Miracle-dz/UniFAR-FTUs huggingface dataset:
Quasi-invariants of Coxeter groups and m-harmonic polynomials

The space of m-harmonic polynomials related to a Coxeter group G and a multiplicity function m on its root system is defined as the joint kernel of the properly gauged invariant integrals of the corresponding generalised quantum Calogero-Moser problem. The relation between this space and the ring of all quantum integrals of this system (which is isomorphic to the ring of corresponding quasiinvariants) is investigated.
High dimensional thresholded regression and shrinkage effect

High dimensional sparse modelling via regularization provides a powerful tool for analysing large‐scale data sets and obtaining meaningful interpretable models. The use of non‐convex penalty functions shows advantage in selecting important features in high dimensions, but the global optimality of such methods still demands more understanding. We consider sparse regression with a hard thresholding penalty, which we show to give rise to thresholded regression. This approach is motivated by its close connection with L0 ‐regularization, which can be unrealistic to implement in practice but of appealing sampling properties, and its computational advantage. Under some mild regularity conditions allowing possibly exponentially growing dimensionality, we establish the oracle inequalities of the resulting regularized estimator, as the global minimizer, under various prediction and variable selection losses, as well as the oracle risk inequalities of the hard thresholded estimator followed by further L2 ‐regularization. The risk properties exhibit interesting shrinkage effects under both estimation and prediction losses. We identify the optimal choice of the ridge parameter, which is shown to have simultaneous advantages to both the L2 ‐loss and the prediction loss. These new results and phenomena are evidenced by simulation and real data examples.
A Structure-Activity Study of Antibacterial Diterpenoids

An analysis of the antibacterial activities of 15 terpenoids, eleven of which were previously described by us and four were extracted from the literature, suggested two structural requirements for activity of these and related compounds: a hydrophobic moiety, consisting of a substituted decalin skeleton, and a hydrophilic region possessing one hydrogen-bond-donor group. These structural requirements are responsible for an optimal insertion of these and related compounds into cell membranes, as suggested by the results of docking some of these compounds into a model phospholipid bilayer.
Revealing Undercover Refinement in UML Modeling

Abstract Although the Abstraction artifact allows for the explicit documentation of the abstraction/refinement relationship in UML models, an important amount of variations of this relationship remains unspecified, in general hidden under other notations. The starting point to enable traceability of requirements across refinement steps is to discover and precisely capture the various forms of the abstraction/refinement relationship, in particular those forms which are hidden in the model. In this article we formally describe a number of undercover refinements and present PAMPERO, a tool integrated in the Eclipse environment, based on the formal definition of refinement. The tool supports the documentation of explicit refinements and the semi-automatic discovering and documentation of hidden refinements. Keywords: Refinement, Modeling Language, Unified Modeling Language, UML, Traceability, Case Tools. Resumen En el lenguaje UML existe un artefacto llamado “Abstraction” que permite la documentacion explicita de la relacion de abstraccion/refinamiento entre modelos. Sin embargo, numerosas variantes de esta relacion permanecen ocultas detras de otras notaciones. El punto de partida para rastrear requerimientos a traves de los pasos de refinamiento definidos en el modelo, es descubrir y capturar precisamente las distintas formas de la relacion de abstraccion/refinamiento, en particular aquellas formas que estan ocultas en el modelo. En este articulo describimos formalmente varias formas de refinamiento encubierto y presentamos a PAMPERO, una herramienta de software integrada en el ambiente Eclipse, basada en la definicion formal de refinamiento. La herramienta soporta la documentacion de refinamientos explicitos y ademas permite descubrir y documentar refinamientos ocultos semi-automaticamente.
Ultrasound-guided continuous femoral nerve block vs continuous fascia iliaca compartment block for hip replacement in the elderly

Background:Continuous femoral nerve block and fascia iliaca compartment block are 2 traditional anesthesia methods in orthopedic surgeries, but it is controversial which method is better. The objective of this study was to compare the practicality, efficacy, and complications of the 2 modalities in hip replacement surgery in the elderly and to assess the utility of a novel cannula-over-needle set. Methods:In this prospective, randomized controlled clinical investigation, 60 elderly patients undergoing hip replacement were randomly assigned to receive either continuous femoral nerve block or continuous fascia iliaca compartment block. After ultrasound-guided nerve block, all patients received general anesthesia for surgery and postoperative analgesia through an indwelling cannula. Single-factor analysis of variance was used to compare the outcome variables between the 2 groups. Results:There was a significant difference between the 2 groups in the mean visual analog scale scores (at rest) at 6 hours after surgery: 1.0 ± 1.3 in the femoral nerve block group vs 0.5 ± 0.8 in the fascia iliaca compartment block group (P < 0.05). The femoral nerve block group had better postoperative analgesia on the medial aspect of the thigh, whereas the fascia iliaca compartment block group had better analgesia on the lateral aspect of the thigh. There were no other significant differences between the groups. Conclusions:Both ultrasound-guided continuous femoral nerve block and fascia iliaca compartment block with the novel cannula-over-needle provide effective anesthesia and postoperative analgesia for elderly hip replacement patients.
ROBUST MULTIGRID SOLUTION OF RANS EQUATIONS WITH TWO-EQUATION TURBULENCE MODELS

The design of a new, truly robust multigrid framework for the solution of steady-state Reynolds-averaged Navier-Stokes (RANS) equations with two-equation turbulence models is presented. While the mean-flow equations and the turbulence model equations are advanced in time in a loosely-coupled manner, their multigrid cycling is strongly coupled (FC-MG). Thanks to the loosely-coupled approach, the unconditionally positive-convergent implicit time integration scheme for two-equation turbulence models (UPC) is used. An extension of the UPC scheme within the multigrid method is proposed. The resulting novel FC-MG-UPC algorithm is nearly free of artificial stabilizing techniques, leading to increased multigrid efficiency. To demonstrate the robustness of the proposed algorithm, it is applied to linear and non-linear two-equation turbulence models. Numerical experiments are conducted, simulating separated flow about the NACA4412 airfoil and transonic flow about the RAE2822 airfoil. Results obtained from numerical simulations demonstrate the strong consistency and case-independence of the method.
Fault Diagnosis of Complex Dynamic Processes by Use of Additive Modular Knowledge Base

In this paper a fault diagnosis method for dynamic processes is proposed. It uses a special modular knowledge base, which consists of separate modules for each faulty condition and the normal condition of the process. Each module stores the most representative features of the training data for a certain faulty state in a special compact form. For such purpose, a representative set of neurons (RSN) is used that is trained by the unsupervised neural-gas learning algorithm. The introduced algorithm for fault diagnosis utilizes the concept of the average minimal distance between a set of newly collected process data and the trained RSN for each faulty condition. The fault diagnosis decision is defined as the most similar (the closest) fault to the new operation data. Real experiments on a laboratory three-buffer-tank-system are used in the paper to prove the correctness and applicability of the proposed fault diagnosis method
Microsaccadic Suppression of Visual Bursts in the Primate Superior Colliculus

Saccadic suppression, a behavioral phenomenon in which perceptual thresholds are elevated before, during, and after saccadic eye movements, is an important mechanism for maintaining perceptual stability. However, even during fixation, the eyes never remain still, but undergo movements including microsaccades, drift, and tremor. The neural mechanisms for mediating perceptual stability in the face of these “fixational” movements are not fully understood. Here, we investigated one component of such mechanisms: a neural correlate of microsaccadic suppression. We measured the size of short-latency, stimulus-induced visual bursts in superior colliculus neurons of adult, male rhesus macaques. We found that microsaccades caused ∼30% suppression of the bursts. Suppression started ∼70 ms before microsaccade onset and ended ∼70 ms after microsaccade end, a time course similar to behavioral measures of this phenomenon in humans. We also identified a new behavioral effect of microsaccadic suppression on saccadic reaction times, even for continuously presented, suprathreshold visual stimuli. These results provide evidence that the superior colliculus is part of the mechanism for suppressing self-generated visual signals during microsaccades that might otherwise disrupt perceptual stability.
Automatic Rewriting of Patient Record Narratives

Patients require access to Electronic Patient Records, however medical language is often too difficult for patients to understand. Explaining records to patients is a time-consuming task, which we attempt to simplify by automating the translation procedure. This paper introduces a research project dealing with the automatic rewriting of medical narratives for the benefit of patients. We are looking at various ways in which technical language can be transposed into patient-friendly language by means of a comparison with patient information materials. The text rewriting procedure we describe could potentially have an impact on the quality of information delivered to patients. We report on some preliminary experiments concerning rewriting at lexical and paragaph level. This is an ongoing project which currently addresses a restricted number of issues, including target text modelling and text rewriting at lexical level.
Performance evaluation of LSB and LSD in steganography

In this work we have implemented and discussed the performance evaluation of Least Significant Bit (LSB) and Least Significant Digit (LSD) on various formats of multimedia data. We have shown the performance variation on different formats for which these two techniques have been applied to hide the messages. Implementation of both the algorithms has been done to explore the security and distortion level in different formats. Based on the implementation and exhaustive testing of the methods on documents, it was found that they help in proper hiding of messages so that it is not recovered by the intruder during the transfer of data from sender to the receiver.
Temperature dependence of the joining by T4 DNA ligase of termini produced by type II restriction endonucleases

The temperature dependence of the T4 DNA ligase-catalyzed joining of plasmid DNA linearized by the action of HaeIII, EcoRI and PstI restriction endonucleases has been investigated by electron microscopy analysis. The extent of joining is maximal at 4 degrees and decreases with increasing temperatures following sigmoid-like curves. The temperature at which 50% of the maximal reaction is still observable increases going from DNA termini without single-stranded overlaps (produced by HaeIII) to termini with four nucleotides overlap, composed only by two A and two T (produced by EcoRI) to termini with four nucleotide overlap, composed by A, T, G and C (produced by PstI).
OBSCURED STAR FORMATION IN INTERMEDIATE-DENSITY ENVIRONMENTS: A SPITZER STUDY OF THE ABELL 901/902 SUPERCLUSTER

We explore the amount of obscured star formation as a function of environment in the Abell 901/902 (A901/902) supercluster at z = 0.165 in conjunction with a field sample drawn from the A901 and CDFS fields, imaged with the Hubble Space Telescope as part of the Space Telescope A901/902 Galaxy Evolution Survey and Galaxy Evolution from Morphology and Spectral Energy Distributions (SEDs) Survey. We combine the combo-17 near-UV/optical SED with Spitzer 24 μ photometry to estimate both the unobscured and obscured star formation in galaxies with M* > 1010 M☉. We find that the star formation activity in massive galaxies is suppressed in dense environments, in agreement with previous studies. Yet, nearly 40% of the star-forming (SF) galaxies have red optical colors at intermediate and high densities. These red systems are not starbursting; they have star formation rates (SFRs) per unit stellar mass similar to or lower than blue SF galaxies. More than half of the red SF galaxies have low infrared-to-ultraviolet (IR-to-UV) luminosity ratios, relatively high Sérsic indices, and they are equally abundant at all densities. They might be gradually quenching their star formation, possibly but not necessarily under the influence of gas-removing environmental processes. The other ≳40% of the red SF galaxies have high IR-to-UV luminosity ratios, indicative of high dust obscuration. They have relatively high specific SFRs and are more abundant at intermediate densities. Our results indicate that while there is an overall suppression in the SF galaxy fraction with density, the small amount of star formation surviving the cluster environment is to a large extent obscured, suggesting that environmental interactions trigger a phase of obscured star formation, before complete quenching.
Algebraic Bethe ansatz for the gl(1|2) generalized model: II. the three gradings

The algebraic Bethe ansatz can be performed rather abstractly for whole classes of models sharing the same R-matrix, the only prerequisite being the existence of an appropriate pseudo vacuum state. Here we perform the algebraic Bethe ansatz for all models with 9 × 9, rational, gl(1|2) invariant R-matrix and all three possibilities of choosing the grading. Our Bethe ansatz solution applies, for instance, to the supersymmetric t–J model, the supersymmetric U model and a number of interesting impurity models. It may be extended to obtain the quantum transfer matrix spectrum for this class of models. The properties of a specific model enter the Bethe ansatz solution (i.e. the expression for the transfer matrix eigenvalue and the Bethe ansatz equations) through the three pseudo vacuum eigenvalues of the diagonal elements of the monodromy matrix which in this context are called the parameters of the model.
Research on technology of free-space coherent optical modulation and detection

This paper discussed the principle of amplitude modulation and coherent detection, then designed freedom homodyne coherent receiver system, included optical schematic design and the receiver signal acquisition & processing. Through NI data acquisition card acquire signal and LabVIEW graphical program software accomplish signal processing. The detection and collection methods can be applied to the phase and polarization of the demodulation processing.
Linking Entities in #Microposts

Social media has emerged to be an important source of information. Entity linking in social media provides an effective way to extract useful information from microposts shared by the users. Entity linking in microposts is a difficult task as they lack sufficient context to disambiguate the entity mentions. In this paper, we do entity linking by first identifying entity mentions and then disambiguating the mentions based on three different features: (1) similarity between the mention and the corresponding Wikipedia entity pages; (2) similarity between the mention and the tweet text with the anchor text strings across multiple webpages, and (3) popularity of the entity on Twitter at the time of disambiguation. The system is tested on the manually annotated dataset provided by Named Entity Extraction and Linking (NEEL) Challenge 2014, and the obtained results are on par with the state-of-the-art methods.
Chicana/Latina Undergraduate Cultural Capital: Surviving and Thriving in Higher Education

ChicanalLatina Undergraduate Cultural Capital: Surviving and Thriving in Higher Education Maricela DeMirjyn Colorado State University This study addressed the retention of Chicana/Latina undergraduates . The problem explored was one; how these women perceive campus climate as members of a marginalized student population and two; which strategies are used to "survive the system. " As a qualitative study, this work was guided by a confluence of methods including grounded theory, phenomenology and Chicana epistemology using educational narratives as data. The analysis indicated that Chicanas/Latinas do maintain a sense of being "Other" throughout their college experiences and this self­ identity is perceived as a "survival strategy" while attending a mainstream campus . Further analysis also showed that Chicanas/Latinas begin their college careers with social! cultural capital and is used as a fluid source of support during their stay at the university . ChicanolMexican "Culture" as a Rational Instrument in the Human Sciences Alexandro Jose Gradilla California State University, Fullerton The use of "culture" as an analytical category by social scientists presents an opportunity to examine how professional discursive formations are used to make empirical assertions. The social fact of culture is neither uniform nor unitary . Traditionally, culture has been thought of as a product of disciplinary research, not necessarily a variable for empirical study. When culture is used as a tool or instrument of scientific methodology, it loses its fluid nature as a disciplinary discourse. In this essay, I examine the specific discussion of the epidemiologic health paradox that states that the Chicano/Mexican immigrant "culture" serves as a protective factor against many maladies that afflict other U . S . populations. Since the 1 970s, this discussion of culture as a protective factor provides an interesting exposition of the uses of culture by empirical scholars. Structuring Liminality: Theorizing the Creation and Maintenance of the Cuban Exile Identity Jaclyn Colona Florida International University
SmartRestaurant: mobile payments in context-aware environment

Mobility, context-awareness and payment combined provide a customer with a completely new setting of consuming services at any time and any place. We introduce SmartRestaurant service, which allows customers to use mobile devices for ordering and paying lunches from a nearby campus restaurant beforehand. Further, SmartRestaurant provides the restaurant with means of adjusting the sales with production capacity and prior knowledge of upcoming orders. We present a user evaluation of the system in form of a field trial in the real environment of use.
Exploiting Turn-Taking Temporal Evolution for Personality Trait Perception in Dyadic Conversations

In dyadic conversations, turn-taking is a dynamically evolving behavior strongly linked to paralinguistic communication. Turn-taking temporal evolution in a dyadic conversation is inevitable and can be incorporated into a modeling framework for characterizing and recognizing the personality traits (PTs) of two speakers. This study presents an approach to automatically predicting PTs in a dyadic conversation. First, a recurrent neural network (RNN) was used to model the relationship between Big Five Inventory 10 (BFI-10) items and linguistic features of spoken text in each turn of a speaker (speaker turn) to output a BFI-10 profile. The RNN applies a recurrent property to characterize the short-term temporal evolution of a dialog. Second, the coupled hidden Markov model (C-HMM) was employed to model the long-term turn-taking temporal evolution and cross-speaker contextual information for detecting the PTs of two individuals for the entire dialog represented by the BFI-10 profile sequence. The Mandarin Conversational Dialogue Corpus was used for evaluation. The evaluation result shows that an average perception accuracy of 79.66% for the big five traits was achieved using five-fold cross validation. Compared with conventional HMM and support vector machine-based methods, the proposed approach achieved a more favorable performance according to a statistical significance test. The encouraging results confirm the usability of this system for future applications.
A Measuring Method for Angular Displacement Based on Correlation Algorithm

The existing angular displacement measurement methods rely on the manufacturing precision of the fixed-plate and moving-plate with high manufacturing cost, and it is difficult to overcome a static error and drift for the static measurement method. A kind of angular displacement measuring method based on correlation algorithm is presented with the characteristics of a low manufacturing cost, high precision, anti-noise and anti-partially damaged properties and so on. The method is that firstly full circle broadband or white noise, random data is a pre-prepared coaxially in a rotating body, then the periodic random signal is continuously formed using pickup head reads this data in the basic uniform rotation process of the rotating body. The instantaneous angular displacement of the pickup head relative to the rotating body is obtained by means of the correlation operations between the periodic random signal and the signal sequence of pre-stored data. The angular displacement among the different pickup heads is gained by subtraction for the instantaneous angular displacement of different pickup heads relative to the rotating body at the same instant. The functional relationship between the relative angular displacement of the different pickup heads and the measured angular displacement is determined by linkage equations, which is used to calculate the measured angular displacement. Furthermore, the schematics of detective devices and the principle of the signal processing are developed to implement the method.
A High Conversion-Gain $Q$-Band InP DHBT Subharmonic Mixer Using LO Frequency Doubler

The paper presents analysis and design of a Q-band subharmonic mixer (SHM) with high conversion gain. The SHM consists of a local oscillator (LO) frequency doubler, RF pre-amplifier, and single-ended mixer. The SHM has been fabricated in a high-speed InP double heterojunction bipolar transistor (DHBT) technology using coplanar waveguide structures. To the best of our knowledge, this is the first demonstration of an SHM using InP DHBT technology at millimeter-wave frequencies. The measured results demonstrate a conversion gain of 10.3 dB at 45 GHz with an LO power of only 1 mW. The fundamental mixing product is suppressed by more than 24 dB and the output is around . The mixer is broadband with a conversion gain above 7 dB from 40 to 50 GHz. The conversion gain for the fabricated SHM is believed to be among the best ever reported for millimeter-wave SHMs.