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    Wyświetlanie 1-9 z 9
    Tytuł:
    The Impact of Working in a School Project on Students’ Behavior and Self-Perception
    Wpływ pracy w szkolnym projekcie na zachowanie studentów
    Autorzy:
    Abu-Ahmed, Laila
    Powiązania:
    https://bibliotekanauki.pl/articles/923289.pdf
    Data publikacji:
    2020-12-26
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    dropping out
    academic persistence
    self-efficacy
    hope for the future
    sense of control
    Opis:
    This article describes a school intervention program that was initiated and developed by a small team in one of the schools in the city of Nazareth, Israel. The proposed program is intended to promote academic perseverance and thereby reduce dropout rates, providing youth at risk with a variety of personal and interpersonal skills that are important both for studies and for labor world. The findings showed that combining learning with work in the candle factory promoted attendance and reduced violent behavior in school.
    Źródło:
    Studia Edukacyjne; 2018, 50; 463-486
    1233-6688
    Pojawia się w:
    Studia Edukacyjne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lateral Compression Sacral Fractures Have Less Favourable Outcome Compared to Crescent Fractures in Patients Less Than 50 Years Old
    Autorzy:
    Hammad, Abdullah Said
    Abu-Sheasha, Ghada Ahmed
    Nafady, Mahmoud
    El-Bakoury, Ahmed
    Powiązania:
    https://bibliotekanauki.pl/articles/28411971.pdf
    Data publikacji:
    2021-12-20
    Wydawca:
    Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
    Tematy:
    pelvic fractures
    surgery
    quality of life
    results
    Opis:
    Background. Lateral compression (LC) accounts for a wide spectrum of pelvic ring injuries (PRIs). The primary aim of this study was to assess the health-related quality of life outcomes of surgically fixed LC crescent versus sacral fractures in patients less than 50 years old after high energy trauma. Material and methods. We retrospectively reviewed the database for PRIs treated surgically from December 2011 to January 2019 at our tertiary level trauma centre. The EuroQoL-5D (EQ5D5L) questionnaire was electronically sent to all patients. Multiple linear regression was conducted to determine the predictors of quality-adjusted life-years (QALYs). Results. The study included 37 patients. The mean age was 26 SD 9.46 years. The mean duration of follow-up was 3.78 (r:1-9) years. Twenty-one (56.8%) and 16 (43.2%) patients sustained sacral fractures and crescent fractures, respectively. Multi-regression analysis showed that any patient with LC injury without a sacral fracture is expected to have a utility value of QALY= 0.876. A reduction of 0.072 units in QALYs is expected in the presence of sacral fracture. About 71% of patients with sacral fractures were able to return to work and this probability increased by 40% among patients with crescent fractures (RR=1.4, p=.015). Conclusions. 1. Younger patients with crescent fractures tend to have better quality of life (higher EQ5D and QALYs) compared to those with LC sacral fractures. 2. Moreover, patients with LC sacral fractures have less chance to return to their pre-injury level of work compared to those with crescent fractures.
    Źródło:
    Ortopedia Traumatologia Rehabilitacja; 2021, 23(6); 417-426
    1509-3492
    2084-4336
    Pojawia się w:
    Ortopedia Traumatologia Rehabilitacja
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fuzzy system modelling to assess water quality for irrigation purposes
    Autorzy:
    Hamdan, Ahmed Naseh Ahmed
    Al Saad, Zainb A. A.
    Abu-Alhail, Saad
    Powiązania:
    https://bibliotekanauki.pl/articles/1841962.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    Fuzzy Inference System
    irrigation water quality
    Richard diagram
    sodium adsorption ratio
    Opis:
    This study attempts to find a fuzzy logic system for assessing the quality of water in water treatment plants (WTPs) providing water for irrigation purposes in the Basrah Governorate (South of Iraq). Each month, samples are taken in each of six major WTPs to measure electrical conductivity (EC), and the content of sodium, magnesium and calcium. The calculated value which is the sodium adsorption ratio (SAR) is plotted with EC on the Richard diagram. SAR and EC values are combined together in a fuzzy inference system (FIS) to find out a quality number called the fuzzy irrigation water quality index number (FIWQI) which ranges from zero to one. The higher the value of the index, the better water quality. The Richard diagram, which helps to classify irrigation water, is used to adjust FIS components. Results show that the FIWQI for all WTPs changes depending on location and season. It ranges between 0.114–0.170, 0.120–0.190, 0.114–0.170, 0.114–0.202, 0.118–0.500 and 0.46–0.500 for Al-Bradhaia 1, Al-Jubaila 1, Shatt Al-Arab, Garmmah 1, Al-Rebat, and Old Shauaibah WTPs, respectively. The results indicate that WTPs effluent drawn from the Shatt Al-Arab River has poor water quality for irrigation purposes, except for an Old Shauaibah which receives water from another source called a sweet water canal. FIS results are compared with values obtained from the Richard diagram and 96% degree of compatibility between the two methods is attained. This indicates that FIS is an acceptable method for water quality classification.
    Źródło:
    Journal of Water and Land Development; 2021, 50; 98-107
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A modified robust confidence interval for the population mean of distribution based on deciles
    Autorzy:
    Abu-Shawiesh, Moustafa Omar Ahmed
    Sinsomboonthong, Juthaphorn
    Kibria, Bhuiyan Mohammad Golam
    Powiązania:
    https://bibliotekanauki.pl/articles/2034111.pdf
    Data publikacji:
    2022-03-15
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    robust confidence interval
    decile mean
    decile mean standard deviation
    decile mean standard error
    Monte Carlo simulation
    Opis:
    The confidence interval is an important statistical estimator of population location and dispersion parameters. The paper considers a robust modified confidence interval, which is an adjustment of the Student’s t confidence interval based on the decile mean and decile standard deviation for estimating the population mean of a skewed distribution. The efficiency of the proposed interval estimator is evaluated on the basis of an extensive Monte Carlo simulation study. The coverage ratio and average width of the proposed confidence interval are compared with certain existing and widely used confidence intervals. The simulation results show that, in general, the proposed interval estimator’s performance is highly effective. For illustrative purposes, three real-life data sets are analyzed, which, to a certain extent, support the findings obtained from the simulation study. Thus, we recommend that practitioners use the robust modified confidence interval for estimating the population mean when the data are generated by a normal or skewed distribution.
    Źródło:
    Statistics in Transition new series; 2022, 23, 1; 109-128
    1234-7655
    Pojawia się w:
    Statistics in Transition new series
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Partially Evacuated Solar Still System under Jordan Climate
    Autorzy:
    Qandil, Ahmed
    Alshaikh, Ibrahim Abu
    Aljabarin, Nader
    Rababa, Khalid S.
    Beithou, Nabil
    Powiązania:
    https://bibliotekanauki.pl/articles/123987.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    solar energy
    distillation development
    Jordan climate
    partial vacuum pressure
    Opis:
    The pressing need for reducing the global warming effects from the emission of greenhouse gases necessitates the use of renewable energy where possible. Solar distillers are devices with a promising future. In this work, an experimental setup (solar distiller) was constructed and equipped with a mirror, basin, glass cover, compressor, sensors and controllers to study the partial evacuation effects on different solar distillation parameters and the production capacity under the Jordanian climate. The test rig was tested for three different water levels (1, 2 and 3 cm), and four pressure values (1, 0.9, 0.8 and 0.7 atm) under the Jordanian climate. The detailed experimental results strongly correlate with the results previously published in literature. The modifications performed on the system doubled the previously attained efficiency. These improvements in the solar distiller will favor the application of the vacuum pressure principle in many different applications, such as the water extraction from the atmospheric air.
    Źródło:
    Journal of Ecological Engineering; 2020, 21, 3; 1-9
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental and Performance Analyses with Frequently Discrete Usage of the Hot Storage Tanks
    Autorzy:
    Qandil, Ahmed
    Al Rababa’a, Khalid
    Aljabarin, Nader
    Al Ganem, Zaid Abu
    Abdullah, Rasheed
    Powiązania:
    https://bibliotekanauki.pl/articles/123418.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    storage tank
    discrete usage
    stratification
    thermocline thickness
    mix number
    heat transfer
    usable energy
    Opis:
    Hot water storage tanks are devices with high energy consumption, used widely in residential, industrial and commercial sectors. The hot storage tank is a key device in numerous applications such as electrical heaters, solar thermal storage, solar electrical energy production and many others. Its superior technology is favorable for the designers and has a great impact on the market competition. Hot water storage tanks were studied under continuous usage feature, for different inlet types, flow rates, thermal stratification in static and dynamic modes, both experimentally and numerically. The real discrete usage feature has not been analyzed in a proper way. In this study, the experimental and performance analyses with frequent discrete usage of the hot storage tank were performed. Different flow rates of 3, 6, and 9 l/min with 5, 10 and 20 min discrete usage waiting periods were studied. It was found that the thermocline thickness and mixing number increases for both increasing the flow rate due the increment in turbulent mixing potential and increasing the waiting period due to the increase in heat transfer time available between the hot and cold layers. The real data was drawn as is to permit further analyses and data comparison to other researchers. The effect of waiting periods can be used in solar HST to maximize the efficiency of solar collectors as the solar collector efficiency is high at low temperatures.
    Źródło:
    Journal of Ecological Engineering; 2019, 20, 1; 52-60
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of ventilation to limit airborne infection concentration in an isolation room
    Autorzy:
    Kassem, Fatma A.-M.
    Abdelgawad, Ahmed Farouk
    Abu El-Ezz, A. E.
    Nassief, Mofreh M.
    Adel, Mohamed
    Powiązania:
    https://bibliotekanauki.pl/articles/24201035.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    COVID-19
    ventilation
    exhaled air
    air exchange
    test model
    hospital room
    CO2
    wentylacja
    powietrze wydychane
    sala szpitalna
    wymiana powietrza
    model badawczy
    Opis:
    Coronavirus (COVID-19) was detected at the end of 2019 and has since caused a worldwide pandemic. This virus is transferred airborne. In this study, an investigation was carried out of the ventilation strategies inside the isolation room based on exhaust air locations. To reduce the infection disease (COVID-19), due to the spreading of exhaled contaminants by humans in interior environments, five models for ventilation systems differing in the position of the outlet and inlet were used. This study aims to increase knowledge regarding the exhaled contaminant distribution under different environ-mental conditions (opening exhaust and negative pressure). The results showed a good agreement be-tween the computational results and the experimental data. Tracer gas CO2 was used to evaluate the air quality experimentally and computationally. The results showed that stable conditions are obtained inside the room at a negative pressure value above –1.5 Pa. The residence time of the infected airborne decreases when the pressure difference increases. The study revealed that the model with an air outlet opening installed behind the patient enabled avoiding the spread of infection in the room.
    Źródło:
    Environment Protection Engineering; 2023, 49, 2; 39--54
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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