首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献，搜索用时 31 毫秒
1.
In Germany, age and readiness for school are still the main criteria for school entry decisions. As a result some children start school earlier or later than scheduled. Since the 1970s it is well known that school entries not according to the cut-off date are coupled with the social and ethnic family background of these children and result in differential school careers. Thus an early or delayed school entry may be seen as the starting point of cumulative educational inequalities. New results from three series of interviews with parents, Kindergarten teachers, and school headmasters being part of the longitudinal study BiKS (“Bildungsprozesse, Kompetenzentwicklung und Selektionsentscheidungen im Vor- und Grundschulalter”, educational processes, competence development and selection decisions in pre- and primary school age) now reveal how these decisions develop. One of these qualitative studies is dedicated to school entry decisions in families with Turkish migration background. It is concluded that especially two measures can reduce these early inequalities: (1) better information for the parents and (2) early preventive support for all children making delayed school entries no more necessary.  相似文献   

2.
Children as readers of picture books and the ways they respond to, and make meaning from, such texts are the focus of this article, which reports on a small-scale study undertaken in Norway and Wales, UK. The theoretical framing of the research draws on concepts of the multimodal ensemble in picture books and of the reading event as part of a social practice. The research design was developed from the team’s analysis of two texts, Pappa by Svein Nyhus (1998) and What does Daddy Do? by Rachel Bright (2009). Twenty-four children, who were 7 and 8 years old, took part in the study. This was built around two reading events for each book, staged as an immediate response and as a guided response. The data subsequently collected were analysed according to three overarching organisational principles, as book world, real world and play world. For both Daddy and Pappa, the first reading event showed the children’s responses were mainly directed towards exploring the book world. On the second reading event, references to the real world predominated for Daddy, while for Pappa the book world was again dominant. Across both reading events and for both books, the playworld revealed those occasions when the children expanded the meaning of the story, demonstrating an inventive ability to play with the text. Overall, the children’s responses moved fluidly across the three worlds, showing them to be energetically making connections between the reading, their experience of books and their own lives.  相似文献   

3.
This research aimed at identifying student profiles of perceptions by means of a clustering method using a validated questionnaire. These profiles describe students’ attraction to science and technology (S&T) studies and careers as a variable driven by school S&T self-concept and interest in school S&T. In addition to three rather predictable student profiles (confident enthusiast, average ambitious, and pessimistic dropout), the fourth fairly well-populated profile called confident indifferent was produced. Our second and third research questions allowed us to describe each profile in terms of the instructional methods to which their population was exposed (including the degree to which they were actively involved) and the instructional methods to which they would like more exposure. An analysis of the evolution of the profiles’ population over time is also presented. The results suggest that pedagogical variety and active involvement in the decision to pursue S&T are important. The perception of the utility and importance of S&T both in and out of school may also play an important role in these decisions. Minor pedagogical preferences were also found in certain age groups.  相似文献   

4.
This article explores posthumanism as a philosophy that emphasizes human relationships with the natural world by examining representations of animality, both in children’s literature (e.g. titles such as Where the Wild Things Are, Wild, Virginia Wolf, and No Fits, Nilson!) and in children’s play in order to better understand the significance of philosophy in children’s literature and lives. By fostering a feeling of “necessary wilderness,” or connection to nature (Almond, 2011, p. 110), and by practicing a sense of being in nature, “keeping some wildness always alive” (Lerman, 2012, p. 311) through literary engagement and animal play, the authors suggest that children and adults can maintain an interconnectedness with the natural world, even when they cannot be in it themselves. Through a mixed methods approach that combines educational theory, ecocriticism, and qualitative research, we discuss links between children’s stories and bodies, identifying how becoming animals through narrative engagement and play reflects posthumanist theory in practice, and encourages a child’s embodied knowledge of nature. The authors also speak to the ways that embodied education approaches that encourage animal play and “expressive literary engagement” [Sipe, 2002, pp. 476–483]) can support a shifting and necessary worldview informed by posthumanism, suggesting that philosophical change is necessary if humanity aims to survive the ecological and technological changes to come.  相似文献   

5.
This study contributed to the school readiness literature by taking an intrachild perspective that examined the relations between Latino/a children's school readiness profiles and later academic achievement. Teachers rated the school readiness of 781 Latino/a kindergartners during the first month of school using the Kindergarten Student Entrance Profile (KSEP). Latent class analysis (LCA) examined KSEP profiles across social-emotional, physical, and cognitive domains and identified five distinct school readiness classes that described students’ strengths and weaknesses at kindergarten entry. Among the predictors examined, gender was the only significant difference among the top two readiness classes, with girls less likely to be in the lower of these two classes (OR = 0.38). In addition, children in the bottom three readiness classes were significantly less likely than students in the top readiness class to have preschool experience (ORs = 0.02–0.19) and had significantly lower levels of English proficiency (ORs = 0.51–0.72). Class membership was significantly associated with scores on the Grade 2 California Standards Tests and only the top two readiness classes had reading fluency rates near or above a national benchmark at the end of Grade 2. The variation of early achievement found across readiness classes also showed that considering the pattern of a child's social-emotional and cognitive readiness might enhance school readiness assessment. Implications for integrating universal school readiness screeners within a comprehensive multigating assessment model are also discussed.  相似文献   

6.
This study refined the Multicultural Counseling Knowledge and Awareness Scale (MCKAS; Ponterotto et al. Journal of Multicultural Counseling and Development, 30, 153–180, 2002) in response to concerns in the literature (e.g., Constantine et al. Cultural Diversity and Ethnic Minority Psychology, 8(4), 334–345, 2002) focusing on original sample representation, factor structure, and constructs of interest within this scale. For this refinement study, a total of 176 participants from various counseling fields in the United States completed an online survey. The results of an exploratory factor analysis presented a 28-item 2-factor refined version of the MCKAS (MCKAS-R). The preliminary MANOVA analysis indicated that this refined scale differentiated multicultural counseling competencies of participants who were counselors, counseling students, and counselor educators. Implications of this scale for counselor training, practice, and future research are provided.  相似文献   

7.
Forty‐eight toddlers aged 17 to 31 months attending long‐day childcare participated in this project, which examined some of the influences of the day‐care context on their emerging pretend play. Ninety minutes of video‐taped observations were collected for each participant as they engaged in free play with their same‐age peers and their pre‐school‐aged peers. The play environment was assessed on a number of dimensions, including the provision of play materials, the quality of care and staff attitudes toward play. Additionally, the participants' weekly attendance pattern was taken into consideration. The complexity of pretend play was coded in accordance with Westby's Symbolic Play Scale (1991 Westby C A scale for assessing children's pretend play 1991 in: C. E. Shaefer, K. Gitlin & A. Sandgrund (Eds) Play diagnosis and assessment New York Wiley 131 161  [Google Scholar]). Two components of the long‐day childcare context—play with pre‐school‐aged peers and the unsatisfactory provision of play materials—were found to be significantly influential on the participants' complexity of pretend play. An attendance of four or more days in childcare was also found to be favourable. A number of implications for educational programming in the day‐care context arise from these results.  相似文献   

8.
Measuring gifted and talented (GT) students’ perceptions of their GT label might seem to be a relatively straightforward affair. Most of this research uses survey methods that ask GT students to complete Likert scale or open-ended response questionnaires about their perceptions of the label and then presents results in clear and quantifiable terms, such as “X % of students hold positive perceptions of the GT label.” However, our qualitative study of GT students in two middle school social studies classrooms presents findings that not only trouble, but prompt questions about simple proclamations regarding GT students’ perceptions of the GT label. What we found was that given the opportunity to share their thoughts at length, this group of GT students expressed a range of often contradictory perceptions about their GT label. Students expressed multiple interpretations and perceptions of the GT label, as well as both embraced the label and rejected the label.  相似文献   

9.
In plants, lipoxygenases (LOXs) play a crucial role in biotic and abiotic stresses. In our previous study, five 13-LOX genes of oriental melon were regulated by abiotic stress but it is unclear whether the 9-LOX is involved in biotic and abiotic stresses. The promoter analysis revealed that CmLOX09 (type of 9-LOX) has hormone elements, signal substances, and stress elements. We analyzed the expression of CmLOX09 and its downstream genes—CmHPL and CmAOS—in the leaves of four-leaf stage seedlings of the oriental melon cultivar “Yumeiren” under wound, hormone, and signal substances. CmLOX09, CmHPL, and CmAOS were all induced by wounding. CmLOX09 was induced by auxin (indole acetic acid, IAA) and gibberellins (GA3); however, CmHPL and CmAOS showed differential responses to IAA and GA3. CmLOX09, CmHPL, and CmAOS were all induced by hydrogen peroxide (H2O2) and methyl jasmonate (MeJA), while being inhibited by abscisic acid (ABA) and salicylic acid (SA). CmLOX09, CmHPL, and CmAOS were all induced by the powdery mildew pathogen Podosphaera xanthii. The content of 2-hexynol and 2-hexenal in leaves after MeJA treatment was significantly higher than that in the control. After infection with P. xanthii, the diseased leaves of the oriental melon were divided into four levels—levels 1, 2, 3, and 4. The content of jasmonic acid (JA) in the leaves of levels 1 and 3 was significantly higher than that in the level 0 leaves. In summary, the results suggested that CmLOX09 might play a positive role in the response to MeJA through the hydroperoxide lyase (HPL) pathway to produce C6 alcohols and aldehydes, and in the response to P. xanthii through the allene oxide synthase (AOS) pathway to form JA.  相似文献   

10.
In this article thought experiments are uncovered as key stimuli of philosophical potential in children’s literature and their presentation and function is examined in a selection of focal texts, including: Lewis Carroll’s Alice’s Adventures in Wonderland (1865) and Through the Looking-Glass (1871); Even the Parrot by Dorothy Sayers (1944); Nina Bawden’s Carrie’s War (1974); and A Game of Soldiers (1985) by Jan Needle. The thought experiment is a device common to science and philosophy and has been recognised as an heuristic tool in literature generally, but here children’s literature is drawn into the conversation, revealing that—as a dynamic mechanism of children’s narrative—thought experiments have a long-standing and particular role to play in books for young people. This paper connects with a recent turn in children’s literature discourse toward the conditions of power in books for young readers; it moves on the debate by demonstrating that the apparatus of thought experimentation places the implied child reader in a position of philosophical responsibility and forward thinking. Presenting thought experiments in different ways, formal properties of the thought experiment—such as conversational mode, double engagement and modal positioning—are identified and shown to open up a philosophical space of subsequence in children’s texts.  相似文献   

11.
Although children’s literature has long alluded to cultural connections between Africans and African Americans, very few texts establish clear lines of influence between particular African ethnic groups and African American characters and communities. Joyce Hansen’s The Captive (1994) and Sharon Draper’s Copper Sun (2006) stand out in portraying protagonists Kofi’s and Amari’s reliance on their past upbringing as Ashanti and Ewe, respectively. As Kofi and Amari endure the traumas of the Middle Passage and slavery in eighteenth-century America, they adapt by relying on their past socialization in traditional West African societies. The two novels challenge the idea of cultural erasure promoted in Elizabeth Yates’ Amos Fortune, Free Man (1950), which is still a fixture on multicultural reading lists for middle school students. The Captive and Copper Sun do provide sharply contrasting visions of their protagonist’s relationships to American society. Copper Sun indicates that a black girl’s concerns, including her need for subsistence and protection, and her desire for creative expression and personal autonomy, can complement the economic and military interests of the state. By contrast, The Captive insists on the necessity for its emancipated protagonist to maintain an adversarial role within a stratified, white-dominated U.S. culture. The novels thus highlight the very different messages about social identity and participation that recent multicultural children’s literature can convey.  相似文献   

12.
Visual signals convey emotions and intentions between individuals. Darwin underlined that human facial expressions represent a shared heritage between our species and many other social mammals. Social play is a fertile field to examine the role and the potential communicative function of facial expressions. The relaxed open-mouth (or play face) is a context-specific playful expression, which is widespread in human and non-human mammals. Here, we focus on playful communication by applying Tinbergen’s four areas of inquiry: proximate causation, ontogeny, function, and evolution. First of all we explore mimicry by focusing on its neural substrates and factors of modulation within playful and non-playful context (proximate causation). Play face is one of the earliest facial expressions to appear and be mimicked in neonates. The motor resonance between infants and their caregivers is essential later in life when individuals begin to engage in increasingly complex social interactions, including play (ontogeny). The success of a playful session can be evaluated by its duration in time. Mirroring facial expressions prolongs the session by favoring individuals to fine-tune their own motor sequences accordingly (function). Finally, through a comparative approach we also demonstrate that the elements constituting play communication and mimicry are sensitive to the quality of interindividual relationships of a species, thus reflecting the nature of its social network and style (evolution). In conclusion, our goal is to integrate Tinbergen’s four areas of ethological inquiry to provide a broader framework regarding the importance of communication and mimicry in the play domain of humans and other social mammals.  相似文献   

13.
  相似文献   

14.
In the twenty-first century, the Gothic has experienced a cultural resurgence in literature, film, and television for young adult audiences. Young adult readers, poised between childhood and adulthood, have proven especially receptive to the Gothic’s themes of liminality, monstrosity, transgression, romance, and sexuality (James, 2009, p. 116). As part of the Gothic’s incorporation into a broad range of texts for young people, the school story—a conventionally realist genre—has begun to include supernatural gothic characters including vampires, witches, angels, and zombies, and has once again become a popular genre for young readers. In the past decade, in particular, a large number of Gothic young adult series with female protagonists set in boarding schools have been published (These include Shadow Falls (2011–2013) by C.C. Hunter, Covenant (2011–2013) by Jennifer L. Armentrout, House of Night (2007–2014) by P.C. Cast, Mythos Academy (2011–2014) by Jennifer Estep, The Dragonian (2013–2015) by Adrienne Woods, The Morganville Vampires (2006–2014) by Rachel Caine, Blue Bloods (2006–2013) by Melissa de la Cruz, and Fallen (2009–2012) by Lauren Kate). In this article, we will consider the first books in three such supernatural Gothic series that feature vampires and witches: Richelle Mead’s Vampire Academy (2007), Claudia Gray’s vampire romance Evernight (2008) and Rachel Hawkins’ Hex Hall (2010). These books are significant for the ways in which the traditional school story is adapted and transformed by the Gothic to define models of contemporary girlhood. Although Diane Long Hoeveler suggests that “the ‘body’ that emerges from female gothic textuality is a highly gendered one” (1998, p. 18), what we see in these texts is how the school story setting enables Gothic female protagonists who are unique, disruptive, and potentially transformative, despite the limitations enforced by the heterosexual romance plot. We argue that these novels, while conservative in some respects, rework the school story genre in that they foreground the sexual and romantic desires of girl protagonists regardless of the threat they constitute to the institution and the safety of others.  相似文献   

15.
The aim of this study was to examine the potential impact of the representational characteristics of models and students’ educational levels on students’ views of scientific models and modeling (VSMM). An online multimedia questionnaire was designed to address three major aspects of VSMM, namely the nature of models, the nature of modeling, and the purpose of models. The three scales of representational characteristics included modality, dimensionality, and dynamics. A total of 102 eighth graders and 87 eleventh graders were surveyed. Both quantitative data and written responses were analyzed. The influence of the representational characteristics seemed to be more salient on the nature of models and the purpose of models. Some interactions between the educational levels and the representational characteristics showed that the high school students were more likely to recognize textual representations and pictorial representations as models, while also being more likely to appreciate the differences between 2D and 3D models. However, some other differences between educational levels did not necessarily suggest that the high school students attained more sophisticated VSMM. For instance, in considering what information should be included in a model, students’ attention to particular affordances of the representation can lead to a more naive view of modeling. Implications for developing future questionnaires and for teaching modeling are suggested in this study.  相似文献   

16.
This paper is a critique of the school education productivity evaluation and two research constructs germane to it, teacher quality and teacher effectiveness. The paper will argue that policy inceptions of teacher quality and teacher effectiveness proxy for the productive capacity of schools and more broadly, school systems. Student achievement scores as determined by high stakes testing are the school education outputs of policy significance in current times while inputs thought to matter are increasingly tapered towards the particular characteristics of classroom teachers, specifically their quality (usually credentials) and effectiveness (teaching behaviours). The paper finds that attributing school system success largely to teachers and their work, especially in terms of their classroom teaching practice(s), distorts the school education policy agenda so that evaluations of school productivity purely serve accountability purposes.  相似文献   

17.
Adopting a two-phase explanatory sequential mixed methods research design, the current study examined the impact of student teaching experiences on pre-service teachers’ readiness for technology integration. In phase-1 of quantitative investigation, 2-level growth curve models were fitted using online repeated measures survey data collected from 68 pre-service teachers doing their student teaching. The results revealed significant progress in readiness for technology integration during student teaching and significant variability in individual change trajectories of readiness for technology integration. Two dummy variables, prior-teaching (0 = “having no prior teaching experience”; 1 = “having prior teaching experience”) and grade-level (0 = “elementary level”; 1 = “secondary level”), were identified as significant in predicting the shape of individual change trajectories of readiness for technology integration. In phase-2 of qualitative investigation, follow-up interview data were collected from 11 pre-service teachers among those who participated in the online surveys. The interview data was analyzed both deductively and inductively yielding clues and insights for interpreting and understanding the quantitative results from phase-1. Based on its quantitative and qualitative results, this study made recommendations for future technology integration research and for improving pre-service teachers’ technology use experience during student teaching.  相似文献   

18.
  相似文献   

19.

Objective

Salmonella enterica remains a major cause of food-borne disease in humans, and Salmonella Typhimurium (ST) contamination of poultry products is a worldwide problem. Since macrophages play an essential role in controlling Salmonella infection, the aim of this study was to evaluate the effect of glycyrrhizic acid (GA) on immune function of chicken HD11 macrophages.

Methods

Chicken HD11 macrophages were treated with GA (0, 12.5, 25, 50, 100, 200, 400, or 800 μg/ml) and lipopolysaccharide (LPS, 500 ng/ml) for 3, 6, 12, 24, or 48 h. Evaluated responses included phagocytosis, bacteria-killing, gene expression of cell surface molecules (cluster of differentiation 40 (CD40), CD80, CD83, and CD197) and antimicrobial effectors (inducible nitric oxide synthase (iNOS), NADPH oxidase-1 (NOX-1), interferon-γ (IFN-γ), LPS-induced tumor necrosis factor (TNF)-α factor (LITAF), interleukin-6 (IL-6), and IL-10), and production of nitric oxide (NO) and hydrogen peroxide (H2O2).

Results

GA increased the internalization of both fluorescein isothiocyanate (FITC)-dextran and ST by HD11 cells and markedly decreased the intracellular survival of ST. We found that the messenger RNA (mRNA) expression of cell surface molecules (CD40, CD80, CD83, and CD197) and cytokines (IFN-γ, IL-6, and IL-10) of HD11 cells was up-regulated following GA exposure. The expression of iNOS and NOX-1 was induced by GA and thereby the productions of NO and H2O2 in HD11 cells were enhanced. Notably, it was verified that nuclear factor-κB (NF-κB) and c-Jun N-terminal kinase (JNK) pathways were responsible for GA-induced synthesis of NO and IFN-γ gene expression.

Conclusions

Taken together, these results suggested that GA exhibits a potent immune regulatory effect to activate chicken macrophages and enhances Salmonella-killing capacity.
  相似文献   

20.
  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号