequency (RF) module in a battery-less sensor network device without battery power, our current prototype system utilizes combination of a super-capacitor with miniaturize flexible photovoltaic cells. Based on the consideration of practical application, we designed a communication mechanism for the battery-less wireless sensor mote network system and discuss the various challenges and considerations involved from a system-design perspective.
Peer-Mediated Pivotal Response Treatment for Young Children With Autism Spectrum Disorders

This review examined the effectiveness of peer-mediated pivotal response treatment (PM-PRT) to increase social-communication skills for children with autism spectrum disorders (ASD). A systematic review was conducted of all published studies examining PM-PRT in school-aged children with ASD, based on an established rubric. Five PM-PRT studies utilizing single-subject research designs were reviewed, involving 29 participants (8 with ASD and 21 peer coaches). Most studies of PM-PRT observed positive outcomes. However, the existing research base did not meet criteria for classification as promising or established evidence-based practice (EBP) for improving social skill deficits in children with ASD. More research is required for PM-PRT to be considered formally as EBP. This review may be used to guide clinical decisions for school psychologists and future research. Our aim was to highlight the rationale for, and core aspects of, this intervention and discuss school-based applications.
Non-canonical Translation in Plant RNA Viruses

Viral protein synthesis is completely dependent upon the host cell's translational machinery. Canonical translation of host mRNAs depends on structural elements such as the 5′ cap structure and/or the 3′ poly(A) tail of the mRNAs. Although many viral mRNAs are devoid of one or both of these structures, they can still translate efficiently using non-canonical mechanisms. Here, we review the tools utilized by positive-sense single-stranded (+ss) RNA plant viruses to initiate non-canonical translation, focusing on cis-acting sequences present in viral mRNAs. We highlight how these elements may interact with host translation factors and speculate on their contribution for achieving translational control. We also describe other translation strategies used by plant viruses to optimize the usage of the coding capacity of their very compact genomes, including leaky scanning initiation, ribosomal frameshifting and stop-codon readthrough. Finally, future research perspectives on the unusual translational strategies of +ssRNA viruses are discussed, including parallelisms between viral and host mRNAs mechanisms of translation, particularly for host mRNAs which are translated under stress conditions.
An approximation algorithm for Uniform Capacitated k-Median problem with 1 + ε capacity violation

We study the Capacitated k-Median problem, for which all the known constant factor approximation algorithms violate either the number of facilities or the capacities. While the standard LP-relaxation can only be used for algorithms violating one of the two by a factor of at least two, Shi Li [SODA'15, SODA'16] gave algorithms violating the number of facilities by a factor of 1+{\epsilon} exploring properties of extended relaxations. In this paper we develop a constant factor approximation algorithm for Uniform Capacitated k-Median violating only the capacities by a factor of 1+{\epsilon}. The algorithm is based on a configuration LP. Unlike in the algorithms violating the number of facilities, we cannot simply open extra few facilities at selected locations. Instead, our algorithm decides about the facility openings in a carefully designed dependent rounding process.
Asymptotes and metaphors: Teaching feminist theory

As we move through our daily lives, the cogency of the world shifts and changes. Many constructs exist to explain and account for how we view and interact with our environment. Education is where our understandings become formalized and are challenged. To this end, a plethora of pedagogical tools are made available to aid educators in illuminating the world(s) around and within each student. However, there is always room for new ways of presenting information, concepts, and ideas. I put forth the mathematical trope of asymptotes as a new pedagogical tool. Asymptotes, as metaphor, work as a pedagogical tool for their utility as both visual and conceptual space. Through highlighting how asymptotes can map conceptualizations of ‘the body’, be utilized as a means to build and comprehend theoretical inquiry, and reconceptualize difficult issues and concepts within Women’s Studies and Feminist classrooms, I posit the asymptotes metaphor as both visual/conceptual space and pedagogical tool.
To each his own: personalized content selection based on text comprehensibility

Imagine a physician and a patient doing a search on antibiotic resistance. Or a chess amateur and a grandmaster conducting a search on Alekhine's Defence. Although the topic is the same, arguably the two users in each case will satisfy their information needs with very different texts. Yet today search engines mostly adopt the one-size-fits-all solution, where personalization is restricted to topical preference. We found that users do not uniformly prefer simple texts, and that the text comprehensibility level should match the user's level of preparedness. Consequently, we propose to model the comprehensibility of texts as well as the users' reading proficiency in order to better explain how different users choose content for further exploration. We also model topic-specific reading proficiency, which allows us to better explain why a physician might choose to read sophisticated medical articles yet simple descriptions of SLR cameras. We explore different ways to build user profiles, and use collaborative filtering techniques to overcome data sparsity. We conducted experiments on large-scale datasets from a major Web search engine and a community question answering forum. Our findings confirm that explicitly modeling text comprehensibility can significantly improve content ranking (search results or answers, respectively).
Implementing a Continuous Quality Improvement Program in a High-Volume Clinical Echocardiography Laboratory: Improving Care for Patients With Aortic Stenosis

Background—The management of aortic stenosis rests on accurate echocardiographic diagnosis. Hence, it was chosen as a test case to examine the utility of continuous quality improvement (CQI) approaches to increase echocardiographic data accuracy and reliability. A novel, multistep CQI program was designed and prospectively used to investigate whether it could minimize the difference in aortic valve mean gradients reported by echocardiography when compared with cardiac catheterization. Methods and Results—The Duke Echo Laboratory compiled a multidisciplinary CQI team including 4 senior sonographers and MD faculty to develop a mapped CQI process that incorporated Intersocietal Accreditation Commission standards. Quarterly, the CQI team reviewed all moderate- or greater-severity aortic stenosis echocardiography studies with concomitant catheterization data, and deidentified individual and group results were shared at meetings attended by cardiologists and sonographers. After review of 2011 data, the CQI team proposed specific amendments implemented over 2012: the use of nontraditional imaging and Doppler windows as well as evaluation of aortic gradients by a second sonographer. The primary outcome measure was agreement between catheterization- and echocardiography-derived mean gradients calculated by using the coverage probability index with a prespecified acceptable echocardiography–catheterization difference of <10 mm Hg in mean gradient. Between January 2011 and January 2014, 2093 echocardiograms reported moderate or greater aortic stenosis. Among cases with available catheterization data pre- and post-CQI, the coverage probability index increased from 54% to 70% (P=0.03; 98 cases, year 2011; 70 cases, year 2013). The proportion of patients referred for invasive valve hemodynamics decreased from 47% pre-CQI to 19% post-CQI (P<0.001). Conclusions—A laboratory practice pattern that was amenable to reform was identified, and a multistep modification was designed and implemented that produced clinically valuable performance improvements. The new protocol improved aortic stenosis mean gradient agreement between echocardiography and catheterization and was associated with a measurable decrease in referrals of patients for invasive studies.
Systemic and local immune response of cows to intramammary infection with Staphylococcus aureus.

The association between Staphylococcus aureus chronic mammary gland infection and the resulting immune response expressed by the production of specific IgG and IgA antibodies in blood and milk was studied in Israeli Holstein cows. Specific antibodies of the IgG class were detected in sera of 82.6 per cent of the cows chronically infected by S aureus, while in 17.4 per cent no such antibodies could be detected. Specific IgG antibodies to S aureus were neither detected in sera of cows free of mammary infection nor in those infected with different coagulase-negative staphylococci (CNS) such as S intermedius, S chromogenes or S haemolyticus. In milk, specific IgG antibodies to S aureus were detected only in cows with positive serology. The end point dilutions in the milk were 5 to 30 per cent of that of blood from the same cow. No significant difference in IgG titres was found in the same cow if the quarter was infected with S aureus or not. Specific antibodies to S aureus of the IgA class could not be detected in the sera of any of the cows included in this study. In milk, a specific IgA antibody was detected only in the samples from the S aureus infected quarters in which S aureus was isolated at the time of the experiment. In the same cow, quarters infected by S aureus were found to have a significantly higher IgA titre (P < 0.0001) than that of the non-infected ones.
A SPDT switch in a standard 45 nm CMOS process for 94 GHz Applications

A fully integrated single-pole double-throw (SPDT) transmit/receive switch (T/R switch) is implemented on a standard 45nm CMOS process. This circuit is dedicated to fully integrated CMOS RF front end modules operating at 94 GHz. The traveling-wave topology was used to minimize the insertion loss at millimeter wave frequencies. The switch exhibits a measured insertion loss of 5.3 dB, an isolation of 20.5 dB, and a return loss at Tx/Rx port of −12 dB at 94 GHz. An input 1dB compression point higher than 11 dBm is measured at 60 GHz and 15 dBm at 94 GHz after simulation. Excellent agreement between measurement and simulation results is observed.