Digital badges,do they live up to the hype?     

Sherre Roy  Damien Clark 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(5):2619-2636

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Classics     

Amit Roy 《Resonance》2018,23(9):1025-1045

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What’s in a Name: Defining Reference/Introducing Ourselves     

Loriene Roy 《The Reference Librarian》2020,61(2):159-163

ABSTRACT

Reference is the word we use for the actions that librarians engage in to answer questions from the public. The art and practice of reference involves many actions that likely can only be understand through engagement. Students in a graduate basic reference class engage in active learning to introduce themselves to their classmates and to understand how to define what reference is. Both activities involve placing words in context.  相似文献   

Book reviews     

Anthony Layne  Jean Perrot  Raja Roy Singh 《Prospects》1989,19(2):290-302

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“Teachers’ Hegemony Sucks”: examining Beavis and Butt-head for signs of life     

Roy Fisher 《Educational studies》1997,23(3):417-428

The analysis of cultural artefacts, such as cartoons and films, provides the potential to gain insights into both the professional identities of teachers and the behaviour and self-concepts of students. This paper suggests that the ostensibly banal animated cartoon characters Beavis and Butt-head offer some utility in this respect. The paper explores aspects of the stereotypes and behaviour represented in the Beavis and Butt-head series and briefly discusses some possible interpretations of these images.  相似文献   

Prospective teachers' initial conceptions about pupils' understanding of science and mathematics     

Annica Gullberg  Eva Kellner  Iiris Attorps  Ingvar Thorén  Roy Tärneberg 《欧洲师范教育杂志》2008,31(3):257-278

Earlier reports have shown that prospective teachers' conceptions about teaching science to a high degree are resistant and do not change substantially during the teacher‐training programme. In our investigation we elucidate the prospective teachers' initial conceptions about pupils' understanding of science and mathematics. We applied ‘The Lesson Preparation Method' and used a phenomenographic approach in order to reveal the range of conceptions that the prospective teachers hold. A third of the prospective teachers did not consider pupils' conceptions when planning lessons. The rest of the 32 participants expressed awareness; some of the prospective teachers even referred to subject‐specific teaching experience. Also regarding the prospective teachers' conceptions about pupils' knowledge and beliefs, as well as about pupils' difficulties, there was a significant diversity. By raising these issues about pedagogical content knowledge the prospective teachers' conceptions can be extended and developed during the education.  相似文献   

Ohm’s law, Kirchoff’s law and the Drunkard’s walk     

Rahul Roy 《Resonance》1997,2(12):33-38

We change gears in this second part of the article and discuss one of the oldest problems in probability theory, viz. the simple random walk. The recurrence and transience of the random walk in different dimensions is later derived using the material from the first part.  相似文献   

Role of Common Biochemical Markers for the Assessment of Fracture Union     

Mukhopadhyay M  Sinha R  Pal M  Bhattacharyya S  Dan A  Roy MM 《Indian journal of clinical biochemistry : IJCB》2011,26(3):274-278

The progress of fracture union requires close monitoring. Whereas, clinical examination and radiographic studies assess the outcome, biochemical markers like serum alkaline phosphatase and urinary hydroxyproline reflect the actual status of bone resorption and bone formation over a short time frame. 36 patients of long bone fracture were randomly allocated for the study. When the patient reported to the Department of Orthopedics after fracture, serum and urinary samples were collected and X-ray of the affected part were taken. Subsequent samples were collected and X-ray taken just after management (either operative or conservative), after 3rd, 5th, 8th and 12th week, respectively after onset of fracture. According to the course of callus formation the patients were divided into two groups that progressed to proper union or malunion. The levels of serum alkaline phosphatase, urinary total and free hydroxyproline levels were measured and statistically analysed and compared. A statistically significant positive correlation between total urinary hydroxyproline excretion and serum alkaline phosphatase indicate progress towards satisfactory union. Thus, serial monitoring of biochemical markers of bone turnover can be used as an adjunct to clinical and radiological evidence of fracture healing.  相似文献   

Story of superconductivity     

Amit Roy 《Resonance》2017,22(5):461-473

Electricity is carried through metallic wires, called conductors. In the process, electrons move through metallic conductors that offer resistance (the value depends on the particular metal used), to the passage of electrons. This leads to the production of heat and loss of energy. This heating process is utilised in many electrical devices. However, for transmission of electrical energy from the power plants to the user and in many other applications, it would be a great boon if no energy was lost to resistance. The discovery of superconductivity by Heike Kamerlingh Onnes in 1911 at Leiden, offered a glimmer of hope to make this dream possible. It was a discovery totally unexpected at that time, and we owe this discovery to the painstaking and methodical investigations of Onnes–first to produce very low temperatures, and then measure properties of materials at these freezing temperatures.  相似文献   

The experiment of Michelson and Morley     

Amit Roy 《Resonance》2017,22(7):633-643

Light was assumed to propagate in a medium called ether which was all pervading and stationary. Earth’s motion through ether was expected to have an effect on the velocity of light in the direction of the relative motion by the law of addition of velocities. Michelson–Morley experiment used an interferometric technique to detect this effect and got a null result, which was the first strong evidence against existence of ether and eventually had a natural explanation in special theory of relativity.  相似文献