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1.
With the improvement of people's living standards, gastrointestinal adverse reactions caused by various adverse factors have attracted more and more people's attention. A recent study has indicated that coronavirus disease 2019(COVID-19) could also invade the gastrointestinal tract, leading to gastrointestinal adverse reactions(Song et al., 2020). In recent years, immunotherapy has provided certain effects for some patients with advanced malignant tumors.  相似文献   

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Testing within the science classroom is commonly used for both formative and summative assessment purposes to let the student and the instructor gauge progress toward learning goals. Research within cognitive science suggests, however, that testing can also be a learning event. We present summaries of studies that suggest that repeated retrieval can enhance long-term learning in a laboratory setting; various testing formats can promote learning; feedback enhances the benefits of testing; testing can potentiate further study; and benefits of testing are not limited to rote memory. Most of these studies were performed in a laboratory environment, so we also present summaries of experiments suggesting that the benefits of testing can extend to the classroom. Finally, we suggest opportunities that these observations raise for the classroom and for further research.Almost all science classes incorporate testing. Tests are most commonly used as summative assessment tools meant to gauge whether students have achieved the learning objectives of the course. They are sometimes also used as formative assessment tools—often in the form of low-stakes weekly or daily quizzes—to give students and faculty members a sense of students’ progression toward those learning objectives. Occasionally, tests are also used as diagnostic tools, to determine students’ preexisting conceptions or skills relevant to an upcoming subject. Rarely, however, do we think of tests as learning tools. We may acknowledge that testing promotes student learning, but we often attribute this effect to the studying students do to prepare for the test. And yet, one of the most consistent findings in cognitive psychology is that testing leads to increased retention more than studying alone does (Roediger and Butler, 2011 ; Roediger and Pyc, 2012 ). This effect can be enhanced when students receive feedback for failed tests and can be observed for both short-term and long-term retention. There is some evidence that testing not only improves student memory of the tested information but also ability to remember related information. Finally, testing appears to potentiate further study, allowing students to gain more from study periods that follow a test. Given the potential power of testing as a tool to promote learning, we should consider how to incorporate tests into our courses not only to gauge students’ learning, but also to promote that learning (Klionsky, 2008 ).We provide six observations about the effects of testing from the cognitive psychology literature, summarizing key studies that led to these conclusions (see
StudyResearch question(s)ConclusionLength of delay before final testStudy participants
Repeated retrieval enhances long-term retention in a laboratory setting
“Test-enhanced learning: taking memory tests improves long-term retention” (Roediger and Karpicke, 2006a) Is a testing effect observed in educationally relevant conditions? Is the benefit of testing greater than the benefit of restudy? Do multiple tests produce a greater effect than a single test?Testing improved retention significantly more than restudy in delayed tests. Multiple tests provided greater benefit than a single test.Experiment 1: 2 d; 1 wk Experiment 2: 1 wkUndergraduates ages 18–24, Washington University
“Retrieval practice with short-answer, multiple-choice, and hybrid tests” (Smith and Karpicke, 2014) What effect does the type of question presented in retrieval practice have on long-term retention?Retrieval practice with multiple-choice, free-response, and hybrid formats improved students’ performance on a final, delayed test taken 1 wk later when compared with a no-retrieval control. The effect was observed for both questions that required only recall and those that required inference. Hybrid questions provided an advantage when the final test had a short-answer format.1 wkUndergraduates, Purdue University
“Retrieval practice produces more learning that elaborative studying with concept mapping” (Karpicke and Blunt, 2011) What is the effect of retrieval practice on learning relative to elaborative study using a concept map?Students in the retrieval-practice condition had greater gains in meaningful learning compared with those who used elaborative concept mapping as a learning tool.1 wkUndergraduates
Various testing formats can enhance learning
“Retrieval practice with short-answer, multiple-choice, and hybrid tests” (Smith and Karpicke, 2014) See above.See above.See above.See above.
“Test format and corrective feedback modify the effect of testing on long-term retention” (Kang et al., 2007) What effect does the type of question used for retrieval practice have on retention? Does feedback have an effect on retention for different types of questions?When no feedback was given, the difference in long-term retention between short-answer and multiple-choice questions was insignificant. When feedback was provided, short-answer questions were slightly more beneficial.3 dUndergraduates, Washington University psychology subjects’ pool
“The persisting benefits of using multiple-choice tests as learning events” (Little and Bjork, 2012) What effect does question format have on retention of information previously tested and related information not included in retrieval practice?Both cued-recall and multiple-choice questions improved recall compared with the no-test control. However, multiple-choice questions improved recall more than cued-recall questions for information not included in the retrieval practice, both after a 5-min and a 48-h delay.48 hUndergraduates, University of California, Los Angeles
Feedback enhances benefits of testing
“Feedback enhances positive effects and reduces the negative effects of multiple-choice testing” (Butler and Roediger, 2008) What effect does feedback on multiple-choice tests have on long-term retention of information?Feedback improved retention on a final cued-recall test. Delayed feedback resulted in better final performance than immediate feedback, though both showed benefits compared with no feedback. The final test occurred 1 wk after the initial test.1 wkUndergraduate psychology students, Washington University
“Correcting a metacognitive error: feedback increases retention of low-confidence responses” (Butler et al., 2008) What role does feedback play in retrieval practice? Can it correct metacognitive errors as well as memory errors?Both initially correct and incorrect answers were benefited by feedback, but low-confidence answers were most benefited by feedback.5 minUndergraduate psychology students, Washington University
Learning is not limited to rote memory
“Retrieval practice produces more learning than elaborative study with concept mapping” (Karpicke and Blunt, 2011) What is the effect of retrieval practice on learning relative to elaborative study using a concept map? Does retrieval practice improve students’ ability to perform higher-order cognitive activities (i.e., building a concept map) as well as simple recall tasks?Compared with elaborative study using concept mapping, retrieval practice improved students’ performance both on final tests that required short answers and final tests that required concept map production. See also earlier entry for this study.1 wkUndergraduates
“Retrieval practice with short-answer, multiple-choice, and hybrid tests” (Smith and Karpicke, 2014) See above.See above.See above.See above.
“Repeated testing produces superior transfer of learning relative to repeated studying” (Butler, 2010) Does test-enhanced learning promote transfer of facts and concepts from one domain to another?Testing improved retention and increased transfer of information from one domain to another through test questions that required factual or conceptual recall and inferential questions that required transfer.1 wkUndergraduate psychology students, Washington University
Testing potentiates further study
“Pretesting with multiple-choice questions facilitates learning” (Little and Bjork, 2011) Does pretesting using multiple-choice questions improve performance on a later test? Is an effect observed only for pretested information or also for related, previously untested information?A multiple-choice pretest improved performance on a final test, both for information that was included on the pretest and related information.1 wkUndergraduates, University of California, Los Angeles
“The interim test effect: testing prior material can facilitate the learning of new material” (Wissman et al., 2011) Does an interim test over previously learned material improve retention of subsequently learned material?Interim testing improves recall on a final test for information taught before and after the interim test.No delayUndergraduates, Kent State University
The benefits of testing appear to extend to the classroom
“The exam-a-day procedure improves performance in psychology classes” (Leeming, 2002) What effect does a daily exam have on retention at the end of the semester?Students who took a daily exam in an undergraduate psychology class scored higher on a retention test at the end of the course and had higher average grades than students who only took unit tests.One semesterUndergraduates enrolled in Summer term of Introductory Psychology, University of Memphis
“Repeated testing improves long-term retention relative to repeated study: a randomized controlled trial” (Larsen et al., 2009) Does repeated testing improve long-term retention in a real learning environment?In a study with medical residents, repeated testing with feedback improved retention more than repeated study for a final recall test 6 mo later.6 moResidents from Pediatrics and Emergency Medicine programs, Washington University
“Retrieving essential material at the end of lectures improves performance on statistics exams” (Lyle and Crawford, 2011) What effect does daily recall practice using the PUREMEM method have on course exam scores?In an undergraduate psychology course, students using the PUREMEM method had higher exams scores than students taught with traditional lectures, assessed by four noncumulative exams spaced evenly throughout the semester.∼3.5 wkUndergraduates enrolled in either of two consecutive years of Statistics for Psychology, University of Louisville
“Using quizzes to enhance summative-assessment performance in a web-based class: an experimental study” (McDaniel et al., 2012) What effects do online testing resources have on retention of information in an online undergraduate neuroscience course?Both multiple-choice and short-answer quiz questions improved retention and improved scores on the final exam for questions identical to those on the weekly quizzes and those that were related but not identical.15 wkUndergraduates enrolled in Web-based brain and behavior course
“Increasing student success using online quizzing in introductory (majors) biology” (Orr and Foster, 2013) What effect do required pre-exam quizzes have on final exam scores for students in an introductory (major) biology course?Students were required to complete 10 pre-exam quizzes throughout the semester. The scores of students who completed all of the quizzes or none of the quizzes were compared. Students of all abilities who completed all of the pre-exam quizzes had higher average exam scores than those who completed none.One semesterCommunity college students enrolled in an introductory biology course for majors
“Teaching students how to study: a workshop on information processing and self-testing helps students learn” (Stanger-Hall et al., 2011) What effect does a self-testing exercise done in a workshop have on final exam questions covering the same topic used in the workshop?Students who participated in the retrieval-practice workshop performed better on the exam questions related to the material covered in the workshop activity. However, there was no difference in overall performance on the exam between the two groups.10 wkUndergraduate students in a introductory biology class
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4.
Re: Misconceptions Are “So Yesterday!”     
Gregory J. Crowther  Rebecca M. Price 《CBE life sciences education》2014,13(1):3-5
A response to Maskiewicz and Lineback''s essay in the September 2013 issue of CBE-Life Sciences Education.Dear Editor:Maskiewicz and Lineback (2013) have written a provocative essay about how the term misconceptions is used in biology education and the learning sciences in general. Their historical perspective highlights the logic and utility of the constructivist theory of learning. They emphasize that students’ preliminary ideas are resources to be built upon, not errors to be eradicated. Furthermore, Maskiewicz and Lineback argue that the term misconception has been largely abandoned by educational researchers, because it is not consistent with constructivist theory. Instead, they conclude, members of the biology education community should speak of preconceptions, naïve conceptions, commonsense conceptions, or alternative conceptions.We respectfully disagree. Our objections encompass both the semantics of the term misconception and the more general issue of constructivist theory and practice. We now address each of these in turn. (For additional discussion, please see Leonard, Andrews, and Kalinowski , “Misconceptions Yesterday, Today, and Tomorrow,” CBE—Life Sciences Education [LSE], in press, 2014.)Is misconception suitable for use in scholarly discussions? The answer depends partly on the intended audience. We avoid using the term misconception with students, because it could be perceived as pejorative. However, connotations of disapproval are less of a concern for the primary audience of LSE and similar journals, that is, learning scientists, discipline-based education researchers, and classroom teachers.An additional consideration is whether misconception is still used in learning sciences outside biology education. Maskiewicz and Lineback claim that misconception is rarely used in journals such as Cognition and Instruction, Journal of the Learning Sciences, Journal of Research in Science Teaching, and Science Education, yet the term appears in about a quarter of the articles published by these journals in 2013 (National Research Council, 2012 ).

Table 1.

Use of the term misconception in selected education research journals in 2013
Journal (total articles published in 2013a)Articles using misconception (“nondisapproving” articles/total articles)Articles using other terms
LSE (59)23/24Alternative conception (4)
Commonsense conception (2)
Naïve conception (1)
Preconception (4)
Cognition and Instruction (16)3/3None
Journal of the Learning Sciences (17)4/4Commonsense science knowledge (1)
Naïve conception (1)
Prior conception (1)
Journal of Research in Science Teaching (49)11/13Commonsense idea (1)
Naïve conception (1)
Preconception (5)
Science Education (36)10/11Naïve conception (1)
Open in a separate windowaAs of November 25, 2013. Does not include very short editorials, commentaries, corrections, or prepublication online versions.A final consideration is whether any of the possible alternatives to misconception are preferable. We feel that the alternatives suggested by Maskiewicz and Lineback are problematic in their own ways. For example, naïve conception sounds more strongly pejorative to us than misconception. Naïve conception and preconception also imply that conceptual challenges occur only at the very beginning stages of learning, even though multiple rounds of conceptual revisions are sometimes necessary (e.g., see figure 1 of Andrews et al., 2012 ) as students move through learning progressions. Moreover, the terms preferred by Maskiewicz and Lineback are used infrequently (Smith et al. (1993) that they object to statements that misconceptions should be actively confronted, challenged, overcome, corrected, and/or replaced (Smith et al. (1993) argue on theoretical grounds that confrontation does not allow refinement of students’ pre-existing, imperfect ideas; instead, the students must simply choose among discrete prepackaged ideas. From Maskiewicz and Lineback''s perspective, the papers listed in Maskiewicz and Lineback (2013) as using outdated views of misconceptionsa
ArticleExample of constructivist languageExample of language suggesting confrontation
Andrews et al., 2011 “Constructivist theory argues that individuals construct new understanding based on what they already know and believe.… We can expect students to retain serious misconceptions if instruction is not specifically designed to elicit and address the prior knowledge students bring to class” (p. 400).Instructors were scored for “explaining to students why misconceptions were incorrect” and “making a substantial effort toward correcting misconceptions” (p. 399). “Misconceptions must be confronted before students can learn natural selection” (p. 399). “Instructors need to elicit misconceptions, create situations that challenge misconceptions.” (p. 403).
Baumler et al., 2012 “The last pair [of students]''s response invoked introns, an informative answer, in that it revealed a misconception grounded in a basic understanding of the Central Dogma” (p. 89; acknowledges students’ useful prior knowledge).No relevant text found
Cox-Paulson et al., 2012 No relevant text foundThis paper barely mentions misconceptions, but cites sources (Phillips et al., 2008 ; Robertson and Phillips, 2008 ) that refer to “exposing,” “uncovering,” and “correcting” misconceptions.
Crowther, 2012 “Prewritten songs may explain concepts in new ways that clash with students’ mental models and force revision of those models” (p. 28; emphasis added).“Songs can be particularly useful for countering … conceptual misunderstandings.… Prewritten songs may explain concepts in new ways that clash with students’ mental models and force revision of those models” (p. 28).
Kalinowski et al., 2010 “Several different instructional approaches for helping students to change misconceptions … agree that instructors must take students’ prior knowledge into account and help students integrate new knowledge with their existing knowledge” (p. 88).“One strategy for correcting misconceptions is to challenge them directly by ‘creating cognitive conflict,’ presenting students with new ideas that conflict with their pre-existing ideas about a phenomenon… In addition, study of multiple examples increases the chance of students identifying and overcoming persistent misconceptions” (p. 89).
Open in a separate windowaWhile these papers do not adhere to Smith et al.''s (1993) version of constructivism, they do adhere to the constructivist approach that advocates cognitive dissonance.Our own stance differs from that of Maskiewicz and Lineback, reflecting a lack of consensus within constructivist theory. We agree with those who argue that, not only are confrontations compatible with constructivist learning, they are a central part of it (e.g., Gilbert and Watts, 1983 ; Hammer, 1996 ). We note that Baviskar et al. (2009) list “creating cognitive dissonance” as one of the four main tenets of constructivist teaching. Their work is consistent with research showing that focusing students on conflicting ideas improves understanding more than approaches that do not highlight conflicts (e.g., Kowalski and Taylor, 2009 ; Gadgil et al., 2012 ). Similarly, the Discipline-Based Education Research report (National Research Council, 2012 , p. 70) advocates “bridging analogies,” a form of confrontation, to guide students toward more accurate ways of thinking. Therefore, we do not share Maskiewicz and Lineback''s concerns about the papers listed in Price, 2012 ). We embrace collegial disagreement.Maskiewicz and Lineback imply that labeling students’ ideas as misconceptions essentially classifies these ideas as either right or wrong, with no intermediate stages for constructivist refinement. In fact, a primary goal of creating concept inventories, which use the term misconception profusely (e.g., Morris et al., 2012 ; Prince et al., 2012 ), is to demonstrate that learning is a complex composite of scientifically valid and invalid ideas (e.g., Andrews et al., 2012 ). A researcher or instructor who uses the word misconceptions can agree wholeheartedly with Maskiewicz and Lineback''s point that misconceptions can be a good starting point from which to develop expertise.As we have seen, misconception is itself fraught with misconceptions. The term now embodies the evolution of our understanding of how people learn. We support the continued use of the term, agreeing with Maskiewicz and Lineback that authors should define it carefully. For example, in our own work, we define misconceptions as inaccurate ideas that can predate or emerge from instruction (e.g., Andrews et al., 2012 ). We encourage instructors to view misconceptions as opportunities for cognitive dissonance that students encounter as they progress in their learning.  相似文献   

5.
Problem- and Case-Based Learning in Science: An Introduction to Distinctions,Values, and Outcomes     
Douglas Allchin 《CBE life sciences education》2013,12(3):364-372
Case-based learning and problem-based learning have demonstrated great promise in reforming science education. Yet an instructor, in newly considering this suite of interrelated pedagogical strategies, faces a number of important instructional choices. Different features and their related values and learning outcomes are profiled here, including: the level of student autonomy; instructional focus on content, skills development, or nature-of-science understanding; the role of history, or known outcomes; scope, clarity, and authenticity of problems provided to students; extent of collaboration; complexity, in terms of number of interpretive perspectives; and, perhaps most importantly, the role of applying versus generating knowledge.
A leader who gives trust earns trust.His profile is low, his words measured.His work done well, all proclaim,“Look what we’ve accomplished!”—Lao Tsu, Tao Te Ching
Problem-based learning (PBL) and case-based learning (CBL) are at least as old as apprenticeship among craftsmen. One can envision the student of metals at the smelting furnace, the student of herbal remedies at the plant collector''s side, or the student of navigation beside the helm. In recent years, however, PBL and CBL have emerged as powerful teaching tools in reforming science education. Most notably, these approaches exhibit key features advocated by educational researchers. First, both are fundamentally student-centered, acknowledging the importance of actively engaging students in their own learning. As the responsibility for learning shifts toward students, the role of the instructor also shifts, from the conventional authority who dispenses final-form knowledge to an expert guide, who motivates and facilitates the process of learning, while promoting the individual development of learning skills. The efforts of an ideal teacher may well be hidden. As Lao Tsu suggested centuries ago, educational achievement is measured by what a learner learns more than by what the teacher teaches.Second, in orienting more toward student perspectives and motivations, CBL and PBL tend to focus on concrete, specific occasions—cases or problems—wherein the target knowledge is relevant. Contextualizing the learning contributes both to student motivation and to the making of meaning (construed by many educators as central to functional memory and effective learning). The cases and problems are not merely supplemental illustrations or peripheral sidebars, but function centrally as the very occasion for learning. This style of learning resonates with views of cognitive scientists that our minds reason effectively through analogy and models, as much as through the interpretation and application of general, abstract principles.A third feature, and perhaps the most transformative, is the potential of PBL and CBL to contribute to the development of thinking skills and an understanding of the nature of science, beyond the conventional conceptual content. As students work on cases or problems, they typically exercise and hone skills in research, analysis, interpretation, and creative thinking. In addition to benefiting from practice, students may also reflect explicitly on their experience and thereby deepen their understanding of scientific practices. But such lessons do not emerge automatically. The instructor must make deliberate choices and design activities mindfully to support this aim.In these three ways, PBL and CBL have proven valuable in many settings and hold promise more widely. An instructor first venturing into the realm of CBL and PBL, however, may easily be overwhelmed by the variety of approaches and the occasional contradictions among them. The literature is vast and includes sometimes conflicting claims about appropriate or ideal methods. This paper aims to introduce some of the key dimensions and to invite reflection about the respective values and deficits of various alternatives. It hopes to inform pedagogical choices about learning objectives and foster corresponding clarity in classroom practice. It also hopes, indirectly, to promote clarity on values and learning outcomes among current practitioners and in educational research and to provide perspective on the discord among advocates of specific approaches.1The first two sections below introduce CBL and PBL, respectively, as instructional strategies reflecting certain values. (A teacher might well adopt both simultaneously.) Beyond these basics, there are many dimensions or distinctions to consider, addressed in successive sections (and summarized in 2 In addition, PBL gained recognition largely from applications in professional education—medical, business, and law schools (Butler et al., 2005 ). These instructional contexts tend to emphasize training. Contemporary science education, by contrast, tends to highlight student-based inquiry and understanding of scientific practices (National Research Council, 2012 ). The original approaches, as models, may need adapting. Most notably, the difference in context, between learning how to apply knowledge and learning how knowledge is generated, can be critical, as described below. The principles surveyed here can help guide the teacher in crafting an appropriate instructional design to accommodate specific contexts and values.

Table 1.

Key dimensions shaping learning environments and outcomes in CBL and PBL
• Occasion for engaging content: Contextualized (case based) or decontextualized?
• Mode of engaging student: Problem based or authority based?
• Instructional focus: Content, skills, and/or nature of science?
• Epistemic process: Apply knowledge or generate new knowledge?
• Setting: Historical case or contemporary case?
• Epistemic process: Open-ended or close-ended?
• Authenticity: Real case or constructed case?
• Clarity of problem: Well defined, ill defined, or unspecified?
• Social epistemic dimension: Collaborative or individual?
• Complexity of social epistemics: Single perspective or multiple perspectives?
• Scope: Narrow or broad?
• Level of student autonomy: Narrow or broad?
Open in a separate windowFocusing on distinctions in pedagogical approaches encourages one to think more rigorously about educational values and aims. For example, is knowing content the ultimate aim? To what degree is understanding scientific practice and/or its cultural contexts also important? What are the aims regarding analytical or problem-solving skills—or learning how to learn beyond the classroom? Is student motivation, or engagement in learning, a goal? Does one hope to shape student attitudes about the value or authority of science—or to recruit more students into scientific careers or to promote greater gender or ethnic balance? What role is afforded to student autonomy, either in shaping one''s own learning trajectory or as an independent thinker? Possible outcomes range from traditional conceptual content to skills, attitudes, and epistemic understanding. Different methods foster different outcomes. The goal here is to help one clarify one''s aims and align them with the appropriate strategies or teaching tools.3  相似文献   

6.
“I Belong Here.”: Culturally Sustaining Pedagogical Praxes from an Alternative High School in Brooklyn     
Borck  C. Ray 《The Urban Review》2020,52(2):376-391

Despite persistent class and race inequalities in educational attainment and achievement in the U.S., hegemonic cultural ideologies and urban education politics and policies continue to proceed from an insistence that education is the great equalizer. These ideologies do not take into account the ways that normative school culture and pedagogical praxes take for granted middle-class, white-supremacist cultural assumptions that privilege student populations whose social locations already probabilize high rates of achievement and attainment. Vast research published in The Urban Review and elsewhere has demonstrated the importance and efficacy of culturally sustaining pedagogy for improving outcomes for economically marginalized students of color (Allen in Urban Rev 47(1):209–231, 2015; Delpit in Harv Educ Rev 56(4):379–386, 1995; Farinde-Wu et al. in Urban Rev 49(2):279–299, 2017; Gay in culturally responsive teaching: theory, research, and practice, Teachers College Press, New York, 2010; Graves in Berkeley Rev Educ 5(1):5–32, 2014; Jemal in Urban Rev 49(4):602–626, 2017; Ladson-Billings in Crossing over to Canaan: the journey of new teachers in classrooms, Jossey-Bass, San Francisco, 2001, The dreamkeepers: successful teachers of African American children, Jossey-Bass Publishers, San Francisco, 2009; Lee in Culture, literacy and learning: taking bloom in the midst of the whirlwind, Teachers College Press, New York, 2006; Marciano in Urban Rev 49(1):169–187, 2016; Nieto in Language, culture, and teaching: critical perspectives, Routledge, New York, 2010; Paris in Educ Res 41(3):93–97, 2012; Paris and Alim in Culturally sustaining pedagogies: teaching and learning for justice in a changing world, Teachers College Press, New York, 2017; Wiggan and Watson in Urban Rev 48(5):766–798, 2016; Yosso in Race Ethn Edu, 8(1):69–91, 2005). This article uses rich ethnographic data from a transfer school in Brooklyn, New York that serves financially insecure youth of color who are “over-age and under-credited.” These data and my analysis showcase the expertise and indigenous knowledges of teachers who practice cultural relevance and critical racial awareness in order to engage, retain, graduate and prepare students who are historically and presently marked for failure by an education system that has always been more adept at reproducing social inequality than disrupting it (Borck in Qual Inq 20(10):1–8, 2016).

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7.
Safety of protease inhibitors and Arbidol for SARS-CoV-2 pneumonia in Zhejiang Province,China     
Yong-zheng Guo  Kai-jin Xu  Yong-tao Li  Jia-dan Fu  Min Xu  Ling Yu  Ji-fang Sheng  Biao Zhu 《Journal of Zhejiang University. Science. B》2020,21(12):948
The aim of this study was to evaluate the safety of an antiviral regimen of protease inhibitors combined with Arbidol (umifenovir) for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pneumonia patients. The genomic sequence of SARS-CoV-2 is highly homologous to that of SARS-CoV (Zhou et al., 2020). Previously published basic and clinical research on anti-SARS-CoV treatment found that lopinavir/ritonavir (LPV/r) could improve the prognosis of SARS patients (Chan et al., 2003; Chu et al., 2004). Darunavir (DRV) is another protease inhibitor that blocks the binding of SARS-CoV-2 to human angiotensin-converting enzyme 2 (Omotuyi et al., 2020). The broad-spectrum antiviral drug Arbidol (umifenovir) also shows in vitro anti-SARS-CoV activity (Khamitov et al., 2008).  相似文献   

8.
Testing a circular,feedback model in physical education from self-determination theory     
José A. Cecchini  Antonio Méndez-Giménez 《The Journal of educational research》2019,112(4):473-482
Self-determination theory has emerged as one of the most important theoretical frameworks to explain motivation in the context of physical education within school systems. The authors propose a new circular, longitudinal, feedback model to complement Vallerand’s (1997 Vallerand, R. J. (1997). Toward a hierarchical model of intrinsic and extrinsic motivation. In M. Zanna (Ed.), Advances in experimental social psychology (pp. 271360). New York: Academic Press.[Crossref] [Google Scholar]) hierarchical model. To test this new approach, Epstein’s TARGET strategies (Epstein, 1988 Epstein, J. (1988). Effective schools or effective students? Dealing with diversity. In R. Haskins &; B. MacRae (Eds.) Policies for America's public schools (pp. 89126). Norwood, NJ, Ablex. [Google Scholar]) were applied to 207 secondary education students. Moreover, the satisfaction of the basic psychological need for competence (C), intrinsic motivation (IM), and effort (E) were measured at nine time points (C1 → IM2 → E3 → C4 → IM5 → E6 → C7 → IM8 → E9). Structural equation modeling showed that the proposed model provided a satisfactory fit of the data, Satorra-Bentler χ2(22) = 36.31, p = .028, robust comparative fit index = .985, robust root mean square error of approximation = .056 (90% CI [.019, .088]), standardized root mean square residual = .039, power = 1.00. It was also observed that all variables increased progressively, suggesting interplay among them. This shows a concurrent causal relationship among these variables that produces a synergistic effect.  相似文献   

9.
Clinical characteristics and plasma antibody titer of patients with COVID-19 in Zhejiang,China     
Wei-ling Xiang  Jing-jing Cheng  Lian-peng Wu  Bing-yu Chen  Wen-xin Li  Dan-ying Qiu  Wei Zhang  Fei-hang Ge  Dong Chen  Zhen Wang 《Journal of Zhejiang University. Science. B》2020,21(12):955
Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which first affected humans in China on December 31, 2019 (Shi et al., 2020). Coronaviruses generally cause mild, self-limiting upper respiratory tract infections in humans, such as the common cold, pneumonia, and gastroenteritis (To et al., 2013; Berry et al., 2015; Chan et al., 2015). According to the Report of the World Health Organization (WHO)-China Joint Mission on COVID-19 (WHO, 2020), the case fatality rate of COVID-19 increases with age, while the rate among males is higher than that among females (4.7% and 2.8%, respectively). Since an effective vaccine and specific anti-viral drugs are still under development, passive immunization using the convalescent plasma (CP) of recovered COVID-19 donors may offer a suitable therapeutic strategy for severely ill patients in the meantime. So far, several studies have shown therapeutic efficacy of CP transfusion in treating COVID-19 cases. A pilot study first reported that transfusion of CP with neutralizing antibody titers above 1:640 was well tolerated and could potentially improve clinical outcomes through neutralizing viremia in severe COVID-19 cases (Chen et al., 2020). Immunoglobulin G (IgG) and IgM are the most abundant and important antibodies in protecting the human body from viral attack (Arabi et al., 2015; Marano et al., 2016). Our study aimed to understand the aspects of plasma antibody titer levels in convalescent patients, as well as assessing the clinical characteristics of normal, severely ill, and critically ill patients, and thus provide a basis for guiding CP therapy. We also hoped to find indicators which could serve as a reference in predicting the progression of the disease.  相似文献   

10.
Efficient propagation with in vitro seed germination of Vanda falcata     
Xiao-fen Liu  Li-li Xiang  Yan Huang  Ya-jing Li  Fang Li 《Journal of Zhejiang University. Science. B》2020,21(12):999
Vanda falcata (Thunb.) Beer (Orchidaceae), a famous native orchid of China, Japan, and Korea, is known as one of the most beautiful and charming orchid species in the world (Ohwi, 1965; Lawler, 1984; Arditti, 2008). V. falcata is widely cultivated and delights the world with its compact plant shape, elegant white blooms, and sweet coconut-like scent. However, vegetative propagation by division has limited the development of V. falcata because of its inefficiency (Mitsukuri et al., 2009a, 2009b).  相似文献   

11.
Impact on mathematics self-beliefs from a mastery-based mathematics software     
Teomara Rutherford  Allison S. Liu  Arena S. Lam  Katerina Schenke 《Journal of Research on Technology in Education》2020,52(1):79-94
Abstract

Self-beliefs are important determinants of student choice and success (Wigfield & Eccles, 2000 Wigfield, A., & Eccles, J. S. (2000). Expectancy–value theory of achievement motivation. Contemporary Educational Psychology, 25(1), 6881. doi:10.1006/ceps.1999.1015[Crossref], [PubMed], [Web of Science ®] [Google Scholar]) and are informed by student educational experiences, such as prior success with a task (Bandura, 1986 Bandura, A. (1986). Social foundations of thought and action: A social cognitive theory. Englewood Cliffs, NJ: Prentice-Hall. [Google Scholar]). The potential for Computer-Based Interventions as self-belief-supporting learning environments is examined in this study, focusing on the mathematics software, Spatial Temporal (ST) Math. ST Math includes elements theorized to support student self-beliefs, including informative feedback and a self-pacing structure. Using a randomized control trial, we find that students who play ST Math have higher mathematics self-beliefs than their control counterparts, and that ST Math operates through self-beliefs to positively influence achievement. ST Math’s impact on student self-beliefs is strongest for those students who had lower mathematics achievement scores.  相似文献   

12.
Towards an Affective Childist Literary Criticism     
García-González  Macarena 《Children‘s Literature in Education》2022,53(3):360-375

A long-asked question in children’s literature studies is how the child reads the very same book we (adults) have read. In 1984, Peter Hunt argued for a “childist criticism” proposing that young readers’ multiple individual responses to literature should inform adults’ critical practice. In this article, I propose that affect theory and new materialist epistemologies could reorient our critical practice in and with children’s literature. Using the concept of childist criticism (Hunt 1984, 1991) and Maggie MacLure’s (2013) notion of the “wonder of data,” I follow different encounters between children (and researchers) and the book La madre y la muerte/La partida (Laiseca et al., 2016). This book tells a macabre story about a mother that cannot bear to have her child taken away by Death. By following the book’s agency (García-González & Deszcz-Tryhubczak, 2020) in the research assemblage of different projects, I propose possible affective methodological orientations to post-representational research for children’s literature criticism.

  相似文献   

13.
Socialisation into Teaching: the research which lost its way     
Paul Atkinson  Sara Delamont 《British Journal of Sociology of Education》1985,6(3):307-322
The paper argues that in recent years sociologists have neglected the processes of occupational socialisation of leaching, despite research interest in everyday life in other educational settings. Shortcomings in the extant research on teacher socialisation and in the wider literature on professional socialisation are detailed to explain the lack of intellectual interest in teacher socialisation. Finally, the paper offers some potential lines for the development of research on teacher socialisation.

Just as we need to know more about how children are transformed into pupils, so must we know more about how young persons (usually college students) are transformed into teachers

(Wax & Wax, 1971, pp. 10‐11)
 

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