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- 저자 : ( Mason John ) (검색결과 4 건)
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Attending to the Role of Attention when Teaching Mathematics
( Mason John ) 한국수학교육학회 2012 수학교육 학술지 Vol.2012 No.2
As part of building up an answer to the question “What can teachers do for students?” I propose that one important thing they can do is to become aware of what they are attending to when working with students. Indeed, it is important to be aware not simply what you are attending to, but what form that attention takes. The conjecture I want to put forward is that very often there is a misalignment between what the teacher is attending to, and what students are attending to, and that even when they are attending to the same thing, they may be attending in different ways. Following my practice to work at generating experience parallel to that of students so as to be sensitised to student experience, I propose some tasks which are intended to generate experience of how attention moves and shifts, and of different forms that attention can take. Noticing what happens inside oneself can then help being sensitive to students, and inform pedagogic choices in the moment so as to promote student learning as effectively as possible.
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Mason D. Vialonga,Luke G. Menken,Alex Tang,John W. Yurek,Li Sun,John J. Feldman,Frank A. Liporace,Richard S. Yoon 대한고관절학회 2022 Hip and Pelvis Vol.34 No.1
Purpose: Mortality rates following hip fracture surgery have been well-studied. This study was conducted to examine mortality rates in asymptomatic patients presenting for treatment of acute hip fractures with concurrent positive COVID-19(+) tests compared to those with negative COVID-19(–) tests. Materials and Methods: A total of 149 consecutive patients undergoing hip fracture surgery during the COVID-19 pandemic at two academic medical centers were reviewed retrospectively. Patients were divided into two groups for comparative analysis: one group included asymptomatic patients with COVID-19+ tests versus COVID-19– tests. The primary outcome was mortality at 30-days and 90-days. Results: COVID-19+ patients had a higher mortality rate than COVID-19– patients at 30-days (26.7% vs 6.0%, P=0.005) and 90-days (41.7% vs 17.2%, P=0.046) and trended towards an increased length of hospital stay (10.1 ±6.2 vs 6.8±3.8 days, P=0.06). COVID-19+ patients had more pre-existing respiratory disease (46.7% vs 11.2%, P=0.0002). Results of a Cox regression analysis showed an increased risk of mortality at 30-days and 90- days from COVID-19+ status alone without an increased risk of death in patients with pre-existing chronic respiratory disease. Conclusion: Factors including time to surgery, age, preexisting comorbidities, and postoperative ambulatory status have been proven to affect mortality and complications in hip fracture patients; however, a positive COVID19 test result adds another variable to this process. Implementation of protocols that will promote prompt orthogeriatric assessments, expedite patient transfer, limit operating room traffic, and optimize anesthesia time can preserve the standard of care in this unique patient population.
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Raveen Syan,Mason A. Briggs,John C. Olivas,Sakti Srivastava,Craig V. Comiter,Amy D. Dobberfuhl 대한비뇨의학회 2019 Investigative and Clinical Urology Vol.60 No.1
Purpose: OnabotulinumtoxinA (BTX) detrusor chemodenervation is an efficacious third-line treatment for overactive bladder. Despite high clinical efficacy rates for BTX injection, many patients refuse initial or repeat treatment due to the invasiveness of the cystoscopic route of delivery. We assess the feasibility of injecting the trigone and posterior bladder wall via a transvaginal route under ultrasound guidance using a human cadaveric model. Materials and Methods: Eight de-identified anonymous fresh female deceased donor cadaver pelvises were placed in supine split leg position. A transvaginal ultrasound probe guided injections of India ink into the trigone in 3 sites and the posterior wall in 2 sites. Full thickness bladder biopsies were then obtained and histologic analysis was performed to confirm presence of India ink in the detrusor layer. Results: The mean time from day of death was 11.0 days (range, 4.0–23.0 days). Three to five bladder biopsies were obtained per cadaver, for a total of 34 specimens (20 trigone, 14 posterior wall). Histologic analysis revealed presence of India ink within the detrusor layer in 8/8 (100.0%) of cadavers. The surgeon's perception of appropriate targeting under ultrasound guidance was confirmed in 8/8 cadavers (100.0%) involving the bladder trigone, and 7/8 (87.5%) involving the posterior wall. Of injections that were believed to have appropriately targeted the detrusor layer, 22/34 specimens (64.7%) demonstrated the presence of India ink under histologic analysis. Conclusions: Intradetrusor injection of the bladder trigone and posterior wall under transvaginal ultrasound guidance is feasible and has acceptable accuracy.
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Footstep Recognition for a Smart Home Environment
Ruben Vera Rodriguez,Richard P. Lewis,John S. D. Mason,Nicholas W. D. Evans 보안공학연구지원센터 2008 International Journal of Smart Home Vol.2 No.2
This paper reports some experiments which assess the potential use of a footstep biometric verification system for a smart home environment. We present a semi-automatic capture system and report results on a database with independent development and evaluation datasets comprised of more than 3500 footsteps collected from 55 persons. We present an optimisation of geometric and holistic feature extraction approaches. An equal error rate of 13% is obtained with holistic features classified with a support vector machine. The database is freely available to the research community.
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