Small Circles: Mobile Telephony and the Cultivation of the Private Sphere     

Rich Ling  Johannes Bjelland  Pål Roe Sundsøy  Scott W. Campbell 《The Information Society》2014,30(4):282-291

This article examines how we use mobile telephony to maintain our physically and socially closest social circle. The analysis is based on traffic data gathered from Norway using approximately 24 million calls and texts made by private individuals. Previous research has shown that our temporal and spatial movement is highly predictable and that the majority of calls and text messages are sent to only four to six different persons. This article extends this research by examining both tie strength and the distance between the interlocutors in urban and rural settings. The findings show that even as information and communication technologies (ICTs) potentially put the world at our fingertips, the mobile phone is an instrument of a more limited geographical and social sphere. Approximately two-thirds of our calls/texts go to strong ties that are within a 25-km radius.  相似文献   

Musculoskeletal stiffness during hopping and running does not change following downhill backwards walking     

Corey W. Joseph  Elizabeth J. Bradshaw  Justin Kemp  Ross A. Clark 《Sports biomechanics / International Society of Biomechanics in Sports》2014,13(3):241-258

Eccentric contractions that provide spring energy can also cause muscle damage. The aim of this study was to explore leg and vertical stiffness following muscle damage induced by an eccentric exercise protocol. Twenty active males completed 60 minutes of backward-walking on a treadmill at 0.67 m/s and a gradient of ? 8.5° to induce muscle damage. Tests were performed immediately before; immediately post; and 24, 48, and 168 hours post eccentric exercise. Tests included running at 3.35 m/s and hopping at 2.2 Hz using single- and double-legged actions. Leg and vertical stiffness were measured from kinetic and kinematic data, and electromyography (EMG) of five muscles of the preferred limb were recorded during hopping. Increases in pain scores (over 37%) occurred post-exercise and 24 and 48 hours later (p < 0.001). A 7% decrease in maximal voluntary contraction occurred immediately post-exercise (p = 0.019). Changes in knee kinematics during single-legged hopping were observed 168 hours post (p < 0.05). No significant changes were observed in EMG, creatine kinase activity, leg, or vertical stiffness. Results indicate that knee mechanics may be altered to maintain consistent levels of leg and vertical stiffness when eccentric exercise-induced muscle damage is present in the lower legs.  相似文献   

Clash of Cultures in the Classroom     

Kenneth B. Clark 《Equity & Excellence in Education》2013,46(4):7-14

  相似文献   

Scientific arguments as learning artifacts: designing for learning from the web with KIE     

Philip Bell  Marcia C. Linn 《International Journal of Science Education》2013,35(8):797-817

We designed Knowledge Integration Environment (KIE) debate projects to take advantage of internet resources and promote student understanding of science. Design decisions were guided by the Scaffolded Knowledge Integration instructional framework. We report on design studies that test and elaborate on our instructional framework. Our learning studies assess the arguments students construct using the Knowledge Integration Environment debate project about light propagation and, explore the relationship between students' views of the nature of science and argument construction. We examine how students use evidence, determine when they add further ideas and claims and measure progress in understanding light propagation. To a modeate degree, students' views of the nature of science align with the quality of the arguments.  相似文献   

THE FRATERNITY IN THE STATE UNIVERSITY     

Thomas Arkle Clark 《Religious education (Chicago, Ill.)》2013,108(4):327-334

  相似文献   

Playing Around: Benefits,Assessments, and Guidelines for Adolescents' Educational Games     

Dr. Linda Nielsen Clark 《Clearing house (Menasha, Wis.)》2013,86(3):107-110

  相似文献   

Public Schooling,the Market Metaphor,and Parental Choice     

Clark Robenstine 《The Educational forum》2013,77(3):234-243

Leading organizational change is like climbing a mountain. Transformational leaders must prepare to lead change, understand the process and nature of change, and provide the essential gear so that those involved can be successful. The author draws on the literature and personal experiences as a hiker and change leader to provide a guide for leading organizational change.  相似文献   

YOU CAN TOUCH THIS: SIMULATION EXERCISES FOR AGING AND DISABILITY     

M. Cherie Clark  Paul W. Foos  Manon H. Faucher 《Educational gerontology》2013,39(7):643-651

Materials and exercises that may be used to simulate some of the deficits that occur in vision, hearing, mobility, and manual dexterity with increased age or disability are described. How arthritis, stroke, glaucoma, cataracts, and yellowing of the lens of the eye may be simulated is explained. The demonstrations are appropriate for educating health care professionals in gerontology and geriatrics and have been used with students of all ages.  相似文献   

‘I guess it scares us’ – Teachers discuss the teaching of poetry in senior secondary English     

Mary Weaven  Tom Clark 《English in Education》2013,47(3):197-212

This article reports on a participant‐centred research project with English teachers in a senior secondary college in Melbourne, Australia. It builds on previous research (Weaven and Clark 2009, 2011), which showed a low take‐up of the opportunities to teach poetry in Victoria's senior secondary English curriculum. This study explores the reasons why teachers of English are unwilling to use poetry texts in their senior classes. The teachers who participated in this study discussed and documented their attitudes towards the teaching of poetry and explored with each other the pedagogical challenges associated with teaching poetry. Their discussions – an analysis of which forms the empirical core of this article – reveal a range of explanations for teachers' reservations about offering poetry to their students. Importantly, these teachers were able to use professional discussion as a means to consider what changes in teaching practice could be successfully developed to facilitate more time spent on the teaching of poetry in senior secondary classes.  相似文献   

A coactive sign system for children who are dual-sensory impaired.     

S Watkins  T C Clark 《American annals of the deaf》1991,136(4):321-324

The SKI*HI Institute developed a system of coactive signing to help alleviate communication and instructional barriers for children who are dual-sensory impaired (deaf and blind). The system also can be used to help children who are severely multihandicapped learn how to communicate. The system includes optimized coactive signs that are functional, easy to feel, easy to relate to the referent, and easy to make, and it also includes techniques related to effective coactive sign use. The coactive sign system is illustrated on a series of video tapes that has been field tested and produced and is being disseminated throughout the United States and Canada.  相似文献