Miracle-dz/UniFAR-FTUs huggingface dataset:
System Weight Comparison of Electric Machine Topologies for Electric Aircraft Propulsion

An important thrust in current aerospace research is aircraft electrification, including propulsion system electrification. For an electrified propulsion system to provide net benefit over conventional propulsion, high specific power, power density, and efficiency requirements of the electrical system must be met. This paper expands on previous work by comparing electric machine topologies for electric aircraft propulsors while considering tradeoffs in the power electronics, fault response equipment, and gearbox components. Permanent magnet synchronous machine (PMSM), brushless DC machine (BLDC), switched reluctance machine (SRM), brushless doubly-fed reluctance machine (BDFRM), and induction machine (IM) topologies are explored. A parametric design tool including finite element analysis is used to create a viable design for each machine type. Next, analytical sizing equations are used to scale the designed machines to varying operating speeds and aspect ratios. In addition, gearbox, power electronics, circuit breaker, clutch, thermal management system, and energy storage weights are predicted based on current power densities of research designs. It is well established that PMSMs have outstanding power density and this study shows that when considering additional drive and fault response components, PMSMs still maintain the weight advantage.
The "third"-order barrier for technology-integration instruction: Implications for teacher education

Technology integration is a major trend in contemporary education practice. When undertaking technology integration in classrooms, a first-order barrier and a second-order barrier, as proposed by Ertmer (1999), can hinder its implementation. The first-order barrier is external, such as lack of adequate access, time, training and institutional support. The second-order barrier includes teachers' personal and fundamental beliefs such as teachers' pedagogical beliefs, technology beliefs, willingness to change. This paper argues that the lack of design thinking by teachers may be the "third"-order barrier for technology integration.
Near-wall behaviour of implicit large eddy simulations

This paper investigates the accuracy of implicit large eddy simulations (ILES) in compressible turbulent boundary layers (TBL). ILES are conducted in conjunction with Monotonic Upstream-Centred Scheme for Conservation Laws (MUSCL) and Weighted Essentially Non-Oscillatory (WENO), ranging from 2nd to 9th-order. The excess artificial dissipation occurring at low Mach numbers is counter-balanced by using low Mach corrections. The study concludes that high-order ILES provide accurate predictions of TBL even on relatively coarse grids.
ConfVD: System Reactions Analysis and Evaluation Through Misconfiguration Injection

In recent years, misconfigurations have become one of the major causes of software system failures, resulting in numerous service outages. What is worse, misconfigurations are also costly to diagnose and troubleshoot. This remains a great challenge for sysadmins (system administrators) to detect, diagnose, or troubleshoot these misconfigurations. Unlike software bugs, misconfigurations are more vulnerable to sysadmins’ mistakes. Developers and researchers are attempting to improve system reactions to misconfigurations to ease the burden of sysadmins’ diagnoses. Such efforts would greatly benefit from the techniques that can comprehensively detect bad system reactions through injected misconfigurations. Unfortunately, few such studies have achieved the above goal in the past, primarily because they only relied on generic alterations and failed to find a way to systematically generate misconfigurations. In this paper, we study eight mature open-source and commercial software packages and summarize a fine-grained classification of option types. Based on this classification, we use Augmented Backus–Naur Form to summarize and extract syntactic and semantic constraints of each type. In order to generate comprehensive misconfigurations in the test systems, we propose misconfiguration generation methods for our constraints. We implement a tool named Configuration Vulnerability Detector (ConfVD) to conduct misconfiguration injection and further analyze the systems’ reaction abilities to various misconfigurations. We carried out comprehensive analyses upon Apache Httpd, MySQL, PostgreSQL, and Yum. The results of our analysis show that our option classification covers 96% of 1582 options from the above-mentioned systems. Our constraints are more fine grained than previous works and their accuracy was found to be 91% (ascertained by manual verification). Our technique could improve generic alteration approaches without constraints, and we found that ConfVD could find nearly three times the bad reactions that were found by ConfErr. In total, we found 65 bad reactions from the systems being tested and our fine-grained constraints contributed 27.7% more bad reactions than techniques only using coarse-grained constraints.
Modeling the structure and activity of comet nuclei

Numerical simulation of the structure and evolution of a comet nucleus is reviewed from both the mathematical and the physical point of view. Various mathematical procedures and approximations are discussed, and different attempts to model the physical characteristics of cometary material, such as thermal conductivity, permeability to gas flow, drag of dust grains, and dust mantling, are described. The evolution and activity of comets is shown to depend on different classes of parameters: defining parameters, such as size and orbit; structural parameters, such as porosity and composition; and initial parameters, such as temperature and live radioisotope content. Despite the large number of parameters, general conclusions or common features appear to emerge from the numerous model calculations — for different comets — performed to date. Thus, the stratified structure of comet nuclei, volatile depletion, and the role of crystallization of ice in cometary outbursts are discussed.
Phase Retrieval via a Modified Null Vector Estimator

In the phase retrieval problem, an unknown vector or image is to be recovered from phaseless measurements. This paper puts forth a new initialization estimator called $\tau-$ modified Null Initialization (TNI) for non-convex phase retrieval problem. The proposed TNI method provide accurate and stable initialization for phase retrieval with the information-theoretic limit number of samples. Its average relative error exponentially reduces as the oversampling ratio $m/n$ grows, which can improve the performance of existing hybrid optimization method of phase retrieval. Experimental results clearly demonstrate the superiority of our proposed TNI estimator, which not only achieves a lower relative error of initialization but also outperforms the traditional methods in terms of accuracy and noise stability when measurements contaminated with noise.
Fast Algorithm of Wideband Electromagnetic Scattering of Homogeneous Dielectric Targets

The PMCHWT-IE-FFT-BURA is applied to the wideband analysis of electromagnetic scattering property of homogeneous targets. Over the broad frequency band, the fast computation is achieved by the Maehly expansion on the basis of the Chebyshev approximation of the electric and magnetic currents. On the Chebyshev sampling points, PMCHWT-IE-FFT greatly reduces the memory requirement by sparsely storing the impedance matrix and decreases the computational time to the greatest degree by block acceleration of the matrix-vector product. Finally, numerical results show that the proposed method can make efficient analysis of wideband property of homogeneous targets without sacrificing accuracy much .
Telecare:legal, ethical and socioeconomic factors

Legal, ethical and socio-economic factors in community telecare differ from those pertaining to telemedicine and are examined with reference to older persons’ care. Issues discussed include equipment liability, service malpractice, technical and service standards, consent (including the Mental Capacity Act), research, trials, human factors, dependence, privacy, security, accessibility, quality, affordability, social inequalities and community factors.
The Gender Binary Meets the Gender-Variant Child

Until recently, raising a young child as transgender was culturally unintelligible. Most scholarship on transgender identity refers to adults’ experiences and perspectives. Now, the increasing visibility of gender-variant children, as they are identified by the parents who raise them, presents new opportunities to examine how individuals confront the gender binary and imagine more gender-inclusive possibilities. Drawing on Foucault’s notion of “truth regime” to conceptualize the regulatory forces of the gender binary in everyday life, this work examines the strategies of 24 such parents, who represent 16 cases of childhood gender variance. Specifically, I analyze three practices—“gender hedging,” “gender literacy,” and “playing along”—through which these parents develop a critical consciousness about gender binary ideology and work to accommodate their children’s nonconformity in diverse discursive interactions. Taken together, their newfound strategies and perspectives subvert traditional conceptions of “gender-neutral” or “feminist” parenting, and reveal new modes of resistance to the normative transmission and regulation of gender practices.
Numerical Simulation of Interaction between Fluid and Vapor Structures in Multiphase Flow around Hydrofoil

This work deals with the numerical simulation of interaction of fluid and vapor structures on NACA 2412 hydrofoil during the partial cavitation oscillation. This interaction is supposed to be the most important reason for the cavity shedding when, in a certain range of the cavitation numbers, some “resonance” effect can be reached. The incidence angle is 8? and the Reynolds number is 1.56 × 106. The hydrofoil with the span/chord ratio of 1.25 corresponds to the experiments carried out in the cavitation tunnel. The Detached Eddy Simulation (DES) is used on full 3D geometry of the straight NACA 2412 hydrofoil to capture the strong influence of side-wall effects. Real properties of water including estimated content of undissolved air are con-sidered to affect the compressibility of the mixture and its speed of sound. The link between strong pressure pulses during the cavity cycles and the interaction of fluid and vapor structures is discussed in detail.
A Phenomenological Study: The Impacts of Developing Phonetic Awareness through Technological Resources on English Language Learners' (ELL) Communicative Competences.

Throughout our experience within the English Language Teaching (ELT) field and while acquiring a second language in English a Foreign Language (EFL) and English as a Second Language (ESL) settings, we have noticed that one of the main perceived challenges for English Language Learners (ELLs) is to effectively communicate. Most of the time, this issue comes from the concern or fear to mispronounce any word, considering that English manages some variations on its phonetic alphabet, which differs from other languages. Therefore, it becomes necessary for ELLs the acquisition of English phonemic awareness to improve their pronunciation, fluency, and confidence when orally communicating in English. Basing on the interlanguage hypothesis, phonemic awareness, English phonology theories, and Information and Communication Technology (ICT) tools and resources, this study aims to analyze: a. ) to what extend does phonemic awareness development influence on students’ communication skills? b. ) How effective is the implementation of technology to develop phonemic awareness? To do so, a phenomenological study, based on the constructivism epistemology, was conducted including a deep revision of the existed literature, various studies previously applied, and the researchers’ experience within the teaching and professional field to examine the impacts of developing phonetic awareness through technological resources on English language learners’ (ELL) communicative competences.
Exploring of Third-Order Cascaded Multi-bit Delta- Sigma Modulator with Interstage Feedback Paths

The emergence of mixed-signal integrated circuit results in the tremendous increase in the numbers of high performance data converters with the trend toward high resolution and large bandwidth. Delta-Sigma modulator, employing oversampling technique, provides high output precision by shaping the in-band quantization noise to the out-of-band. This paper explores characteristics of Thirdorder cascaded multibit Delta-Sigma modulator with interstage feedback paths using behavioural simulation. Comparisons between mathematical models with behavioural models are demonstrated for theoretical analysis. Simulation models with various non-ideal sources of Delta-Sigma modulator are presented. A comparative analysis ofnon-ideal effects including sampling jitter noise, integrator noise, integrator nonidealities, and capacitor mismatch on a cascaded architecture with interstage feedback paths of a Thirdorder multi-bit Delta-Sigma modulator are also discussed.
The roots of categorization : 4-month-old infants extract feature correlations to form audio-visual categories

rules in comparison to a uni-modal presentation. Additional evidence linking auditory (and specifically linguistic) information with visual information has shown that cross-modal associations may influence phonetic learning. Yeung and Werker (2009) showed that 9-month-old infants—who typically fail to discriminate non-native phonetic categories (Werker & Tees, 1984)—succeed at discriminating non-native phonetic contrasts when each category is synchronously presented with a distinctive visual object. The contrasts used were the Hindi phonetic contrast /da/, a dental alveolar stop consonant, and /Da/, a retroflex alveolar stop consonant. To native English speakers, this contrast is uninformative/not discriminable, as both sounds are categorized as a single /da/. Yeung and Werker found that this non-native contrast was discriminable by the 9-month-old infants who received consistent, synchronous visual cues, suggesting that the visual information helped infants classify the acoustic
Effects of Ginsomin ® on Selected Behaviours in Mice

Objective: To study the effects of ginsomin® on behaviours of healthy mice using the open-field, Y-maze, eight-arm radial maze and the elevated-plus maze. Method: Groups of mice were administered vehicle (distilled water), scopolamine (2 mg/kg), diazepam (2 mg/kg), or one of two doses of ginsomin (0.5 and 1.0 mg/kg) for 21 days. Behavioural assessments were carried out after the first and final dose of treatment. Result: Repeated administration of ginsomin was associated with a decrease in weight gain, in comparison to vehicle. In the elevated plus maze (EPM), administration of ginsomin resulted in an increase in time spent in the open arms and number of open arm visits in comparison to vehicle, but not diazepam control. A dose-related increase in open-field horizontal locomotion and rearing behaviours; and improvements in Y-maze and radial arm maze spatial working-memory performances were also observed. However, self-grooming behaviours were significantly reduced after repeated administration. Conclusion: Ginsomin administration in healthy mice is associated with significant behavioural changes; hence, our findings support its perception as a ginseng-containing mixture with profound central nervous system effects.
Determination of optimum seed rate for the production of sesame (Sesamum indicum L.) in the lowlands of North Shewa, Ethiopia

On-farm study was conducted in the lowland areas of Kewot district in the North Shewa Zone, Ethiopia on two sites during 2011 crop season to determine optimum seed rate of sesame. Four seed rates (2, 4, 6 and 8 kg ha-1) of sesame cultivar Adi, were arranged in a randomized complete block design (RCBD) with four replications at each experimental site. The results of analysis of variance showed that location and seed rate had no significant effect on grain yield and plant height. Similarly, interaction of seed rate and location had no significant effect on grain yield, plant height and number of branches plant-1. On the other hand, location and seed rate had significant (p≤0.05) effect in the number of branches plant-1. The maximum number of primary branches plant-1 (3.3) was obtained from the seed rate of 2 kg ha-1 and the minimum number of primary branches plant-1 (2.3) was obtained from the seed rate of 8 kg ha-1. Since the statistical analysis revealed non-significant difference among treatment yields, comparison was made by using total costs that vary. Accordingly, 2- 4 kg ha-1 seed rate found to be optimum for the production of sesame under rain-fed condition around Kewot district and similar areas. Key words: Adi, broadcast, Kewot, Medina, under rain-fed, Yelen crossing.
LEVEL OF PARANOIA AMONG TYPES OF HEARING IMPAIRMENT IN PATIENTS AT TERTIARY CARE ENT CLINIC

Objective: This study aim to examine the level of paranoia among different types of hearing impaired patients. The presumptive hypothesis of that there is no association of increased level of paranoia with regards to its different types. Method: A cross-sectional study was conducted in an ENT clinic of tertiary care hospital. All the cases were thoroughly examined by using pure tone audiometry to differentiate between conductive, sensorineural and mixed hearing loss. They were interviewed and valid version of 20-item paranoia scale was administrated in local language; data were recorded on semi-structured proforma. Results: 103 hearing impaired patients who filled complete questionnaire were assessed. Conductive hearing loss (n=49) having greater paranoid ideation as compared to sensorineural hearing loss (n=45) and mixed hearing loss (n=9). The demographic results revealed that females, below 45 aged, urban locals and unemployed show increased paranoid ideation Conclusion: These findings suggest that conductive hearing loss which started in adulthood poses handicap on person's social life and irregular prospects of employment possibly lead to paranoia.
Signal Reconstruction from Sub-sampled and Nonlinearly Distorted Observations

Faithful short-time acquisition of a sparse signal is still a challenging issue. Instead of an idealized sampling, one has only access to an altered version of it through a measurement system. This paper proposes a reconstruction method for the original sparse signal when the measurement degradation is composed of a nonlinearity, an additive noise, and a sub-sampling scheme. A rational criterion based on a least-squares fitting penalized with a suitable approximation of 10 is minimized using a recent approach guaranteeing global optimality for rational optimization. We provide a complexity analysis and show that the sub-sampling offers a significant gain in terms of computational time. This allows us to tackle practical problems such as chromatography. Finally, experimental results illustrate that our method compares very favorably to existing methods in terms of accuracy in the signal reconstruction.
A Note on Smoking Behavior and Health Risk Taking

This research note presents two economic frameworks to describe the relationship between individual health risk aversion and smoking behavior. Using a large-scale representative data set (GSOEP), direct empirical evidence is found that individuals, who are more health risk taking, are more likely to be smokers and have a higher demand for cigarettes smoked per day. Non-linear specifications of risk taking reveal, however, that the risk effects are only significant for high risk takers. The estimated effects hold also separately for men and women.
Aalborg Universitet On the Evaluation of Entity Profiles

Entity profiling is the task of identifying and ranking descriptions of a given entity. The task may be viewed as one where the descriptions being sought are terms that need to be selected from a knowledge source (such as an ontology or thesaurus). In this case, entity profiling systems can be assessed by means of precision and recall values of the descriptive terms produced. However, recent evidence suggests that more sophisticated metrics are needed, that go beyond mere lexical matching of system-produced descriptors against a ground truth, and that allow for graded relevance and that rewards diversity in the list of descriptors returned. In this note, we motivate and propose such a metric.
Grape Berry cv. Shiraz Epicuticular Wax and Transpiration during Ripening and Preharvest Weight Loss

Preharvest weight loss of Vitis vinifera L. cv. Shiraz berries may be the result of cuticle disruption leading to high transpiration rates relative to earlier stages of ripening. Scanning electron microscopy showed very few but functional stomata on young berries and wax-filled stomata on older berries and, aside from slight cracks along the stomatal protuberance, did not reveal any fissures in the surface of berries that may lead to increased transpiration rates. Preveraison berry epicuticular wax platelets were defined and intricate, while postveraison and shriveled berry surfaces had large areas of amorphous waxes. Postveraison, the area of amorphous wax relative to intricate wax was not correlated with berry age or degree of shrivel. Extraction of surface waxes revealed that total wax on a surface-area basis decreased during veraison then remained stable as the berries ripened and entered the weight-loss phase. Berry transpiration, estimated from loss of fresh weight of detached berries over time, during this final shriveled phase was 16% of the preveraison rate on a per berry basis. Nevertheless, berry transpiration could account for an average 15 mg loss in fresh weight per berry per day. We conclude that weight loss during late ripening of Shiraz berries was not the result of cuticle disruption or high transpiration rates alone. It is hypothesized that decreased vascular flow of water into the berry combined with continued transpiration leads to the weight loss.