Engagement with Online Fitness Videos on YouTube and Instagram during the COVID-19 Pandemic: A Longitudinal Study (Preprint)

2020 ◽  
Author(s):  
Wuyou Sui ◽  
Jonathan Rush ◽  
Ryan E. Rhodes
Keyword(s):  
Social Engagement ◽  
Multilevel Models ◽  
Effective Means ◽  
Cost Effective ◽  
Linear Change ◽  
Outdoor Spaces ◽  
Specialized Equipment ◽  
Secondary Objective ◽  
Day Of The Week

BACKGROUND The COVID-19 pandemic has dramatically changed the physical activity (PA) landscape through the closures of gyms, recreational facilities, schools, and many outdoor spaces. Physical distancing and stay-at-home public health guidelines have also reduced opportunity for PA. In turn, the popularity of online home workout and fitness videos, particularly those hosted on free video streaming platforms like YouTube and Instagram, has spiked during the pandemic. These online exercise videos offer viewers a convenient, accessible, and cost-effective means of engaging in PA, typically through regularly posted videos or discrete programs spread over a number of days. Notably, traditional PA and exercise programs often suffer from poor adherence and high dropout rates, despite many advantages over online workout programs (e.g., specialized equipment, real-time feedback, in-person social engagement). Thus, while there are clear advantages to these online fitness videos, their ability to maintain long-term engagement and adherence is unknown. OBJECTIVE This study explored patterns of engagement (i.e., for online fitness videos posted by channels since the declaration of COVID-19 over four months. A secondary objective was to examine potential moderators of engagement metrics. METHODS An environmental scan was used to identify eligible channels. Eligible channels were (i) freely available on YouTube or Instagram and (ii) posted daily or weekday series workouts OR offered quarantine-specific workout programs. Searches were conducted on June 1 and 4, 2020. Engagement metrics of views, likes, and comments were collected from videos posted between March 11 to June 26 or 30, 2020, inclusive. A series of multilevel modeling analyses were conducted to examine longitudinal changes in each of the three outcome variables (i.e., views, likes, and comments). RESULTS Ten channels were deemed eligible and included in analyses; six channels posted regularly, while the other four posted discrete workout programs. Multilevel models revealed that both views and likes significantly decreased across days. Visually, channels display the sharpest drop in engagement within the first week. Linear change estimate indicates that the number of views were initially declining by 24,700 per day, on average across all the channels. Channels that had more subscribers declined in their views, likes, and comments at a significantly faster rate compared to channels with fewer subscribers. The day of the week a video is posted, ‘virality’, and content of a video all appear to influence engagement. CONCLUSIONS Regardless of raw engagement metrics, each channel demonstrated peak engagement with the initial video followed by a decline in engagement with subsequent videos. As many countries continue to maintain restrictions on traditional PA facilities due to COVID-19, determining methods to improve engagement and adherence with online fitness videos becomes increasingly important.

The Effect of Process on Performance and Reliability in a One Step Silver-Glass Die Attach Adhesive

1991 ◽  
Vol 226 ◽  
Author(s):  
A.M. Conlon ◽  
C.P. Cameron ◽  
J.W. Lau
Keyword(s):  
High Reliability ◽  
Effective Means ◽  
Cost Effective ◽  
Electronic Components ◽  
Environmental Testing ◽  
Die Attach ◽  
Tensile Data ◽  
One Step ◽  
Temperature Aging

AbstractSilver-glass die attach adhesives provide a cost effective means of producing high reliability parts which can withstand the environmental testing required of electronic components. One step processing of these adhesives provides the additional advantages of increased throughput and processing flexibility compared to eutectically bonded assemblies.This paper describes the performance of a one step silver-glass die attach adhesive processed under various time and temperature conditions. The effect of peak firing temperature and dwell time on the ultimate tensile strength of the adhesive will be discussed. Tensile data from parts subjected to thermal shock, thermal cycle and high temperature aging will be presented as an indication of the material's long term reliability.

scholarly journals Which adolescents are well-suited to app-based mindfulness training? A randomized clinical trial and data-driven approach for personalized recommendations

2021 ◽  
Author(s):  
Christian A. Webb ◽  
Caroline M. Swords ◽  
Hannah Lawrence ◽  
Lori M. Hilt
Keyword(s):  
Predictive Model ◽  
Multilevel Models ◽  
Effective Means ◽  
Cost Effective ◽  
Mindfulness Training ◽  
Group Differences ◽  
Depression And Anxiety ◽  
Data Driven Approach ◽  
Ecological Momentary ◽  
Momentary Assessment

Objective: Rumination heightens risk for depression and anxiety, which increase substantially during adolescence. Smartphone apps offer a convenient and cost-effective means for adolescents to access mindfulness training, which may reduce rumination. Despite their increasing popularity, it is unclear which adolescents benefit from mindfulness apps.Methods: Adolescents (n = 152) with elevated trait rumination were randomly assigned to 3 weeks of app-based mindfulness training or a mood monitoring control. Multilevel models tested group differences in state rumination change, assessed via ecological momentary assessment. Baseline adolescent characteristics were submitted to elastic net regularization models to develop a “Personalized Advantage Index” indicating an individual’s expected outcome from the mindfulness app relative to the mood monitoring control. Finally, we translated a predictive model (developed in an external sample) for personalized recommendations of expected benefit from the mindfulness app.Results: Adolescents in the mindfulness app condition reported significantly greater reductions in rumination than adolescents in the control condition. Individuals predicted to have better outcomes from the mindfulness app relative to mood monitoring had significantly greater reductions in rumination if randomly assigned to the mindfulness condition. Between-condition differences in outcome were not significant for adolescents predicted to have better outcomes in the mood monitoring condition.Conclusions: Findings support the efficacy of a mindfulness app to reduce state rumination in adolescents, particularly among adolescents high in trait rumination. A predictive model is put forth, which could be used to objectively communicate expected mindfulness app outcomes to adolescents prior to engagement in app-based mindfulness training.

scholarly journals Effectiveness of Integrated Pest Management Dissemination Techniques: A Case Study of Potato Farmers in Carchi, Ecuador

2007 ◽  
Vol 39 (3) ◽  
pp. 765-780 ◽  
Author(s):  
Maria Mauceri ◽  
Jeffrey Alwang ◽  
George Norton ◽  
Victor Barrera
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Pesticide Exposure ◽  
Effective Means ◽  
Cost Effective ◽  
Production Costs ◽  
Farmer Field Schools ◽  
Chemical Inputs ◽  
Field Schools

Potato farmers in Ecuador rely on chemical inputs to manage pests and optimize yields. Integrated pest management techniques lower production costs, reduce pesticide exposure, and improve long-term agricultural sustainability. Public extension does not, however, exist in Ecuador, and cost-effective means of communicating complex messages to producers are needed. We analyze cost-effectiveness of alternative dissemination methods, including farmer field schools (FFS), field days, pamphlets, and word-of-mouth transmission. Field days and pamphlets have strong impacts on adoption, especially considering their low costs. FFS are effective, but expensive. Evidence also indicates significant diffusion from FFS to non-FFS farmers, indicating high complementarity across methods.

scholarly journals LONG TERM EXPERIENCE WITH SEAWALLS ON AN EXPOSED COAST

1988 ◽  
Vol 1 (21) ◽  
pp. 182
Author(s):  
Orville T. Magoon ◽  
Joan L. Pope ◽  
Robert L. Sloan ◽  
Donald D. Treadwell
Keyword(s):  
Pacific Ocean ◽  
Effective Means ◽  
Cost Effective ◽  
Design Parameters ◽  
Clear Understanding ◽  
Santa Cruz ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Long Term Experience

Appropriately designed, constructed, and maintained rubble mound seawalls are an efficient and cost-effective means of protecting erodible sections of exposed coastline. This conclusion is supported by more than 25 years of satisfactory seawall performance along the Pacific Ocean coast of Santa Cruz County, California, U.S.A. Important factors in satisfactory seawall performance include a clear understanding of the oceanographic and geologic design parameters, a vigorous inspection program during construction, and continued observation and maintenance of the structures.

Seismic Isolation: New Zealand Applications

1990 ◽  
Vol 6 (2) ◽  
pp. 203-222 ◽  
Author(s):  
G. R. McKay ◽  
H. E. Chapman ◽  
D. K. Kirkcaldie
Keyword(s):  
New Zealand ◽  
United States Of America ◽  
Seismic Isolation ◽  
Effective Means ◽  
Cost Effective ◽  
The United States ◽  
Isolation Systems ◽  
Seismic Isolation Systems ◽  
Earthquake Effects

Seismic isolation of structures has been applied in New Zealand since 1973. To date approximately 45 bridges, 3 large buildings and a few other structures have been protected with this technique. These include 40 bridges and 2 buildings designed by Works and Development Services Corporation (NZ) Ltd (WORKS). Numerous energy dissipating devices have been developed and tested by New Zealand researchers. Six of these designs have proved to be convenient and economical and have been incorporated in the seismic isolation systems of the structures built. Development work on seismic isolation devices is continuing in New Zealand and contact with specialists from other countries - in particular from Japan and the United States of America - is being maintained. Seismic isolation has been found to be a cost effective means of mitigating earthquake effects, particularly if the long term benefits of reduced seismic damage and disruption are taken into consideration.

scholarly journals Pipeline Bonded Joints Assembly and Operation Health Monitoring with Embedded FBG Sensors

2020 ◽  
Vol 2 (1) ◽  
pp. 5
Author(s):  
Thiago Destri Cabral ◽  
Antonio Carlos Zimmermann ◽  
Daniel Pedro Willemann ◽  
Armando Albertazzi Gonçalves, Jr.
Keyword(s):  
Oil And Gas ◽  
Adhesive Layer ◽  
Cost Effective ◽  
Offshore Platforms ◽  
Bonded Joints ◽  
Reinforced Plastics ◽  
Specialized Equipment ◽  
Fbg Sensors ◽  
Offshore Oil And Gas

Offshore oil and gas platforms present a harsh environment for their installed infrastructure, with pipelines that are subjected to both a corrosive atmosphere and transport of aggressive chemicals being the most critical. These conditions have prompted the industry to substitute metallic pipelines for composite counterparts, often made from fiber-reinforced plastics assembled with bonded joints. Various technologies have emerged in recent years to assess the health of these composite pipelines. In particular, robust speckle metrology techniques such as shearography, although not capable of long-term monitoring, have produced very satisfactory results. However, these inspection techniques require specialized equipment and trained personnel to be flown to offshore platforms, which can incur in non-trivial inspection costs. In this paper, we propose and demonstrate a robust and cost-effective approach to monitor pipeline bonded joints during assembly and operation using fiber Bragg grating (FBG) sensors embedded into the joints’ adhesive layer. This approach allows for informed decisions on when to perform targeted in-depth inspections (e.g., with shearography) based on both real-time and long-term feedback of the FBG sensors data, resulting in lower monitoring costs, a severe increase in monitoring uptime (up to full uptime), and increased operational security.

Physical and Psychological Benefits of Written Emotional Expression

2015 ◽  
Vol 20 (4) ◽  
pp. 242-251 ◽  
Author(s):  
Éva Kállay
Keyword(s):  
Mental Health ◽  
Expressive Writing ◽  
Mental Health Problems ◽  
Cost Effective ◽  
Health Problems ◽  
Future Research ◽  
Psychological Benefits ◽  
Cost Effective Treatment ◽  
Meta Analyses

Abstract. The last several decades have witnessed a substantial increase in the number of individuals suffering from both diagnosable and subsyndromal mental health problems. Consequently, the development of cost-effective treatment methods, accessible to large populations suffering from different forms of mental health problems, became imperative. A very promising intervention is the method of expressive writing (EW), which may be used in both clinically diagnosable cases and subthreshold symptomatology. This method, in which people express their feelings and thoughts related to stressful situations in writing, has been found to improve participants’ long-term psychological, physiological, behavioral, and social functioning. Based on a thorough analysis and synthesis of the published literature (also including most recent meta-analyses), the present paper presents the expressive writing method, its short- and long-term, intra-and interpersonal effects, different situations and conditions in which it has been proven to be effective, the most important mechanisms implied in the process of recovery, advantages, disadvantages, and possible pitfalls of the method, as well as variants of the original technique and future research directions.

Antithrombotic Therapy for DVT/PE

1997 ◽  
Vol 17 (03) ◽  
pp. 161-162
Author(s):  
Thomas Hyers
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight Heparin ◽  
Oral Anticoagulants ◽  
Cost Effective ◽  
Therapeutic Agents ◽  
Great Promise ◽  
Term Therapy ◽  
Low Molecular Weight ◽  
Long Term Therapy

SummaryProblems with unfractionated heparin as an antithrombotic have led to the development of new therapeutic agents. Of these, low molecular weight heparin shows great promise and has led to out-patient therapy of DVT/PE in selected patients. Oral anticoagulants remain the choice for long-term therapy. More cost-effective ways to give oral anticoagulants are needed.

Strategic planning in grassland farming: Principles andapplications

1997 ◽  
pp. 191-197
Author(s):  
W.J. Parker ◽  
N.M. Shadbolt ◽  
D.I. Gray
Keyword(s):  
Strategic Planning ◽  
Performance Indicators ◽  
Cost Effective ◽  
Key Performance Indicators ◽  
Strategic Plans ◽  
Effective Manner ◽  
Farm Business ◽  
Pastoral Farming ◽  
Financial Environment

Three levels of planning can be distinguished in grassland farming: strategic, tactical and operational. The purpose of strategic planning is to achieve a sustainable long-term fit of the farm business with its physical, social and financial environment. In pastoral farming, this essentially means developing plans that maximise and best match pasture growth with animal demand, while generating sufficient income to maintain or enhance farm resources and improvements, and attain personal and financial goals. Strategic plans relate to the whole farm business and are focused on the means to achieve future needs. They should be routinely (at least annually) reviewed and monitored for effectiveness through key performance indicators (e.g., Economic Farm Surplus) that enable progress toward goals to be measured in a timely and cost-effective manner. Failure to link strategy with control is likely to result in unfulfilled plans. Keywords: management, performance

Parallel Computing for Tire Simulations

2011 ◽  
Vol 39 (3) ◽  
pp. 193-209 ◽  
Author(s):  
H. Surendranath ◽  
M. Dunbar
Keyword(s):  
High Performance ◽  
Effective Means ◽  
Cost Effective ◽  
Turnaround Time ◽  
Careful Consideration ◽  
Rolling Contact ◽  
Element Analysis ◽  
Parallel Solvers ◽  
Design Changes ◽  
Highly Nonlinear

Abstract Over the last few decades, finite element analysis has become an integral part of the overall tire design process. Engineers need to perform a number of different simulations to evaluate new designs and study the effect of proposed design changes. However, tires pose formidable simulation challenges due to the presence of highly nonlinear rubber compounds, embedded reinforcements, complex tread geometries, rolling contact, and large deformations. Accurate simulation requires careful consideration of these factors, resulting in the extensive turnaround time, often times prolonging the design cycle. Therefore, it is extremely critical to explore means to reduce the turnaround time while producing reliable results. Compute clusters have recently become a cost effective means to perform high performance computing (HPC). Distributed memory parallel solvers designed to take advantage of compute clusters have become increasingly popular. In this paper, we examine the use of HPC for various tire simulations and demonstrate how it can significantly reduce simulation turnaround time. Abaqus/Standard is used for routine tire simulations like footprint and steady state rolling. Abaqus/Explicit is used for transient rolling and hydroplaning simulations. The run times and scaling data corresponding to models of various sizes and complexity are presented.

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