The Southern California Postrotary Nystagmus Test: Development of a Revised Procedure for Use with Preschool Children

1983 ◽  
Vol 3 (2) ◽  
pp. 93-103
Author(s):  
Kathleen S. Kennedy
Keyword(s):  
Preschool Children ◽  
Pilot Study ◽  
Correlation Coefficient ◽  
Southern California ◽  
Standard Test ◽  
Test Procedures ◽  
Trunk Control ◽  
Pearson Product Moment Correlation ◽  
Neural Processes ◽  
Head And Trunk Control

A pilot study was conducted to compare performances of 3-year-old children with 5- and 6-year-olds on the standardized Southern California Postrotary Nystagmus Test (SCPNT) and a revised version of this instrument. Standard test procedures were modified to correct for the variable of head and trunk control in 3-year-olds. The subjects were 16 3-year-olds and six 5- and 6-year-olds in metropolitan Cincinnati, Ohio. Subjects were administered the standardized and revised SCPNT in counterbalanced order approximately 1 hour apart. Data were analyzed using the Pearson product-moment correlation The correlation coefficient for total scores on the two tests for 5- and 6-year-olds was .88. This coefficient was found to be significant (p< 05), providing evidence for validity of the revised SCPNT. The correlation coefficient for the 3-year-olds was .42, which was not found to be significant (p< 05). Results suggested that for 3-year-olds, different neural processes were being tapped by the two tests. Recommendations for further research are discussed.

Analysis of Stresses and Strains in Packed Stuffing-Boxes

2014 ◽  
Author(s):  
Mehdi Kazeminia ◽  
Abdel-Hakim Bouzid
Keyword(s):  
Design Procedure ◽  
Standard Test ◽  
Packing Material ◽  
Test Procedures ◽  
Analytical Methodology ◽  
Packing Materials ◽  
Standard Design ◽  
Packing Rings ◽  
Leak Tightness ◽  
Side Walls

Packed stuffing-boxes are mechanical sealing systems that are extensively used in pressurized valves and pumps. Yet there is no standard design procedure that could be used to verify their mechanical integrity and leak tightness. It is only recently that standard test procedures to qualify the packing material have been suggested for adoption in both North America and Europe. While the packing contact stress with the side walls is predictable using existing models there is no analytical methodology to verify the stresses and strains in the stuffing-box housing. This paper presents an analytical model that analyzes the stresses and strains of all the stuffing box components including the packing rings. The developed model will be validated both numerically using FEM and experimentally on an instrumented packed stuffing box rig that is specially designed to test the mechanical and leakage performance of different packing materials.

scholarly journals Towards Standardising SHPB Testing - A Round Robin Exercise

2018 ◽  
Vol 183 ◽  
pp. 02027
Author(s):  
Reuben Govender ◽  
Muhammad Kariem ◽  
Dong Ruan ◽  
Rafael Santiago ◽  
Dong Wei Shu ◽  
...  
Keyword(s):  
Split Hopkinson Pressure Bar ◽  
Pure Copper ◽  
Round Robin ◽  
Standard Test ◽  
Test Method ◽  
Hopkinson Pressure Bar ◽  
Test Procedures ◽  
Draft Standard ◽  
Shpb Test ◽  
Pressure Bar

The Split Hopkinson Pressure Bar (SHPB) test, while widely utilised for high strain rate tests, has yet to be standardised. As an exploratory step towards developing a standard test method or protocol, a Round Robin test series has been conducted between four institutions: (i) Swinburne University of Technology, Australia (ii) University of São Paulo, Brazil, (iii) University of Cape Town, South African and (iv) Nanyang Technological University, Singapore. Each institution prepared specimens from a metallic material, and provided batches of specimens from their chosen material to the other institutions. The materials utilised in this round of testing were commercially pure copper and aluminium, magnesium alloy and stainless steel (316 grade). The intent of the first exercise is to establish the consistency of SHPB test results on nominally identical specimens at comparable elevated strain rates, conducted by different laboratories following notionally similar test procedures with some freedom in data processing. This paper presents and compares the results of the first batch of tests for copper, identifying variations between results from different laboratories. The variation between different laboratories’ results for copper is suffciently small that there is confidence in the potential to develop a draft standard in future.

scholarly journals THE CORRELATION BETWEEN MOTIVATION BEHAVIOUR AND SPEAKING ABILITY

2019 ◽  
Vol 1 (2) ◽  
pp. 115
Author(s):  
Diki Maulana ◽  
Widya Sri Wahyuni ◽  
Detya Siregar
Keyword(s):  
Qualitative Research ◽  
Correlation Coefficient ◽  
Research Design ◽  
Story Telling ◽  
Weak Correlation ◽  
Pearson Product Moment Correlation ◽  
Speaking Test ◽  
English Students

This researchis aboutthe correlation between motivation behaviour and spekaing abilityat English Students Association. Hence, this research is aimed to find out whether or not there is a significant correlation between motivation behaviour and speaking ability at English Students Association. This research used correlation research design and qualitative research. The instrument is motivation test using questionnaire and speaking test by story telling. The population of this research is English Students Association of IKIP Siliwangi and the sample is 30 students. The data o this research is analysed using pearson product  moment correlation coefficient. The degree of correlation between two variables was low with a correlation coefficient of 0.045. the result showed that there was a weak correlation between motivation behaviour and speaking ability at English Students Association.

scholarly journals Understanding the influence of 24-hour movement behaviours on the health and development of preschool children from low-income South African settings: the SUNRISE pilot study

2020 ◽  
Vol 32 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Catherine Draper ◽  
Simone A Tomaz ◽  
Caylee J Cook ◽  
Sasha S Jugdav ◽  
Candice Ramsammy ◽  
...  
Keyword(s):  
Physical Activity ◽  
Preschool Children ◽  
Pilot Study ◽  
Sedentary Behaviour ◽  
South African ◽  
Motor Skills ◽  
Low Income ◽  
Screen Time ◽  
Early Years ◽  
Gross Motor

Background: The International Study of Movement Behaviours in the Early Years, SUNRISE, was initiated to assess the extent to which young children meet movement behaviour guidelines (physical activity, sedentary behaviour, screen time, sleep). Objective: The South African SUNRISE pilot study assessed movement behaviours in preschool children from two low-income settings, and associations between these movement behaviours, adiposity, motor skills and executive function (EF). Methods: Preschool child/parent pairs (n = 89) were recruited from preschools in urban Soweto and rural Sweetwaters. Height and weight were measured to assess adiposity. Physical activity was assessed using accelerometers while sedentary behaviour, screen time and sleep were assessed via parent report. Fine and gross motor development were measured using the Ages and Stages Questionnaire-3, and EF was assessed using the Early Years Toolbox. Results: The proportion of children meeting the physical activity guideline was 84% , 66% met the sleep guideline ,48% met the screen time guideline , and 26% met all three guidelines. Rural children were more active, but spent more time on screens compared to urban children. Most children were on track for gross (96%) and fine motor (73%) development, and mean EF scores were in the expected range for all EF measures. EF was negatively associated with screen time, and gross motor skills were positively associated with physical activity. Conclusion: The South African SUNRISE study contributes to the growing literature on 24-hour movement behaviours in SA preschool children, and highlights that these behaviours require attention in this age group.

scholarly journals The Investigation Effects of Sample Pilot Study Program on Postur of Preschool Children

2012 ◽  
Vol 46 ◽  
pp. 2806-2810
Author(s):  
Fatma Celik Kayapinar ◽  
Sami Mengutay ◽  
Selda Uzun
Keyword(s):  
Preschool Children ◽  
Pilot Study ◽  
Study Program

Policies and Practices to Promote Physical Activity

2021 ◽  
pp. 306-321
Author(s):  
Linda Saraiva ◽  
Fernando Santos ◽  
Ana Ferreira ◽  
César Sá
Keyword(s):  
Physical Activity ◽  
Preschool Children ◽  
Pilot Study ◽  
Motor Development ◽  
Preschool Education ◽  
Policy Assessment ◽  
Program Staff ◽  
Observation Instrument ◽  
Children’S Physical Activity

This chapter presents a pilot study that sought to examine the practices and policies that can encourage children's physical activity in preschool settings located at Viana do Castelo, Portugal. The Environment and Policy Assessment and Observation instrument was used to measure the quality of the physical activity environment. The findings show that preschool settings present multiple limitations that may hinder children's physical activity and motor development. It should also be noted that policies are practically non-existent as there is a clear absence of physical activity content within the guiding documents in preschool education contexts. Further, there were no education opportunities provided to program staff. It is paramount to engage policymakers and other stakeholders in discussions that provide quality environments to encourage physical activity among preschool children.

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