Miracle-dz/UniFAR-FTUs huggingface dataset:
Principal component analysis by neural network. Application: remote sensing images compression and enhancement

The quality of remotely sensed images depends on the conditions in which the satellite works. These conditions are not favourable for acquiring image data that are net and directly exploitable. The spectral images provided by satellite are correlated, noisy, and require valuable memory space. To improve, de-correlate and compress the remotely sensed images, a PCA-based neural network model is proposed. Its architecture, learning algorithm, and convergence are the subjects of this paper. The obtained results, using real data provided by the Landsat-TM satellite, show that the model performs well the above mentioned tasks.
Collaboration and Creativity: The Small World Problem1

Small world networks have received disproportionate notice in diverse fields because of their suspected effect on system dynamics. The authors analyzed the small world network of the creative artists who made Broadway musicals from 1945 to 1989. Using original arguments, new statistical methods, and tests of construct validity, they found that the varying “small world” properties of the systemic‐level network of these artists affected their creativity in terms of the financial and artistic performance of the musicals they produced. The small world network effect was parabolic; performance increased up to a threshold, after which point the positive effects reversed.
Presentations and other scholarship 1-1-2015 Inference from Structred and Unstructured Electronic Medical Data for Early Dementia Detection

The prevalence of Alzheimer’s disease (AD) and other forms of dementia is increasing with the aging population, both in the United States and around the globe. The inability to cure these conditions results in prolonged and expensive medical care. Early detection is critical to potentially postpone symptoms and to prepare both healthcare providers and families for subjects’ future needs. Current detection methods are typically costly or unreliable, and much stands to benefit from improved recognition of early AD markers. Electronic patient records provide the potential for computational analysis and prediction of complex diseases like AD. Whereas prior work on this problem has focused on structured data (e.g. test results) alone, this study integrates structured and unstructured (e.g. clinical notes) from the Alzheimer’s Disease Neuroimaging Initiative (ADNI)* for classification of subjects’ dementia status. Prediction based on unstructured data alone performs with similar accuracy compared to structured data, and integration of the two provides performance improvements over either in isolation. In addition, we provide insights into which structured features were more useful for classification of AD, supporting previously observed trends, while also highlighting the potential for computational methods to discover new early markers.
Magnesium loss in magnesium deficient subjects with and without physical exercise during prolonged hypokinesia.

OBJECTIVE To show the effect of hypokinesia (HK; diminished movement) on magnesium (Mg2+) loss in Mg2+ deficient subjects and the effect of physical exercise and on Mg2+ deficiency with and without physical exercise: Mg2+ balance, serum Mg2+ concentration and Mg2+ loss were measured. METHODS Studies were conducted on 30 healthy male volunteers during a pre-experimental period of 30 days and an experimental period of 364 days. They were divided equally into three-groups: unrestricted active control subjects (UACS), continuous hypokinetic subjects (CHKS) and periodic hypokinetic subjects (PHKS). The UACS group ran average distances of 9.3 +/- 1.2 km.day-l; the CHKS group walked average distances of 0.9 +/- 0.2 km.day-l; and the PHKS group walked and ran average distances of 0.9 +/- 0.2 km and 9.3 +/- 1.2 km.day-l for 5-and 2-days per week, respectively. RESULTS Mg2+ deficiency, serum Mg2+ level, fecal and urine Mg2+ loss increased (P < 0.05), in the PHKS and CHKS groups compared with their pre-experimental values and the values in the UACS group. However, serum Mg2+ concentration, urine and fecal Mg2+ loss and Mg2+ deficiency increased more (P < 0.05) in the PHKS group than in the CHKS group. CONCLUSIONS Mg2+ deficiency is more evident with than without physical exercise and Mg2+ loss is exacerbated more with higher than lower Mg2+ deficiency. This indicates that Mg2+ deficiency with and without physical exercise and Mg2+ loss with higher and lower Mg2+ deficiency is due to inability of the body to use Mg2+ and more so when physically healthy subjects are submitted to prolonged periodic than continuous hypokinesia.
Sensitivity to Feature Displacement in Familiar and Unfamiliar Faces: Beyond the Internal/External Feature Distinction

Previous studies of face recognition and of face matching have shown a general improvement for the processing of internal features as a face becomes more familiar to the participant. In this study, we used a psychophysical two-alternative forced-choice paradigm to investigate thresholds for the detection of a displacement of the eyes, nose, mouth, or ears for familiar and unfamiliar faces. No clear division between internal and external features was observed. Rather, for familiar (compared to unfamiliar) faces participants were more sensitive to displacements of internal features such as the eyes or the nose; yet, for our third internal feature—the mouth—no such difference was observed. Despite large displacements, many subjects were unable to perform above chance when stimuli involved shifts in the position of the ears. These results are consistent with the proposal that familiarity effects may be mediated by the construction of a robust representation of a face, although the involvement of attention in the encoding of face stimuli cannot be ruled out. Furthermore, these effects are mediated by information from a spatial configuration of features, rather than by purely feature-based information.
Trauma, coping, and depression among women with HIV/AIDS in New York City

Among 230 HIV-positive women in New York City, we examined the association of retrospective self-reports of sexual and physical abuse, current coping strategies and depressive symptomatology (CES-D scores). Results revealed a high prevalence of abuse in childhood (50%) and adulthood (68%); 7% reported physical assault or rape in the last 90 days. As expected, childhood abuse was significantly correlated with both adult and recent trauma, and each type of trauma correlated with CES-D scores. Childhood abuse also positively correlated with the frequency of current adaptive and avoidant coping strategies, although avoidant coping had a stronger (negative) association with CES-D scores. Hierarchical regression analyses revealed the association between childhood abuse and CES-D scores persisted even after controlling for relevant demographic variables, more recent trauma and coping strategies. Implications for improving the psychological functioning of women living with HIV/AIDS are discussed.
Efficacy of Injections of Corticosteroids for Subacromial Impingement Syndrome*

A prospective, randomized, controlled, double-blind clinical study was performed to determine the short-term efficacy of subacromial injection of corticosteroids for the treatment of subacromial impingement syndrome. Forty patients were randomized to receive either six milliliters of 1 per cent lidocaine without epinephrine (the control group) or two milliliters containing forty milligrams of triamcinolone acetonide per milliliter with four milliliters of 1 per cent lidocaine without epinephrine (the corticosteroid group). The patients were re-examined serially until completion of the study. Nineteen patients, whose mean age was fifty-six years (range, thirty-two to eighty years), were randomized to the corticosteroid group, and twenty-one patients, whose mean age was fifty-seven years (range, thirty-two to eighty-one years), were randomized to the control group. The mean duration of symptoms before the injection was eight months for both groups. Eighteen patients in the corticosteroid group and nineteen patients in the control group had moderate or severe pain before the injection. At the most recent follow-up evaluation, at a mean of thirty-three weeks for the corticosteroid group and twenty-eight weeks for the control group, three patients in the corticosteroid group had moderate or severe pain, compared with fifteen patients in the control group. The mean active range of forward elevation and external rotation improved by 24 and 11 degrees, respectively, for the corticosteroid group and by 10 and 5 degrees, respectively, for the control group. We concluded that subacromial injection of corticosteroids is an effective short-term therapy for the treatment of symptomatic subacromial impingement syndrome. The use of such injections can substantially decrease pain and increase the range of motion of the shoulder.
Atomic layer structure of manganese atoms on wurtzite gallium nitride (0001

Submonolayer quantities of Mn are deposited on wurtzite GaN (0001¯). The surface is monitored using reflection high energy electron diffraction, which shows a pattern consisting of 3× reconstruction along [101¯0], but only 1× along [112¯0]. Diffraction analysis shows that the 3× streak intensity is maximized at ≈0.86 monolayer of Mn deposition. The results indicate that Mn forms linear chains along the [101¯0] direction with a spacing of 3a/2 along chains and 3a/2 between chains. Correcting the peak coverage for sticking coefficient and accounting for the observed periodicities, a 3×3-R30° model, consisting of 2/3 monolayer of Mn atoms, is proposed.
Wind Turbine Load Mitigation based on Multivariable Robust Control and Blade Root Sensors

This paper presents two H∞ multivariable robust controllers based on blade root sensors' information for individual pitch angle control. The wind turbine of 5 MW defined in the Upwind European project is the reference non-linear model used in this research work, which has been modelled in the GH Bladed 4.0 software package. The main objective of these controllers is load mitigation in different components of wind turbines during power production in the above rated control zone. The first proposed multi-input multi-output (MIMO) individual pitch H" controller mitigates the wind effect on the tower side-to-side acceleration and reduces the asymmetrical loads which appear in the rotor due to its misalignment. The second individual pitch H" multivariable controller mitigates the loads on the three blades reducing the wind effect on the bending flapwise and edgewise momentums in the blades. The designed H" controllers have been validated in GH Bladed and an exhaustive analysis has been carried out to calculate fatigue load reduction on wind turbine components, as well as to analyze load mitigation in some extreme cases.
Les théories de la prise en charge au prisme des particules modales de l'allemand

Apres un bref rappel des debats theoriques portant sur les rapports entre prise en charge, dialogisme et modalite, l'article confronte trois formes d'approches de ces problemes en discutant de leur valeur respective face a un probleme linguistique donne : la semantique des particules modales de l'allemand. La perspective adoptee est semantiquement minimaliste et repond a un objectif d'economie maximale, le semantisme de chaque forme devant etre ramene a une seule definition quel que soit le type illocutoire de l'enonce. On s'attache notamment a comparer la Theorie de l'Ajustement Intersubjectif (TAI, Abraham et Leiss 2012) aux approches pragmatiques neo-griceennes et a la theorie de la scene enonciative (Paillard 2009), d'inspiration culiolienne. On montre tout d'abord qu'une approche basee sur la TAI permet de proposer un semantisme modal epistemique unifie pour les particules a condition de faire intervenir la subjectivite sous la forme d'agents epistemiques plutot que de participants a l'acte de langage. Dans un deuxieme temps, cette analyse est confrontee a celle de Paillard et aux theories du savoir mutuel, fondees sur la mise en relation de propositions entre elles et sur des operations de reperage entre propositions alternatives. L'analyse se concentre sur la question des niveaux ontologiques mis en jeu par les differentes theories, entre contenus mentaux, attitudes epistemiques et intentions illocutoires. Pour ce faire, on etudie notamment l'opposition entre deux particules modales adversatives, schon et doch, et les emplois de doch comme connecteur. Au terme de la discussion, l'intervention d'un agent porteur de points de vue epistemiques parait indispensable a l'explication. L'etude se conclut par un plaidoyer pour une semantique enonciative fondee sur l'opposition de niveaux ontologiques, correspondant a des contraintes dans la selection semantique des arguments pris dans la portee des marqueurs.
Estudo comparativo dos modelos da onda cinemática e da onda difusiva na análise de propagação de cheias, em função dos parâmetros hidráulicos da bacia

Os Modelos da Onda Cinematica e da Onda Difusiva foram aplicados em um rio natural, para estudar a propagacao de uma onda de cheia neste corpo hidrico. Esses modelos sao derivacoes do Modelo da Onda Dinâmica, a partir de simplificacoes nas Equacoes de Saint Venant, onde alguns termos sao desprezados. No processo de solucao das equacoes diferenciais, pertinentes aos modelos, foi usado o Metodo das Diferencas Finitas, sendo que o esquema de aproximacao explicita foi aplicado para a onda cinematica, enquanto que o esquema de aproximacao implicita foi aplicado para a onda difusiva. Para esta pesquisa, um programa computacional, em linguagem FORTRAN, foi desenvolvido e permitiu que viarias simulacoes fossem realizadas, para diferentes cenarios encontrados nos rios naturais. Estudos para verificar a sensibilidade dos modelos, com respeito aos parâmetros hidraulicos da bacia, foram realizados. Tambem foi verificada a influencia da linearizacao das equacoes diferenciais, que compoem os modelos, nos calculos das variaveis de controle. Os resultados mostraram que o modelo da onda cinematica e mais sensivel ao coeficiente de rugosidade das paredes do canal, enquanto que o modelo da onda difusiva e mais sensivel para parâmetros da declividade de fundo do canal, onde este parâmetro atua diretamente no processo de amortecimento da onda em propagacao. Os resultados mostraram ainda que, para os cenarios usados nas simulacoes, o processo de linearizacao das equacoes diferenciais nao afeta, consideravelmente, a solucao dos modelos.
Influence of colour type and previous cultivation on secondary metabolites in hypocotyls and leaves of maca (Lepidium meyenii Walpers).

BACKGROUND Maca is an Andean crop of the Brassicaceae family which is mainly known for its fertility-enhancing properties following consumption. The hypocotyls display various colours ranging from white to black. Each colour has different biological effects. The aim of this study was to analyse the concentrations of major secondary metabolites in hypocotyls and leaves of maca in a controlled planting experiment in the Peruvian Andes at 4130 m above sea level. The effects of colour type and of previous cultivation of the field were examined. RESULTS In the hypocotyls, the colour type effect was significant for most secondary metabolites; exceptions were beta-sitosterol and campesterol. The lead-coloured, yellow and violet maca hypocotyls were rich in glucosinolates, macaene and macamides, respectively. Previous cultivation affected macaene, campesterol and indole glucosinolate concentrations. Effects on metabolite concentrations in the leaves were minor. Hypocotyls were richer in macaene, macamides and glucosinolates than were leaves, and were poorer in beta-sitosterol and total phenols. CONCLUSION Colour type has to be considered in maca production, as colour associates with variations in concentrations of distinct bioactive metabolites. Leaves may be interesting for animal nutrition purposes as they contain essentially the same secondary metabolites as the hypocotyls but in clearly lower concentrations.
Effects of source influence and peer referrals on information diffusion in Twitter

Purpose Social media have attracted attention as an information channel for content generated in heterogeneous internet services. Focusing on social media platforms, the purpose of this paper is to examine the factors behind social transmission with content crossover from other services through hypertext link (URL). The authors investigate the effects of source influence and peer referrals on diffusion outcome and address their variations in the case of content crossover. Design/methodology/approach The authors use a Poisson regression model due to the discrete nature of the dependent variable. The authors conduct an empirical study using 233 million real transaction data generated by 1,203,196 Korean users of Twitter. Findings Source influence and peer referral have a positive impact on cascade size in the content dissemination process. In the case of content crossover, the impact of source influence decreases. However, the impact of peer referrals increases in the process of external content dissemination. Research limitations/implications The authors demonstrate source and peer effects on content diffusion and that these effects vary when shared content is linked from an external service by a URL. Practical implications The findings indicate that firms that wish to diffuse information through social media or enter the social media with new services to provide new ways of creating and sharing content should understand the nature of the social transmission process. Originality/value Given the growing popularity of social media, particularly SNSs with online social networks as information channels, the authors first consider online social transmission as a user-driven diffusion process. Based on social factors in the diffusion process, the authors derive source and peer effects on the social transmission process.
Microbial causation of the chronic idiopathic inflammatory bowel diseases.

SUMMARY : The inability to find microbial causes for the idiopathic inflammatory bowel diseases has caused investigators and physicians to conclude that these IBDs are not infectious diseases. However, given the complexity of the intestinal flora and fauna and our very limited understanding of its microbiology, it is quite possible that one or more etiologic agents for the IBDs exist, but have not been detected. Consideration of a number of models for how persistent microbes could cause disease, as well as an analysis of the specific relationship of Helicobacter pylori to human disease, facilitates new paradigms for analysis of the IBDs. If the IBDs are due to microbial agents, then the numerous immunological abnormalities observed are thus secondary phenomena. The development of a more comprehensive knowledge base of the microbiology of the human intestine in general, and of IBD patients in particular, is most needed for advances to be made toward cure.
From Fieldwork to Annotated Corpora: The CorpAfroAs project

L'objectif de cet article est de presenter a mi-parcours un projet de corpus oral dont le but est de proposer une annotation pilote et une architecture generale, dans un echantillon de langues afroasiatiques. L'accent est mis sur les developpements theoriques et techniques du projet. Les principaux points abordes sont: les motivations des choix technologiques operes, en particulier les solutions logicielles ; l'organisation des niveaux d'annotation en relation avec les recherches automatiques pertinentes pour notre phylum linguistique ; ainsi que la structure de notre fiche de metadonnees. L'objectif ultime de CorpAfroAs est de favoriser le montage de projets similaires pour d'autres familles de langues. C'est pourquoi l'architecture du corpus, et les decisions scientifiques que nous avons prises, doivent etre portees a la connaissance de la communaute, et soumises a discussion et implementation.
Outsourcing versus In-house Production: The Case of Product Differentiation with Cost Uncertainty

The paper examines the relationship between the choice of outsourcing versus in-house production and product differentiation. We analyze the situation where a manufacturer decides between in-house production and outsourcing when faced with cost uncertainty and competition with a rival manufacturer in a differentiated goods market. We show that the degree of product differentiation does not affect the choice between in-house production and outsourcing. The result suggests that regardless of the intensity of competition, the manufacturer should decide on outsourcing if the degree of the cost efficiency of outsourcing exceeds certain thresholds.
Effect of process parameters and product‐host‐interaction on hVEGFA‐production by recombinant Chinese hamster ovary cells

A potential producer clone was identified among recombinant, human vascular endothelial growth factor A (hVEGFA)‐producing Chinese Hamster Ovary (CHO) K1 cells, using a recently established screening method. In batch spinner cultivations, the cells showed a maximum growth rate of 0.045 h−1, a final total cell density of 5.3 × 106 mL−1 (living cell density: 3.4 × 106 mL−1), and a final hVEGFA concentration of 207 μg L−1. Living cell density and productivity in the spinner cultivations could be increased by glutamine feeding. Transfer of the process to the bioreactor (batch mode, control of pH, T, and O2) resulted in a reduction of the growth rate by roughly 50%, while overall living cell density and productivity increased, largely due to an extension of the production phase. When the bioreactor was run in the fed‐batch mode, growth rates were further reduced, while productivity and living cell densities reached a maximum (hVEGFA: 358 μg L−1, cells: 5.2 × 106 mL−1). In addition, the death rate of the hVEGFA‐producing cells was considerably reduced compared with the parent cell line, most likely due to product‐host‐interaction. This hypothesis was corroborated when a second recombinant CHO cell line (antibody producer) was transfected with the hVEGFA gene and afterward consistently showed higher viable cell densities together with a significantly improved antibody titer. © 2012 American Institute of Chemical Engineers Biotechnol. Prog. , 2012