Bowling ball dynamics revealed by miniature wireless MEMS inertial measurement unit   总被引：1，自引：1，他引：0  

Kevin King  N. C. Perkins  Hugh Churchill  Ryan McGinnis  Ryan Doss  Ron Hickland 《Sports Engineering》2011,13(2):95-104

This paper presents a novel sensor technology to deduce the dynamics of a bowling ball. The sensor, a miniature wireless inertial measurement unit (IMU), incorporates MEMS accelerometers and angular rate gyros, a microcontroller, a low power RF transceiver, and a rechargeable battery. When embedded in a bowling ball, the IMU transmits the acceleration and angular velocity data that define the dynamics of the ball starting with the bowler’s delivery and its motion in the lane. Example results from professional bowlers illustrate how this technology can be used to assess bowler skill and ball performance. For instance, the IMU accurately measures the spin dynamics of the ball which are crucial to develop the ball “hook.” An analysis of ball dynamics in the lane is distilled to a measurable “hook potential” metric for further assessing bowler skill. Finally, the sensor presented herein is believed to be the world’s smallest, wireless IMU. This highly miniaturized and wireless design will enable parallel training systems for many sports, including basketball, baseball, crew, cricket, golf, fly fishing, soccer, softball, tennis, rowing, among others.  相似文献   

身体     

Mike 《阅读》2011,(11):42

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The effectiveness of university knowledge spillovers: Performance differences between university spinoffs and corporate spinoffs   总被引：2，自引：0，他引：2  

Karl Wennberg  Johan Wiklund  Mike Wright 《Research Policy》2011,40(8):1128-1143

While much prior research has focused upon how the Technology Transfer Offices (TTOs) and other contextual characteristics shape the level of university spinoffs (USO), there is little research on entrepreneurial potential among individual academics, and to the best of our knowledge, no comparative studies with other types of spinoffs exist to date. In this paper we focus on an important but neglected aspect of knowledge transfer from academic research involving the indirect flow to entrepreneurship by individuals with a university education background who become involved in new venture creation by means of corporate spinoffs (CSO) after gaining industrial experience, rather than leaving university employment to found a new venture as an academic spinoff. We argue that the commercial knowledge gained by industry experience is potentially more valuable for entrepreneurial performance compared to the academic knowledge gained by additional research experience at a university. This leads us to posit that the average performance of CSOs will be higher than comparable USOs, but the gains from founder‘s prior experiences will be relatively higher among USOs whose founders lack the corporate context. We investigate these propositions in a comparative study tracking the complete population of USOs and CSOs among the Swedish knowledge-intensive sectors between 1994 and 2002.  相似文献   

Using clinical guidelines to assess the potential value of laboratory medicine in clinical decision-making     

Allan J. Hicks  Zoe L. Carwardine  Mike J. Hallworth  Eric S. Kilpatrick 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2021,31(1)

IntroductionIt is often quoted that 70% of clinical decisions are based on laboratory results, but the evidence to substantiate this claim is lacking. Since clinical guidelines aim to document best-practice decision making for specific disease conditions, inclusion of any laboratory test means that the best available evidence is recommending clinicians use it. Cardiovascular disease (CVD) is the world’s most common cause of mortality, so this study reviewed all CVD guidelines published by five national/international authorities to determine what proportion of them recommended laboratory testing.Materials and methodsFive leading CVD guidelines were examined, namely the European Society of Cardiology (ESC), the UK National Institute for Health and Clinical Excellence (NICE), the American College of Cardiology (ACC), the Australian Heart Foundation (AHF) and the Cardiac Society of Australia and New Zealand (CSANZ).ResultsA total of 101 guidelines were reviewed. Of the 33 individual ESC guidelines relating to CVD, 24/33 made a direct reference to the use of clinical laboratory tests in either diagnosis or follow-up treatment. The same applied to 15/20 of NICE guidelines, 24/32 from the ACC and 15/16 from the AHF/CSANZ. Renal function and blood count testing were the most recommended (39 and 26 times), with lipid, troponin and natriuretic peptide measurement advocated 25, 19 and 19 times respectively.ConclusionsThis study has shown that laboratory testing is advocated by between 73% and 94% of individual CVD guideline recommendations from five national/international authorities. This provides an index to assess the potential value of laboratory medicine to healthcare.  相似文献   

Learning in the practicum: engaging pre-service teachers in reflective practice in the online space     

Mellita Jones  Josephine Ryan 《Asia-Pacific Journal of Teacher Education》2014,42(2):132-146

It is argued that online discussion is a useful tool for creating opportunities for learning in teacher education. In a project designed to improve the practicum in rural areas, researchers placed pre-service teachers (PSTs) in two different moderated online discussion forums: an unstructured personal blog space and a structured threaded discussion forum where discussion topics guided them to reflect on their practicum experiences in relation to theoretical components of their studies. Findings indicated a marked difference in the contributions made to each form of online discussion with significantly greater participation in the unstructured blog format. Using Kreber and Cranton’s hierarchy of reflection, analyses of both forums found that PSTs rarely engaged in high-level reflection. Examination of lecturer involvement in the forums suggests that their contributions did not sufficiently encourage PSTs towards optimum critical reflection. These results leave the researchers considering ways in which the practicum experience can better promote reflective practice in this crucial, component of teacher education.  相似文献   

We do language: English language variation in the secondary English classroom,by Anne H. Charity Hudley and Christine Mallinson     

Mike Metz 《Pedagogies: An International Journal》2014,9(3):275-277

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The polyadenylation code: a unified model for the regulation of mRNA alternative polyadenylation   总被引：3，自引：2，他引：1  

Ryan DAVIS  Yongsheng SHI 《Journal of Zhejiang University. Science. B》2014,15(5):429-437

The majority of eukaryotic genes produce multiple mRNA isoforms with distinct 3′ ends through a process called mRNA alternative polyadenylation (APA). Recent studies have demonstrated that APA is dynamically regulated during development and in response to environmental stimuli. A number of mechanisms have been described for APA regulation. In this review, we attempt to integrate all the known mechanisms into a unified model. This model not only explains most of previous results, but also provides testable predictions that will improve our understanding of the mechanistic details of APA regulation. Finally, we briefly discuss the known and putative functions of APA regulation.  相似文献   

II. The Bigger Picture     

Malke Rosenfeld  Ryan Conarro  Michael B. Schwartz 《Teaching Artist Journal》2014,12(4):221-230

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The importance of content and context     

Judith Breen  Mike Pedler  John Edmonstone 《Action Learning: Research and Practice》2014,11(2):233-234

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Development, Implementation, and Validation of a Computerized Test for Statewide Assessment     

James B. Olsen  Apryl Cox  Charles Price  Mike Strozeski  Idolina Vela 《Educational Measurement》1990,9(2):7-10

How does a testing component function in an integrated learning system? How can you customize computerized tests to meet local specifications? How are computerized tests implemented and evaluated? Is the pay-off of computerized testing justified?  相似文献