Miracle-dz/UniFAR-FTUs huggingface dataset:
Online Fault Diagnosis of Motor Bearing via Stochastic-Resonance-Based Adaptive Filter in an Embedded System

Digital signal processing algorithms are widely adopted in motor bearing fault diagnosis. However, most algorithms are developed on desktop platforms, and their focus is on the analysis of offline captured signals. In this paper, a simple and easily implemented algorithm running on an embedded system is proposed for the online fault diagnosis of motor bearing. The core part of the algorithm is a stochastic-resonance-based adaptive filter that realizes signal denoising and adaptation of the filter coefficient. Processed by the filter, the period of the purified signal is obtained, and then the fault type of the motor bearing is identified. The proposed method has distinct merits, such as low computational cost, online implementation, contactless measurement, and availability for various speed motors. This paper provides a simple, flexible, and effective solution for conducting motor bearing diagnosis on an embedded/portable device. The algorithm proposed is validated by a brushless dc motor and a brushed dc motor fabricating with defective/healthy support bearings.
Kernel Convolution Model for Decoding Sounds from Time-Varying Neural Responses

In this study we present a kernel based convolution model to characterize neural responses to natural sounds by decoding their time-varying acoustic features. The model allows to decode natural sounds from high-dimensional neural recordings, such as magneto encephalography (MEG), that track timing and location of human cortical signalling no invasively across multiple channels. We used the MEG responses recorded from subjects listening to acoustically different environmental sounds. By decoding the stimulus frequencies from the responses, our model was able to accurately distinguish between two different sounds that it had never encountered before with 70% accuracy. Convolution models typically decode frequencies that appear at a certain time point in the sound signal by using neural responses from that time point until a certain fixed duration of the response. Using our model, we evaluated several fixed durations (time-lags) of the neural responses and observed auditory MEG responses to be most sensitive to spectral content of the sounds at time-lags of 250 ms to 500 ms. The proposed model should be useful for determining what aspects of natural sounds are represented by high-dimensional neural responses and may reveal novel properties of neural signals.
Identificació de les vocals tòniques del català. Mètode d'identificació mitjançant les freqüències relatives dels intervals F0~F1, F1~F2 i F2~F3 i la freqüència d'F0 de les vocals.

This research develops a method for vowel identification capable of controlling individual variation. It is grounded on the relation between distinctive features and the acoustic distance of vowel formants, which is obtained through a logarithmic scale –which is how the auditory system perceives sound— and not though a lineal scale. The main innovation concerns the unit of measure: relative frequency. The method was initially applied to the tonic vocalic system of Central Catalan, but it was also tested against the vocalic system of American English for comparative purposes. Finally, a perception test was conducted of synthesized vowels following the parameters of relative frequency for each vowel class which were obtained from the identification method.
Unsupervised Detection of Argumentative Units though Topic Modeling Techniques

In this paper we present a new unsupervised approach, “Attraction to Topics” – A2T , for the detection of argumentative units, a sub-task of argument mining. Motivated by the importance of topic identification in manual annotation, we examine whether topic modeling can be used for performing unsupervised detection of argumentative sentences, and to what extend topic modeling can be used to classify sentences as claims and premises. Preliminary evaluation results suggest that topic information can be successfully used for the detection of argumentative sentences, at least for corpora used for evaluation. Our approach has been evaluated on two English corpora, the first of which contains 90 persuasive essays, while the second is a collection of 340 documents from user generated content.
Inter-domain cross-linking and molecular modelling of the hairpin ribozyme.

The hairpin ribozyme is a small catalytic RNA composed of two helical domains containing a small and a large internal loop and, thus, constitutes a valuable paradigm for the study of RNA structure and catalysis. We have carried out molecular modelling of the hairpin ribozyme to learn how the two domains (A and B) might fold and approach each other. To help distinguish alternative inter-domain orientations, we have chemically synthesized hairpin ribozymes containing 2'-2' disulphide linkages of known spacing (12 or 16 A) between defined ribose residues in the internal loop regions of each domain. The abilities of cross-linked ribozymes to carry out RNA cleavage under single turnover conditions were compared to the corresponding disulphide-reduced, untethered ribozymes. Ribozymes were classed in three categories according to whether their cleavage rates were marginally, moderately, or strongly affected by cross-linking. This rank order of activity guided the docking of the two domains in the molecular modelling process. The proposed three-dimensional model of the hairpin ribozyme incorporates three different crystallographically determined structural motifs: in domain A, the 5'-GAR-3'-motif of the hammerhead ribozyme, in domain B, the J4/5 motif of group I ribozymes, and connecting the two domains, a "ribose zipper", another group I ribozyme feature, formed between the hydroxyl groups of residues A10, G11 of domain A and C25, A24 of domain B. This latter feature might be key to the selection and precise orientation of the inter-domain docking necessary for the specific phosphodiester cleavage. The model provides an important basis for further studies of hairpin ribozyme structure and function.
Competition of Listeria monocytogenes Serotype 1/2a and 4b Strains in Mixed-Culture Biofilms

ABSTRACT The majority of Listeria monocytogenes isolates recovered from foods and the environment are strains of serogroup 1/2, especially serotypes 1/2a and 1/2b. However, serotype 4b strains cause the majority of human listeriosis outbreaks. Our investigation of L. monocytogenes biofilms used a simulated food-processing system that consisted of repeated cycles of growth, sanitation treatment, and starvation to determine the competitive fitness of strains of serotypes 1/2a and 4b in pure and mixed-culture biofilms. Selective enumeration of strains of a certain serotype in mixed-culture biofilms on stainless steel coupons was accomplished by using serotype-specific quantitative PCR and propidium monoazide treatment to prevent amplification of extracellular DNA or DNA from dead cells. The results showed that the serotype 1/2a strains tested were generally more efficient at forming biofilms and predominated in the mixed-culture biofilms. The growth and survival of strains of one serotype were not inhibited by strains of the other serotype in mixed-culture biofilms. However, we found that a cocktail of serotype 4b strains survived and grew significantly better in mixed-culture biofilms containing a specific strain of serotype 1/2a (strain SK1387), with final cell densities averaging 0.5 log10 CFU/cm2 higher than without the serotype 1/2a strain. The methodology used in this study contributed to our understanding of how environmental stresses and microbial competition influence the survival and growth of L. monocytogenes in pure and mixed-culture biofilms.
Operational aspects of linear lambda calculus

It is proved that the standard sequent calculus proof system of linear logic is equivalent to a natural deduction style proof system. The natural deduction system is used to investigate the pragmatic problems of type inference and type safety for a linear lambda calculus. Although terms do not have a single most-general type (for either the standard sequent presentation or the natural deduction formulation), there is a set of most-general types that may be computed using unification. The natural deduction system also facilitates the proof that the type of an expression is preserved by any evaluation step. An execution model and implementation is described, using a variant of the three-instruction machine. A novel feature of the implementation is that garbage-collected nonlinear memory is distinguished from linear memory, which does not require garbage collection and for which it is possible to do secure update in place. <<ETX>>
Disciplining the conduct of young people in compulsory education policy and practice

ABSTRACT Disciplining and pastoral power are central to the strategies and practices of intervening in the lives of young people deemed at risk of disengaging from school, or not completing their compulsory education. As an expression of power concerned with young people's welfare and self-improvement, disciplining and pastoral practices push young people towards greater responsibilism and employability. From 2004 to 2008, the State Government of Western Australia embarked on legislative change and policy implementation to increase the minimum compulsory school leaving age from 15 to 17. This facilitated a programme of interventions with some groups of young people deemed at risk of not meeting the newly minted minimum education requirements. Drawing on governmentality theory, research into this policy identifies and problematises its disciplining and pastoral practices. Interview data and policy documents are analysed to reveal the way that practices with young people, although framed as empowering and benign, worked to further connect them with the imperatives of neoliberalism.
Social structure of the mound‐building mouse Mus spicilegus revealed by genetic analysis with microsatellites

The Mound‐building mouse Mus spicilegus possesses a unique behaviour amongst mice. It constructs large earthen mounds and associated nesting chambers which serve to store food for immature individuals during the winter nesting period. We have used genetic analysis of four autosomal and four X‐linked microsatellite loci to determine relationships between individuals inhabiting 40 mounds in Bulgaria. We show that, in almost all cases, individuals in a mound are the product of multiple parentage. We estimate the minimum number of males and female parents contributing offspring to each mound and demonstrate that at least two male and two female parents contribute offspring to a minimum of seven mounds. Analyses of relatedness coefficients and allele sharing values demonstrate that parents of different sibships within mounds are more related than if they had been chosen at random from the population and suggest that it is the female parents that contribute this excess relatedness. These results suggest that the mechanism by which individuals congregate to build mounds is kin‐based and that the evolution of mound building and communal nesting in M. spicilegus is due in part to kin selection. This study represents a novel approach to the study of mammalian behavioural ecology. We have used a genetic dataset to construct an outline of social structure in the absence of behavioural data. These inferences can now be used to direct further work on this species.
Smart n-grid energy management with an open UPQC

In the last years, in the new smart grid framework, the need of enabling and managing the interaction between final users and the main grid has become mandatory. The effective level of interaction depends on the real flexibility of the consumer power demand with respect to the main grid and this level can be increased in case of nano-grids (n-grids), like those of LV domestic customers, via the application of special devices, like the Open Unified Power Quality Conditioner (Open UPQC). Even if this device has been designed for different tasks (PQ, back-up, etc.), the paper is focused on its application in domestic n-grids, with the chief functions of peak-shaving and load-levelling, aimed mainly to reduce the costs of electricity delivery for LV domestic customers. As a consequence, it becomes a tool to support the interaction with the main grid. To assess the advantage of its application, a wide survey on domestic appliances included in a real w-grid has been made, to know the effective power profile, the real peak and average value, basing on which the contractual power is chosen. The analysis of monitoring data shows the potentiality of the application.
Decisions and Exchange

A formal theory is developed to deal with some aspects of social exchange behavior. Values are defined as "givens," and the exchange of values is defined as "decision-making. " Exchange decisions can follow one or more "exchange rules"-rationality, reciprocity, altruism, status consistency, or competition. Formal definitions are developed for these rules using concepts from game theory. From the definitions and the assumption that exchange rules operate as social norms, a number of hypotheses about the properties of exchange situations and behavior are derived for two-person exchanges.
Review of established and innovative detection methods for carbapenemase‐producing Gram‐negative bacteria

The minimal antibiotic options for carbapenemase‐producing Gram‐negative bacteria necessitate their rapid detection. A literature review of a variety of phenotypic and genotypic methods is presented. Advances in culture methods and screening media are still subject to long incubation hours. Biochemical methods have shorter turnaround times and higher sensitivities and specificities, but cannot differentiate between various types and variants. Spectrophotometric methods are cheap and efficient, but are uncommon in many clinical settings, while the MALDI‐TOF MS is promising for species identification, typing and resistance gene determination. Although next generation sequencing (NGS) technologies provide a better platform to detect, type and characterize carbapenem‐resistant bacteria, the different NGS platforms, the large computer memories and space needed to process and store genomic data and the nonuniformity in data analysis platforms are still a challenge. The sensitivities, specificities and turnaround times recorded in the various studies reviewed favours the use of the biochemical tests (Carba NP or Rapid Carb screen tests) for the detection of putative carbapenemase‐producing isolates. MALDI‐TOF MS and/or molecular methods like microarray, loop‐mediated isothermal amplification and real‐time multiplex PCR assays could be used for further characterization in a reference laboratory. NGS may be used for advanced epidemiological and molecular studies.
Intrinsic Motivation in Microcomputer Games

AbstractIntrinsic motivational effects of an instructional microcomputer game (Mission:Algebra™) were compared with those of a noninstructional microcomputer game (Lode Runner™). The study examined Challenge, Curiosity, Control, and Fantasy aspects of the two games as factors of intrinsic motivation. It also examined differences in intrinsic motivation between boys and girls, among players with different levels of Perceived Creativity (Williams, 1980), and among subgroups formed by these factors. At the outset, motivation for the noninstructional game was higher than for the instructional game and consisted mainly of Challenge and Curiosity. But it dropped significantly as students gained experience. Motivation for the instructional game on the other hand, did not drop with experience but increased marginally and consisted mainly of the factor labelled Control. There were no significant differences between boys and girls in their level of motivation. There were no significant interactions with levels of P.
Comparative transduction mechanisms of hair cells in the bullfrog utriculus. II. Sensitivity and response dynamics to hair bundle displacement.

1. Hair cells in whole-mount in vitro preparations of the utricular macula of the bullfrog (Rana catesbeiana) were selected according to their macular location and hair bundle morphology. The sensitivity and response dynamics of selected hair cells to natural stimulation were examined by recording their voltage responses to step and sinusoidal hair bundle displacements applied to their longest stereocilia. 2. The voltage responses of 31 hair cells to sinusoidal hair bundle displacements were characterized by their gains and phases, taken with respect to peak hair bundle displacement. The gains of Type B and Type C cells at both 0.5 and 5.0 Hz were markedly lower than those of Type F and Type E cells. Phases, with the exception of Type C cells, lagged hair bundle displacement at 0.5 Hz. Type C cells had phase leads of 25-40 degrees. At 5.0 Hz, response phases in all cells were phase lagged with respect to those at 0.5 Hz. Type C cells had larger gains and smaller phase leads at 5.0 Hz than at 0.5 Hz, suggesting the presence of low-frequency adaptation. 3. Displacement-response curves, derived from the voltage responses to 5.0-Hz sinusoids, were sigmoidal in shape and asymmetrical, with the depolarizing response having a greater magnitude and saturating less abruptly than the hyperpolarizing response. When normalized to their largest displacement the linear ranges of these curves varied from < 0.5 to 1.25 microns and were largest in Type B and smallest in Type F and Type E cells. Sensitivity, defined as the slope of the normalized displacement-response curve, was inversely correlated with linear range. 4. The contribution of geometric factors associated with the hair bundle to linear range and sensitivity were predicted from realistic models of utricular hair bundles created using morphological data obtained from light and electron microscopy. Three factors, including 1) the inverse ratio of the lengths of the kinocilium and longest stereocilia, representing the lever arm between kinociliary and stereociliary displacement; 2) tip link extension/linear displacement, largely a function of stereociliary height and separation; and 3) stereociliary number, an estimate of the number of transduction channels, were considered in this analysis. The first of these factors was quantitatively more important than the latter two factors and their total contribution was largest in Type B and Type C cells. Theoretical models were also used to calculate the relation between rotary and linear displacement. (ABSTRACT TRUNCATED AT 400 WORDS)
Talking with robots about objects: A system-level evaluation in HRI

We present the design process, realization and evaluation of a robot system for interactive object learning. The system-oriented evaluation, in particular, addresses an open problem for the evaluation of systems, where overall user satisfaction depends not only on the performance of the parts, but also on their combination, and on user behavior. Based on the PARADISE method known from spoken dialog systems, we have defined and applied internal and external metrics for fine-grained and largely automatable identification of such relationships. Through evaluation with n=28 subjects, indicator functions explaining up to 55% of variation in several satisfaction metrics were found. Furthermore, we demonstrate that the system's interaction style reduces the need for instruction and successfully recovers partial failures.
Sensitivity of myelomonocytic leukemia cells to arsenite-induced cell cycle disruption, apoptosis, and enhanced differentiation is dependent on the inter-relationship between arsenic concentration, duration of treatment, and cell cycle phase.

Arsenite treatment has been found to induce clinical remission in patients with acute promyelocytic leukemia. Although the potential therapeutic value of arsenite may lie in triggering apoptosis, it has not been established that cytotoxicity is the sole mechanism of action. We have used a myelomonocytic leukemia cell line (U937) to characterize the concentration-dependent effects of arsenite on cell growth, viability, apoptosis, and differentiation. Arsenite has multiple effects on U937 cells. Low concentrations of arsenite (i.e., < or = 1 microM) potentiate vitamin-D(3)-induced differentiation. Two markers of monocyte differentiation, Mac-1 expression and nitroblue tetrazolium reduction, are increased in arsenite-exposed, D(3)-costimulated cells. Concentrations of arsenite >10 microM rapidly induce the death of cells irrespective of cell cycle phase. Intermediate concentrations of arsenite (i.e., 5 to 10 microM) are cytostatic initially. Cell cycle analysis using elutriated, synchronous cell populations revealed that intermediate concentrations of arsenite delay both G(1) and G(2) transit. G(2) cells appear to be most sensitive to arsenite, in that transit through G(2)/M is more delayed than transit through G(1), and apoptosis is induced in these cells as they emerge from an aberrant G(2)/M. Arsenite-induced apoptosis was caspase-3 dependent. Arsenite-mediated cytotoxicity was reduced in the presence of the broad caspase inhibitor Z-Val-Ala-DL-Asp-fluoromethylketone; however, caspase inhibition did not reverse arsenite-induced cytostasis. Thus, arsenite has multiple effects on U937 cells that are dependent on concentration and cell cycle phase. Specifically, cell cycle transit and differentiation are more sensitive to arsenite than is the induction of apoptosis.
“Outposts of Britain” the General Post Office and the birth of a corporate iconic brand, 1930-1939

Purpose This paper aims to examine the development of an iconic corporate brand by the General Post Office (GPO) in Britain in the 1930s by adapting the work of Douglas Holt (2004). Design/methodology/approach The paper uses a historical approach by developing a historical case study. It combines this historical approach with Holt’s theory and writing on iconic branding and the current literature on corporate identity, corporate branding and corporate communication. Findings The study argues that the GPO was able to construct an iconic brand in the interwar period (1918-1939) by responding to anxieties in British society generated by social tension and fears of decline. This was facilitated by the establishment of a public relations department, which created “myths” of national identity and imperial unity through telecommunications, and national strength through technology. These myths assuaged social anxieties and enabled the GPO to construct an iconic corporate brand. Originality/value This paper provides an important insight into iconic branding. It examines corporate rather than product branding, where research has predominantly focused. It also combines cultural branding theory with historical analysis and provides an adapted approach to Holt’s myth market model (1994, p. 58).
Resources, Aspirations, and Emerging Multinationals

Drawing on the resource-based view and the behavioral theory of the firm, we examine how resources and aspirations affect rapid internationalization of firms from emerging economies. Using a 5-year panel from 257 publicly listed manufacturing firms from China, we find that neither technological resources nor marketing resources—two knowledge-based drivers traditionally identified to be behind internationalization—directly drive these firms’ growth in internationalization. Instead, we find that emerging multinationals’ performance relative to aspirations has a U-shaped impact on their growth in internationalization. In addition, technological resources amplify the U-shaped effect of performance relative to aspirations, while marketing resources weaken the effect.