A new hybrid equilibrium optimized SysFor based geospatial data mining for tropical storm-induced flash flood susceptible mapping.

Flash flood is one of the most dangerous hydrologic and natural phenomena and is considered as the top ranking of such events among various natural disasters due to their fast onset characteristics and the proportion of individual fatalities. Mapping the probability of flash flood events remains challenges because of its complexity and rapid onset of precipitation. Thus, this study aims to propose a state-of-the-art data mining approach based on a hybrid equilibrium optimized SysFor, namely, the HE-SysFor model, for spatial prediction of flash floods. A tropical storm region located in the Northwest areas of Vietnam is selected as a case study. For this purpose, 1866 flash-flooded locations and ten indicators were used. The results show that the proposed HE-SysFor model yielded the highest predictive performance (total accuracy = 93.8%, Kappa index = 0.875, F1-score = 0.939, and AUC = 0.975) and produced the better performance than those of the C4.5 decision tree (C4.5), the radial basis function-based support vector machine (SVM-RBF), the logistic regression (LReg), and deep learning neural network (DeepLNN) models in both the training and the testing phases. Among the ten indicators, elevation, slope, and land cover are the most important. It is concluded that the proposed model provides an alternative tool and may help for effectively monitoring flash floods in tropical areas and robust policies for decision making in mitigating the flash flood impacts.

Dataset of Vietnamese teachers' perspectives and perceived support during the COVID-19 pandemic.

The COVID-19 pandemic has caused unprecedented damage to the educational system worldwide. Besides the measurable economic impacts in the short-term and long-term, there is intangible destruction within educational institutions. In particular, teachers - the most critical intellectual resources of any schools - have to face various types of financial, physical, and mental struggles due to COVID-19. To capture the current context of more than one million Vietnamese teachers during COVID-19, we distributed an e-survey to more than 2,500 randomly selected teachers from two major teacher communities on Facebook from 6th to 11th April 2020. From over 373 responses, we excluded the observations which violated our cross-check questions and retained 294 observations for further analysis. This dataset includes: (i) Demographics of participants; (ii) Teachers' perspectives regarding the operation of teaching activities during the pandemic; (iii) Teachers' received support from their schools, government bodies, other stakeholders such as teacher unions, and parents' associations; and (iv) teachers' evaluation of school readiness toward digital transformation. Further, the dataset was supplemented with an additional question on the teachers' primary source of professional development activities during the pandemic.

Percentage Body Fat is As a Good Indicator for Determining Adolescents Who Are Overweight or Obese: A Cross-Sectional Study in Vietnam

OBJECTIVES: To identify trends in percentage body fat (PBF) in adolescents to determine gender-specific classification thresholds for being overweight and obese. METHODS: A cross-sectional study of 899 adolescents (11 to 14.5 years) from Hanoi and Nam Dinh was conducted in Vietnam. PBF, subcutaneous fat and percentage of lean mass were measured directly using OMRON HBF 375 scales to measure bioelectrical impedance. RESULTS: PBF decreased in boys with increasing age (p < 0.001). The difference in PBF between boys and girls, significantly increased with age after 12.5 years (p < 0.001). There was a stronger correlation between PBF and fat content (Pearson's r = 0.860, p < 0.0001) than that between (BMI) and fat content (Pearson's r = 0.521, p < 0.0001). The prevalence of being overweight or obese in girls was similar when determined by PBF or BMI. Hanoi had higher rates of adolescents being overweight or obese compared with Nam Dinh. CONCLUSION: PBF provides a more accurate body assessment for being overweight or obese in adolescents compared with BMI.

A Bi-national Analysis of 252 Pancreatic Resections for Chronic Pancreatitis with Regard to Incidental Carcinoma Sequence and Overall Postoperative Outcome.

BACKGROUND/AIM: Numerous treatment algorithms for patients with chronic pancreatitis are still debated. In particular, surgical therapy is often only considered after long-term conservative treatment. The aim of this study was the bi-national analysis of patients who underwent pancreatic resection for suspected chronic pancreatitis at an Austrian and a German high-volume center with regard to overall postoperative outcome and incidental carcinoma sequence. PATIENTS AND METHODS: Overall, 252 consecutive pancreatic resections for suspected chronic pancreatitis were performed at the two institutions between 2005 and 2015. In a bi-national retrospective analysis, postoperative results as well as histopathological findings were analyzed. RESULTS: Pancreatic resections were performed in 193 male (76.6%) and 59 female patients (23.4%), with a median age of 53.2 years. A total of 175 resections of the pancreatic head (69.4%), 37 distal pancreatectomies (14.7%), 23 total pancreatectomies (9.1%) and 18 other pancreatic resections (7.1%) were performed within our study period. Postoperative complications Clavien-Dindo grade II or greater occurred in 94 patients (37.3%). Twenty-one patients (8.3%) developed clinically relevant postoperative pancreatic fistula (grade B and C), while postoperative mortality occurred in four patients (1.6%). Final histological examination of the operative specimen revealed incidental pancreatic adenocarcinoma in 18 out of the 252 patients (7.1%). CONCLUSION: The results of our study demonstrate that pancreatic resections for chronic pancreatitis may nowadays be considered technically feasible and safe. The high incidence of incidental pancreatic adenocarcinoma especially underlines the necessity for an early surgical therapeutic approach for these patients.