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31.
Ramos de Robles S. Lizette Garibay-Chávez Guadalupe Curiel-Ballesteros Arturo 《Cultural Studies of Science Education》2019,14(4):1011-1030
Cultural Studies of Science Education - This paper sets forth the idea that a critical aspect of the socialization process of Mexican communities is to maintain and carry-out traditional knowledge... 相似文献
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University students’ use of time is one of the most relevant inputs to their education process. The aim of this work is therefore to explore the effect that the time spent on different academic and non-academic activities (collected using a diary) has on student performance, in order to determine which of these activities improve students’ marks. Moreover, we investigate the role of quality variables such as study skills. Using a sample of undergraduate business students, we find that academic activities such as doing assignments in teams, attending university lectures and self study have significant positive effects on students’ marks. It is thus concluded that to improve academic performance it is not only the quantity of time that matters but also quality aspects like the ability to schedule. 相似文献
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Luis Ibarra Antonio Rosales Pedro Ponce Arturo Molina 《Journal of The Franklin Institute》2021,358(2):1422-1447
Conventional Sliding Mode Controllers (SMCs) exhibit a robust performance against matched bounded uncertainties and disturbances by containing them under a fixed controller’s effort. Consequently, the controller is commonly found excessive, leading to chattering and straining the actuator. As a solution, the variable-gain SMCs adapt to the instantaneous system requirements, thus attenuating the aforesaid effects and keeping the SMC’s benefits. However, the reported adaptive laws underlying such behavior commonly require arbitrary design considerations and do not consider practical implementation. Unlikely, in this work, a hysteresis-based adaptability law to drive the sliding variable to a boundary layer around zero is proposed. The sliding boundary—hysteresis’ width—will consistently “bounce” over the sliding variable, trying to shrink against it while preserving the sliding mode. This behavior finds its steady-state once the sliding variable and the sliding boundary’s dynamics are synchronized, with no need of subjective or arbitrary adjustments. The close-loop tuning can be derived from the system’s parameters alone, and its steady-state performance can be quantitatively predicted. Furthermore, a method to adjust the sliding surface parameters according to the system’s desired behavior is provided, all in a closed, analytical way. Finally, the physical actuator limits are taken into account and never exceeded, and the discrete nature of the devices normally used for SMC implementation is incorporated throughout. Two examples are studied to portray the proposal’s advantages. 相似文献
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Enrique Rodriguez-Borja Adela Pozo-Giraldez Macarena Díaz-Gimenez Ausias Hervas-Romero Africa Corchon-Peyrallo Inmaculada Vinyals-Bellido Arturo Carratala Calvo 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2021,31(2)
IntroductionAn appropriate management of anaemia laboratory tests is crucial for a correct diagnosis and treatment. A non-sequential “shotgun” approach (where every anaemia related test is ordered) causes workload and cost increases and could be potentially harmful. We have implemented a Decision Support System through our laboratory information system (LIMS) based on reflexive algorithms and automatic generation of interpretative reports specifically in diagnosis of anaemia for primary care patients.Materials and methodsWhen a request contained an “Anaemia Suspicion Study” profile, more than twenty automatic reflexive rules were activated in our LIMS based upon laboratory results. These rules normally involved the addition of reflexive tests. A final report was automatically generated for each interpretation which was always reviewed for their validity by two staff pathologists. We measured the impact of this system in the ordering of most common anaemia related tests and if a proper treatment was established based on the interpretive report.ResultsFrom all the studies performed, only 12% were positive being “iron deficiency” and “anaemia of chronic disease” the most frequent causes, 62% and 17%, respectively. Proper treatment was established in 88% of these anaemic patients. Total iron, transferrin, ferritin, folate and vitamin B12 demand decreased substantially after implementation representing a cost reduction of 40% only for these five tests.ConclusionsOur system has easily improved patient outcomes, advising on individual clinical cases. We have also noticeably reduced the number of over-requested tests and laboratory costs. 相似文献
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Okoye Kingsley Arrona-Palacios Arturo Camacho-Zuñiga Claudia Achem Joaquín Alejandro Guerra Escamilla Jose Hosseini Samira 《Education and Information Technologies》2022,27(3):3891-3933
Education and Information Technologies - Recent trends in educational technology have led to emergence of methods such as teaching analytics (TA) in understanding and management of the... 相似文献
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Daniel Tomsic María E. Pedreira Arturo Romano Gabriela Hermitte Héctor Maldonado 《Learning & behavior》1998,26(2):196-209
An opaque screen moving overhead elicits an escape response in the crabChasmagnathus that habituates for a long period after just a few presentations. A series of experiments was performed to determine whether the crab’s long-term habituation (LTH) is mediated by an association between contextual cues and the eliciting stimulus.Chasmagnathus failed to exhibit LTH when a visual cue in the experimental environment was changed between training and testing. In addition, long-term exposure to the context in the absence of the eliciting stimulus impaired LTH, both when the exposure preceded the habituation training (latent inhibition) and when the exposure came after the training (extinction). Long exposure to the context alone prior to training also produced a decrease in responsiveness to the eliciting stimulus, which confirmed previous results. However, both effects of long exposure were only manifested when the crabs spent a period of time between exposure and testing out of the experimental context. The results of this paper are interpreted as supporting the view thatChasmagnathus LTH can be understood largely by Wagner’s associative theory of habituation. 相似文献
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José-Reyes Ruiz-Gallardo Alonso Verde Arturo Valdés 《The Journal of environmental education》2013,44(4):252-270
The reengagement of disenchanted secondary students is one of the priorities of the educational system. Over a six-year period (2003–2004 to 2008–2009), 63 disruptive and low-performance secondary school students were integrated into a two-year garden-based learning program, which took place in southeastern Spain. This article intends to assess the quantitative and qualitative changes in both academic outcomes and personal behavior brought about by the experience. Results show that school failure decreased substantially, while the dropout rate was reduced from an initial 30% to zero in some years. Disruptive episode control improved significantly in the classroom, where teachers observed a decided improvement in students' skills, self-esteem, and self-confidence. 相似文献
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Audrey Figueroa Murphy Elizabeth Haller John Spiridakis 《Mentoring & Tutoring: Partnership in Learning》2019,27(3):295-316
This study focused on the perceptions of in-service general education teachers who completed a cohort mentoring program leading to certification in English as a Second Language (ESL) at a large, urban university. Based on interviews with 19 members of a cohort of 28, participants valued both the support and augmented skills-development the mentoring element afforded and the supportive, collaborative environment provided by the cohort model. Many also reported that the ESL-targeted strategies they learned were helpful in teaching all student populations and that program participation contributed to their increased involvement in leading professional development and, for some, to their intention to seek administrative roles. Based on these findings and the literature reviewed, the program examined may represent a model that can help to meet the demonstrated need for more trained ESL teachers in U.S. schools and can contribute to developing school leaders. 相似文献
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The burnout process may begin as early as the student-teaching experience [Gold, Y., 1985. Does teacher burnout begin with student teaching? Education, 105, 254–257]. Data from 49 student–teachers in the southwest United States were gathered twice during their student-teaching practicum. Data assessing teacher efficacy, teacher burnout, learning climate, and cooperating teacher support (guidance or imitation) were analyzed using correlational analyses, repeated measures MANOVA, a 2×2 repeated measures MANOVA, and stepwise regression. Results indicated significant increases in efficacy and decreases in burnout symptoms over time. We found significant interactions in the three factors of burnout by guidance group, such that student–teachers experiencing high guidance demonstrated lower levels of burnout at the end of their practicum. 相似文献