3,888 research outputs found
Streaming for the Win: The Future of Live Sports Entertainment in Direct-to-Consumer Streaming
This topical essay discusses the growing presence of live sports entertainment on direct-to-consumer streaming services, and how future research could benefit consumers and companies. A brief overview of Amazon Prime streaming NFL Thursday Night Football games is introduced, along with a background of live sports and streaming services. A call to action for future research is provided with potential areas in which investigators can focus
From Andy’s Room to Big City and Nickelodeon: Extending the Brand to New Consumers through Alternate Broadcasts of Live Sports Entertainment
The Walt Disney Company aired the Toy Story Football Funday on Sunday, October 1st, 2023. A live game between the Jacksonville Jaguars and Atlanta Falcons played in London, England aired on ESPN+ while the Toy Story-themed alternate broadcast aired on Disney+. This game followed multiple alternate broadcasts of NFL games by Nickelodeon and an NHL game themed after Big City Greens on the Disney Channel, Disney XD, and Disney+. This analysis paper discusses the use of these alternate broadcasts in an attempt to attract younger viewers and expand consumers for leagues and live sports entertainment. A brief history of sports organizations participating in fan outreach programs, including contests and alternate broadcasts is provided before an analysis and discussion of how such presentations may impact viewership, competition among studios, and the future of consumer entertainment
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IMRT QA using machine learning: A multi-institutional validation.
PurposeTo validate a machine learning approach to Virtual intensity-modulated radiation therapy (IMRT) quality assurance (QA) for accurately predicting gamma passing rates using different measurement approaches at different institutions.MethodsA Virtual IMRT QA framework was previously developed using a machine learning algorithm based on 498 IMRT plans, in which QA measurements were performed using diode-array detectors and a 3%local/3 mm with 10% threshold at Institution 1. An independent set of 139 IMRT measurements from a different institution, Institution 2, with QA data based on portal dosimetry using the same gamma index, was used to test the mathematical framework. Only pixels with ≥10% of the maximum calibrated units (CU) or dose were included in the comparison. Plans were characterized by 90 different complexity metrics. A weighted poison regression with Lasso regularization was trained to predict passing rates using the complexity metrics as input.ResultsThe methodology predicted passing rates within 3% accuracy for all composite plans measured using diode-array detectors at Institution 1, and within 3.5% for 120 of 139 plans using portal dosimetry measurements performed on a per-beam basis at Institution 2. The remaining measurements (19) had large areas of low CU, where portal dosimetry has a larger disagreement with the calculated dose and as such, the failure was expected. These beams need further modeling in the treatment planning system to correct the under-response in low-dose regions. Important features selected by Lasso to predict gamma passing rates were as follows: complete irradiated area outline (CIAO), jaw position, fraction of MLC leafs with gaps smaller than 20 or 5 mm, fraction of area receiving less than 50% of the total CU, fraction of the area receiving dose from penumbra, weighted average irregularity factor, and duty cycle.ConclusionsWe have demonstrated that Virtual IMRT QA can predict passing rates using different measurement techniques and across multiple institutions. Prediction of QA passing rates can have profound implications on the current IMRT process
Effects of the Boy Scouts of America Personal Fitness Merit Badge on Cardio-Metabolic Risk, Health Related Fitness and Physical Activity in Adolescents Boys
International Journal of Exercise Science 10(7): 964-976, 2017. A growing number of adolescents are more sedentary and have fewer formal opportunities to participate in physical activity. With the mounting evidence that sedentary time has a negative impact on cardio-metabolic profiles, health related fitness and physical activity, there is a pressing need to find an affordable adolescent physical activity intervention. One possible intervention that has been overlooked in the past is Boy Scouts of America. There are nearly 900,000 adolescent boys who participate in Boy Scouts in the United States. The purpose of this research study was to evaluate the effect of the Personal Fitness merit badge system on physical activity, health-related fitness, and cardio-metabolic blood profiles in Boy Scouts 11-17 years of age. Participants were fourteen (N = 14) Boy Scouts from the Great Salt Lake Council of the Boy Scouts of America who earned their Personal Fitness merit badge. Classes were held in the Spring of 2016 where boys received the information needed to obtain the merit badge and data were collected. Results from the related-samples Wilcoxon signed rank test showed that the median of differences between VO2 peak pre-test and post-test scores were statistically significant (p = 0.004). However, it also showed that the differences between the Pre-MetS (metabolic syndrome) and Post-MetS scores (p = 0.917), average steps taken per day (p = 0.317), and BMI (p = 0.419) were not statistically significant. In conclusion, the merit badge program had a positive impact on cardiovascular endurance, suggesting this program has potential to improve cardiovascular fitness and should be considered for boys participating in Boy Scouts
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Comparison of transabdominal ultrasound and electromagnetic transponders for prostate localization.
The aim of this study is to compare two methodologies of prostate localization in a large cohort of patients. Daily prostate localization using B-mode ultrasound has been performed at the Nebraska Medical Center since 2000. More recently, a technology using electromagnetic transponders implanted within the prostate was introduced into our clinic (Calypso(R)). With each technology, patients were localized initially using skin marks. Localization error distributions were determined from offsets between the initial setup positions and those determined by ultrasound or Calypso. Ultrasound localization data was summarized from 16619 imaging sessions spanning 7 years; Calypso localization data consists of 1524 fractions in 41 prostate patients treated in the course of a clinical trial at five institutions and 640 localizations from the first 16 patients treated with our clinical system. Ultrasound and Calypso patients treated between March and September 2007 at the Nebraska Medical Center were analyzed and compared, allowing a single institutional comparison of the two technologies. In this group of patients, the isocenter determined by ultrasound-based localization is on average 5.3 mm posterior to that determined by Calypso, while the systematic and random errors and PTV margins calculated from the ultrasound localizations were 3 - 4 times smaller than those calculated from the Calypso localizations. Our study finds that there are systematic differences between Calypso and ultrasound for prostate localization
The Curious Case of Conference Realignment: A Call to Action for Research
This topical essay addresses the need for increased research related to the 2022-2023 iteration of conference realignment in college athletics. Namely, the essay provides a brief background on the massive shifts in major conferences beginning in the 2024-2025 school year. It suggests possible areas of inquiry for interested researchers that would provide benefit to academics, practitioners, and stakeholders of college athletics
Autonomous Spacecraft Communication Interface for Load Planning
Ground-based controllers can remain in continuous communication with spacecraft in low Earth orbit (LEO) with near-instantaneous communication speeds. This permits near real-time control of all of the core spacecraft systems by ground personnel. However, as NASA missions move beyond LEO, light-time communication delay issues, such as time lag and low bandwidth, will prohibit this type of operation. As missions become more distant, autonomous control of manned spacecraft will be required. The focus of this paper is the power subsystem. For present missions, controllers on the ground develop a complete schedule of power usage for all spacecraft components. This paper presents work currently underway at NASA to develop an architecture for an autonomous spacecraft, and focuses on the development of communication between the Mission Manager and the Autonomous Power Controller. These two systems must work together in order to plan future load use and respond to unanticipated plan deviations. Using a nominal spacecraft architecture and prototype versions of these two key components, a number of simulations are run under a variety of operational conditions, enabling development of content and format of the messages necessary to achieve the desired goals. The goals include negotiation of a load schedule that meets the global requirements (contained in the Mission Manager) and local power system requirements (contained in the Autonomous Power Controller), and communication of off-plan disturbances that arise while executing a negotiated plan. The message content is developed in two steps: first, a set of rapid-prototyping "paper" simulations are preformed; then the resultant optimized messages are codified for computer communication for use in automated testing
Compact inline optical electron polarimeter
A compact optical electron polarimeter using a helium target is described. It offers a maximum fluorescence detection efficiency of ∼20 Hz/nA, which is an order of magnitude higher than that of earlier designs. With an argon target, this device is expected to have a polarimetric figure-of-merit of 270 Hz/nA. By relying on a magnetic field to guide a longitudinally spin-polarized electron beam, the present instrument employs fewer electrodes. It also uses a commercially available integrated photon counting module. These features allow it to occupy a smaller volume and make it easier to operate
Factors Influencing Muscular Strength and Endurance in Disadvantaged Children From Low-Income Families
International Journal of Exercise Science 9(3): 306-317, 2016. Examining the correlates of muscular strength and endurance in children from low-income families will provide evidence for interventions to improve these parameters. The purpose of this study was to determine the predictors and trends of muscular strength and endurance in at-risk school-aged children. The sample included 1,232 children (Mean age = 8.8 ± 1.6 years; 625 girls, 607 boys; 60% Hispanic) recruited from three U.S. low-income schools. Children performed health-related fitness testing and wore pedometers for one school week. A stratified random subsample (n = 533) also wore accelerometers to record sedentary behaviors, MVPA, and vigorous physical activity. Generalized linear mixed models were employed to calculate odds ratios (OR) for achieving FITNESSGRAM’s push-up and curl-up standards (met standard = HFZ) from various predictors and to determine odds of achievement across grade levels. A student who achieved the HFZ for VO2 Peak had an OR = 1.66 (p \u3c 0.001) for achieving the HFZ for pushups and an OR = 1.99 (p \u3c 0.01) for achieving the HFZ for curl-ups. Additionally, students whose vigorous physical activity was 1% higher had an OR = 3.25 (p \u3c 0.05) for achieving the HFZ for curl-ups. For cohorts of students separated by one grade level, the OR = 0.48 (p \u3c 0.01) for achieving the HFZ for pushups and OR = 0.71 (p \u3c 0.01) for achieving the HFZ for curl-ups. The results suggest that VO2 Peak, vigorous physical activity, and grade level are significant predictors of muscular strength and endurance in at-risk children
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