Miracle-dz/UniFAR-FTUs huggingface dataset:
Pre-literacy skills of subgroups of children with speech sound disorders.

BACKGROUND The existing literature has conflicting findings about the literacy outcome of children with speech sound disorders (SSD), which may be due to the heterogeneity within SSD. Previous studies have documented that two important dimensions of heterogeneity are the presence of a comorbid language impairment (LI) and the persistence of SSD, but these factors have not been examined separately. METHOD The current study used a 2 x 2 MANOVA design (with follow-up MANCOVAs) to examine how a comorbid language impairment (LI) and the persistence of SSD relate to pre-literacy skills in a sample of 5- to 6-year-old children with SSD. RESULTS Significant main effects for persistent SSD and LI were obtained, such that each factor was associated with worse performance on pre-literacy tasks, particularly those assessing phonological awareness (even with nonverbal IQ covaried). In addition, even SSD children with normalized speech without LI were found to have deficits on phonological awareness tasks relative to control participants. CONCLUSIONS These results suggest that a history of SSD and comorbid LI are strong correlates of pre-literacy deficits.
The evolution of size in variable length representations

In many cases, a program's length increases during artificial evolution. This is known as "bloat", "fluff" or "increasing structural complexity". We show that bloat is not specific to genetic programming and suggest it is inherent in search techniques with discrete variable-length representations using simple static evaluation functions. We investigate the bloating characteristics of three non-population-based and one population-based search technique using a novel mutation operator. An artificial ant following the Santa Fe trail problem is solved by simulated annealing, hill climbing, strict hill climbing and population-based searching using two variants of the the new subtree-based mutation operator. As predicted, bloat is observed when using unbiased mutation and is absent in simulated annealing and in both hill climbers when using the length-neutral mutation; however, bloat occurs with both mutations when using a population. We conclude that there are two causes of bloat: (1) search operators with no length bias tend to sample bigger trees, and (2) competition within populations favours longer programs, as they can usually reproduce more accurately.
Some entities are more equal than others: statistical methods to consolidate Linked Data

Abstract. We propose a method for consolidating entities in RDF data on the Web. Our approach is based on a statistical analysis of the use of predicates and their associated values to identify “quasi”-key properties. Compared to a purely symbolic based approach, we obtain promising results, retrieving more identical entities with a high precision. We also argue that our technique scales well—possibly to the size of the current Web of Data—as opposed to more expensive existing approaches.
eLearning: A review of Internet‐based continuing medical education

Introduction: The objective was to review the effect of Internet‐based continuing medical education (CME) interventions on physician performance and health care outcomes. Methods: Data sources included searches of MEDLINE (1966 to January 2004), CINAHL (1982 to December 2003), ACP Journal Club (1991 to July/August 2003), and the Cochrane Database of Systematic Reviews (third quarter, 2003). Studies were included in the analyses if they were randomized controlled trials of Internet‐based education in which participants were practicing health care professionals or health professionals in training. CME interventions were categorized according to the nature of the intervention, sample size, and other information about educational content and format. Results: Sixteen studies met the eligibility criteria. Six studies generated positive changes in participant knowledge over traditional formats: only three studies showed a positive change in practice. The remainder of the studies showed no difference in knowledge levels between Internet‐based interventions and traditional formats for CME. Discussion: The results demonstrate that Internet‐based CME programs are just as effective in imparting knowledge as traditional formats of CME. Little is known as to whether these positive changes in knowledge are translated into changes in pratice. Subjective reports of change in physician behavior should be confirmed through chart review or other objective measures. Additional studies need to be performed to assess how long these new learned behaviors could be sustained. eLearning will continue to evolve as new innovations and more interactive modes are incorporated into learning.
An Evaluation of Generic Bulk Loading Techniques

Bulk loading refers to the process of creating an index from scratch for a given data set. This problem is well understood for B-trees, but so far, non-traditional index structures received modest attention. We are particularly interested in fast generic bulk loading techniques whose implementations only employ a small interface that is satisfied by a broad class of index structures. Generic techniques are very attractive to extensible database systems since different user-implemented index structures implementing that small interface can be bulk-loaded without any modification of the generic code. The main contribution of the paper is the proposal of two new generic and conceptually simple bulk loading algorithms. These algorithms recursively partition the input by using a main-memory index of the same type as the target index to be build. In contrast to previous generic bulk loading algorithms, the implementation of our new algorithms turns out to be much easier. Another advantage is that our new algorithms possess fewer parameters whose settings have to be taken into consideration. An experimental performance comparison is presented where different bulk loading algorithms are investigated in a system-like scenario. Our experiments are unique in the sense that we examine the same code for different index structures (R-tree and Slim-tree). The results consistently indicate that our new algorithms outperform asymptotically worst-case optimal competitors. Moreover, the search quality of the target index will be better when our new bulk loading algorithms are used.
Overcoming Motor “Forgetting” Through Reinforcement Of Learned Actions

The human motor system rapidly adapts to systematic perturbations but the adapted behavior seems to be forgotten equally rapidly. The reason for this forgetting is unclear, as is how to overcome it to promote long-term learning. Here we show that adapted behavior can be stabilized by a period of binary feedback about success and failure in the absence of vector error feedback. We examined the time course of decay after adaptation to a visuomotor rotation through a visual error-clamp condition—trials in which subjects received false visual feedback showing perfect directional performance, regardless of the movements they actually made. Exposure to this error-clamp following initial visuomotor adaptation led to a rapid reversion to baseline behavior. In contrast, exposure to binary feedback after initial adaptation turned the adapted state into a new baseline, to which subjects reverted after transient exposure to another visuomotor rotation. When both binary feedback and vector error were present, some subjects exhibited rapid decay to the original baseline, while others persisted in the new baseline. We propose that learning can be decomposed into two components—a fast-learning, fast-forgetting adaptation process that is sensitive to vector errors and insensitive to task success, and a second process driven by success that learns more slowly but is less susceptible to forgetting. These two learning systems may be recruited to different degrees across individuals. Understanding this competitive balance and exploiting the long-term retention properties of learning through reinforcement is likely to be essential for successful neuro-rehabilitation.
Towards Using Eshelby Calculations to Enhance Kinetic Model for Zirconium Hydride Precipitation

A c++ library (called Eshelby) was implemented in fiscal year 2015 based upon the formulas documented in this report. The library implements a generalized version of Eshelby’s [1] inclusion problem. The library was written as a set of functions which can be called from another program; the principle intended use cases are kinetic models of precipitate formation in zirconium claddings where use of the Eshelby library provides needed elastic energy density calculations, as well as calculations of stress and strain in and around precipitates; it is intended that the library will be made open source. For isotropic inclusions in the form of oblate and prolate ellipsoids, the Eshelby library can be used for nearly any relevant/appropriate shape parameters to calculate strains, stresses and energy density at interior and exterior points. The Eshelby library uses a combination of analytical formulas and numerical routines making it very extensible. For example, the library can can easily be extended to include inclusions such as spheres since analytical expressions exist for the required elliptic integrals; similarly, general ellipsoids do not have analytical results for the required elliptic integrals but those integrals can be numerically evaluated and thus fit naturally into the Eshelby library. This report documents all formulas implemented in the Eshelby library and presents some demonstration calculations relevant to the intended application.
Land management: data availability and process understanding for global change studies

In the light of daunting global sustainability challenges such as climate change, biodiversity loss and food security, improving our understanding of the complex dynamics of the Earth system is crucial. However, large knowledge gaps related to the effects of land management persist, in particular those human‐induced changes in terrestrial ecosystems that do not result in land‐cover conversions. Here, we review the current state of knowledge of ten common land management activities for their biogeochemical and biophysical impacts, the level of process understanding and data availability. Our review shows that ca. one‐tenth of the ice‐free land surface is under intense human management, half under medium and one‐fifth under extensive management. Based on our review, we cluster these ten management activities into three groups: (i) management activities for which data sets are available, and for which a good knowledge base exists (cropland harvest and irrigation); (ii) management activities for which sufficient knowledge on biogeochemical and biophysical effects exists but robust global data sets are lacking (forest harvest, tree species selection, grazing and mowing harvest, N fertilization); and (iii) land management practices with severe data gaps concomitant with an unsatisfactory level of process understanding (crop species selection, artificial wetland drainage, tillage and fire management and crop residue management, an element of crop harvest). Although we identify multiple impediments to progress, we conclude that the current status of process understanding and data availability is sufficient to advance with incorporating management in, for example, Earth system or dynamic vegetation models in order to provide a systematic assessment of their role in the Earth system. This review contributes to a strategic prioritization of research efforts across multiple disciplines, including land system research, ecological research and Earth system modelling.
Novel Gut-Based Pharmacology of Metformin in Patients with Type 2 Diabetes Mellitus

Metformin, a biguanide derivate, has pleiotropic effects beyond glucose reduction, including improvement of lipid profiles and lowering microvascular and macrovascular complications associated with type 2 diabetes mellitus (T2DM). These effects have been ascribed to adenosine monophosphate-activated protein kinase (AMPK) activation in the liver and skeletal muscle. However, metformin effects are not attenuated when AMPK is knocked out and intravenous metformin is less effective than oral medication, raising the possibility of important gut pharmacology. We hypothesized that the pharmacology of metformin includes alteration of bile acid recirculation and gut microbiota resulting in enhanced enteroendocrine hormone secretion. In this study we evaluated T2DM subjects on and off metformin monotherapy to characterize the gut-based mechanisms of metformin. Subjects were studied at 4 time points: (i) at baseline on metformin, (ii) 7 days after stopping metformin, (iii) when fasting blood glucose (FBG) had risen by 25% after stopping metformin, and (iv) when FBG returned to baseline levels after restarting the metformin. At these timepoints we profiled glucose, insulin, gut hormones (glucagon-like peptide-1 (GLP-1), peptide tyrosine-tyrosine (PYY) and glucose-dependent insulinotropic peptide (GIP) and bile acids in blood, as well as duodenal and faecal bile acids and gut microbiota. We found that metformin withdrawal was associated with a reduction of active and total GLP-1 and elevation of serum bile acids, especially cholic acid and its conjugates. These effects reversed when metformin was restarted. Effects on circulating PYY were more modest, while GIP changes were negligible. Microbiota abundance of the phylum Firmicutes was positively correlated with changes in cholic acid and conjugates, while Bacteroidetes abundance was negatively correlated. Firmicutes and Bacteroidetes representation were also correlated with levels of serum PYY. Our study suggests that metformin has complex effects due to gut-based pharmacology which might provide insights into novel therapeutic approaches to treat T2DM and associated metabolic diseases. Trial Registration: www.ClinicalTrials. gov NCT01357876
Specificity and sensitivity of transcranial sonography of the substantia nigra in the diagnosis of Parkinson's disease: prospective cohort study in 196 patients

Objective Numerous ultrasound studies have suggested that a typical enlarged area of echogenicity in the substantia nigra (SN+) can help diagnose idiopathic Parkinson's disease (IPD). Almost all these studies were retrospective and involved patients with well-established diagnoses and long-disease duration. In this study the diagnostic accuracy of transcranial sonography (TCS) of the substantia nigra in the patient with an undiagnosed parkinsonian syndrome of recent onset has been evaluated. Design Prospective cohort study for diagnostic accuracy. Setting Neurology outpatient clinics of two teaching hospitals in the Netherlands. Patients 196 consecutive patients, who were referred to two neurology outpatient clinics for analysis of clinically unclear parkinsonism. Within 2 weeks of inclusion all patients also underwent a TCS and a 123I-ioflupane Single Photon Emission CT (FP-CIT SPECT) scan of the brain (n=176). Outcome measures After 2 years, patients were re-examined by two movement disorder specialist neurologists for a final clinical diagnosis, that served as a surrogate gold standard for our study. Results Temporal acoustic windows were insufficient in 45 of 241 patients (18.67%). The final clinical diagnosis was IPD in 102 (52.0%) patients. Twenty-four (12.3%) patients were diagnosed with atypical parkinsonisms (APS) of which 8 (4.0%) multisystem atrophy (MSA), 6 (3.1%) progressive supranuclear palsy (PSP), 6 (3.1%) Lewy body dementia and 4 (2%) corticobasal degeneration. Twenty-one (10.7%) patients had a diagnosis of vascular parkinsonism, 20 (10.2%) essential tremor, 7 (3.6%) drug-induced parkinsonism and 22 (11.2%) patients had no parkinsonism but an alternative diagnosis. The sensitivity of a SN+ for the diagnosis IPD was 0.40 (CI 0.30 to 0.50) and the specificity 0.61 (CI 0.52 to 0.70). Hereby the positive predictive value (PPV) was 0.53 and the negative predictive value (NPV) 0.48. The sensitivity and specificity of FP-CIT SPECT scans for diagnosing IPD was 0.88 (CI 0.1 to 0.95) and 0.68 (CI 0.58 to 0.76) with a PPV of 0.75 and an NPV of 0.84. Conclusions The diagnostic accuracy of TCS in early stage Parkinson's disease is not sufficient for routine clinical use. Clinicaltrials.gov identifier NCT0036819
Supporting Family Carers of Community-Dwelling Elder with Cognitive Decline: A Randomized Controlled Trial

Objective. Caring for a patient with cognitive decline has an important impact on the general well-being of family caregivers. Although highly appreciated, interventions in dementia home care remain mainly ineffective in terms of well-being. Consequently, in spite of an extensive support system, abrupt ending of home care remains more rule than exception. Method. The hypothesis was that the intervention of a care counselor, coordinating care in quasi-unstructured way during one year, will alleviate caregivers' feelings of depression. The study population was composed of community-dwelling patients with cognitive decline. A care counselor was at the exclusive disposal of the intervention group. Primary outcome measure was caregiver depression. Results. Finally, depression was 6.25 times less frequent in the intervention group. The actual intervention appeared minimal with only ten applications for more support followed by only three interventions effectively carried out. Although caregivers felt burdened and depressed, formal support remained stable. On the other hand, the availability of the care counselor made caregivers feel less depressed with the same amount of support. Conclusion. Carers do not always need to be surrounded with more professionals, but they want to feel more supported. In terms of policy, this could have some important implications.
miR-142 orchestrates a network of actin cytoskeleton regulators during megakaryopoiesis

Genome-encoded microRNAs (miRNAs) provide a posttranscriptional regulatory layer that controls the differentiation and function of various cellular systems, including hematopoietic cells. miR-142 is one of the most prevalently expressed miRNAs within the hematopoietic lineage. To address the in vivo functions of miR-142, we utilized a novel reporter and a loss-of-function mouse allele that we have recently generated. In this study, we show that miR-142 is broadly expressed in the adult hematopoietic system. Our data further reveal that miR-142 is critical for megakaryopoiesis. Genetic ablation of miR-142 caused impaired megakaryocyte maturation, inhibition of polyploidization, abnormal proplatelet formation, and thrombocytopenia. Finally, we characterized a network of miR-142-3p targets which collectively control actin filament homeostasis, thereby ensuring proper execution of actin-dependent proplatelet formation. Our study reveals a pivotal role for miR-142 activity in megakaryocyte maturation and function, and demonstrates a critical contribution of a single miRNA in orchestrating cytoskeletal dynamics and normal hemostasis. DOI: http://dx.doi. org/10.7554/eLife.01964. 001
Tuning of the Human Neocortex to the Temporal Dynamics of Attended Events

Previous studies raise the hypothesis that attentional bias in the phase of neocortical excitability fluctuations (oscillations) represents a fundamental mechanism for tuning the brain to the temporal dynamics of task-relevant event patterns. To evaluate this hypothesis, we recorded intracranial electrocortical activity in human epilepsy patients while they performed an audiovisual stream selection task. Consistent with our hypothesis, (1) attentional modulation of oscillatory entrainment operates in a distinct network of areas including auditory, visual, posterior parietal, inferior motor, inferior frontal and superior midline frontal cortex, (2) the degree of oscillatory entrainment depends on the predictability of the stimulus stream, and (3) the attentional phase shift of entrained oscillation cooccurs with classical attentional effects observed on phase-locked evoked activity in sensory-specific areas but seems to operate on entrained low-frequency oscillations that cannot be explained by sensory activity evoked at the rate of stimulation. Thus, attentional entrainment appears to tune a network of brain areas to the temporal dynamics of behaviorally relevant event streams, contributing to its perceptual and behavioral selection.
Reduced-size dual band Wilkinson power dividers

In this paper, two new shaped dual band Wilkinson power dividers are presented. These configurations achieve significant size reduction and very good performance as compared to the conventional dual band Wilkinson power divider. Simulation and experimental results of two reduced size dividers at the receiving bands of the global system for mobile communication GSM demonstrate the realizablity and performance of the proposed configurations. The implementation of the proposed structures on GaAs (gallium arsenide) for X-band and Ku-band satellite down-link bands yields miniature configurations appropriate for MIC/MMIC applications.
Utility of single-slice high-resolution CT in upper lung field combined with low-dose spiral CT for lung-cancer screening in the detection of emphysema.

OBJECT The present study was undertaken to evaluate the utility of low-dose spiral CT scanning, combined with single-slice high-resolution CT (HRCT), in the detection of pulmonary emphysema on CT (CTPE) together with screening for lung cancer. SUBJECTS AND METHODS For 657 individuals who visited for screening of lung cancer, single-slice HRCT of the upper lung field was added on conventional low-dose spiral CT scanning in order to detect low attenuation area (LAA) visually. The individuals were classified into four groups according to the visual extent of LAA in bilateral upper lung fields: no LAA, subtle PE (0%25%), and compared spirometry among the four groups. RESULTS LAA was detected in 23.3% of all subjects (subtle PE in 12.2%, mild PE in 9.9% and moderate to severe PE in 1.2%) by adding one HRCT slice whereas only in 6.4 % LAA was detected by conventional low-dose helical CT scanning at 10 mm slice alone. The airway obstruction (FEV1/FVC<70%) was observed only in 1.07%. The severity of emphysema was associated with older age, prevalence of having smoking history and Brinkman index. As the severity of emphysema, the FEV1/FVC, MMEF, and V25/HT showed lower values. CONCLUSIONS It is suggested that single-slice HRCT of the upper lung field combined with conventional low-dose spiral CT scanning for screening of lung cancer may also be useful for the detection of LAA, which may promote smoking cessation.
Evaluation of plasma antioxidant activity in rats given excess EGCg with reference to endogenous antioxidants concentrations and assay methods

Abstract The contribution of (−)-epigallocatechin gallate (EGCg) intake to in vivo antioxidant activity is unclear, even with respect to plasma. In this study, we examined how administration of EGCg contributes to plasma antioxidant activity, relative to its concentration, endogenous antioxidants, and assay methods, namely oxygen radical absorbance capacity (ORAC) and ferric reducing/antioxidant power (FRAP). Administration of EGCg (500 mg/kg) to rats increased plasma EGCg (4μmol/L as free form) and ascorbic acid (1.7-fold), as well as ORAC (1.2-fold) and FRAP (3-fold) values. The increase in plasma ascorbic acid following EGCg administration was accompanied by its relocation from the adrenal glands and lymphocytes into plasma, and was related to the increase in FRAP. Plasma deproteinization and assays in plasma model solutions revealed that protein levels significantly contributed to ORAC values, where <3 μmol/L EGCg in the presence of protein exhibited minimal antioxidant activity, as measured by both FRAP and ORAC. As the concentration of plasma ascorbic acid was not influenced by deproteinization, differences in FRAP values with and without deproteinization were estimated to determine the contribution of enhanced ascorbic acid attributable to EGCg administration. These results will help to understand the points that should be considered when evaluating EGCg antioxidant activity in plasma.