scholarly journals The Stability of Influenza Vaccination Behavior Over Time: A Longitudinal Analysis of Individuals Across 8 Years

2020 ◽  
Vol 54 (10) ◽  
pp. 783-793
Author(s):  
Matthew M Walsh ◽  
Andrew M Parker ◽  
Raffaele Vardavas ◽  
Sarah A Nowak ◽  
David P Kennedy ◽  
...  
Keyword(s):  
Influenza Vaccination ◽  
Seasonal Influenza ◽  
Vaccination Behavior ◽  
Vaccination History ◽  
The Usa ◽  
The Stability ◽  
The Mathematical Model ◽  
The Relationship ◽  
Weak Tendency ◽  
Do So

Abstract Background Seasonal influenza vaccination is an important behavior with significant individual and public health consequences, yet fewer than half of individuals in the USA are vaccinated annually. To promote vaccination adherence, it is important to understand the factors that affect vaccination behavior. Purpose In this research, we focused on one such factor, an individual’s vaccination history. We gathered longitudinal data to track and understand the relationship between an individual’s vaccination history and their current behaviors. Methods U.S. adults completed multiple surveys over an 8 year period, which asked about whether they had received the influenza vaccination during the previous flu season. We analyzed the data to determine the strength of the relationship between vaccination decisions across single-year and multiyear intervals. Additionally, we fitted two mathematical models to the data to determine whether individuals were better characterized as having a stable propensity to vaccinate or a stable propensity to repeat their previous decisions. Results Individuals exhibited highly consistent behavior across adjacent years, yet, across the complete extent of the longitudinal study, they were far more likely to repeat the earlier decision to vaccinate. Surprisingly, the results of the mathematical model suggest that individuals are better characterized as having a stable propensity to repeat their previous decisions rather than a stable propensity to vaccinate per se. Although most individuals had an extremely strong tendency to repeat the previous decision, some had a far weaker propensity to do so. Conclusions This suggests that interventions intended to increase vaccination uptake might be most impactful for those individuals with only a weak tendency to vaccinate or not to vaccinate.

scholarly journals How are sociodemographic factors and risk preferences associated with seasonal influenza vaccination behavior under the COVID-19 pandemic?

2021 ◽  
Author(s):  
TAKAHIRO MORI ◽  
Tomohisa Nagata ◽  
Kazunori Ikegami ◽  
Ayako Hino ◽  
Seiichiro Tateishi ◽  
...  
Keyword(s):  
Influenza Vaccination ◽  
Seasonal Influenza ◽  
Risk Preference ◽  
Sociodemographic Factors ◽  
Internet Survey ◽  
Vaccine Hesitancy ◽  
Seasonal Influenza Vaccination ◽  
Vaccination Rates ◽  
Vaccination Behavior ◽  
The Relationship

Background: Vaccine hesitancy is an issue for vaccines required for herd immunity. Although various factors such as sociodemographics can affect vaccine hesitancy, the research results differ and it is unclear whether these differences depend on the subjects or the situation, such as the type of infection or vaccine. Therefore, we investigated the relationship between seasonal influenza vaccination behavior and sociodemographic factors under the COVID-19 pandemic. In addition, we analyzed the relationship between individual factors of risk preference and seasonal influenza vaccination on the premise that there is a difference in the association between efficacy and the risk of side effects of the two vaccines. Methods: A cross-sectional study was conducted on workers aged from 20-65 years on December 22-25, 2020, using data from an Internet survey. We set the presence or absence of 2020/2021 seasonal influenza vaccination as the dependent variable, and each aspect of sociodemographic factors and risk preference as independent variables. We performed a multilevel logistic regression analysis nested by residence. Results: In total, 26,637 respondents (13,600 men, 13,037 women) participated. Significantly more women than men were vaccinated. Both men and women had higher vaccination rates if married, highly educated, with high income, and with underlying disease. Men aged 60-65 had a significantly higher vaccination rate than those aged 20-29, while women aged 40-49 and 50-59 had a significantly lower rate than those aged 20-29. These results differed from those of a previous study on the vaccination intentions of the same subjects for COVID-19. Those with low risk preference had higher vaccination rates than those with high risk preference. Conclusions: Our results suggested that the effect of sociodemographic factors on vaccine hesitancy depends on the situation affecting efficacy of the vaccine and the perception of vaccination risk.

Walking Stability Analysis of Multi-Legged Crablike Robot over Slope

2013 ◽  
Vol 572 ◽  
pp. 636-639
Author(s):  
Xi Chen ◽  
Gang Wang
Keyword(s):  
Mathematical Model ◽  
Stability Analysis ◽  
Stability Criterion ◽  
Stability Margin ◽  
Static Stability ◽  
Matlab Simulation ◽  
And Performance ◽  
The Stability ◽  
The Mathematical Model ◽  
The Relationship

This paper deals with the walking stability analysis of a multi-legged crablike robot over slope using normalized energy stability margin (NESM) method in order to develop a common stabilization description method and achieve robust locomotion for the robot over rough terrains. The robot is simplified with its static stability being described by NESM. The mathematical model of static stability margin is built so as to carry out the simulation of walking stability over slope for the crablike robot that walks in double tetrapod gait. As a consequence, the relationship between stability margin and the height of the robots centroid, as well as its inclination relative to the ground is calculated by the stability criterion. The success and performance of the stability criterion proposed is verified through MATLAB simulation and real-world experiments using multi-legged crablike robot.

Research on the Mathematical Model for the Price Regulation of Power Demand-Side

2011 ◽  
Vol 189-193 ◽  
pp. 1218-1221
Author(s):  
Xiao Hong Zhang
Keyword(s):  
Mathematical Model ◽  
Energy Demand ◽  
Price Regulation ◽  
Power Demand ◽  
Demand Side ◽  
Power Resources ◽  
Rational Allocation ◽  
The Usa ◽  
The Mathematical Model ◽  
The Relationship

Power Demand-side Management (DSM) originated in the USA and was introduced into China later. As China's rapid economic development, social electric power energy demand is increasing, therefore, strengthen DSM, using reasonable price regulation and guide consumers the rational allocation of electricity methods and structure, so that we can achieve efficient use of power resources. From the perspective of electricity consumers and suppliers, this paper analyzed the relationship between them by constructing mathematical model, expected to provide some theoretical basis and practical guidance for the practice of government and power companies.

Influence of circumferential annular grooving design of impeller on suspended fluid force of axial flow blood pump

2022 ◽  
pp. 039139882110649
Author(s):  
Liang Wang ◽  
Zhong Yun ◽  
Xiaoyan Tang ◽  
Chuang Xiang
Keyword(s):  
Axial Flow ◽  
Groove Depth ◽  
Blood Pump ◽  
Suspension Stability ◽  
Impeller Blade ◽  
Stable Suspension ◽  
Axial Flow Blood Pump ◽  
The Stability ◽  
The Mathematical Model ◽  
The Relationship

Aiming at insufficient suspension force on the impeller when the hydraulic suspension axial flow blood pump is start at low speed, the impeller suspension stability is poor, and can’t quickly enter the suspended working state. By establishing the mathematical model of the suspension force on the impeller, then the influence of the circumferential groove depth of the impeller on the suspension force is analyzed, and the annular groove depth on the impeller blade in the direction of fluid inlet and outlet was determined as (0.26, 0.02 mm). When the blood pump starts, there is an eccentricity between the impeller and the pump tube, the relationship between the suspension force and the speed of the impeller under different eccentricities is analyzed. Combined with the prototype experiment, the circumferential annular grooving design of the impeller can make the blood pump rotate at about 3500 rpm into the suspension state, when the impeller is at 8000 rpm, the impeller can basically achieve stable suspension at the eccentricity of 0.1 mm in the gravity direction, indicating that the reasonable circumferential annular grooving design of the impeller can effectively improve the suspension hydraulic force of the impeller and improve the stability of the hydraulic suspension axial flow blood pump.

Of Frames and Cultures - A Cross-Cultural Comparison of TV Newscasts

2006 ◽  
Vol 18 (4) ◽  
pp. 160-173 ◽  
Author(s):  
Maria Senokozlieva ◽  
Oliver Fischer ◽  
Gary Bente ◽  
Nicole Krämer
Keyword(s):  
Content Analysis ◽  
Arab World ◽  
Methodological Approach ◽  
Cross Cultural ◽  
Cultural Comparison ◽  
Explorative Study ◽  
Cross Cultural Comparison ◽  
Tv News ◽  
The Usa ◽  
The Relationship

Abstract. TV news are essentially cultural phenomena. Previous research suggests that the often-overlooked formal and implicit characteristics of newscasts may be systematically related to culture-specific characteristics. Investigating these characteristics by means of a frame-by-frame content analysis is identified as a particularly promising methodological approach. To examine the relationship between culture and selected formal characteristics of newscasts, we present an explorative study that compares material from the USA, the Arab world, and Germany. Results indicate that there are many significant differences, some of which are in line with expectations derived from cultural specifics. Specifically, we argue that the number of persons presented as well as the context in which they are presented can be interpreted as indicators of Individualism/Collectivism. The conclusions underline the validity of the chosen methodological approach, but also demonstrate the need for more comprehensive and theory-driven category schemes.

An Experimental Investigation on Thermal Conductivity and Viscosity of Graphene doped CNTs /TiO2 Nanofluid

2020 ◽  
Vol 17 (3) ◽  
Author(s):  
A.M. Zetty Akhtar ◽  
M.M. Rahman ◽  
K. Kadirgama ◽  
M.A. Maleque
Keyword(s):  
Thermal Conductivity ◽  
Zeta Potential ◽  
Base Fluid ◽  
Minimum Quantity Lubrication ◽  
Cutting Fluid ◽  
Cutting Zone ◽  
Observation Method ◽  
The Stability ◽  
The Relationship ◽  
Zeta Potential Analysis

This paper presents the findings of the stability, thermal conductivity and viscosity of CNTs (doped with 10 wt% graphene)- TiO2 hybrid nanofluids under various concentrations. While the usage of cutting fluid in machining operation is necessary for removing the heat generated at the cutting zone, the excessive use of it could lead to environmental and health issue to the operators. Therefore, the minimum quantity lubrication (MQL) to replace the conventional flooding was introduced. The MQL method minimises the usage of cutting fluid as a step to achieve a cleaner environment and sustainable machining. However, the low thermal conductivity of the base fluid in the MQL system caused the insufficient removal of heat generated in the cutting zone. Addition of nanoparticles to the base fluid was then introduced to enhance the performance of cutting fluids. The ethylene glycol used as the base fluid, titanium dioxide (TiO2) and carbon nanotubes (CNTs) nanoparticle mixed to produce nanofluids with concentrations of 0.02 to 0.1 wt.% with an interval of 0.02 wt%. The mixing ratio of TiO2: CNTs was 90:10 and ratio of SDBS (surfactant): CNTs was 10:1. The stability of nanofluid checked using observation method and zeta potential analysis. The thermal conductivity and viscosity of suspension were measured at a temperature range between 30˚C to 70˚C (with increment of 10˚C) to determine the relationship between concentration and temperature on nanofluid’s thermal physical properties. Based on the results obtained, zeta potential value for nanofluid range from -50 to -70 mV indicates a good stability of the suspension. Thermal conductivity of nanofluid increases as an increase of temperature and enhancement ratio is within the range of 1.51 to 4.53 compared to the base fluid. Meanwhile, the viscosity of nanofluid shows decrements with an increase of the temperature remarks significant advantage in pumping power. The developed nanofluid in this study found to be stable with enhanced thermal conductivity and decrease in viscosity, which at once make it possible to be use as nanolubricant in machining operation.

Home, Sweet Home: Negotiating Intimacy in Brazilian Elitist Closed Condominiums

2020 ◽  
Vol 9 (1) ◽  
pp. 374-395
Author(s):  
Rafael Ignacio Estrada Mejia ◽  
Carla Guerrón Guerron Montero
Keyword(s):  
Collective Mode ◽  
Living Arrangement ◽  
Public Life ◽  
Ethnographic Research ◽  
Social Distinction ◽  
History Of ◽  
Collective Production ◽  
The Relationship ◽  
Do So

This article aims to decrease the cultural invisibility of the wealthy by exploring the Brazilian emergent elites and their preferred living arrangement: elitist closed condominiums (BECCs) from a micropolitical perspective.  We answer the question: What is the relationship between intimacy and subjectivity that is produced in the collective mode of existence of BECCs? To do so, we trace the history of the elite home, from the master’s house (casa grande) to contemporary closed condominiums. Following, we discuss the features of closed condominiums as spaces of segregation, fragmentation and social distinction, characterized by minimal public life and an internalized sociability. Finally, based on ethnographic research conducted in the mid-size city of Londrina (state of Paraná) between 2015 and 2017, we concentrate on four members of the emergent elite who live in BECCs, addressing their collective production of subjectivity. 

A FORECAST OF PRODUCTIVE LONGEVITY OF HOLSTEIN COWS BY INDIRECT SIGNS

2020 ◽  
Author(s):  
З.С. САНОВА
Keyword(s):  
Correlation Coefficient ◽  
Aging Process ◽  
Direct Relationship ◽  
Stability Index ◽  
Age At First Calving ◽  
Group I ◽  
Predicted Values ◽  
The Stability ◽  
Relationship Of ◽  
The Relationship

В статье представлены материалы о взаимосвязи продолжительности продуктивного использования коров с характеристикой устойчивости к деградации, с возрастом отела и удоем. В исследованной, разнородной по происхождению, группе животных для прогноза продуктивного периода коров, обусловленного устойчивостью к деградации и возрастом первого отела, пригодно уравнение регрессии, аргументами в котором являются индекс устойчивости, возраст первого отела в первой и второй степенях. Коэффициент корреляции межу предсказанными значениями продуктивного периода и его фактическими величинами в I группе составляет 0,502, во II - 0,604. При этом крайние варианты прогнозируются со статистическими ошибками 5 мес при оценке индекса устойчивости по 2 лактациям и 4,1 мес по 3, а средние варианты, соответственно, 1,6 и 1,51 мес. Индекс устойчивости к процессу старения является важной характеристикой биологических особенностей коров, определяющий их продуктивное долголетие. Его оценка по первым 2 и 3 лактациям имеет прямолинейную связь с продуктивным периодом (r=0,4109 и r=0,5270), соответственно. Зависимость продуктивного периода от возраста первого отела криволинейная — с увеличением возраста первого отела сокращается срок продуктивного использования, при возрасте первого отела более 1400 дней срок продуктивного использования колеблется от 1,33 до 1,41 лактации. Коэффициент корреляции между этими характеристиками коров составляет - 0,2164 в I и - 0,2620 во II группах. The article presents materials about the relationship of the duration of productive use of cows with the characteristic of resistance to degradation, with the age of calving and milk yield. In the studied group of animals, which is heterogeneous in origin, the regression equation is suitable for predicting the productive period of cows due to resistance to degradation and the age of the first calving, the arguments of which are the stability index, the age of the first calving in the first and second degrees. The correlation coefficient between the predicted values of the productive period and its actual values in group I is 0.502, in group II - 0.604. At the same time, the extreme variants are predicted with statistical errors of 5 months when evaluating the stability index for 2 lactations and 4.1 months for 3, and the average variants, respectively, are 1.6 and 1.51 months. The index of resistance to the aging process is an important characteristic of the biological characteristics of cows, which determines their productive longevity. Its estimate for the first 2 and 3 lactations has a direct relationship with the productive period (r=0.4109 and r=0.5270), respectively. The dependence of the productive period age at first calving curvilinear with increasing age at first calving reduces the time to productive use, while age at first calving of more than 1400 days, the period of productive use ranges from 1.33 to 1.41 lactation. The correlation coefficient between these characteristics of cows is-0.2164 in I and-0.2620 in II groups.

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