排序方式： 共有47条查询结果，搜索用时 15 毫秒
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P C Deshmukh Kaushal Jaikumar Pillay Thokala Soloman Raju Sudipta Dutta Tanima Banerjee 《Resonance》2017,22(6):577-596
Even as the theory of relativity is more than a hundred years old, it is not within easy reach of undergraduate students. These students have an insatiable urge to learn more about it even if the full machinery of the tools required to study the same is not within their comfortable reach. The recent detection of gravitational waves has only augmented their enthusiasm about the General Theory of Relativity (GTR), developed just over a hundred years now, encapsulated in Einstein’s Field Equations. The GTR provided a consistent formulation of the theory of gravity, removed the anomalies in the Newtonian model, and predicted spectacular natural phenomena which eventual experiments have testified to. This pedagogical article retraces some of the major milestones that led to the GTR and presents a simple numerical simulation of the GTR advance of the perihelion of planetary motion about the sun. 相似文献
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This paper examines the ways in which two Internet-based civil society groups, Hasiru Usiru and Praja, negotiate online and offline spaces of collective action in Bangalore, India’s “IT City.” Based on ethnographic research, the study extends collective action theory through an examination of communicative interactions and experiences of urban civil society actors in a developing country. The paper highlight factors that impede and support collective actions, including attitudes toward the Internet as a tool for democratic engagement, ideological motivations, and perceptions of identity and membership, among others. Such a line of inquiry is significant in highlighting the possibilities of ICTs for collective action, while simultaneously avoiding the tendency to inflate and overestimate their capacity to produce social change. 相似文献
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Malhotra Shivani Kumar Amit Dutta Rubina 《Education and Information Technologies》2021,26(3):2607-2621
Education and Information Technologies - As a technology the effect of the Internet of Things (IoT) is so strong that it has changed the way of living. The transition is also apparent in the field... 相似文献
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A key mandate of environment education (EE) is to motivate people to engage in environmentally responsible actions. However, school-based EE has not been successful in nurturing environmentally responsible actions in students. This is partly because of the information-oriented structure of current EE, which assumes that symbol-based knowledge directly leads to motivation and action. In contrast, educational initiatives based on practices and actions in the world, with farming as an important component, have been successful in creating transformative changes in behavior. To develop similar transformative interventions that motivate school students, it is necessary to understand the general psychological principles that make such participatory designs successful. Here we report a year-long observation study that seeks to contribute to such a general model, analyzing how farming actions changed the motivation of volunteers working in an urban community farm. We take an analysis approach inspired by recent embodied cognition models, where volunteers’ lived experiences and interactions with material entities are analyzed, to understand how motivation and values develop through such interactions. Based on this data, we propose a spiral model of motivation and action, where specific farming actions coalesce together to form motivation and values, which then seed wider environment-oriented actions in the world. 相似文献
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Dave Gelders René Patesson Sofie Vandoninck Pascale Steinberg Sara Van Malderen Pablo Nicaise Brice De Ruyver Isidore Pelc Mohan Jyoti Dutta Keith Roe Freya Vander Laenen 《Government Information Quarterly》2009
We bring different theories together to develop a theoretical framework that helps to understand how early warning messages about (new) dangerous drugs can influence the public's perception of substance use. We bring together the agenda setting theory, framing theory, dual processing theory, social learning theory, health belief model, theory of planned behavior, and cultivation theory in order to explain how warning messages diffused through the mass media can have an impact on the receivers' perceptions. Based on these insights we construct the Integrated Media Effect Framework (IMFE) that takes into account the role of cultural and structural contexts in the realm of early warning systems (EWS). Ultimately, this framework provides valuable guidelines for conceptualizing EWS and for developing applications by governments. 相似文献
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Kishore Dutta 《Resonance》2014,19(10):936-957
The dynamics of group chase-and-escape have attracted many physicists. In this article, we highlight the biological behaviors and the underlying mathematical rules and physical laws involved during the process of hunting in groups. We discuss some recently proposed stochastic models for such a system, which reveal various universal statistical features and show how slight variation of the behavioral rules or the interaction parameters can lead to very different statistical behaviors. A number of possible challenging questions that might lead to the development of a more life-like model for this novel enthralling dynamical problem are addressed. 相似文献