Search

When contextualizing educational methods, teachers can focus on constructivism to develop inquiry materials as STEAM subject matter for use in schools. However, there is little research concerning what STEAM teaching resources teachers view as inquiry with hands-on STEAM instructional material for use in kindergartens. Therefore, this research used a spiral developmental course design with action research to apply a teaching inquiry and hands-on STEAM model focusing on lesson development for kindergarten children via a one-year workshop. The lesson development process of this research included a total of six stages, allowing 24 participating teachers to analyse the STEAM elements from their original lesson plans, then make revisions according to a model, including: prediction, do/observation, quiz/discussion, and explanation/ transfer (PD/OQ/DE/T). After the initial lesson plan was completed, teaching experiments were conducted, and the lesson plan was adjusted through reflection and revisions based on the suggestions of domain experts during the implementation process. Finally, 48 PDOQDET inquiry and hands-on based STEAM lesson plans were developed. Thus, it is proposed that the inquiry and hands-on i-STEAM modules developed using the PDOQDET approach can represent exemplars illustrative of an enriched design constructivist paradigm to support students' i-STEAM learning in kindergartens.

STEM (science, technology, engineering, and mathematics) education is recognized as the world's top education program. However, few STEM programs have been designed based on cultural-historical events. To explore this issue, the present study drew on the cultural-historical activity theory and the content analysis method by adopting the descriptive-interpretative approach to explore the STEM content of the Dujiangyan Irrigation System (DIS) in present-day Sichuan, China. As early as 2,275 years ago during the Warring States period, Li Bing, the governor of Shu Shire in the Qin state, implicitly implemented the STEM concept when building the irrigation system. The results of this study indicate that the DIS incorporates Science (e.g., the hydraulic principle), Technology (e.g., making a large cobblestone Bamboo-Cage for building Fish Mouth), Engineering (e.g., water-level measurement) and Mathematics (e.g., Calculation of sand discharge). Adopting an educational pedagogy proposed by UNESCO which emphasized learning concepts from daily life, the present study draws on a cultural-historical event to inform STEM learning. The method and results of this study can be applied in the design of STEM programs based on other cultural-historical events from around the world.

Background: Surgical aortic valve replacement (SAVR) has been the standard treatment for symptomatic severe aortic stenosis, which is common among patients receiving long-term dialysis. The aim of this study was to report the long-term outcomes of SAVR in patients receiving chronic dialysis and to identify independent risk factors for early and late mortality. Methods: Every consecutive patient with SAVR with or without concomitant cardiac procedures in British Columbia between January 2000 and December 2015 was identified from the provincial cardiac registry. The Kaplan-Meier method was used to estimate survival. Univariate and multivariable models were conducted to determine independent risk factors for short-term mortality and reduced long-term survival. Results: Between 2000 and 2015, 654 patients receiving dialysis underwent SAVR with or without concomitant procedures. The mean follow-up was 2.3 (standard deviation 2.4) years (median 2.5 yr). The overall 30-day mortality was 12.8%. The 5-year and 10-year survival rates were 45.6% and 23.5%, respectively. Twelve patients (1.8%) had redo aortic valve surgery. There was no difference in 30-day mortality or long-term survival between 2 age groups (> 65 yr v. [less than or equal to] 65 yr). Anemia and cardiopulmonary bypass (CPB) were independent risk factors for both longer hospital stay and reduced long-term survival. The impact of CPB pump time on mortality occurred mainly within the first 30 days after surgery. When CPB pump time extended beyond 170 minutes, there was a significant increase in 30-day mortality with further prolongation of CPB pump time, and the relationship between 30-day mortality and CPB pump time became approximately linear. Conclusion: Patients receiving dialysis have poor long-term survival with a very low rate of redo aortic valve surgery following SAVR with or without concomitant procedures. Older age (> 65 yr) is not an independent risk factor for either 30-day mortality or reduced long-term survival. Using alternative strategies to limit CPB pump time is an important way to reduce 30-day mortality. Contexte : Le remplacement chirurgical de la valve aortique (RCVA) est depuis longtemps le traitement habituel de la sténose aortique symptomatique grave, fréquente chez les personnes sous dialyse à long terme. Le but de cette étude était de faire le point sur les résultats à longue échéance du RCVA chez les personnes dialysées à vie et de connaître les facteurs de risque indépendants de mortalité précoce et tardive. Méthodes : Tous les patients consécutifs ayant subi un RCVA, avec ou sans intervention cardiaque concomitante, en Colombie-Britannique entre janvier 2000 et décembre 2015 ont été recensés à partir d'un registre provincial des maladies cardiaques. Nous avons utilisé la méthode de Kaplan-Meier pour estimer la survie, et des modèles uni- et multivariés pour déterminer les facteurs de risque indépendants de mortalité à court terme et de réduction de la survie à long terme. Résultats : Entre 2000 et 2015, 654 personnes dialysées ont subi un RCVA avec ou sans intervention concomitante. La durée moyenne du suivi a été de 2,3 ans (écarttype 2,4) (durée médiane 2,5). Le taux de mortalité global à 30 jours a été de 12,8%. Les taux de survie moyens à 5 et à 10 ans ont été de 45,6% et de 23,5%, respectivement. Douze malades (1,8%) ont subi une réintervention pour leur valve aortique. On n'a observé aucune différence quant à la mortalité à 30 jours ou quant à la survie à long terme entre les 2 catégories d'âge (> 65 ans c. [less than or equal to] 65 ans). L'anémie et les pontages aorto-coronariens (PAC) ont été des facteurs de risque indépendants de prolongation du séjour hospitalier et de réduction de la survie à long terme. L'impact de la durée d'utilisation de la machine coeur-poumon pour le PAC sur la mortalité n'a été observé que durant les 30 premiers jours suivant la chirurgie. Lorsque la durée d'utilisation de la machine coeur-poumon dépassait 170 minutes, on notait une augmentation significative de la mortalité à 30 jours proportionnelle à cette durée et le lien entre la mortalité à 30 jours et le temps d'utilisation de la machine coeur-poumon pour le PAC est devenu à peu près linéaire. Conclusion : Les personnes dialysées ont une piètre survie à long terme et un très faible taux de réintervention pour leur valve aortique après un RCAV, avec ou sans intervention concomitante. L'âge avancé (> 65 ans) ne constitue pas un facteur de risque indépendant de mortalité à 30 jours ou de réduction de la survie à long terme. L'utilisation de stratégies de rechange visant à limiter la durée d'utilisation de la machine coeur-poumon pour le PAC est une façon importante de réduire la mortalité à 30 jours., Renal disease requiring dialysis is a global public health problem (1) affecting more than more than 38000 Canadians and more than 2 million people worldwide. (2,3) Its prevalence is increasing [...]

ObjectiveA dichroine poisoning outbreak caused by the accidental ingestion of fresh Dichroa yunnanensis was investigated and resolved， which can provide scientific support for the clinical treatment and further prevention of dichroine poisoning.MethodsA systemic epidemiological investigation， hygiene investigation， laboratory tests， morphology analysis， and molecular identification of the plant were conducted soon after the incident， and poison treatment consisted of evaluating clinical symptoms， giving therapeutic drugs， and achieving a patient cure.ResultsBased on the botanical and molecular biological identification results of Dichroa yunnanensis， the sample involved in the poisoning incident was confirmed to be Dichroa yunnanensis， Yunnan Province. The toxic substance responsible for the poisoning was an alkali from Dichroa yunnanensi， with a 100% effect rate among individuals who consumed it. Clinical manifestations included mainly nausea， vomiting， diarrhea， tenesmus， and other gastrointestinal symptoms， which abated within 24 h of fluid rehydration， stomach protection， potassium supplementation， and broad-spectrum detoxification treatment， without additional symptoms.ConclusionThis incident of dichroine poisoning was caused by the accidental consumption of fresh Dichroa yunnanensis. As no D. yunnanensis poisoning case has been reported previously in China， this report has important reference value for the prevention and clinical treatment of similar poisoning events in the future.

Integrated learning of STEM (science, technology, engineering, and mathematics) has become a challenge in the field of technical education. To understand the effect of STEM learning, in this study, we first identified the components of STEM in relation to bag design, then asked students to learn STEM knowledge as they designed bags. In this context, we explored how learners' creative self-efficacy (CSE) related to two types of epistemic curiosity (EC) (i.e., interest type and deprivation type) and reflected the STEM knowledge they acquired and their creative performance (i.e., novelty, utility, and aesthetics). The data were subjected to confirmatory factor analysis with structural equation modeling. The results revealed that CSE was positively related to two types of EC, and knowledge acquired was positively related to creative performance. The indirect correlates between CSE and knowledge acquired, EC and creative performance, and CSE and creative performance were positively mediated by other constructs. The implication of this research is that integrating STEM into the study of fashion design can improve students' creative performance.