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LSTM Prediction of Streamflow during Peak Rainfall of Piney River
Kola Yusuff Kareem,성연정,정영훈 한국방재안전학회 2021 한국방재안전학회 논문집 Vol.14 No.4
Streamflow prediction is a very vital disaster mitigation approach for effective flood management and water resources planning. Lately, torrential rainfall caused by climate change has been reported to have increased globally, thereby causing enormous infrastructural loss, properties and lives. This study evaluates the contribution of rainfall to streamflow prediction in normal and peak rainfall scenarios, typical of the recent flood at Piney Resort in Vernon, Hickman County, Tennessee, United States. Daily streamflow, water level, and rainfall data for 20 years (2000-2019) from two USGS gage stations (03602500 upstream and 03599500 downstream) of the Piney River watershed were obtained, preprocesssed and fitted with Long short term memory (LSTM) model. Tensorflow and Keras machine learning frameworks were used with Python to predict streamflow values with a sequence size of 14 days, to determine whether the model could have predicted the flooding event in August 21, 2021. Model skill analysis showed that LSTM model with full data (water level, streamflow and rainfall) performed better than the Naive Model except some rainfall models, indicating that only rainfall is insufficient for streamflow prediction. The final LSTM model recorded optimal NSE and RMSE values of 0.68 and 13.84 m3 /s and predicted peak flow with the lowest prediction error of 11.6%, indicating that the final model could have predicted the flood on August 24, 2021 given a peak rainfall scenario. Adequate knowledge of rainfall patterns will guide hydrologists and disaster prevention managers in designing efficient early warning systems and policies aimed at mitigating flood risks
Adebisi Yusuff Adebayo,Lucero-Prisno III Don Eliseo,Ogaya Jerico B.,Cañezo Victor C.,Niez Roland A.,Delos Santos Florante E.,Magramo Melchor M.,Yap-Tan Ann Rosanie,Sy Francis Ann R.,Kasimieh Omar 대한예방의학회 2024 예방의학회지 Vol.57 No.3
Objectives: This study explored the prevalence and predictors of alcohol and cannabis co-use among 9263 Filipino adolescents, using data from the 2019 Global School-based Student Health Survey (GSHS).Methods: We conducted a cross-sectional secondary analysis of the GSHS, targeting adolescents aged 13-17 years and excluding cases with incomplete data on alcohol and cannabis use. Our analysis employed the bivariate chi-square test of independence and multivariable logistic regression using Stata version 18 to identify significant predictors of co-use, with a p-value threshold set at 0.05.Results: The weighted prevalence of co-users was 4.2% (95% confidence interval [CI], 3.4 to 5.3). Significant predictors included male sex (adjusted odds ratio [aOR], 4.50; 95% CI, 3.31 to 6.10; p<0.001) and being in a lower academic year, specifically grade 7 (aOR, 4.08; 95% CI, 2.39 to 6.99; p<0.001) and grade 8 (aOR, 2.20; 95% CI, 1.30 to 3.72; p=0.003). Poor sleep quality was also a significant predictor (aOR, 1.77; 95% CI, 1.29 to 2.44; p<0.001), as was a history of attempted suicide (aOR, 5.31; 95% CI, 4.00 to 7.06; p<0.001). Physical inactivity was associated with lower odds of co-use (aOR, 0.45; 95% CI, 0.33 to 0.62; p<0.001). Additionally, non-attendance of physical education classes (aOR, 1.48; 95% CI, 1.06 to 2.05; p=0.021), infrequent unapproved parental checks (aOR, 1.37; 95% CI, 1.04 to 1.80; p=0.024), and lower parental awareness of free-time activities (aOR, 0.63; 95% CI, 0.45 to 0.87; p=0.005) were associated with higher odds of co-use. Factors not significantly linked to co-use included age group, being in grade 9, always feeling lonely, having no close friends, being bullied outside school, and whether a parent or guardian understood the adolescent’s worries.Conclusions: The findings highlight the critical need for comprehensive interventions in the Philippines, addressing not only physical inactivity and parental monitoring but also focusing on sex, academic grade, participation in physical education classes, sleep quality, and suicide attempt history, to effectively reduce alcohol and cannabis co-use among adolescents.
Dr. Nik Azmah NIK YUSUFF,Norazilawati ABDULLAH,Norhasnida Binti MD GHAZALI 한국직업자격학회 2017 한국직업자격학회 학술대회 Vol.2017 No.10
The fields of technical and vocational are fast becoming prime choices of the school leavers. Not only the fields are important industry-wise, they seem to be practical too as choice of related occupations. The challenge is to instil interest in students for these fields through relating technical and vocational with science, technology, engineering and mathematics (STEM) because they are intertwined with one another. The purpose of this study therefore was to develop a set of six STEM lesson plans with higher level questions inclusive. Two similar sets of pre and post-tests made up of higher level questions were developed as instruments to test the effectiveness of the lesson plans in increasing the achievement of elementary students in two schools and taught by two teachers. Quasi experimental design was used for this study involving 120 students from 4 classes. Half of them formed treatment groups and another half the control groups. The pre-test and post-test contained two sections, a and b which were objective and subjective sections consecutively. The data obtained were analysed using the Statistical Package for the Social Science (SPSS) and the findings were presented through frequency, mean, standard deviation and t-test. The results from the data collected showed the achievement of the treatment groups were significantly different from the control groups. And the means of the treatment groups had increased significantly compared to the control groups. Infusing science, technology, engineering and mathematics in lessons attracted the students to learn. Asking open and higher level questions to the students in schools are the foundation of training for the students to embark on technical work in the future or at least to come to understand how industries work.
Viet, Vu Quoc,Adeyemi, Salawu Yusuff,Son, Won Huyk,Rhyee, Jong-Soo,Lee, Nam-Suk,Kim, Heon-Jung American Chemical Society 2018 Crystal Growth & Design Vol.18 No.6
<P>This study examined the phase competition and critical thickness of ε-Fe<SUB>2</SUB>O<SUB>3</SUB> in epitaxial ε-Fe<SUB>2</SUB>O<SUB>3</SUB> thin films grown on a (100)-oriented yttrium-stabilized zirconia (YSZ) substrate using a pulsed laser deposition technique. The maximum critical thickness was found to be ∼20 nm for a single phase of ε-Fe<SUB>2</SUB>O<SUB>3</SUB> at the optimal laser spot size without impurities. Above this critical thickness, (00l)-oriented α-Fe<SUB>2</SUB>O<SUB>3</SUB> begins to appear along with ε-Fe<SUB>2</SUB>O<SUB>3</SUB>, eventually dominating in the thicker samples. These results suggest that the stability of ε-Fe<SUB>2</SUB>O<SUB>3</SUB> films are influenced by the appearance of a specific domain pattern, which becomes a favorable nucleation site for α-Fe<SUB>2</SUB>O<SUB>3</SUB>. The ε-Fe<SUB>2</SUB>O<SUB>3</SUB> films grown on the YSZ (100) substrate have a larger saturation moment than ε-Fe<SUB>2</SUB>O<SUB>3</SUB> grown on SrTiO<SUB>3</SUB> (111), and its coercive field approaches 1/4 of the maximum coercive field of ε-Fe<SUB>2</SUB>O<SUB>3</SUB> nanoparticles.</P><P>Plane view of ε-Fe<SUB>2</SUB>O<SUB>3</SUB> and α-Fe<SUB>2</SUB>O<SUB>3</SUB> unit cells on a YSZ (001) substrate oriented along the <I>c</I>-direction. Edge structure of two ε-Fe<SUB>2</SUB>O<SUB>3</SUB> domains sharing a horizontal line is a possible nucleation site for α-Fe<SUB>2</SUB>O<SUB>3</SUB>. Formation of this structure limits stable growth of ε-Fe<SUB>2</SUB>O<SUB>3</SUB> on the YSZ (001)</P> [FIG OMISSION]</BR>
Bamidele Victor Owoyele,Ahmed Olalekan Bakare,Olutayo Folajimi Olaseinde,Mohammed Jelil Ochu,Akorede Munirdeen Yusuff,Favour Ekebafe,Oluwadamilare Lanre Fogabi,Treister Roi 대한통증학회 2022 The Korean Journal of Pain Vol.35 No.3
Background: Inflammation is known to underlie the pathogenesis in neuropathic pain. This study investigated the anti-inflammatory and neuroprotective mechanisms involved in antinociceptive effects of co-administration of acetaminophen and L-carnosine in chronic constriction injury (CCI)-induced peripheral neuropathy in male Wistar rats. Methods: Fifty-six male Wistar rats were randomly divided into seven experimental groups (n = 8) treated with normal saline/acetaminophen/acetaminophen + L-carnosine. CCI was used to induce neuropathic pain in rats. Hyperalgesia and allodynia were assessed using hotplate and von Frey tests, respectively. Investigation of spinal proinflammatory cytokines and antioxidant system were carried out after twenty-one days of treatment. Results: The results showed that the co-administration of acetaminophen and Lcarnosine significantly (P < 0.001) increased the paw withdrawal threshold to thermal and mechanical stimuli in ligated rats compared to the ligated naïve group. There was a significant (P < 0.001) decrease in the levels of nuclear factor kappa light chain enhancer B cell inhibitor, calcium ion, interleukin-1-beta, and tumour necrotic factor-alpha in the spinal cord of the group coadministered with acetaminophen and L-carnosine compared to the ligated control group. Co-administration with acetaminophen and L-carnosine increased the antioxidant enzymatic activities and reduced the lipid peroxidation in the spinal cord. Conclusions: Co-administration of acetaminophen and L-carnosine has anti-inflammatory effects as a mechanism that mediate its antinociceptive effects in CCIinduced peripheral neuropathy in Wistar rat.