Miracle-dz/UniFAR-FTUs huggingface dataset:
Dynamic channel, rate selection and scheduling for white spaces

We investigate dynamic channel, rate selection and scheduling for wireless systems which exploit the large number of channels available in the White-space spectrum. We first present measurements of radio channel characteristics from an indoor testbed operating in the 500 to 600MHz band and comprising 11 channels. We observe significant and unpredictable (non-stationary) variations in the quality of these channels, and demonstrate the potential benefit in throughput from tracking the best channel and also from optimally adapting the transmission rate. We propose adaptive learning schemes able to efficiently track the best channel and rate for transmission, even in scenarios with non-stationary channel condition variations. We also describe a joint scheduling scheme for providing fairness in an Access Point scenario. Finally, we implement the proposed adaptive scheme in our testbed, and demonstrate that it achieves significant throughput improvement (typically from 40% to 100%) compared to traditional fixed channel selection schemes.
Experiences using Augmented Reality Environment for training and evaluating medical students

The process of medical training and evaluation in Brazil has been supported by several resources in order to graduate more qualified students. These resources include atlas, photos, movies, cadavers, animations, real patients, standarized patients(actors) and anatomical manikins, among others. For the reality of medical schools in a developing country as Brazil, high-end manikins are too expensive. This paper describes the validation of the Augmented Reality Environment for Life Support Training (ARLIST) system, built on the top of conventional manikins, used in cloth shops, during three editions of the Selection Exam for the Medical Residence Program of São Lucas Hospital, reaching a total of 450 users of this system. The use of manikins in these exams has showed that there is great potential for using this kind of technology in this process in medical schools, since the results were promising and resources as cadavers and experimental animals are increasingly scarce.
Activity-Based Anorexia Reduces Body Weight without Inducing a Separate Food Intake Microstructure or Activity Phenotype in Female Rats—Mediation via an Activation of Distinct Brain Nuclei

Anorexia nervosa (AN) is accompanied by severe somatic and psychosocial complications. However, the underlying pathogenesis is poorly understood, treatment is challenging and often hampered by high relapse. Therefore, more basic research is needed to better understand the disease. Since hyperactivity often plays a role in AN, we characterized an animal model to mimic AN using restricted feeding and hyperactivity. Female Sprague-Dawley rats were divided into four groups: no activity/ad libitum feeding (ad libitum, AL, n = 9), activity/ad libitum feeding (activity, AC, n = 9), no activity/restricted feeding (RF, n = 12) and activity/restricted feeding (activity-based anorexia, ABA, n = 11). During the first week all rats were fed ad libitum, ABA and AC had access to a running wheel for 24 h/day. From week two ABA and RF only had access to food from 9:00 to 10:30 a.m. Body weight was assessed daily, activity and food intake monitored electronically, brain activation assessed using Fos immunohistochemistry at the end of the experiment. While during the first week no body weight differences were observed (p > 0.05), after food restriction RF rats showed a body weight decrease: −13% vs. day eight (p < 0.001) and vs. AC (−22%, p < 0.001) and AL (−26%, p < 0.001) that gained body weight (+10% and +13%, respectively; p < 0.001). ABA showed an additional body weight loss (−9%) compared to RF (p < 0.001) reaching a body weight loss of −22% during the 2-week restricted feeding period (p < 0.001). Food intake was greatly reduced in RF (−38%) and ABA (−41%) compared to AL (p < 0.001). Interestingly, no difference in 1.5-h food intake microstructure was observed between RF and ABA (p > 0.05). Similarly, the daily physical activity was not different between AC and ABA (p > 0.05). The investigation of Fos expression in the brain showed neuronal activation in several brain nuclei such as the supraoptic nucleus, arcuate nucleus, locus coeruleus and nucleus of the solitary tract of ABA compared to AL rats. In conclusion, ABA combining physical activity and restricted feeding likely represents a suited animal model for AN to study pathophysiological alterations and pharmacological treatment options. Nonetheless, cautious interpretation of the data is necessary since rats do not voluntarily reduce their body weight as observed in human AN.
PAST PERFORMANCE AND FUTURE PERSPECTIVES OF BURNOUT RESEARCH

After a brief introduction on the history of burnout, this article reviews the past performance of burnout research by answering ten key-questions: (1) How can burnout be assessed? ; (2) Is burnout limited to the human services? ; (3) Is burnout a mental disorder; (4) What is the prevalence of burnout? ; (5) Is burnout a global phenomenon? ; (6) Is burnout relevant for organisations; (7) What are the causes of burnout? ; (8) What are the consequences of burnout? ; (9) How can burnout be explained? ; (10) Are burnout interventions effective? In the concluding section a future research agenda is drafted on the bases of the answers given to the previous questions. This agenda includes such issues as the measurement and conceptualisation of burnout, mild and severe forms of burnout, epidemiological and cross-cultural perspectives, organisational outcomes, longitudinal investigations, theoretical explanations, and interventions. Opsomming Na ’n kort inleiding oor die geskiedenis van uitbranding gee hierdie artikel ’n oorsig van vorige prestasie van navorsing ten opsigte van uitbranding deur tien sleutelvrae te beantwoord: (1) Hoe kan uitbranding bepaal word? ; (2) Is uitbranding beperk tot die mens-dienste? ; (3) Is uitbranding ’n geestesafwyking? ; (4) Wat is die voorkoms van uitbranding? ; (5) Is uitbranding ’n wereldwye verskynsel? ; (6) Is uitbranding relevant vir organisasies? ; (7) Wat is die oorsake van uitbranding? ; (8) Wat is die gevolge van uitbranding? ; (9) Hoe kan uitbranding verklaar word? ; (10) Is uitbrandingsingrepe effektief? In die gevolgtrekking word ’n toekomstige navorsingsagenda op grond van die antwoorde op die voorafgaande vrae opgestel. Hierdie agenda sluit aangeleenthede soos die meting en konseptualisering van uitbranding, matige en ernstige vorme van uitbranding, epidemiologiese en kruiskulturele perspektiewe, organisasie- uitkomste, longitudinale ondersoeke, teoretiese verklarings en intervensies in.
Combining experts for improved face verification performance *

Samodejno razpoznavanje (avtentikacija/identifikacija) obrazov predstavlja eno najaktivnejših raziskovalnih področij biometrije. Avtentikacija oz. identifikacija oseb z razpoznavanjem obrazov ponuja možen način povečanja varnosti pri različnih dejavnostih, (npr. pri elektronskem poslovanju na medmrežju, pri bančnih storitvah ali pri vstopu v določene prostore, stavbe in države). Ponuja univerzalen in nevsiljiv način razpoznavanja oseb, ki pa trenutno še ni dovolj zanesljiv. Kot možna rešitev problema zanesljivosti razpoznavanja se v literaturi vse pogosteje pojavljajo večmodalni pristopi, v katerih se razpoznavanje izvede na podlagi večjega števila postopkov razpoznavanja obrazov. V skladu z opisanim trendom, bomo v članku ovrednotili zanesljivost delovanja različnih postopkov razpoznavanja obrazov, ki jih bomo na koncu združili še v večmodalni pristop. S pomočjo eksperimentov na podatkovni zbirki XM2VTS bomo preverili zanesljivost delovanja večmodalnega pristopa in jo primerjali z zanesljivostjo uveljavljenih postopkov razpoznavanja.
CLASS 0 PROTOSTARS IN THE PERSEUS MOLECULAR CLOUD: A CORRELATION BETWEEN THE YOUNGEST PROTOSTARS AND THE DENSE GAS DISTRIBUTION

We use PACS and SPIRE continuum data at 160 μm, 250 μm, 350 μm, and 500 μm from the Herschel Gould Belt Survey to sample seven clumps in Perseus: B1, B1-E, B5, IC 348, L1448, L1455, and NGC 1333. Additionally, we identify and characterize the embedded Class 0 protostars using detections of compact Herschel sources at 70 μm as well as archival Spitzer catalogs and SCUBA 850 μm photometric data. We identify 28 candidate Class 0 protostars, four of which are newly discovered sources not identified with Spitzer. We find that the star formation efficiency of clumps, as traced by Class 0 protostars, correlates strongly with the flatness of their respective column density distributions at high values. This correlation suggests that the fraction of high column density material in a clump reflects only its youngest protostellar population rather than its entire source population. We propose that feedback from either the formation or evolution of protostars changes the local density structure of clumps.
Should We Go Our Own Way? Backsourcing Flexibility in IT Services Contracts

The emergence of new service science approaches to business problems in information technology (IT) services offers new, unusually relevant insights for the senior management of vendors in this business area. This research examines how service-level agreement contract flexibility should be designed when the technological and business market environments result in volatility of demand, based on an understanding of related changes in the cost drivers that underlie IT services contracts. Our approach draws on a blend of well-known methods from financial economics—the real option pricing method and the contingent claims analysis method. In particular, our research examines a setting in which a vendor provides IT services to a client according to a prenegotiated IT services contract in the presence of demand volatility. We analyze the motivation of and value consequences for a vendor that offers the client the flexibility to opt out of the contract. For example, the client might switch to another vendor, or backsource and provide its own services internally. Our core results offer important foundational thinking for how to specify various forms of IT service-related flexibility in terms of put and call options from the point of view of an IT services vendor, so that their value and exercise timing can be estimated. We show that the client firm's demand trigger value for deciding when to backsource its IT services varies, and it depends on the degree of demand volatility as well as the usage-based fees charged by the vendor. Working from our modeling approach, we also are able to characterize the extent to which a vendor can benefit from bearing the costs of making a backsourcing flexibility option available to its client.
Correction for Kaufman, A model of human phenylalanine metabolism in normal subjects and in phenylketonuric patients

The derivation of a quantitative model of phenylalanine metabolism in humans is described. The model is based on the kinetic properties of pure recombinant human phenylalanine hydroxylase and on estimates of the in vivo rates of phenylalanine transamination and protein degradation. Calculated values for the steady-state concentration of blood phenylalanine, rate of clearance of phenylalanine from the blood after an oral load of the amino acid, and dietary tolerance of phenylalanine all agree well with data from normal as well as from phenylketonuric patients and obligate heterozygotes. These calculated values may help in the decision about the degree of restriction of phenylalanine intake that is necessary to achieve a satisfactory clinical outcome in classical patients and in those with milder forms of the disease.
Simultaneous Local Binary Feature Learning and Encoding for Face Recognition

In this paper, we propose a simultaneous local binary feature learning and encoding (SLBFLE) method for face recognition. Different from existing hand-crafted face descriptors such as local binary pattern (LBP) and Gabor features which require strong prior knowledge, our SLBFLE is an unsupervised feature learning approach which is automatically learned from raw pixels. Unlike existing binary face descriptors such as the LBP and discriminant face descriptor (DFD) which use a two-stage feature extraction approach, our SLBFLE jointly learns binary codes for local face patches and the codebook for feature encoding so that discriminative information from raw pixels can be simultaneously learned with a one-stage procedure. Experimental results on four widely used face datasets including LFW, YouTube Face (YTF), FERET and PaSC clearly demonstrate the effectiveness of the proposed method.
Electronic Reprint Biological Crystallography Rapid Automatic Ncs Identification Using Heavy-atom Substructures Biological Crystallography Rapid Automatic Ncs Identification Using Heavy-atom Substructures

Author(s) of this paper may load this reprint on their own web site provided that this cover page is retained. Republication of this article or its storage in electronic databases or the like is not permitted without prior permission in writing from the IUCr. An important component of a fully automated system for structure solution and phase improvement through density modi®cation is a capability for identi®cation of non-crystallographic symmetry as early in the process as possible. Algorithms exist for ®nding NCS in heavy-atom sites, but currently require of the order of N 5 comparisons to be made, where N is the number of sites to be examined, including crystallographically related locations. A method described here based on considering only sets of sites that have common interatomic distances reduces the computational time by several orders of magnitude. Additionally, searches for proper symmetry allow the identi®cation of NCS in cases where only one heavy atom is present per NCS copy.
Resolution lower bounds for the weak pigeon hole principle

We prove that any resolution proof for the weak pigeonhole principle, with n holes and any number of pigeons, is of length /spl Omega/(2/sup n/spl isin//), (for some constant /spl isin/ > 0). One corollary is that a certain propositional formulation of the statement NP /spl nsub/ P/poly does not have short resolution proofs.
The relation of formal education to ethnic prejudice: Its reliability, validity and explanation

This paper examines three issues concerning the frequently documented negative correlation between formal education and ethnic prejudice, namely its reliability, its validity and the manner in which it is mediated. Reliability is demonstrated across three indices of ethnic attitudes in seven representative samples drawn from four European countries (West Germany, Netherlands, France, Great Britain; total N=3788). The hypothesis that this correlation reflects only the tendency of more highly educated respondents to give more socially desirable answers and not true attitude differences was inconsistent with the finding from the survey data that educational level also correlated negatively with responses to an index of subtle prejudice. Results from an experiment employing the bogus pipeline procedure similarly refute this hypothesis, indicating that significant education-related differences in expressed prejudice remain under conditions in which the tendency to give socially desirable responses is reduced. Finally, path analysis based on the survey data show that part but not all of the association between low education and ethnic prejudice is mediated by social psychological variables, particularly group relative deprivation, perceived belief incongruency, political conservatism, and acceptance of inter-ethnic contact.
Other than obedient: Girls' constructions of doctors and treatment regimes for anorexia nervosa

This paper examines how teenage girls diagnosed with and being treated for anorexia nervosa in hospital construct their anorexia, their identity as patients, medical authority and their doctors. In-depth interviews were conducted with 25 adolescent girls in two large, metropolitan hospitals in Australia. Using a discourse analytic approach informed by poststructural theory, we elucidate how girls perform as patients, contest the authoritative position of doctors and deploy popular, taken-for-granted discourses of femininity to resist treatment regimes and the construction of themselves by others as ‘anorexic’ and ‘sick’. Our analysis indicates that medical discourses in the hospital do not necessarily define or delimit girls' constructions of themselves, of anorexia, treatment or their relationships with doctors. The paper argues that understanding and validating girls' perspectives is essential in building and maintaining a therapeutic alliance in hospitals. We conclude by discussing how insights from poststructural analysis can assist in improving hospital practice. Copyright © 2009 John Wiley & Sons, Ltd.
Relation of a test of attention to road accidents.

Related a test of auditory selective attention, previously validated against criteria of flight proficiency, to the accident rate of 39 professional bus drivers. The test required the listener to monitor a relevant message and ignore a concurrent message presented to the other ear. A change in selective orientation was accompanied by a transient disruption of attention. Raven's Progressive Matrices was also administered, but results were not significantly correlated with the attention test. A measure of proneness to this type of disruption was significantly related to accident rate. (PsycINFO Database Record (c) 2012 APA, all rights reserved) Language: en
La violencia obstétrica: propuesta conceptual a partir de la experiencia costarricense

Este articulo contiene algunos resultados preliminares de un proyecto de investigacion cuyo objetivo es teorizar acerca de la violencia obstetrica a partir del caso de Costa Rica. Para ello, propone un concepto teorico novedoso: el poder obstetrico. A partir de dicho estudio, este trabajo retoma fuentes teoricas relevantes y evidencia empirica relacionadas con el tema. Se considera que, entre las teorias disponibles, la desarrollada por Michel Foucault es referencia clave para el analisis del problema. De ahi que sea posible identificar una particular forma de poder disciplinario ligada a la estructura patriarcal que construye el genero, donde la violencia obstetrica emerge como mecanismo de control y como generador de subjetividades especificas.
Robust frequency stabilization in a microgrid system

This paper proposes a new design of a robust control and monitoring system (RCMS) for robust stabilization of frequency fluctuation in a microgrid (MG) system. In MG system, the power sources consists of wind power (WP), photovoltaic (PV), microturbine (MT) and fuel cell (FC). Due to WP, PV and load fluctuations, the frequency stabilization of RCMS is performed by adjusting the power outputs of MT and electrolyzer system (ES) in both islanding and interconnected utility grid operations. The structure of MT and ES controllers is a proportional integral (PI). To enhance the robustness of designed controllers against system uncertainties, controller parameters of MT and ES are concurrently tuned by the particle swarm optimization based on a specified-structure H„ loop shaping control. Simulation results display the effectiveness and robustness of the proposed RCMS against system parameters variation and several operating conditions.
Mathematical Models for Local Nontexture Inpaintings

Dedicated to Stanley Osher on the occasion of his 60th birthday. Abstract. Inspired by the recent work of Bertalmio et al. on digital inpaintings (SIGGRAPH 2000), we develop general mathematical models for local inpaintings of nontexture images. On smooth regions, inpaintings are connected to the harmonic and biharmonic extensions, and inpainting orders are analyzed. For inpaintings involving the recovery of edges, we study a variational model that is closely connected to the classical total variation (TV) denoising model of Rudin, Osher, and Fatemi (Phys. D, 60 (1992), pp. 259-268). Other models are also discussed based on the Mumford-Shah regularity (Comm. Pure Appl. Math., XLII (1989), pp. 577-685) and curvature driven diffusions (CDD) of Chan and Shen (J. Visual Comm. Image Rep., 12 (2001)). The broad applications of the inpainting models are demonstrated through restoring scratched old photos, disocclusion in vision analysis, text removal, digital zooming, and edge-based image coding.
A transmission line model for the capacitively loaded inverted-F antenna (CLIFA)

Capacitive loading by means of a printed parallel plate element on the edge of an IFA has been used for size reduction. A transmission line model is used herein to provide close form solution for this antenna. The T-line model is based on the asymmetric coplanar waveguide and the capacitive loading is estimated using the parallel plate capacitor equations. The unloaded case is compared to three cases of different capacitive loads which result in different sizes for the radiation element. Circuit model results are compared against simulated and measured data for the reflection coefficient with impedance information obtained from the T-line model. Measured radiation pattern plots are shown for all four cases.
Genotype CC of rs 1800947 in the C-Reactive Protein Gene May Increase Susceptibility to Colorectal Cancer : a Meta-Analysis

Cancer has developed to be one of the most common and severe diseases that leads to high mortality worldwide in recent decades. According to 2012 American cancer report, in 2012, approximately 1.6 million persons were diagnosed as new cancer patients and 0.58 million patients were dead from cancer (Siegel et al., 2013). However, carcinogenesis is a complex process of multiple steps. Lots of factors are involved in carcinogenesis, and inflammation is an important factor that has been implicated in tumor initiation, promotion, progression, invasion and metastasis (Disis, 2010; Song et al., 2014; Li et al., 2014), and inflammation response could promote tumor progression by damaging DNA, stimulating angiogenesis, enhancing of cell proliferation and inhibiting apoptosis (Degenhardt et al., 2006; Bunt et al., 2007). C-reactive protein (CRP), an acute phase reaction protein, is a nonspecific serologic indicator of inflammation that is dramatically elevated and predominantly produced by hepatocytes in process of responding to inflammation. Its transcription and expression can be positively regulated by IL-6 or IL-1 in response to advanced cancer or chronic inflammatory conditions (Gabay and Kushner, 1999). Over expression of IL-6 increases concentration of CRP. High circulating CRP correlates with T cell impairment and increased levels of serum angiogenic factors and shows
A partial PIC with MRC receiver design for SCBT system over multipath fading channels

Single carrier block transmission (SCBT) system has become one of most popular modulation system due to its low peak to average power ratio (PAPR), and it is gradually considered to be used for uplink wireless communication system. And in this paper, for the uplink SCBT system, a low complexity parallel interference cancellation (PIC) with maximum ratio combining (MRC) technology is proposed to use for receiver to combat the inter-carrier interference (ICI) problem over multipath fading channel. With the aid of MRC scheme, the proposed PIC technique can effectively perform the interference cancellation and acquire the benefit of frequency diversity gain. In fact, with more taps for weighting combination, it will lead to higher frequency diversity gain. Furthermore, it indicates that the proposed technique can achieve better bit error rate (BER) performance due to the diversity gain. This can mainly be attributed to the ability of this scheme to effectively deal with interference effects and achieve inherent frequency diversity with MRC. Simulation results reveal that the proposed low complexity PIC-MRC system can provide robust performance and outperform the conventional PIC and the iterative frequency domain decision feedback equalizer (FD-DFE) systems over multipath fading channel environment.