705 research outputs found

    Proximity Full-Text Search with a Response Time Guarantee by Means of Additional Indexes

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    Full-text search engines are important tools for information retrieval. Term proximity is an important factor in relevance score measurement. In a proximity full-text search, we assume that a relevant document contains query terms near each other, especially if the query terms are frequently occurring words. A methodology for high-performance full-text query execution is discussed. We build additional indexes to achieve better efficiency. For a word that occurs in the text, we include in the indexes some information about nearby words. What types of additional indexes do we use? How do we use them? These questions are discussed in this work. We present the results of experiments showing that the average time of search query execution is 44-45 times less than that required when using ordinary inverted indexes. This is a pre-print of a contribution "Veretennikov A.B. Proximity Full-Text Search with a Response Time Guarantee by Means of Additional Indexes" published in "Arai K., Kapoor S., Bhatia R. (eds) Intelligent Systems and Applications. IntelliSys 2018. Advances in Intelligent Systems and Computing, vol 868" published by Springer, Cham. The final authenticated version is available online at: https://doi.org/10.1007/978-3-030-01054-6_66. The work was supported by Act 211 Government of the Russian Federation, contract no 02.A03.21.0006.Comment: Alexander B. Veretennikov. Chair of Calculation Mathematics and Computer Science, INSM. Ural Federal Universit

    Estudo preliminar sobre a ocorrência de fungos queratinofílicos em solos da Jamaica

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    This report represents the first study of keratinophilic fungi present in soils of Jamaica. Out of the 40 soil samples examined from different habitats, 30 (75%) were positive for the presence of keratinophilic fungi, yielding 36 isolates of keratinophilic fungi. Microsporum gypseum complex (represented by 16 isolates of M. gypseum, and four of M. fulvum) was most frequent, being present in 50% of the samples. A very high occurrence of this dermatophyte in Jamaican soil is of public health significance. The remaining isolates of keratinophilic fungi were represented by Chrysosporium spp (mainly C. indicum and C. tropicum) and Sepedonium sp.Esta comunicação representa o primeiro estudo sobre fungos queratinofílicos presentes em solos da Jamaica. De 40 amostras de solo examinadas de diferentes localidades, 30 (75%) foram positivas para a presença de fungos queratinofílicos permitindo 36 isolamentos dos mesmos. O complexo Microsporum gypseum (representados por 16 isolamentos de M. gypseum e quatro de M. fulvum) foi o mais frequente, estando presente em 50% das amostras. A muito alta ocorrência deste dermatófito no solo da Jamaica é significante para a saúde pública. Os isolados remanescentes de fungos queratinofílicos foram representados pelo Chrysosporium spp (principalmente C. indicum e C. tropicum) e Sepedonium sp

    Charting the path toward a greener world: A review of facilitating and inhibiting factors for carbon neutrality

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    The carbon neutrality (CN) literature has witnessed a mushrooming growth but also limited attempts to systematize the mass of evidence running in multiple directions. The consequent accumulation of fragmented insights can confuse concerned stakeholders, causing them to neglect or miss crucial discussions. Our study addresses this concern by undertaking a systematic literature review (SLR) of congruent studies to delineate the facilitating and inhibiting factors that support or impede the efficacious achievement of CN targets. Given the vastness of the extant literature, we limited our review to five sectors: manufacturing, energy, transportation, agriculture, and construction (METAC), since these are known to be among the highest contributors to emissions. Using a rigorous search and filtration protocol, we shortlisted 149 studies for inclusion in the review. Going beyond the curation of insights and identifying research gaps to suggest potential research questions for future investigations, our SLR contributes significantly by synthesizing facilitators and inhibitors from the reported evidence. At the same time, identifying stimulating forces and impeding hurdles helped us highlight areas requiring policy attention and managerial action to support the achievement of CN targets.publishedVersio

    An evaluation of microleakage of various glass ionomer based restorative materials in deciduous and permanent teeth: An in vitro study

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    AbstractAimTo evaluate the microleakage of recently available glass ionomer based restorative materials (GC Fuji IX GP, GC Fuji VII, and Dyract) and compare their microleakage with the previously existing glass ionomer restorative materials (GC Fuji II LC) in primary and permanent teeth.MethodOne hundred and fifty (75+75) non-carious deciduous and permanent teeth were restored with glass ionomer based restorative materials after making class I cavities. Samples were subjected to thermocycling after storing in distilled water for 24h. Two coats of nail polish were applied 1mm short of restorative margins and samples sectioned buccolingually after storing in methylene blue dye for 24h. Microleakage was assessed using stereomicroscope.ResultSignificant differences (P<0.05) were found when inter group comparisons were done. Except when GC Fuji VII (Group III) was compared with GC Fuji II LC (Group II) and Dyract (Group IV), non-significant differences (P>0.05) were observed. It was found that there was no statistically significant difference when the means of microleakage of primary teeth were compared with those of permanent teeth.ConclusionsGC Fuji IX GP showed maximum microleakage and GC Fuji VII showed least microleakage

    Attitudes and factors involved in decision-making around complementary and alternative medicines (CAMs) by older Australians: A qualitative study

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    Introduction: Recent evidence has indicated that older Australians are increasingly turning to complementary and alternative medicines (CAMs) to address a variety of health issues. This qualitative study aimed to explore the attitudes and factors involved in decision-making around CAMs by older Australians upon the completion of a CAM educational intervention. Methods: Men and women aged over 65 years living in New South Wales, Australia were invited to participate in semi-structured interviews after taking part in a randomised control trial. Interviews were analysed using the framework approach. Results: A total of 20 participants aged over 65 years were interviewed. Themes captured the participants heightened awareness on their decision-making processes when choosing CAM, their increased sense of ability to make empowered and informed decisions regarding CAM, and pre-existing knowledge, or lack of, that impacted their ability to make decisions. Conclusions: The nature of health-related decision-making for older Australians around CAM is multifaceted and involves a consideration of their personal beliefs and experiences, social networks, education levels, healthcare professionals amongst other factors

    Enhancing Upper Limb Recovery and Reducing Stress and Anxiety Through Non-Immersive Virtual Reality in Subacute and Chronic Stroke Survivors: An Experimental Study

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    Introduction: Stroke is the third-leading cause of major long-term disability and the second-leading cause of mortality worldwide. Paralysis, paresis (muscle weakness), spasticity, difficulty walking, difficulty controlling motions, and limb discomfort are frequent limb impairments. Nearly 80% of stroke survivors are affected. Stroke survivors suffer with physical disabilities in addition to a reduced quality of life in terms of their health, a higher degree of worry, and a loss of independence. With a prevalence of 55% to 75%, hand motor deficits are the most prevalent post-stroke.1 The most common impairment is motor dysfunction, which affects 90% of stroke survivors with some kind of upper limb motor disability. Motor dysfunction is a strong indicator of poor functional recovery. The most typical post-stroke symptom is hemiparesis.1 Objectives: The study's objective was to use a virtual reality system to enhance upper limb strength and function in hemiparesis. The study's secondary goal was to lessen tension and anxiety in stroke Survivors. Methods: This research was experimental. A patient was chosen from UEM Hospital in Jaipur, Rajasthan, based on inclusion and exclusion criteria. Upper Extremity Functional Index (UEFI) and Depression Anxiety Stress Scale (DASS-21) were employed as outcome measures to evaluate the patients. Result: The outcome of the post-intervention data revealed that the Upper Extremity Functional Index (UEFI) had significant values of P.311. P .002 was used to determine the importance of the Depression Anxiety Stress Scale (DASS-21). That indicates that following the intervention, all outcome indicators showed a considerable improvement. Conclusion: The post-intervention values of the depression anxiety stress scale (DASS 21) and the upper extremity functional index (UEFI) both indicated a substantial improvement. In order to improve strength and upper limb functions following hemiparesis and to lessen tension and anxiety as a result of the handicap, a low-cost VR system might be employed

    Cavity-enhanced polarization rotation measurements for low-disturbance probing of atoms

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    We propose and demonstrate cavity-enhanced polarization-rotation measurement as a means to detect magnetic effects in transparent media with greater sensitivity at equal optical disturbance to the medium. Using the Jones calculus, we compute the effective polarization rotation effect in a Fabry-Perot cavity containing a magnetic medium, including losses due to enclosure windows or other sources. The results show that when measuring polarization rotation, collecting the transmitted light has advantages in simplicity and linearity relative to collecting the reflected light. We demonstrate the technique by measuring Faraday rotation in a 87Rb atomic ensemble in the single-pass and cavity-enhanced geometries, and observe enhancement in good agreement with the theoretical predictions. We also demonstrate shot-noise-limited operation of the enhanced rotation scheme in the small-angle regime.Peer ReviewedPostprint (published version

    Extending Science Gateway Frameworks to Support Big Data Applications in the Cloud

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    Cloud computing offers massive scalability and elasticity required by many scientific and commercial applications. Combining the computational and data handling capabilities of clouds with parallel processing also has the potential to tackle Big Data problems efficiently. Science gateway frameworks and workflow systems enable application developers to implement complex applications and make these available for end-users via simple graphical user interfaces. The integration of such frameworks with Big Data processing tools on the cloud opens new oppor-tunities for application developers. This paper investigates how workflow sys-tems and science gateways can be extended with Big Data processing capabilities. A generic approach based on infrastructure aware workflows is suggested and a proof of concept is implemented based on the WS-PGRADE/gUSE science gateway framework and its integration with the Hadoop parallel data processing solution based on the MapReduce paradigm in the cloud. The provided analysis demonstrates that the methods described to integrate Big Data processing with workflows and science gateways work well in different cloud infrastructures and application scenarios, and can be used to create massively parallel applications for scientific analysis of Big Data
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