Miracle-dz/UniFAR-FTUs huggingface dataset:
PEM-Proton Exchange Membrane Fuel Cell Emulator Based on Buck Converter

PEMFC (proton Exchange Membrane Fuel Cell) seem to be a good solution because of their high power density, solid electrolyte, low corrosion and low temperature. Feature of this mathematical model is integration of all possible dynamic equations like dynamics of the charge equations, dynamics of the molar flow of hydrogen and oxygen pressure, temperature, stack current etc. The V-I characteristic of PEMFC is obtained for this dynamic model. This paper discusses a possible solution to emulate a PEMFC system by using a DC-DC buck converter. The emulator can easily applied to other fuel cell systems if the polarization curve has the same current rate and maximum power. In this way it is possible to utilize the converter and perform the necessary tests to optimize a fuel cell system by avoiding the waste of hydrogen and the purchases of cells as well as any cell damage. A mathematical model of 1.1KW proton exchange membrane fuel cell (PEMFC) is developed and FC emulator using buck converter is emulated for 500W.
Non-invasive load monitoring of induction motor drives using magnetic flux sensors

Existing load monitoring methods for induction machines are generally effective, but suffer from sensitivity problems at low speeds and non-linearity problems at high supply frequencies. This study proposes a new non-invasive load monitoring method based on giant magnetoresistance flux sensors to trace stray flux leaking from induction motors. Finite element analysis is applied to analyse stray flux features of test machines. Contrary to the conventional methods of measuring stator and/or rotator rotor voltage and current, the proposed method measures the dynamic magnetic field at specific locations and provides time-spectrum features (e.g. spectrograms), response time load and stator/rotor characteristics. Three induction motors with different starting loading profiles are tested at two separate test benches and their results are analysed in the time-frequency domain. Their steady features and dynamic load response time through spectrograms under variable loads are extracted to correlate with load variations based on spectrogram information. In addition, the transient stray flux spectrogram and time information are more effective for load monitoring than steady state information from numerical and experimental studies. The proposed method is proven to be a low-cost and non-invasive method for induction machine load monitoring.
Prevalence of breastfeeding in premature infants with very low birth weight in the first six months of life - doi: 10.4025/actascihealthsci.v35i2.11805

Few studies have investigated the duration of breastfeeding among premature infants born with very low birth weight. The prevalence of exclusive breastfeeding among very low birth weight premature infants at a university hospital in Londrina Parana State, Brazil and the identification of factors related to breastfeeding practice were determined. Current quantitative and analytic retrospective study analyzed the medical records, attendance reports and interviews of 54 mother-infant binomials. Breastfeeding was prevalent in 90% of infants, of which 50% were exclusively breastfed, at hospital discharge. However, 51% were weaned before their sixth month. The statistical analysis showed a positive association between breastfeeding and do not working mothers outside the home, cesarean delivery, positive previous experience in breastfeeding and gestational age at birth over 33 weeks. MF prevalence in the specific population NBVLW infants reinforce the notion that breastfeeding preterm infants, albeit challenging, may be carried out with the appropriate support of the mother-child binomial.
Chemical, phytochemical and functional properties of selected seeds' flours

This study was conducted to investigate qualities of benoil (Moringa oleifera), melon, water melon (Citrullus lanatus L.), pear and pawpaw (Carica papaya) seeds’ flours with a view of harnessing them for consumption and possible industrial usage. All the seeds were manually separated from fruit pulps / pod, cleaned, washed with distilled water, air dried, shelled manually, sun dried and then grinded to flours. Chemical contents and functional properties of the resulting seed’s flours were determined using standard methods. The results of the proximate and mineral composition indicated that all the seeds’ flours contained considerable amounts of protein, fat, carbohydrate, ash, crude fibre, Ca, Na, Fe and P which made them potentials food supplements/food processing especially benoil (Moringa oleifera) and pawpaw seeds’ flours. The result shows that watermelon seed flour ranked the highest in terms of all the phytochemical contents determined except its saponin content which was low. Melon seed’s flour was low in saponin and tannin contents while its flavonoids and alkaloids contents were high. Saponin content of benoil seed’s flours was also high compare to other seeds’ flours tested. The tannin and flavonoid contents of benoil seed flour were low while the alkaloids content shows to be low in melon seed flour. However, the cyanide content of all the seeds’ flours examined were low generally which shows the seeds’ flours are expected to be save for consumption. There were significant (p > 0.05) differences between the samples for all the phytochemical content determined. The seeds’ containing all these phytochemicals show that they are highly medicinal and is good for human consumption especially watermelon and benoil (Moringa oleifera) seeds’ flours. Also, the investigation showed that all the flours are characterized with good functional properties which mean they could be incorporated into food or use for industrial purpose most especially in infant food formulation. These qualities are indications that great potential exist for these seeds instead of throwing them away as waste after consuming the fruit pulp.
Oculomotor inhibition covaries with conscious detection X

White AL, Rolfs M. Oculomotor inhibition covaries with conscious detection. J Neurophysiol 116: 1507–1521, 2016. First published July 6, 2016; doi:10.1152/jn.00268. 2016. —Saccadic eye movements occur frequently even during attempted fixation, but they halt momentarily when a new stimulus appears. Here, we demonstrate that this rapid, involuntary “oculomotor freezing” reflex is yoked to fluctuations in explicit visual perception. Human observers reported the presence or absence of a brief visual stimulus while we recorded microsaccades, small spontaneous eye movements. We found that microsaccades were reflexively inhibited if and only if the observer reported seeing the stimulus, even when none was present. By applying a novel Bayesian classification technique to patterns of microsaccades on individual trials, we were able to decode the reported state of perception more accurately than the state of the stimulus (present vs. absent). Moreover, explicit perceptual sensitivity and the oculomotor reflex were both susceptible to orientation-specific adaptation. The adaptation effects suggest that the freezing reflex is mediated by signals processed in the visual cortex before reaching oculomotor control centers rather than relying on a direct subcortical route, as some previous research has suggested. We conclude that the reflexive inhibition of microsaccades immediately and inadvertently reveals when the observer becomes aware of a change in the environment. By providing an objective measure of conscious perceptual detection that does not require explicit reports, this finding opens doors to clinical applications and further investigations of perceptual awareness.
Selection and Application of Tissue microRNAs for Nonendoscopic Diagnosis of Barrett’s Esophagus

Background & Aims MicroRNA (miRNA) is highly stable in biospecimens and provides tissue-specific profiles, making it a useful biomarker of carcinogenesis. We aimed to discover a set of miRNAs that could accurately discriminate Barrett’s esophagus (BE) from normal esophageal tissue and to test its diagnostic accuracy when applied to samples collected by a noninvasive esophageal cell sampling device. Methods We analyzed miRNA expression profiles of 2 independent sets of esophageal biopsy tissues collected during endoscopy from 38 patients with BE and 26 patients with normal esophagus (controls) using Agilent microarray and Nanostring nCounter assays. Consistently up-regulated miRNAs were quantified by real-time polymerase chain reaction in esophageal tissues collected by Cytosponge from patients with BE vs without BE. miRNAs were expressed from plasmids and antisense oligonucleotides were expressed in normal esophageal squamous cells; effects on proliferation and gene expression patterns were analyzed. Results We identified 15 miRNAs that were significantly up-regulated in BE vs control tissues. Of these, 11 (MIR215, MIR194, MIR 192, MIR196a, MIR199b, MIR10a, MIR145, MIR181a, MIR30a, MIR7, and MIR199a) were validated in Cytosponge samples. The miRNAs with the greatest increases in BE tissues (7.9-fold increase in expression or more, P < .0001: MIR196a, MIR192, MIR194, and MIR215) each identified BE vs control tissues with area under the curve (AUC) values of 0.82 or more. We developed an optimized multivariable logistic regression model, based on expression levels of 6 miRNAs (MIR7, MIR30a, MIR181a, MIR192, MIR196a, and MIR199a), that identified patients with BE with an AUC value of 0.89, 86.2% sensitivity, and 91.6% specificity. Expression level of MIR192, MIR196a, MIR199a, combined that of trefoil factor 3, identified patients with BE with an AUC of 0.93, 93.1% sensitivity, and 93.7% specificity. Hypomethylation was observed in the promoter region of the highly up-regulated cluster MIR192–MIR194. Overexpression of these miRNAs in normal esophageal squamous cells increased their proliferation, via GRHL3 and PTEN signaling. Conclusions In analyses of miRNA expression patterns of BE vs non-BE tissues, we identified a profile that can identify Cytosponge samples from patients with BE with an AUC of 0.93. Expression of MIR194 is increased in BE samples via epigenetic mechanisms that might be involved in BE pathogenesis.
Amino-Functionalized Reduced Graphene-Oxide-Copper (I) Oxide Composite: A Prospective Catalyst for Photo-Reduction of CO2

In the present article, an easy synthetic strategy of a novel composite photo-catalyst comprising of amino-functionalized reduced graphene oxide and Cu2O has been proposed. Role of this composite catalyst in photo reduction of CO2 has been analyzed and it is shown that both amino groups and reduced grapheme oxide, participate in enhancing quantum yield of the photo reduction process.
DECO-MWE: Building a Linguistic Resource of Korean Multiword Expressions for Feature-Based Sentiment Analysis

This paper aims to construct a linguistic resource of Korean Multiword Expressions for Feature-Based Sentiment Analysis (FBSA): DECO-MWE. Dealing with multiword expressions (MWEs) has been a critical issue in FBSA since many constructs reveal lexical idiosyncrasy. To construct linguistic resources of sentiment MWEs efficiently, we utilize the Local Grammar Graph (LGG) methodology: DECO-MWE is formalized as a Finite-State Transducer that represents lexical-syntactic restrictions on MWEs. In this study, we built a corpus of cosmetics review texts, which show particularly frequent occurrences of MWEs. Based on an empirical examination of the corpus, four types of MWEs have been distinguished. The DECO-MWE thus covers the following four categories: Standard Polarity MWEs (SMWEs), Domain-Dependent Polarity MWEs (DMWEs), Compound Named Entity MWEs (EMWEs) and Compound Feature MWEs (FMWEs). The retrieval performance of the DECO-MWE shows 0.806 f-measure in the test corpus. This study brings a twofold outcome: first, a sizeable general-purpose polarity MWE lexicon, which may be broadly used in FBSA; second, a finite-state methodology adopted in this study to treat domain-dependent MWEs such as idiosyncratic polarity expressions, named entity expressions or feature expressions, and which may be reused in describing linguistic properties of other corpus domains.
Unravelling theCostsofFlight for ImmuneDefenses in theMigratory Monarch Butterfly

Synopsis Migratory animals undergo extreme physiological changes to prepare for and sustain energetically costly movements; one potential change is reduced investment in immune defenses. However, because some migrants have evolved to minimize the energetic demands of movement (for example, through the temporary atrophy of non-essential organs such as those involved in reproduction), migratory animals could potentially avoid immunosuppression during long-distance journeys. In this study, we used a tethered flight mill to examine immune consequences of experimentally induced powered flight in eastern North American monarch butterflies. These butterflies undergo an annual two-way long-distance migration each year from as far north as Canada to wintering sites in Central Mexico. We quantified immune measures as a function of categorical flight treatment (flown versus control groups) and continuous measures of flight effort (e.g., flight distance, duration, and measures of efficiency). We also examined whether relationships between flight and immune measures depended on reproductive investment by experimentally controlling whether monarchs were reproductive or in state of reproductive diapause (having atrophied reproductive organs) prior to flight. Of the three immune responses we measured, hemocyte concentration (the number of immune cells) was lower in flown monarchs relative to controls but increased with flight distance among flown monarchs; the other two immune measures showed no relationship to monarch flight. We also found that monarchs that were reproductively active were less efficient fliers, as they exerted more power during flight than monarchs in reproductive diapause. However, reproductive status did not modify relationships between flight and immune measures. Results of this study add to a growing body of work suggesting that migratory monarchs—like some other animals that travel vast distances—can complete their journeys with efficient use of resources and minimal costs.
Servicemen’s Perceptions of Male Sexual Assault and Barriers to Reporting During Active Component and Reserve/National Guard Military Service

Despite growing recognition of the high rates of sexual violence experienced by men serving in the U.S. military, male victimization, specifically sexual assault in military (SAIM), is an understudied topic. We qualitatively describe servicemen’s awareness and perceptions of male SAIM, and their understanding of common barriers to servicemen reporting sexual assault. Participants included Midwestern Active Component and Reserve and National Guard servicemen, actively serving or Veteran, who had returned from Iraq or Afghanistan deployments during Operation Enduring/Iraqi Freedom eras. Eleven focus groups were held with 34 servicemen (20 Reserve/National Guard and 14 Active Component). Qualitative analyses used inductive and deductive techniques. Servicemen reported a lack of awareness of male SAIM, a tendency to blame or marginalize male victims, and substantial barriers to reporting sexual assault. Reserve/National Guard participants emphasized barriers such as a perception of greater stigma due to their unique status as citizen-soldiers, an ethos of unit conformity and leadership modeling, and a lack of confidence in leadership and the SAIM reporting process. In contrast, Active Component servicemen emphasized the deployment location and sex of victim and perpetrator as key reporting barriers. Findings make an important contribution to the scant literature on risk and protective factors for male SAIM and servicemen’s perceptions of sexual violence and assault reporting barriers by their service type and location. This work has implications for routine screening for sexual violence experiences of male service members and Veterans. Providers’ knowledge of gender stereotypes regarding sexual assault, assault risks and experiences of deployed servicemen, and potential barriers to SAIM disclosure is vital for patient-centered care delivery. Additional research to address factors that influence post-SAIM care engagement of males is indicated.
Predicting the benefit of binaural cue preservation in bilateral directional processing schemes for listeners with impaired hearing

Linked pairs of hearing aids offer various possibilities for directional processing providing adjustable trade-off between improving signal-to-noise ratio and preserving binaural listening. The benefit depends on the processing scheme, the acoustic scenario, and the listener’s ability to exploit binaural cues. Neher et al. (2017) investigated candidacy for different bilateral processing schemes for 20 elderly listeners with symmetric and 19 age matched listeners with asymmetric hearing thresholds below 2 kHz. The acoustic scenarios consisted of a frontal target talker presented against two intelligible or unintelligible speech maskers from ±60° azimuth. In this study, the speech reception threshold (SRT) data were compared to predictions of the binaural speech intelligibility model (BSIM; Beutelmann et al., 2010), which was used to model pure better-ear-glimpsing as well as additional binaural unmasking. The speech intelligibility index (SII), which served as backend of BSIM, was calibrated to an individual reference value at the SRT for each listener. This reference value mirrors the amount of acoustical information needed by the listener to achieve the SRT and correlated with the listeners’ ability to process temporal fine structure. BSIM revealed a benefit due to binaural processing in well-performing listeners when processing provided low-frequency interaural timing cues.
Directional emitter and beam splitter based on self-collimation effect

We present a self-collimation-based directional emitter and compact beam splitters in a two-dimensional photonic crystal by using the surface modification method. The simulation results show that highly directional emission with a small angular divergence is achieved over a relative bandwidth of about 10.2%. Furthermore, by only modifying the monolayer structure of the output surface, the compact beam splitters, including the Y-shaped, one-to-three, and one-to-five structures are realized. Such beam splitters have remarkable properties such as symmetrical energy distribution and high transmission.
A three-stage model for closed-loop supply chain configuration under uncertainty

In this paper, a general closed-loop supply chain (CLSC) network is configured which consists of multiple customers, parts, products, suppliers, remanufacturing subcontractors, and refurbishing sites. We propose a three-stage model including evaluation, network configuration, and selection and order allocation. In the first stage, suppliers, remanufacturing subcontractors, and refurbishing sites are evaluated based on a new quality function deployment (QFD) model. The proposed QFD model determines the relationship between customer requirements, part requirements, and process requirements. In addition, the fuzzy sets theory is utilised to overcome the uncertainty in the decision-making process. In the second stage, the closed-loop supply chain network is configured by a stochastic mixed-integer nonlinear programming model. It is supposed that demand is an uncertain parameter. Finally in the third stage, suppliers, remanufacturing subcontractors, and refurbishing sites are selected and order allocation is determined. To this end, a multi-objective mixed-integer linear programming model is presented. An illustrative example is conducted to show the process. The main novel innovation of the proposed model is to consider the CLSC network configuration and selection process simultaneously, under uncertain demand and in an uncertain decision-making environment.
Designing Location-based Augmented Reality Games for Urban Tourism: A Conceptual Framework

We have lately experienced a commercialisation of location-based augmented reality games (LBARGs). However, we have to acknowledge that games like Ingress are not primarily designed to enhance tourism experiences, but can be used as a test bed to improve the design of LBARGs to enrich tourist experiences. This study explores how LBARGs should be designed to enhance tourists’ on-site experiences with these games by proposing a conceptual engagement framework to inform future location-based game design. The framework emphasises the relationship of players, game and the tourism context, which is based on six traits.
StackInTheFlow: Behavior-Driven Recommendation System for Stack Overflow Posts

Developer behavior in the IDE, including commands and events and complementing the active source code, provides useful context to in-IDE recommendation systems. This paper presents Stack-In The Flow, a tool that generates interpretable queries to Stack Overflow, and recommends Stack Overflow posts when a developer is observed to be facing difficulty, defined by encountering error messages or not appearing to make progress. StackInTheFlow monitors clicks on its retrieved results, and, over time, personalizes the retrieved posts to a specific set of Stack Overflow tags. Video: http://bit.ly/sitfdemo
Weighting of genomic and pedigree relationships in single step evaluation of carcass traits in Australian sheep.

An issue for implementation of single step genomic evaluations is how to weight genomic and pedigree relationships in modelling genetic co-variance. A weighting parameter lambda ranging between 0 and 1 can be used in the statistical model, with higher values corresponding to greater weighting of genomic information. We investigated appropriate values of lambda for a range of carcass traits in terminal sire sheep breeds, using the accuracy and bias of genomic prediction of breeding values as criteria. The accuracy generally increased with lambda, although the “optimal” value of lambda at the maximum accuracy varied widely, covering almost the entire range of possible values across traits. Accuracy typically approached an asymptote towards the optimal lambda, so a wide range of values could be used with minimal loss of prediction accuracy. The bias in Estimated Breeding Values (EBVs) increased with lambda, such that EBVs over-predicted phenotypic performance at high values of lambda.
Ventilation inhomogeneity in infants with recurrent wheezing

Background The care of infants with recurrent wheezing relies largely on clinical assessment. The lung clearance index (LCI), a measure of ventilation inhomogeneity, is a sensitive marker of early airway disease in children with cystic fibrosis, but its utility has not been explored in infants with recurrent wheezing. Objective To assess ventilation inhomogeneity using LCI among infants with a history of recurrent wheezing compared with healthy controls. Methods This is a case–control study, including 37 infants with recurrent wheezing recruited from outpatient clinics, and 113 healthy infants from a longitudinal birth cohort, the Canadian Healthy Infant Longitudinal Development study. All infants, at a time of clinical stability, underwent functional assessment including multiple breath washout, forced expiratory flows and body plethysmography. Results LCI z-score values among infants with recurrent wheeze were 0.84 units (95% CI 0.41 to 1.26) higher than healthy infants (mean (95% CI): 0.26 (−0.11 to 0.63) vs −0.58 (−0.79 to 0.36), p<0.001)). Nineteen percent of recurrently wheezing infants had LCI values that were above the upper limit of normal (>1.64 z-scores). Elevated exhaled nitric oxide, but not symptoms, was associated with abnormal LCI values in infants with recurrent wheeze (p=0.05). Conclusions Ventilation inhomogeneity is present in clinically stable infants with recurrent wheezing.