School Breakfast Program (SBP) eaters weigh less and have healthier diets than nonSBP eaters. However, SBP is underused nationally, especially among low income youth. To explore the feasibility of expanding access to the SBP to improve participation among sixth grade students in one middle school in Minneapolis, Minnesota. A grab-n-go SBP menu, hallway delivery service and in-classroom eating strategies were implemented and evaluated with a cohort of sixth grade students (n=239) for 6weeks during spring 2010. Process measures were collected from students and teachers and through direct observations. The school district provided objective SBP participation data at baseline and post intervention. Students were very satisfied with eating in the classrooms (64%). Teachers (n=10) rated eating in the classroom as not messy, not disruptive and student behavior as excellent or good (100%). There was a significant increase in SBP participation from 0.74days per week to 1.21days per week (p<0.0001). Improvements were more pronounced among students eligible for free and reduced priced school meals. A school environment that supports convenient SBP menu and serving and eating locations was feasible and increased SBP participation in this suburban middle school.

Background This study tested the feasibility and acceptability of adding a reimbursable snack that meets the Institute of Medicine nutrition recommendations to an afterschool homework program for middle school students. Methods Snack menu was developed and administered to students attending an afterschool homework program over 12 weeks. In spring 2009, two cross-sections of middle school students completed study measures, including snack preferences. Key school personnel completed follow-up interviews assessing program feasibility. Results Survey evaluations from 110 students at baseline and 113 at posttest suggested improved preferences for healthy snacks. Teacher supervisors (n = 3) and the assistant principal rated the pilot project as feasible and beneficial, whereas school food service (n = 3) rated the program unsustainable because of administration logistics and costs. Conclusions The addition of healthy snacks to afterschool programs was liked by students and teachers. However, policies that support simpler accountability procedures may be needed for school-based afterschool snack programs to be sustainable.

In the last three decades, light’s orbital angular momentum (OAM) has been of great interest because it has unique characteristics that make it sought after in many research fields, especially in optical communications. To address the exponentially increasing demands for higher data rates and capacity in optical communication systems, OAM has emerged as an additional degree of freedom for multiplexing and transmitting multiple independent data streams within a single spatial mode using the spatial division multiplexing (SDM) technology. Innumerable research findings have proven to scale up the channel capacity of communication links by a very high order of magnitude, allowing it to circumvent the reaching of optical fiber’s non-linear Shannon limit. This review paper provides a background and overview of OAM beams, covering the fundamental concepts, the various OAM generators, and the recent experimental and commercial applications of the OAM-SDM multiplexing technique in optical communications.