巴润矿业公司选矿厂生产实践

随着我国各项建设的需要,钢铁的产量也迅速攀升。在这个快速发展的浪潮中,包钢集团公司为了加强自有矿山资源的利用,增加原料的自有率,减轻进口矿价格上升的压力,于2004年成立巴润矿业公司,2008年开始建设巴润矿业公司选矿厂,2009年11月开始试车,2010年7月达到设计产能。本文介绍了巴润矿业公司选矿厂生产中的实际生产情况以及生产中遇到的问题。     

李贺、李商隐“登仙”诗歌中的通感表现手法析论

从诗歌理论角度而言,通感是一种诗歌表现手法。唐代李贺与李商隐的"登仙"类诗歌,运用通感手法为"登仙"主题服务,可以引用通感理论来分析其具体艺术特色。另外,二李最大的不同在于是否愿意融入宗教核心。李贺宁可以艺术通感技法来"创造"一个生动活脱的仙境,也不愿深入宗教核心,这是他与义山最大的不同。而"登仙"对李贺而言是一种摹幻及创造性的审美活动,对义山而则为力图实践的宗教活动。     

Parenting styles and bullying. The mediating role of parental psychological aggression and physical punishment

Studies concerning parenting styles and disciplinary practices have shown a relationship between both factors and bullying involvement in adolescence. The scarce available evidence suggests that abusive disciplinary practices increase teenagers’ vulnerability to abuse in school or the likelihood of them becoming abusers of their peers in the same context. However, there is a lack of knowledge about the indirect effect of parenting styles in adolescents’ bullying involvement through disciplinary practices, although a relationship between parenting styles and disciplinary practices has been shown. The aim of this research was to determine the mediating role of punitive parental discipline (physical punishment and psychological aggression) between the dimensions of parents’ parenting styles and their children's involvement in bullying victimization and aggression. We used a sample comprising 2060 Spanish high school students (47.9% girls; mean age = 14.34). Structural equation modeling was performed to analyze the data. The results confirmed the mediating role of parental discipline between the parenting practices analyzed and students’ aggression and victimization. Significant gender-related differences were found for aggression involvement, where boys were for the most part linked to psychological aggression disciplinary practices and girls to physical punishment. Victimization directly correlated with parental psychological aggression discipline behavior across both sexes. In conclusion, the results seem to suggest that non-democratic parenting styles favor the use of punitive discipline, which increases the risk of adolescents’ bullying involvement. Therefore, intervention programs must involve parents to make them aware about the important role they play in this process and to improve their parenting styles.     

乾隆晚年台湾海口陋规案探析

乾隆五十二年,在审办台湾总兵柴大纪贻误军机、贪纵营私一案过程中,引发台湾海口陋规案。此案揭示出清中期台湾海口文武衙门朋分陋规银两的内幕。和同一时代其他情节相近的陋规案比较,乾隆帝处置海口陋规案异常严苛,有错综复杂的政治背景。     

Accounting for structure and agency in ‘close-up’ research on teaching,learning and assessment in higher education

This paper examines research into teaching, learning and assessment (TLA) in higher education in terms of structure and agency. It argues that although issues of structure and agency are seen as crucial in social theory, they are very little discussed in research into TLA in higher education and that a consideration of structure and agency raises some important questions about this research and the quality of the explanations that it generates. It is therefore time to reconsider this research from the standpoint of structure and agency so that more sophisticated approaches to researching, and generating explanations of, teaching, learning and assessment in higher education can be developed.     

Assessment for learning: a catalyst for student self-regulation

The development of students as lifelong, self-regulating learners is a valued outcome of higher education. To this end, the current project investigated how students in an undergraduate course experienced and responded to a teaching–learning environment where they were expected to take responsibility for their learning. The pedagogic environment of this course was grounded in strategies and activities associated with assessment for learning (AfL). As such, students were expected to participate in activities that provided them with opportunities to exercise control over their learning. Data gathering comprised individual semi-structured interviews and the collection of artefacts. Findings indicated goals helped students know where they were going; exemplars provided insights into what was expected and what constituted quality work; course activities elicited evidence of learning; dialogic interactions around these generated feedback about understandings and progress; the evaluation of exemplars developed evaluative knowledge, skill and expertise; peer review and feedback provided an authentic context for evaluation and monitoring of works-in-progress. It was concluded that, while each of the AfL strategies contributed to student self-regulation, the full impact of AfL as a catalyst for self-regulated learning was realised in the cumulative and recursive effect these strategies had on students’ thinking, actions and feelings.     

Teen Perceptions of the Promotion of Safer Sexual Practices: A Focus Group Study

Teens' own thoughts on fostering safe sexual practice are important perspectives in promoting adolescent sexual health yet are relatively absent in the literature. This focus group study explored teens' perceptions about the supports and challenges that exist as teens strive to engage in healthy sexual practices. Seventy-five teens participated in 11 focus groups using a semi-structured interview guide. School-based health centers provided the setting and facilitated sample recruitment. Focus groups were audiorecorded and transcribed verbatim. Data were analyzed using the focus group guide as a template and typologies, or clusters of concepts, were extracted to establish teen perceptions of the factors that support and challenge their ability to engage in safe sexual practices. The socio-ecological model provided the framework to identify these factors within the individual, family/parent, relational (peer/partner), community, or societal spheres of influence. Results discussed the importance of parents, the value of confidentiality, respect for teen decision-making, relationships skills, developmental aspects of the adolescent years, and social interpretations of gender. These findings revealed important considerations as adults develop policies, messages, and programs designed to promote safe sexual behavior in teens.     

山东省禹城市粮食生产资源利用效率评价

粮食生产资源利用效率研究是实现粮食稳产、高产的前提，也是保障国家粮食安全的理论基础。对不同条件下的作物生产潜力准确估算和适宜的资源利用效率评价是粮食生产资源利用效率研究的核心内容。本文采用PS123作物生长模型进行作物生产潜力计算，根据山东省禹城市实际状况，确定了模型输入参数，计算了研究区玉米、小麦和大豆的光合、光温、气候和气候－土壤生产潜力，采用作物结构订正计算区域粮食生产潜力。考虑粮食生产中光热资源、水资源、土地资源、社会经济资源等方面，从准则层和因子层两个层面构建了粮食生产资源利用效率评价模型，确定了各评价因子的目标值和权重，对禹城市粮食生产资源利用效率进行评价。研究结果表明：　①山东省禹城市光合生产潜力52 784kg/hm²，光温生产潜力11 023kg/hm²，气候生产潜力8 377kg/hm²，气候-土壤生产潜力6 450kg/hm²，对这3种作物的实际产量进行结构订正得到该市1999年～2001年粮食平均现实生产能力为6 244kg/hm²，禹城市粮食生产潜力较大；　②制约粮食生产稳产、高产主要自然因子为水资源的不合理利用，劳动生产率、化肥利用率和产投比的低下是主要的社会经济限制因子。根据不同的限制性因子，本文提出了单项资源利用技术改进措施。     

全球土壤退化评价

近几十年来，随着世界人口的急剧增长，人为活动引起的土壤退化日趋增强，原先局部的、次要的变化已转化为全球性的重大变化，威胁着人类赖以生存的环境。本文阐述了包括中国在内的全球土壤退化类型、退化程度和引起土壤退化的主要人为因素，以便土壤管理者、决策者和实施机构为预测未来变化，防治土壤退化作出决策提供依据。