Hanging out in The Studio to challenge xenophobia: consolidating identities as community writers

This article examines findings from a Scottish Social Innovation Fund project carried out in an after‐school club known as The Studio. Researchers worked alongside artists to engage young people situated within their communities to challenge xenophobic discourses through the creation of positive narratives developed through story and arts‐based activities. The work used the “deep hang out theory” to generate a complex account of how the participants mediated the cultural tools surrounding them to produce a community text. Through engaging in an arts‐based process, the young writers and illustrators developed a sense of belonging within their communities, taking an active, engaged stance as literacy producers of texts that challenged xenophobic discourses. The lessons learned in this informal space are of relevance across contexts where young people wish to engage in creating positive narratives of community cohesion.     

An Investigation of Lebanese G7-12 Students’ Misconceptions and Difficulties in Genetics and Their Genetics Literacy

Lebanese educators claim that middle and secondary school students exhibit poor understanding of genetics due to misconceptions and difficulties that hinder progression in conceptual understanding of major genetics concepts and phenomena across different grade levels. They attributed these problems to Lebanon’s ill-structured genetics curriculum which needs a thorough revision in light of curricular reform models that take into account student misconceptions, cognitive abilities, and past experiences. Despite these claims, no empirical tests were done. Consequently, this study aimed to investigate G7-12 Lebanese students’ misconceptions and difficulties in genetics in an attempt to design a curriculum that would enhance student understanding of genetics. Using quantitative and qualitative data collection methods, we obtained an in-depth understanding of the nature of the misconceptions and difficulties encountered by students in grades 7–12, determined the level of students’ genetics literacy, and explored the progression of their level of conceptual understanding of major genetics concepts across grade levels. A questionnaire was administered to 729 students (G7-12) in 6 schools and was followed by semi-structured interviews with 62 students to validate the questionnaire results, gain further understanding of students’ misconceptions, and assess their level of genetics literacy. Findings showed that patterns of inheritance, the deterministic nature of genes, and the nature of genetic information were found to be among the most difficult concepts learned. Students also showed inadequate understanding of many basic genetics concepts which persist across grade levels. Furthermore, results indicated that students across all grade levels exhibited a low level of genetics literacy. Implications for practice and research are discussed.     

Child sexual and physical abuse among college students in Singapore and the United States

OBJECTIVES: The purpose of this study was to explore differences in rates and characteristics of child sexual and physical abuse experiences among women in Singapore and the US. METHOD: Participants (N=153) completed an anonymous questionnaire which assessed experiences of childhood sexual and physical abuse, abuse characteristics (e.g., victimization age, severity), and behavioral and subjective reactions to such experiences (e.g., labeling of experiences as abuse, psychological symptomatology). Exposure to other forms of traumatic life events was also assessed. RESULTS: In comparison to Singaporean women, US women were more likely to report a history of child sexual abuse, and to report experiencing more severe forms of sexual abuse. Women in Singapore were more likely than women in the US to report a history of child physical abuse, to report experiencing injury as a result of the abuse, and to disclose the abuse. Singaporean women with a history of child sexual abuse reported elevated psychological symptom levels relative to their nonabused peers and to US women with a history of child sexual abuse, even after controlling for exposure to other types of traumatic events. No significant differences in symptomatology with regard to child physical abuse were observed. CONCLUSIONS: Although preliminary in nature, the present findings are among the first to demonstrate differences in psychological adjustment between sexually abused and nonabused Asian women living in Asia. This study also provides some of the first support for cross-national differences in the psychological adjustment of child sexual abuse survivors.     

盐碱地土壤全氮含量的测定

将重铬酸钾-硫酸消煮土壤样品稀释到一定体积，再吸收一定量的土壤稀释液于克氏蒸馏瓶中，通过对蒸馏时间、碱用量、稀释液体积、样品体积等因素进行对比，同时与扩散皿法进行对比，得到了分析结果误差较小的最佳条件，并对盐碱土壤种植后全氮含量进行了测定，达到了令人满意的结果．     

Building Child Friendly Cities in the MENA region

The notion of Child Friendly Cities (CFCs) was first developed during the Second United Nations Conference on Human Settlements (HABITAT II), held in Istanbul in 1996. The concept is based on four general principles of the United Nations Convention on the rights of the child: (1) fair treatment of every child, regardless of ethnicity, gender, religion, socioeconomic background etc.; (2) top priority of the best interests of the child; (3) the child’s right to a better life and development; and (4) respect of children’s views. In a CFC, children are encouraged to take part in the decision making processes that affect their lives. Instead of starting yet another programme for children, the development of a CFC mobilises and connects existing agencies and actors. Giving examples of some cities in the Middle East and North Africa (MENA) region, this paper demonstrates that building CFCs has induced the development of mechanisms and structures which have enabled cities to address children’s issues in a systematic manner. These mechanisms and structures include: a municipal child-friendly legal framework, local development councils and NGO networks and local municipal development offices. The author argues that in building CFCs, the role of municipal authorities is indispensable in responding to the needs of children and young people within the municipalities’ mandates.     

The effects of Common Knowledge Construction Model sequence of lessons on science achievement and relational conceptual change

The purpose of this study was to investigate the effects of the Common Knowledge Construction Model (CKCM) lesson sequence, an intervention based both in conceptual change theory and in Phenomenography, a subset of conceptual change theory. A mixed approach was used to investigate whether this model had a significant effect on 7th grade students' science achievement and conceptual change. The Excretion Unit Achievement Test (EUAT) indicated that students (N = 33) in the experimental group achieved significantly higher scores (p < 0.001) than students in the control group (N = 35) taught by traditional teaching methods. Qualitative analysis of students' pre‐ and post‐teaching conceptions of excretion revealed (1) the addition and deletion of ideas from pre‐ to post‐teaching; (2) the change in the number of students within categories of ideas; (3) the replacement of everyday language with scientific labels; and (4) the difference in the complexity of students' responses from pre‐ to post‐teaching. These findings contribute to the literature on teaching that incorporates students' conceptions and conceptual change. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47: 25–46, 2010     

碘、溴和叠氮化物水溶液中的声化学反应

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Physical parameter sensitivity of system eigenvalues and physical model reduction

The identification of subsystems and/or components that is related to a given eigenvalue of the overall system is a challenging and important topic. The use of special structure of the system matrices obtained busing bond graphs can result in identifying subsystems and/or components that affect a given eigenvalue of an overall system. This paper, by making use of a set of theorems and definitions proposes an efficient procedure for this purpose. The basic procedure is based upon the calculation of sensitivity of eigenvalues. The so-called “effect” matrices are produced that indicates the relative importance of physical parameters on a selected eigenvalue. In addition to the relative importance, the effect matrix is used for an efficient physical model reduction procedure. Furthermore, reasons of different dynamic behavior of a system can be explained. Use of effect matrices also improves the physical model reduction method based on decomposition procedures. Three examples are given to illustrate the approach and its consequences.     

Relationship Between Hemodynamically Significant Ductus Arteriosus and Ischemia-Modified Albumin in Premature Infants

Hemodynamically significant ductus arteriosus (hsPDA) may alter organ perfusion by interfering blood flow to the tissues. Therefore, in infants with hsPDA, hypoxia occurs in many tissues. In this study, we aimed to investigate the diagnostic significance of serum (ischemia-modified albumin) IMA levels as a screening tool for hsPDA, and its relation to the severity of the disease in the preterm neonates. For this purpose, seventy-two premature infants with gestation age <34 weeks were included in the study. Thirty premature infants with hsPDA were assigned as the study group and 42 premature infants without PDA were determined as the control group. Blood samples were collected before the treatment and 24 h after the treatment, and analyzed for IMA levels. IMA levels in the study group (1.26 ± 0.36 ABSU) were found to be significantly higher than control group (0.65 ± 0.12 ABSU) (p < 0.05). In infants with hsPDA, a positive correlation was found between IMA and PDA diameter (ρ = 0.876, p = 0.022), and LA/Ao ratio (ρ = 0.863, p = 0.014). The cut-off value of IMA for hsPDA was measured as 0.78 ABSU with 88.89 % sensitivity, and 90.24 % specificity, 85.71 % positive predictive, 92.5 % negative predictive value [area under the curve (AUC) = 0.96; p < 0.001]. The mean IMA value of the infants with hsPDA before treatment was 1.26 ± 0.36 ABSU, and the mean IMA value of infants after medical treatment was 0.67 ± 0.27 ABSU (p = 0.03). We concluded that IMA can be used as a marker for the diagnosis and monitoring of a successful treatment of hsPDA.