伞形科植物染色体数目报告

本文报道了伞形科15属24种和交种的染色体数，其中18个种和变种是首次报道。研     究表明， 我国天胡荽属 (Hydrocotyle L．)是伞形科多倍体比较普遍的类群。柴胡属(Bupleu-     rum L.)分别有4、6、7、8等基数，茴芹属(Pimpinella L.)的毛果组(Sect. Tragium)和光     果组(Sect．Tragoselinum)的代表种类的基数分别为9和10，因此，染色体基数可作为深入     研究某些属内种类演化的细胞学资料之一。思茅独活(Heracleum henryi Wolff)的花粉母细    胞在终变期时出现了4体环，说明结构杂合体可能是伞形科种类分化的一个因素。     

Sports,physical practice,and the female body, 1980–1989: women’s emancipation in Romania under communism

The purpose of this paper is to analyze the promotion and practice of physical exercise and sport in relation to social class and the shifting roles of women in communist-governed Romania during the 1980s. Since sport played a central role in communist ideology, especially as a means of maintaining a healthy and growing workforce, the government encouraged physical activity through gymnastics at work (in the form of “production gymnastics”), in public wellness centers, and at home. In this study, the authors trace societal shifts related to changing policies and laws through corresponding shifts in the representation of female bodies engaged in sport and exercise by the media. Content analysis of Romanian magazine and newspaper articles published during the 1980s reveals how group physical exercises, such as maintenance gymnastics, were promoted to working-class women and how images of women became increasingly feminized and sexualized, thereby reinforcing new norms of feminine beauty.     

Motion controllers for learners to manipulate and interact with 3D objects for mental rotation training

Mental rotation is an important spatial processing ability and an important element in intelligence tests. However, the majority of past attempts at training mental rotation have used paper‐and‐pencil tests or digital images. This study proposes an innovative mental rotation training approach using magnetic motion controllers to allow learners to manipulate and interact with three‐dimensional (3D) objects. Stereovision allows learners to perceive the spatial geometric form of a 3D object. This approach allows learners to perceive 3D objects in space through stereovision and make mental rotation visible from each intrinsic and invisible mental rotation step using motion‐interaction methods. This study examines the effects of user training performance and perceptions. The results indicate that the proposed approach can improve user mental rotation ability effectively. Learners expressed high degrees of concentration toward the mechanism that included direct control and immediate feedback. The results also suggest that female testers perceive greater degrees of playfulness toward the mechanism and improve more through training than male testers.     

The role of facial microexpression state (FMES) change in the process of conceptual conflict

This paper explores whether facial microexpression state (FMES) changes can be used to identify moments of conceptual conflict, one of the pathways to conceptual change. It is known that when the preconditions of conceptual conflicts are met and conceptual conflicts are detected in students, it is then possible for conceptual change to take place. There were 102 university and high school students who were involved in this research, and about 80% of the participants held erroneous preconceptions on the scientific topic chosen. The results showed that FMES changes were detected in the majority of the students who made erroneous predictions as they underwent conceptual conflict. Furthermore, the lack of FMES change was shown to indicate a lowered likelihood of conceptual change, while the presence of FMES change doubled the likelihood of conceptual change. The results confirm that FMES can be useful in determining learners’ awareness of conflicting concepts and their progress towards scientific understanding. Educational implications are discussed.     

Styles of creativity: Adaptors and innovators in a singapore context

Kirton (1976) described two creative styles, namely adaptors and innovators. Adaptors prefer to “do things better ” whilst, innovators prefer to “do things differently ”. This study explored the relationship between two creative styles (adaptor and innovator) and the Big Five personality traits (extraversion, agreeableness, conscientiousness, neuroticism, and openness to experience) and how they subscribe to creativity, risks and goal orientations. A total of 206 Polytechnic students from Singapore completed a self-report questionnaire, which consisted of the Kirton Adaptation-Innovation Inventory (Kirton, 1976), NEO-Five Factor Inventory (Saucier, 1994), Learning Goal Scale (Ng, 2003), What Kind of Person Are You Self-Report Inventory (Khatena & Torrance, 1976), Gough’s Creative Adjective Checklist, Risk Scenario, and Risk Taking Attitude Scale developed by Ng. It was found that adaptors were significantly more conscientious and subscribe to risk avoidance, ego approach and ego avoidance orientations than innovators, whilst, innovators were significantly more extraverted and open to experience and are likely to subscribe to creativity, risk taking and mastery goal orientations than adaptors. No significant differences were found between adaptors and innovators in agreeableness. The implications for the findings for the classroom teacher will also be discussed.     

Relationship of creativity and critical thinking to pattern recognition among Singapore private school students

Abstract

Cognitive pattern recognition is known to be an important skill for academic subjects such as mathematics, science, languages, or even humanities. In this study, we investigate the relationships between creativity, critical thinking, and pattern recognition among 203 private school students in Singapore. The instruments used include a creativity test (modified Creativity Selected Elements Questionnaire), a Critical Thinking Test (modified Cornell Critical Thinking), and a pattern recognition test. The main data analysis is done using the SMART-PLS structural equation modeling software. The results of the study reveal that creativity is a weak predictor of pattern recognition (β?=?0.131, p?>?0.05, f² = 0.024) but critical thinking is a good predictor (β?=?0.517, p?<?0.05, f² = 0.374). An implication of the research outcome is that more training on critical thinking should be given to the students to improve their pattern recognition ability.     

Investigating the Effectiveness of Inquiry Instruction on the Motivation of Different Learning Styles Students

The purpose of this study was to investigate 8th graders with different learning styles their motivation outcomes after implementing 10 weeks (40 hours) inquiry-based teaching. Two hundreds and fifty four 8th graders were involved in experimental group, this group of students experienced inquiry instruction. Two hundreds and thirty two 8th graders were involved in control group, they were taught by traditional science teaching. Students' motivation toward science learning questionnaire (SMTSL) (Tuan, Chin & Shieh, 2005) were implemented in both groups in the beginning and at the end of the study. Students in the experimental group filled out learning preference questionnaire (Lumsdaine & Lumsdaine, 1995) in the beginning of the study. Forty students which represent different learning styles were chosen from five experimental classes to conduct post-test interview. Paired t-test, MANOVA, analytic inductive methods were used for analyzing both qualitative and quantitative data. Findings indicated that after inquiry instruction students' motivation increased significantly (p<.001) than students who enrolled in traditional teaching. Four different learning styles of students increased significantly (p<.005) in SMTSL scales: self-efficacy, active learning strategies, science learning value, performance goal and achievement goal. No significant difference was found among four learning styles of students' motivation after inquiry teaching. Interview data supported that most of students with different learning styles were willing to participate in the inquiry learning activities, while they hold different reasons for their engagement. Findings confirm inquiry-based science teaching can motivate students with different learning styles in science learning. An erratum to this article is available at .     

Development of an instrument for exploring preservice technology teachers’ maker-based technological pedagogical content knowledge

With the development of the maker movement, more and more teachers are applying a broad range of technological tools in their pedagogy, instead of only information technology. This study details the development and validation of the Teachers Maker-based TPACK Survey Instrument (TMTSI), a revised model designed to measure technology teachers’ maker-based technological pedagogical content knowledge (TPACK) in utilizing maker-based tools to support their teaching. We recruited 165 preservice secondary technology teachers in Taiwan for this study and confirmatory factor analysis was applied to validate the instrument. Our findings suggest that TMTSI provided a valid and highly reliable research-based instrument that also serves as a professional development model to help scaffold the development of K-12 technology teachers. This paper details the theoretical foundations of TMTSI, reports on its reliability and validity, and discusses the application and implications of TMTSI for teacher education and professional development.     

Effects of an augmented reality-based mobile system on students’ learning achievements and motivation for a liberal arts course

ABSTRACT

Although Augmented Reality (AR) technology has already been adopted into mobile learning environments, additional effort must be put towards providing strong evidence that AR-based mobile systems are excellent educational tools that make a positive impact in or outside of the classroom. Our study utilized a similar AR-based mobile learning system developed to authentically teach a liberal arts course at a Taiwanese university. Under controlled study environments, we were able to design a system that could impart relevant concepts from the course to students outside of the traditional classroom setting. Experimental results demonstrated that students with the opportunity to learn through the proposed system demonstrated higher learning motivation, had better learning performance and comprehension abilities than those studying via the conventional outdoor instruction approach. Moreover, the questionnaire survey conducted after our study revealed that “confidence” was the most highly rated motivational factor among students who used the proposed system, suggesting that students were quite motivated to learn using the novel system supplemented with technological advances because they felt more sure of their knowledge and performance. Thus, we believe that using the proposed system can effectively improve the learning outcomes of students enrolled in the liberal arts course, with the particular benefit of boosting confidence in gaining new knowledge, which leads to an improvement of overall learning performance and motivation.