scholarly journals Five Years of Comparison Between Euclidian Plane Geometry and Spherical Geometry in Primary Schools: An Experimental Study

2021 ◽  
Vol 9 (4) ◽  
pp. 230-243
Author(s):  
Alessandro Gambini
Keyword(s):  
Experimental Study ◽  
Primary Schools ◽  
Spherical Geometry ◽  
Plane Geometry

scholarly journals Effect of a school-based intervention in eating habits among school children:quasi experimental study

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
A Ben Cheikh ◽  
J Maatoug ◽  
R Ghammam ◽  
F Chouikha ◽  
A Mallat ◽  
...  
Keyword(s):  
Experimental Study ◽  
Primary Schools ◽  
Eating Habits ◽  
Intervention Group ◽  
Public Health Problem ◽  
Overweight And Obesity ◽  
Post Intervention ◽  
School Policies ◽  
Effective School ◽  
Healthy Environment

Abstract Background Childhood obesity has become a public health problem. Worldwide, the prevalence of overweight and obesity in children has increased dramatically especially in developing countries. The present study aimed to assess whether six months intervention program with parents' implication in primary schools is able to decrease morning snack consumption among children aged 6 to 12 years. Methods We carried out a quasi experimental study with two groups of schoolchildren in the region of Sousse (Tunisia) from 2015 to 2016. One primary school in each group was selected. In each school, we randomly selected a sample size of schoolchildren and their parents. The intervention was based on healthy eating habits promotion. Results The consumption of morning snacks the day before data collection, reported by children, decreased significantly in post-intervention in both intervention and control groups. The decrease of consumption of morning snacks was significantly higher in intervention group (p = 0.009). According to parents, the proportion of children who had the habit of eating morning snack decreased significantly from pre to post-intervention in intervention group (p < 0.001). Conclusions A healthy environment should be created through effective school policies to prevent obesity. Key messages The consumption of morning snacks reported by children, decreased significantly in post-intervention. A healthy environment should be created through effective school policies to prevent obesity.

Lines as “Foci” for Conic Sections

2019 ◽  
Vol 112 (4) ◽  
pp. 312-316
Author(s):  
Wayne Nirode
Keyword(s):  
Spherical Geometry ◽  
Geometric Object ◽  
Plane Geometry ◽  
Conic Sections ◽  
Geometric Objects ◽  
Definition Of ◽  
Taxicab Geometry

One of my goals, as a geometry teacher, is for my students to develop a deep and flexible understanding of the written definition of a geometric object and the corresponding prototypical diagram. Providing students with opportunities to explore analogous problems is an ideal way to help foster this understanding. Two ways to do this is either to change the surface from a plane to a sphere or change the metric from Pythagorean distance to taxicab distance (where distance is defined as the sum of the horizontal and vertical components between two points). Using a different surface or metric can have dramatic effects on the appearance of geometric objects. For example, in spherical geometry, triangles that are impossible in plane geometry (such as triangles with three right or three obtuse angles) are now possible. In taxicab geometry, a circle now looks like a Euclidean square that has been rotated 45 degrees.

Effectiveness of School-Based Smoking Prevention Education Program (SPEP) Among Nonsmoking Adolescents: A Quasi-Experimental Study

2019 ◽  
pp. 105984051987164 ◽  
Author(s):  
Mohd Said Nurumal ◽  
Siti Hajar Mohd Zain ◽  
Mohamad Haniki Nik Mohamed ◽  
Shefaly Shorey
Keyword(s):  
Experimental Study ◽  
Education Program ◽  
Primary Schools ◽  
Intervention Group ◽  
Smoking Prevention ◽  
Control Group ◽  
Prevention Education ◽  
Quasi Experimental ◽  
Exhaled Carbon Monoxide ◽  
And Control

Preventing smoking among adolescents is critical. This study evaluated the effectiveness of the Smoking Prevention Education Program among nonsmoking adolescents. A quasi-experimental study design was used. Data were collected from Year 5 students ( n = 140) from four government primary schools in the Kuantan and Pahang districts of Malaysia. The participating schools were randomly assigned into the intervention and control groups. Questionnaires and exhaled carbon monoxide (CO) levels were used to collect data at the baseline and at 3 months postintervention. At 3 months postintervention, the percentage of nonsmokers remained 100% in the intervention group, while 2.9% of the participants in the control group reported to have smoked in past 7 days. Comparatively, the mean scores of attitudes, subjective norms, and nonsmoking intentions of the intervention group improved significantly. The intervention was effective in preventing smoking initiations among Malaysian adolescents; however, further evaluation of this intervention is needed among varied populations.

scholarly journals New Computational Approaches to Determining the Astronomical Vessel Position Based on the Sumner Line

2015 ◽  
Vol 21 (4) ◽  
pp. 3-11
Author(s):  
Chih-Li Chen ◽  
Tien-Pen Hsu ◽  
Guo-Yu Weng
Keyword(s):  
Spherical Geometry ◽  
Iteration Scheme ◽  
Great Circle ◽  
The Other ◽  
Plane Geometry ◽  
Trial And Error ◽  
Computational Approaches ◽  
The Real ◽  
Maritime Education ◽  
Straight Line

AbstractIn this paper two new approaches are developed to calculate the astronomical vessel position (AVP). Basically, determining the AVP is originated from the spherical equal altitude circles (EACs) concept; therefore, based on the Sumner line's idea, which implies the trial-and-error procedure in assumption, the AVP is determined by using the two proposed approaches. One consists in taking the great circle of spherical geometry to replace the EAC to fix the AVP and the other implements the straight line of the plane geometry to replace the EAC to yield the AVP. To ensure the real AVP, both approaches choose the iteration scheme running in the assumed latitude interval to determine the final AVP. Several benchmark examples are demonstrated to show that the proposed approaches are more accurate and universal as compared with those conventional approaches used in the maritime education or practical operations.

A Note on Film Rupture in Hydrodynamic Lubrication

1987 ◽  
Vol 109 (3) ◽  
pp. 562-566 ◽  
Author(s):  
Terukazu Ota
Keyword(s):  
Experimental Data ◽  
Boundary Condition ◽  
Experimental Study ◽  
Boundary Conditions ◽  
Present Model ◽  
Hydrodynamic Lubrication ◽  
Correction Term ◽  
Plane Geometry ◽  
Separation Boundary ◽  
Film Rupture

A theoretical and experimental study has been made for a film repture in hydrodynamic lubrication. A model is proposed on boundary conditions at the film rupture point. It contains a pressure correction term as a parameter, which simplifies that derived by Coyne and Elrod, and the so-called separation boundary condition. Some experiments have been conducted for a flow in a cylinder-plane geometry. It is found that numerical results using the present model agree reasonably well with the present and previous experimental data.

Effect of a school-based intervention in eating habits among school children: quasi experimental study, Tunisia

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Asma Ben Cheikh ◽  
Jihène Maatoug ◽  
Rim Ghammam ◽  
Firas Chouikha ◽  
Amal Mallat ◽  
...  
Keyword(s):  
Experimental Study ◽  
Primary Schools ◽  
Intervention Program ◽  
Eating Habits ◽  
Intervention Group ◽  
Post Intervention ◽  
Healthy Environment ◽  
Healthy Eating Habits ◽  
Quasi Experimental ◽  
Snack Consumption

AbstractObjectiveThe present study aimed to assess whether six months intervention program with parents' implication in primary schools is able to decrease morning snack consumption among children aged 6–12 years.MethodsWe carried out a quasi-experimental study with two groups of schoolchildren in the region of Sousse (Tunisia) from 2015 to 2016. One primary school in each group was selected. In each school, we randomly selected a sample size of schoolchildren and their parents. The intervention was based on healthy eating habits promotion.ResultsThe consumption of morning snacks the day before data collection, reported by children, decreased significantly in post-intervention in both intervention and control groups. The decrease of consumption of morning snacks was significantly higher in intervention group (p=0.009). According to parents, the proportion of children who had the habit of eating morning snack decreased significantly from pre to post-intervention in intervention group (p<0.001).ConclusionA healthy environment should be created through effective school policies to prevent obesity.

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