The aim of this study was to investigate school dieticians’ awareness of the necessity for nutritional education and job satisfaction via qualitative research. For this purpose, in-depth interviews were carried out with 10 school dieticians. Results revealed that all participants said that schools urgently need nutritional education, and dietary attitude and unbalanced eating habits were the most urgent matters to be addressed. They made various suggestions related to revitalization of nutritional education: turning dieticians into nutritional educators, improving awareness of teachers and parents, receiving training on appropriate teaching methods, and so on. In response to their tasks, they considered bargaining with vendors and examination foods as the most burdensome tasks. In response to questions about how participants were treated in their workplaces, all participants reported low job satisfaction due to excessive work, lack of promotion opportunities, and low salary. To improve this, participants recommended creating a task manual, strengthening their role as managers, increasing their salary, and so on. Therefore, institutional support is necessary for dieticians to efficiently handle their excessive workload. In addition, an educational environment where dieticians can effectively carry out nutritional education needs to be created.

Working depth of the model net was determined by using of the same experimental tank and the same model net that used in the forwarded report in a series studies. The depth of the net which indicates the depth of the head rope from the water surface, was determined by the photographs taken in front of the net mouth with the combination of towing velocity, warp length and distance between paired boats. The results obtained can be summarized as follows: 1. Working depth of model nets A and B was varied in the range of 0.09~1.66〈TEA〉m,and 0.04~1.34〈TEA〉〈/TEX〉m〈/TEX〉(which can be converted into 2.7~40.2〈TEA〉mand 1.2~49.8〈TEA〉〈/TEX〉m〈/TEX〉in the full-scale net) respectively, and the depth of model net A was slightly deeper than the depth of the model net B. 2. Working depth (〈TEA〉D,which is appendixed m for the model net, f for the full-scale net, A and B for the types of the model nets) can be expressed as the function of towing velocity〈TEA〉〈/TEX〉Vt〈/TEX〉, as in the model net(〈TEA〉Vt=〈TEA〉〈/TEX〉m〈/TEX〉/〈TEA〉sec) 〈TEA〉〈/TEX〉DmA〈/TEX〉=(-1.99+0.65〈TEA〉Lw) 〈TEA〉〈/TEX〉e-1.72Vt〈/TEX〉 〈TEA〉DmA]=(-1.91+1.04 〈TEA〉Lw) 〈TEA〉〈/TEX〉e2.88Vt〈/TEX〉 in the full-scale net(〈TEA〉Vt=〈TEA〉〈/TEX〉k〈/TEX〉'〈TEA〉〈/TEX〉t〈/TEX〉 〈TEA〉DfA=(-29.32+0.65〈TEA〉〈/TEX〉Lw〈/TEX〉)〈TEA〉e0.40 Vt 〈TEA〉〈/TEX〉DfB〈/TEX〉=(-57.60+1.04〈TEA〉Lw)〈TEA〉〈/TEX〉e-0.67 Vt〈/TEX〉 3. Working depth 9〈TEA〉D appendixes are as same as the former) can be expressed as the function of warp length〈TEA〉〈/TEX〉Lw〈/TEX〉) in the model net, and can be converted into full-scale net as in the model net (〈TEA〉Vt=〈TEA〉〈/TEX〉m〈/TEX〉/〈TEA〉sec) 〈TEA〉〈/TEX〉DmA〈/TEX〉=-0.99 〈TEA〉e-1.42Vt+0.67〈TEA〉〈/TEX〉e-1359Vt〈/TEX〉〈TEA〉Lw 〈TEA〉〈/TEX〉DmB〈/TEX〉=-.258〈TEA〉e-3.77Vt+1.16〈TEA〉〈/TEX〉e-3.15Vt〈/TEX〉 〈TEA〉Lw, in the full-scale net(〈TEA〉〈/TEX〉Vt〈/TEX〉=k't) 〈TEA〉DfA=-29.28〈TEA〉〈/TEX〉e-0.32Vt〈/TEX〉+0.67〈TEA〉e-0.37Vt〈TEA〉Lw 〈TEA〉〈/TEX〉DfB〈/TEX〉=-69.10〈TEA〉〈/TEX〉e-0.81Vt〈/TEX〉+1.16〈TEA〉e-0.72Vt〈TEA〉〈/TEX〉Lw〈/TEX〉. 4. Working depth was gradually shallowed according to the increase of the distance between paired boats.