scholarly journals Cross-Lagged Panel Analyses of Reciprocal Effects of Social Isolation, Perceived Loneliness, and Solitary Activity

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 93-94
Author(s):  
Ke Li ◽  
Fengyan Tang
Keyword(s):  
Social Isolation ◽  
Early Stage ◽  
Living Arrangement ◽  
Social Contact ◽  
Summary Score ◽  
Reciprocal Relationship ◽  
Subjective Perception ◽  
Reciprocal Effects ◽  
Lagged Effects ◽  
Relationship Of

Abstract Social isolation and perceived loneliness are major issues as they may place older adults at greater risks for health problems. The objective status of social isolation and the subjective perception of loneliness may have distinct meanings, and their longitudinal reciprocal relationship remains unclear. The purposes of this study were to examine the reciprocal effects of social isolation and loneliness among U.S. adults aged 50 and above and to explore the moderating effect of solitary activities by using the data from three waves of the Health and Retirement Study (HRS) collected in the year 2008, 2012 and 2016. The index of social isolation was created by summing five commonly used indicators, including marital status, living arrangement, and three types of social contact. Loneliness was assessed by a summary score of 11 items. Solitary activities included 13 activities with limited or no social interaction. The results estimated by the cross-lagged effects model showed positive reciprocal relationship of social isolation and perceived loneliness across waves: respondents with a higher level of social isolation were predicted to have increased loneliness, and more perceived loneliness was significantly associated with a higher level of social isolation in the following waves. The results also indicated that solitary activity had a direct effect on decreasing loneliness. This study improves the understanding of reciprocal effects of social isolation and perceived loneliness over years and indicates that practice needs to address the issues of social isolation and perceived loneliness at the early stage and provide more opportunities of solitary activities.

scholarly journals Reduction Mechanism of Fine Hematite Ore Particles in Suspension

2021 ◽  
Author(s):  
Zhiyuan Chen ◽  
Christiaan Zeilstra ◽  
Jan van der Stel ◽  
Jilt Sietsma ◽  
Yongxiang Yang
Keyword(s):  
Particle Size ◽  
Temperature Drop ◽  
Reduction Rate ◽  
Reduction Process ◽  
Reciprocal Relationship ◽  
Drop Tube ◽  
Surface Nucleation ◽  
Order Of Magnitude ◽  
Relationship Of ◽  
Kinetics Of

AbstractIn order to understand the pre-reduction behaviour of fine hematite particles in the HIsarna process, change of morphology, phase and crystallography during the reduction were investigated in the high temperature drop tube furnace. Polycrystalline magnetite shell formed within 200 ms during the reduction. The grain size of the magnetite is in the order of magnitude of 10 µm. Lath magnetite was observed in the partly reduced samples. The grain boundary of magnetite was reduced to molten FeO firstly, and then the particle turned to be a droplet. The Johnson-Mehl-Avrami-Kolmogorov model is proposed to describe the kinetics of the reduction process. Both bulk and surface nucleation occurred during the reduction, which leads to the effect of size on the reduction rate in the nucleation and growth process. As a result, the reduction rate constant of hematite particles increases with the increasing particle size until 85 µm. It then decreases with a reciprocal relationship of the particle size above 85 µm.

scholarly journals Profiles of Loneliness and Social Isolation in Physically Active and Inactive Older Adults in Rural England

2021 ◽  
Vol 18 (8) ◽  
pp. 3971
Author(s):  
Jolanthe de Koning ◽  
Suzanne H. Richards ◽  
Grace E. R. Wood ◽  
Afroditi Stathi
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Social Isolation ◽  
Physical Environment ◽  
Vigorous Physical Activity ◽  
Social Contact ◽  
Physical Activity Behaviour ◽  
Rural Setting ◽  
Structured Interviews ◽  
Physically Active

Objective: Loneliness and social isolation are associated with higher risk of morbidity and mortality and physical inactivity in older age. This study explored the socioecological context in which both physically active and inactive older adults experience loneliness and/or social isolation in a UK rural setting. Design: A mixed-methods design employed semi structured interviews and accelerometer-measured moderate-to-vigorous physical activity (MVPA). Interviews explored the personal, social and environmental factors influencing engagement with physical activities, guided by an adapted-socioecological model of physical activity behaviour. Findings: Twenty-four older adults (MeanAge = 73 (5.8 SD); 12 women) were interviewed. Transcripts were thematically analysed and seven profiles of physical activity, social isolation and loneliness were identified. The high-MVPA group had established PA habits, reported several sources of social contact and evaluated their physical environment as activity friendly. The low MVPA group had diverse experiences of past engagement in social activities. Similar to the high MVPA, they reported a range of sources of social contact but they did not perceive the physical environment as activity friendly. Conclusions: Loneliness and/or social isolation was reported by both physically active and inactive older adults. There is wide diversity and complexity in types and intensity of PA, loneliness and social isolation profiles and personal, social and environmental contexts.

Substrate Stabilization: Genetically Controlled Reciprocal Relationship of Two Human Enzymes

Science ◽  
1970 ◽  
Vol 167 (3919) ◽  
pp. 887-889 ◽  
Author(s):  
M. L. Greene ◽  
J. A. Boyle ◽  
J. E. Seegmiller
Keyword(s):  
Reciprocal Relationship ◽  
Substrate Stabilization ◽  
Relationship Of

scholarly journals Grid Governance in China under the COVID-19 Outbreak: Changing Neighborhood Governance

2021 ◽  
Vol 13 (13) ◽  
pp. 7089
Author(s):  
Tianke Zhu ◽  
Xigang Zhu ◽  
Jian Jin
Keyword(s):  
State Government ◽  
Local Governance ◽  
The State ◽  
Reciprocal Relationship ◽  
Private Governance ◽  
Neighborhood Organizations ◽  
Housing Privatization ◽  
Epidemic Period ◽  
Neighborhood Governance ◽  
Relationship Of

Housing commodification seems to suggest that a process of a state is embracing private governance. However, private governance in Chinese neighborhoods is a two-way trajectory. This paper examined two types of housing neighborhoods, namely, a work-unit housing neighborhood and gated commodity housing to understand the changes in neighborhood governance. It is interesting to observe that during the Covid-19 epidemic period, the state government enhanced its presence and public trust in neighborhood governance by changing the former ways of self-governance. As a strategy for the state to return to local governance, the grid governance is the reconfiguration of administrative resources at a neighborhood level and professionalizes neighborhood organizations to ensure the capacities of the state to solve social crises and neighborhood governance. The potential side effects of changing neighborhood governance are that while the implementation of grid governance has improved internal connections among residents, the empowered neighborhood governments acting as the “state agent on the ground” leads to an estrangement between residents and private governance. The underdevelopment of neighborhood autonomy is not only due to the restriction of state government, but more importantly, the reciprocal relationship of state-led neighborhood governance in the context of housing privatization development in China.

TV or Not TV: Fat Is the Question

PEDIATRICS ◽  
1993 ◽  
Vol 91 (2) ◽  
pp. 499-501
Author(s):  
WILLIAM H. DIETZ ◽  
STEVEN L. GORTMAKER
Keyword(s):  
Physical Activity ◽  
Body Mass Index ◽  
Body Mass ◽  
Adolescent Girls ◽  
Television Viewing ◽  
Physical Activities ◽  
Reciprocal Relationship ◽  
Seventh Grade ◽  
Relationship Of

The manuscript entitled "Does television viewing increase obesity and reduce physical activity?" published by Robinson and coauthors in this issue of Pediatrics1 is a careful and well-written study of the effect of television viewing on adiposity and physical activity among sixth- and seventh-grade adolescent girls. In contrast to two other large studies of children,2,3 the authors failed to find a significant association between hours of television viewed and adiposity, measured by body mass index. Physical activity was weakly and inversely correlated to time spent viewing television. The latter observation is consistent with prior data which demonstrate a reciprocal relationship of fitness and television viewing,4 perhaps because television viewing displaces more vigorous physical activities.5

scholarly journals Reciprocal relationship of synovial fluid volume and Oxygen tension

1981 ◽  
Vol 24 (5) ◽  
pp. 701-705 ◽  
Author(s):  
Alan I. Richman ◽  
Eugene Y. Su ◽  
George Ho
Keyword(s):  
Synovial Fluid ◽  
Oxygen Tension ◽  
Fluid Volume ◽  
Reciprocal Relationship ◽  
Relationship Of

scholarly journals Relationship of Depression, Aging and Immune System During Covid-19 Pandemic: A Review

2021 ◽  
Vol 2 (3) ◽  
Author(s):  
Farah Iylia Binti Fauzi ◽  
Siti Fatimah Binti Salleh ◽  
Mohammad Shahadat Hossen
Keyword(s):  
Mental Health ◽  
Immune System ◽  
Elderly People ◽  
Social Isolation ◽  
Mental Health Problems ◽  
Preventive Measures ◽  
Coping Mechanisms ◽  
Depression And Anxiety ◽  
Relationship Of ◽  
The Relationship

COVID-19 is a highly contagious virus that first appeared in China in December 2019. It has affected over 157 million people and killed over 3.2 million. The paper reviews the function of the immune system for COVID-19 prevention, depression, and anxiety due to COVID-19 and their effects on the immune system and the relationship of aging with the immune system and depression and anxiety. It has been found that several elderly people lack the coping mechanisms required to deal with the stress caused by COVID-19. Hence, identifying the factors and mechanisms that lead to this resilience will aid in the development of preventive measures for certain elderly people and groups with more severe mental health problems. Additionally, it would be beneficial to understand how technology could be leveraged to accomplish this goal. During the pandemic, various steps such as social isolation, quarantine, and self-isolation are needed to be implemented properly to slow the spread of the virus. Meanwhile, to help halt the pandemic, everybody must be vaccinated as soon as possible until any bans on social gatherings and social isolation can be removed, allowing other sectors such as schooling, social activities, and life to resume normalcy.

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