Miracle-dz/UniFAR-FTUs huggingface dataset:
An intelligent oil reservoir identification approach by deploying quantum Levenberg-Marquardt neural network and rough set

An intelligent identification approach combining the features of parallel computation of quantum Levenberg-Marquardt neural network (Q-LM-NN) and information reduct of rough set is proposed as an improved alternative to common statistical identification methods and single-intelligent-based methods which are unable to attain satisfactory result in engineering applications. This approach has been tested to have better performance on reducing the cost and improving the identification accuracy than other methods in practical oil log applications.
Contrasting germination responses to vegetative canopies experienced in pre- vs. post-dispersal environments.

BACKGROUND Seeds adjust their germination based on conditions experienced before and after dispersal. Post-dispersal cues are expected to be more accurate predictors of offspring environments, and thus offspring success, than pre-dispersal cues. Therefore, germination responses to conditions experienced during seed maturation may be expected to be superseded by responses to conditions experienced during seed imbibition. In taxa of disturbed habitats, neighbours frequently reduce the performance of germinants. This leads to the hypotheses that a vegetative canopy will reduce germination in such taxa, and that a vegetative canopy experienced during seed imbibition will over-ride germination responses to a canopy experienced during seed maturation, since it is a more proximal cue of immediate competition. These hypotheses were tested here in Arabidopsis thaliana METHODS: Seeds were matured under a simulated canopy (green filter) or white light. Fresh (dormant) seeds were imbibed in the dark, white light or canopy at two temperatures (10 or 22 °C), and germination proportions were recorded. Germination was also recorded in after-ripened (less dormant) seeds that were induced into secondary dormancy and imbibed in the dark at each temperature, either with or without brief exposure to red and far-red light. KEY RESULTS Unexpectedly, a maturation canopy expanded the conditions that elicited germination, even as seeds lost and regained dormancy. In contrast, an imbibition canopy impeded or had no effect on germination. Maturation under a canopy did not modify germination responses to red and far-red light. Seed maturation under a canopy masked genetic variation in germination. CONCLUSIONS The results challenge the hypothesis that offspring will respond more strongly to their own environment than to that of their parents. The observed relaxation of germination requirements caused by a maturation canopy could be maladaptive for offspring by disrupting germination responses to light cues after dispersal. Alternatively, reduced germination requirements could be adaptive by allowing seeds to germinate faster and reduce competition in later stages even though competition is not yet present in the seedling environment. The masking of genetic variation by maturation under a canopy, moreover, could impede evolutionary responses to selection on germination.
Context-based Pseudonym Changing Scheme for Vehicular Adhoc Networks

Vehicular adhoc networks allow vehicles to share their information for safety and traffic efficiency. However, sharing information may threaten the driver privacy because it includes spatiotemporal information and is broadcast publicly and periodically. In this paper, we propose a context-adaptive pseudonym changing scheme which lets a vehicle decide autonomously when to change its pseudonym and how long it should remain silent to ensure unlinkability. This scheme adapts dynamically based on the density of the surrounding traffic and the user privacy preferences. We employ a multi-target tracking algorithm to measure privacy in terms of traceability in realistic vehicle traces. We use Monte Carlo analysis to estimate the quality of service (QoS) of a forward collision warning application when vehicles apply this scheme. According to the experimental results, the proposed scheme provides a better compromise between traceability and QoS than a random silent period scheme.
Nocturnal Oxygen Desaturation and Disordered Sleep as a Potential Factor in Executive Dysfunction in Sickle Cell Anemia

Abstract Previous research has identified cognitive impairment in children with sickle cell anemia (SCA, Hemoglobin SS) compared with controls, partly accounted for by overt neuropathology after clinical stroke, “covert” (“silent”) infarction, and severity of anemia. However, cognitive deficits have also been identified in children with SCA with no history of stroke and a normal T2-weighted magnetic resonance imaging (MRI) scan. Our aim was to investigate whether nocturnal hemoglobin oxygen desaturation and sleep fragmentation could be associated with cognitive impairment in children with SCA. We assessed 10 children with SCA (9 with normal MRI) using neuropsychological measures of executive function. Cognitive assessment was immediately followed by overnight polysomnography to record nocturnal hemoglobin oxygen saturation and sleep arousals. Decreases in hemoglobin oxygen saturation and/or increased sleep arousals were associated with reduced performance on cognitive assessment. Nocturnal hemoglobin oxygen desaturation and sleep fragmentation may be a contributing factor to executive dysfunction in SCA. (JINS, 2012, 18, 168–173)
Biodiversity Education: A teacher's perspective

Reduction in biodiversity has been established as a global environmental issue, mainly over the last 10 years. However, there is disagreement amongst experts whether it is a natural phenomenon or strongly influenced by human activity. This article considers biodiversity as a controversial issue in the education of students of 11-18 years of age in schools, particularly in relation to science education. It includes a study of teachers' attitudes and approaches to biodiversity education in the UK and was undertaken using participatory appraisal methods with 'focus' groups of teachers. It was shown that the teachers in the study were frequently well informed, they considered biodiversity to be an important issue and although the formal science curriculum had a contribution to make it was also a matter that the whole institution could address. Suggestions for evaluating the possible indicators and outcomes of effective biodiversity education were made. In conclusion it was shown that while programmes included many of the essential components of knowledge for biodiversity education there was usually little attempt to ensure that students achieved a more coherent understanding of the complex issue or how to deal with matters that are truly controversial. The methodology provided a useful model for reflection on practice and professional development in many possible contexts.
A Study of relationship between frailty and physical performance in elderly women

Frailty is a disorder of multiple inter-related physiological systems. It is unclear whether the level of physical performance factors can serve as markers of frailty and a sign. The purpose of this study was to examine the relationship between frailty and physical performance in elderly women. One hundred fourteen elderly women participated in this study, their aged was from 65 to 80. We were measured 6-min walk test, grip-strength, 30-sec arm curl test, 30-sec chair stand test, 8 foot Up- and Go, Back scratch, chair sit and reach, unipedal stance, BMI, and the frailty with questionnaire. The collected data were analyzed by descriptive statistics, frequencies, correlation analysis, ANOVA, and simple liner regression using the IBM 21. SPSS program. In results, statistic tests showed that there were significant differences between frailty and 6-min walk test, 30-sec arm curl test, 30-sec chair stand test, grip-strength, Back scratch, and BMI. However, we did not find significant differences between frailty and 8 foot Up- and Go, unipedal stance. When the subjects were divided into five groups according to physical performance level, subjects with high 6-min walk, 30-sec arm curl test, chair sit and reach test, and high grip strength had low score frailty. Physical performance factors were strongly associated with decreased frailty, suggesting that physical performance improvements play an important role in preventing or reducing the frailty.
Becoming a craftsman in the process of school-based social studies curriculum development

Using an autoethnographic approach, this paper reviews and examines how I went through my professional development journey to develop as a curriculum planner and manager by engaging in critical reflective practices to enhance the quality of teaching and learning in the era of Curriculum Reform in Hong Kong. A series of carefully selected critical incidents relating to school-based curriculum development were examined to witness how I approached a brand new primary Social Studies area of study and developed it as a distinct multi-disciplinary school-based curriculum. The curriculum documents, learning and teaching materials, students’ work, personal reflective writings as well as personal communications with parents and students were collected for thematic analyses. By reflecting on the critical curriculum development and implementation incidents, a school-based curriculum development model evolved. This helps shed light on how school practitioners, irrespective of their positions or teaching experiences, to engage fruitfully and continually in the professional development process to develop as an effective curriculum developer and manager in schools. The experiences also inform teacher educators as well as school practitioners the salient characteristics and needs for a teacher to grow up as a reflective practitioner.
Semi-Stacking for Semi-supervised Sentiment Classification

In this paper, we address semi-supervised sentiment learning via semi-stacking, which integrates two or more semi-supervised learning algorithms from an ensemble learning perspective. Specifically, we apply metalearning to predict the unlabeled data given the outputs from the member algorithms and propose N-fold cross validation to guarantee a suitable size of the data for training the meta-classifier. Evaluation on four domains shows that such a semi-stacking strategy performs consistently better than its member algorithms.
Voice Problems in Hong Kong: A Preliminary Report

This study provided a preliminary investigation of the occurrence and distribution of voice problems of residents of Hong Kong. The subjects were sampled from patients receiving voice therapy. Background data such as laryngeal pathologies, age, sex, occupations and other “at-risk” factors are presented. Vocal abuse appears to be the primary underlying cause of vocal pathologies found in this sample. Investigation of the parameters of voice indicated that the phonatory ability, as measured by maximum phonation time of subjects with laryngeal pathologies was greatly reduced. Perceptual analysis of voice quality revealed that harshness (irregular glottal wave) was more prevalent than whisperiness (noise components of turbulent air).
Homeschooling: Creating Alternatives to Education

By drawing on the work of Ivan Illich, John Holt, and Jacques Ellul, one can see that alternatives to the modern concept of education are desirable and practical. The homeschooling movement enables teachers, parents, and children to step outside the concept of education and discover how it is possible to teach and learn in various ways throughout their lives, not just through organized learning in conventional schools. By using homeschooling as the lens to view the concept of producing "good citizens" (the stated purpose for compulsory schooling), new possibilities for achieving lifelong learning can be seen. This analysis also suggests how technology can become a means to achieve various personal ends, rather than just an expansion of educational techniques to use on people.
Iraq Body Count

‘Iraq body count’ is a sonic representation (i.e. a sonification) of the number of casualties of Iraqi civilians and US and UK soldiers during the period January 2003 to April 2004. The daily price of crude oil on the stock exchange is also represented in the background. Data were collected from the Iraq Body Count website www.iraqbodycount. net; the Iraq Coalition casualty Count website http://lunaville.org/ and Yahoo! Finance website. Since ‘Iraq Body Count’ uses reported numbers, the real number of casualties is probably much higher during the sonified period. Despite the terrible death toll in Iraq and among coalition forces, the unAustralian government is still in support of the unAmerican invasion of Iraq.
The implementation and evaluation of a mandatory multi‐professional obstetric skills training program

Objective. To implement and evaluate a simulation‐based training program. Design. Descriptive. Study period: June 2003–June 2006. Setting. Obstetric Department, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark. Population. Two training sessions were provided for all health professionals including doctors, midwives, auxiliary nurses, and 147 out 156 participants (94%) took part in the first training session and 192 out possible 201 (96%) took part in the second session. Methods. An intervention study of the impact of simulation‐based training in management of postpartum bleeding, shoulder dystocia, basic neonatal resuscitation, and severe preeclampsia. Main outcome measures. Before, just after and 9–15 months following the training, data were collected on the confidence and stress levels relating to the carrying out of certain procedures. In addition, a written objective test on basic neonatal resuscitation was administered. Data on any changes in work‐routines experienced by the participants were obtained by open‐ended questions. Registry data from the Danish Medical Birth Registry and from the hospital administration were included in the analysis. Results. Ninety‐two percent of all respondents had a positive attitude toward the training program. They considered management of shoulder dystocia, preeclampsia, and neonatal resuscitation less stresful and less unpleasant to perform after training. Confidence scores for all the trained skills improved significantly. A significant association was found between confidence in neonatal resuscitation and numbers of correct answers in the objective test. More than 90% found the training to have had a positive influence on their work. The need for organizational changes in the department became evident and necessary changes were implemented. Sick leave amongst midwives diminished significantly during the study period. Conclusions. A comprehensive evaluation of a mandatory simulation‐based program, implemented in a obstetric department, demonstrated a positive impact at individual and organizational levels.
X-Ray Reflection from Inhomogeneous Accretion Disks. II. Emission-Line Variability and Implications for Reverberation Mapping

One of the principal scientific objectives of the upcoming Constellation-X mission is to attempt to map the inner regions of accretion disks around black holes in Seyfert galaxies by reverberation mapping of the Fe Kα fluorescence line. This area of the disk is likely to be radiation pressure dominated and subject to various dynamical instabilities. Here, we show that density inhomogeneities in the disk atmosphere resulting from the photon bubble instability (PBI) can cause rapid changes in the X-ray reflection features, even when the illuminating flux is constant. Using a simulation of the development of the PBI, we find that for the disk parameters chosen, the Fe Kα and O VIII Lyα lines vary on timescales as short as a few hundredths of an orbital period. In response to the changes in accretion disk structure, the Fe Kα equivalent width (EW) shows variations as large as ~100 eV. The magnitude and direction (positive or negative) of the changes depends on the ionization state of the atmosphere. The largest changes are found when the disk is moderately ionized. The O VIII EW varies by tens of eV and exhibits plenty of rapid, low-amplitude changes. This effect provides a natural explanation for some observed instances of short-timescale Fe Kα variability that was uncorrelated with the continuum (e.g., Mrk 841). New predictions for Fe Kα reverberation mapping should be made that include the effects of this accretion disk-driven line variability and a variable ionization state. Reflection spectra averaged over the evolution of the instability are well fitted by constant-density models in the 2-10 keV region.
Dynamic changes in the expression of MicroRNA‐31 during inflammatory bowel disease‐associated neoplastic transformation

Background: Patients with inflammatory bowel disease (IBD) are at increased risk of developing colorectal cancer. Aberrant microRNA (miR) expression has been linked to carcinogenesis; however, no reports document a relationship between IBD‐related neoplasia (IBDN) and altered miR expression. In the current study we sought to identify specific miR dysregulation along the normal–inflammation–cancer axis. Methods: miR microarrays and quantitative reverse‐transcriptase polymerase chain reaction (RT‐PCR) were used to detect dysregulated miRs. Receiver operating characteristic curve analysis was employed to test for potential usefulness of miR‐31 as a disease marker of IBDNs. In silico prediction analysis, Western blot, and luciferase activity measurement were employed for target identification. Results: Several dysregulated miRs were identified between chronically inflamed mucosae and dysplasia arising in IBD. MiR‐31 expression increases in a stepwise fashion during progression from normal to IBD to IBDN and accurately discriminated IBDNs from normal or chronically inflamed tissues in IBD patients. Finally, we identified factor inhibiting hypoxia inducible factor 1 as a direct target of miR‐31. Conclusions: Our study reveals specific miR dysregulation as chronic inflammation progresses to dysplasia. MiR‐31 expression levels increase with disease progression and accurately discriminates between distinct pathological entities that coexist in IBD patients. The novel effect of miR‐31 on regulating factor inhibiting hypoxia inducible factor 1 expression provides a new insight on the pathogenesis of IBDN. (Inflamm Bowel Dis 2011;)
Power management and control of a wind energy conversion system (WECS) with a fuzzy logic based maximum power point tracking (MPPT)

This paper proposed a power management technique for a wind energy conversion system (WECS) with maximum power point tracking (MPPT). A two stage converter is proposed for the battery charger for energy storage purpose and for providing excess power to the “dump load” when there is surplus power in the battery and demanded by the load. The MPPT control algorithm used in the front-end converter is based on fuzzy logic control (FLC) technique. By monitoring the generator output power, the DC-link power and the load power, the proposed power management scheme is able to deliver maximum power from the wind and to control the power extracted from the wind when maximum power is not required from the load side. Simulation results will be given to highlight the merits of the proposed work.
Identification of Proteins Associated with Polyhydroxybutyrate Granules from Herbaspirillum seropedicae SmR1 - Old Partners, New Players

Herbaspirillum seropedicae is a diazotrophic ß-Proteobacterium found associated with important agricultural crops. This bacterium produces polyhydroxybutyrate (PHB), an aliphatic polyester, as a carbon storage and/or source of reducing equivalents. The PHB polymer is stored as intracellular insoluble granules coated mainly with proteins, some of which are directly involved in PHB synthesis, degradation and granule biogenesis. In this work, we have extracted the PHB granules from H. seropedicae and identified their associated-proteins by mass spectrometry. This analysis allowed us to identify the main phasin (PhaP1) coating the PHB granule as well as the PHB synthase (PhbC1) responsible for its synthesis. A phbC1 mutant is impaired in PHB synthesis, confirming its role in H. seropedicae. On the other hand, a phaP1 mutant produces PHB granules but coated mainly with the secondary phasin (PhaP2). Furthermore, some novel proteins not previously described to be involved with PHB metabolism were also identified, bringing new possibilities to PHB function in H. seropedicae.
An Improved Shuffled Frog Leaping Algorithm with Single Step Search Strategy and Interactive Learning Rule for Continuous Optimization

Shuffled frog-leaping algorithm (SFLA) is a heuristic optimization technique based on swarm intelligence that is inspired by foraging behavior of the swarm of frogs. The traditional SFLA is easy to be premature convergence. So, we present an improved shuffled frog-leaping algorithm with single step search strategy and interactive learning rule(called ‘SI-SFLA’). Single step search strategy enhances exploring ability of algorithm for higher dimension and interactive learning rule strengthens the diversity of local memeplexe. The effectiveness of the method is tested on many benchmark problems with different characteristics and the results are compared with other algorithms including PSO,SFLA,DE and TLBO. The experimental results show that SI-SFLA has not only a promising performance of searching for accurate solutions, but also a fast convergence rate, which are evaluated using benchmark functions.
Treatment of acute otitis media in children under 2 years of age.

BACKGROUND Recommendations vary regarding immediate antimicrobial treatment versus watchful waiting for children younger than 2 years of age with acute otitis media. METHODS We randomly assigned 291 children 6 to 23 months of age, with acute otitis media diagnosed with the use of stringent criteria, to receive amoxicillin-clavulanate or placebo for 10 days. We measured symptomatic response and rates of clinical failure. RESULTS Among the children who received amoxicillin-clavulanate, 35% had initial resolution of symptoms by day 2, 61% by day 4, and 80% by day 7; among children who received placebo, 28% had initial resolution of symptoms by day 2, 54% by day 4, and 74% by day 7 (P=0.14 for the overall comparison). For sustained resolution of symptoms, the corresponding values were 20%, 41%, and 67% with amoxicillin-clavulanate, as compared with 14%, 36%, and 53% with placebo (P=0.04 for the overall comparison). Mean symptom scores over the first 7 days were lower for the children treated with amoxicillin-clavulanate than for those who received placebo (P=0.02). The rate of clinical failure--defined as the persistence of signs of acute infection on otoscopic examination--was also lower among the children treated with amoxicillin-clavulanate than among those who received placebo: 4% versus 23% at or before the visit on day 4 or 5 (P<0.001) and 16% versus 51% at or before the visit on day 10 to 12 (P<0.001). Mastoiditis developed in one child who received placebo. Diarrhea and diaper-area dermatitis were more common among children who received amoxicillin-clavulanate. There were no significant changes in either group in the rates of nasopharyngeal colonization with nonsusceptible Streptococcus pneumoniae. CONCLUSIONS Among children 6 to 23 months of age with acute otitis media, treatment with amoxicillin-clavulanate for 10 days tended to reduce the time to resolution of symptoms and reduced the overall symptom burden and the rate of persistent signs of acute infection on otoscopic examination. (Funded by the National Institute of Allergy and Infectious Diseases; ClinicalTrials.gov number, NCT00377260.).