scholarly journals Design of a distribution network for the school lunch program

Author(s):  
Ayyuce Aydemir-KARADAG ◽  
◽  
Erol AKDERE ◽  

The national school lunch program (NSLP) is crucial for providing healthy, inexpensive, or free lunches to children, thus benefiting society. Designing a distribution network for the program requires solving a location and routing problem. In this paper, first, we formulate a multi-objective non-linear integer programming formulation of the problem. Next, we develop a two-step approach since the problem is Np-hard. The first stage presents a K-mean clustering method that deals with routing decisions by determining the locations of food processing centers and allocating schools to these centers. The second stage offers a multi-objective mixed-integer linear mathematical model for finding the locations of distribution centers. Besides economic and environmental factors, we optimize travel time in the network as perishable items are involved. A weighted sum approach is presented for different weights of objectives. We provide a real case study in Turkey to demonstrate the applicability of the two-stage approach proposed in this study. The numerical results provide valuable information for decision-makers and authorities to prioritize and prepare action plans.

2007 ◽  
Vol 41 (2) ◽  
pp. 265-284 ◽  
Author(s):  
CORBETT GRAINGER ◽  
BENJAMIN SENAUER ◽  
C. FORD RUNGE

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 493
Author(s):  
Olga Malisova ◽  
Antonis Vlassopoulos ◽  
Aikaterini Kandyliari ◽  
Evaggelia Panagodimou ◽  
Maria Kapsokefalou

School Lunch programs are a common strategy to address social inequalities in food access among children, especially food insecurity. The aim of this study was to evaluate the dietary intake and lifestyle habits of children aged 10–12 years enrolled in the School Lunch Program in Greece. A cross-sectional survey of fifth and sixth grade students, School Lunch recipients (n = 609) and control subjects (n = 736), collected data on sociodemographic, nutritional and lifestyle habits via self-reported questionnaires during May–October 2019. Despite enrollment in the School Lunch Program children in this group reported consuming less meals during the day (3.47 ± 1.38 vs. 3.65 ± 1.35, p = 0.002). No differences were seen in intakes of energy and macronutrients, however School Lunch recipients reported lower intakes of cereals/potatoes and legumes but higher fruit intake (2.32 ± 1.59 vs. 1.97 ± 1.72, p < 0.05). School Lunch recipients reported 42min/d and 28min/d higher screen-time during weekdays and weekends, respectively. Linear regression highlighted that dietary quality was not associated with School Lunch enrollment but rather sleep duration and screen time had a stronger influence on dietary habits. Enrollment in a School Lunch Program was linked to sustained differences in sedentary lifestyle habits but less so in dietary habits.


1950 ◽  
Vol 26 (9) ◽  
pp. 654-662
Author(s):  
Grace Augustine ◽  
Marjorie McKinley ◽  
Sara Luella Laughlin ◽  
Elizabeth L. James ◽  
Ercel Eppright

2021 ◽  
Author(s):  
Rachel Engler-Stringer ◽  
Jennifer Black ◽  
Nazeem Muhajarine ◽  
Wanda Martin ◽  
Sinikka Elliott ◽  
...  

UNSTRUCTURED Good nutrition impacts children’s health, wellbeing and learning, and schools offer an important setting to promote healthy behaviors that can last a lifetime. Once children reach school age, they spend more of their waking hours in school than in any other environment. Children’s eating habits may be easier to influence than those of adults. In Canada, households with children are more likely to experience food insecurity, and school food programs that are universally available to all children can support the development of healthy eating patterns across groups of varying socioeconomic status. There is a significant gap in rigorous community-engaged academic research on the impact of school meal programs, especially universal ones. The purpose of this population health intervention research is to study the impacts of a two-year universal, curriculum-integrated healthy school lunch program in elementary schools in Saskatoon, Saskatchewan, Canada on food consumption, dietary quality and food and nutrition-related knowledge, attitudes and practices. This population health intervention study will take place in two intervention elementary schools matched with two control schools. We will collect pre-intervention data including objective measurement of food eaten at school and food-related knowledge, attitudes and behaviors. This will be followed by the intervention itself along with qualitative case studies of the intervention process in the two intervention schools. Then we will collect post-intervention data similar to pre-intervention. Finally, we will wrap up data analysis and complete the ongoing sharing of learning from the project. The opportunity we have to systematically and comprehensively study a curriculum-integrated school lunch program, as well as the promising practices for school food programs across Canada is without precedent.


2016 ◽  
Vol 39 (1) ◽  
pp. 41-64 ◽  
Author(s):  
Gabrielle F. Miller ◽  
Jaclyn D. Kropp ◽  
Sonam Gupta ◽  
Kelly A. Grogan ◽  
Anne Mathews

Appetite ◽  
2019 ◽  
Vol 133 ◽  
pp. 191-198 ◽  
Author(s):  
Janet G. Peckham ◽  
Jaclyn D. Kropp ◽  
Thomas A. Mroz ◽  
Vivian Haley-Zitlin ◽  
Ellen M. Granberg

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