218 research outputs found

    Multidimensional Measures of Physical Activity and Their Association with Gross Motor Capacity in Children and Adolescents with Cerebral Palsy.

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    The current lack of adapted performance metrics leads clinicians to focus on what children with cerebral palsy (CP) do in a clinical setting, despite the ongoing debate on whether capacity (what they do at best) adequately reflects performance (what they do in daily life). Our aim was to measure these children's habitual physical activity (PA) and gross motor capacity and investigate their relationship. Using five synchronized inertial measurement units (IMU) and algorithms adapted to this population, we computed 22 PA states integrating the type (e.g., sitting, walking, etc.), duration, and intensity of PA. Their temporal sequence was visualized with a PA barcode from which information about pattern complexity and the time spent in each of the six simplified PA states (PAS; considering PA type and duration, but not intensity) was extracted and compared to capacity. Results of 25 children with CP showed no strong association between motor capacity and performance, but a certain level of motor capacity seems to be a prerequisite for the achievement of higher PAS. Our multidimensional performance measurement provides a new method of PA assessment in this population, with an easy-to-understand visual output (barcode) and objective data for clinical and scientific use

    Finding the Needle in a Haystack: Who are the Most Central Authors Within a Domain?

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    The speed at which new scientific papers are published has increased dramatically, while the process of tracking the most recent publications having a high impact has become more and more cumbersome. In order to support learners and researchers in retrieving relevant articles and identifying the most central researchers within a domain, we propose a novel 2-mode multilayered graph derived from Cohesion Network Analysis (CNA). The resulting extended CNA graph integrates both authors and papers, as well as three principal link types: coauthorship, co-citation, and semantic similarity among the contents of the papers. Our rankings do not rely on the number of published documents, but on their global impact based on links between authors, citations, and semantic relatedness to similar articles. As a preliminary validation, we have built a network based on the 2013 LAK dataset in order to reveal the most central authors within the emerging Learning Analytics domain.This study is part of the RAGE project. The RAGE project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 644187. This publication reflects only the author's view. The European Commission is not responsible for any use that may be made of the information it contains

    Walking Speed of Children and Adolescents With Cerebral Palsy: Laboratory Versus Daily Life.

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    The purpose of this pilot study was to compare walking speed, an important component of gait, in the laboratory and daily life, in young individuals with cerebral palsy (CP) and with typical development (TD), and to quantify to what extent gait observed in clinical settings compares to gait in real life. Fifteen children, adolescents and young adults with CP (6 GMFCS I, 2 GMFCS II, and 7 GMFCS III) and 14 with TD were included. They wore 4 synchronized inertial sensors on their shanks and thighs while walking at their spontaneous self-selected speed in the laboratory, and then during 2 week-days and 1 weekend day in their daily environment. Walking speed was computed from shank angular velocity signals using a validated algorithm. The median of the speed distributions in the laboratory and daily life were compared at the group and individual levels using Wilcoxon tests and Spearman's correlation coefficients. The corresponding percentile of daily life speed equivalent to the speed in the laboratory was computed and observed at the group level. Daily-life walking speed was significantly lower compared to the laboratory for the CP group (0.91 [0.58-1.23] m/s vs 1.07 [0.73-1.28] m/s, p = 0.015), but not for TD (1.29 [1.24-1.40] m/s vs 1.29 [1.20-1.40] m/s, p = 0.715). Median speeds correlated highly in CP (p < 0.001, rho = 0.89), but not in TD. In children with CP, 60% of the daily life walking activity was at a slower speed than in-laboratory (corresponding percentile = 60). On the contrary, almost 60% of the daily life activity of TD was at a faster speed than in-laboratory (corresponding percentile = 42.5). Nevertheless, highly heterogeneous behaviors were observed within both populations and within subgroups of GMFCS level. At the group level, children with CP tend to under-perform during natural walking as compared to walking in a clinical environment. The heterogeneous behaviors at the individual level indicate that real-life gait performance cannot be directly inferred from in-laboratory capacity. This emphasizes the importance of completing clinical gait analysis with data from daily life, to better understand the overall function of children with CP

    Coronal hole boundaries at small scales: III. EIS and SUMER views

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    We report on the plasma properties of small-scale transient events identified in the quiet Sun, coronal holes and their boundaries. We use spectroscopic co-observations from SUMER/SoHO and EIS/Hinode combined with high cadence imaging data from XRT/Hinode. We measure Doppler shifts using single and multiple Gauss fits of transition region and coronal lines as well as electron densities and temperatures. We combine co-temporal imaging and spectroscopy to separate brightening expansions from plasma flows. The transient brightening events in coronal holes and their boundaries were found to be very dynamical producing high density outflows at large speeds. Most of these events represent X-ray jets from pre-existing or newly emerging coronal bright points at X-ray temperatures. The average electron density of the jets is logNe ~ 8.76 cm^-3 while in the flaring site it is logNe ~ 9.51 cm^-3. The jet temperatures reach a maximum of 2.5 MK but in the majority of the cases the temperatures do not exceed 1.6 MK. The footpoints of jets have temperatures of a maximum of 2.5 MK though in a single event scanned a minute after the flaring the measured temperature was 12 MK. The jets are produced by multiple microflaring in the transition region and corona. Chromospheric emission was only detected in their footpoints and was only associated with downflows. The Doppler shift measurements in the quiet Sun transient brightenings confirmed that these events do not produce jet-like phenomena. The plasma flows in these phenomena remain trapped in closed loops.Comment: 16 pages, accepted for publication in A&

    CONSIDERATIONS CONCERNING THE VALORIZATION OF THE JUICE OBTAINED FROM SUGAR SORGHUM STALK FROM ALCOHOL

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     With a high production per hectare, sugar sorghum is a high value technical plant for farmers because from an average production of 70-80 t/ha, a high quantity of juice can be obtained, which can be used as such in the food industry (natural sweetener) or processed for the purpose of obtaining alcohol. The alcohol has a higher value/liter, can be stored more easily and its uses are multiple: in the food, pharmaceutical, chemical industry, etc

    Coronal jet contribution to the slow Solar wind flux: preliminary results

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    The solar wind is a continuous flux of charged particles that are ejected from the Sun's atmosphere. The sources of this flux have not been clearly identiffed yet. Coronal jets are proposed as a possible candidate. They are small collimated ejections of plasma seen in white-light coronagraph images. Using an existing catalogue, a sample of events during the period 2007-2008 was analysed, and ejected particle flux has been estimated. First results are now presented. As future work, all the jets contained in the catalogue will be analysed in order to obtain the average particle flux. The results will be compared to in-situ measurements in order to assess the coronal jet contribution to the solar wind

    THEORETICAL RESEARCHES ON THE FORCES AND STRESSES IN COUPLING DEVICES - REVIEW

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    This paper presents a synthesis of theoretical researches carried out in Romania and worldwide on forces and stresses in coupling devices.

    Вирусные гепатиты В, С и D в Республике Молдова: достижения и проблемы

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    Agenția Națională pentru Sănătate Publică, IP Universitatea de Stat de Medicină și Farmacie Nicolae Testemițanu, IMSP Centrul Republican de Diagnosticare MedicalăRealizarea primelor trei Programe Naționale de combatere a hepatitelor virale B, C și D în Republica Moldova, începând cu anul 1997, au condus la reducerea semnificativă a morbidității prin hepatitele virale B, C și D acute, dar pe fundalul incidenței sporite a hepatitelor virale cronice, unde indicatorii îi depășesc vădit pe cei din țările Comunității Europene. Studiile realizate demonstrează că contingentele de populație cu risc sporit de infectare continuă să prezinte un potențial înalt ca sursă reală de infectare cu virusurile hepatice nominalizate pentru alte categorii de populație. Ca urmare a utilizării tehnicilor de biologie moleculară, au fost evidențiate genotipurile și subgenotipurile virusurilor hepatitelor B, C și D în special la contingentele de populație cu risc sporit de infectare, demonstrând că unele posedă un potențial înalt de cronicizare, cu evoluție spre ciroză și cancer hepatocelular. Utilizarea produselor antivirale de ultimă generație recomandate de OMS pentru tratamentul hepatitelor virale B și C a demonstrat o eficacitate înaltă nu numai terapeutică, ci și profi lactică, manifestată prin reducerea numărului de bolnavi purtători de virusuri și a noilor focare. Este important de menționat că prejudiciul economic prevenit ca urmare a realizării Programelor Naționale de combatere a hepatitelor virale în perioada 1997-2015 a constituit 822.453 mii lei, pe când cheltuielile din bugetul de stat pentru realizarea acestor programe au alcătuit 84.618,5 mii lei. Realizarea integrală a prezentului Program de combatere a hepatitelor virale B, C și D în contextul Planului Strategic al OMS de eliminare a hepatitelor virale parenterale până în anul 2030 va avea un beneficiu socioeconomic extrem de important pentru Republica Moldova.The implementation of the first three National Programs against viral hepatitis B, C and D in the Republic of Moldova since 1997 has allowed to significantly reduce morbidity of acute viral hepatitis B, C and D, but on the increased background of incidence of chronic viral hepatitis the indicators clearly outweigh those in the European Community. Studies have shown that the contingent of population at high risk of infection continues to show a high potential as a real source of infection with viral hepatitis viruses for other population categories. As a result of the use of molecular biology techniques, the genotypes and subgenotypes of hepatitis B, C and D viruses have been highlighted, particularly in contingent of population at high risk of infection, demonstrating that some have a high potential for chronicization with progression to cirrhosis and hepatocellular cancer. Using of next-generation antiviral drugs in the treatment of viral hepatitis B and C recommended by the WHO has shown a high, not only therapeutic but also prophylactic efficacy manifested by reducing the number of virus-bearing patients, and new outbreaks. It is important to note that the economic prejudice prevented by the implementation of the National Programs against viral hepatitis during the period 1997-2015 amounted to 822.453 thousand lei, while the spending from the State Budget for the implementation of the nominated programs amounted to 84.618.5 thousand lei. The full implementation of the current Program for combating viral hepatitis B, C and D in the context of the WHO Strategic Plan for the elimination of parenteral viral hepatitis by 2030 will have a very important socio-economic benefit for the Republic of Moldova.Реализация первых трех Национальных программ по борьбе с вирусными гепатитами B, C и D в Республике Молдова с 1997 года позволила значительно снизить заболеваемость острыми вирусными гепатитами B, C и D, но на фоне высокого уровня заболеваемости хроническими вирусными гепатитами, показатели явно перевешивают показатели стран Европейского Cоюза. Исследования показали, что среди групп населения с высоким риском инфицирования все еще присутствует высокий потенциал в качестве реального источника заражения вирусами гепатитов для других категорий населения. В результате использования методов молекулярной биологии были выделены генотипы и субгенотипы вирусов гепатитов B, C и D, особенно среди групп с высоким риском инфицирования, демонстрируя, что некоторые имеют высокий потенциал к хронизации и прогрессированию к циррозу и гепатоцеллюлярного рака. Использование противовирусных препаратов последнего поколения для лечения вирусных гепатитов В, C и D, рекомендованных ВОЗ, продемонстрировало не только высокую терапевтическую, но и профилактическую эффективность за счет сокращения числа вирусоносителей и новых очагов инфекции. Важно отметить, что предотвращённый экономический ущерб в результате реализации Национальных программ по борьбе с вирусными гепатитами в период 1997–2015 годов составил 822.453 тысяч леев, а расходы государственного бюд-жета на реализацию указанных программ составили 84.618,5 тысяч леев. Полная реализация текущей Программы по борьбе с вирусными гепатитами B, C и D в контексте Стратегического плана ВОЗ по элиминации парентеральных вирусных гепатитов к 2030 году будет иметь важное социально-экономическое значение для Республики Молдова
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