利用深掺杂Si所研制的微型流量传感器

使用深掺杂方法在Si材料中掺入Au原子后，其电阻率随温度T的变化关系从主要依赖于T-3/2项的浅掺杂材料变成主要依赖于exp(-E／KT)项的深掺杂材料，从而大幅度地提高了掺金Si材料对温度的敏感性。这样在理论上深掺杂Si材料比浅掺杂Si材料对温度的敏感性提高了约1000倍。对于深掺杂方法制成的微型流量传感器特性的测量证明了以上理论。深掺杂Si材料的应用不但大大提高了微型流量传感器的灵敏度，也大幅度地降低了响应时间。     

Practical Engagements and Co-Created Research

In this essay we foreground the value of engaging meaningfully with practitioners in our work. We review research by scholars whose work cuts across topics and contexts to gain insight into the power and practice of human communication as it shapes the world in which we live-highlighting work that is at its best because of its co-creation with practitioners. We propose five key features that provide a simple yet robust framework for developing and assessing the quality and value of engaged scholarship. Our thesis is that the best engaged scholarship may or may not be widely disseminated, but it is widely owned by co-creators who believe in its purpose and product.     

The Remote Area Teacher Program (RATEP): Cultural contextualisation of distance education through interactive

The Remote Area Teacher Education Program (RATEP) is a successful and innovative distance education programme. Curriculum design demands the meaningful integration of traditional distance education materials and strategies with other electronic technology and interactive multimedi a computer courseware. RATEP is more than ‘two‐way schooling’ for the Aboriginal and Torres Strait Islander distance education students studying in their home communities. Centred within Vygotsky's theory of cognitive development, the interactive multimedia computer courseware is informed by the intersecting set of the various cultural contexts: academic culture embedded in Western culture; Aboriginal and Torres Strait Islander cultures; and that of the computer. Illustrative examples from generalist and mathematics content and curriculum subjects demonstrate the effectiveness of culturally contextualising instructional computer‐student interface design in order to promote learning through interactive.     

Vanguards of Change

Following is the speech presented by the president of the Association for Counselor Education and Supervision at its annual luncheon, which was held on April 3, 2004, during the American Counseling Association National Conference in Kansas City, Missouri.     

A Mother-Daughter Book Club: A Search for Intimacy

This study examines the nature of group interaction and response to texts in an African American, mother-daughter literature discussion group in a predominately White, Midwestern college town. The implications of this research for teachers and librarians include a discussion about the value of community and intergenerational literacy and adolescents’ need to share literacy events with adults from their own racialized group.     

Disciplinary representation on institutional websites: changing knowledge,changing power?

This paper analyses shifts in the representation of history and physics as named organisational units on Australian university websites over the last 15 years in the context of broader questions about the production of knowledge in contemporary times. It derives from a broader project concerned with disciplinarity, changing university contexts and emerging conceptions of teaching and research. The paper points to a significant reduction in the number of departments and departmental webpages dedicated solely to those disciplines and the greater obscurity of disciplinary knowledge on the websites as a result. It suggests these findings are one symbolic sign of some changes in progress in universities, including a reduced strength of disciplinary voice in broader university management, some shift away from disciplines as the key reference points for knowledge production and some de-centring of their traditional strength in the academic labour market. The study also points to the methodological challenges of working with online sources of evidence.     

Online graduate students’ perceptions of best learning experiences

The purpose of this study is to examine the perceptions of online master’s students regarding their best learning experiences. The authors surveyed 86 graduate students concerning what helped them learn in the online environment. Results indicate that although graduate students learned using the same technological tools as undergraduates, they desired a deeper level of learning that requires more instructional forethought and planning. Student experiences were consistent with the constructivist theory, and implications for improving teaching based upon the constructivist theory are highlighted.     

Developing young children's multidigit number sense

Enrichment for mathematically gifted students in the elementary school needs to extend beyond puzzles or busywork and support the development of mathematical power through a differentiated curriculum. This article describes a series of enrichment experiences that were designed to develop young gifted children's understanding of large numbers, which was central to their investigation of space travel. Although large numbers are not traditionally included in the mathematics curriculum for young children, the children in this group responded enthusiastically to the enrichment experiences. These experiences provided the children with an opportunity to understand the large numbers they encountered in science resource material and to develop their mathematical power.