Dataset Information

Use of an End-to-End-Simulator to Analyze CYGNSS.

ABSTRACT: Tropical convection during the onset of two Madden-Julian oscillation (MJO) events, in October and December of 2011, was simulated using the Weather Research and Forecasting (WRF) Model. Observations from the Dynamics of the MJO (DYNAMO) field campaign were assimilated into the WRF Model for an improved simulation of the mesoscale features of tropical convection. The WRF simulations with the assimilation of DYNAMO data produced realistic representations of mesoscale convection related to westerly wind bursts (WWBs) as well as downdraft-induced gust fronts. An end-to-end simulator (E2ES) for the Cyclone Global Navigation Satellite System (CYGNSS) mission was then applied to the WRF dataset, producing simulated CYGNSS near-surface wind speed data. The results indicated that CYGNSS could detect mesoscale wind features such as WWBs and gust fronts even in the presence of simulated heavy precipitation. This study has two primary conclusions as a consequence: 1) satellite simulators could be used to examine a mission's capabilities for accomplishing secondary tasks and 2) CYGNSS likely will provide benefits to future tropical oceanic field campaigns that should be considered during their planning processes.

SUBMITTER: Hoover KE

PROVIDER: S-EPMC5963283 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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Use of an End-to-End-Simulator to Analyze CYGNSS.

Hoover Kacie E KE Mecikalski John R JR Lang Timothy J TJ Li Xuanli X Castillo Tyler J TJ Chronis Themis T

Journal of atmospheric and oceanic technology 20180119 No 1

Tropical convection during the onset of two Madden-Julian oscillation (MJO) events, in October and December of 2011, was simulated using the Weather Research and Forecasting (WRF) Model. Observations from the Dynamics of the MJO (DYNAMO) field campaign were assimilated into the WRF Model for an improved simulation of the mesoscale features of tropical convection. The WRF simulations with the assimilation of DYNAMO data produced realistic representations of mesoscale convection related to westerl ...[more]

PMID: 29805195

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Project description:PurposeTo investigate whether the use of a VR arthroscopic simulator can influence medical students' attitudes toward a career in orthopaedic surgery.MethodsTwenty-five medical students completed seven unsupervised sessions on a VR hip-arthroscopic simulator. All participants completed a pre-simulator and post-simulator pseudo-anonymized questionnaire consisting of 10 questions: six 10-point Likert scale questions addressing their interest in orthopaedics, surgery, and arthroscopy; and four 5-point Likert scale questions addressing their attitudes toward simulation. Prepaired and postpaired datasets were analyzed using Wilcoxon signed rank test.ResultsInterest in both orthopaedics and surgery was found to increase after simulator use (orthopaedics: 5.3 ± .3 to 8.4 ± .2, P = .0001; surgery: 5.8 ± .3 to 9.0 ± .2; P = .0001). It was also found that simulator use increased participants' interest in arthroscopy (5.4 ± .3 to 8.0 ± .3; P = .0001) and hip-arthroscopy (5.0 ± .3 to 7.6 ± .3; P = .0001). Participants reported they were more likely to attend endoscopic and arthroscopic surgical lists after simulator use (endoscopic: 6.9 ± .3 to 8.4 ± .2; P = .0003; arthroscopic: 5.9 ± .3 to 8.4 ± .2; P = .0001). After using the simulator, participants felt more strongly that VR simulation is a valuable training modality (P = .0025), that simulation should be a mandatory part of orthopaedics and surgical training (P = .0001 and P = .0001), and that access to VR simulators improves the quality of surgical training (P = .0024).ConclusionsThese results demonstrate that exposure to VR arthroscopic simulation increased medical students' interest in orthopaedics, surgery, and arthroscopy, without the need for direct supervision. Following VR simulator use, students reported they were more likely to engage with training opportunities, including arthroscopic and endoscopic surgery.Clinical relevanceUnderstanding factors that stimulate interest in orthopaedic surgery may help programs attract the broadest pool of potential trainees.

Project description:BackgroundVirtual reality (VR) simulators have become widespread tools for training medical students and residents in medical schools. Students using VR simulators are provided with a 3D human model to observe the details by using multiple senses and they can participate in an environment that is similar to reality.ObjectiveThe aim of this study was to promote a new approach consisting of a shared and independent study platform for medical orthopedic students, to compare traditional tendon repair training with VR simulation of tendon repair, and to evaluate future applications of VR simulation in the academic medical field.MethodsIn this study, 121 participants were randomly allocated to VR or control groups. The participants in the VR group studied the tendon repair technique via the VR simulator, while the control group followed traditional tendon repair teaching methods. The final assessment for the medical students involved performing tendon repair with the "Kessler tendon repair with 2 interrupted tendon repair knots" (KS) method and the "Bunnell tendon repair with figure 8 tendon repair" (BS) method on a synthetic model. The operative performance was evaluated using the global rating scale.ResultsOf the 121 participants, 117 participants finished the assessment and 4 participants were lost to follow-up. The overall performance (a total score of 35) of the VR group using the KS method and the BS method was significantly higher (P<.001) than that of the control group. Thus, participants who received VR simulator training had a significantly higher score on the global rating scale than those who received traditional tendon repair training (P<.001).ConclusionsOur study shows that compared with the traditional tendon repair method, the VR simulator for learning tendon suturing resulted in a significant improvement of the medical students in the time in motion, flow of operation, and knowledge of the procedure. Therefore, VR simulator development in the future would most likely be beneficial for medical education and clinical practice.Trial registrationChinese Clinical Trial Registry ChiCTR2100046648; http://www.chictr.org.cn/hvshowproject.aspx?id=90180.

Dataset Information

Use of an End-to-End-Simulator to Analyze CYGNSS.

Publications

Use of an End-to-End-Simulator to Analyze CYGNSS.

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