Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 21 Issue 6

Table 1: JVTC Cost Classified, Unit: $Million (%) Types of costs 2017 2018 2019 Monthly Annual Monthly Annual Monthly Annual 1) Capital 0.8 11.3 0.7 10.2 0.5 5.5 (58.9) (54.5) (54.1) (50.4) (55.3) (50.7) 2) Labor 0.6 9.4 0.6 10.0 0.4 5.3 (41.0) (45.4) (45.8) (49.5) (44.6) (49.2) 3) Direct costs 1.3 19.7 1.3 19.3 0.8 10.4 (94.4) (94.6) (95.2) (95.3) (94.8) (95.6) 4) Indirect costs 0.1 1.1 0.1 0.9 0.0 0.5 (5.5) (5.3) (4.7) (4.6) (5.1) (4.3) 5) Fixed cost 0.4 9.2 0.5 10.2 0.3 5.8 (30.1) (44.0) (35.6) (50.3) (35.3) (53.2) 6) Variable cost 1.0 11.6 0.9 10.0 0.5 5.1 (69.8) (55.9) (64.3) (49.6) (64.6) (46.7) Total 1.4 20.8 1.3 20.3 0.8 10.8 (100) (100) (100) (100) (100) (100) Fig. 1: Cost ratio classified by a center size group Note: The personnel expenses (Labor wages and labor benefits: L), depreciation (D), the consumption and training activities (F), Utilities (E), and other expenses (O). It was found that the optimal large cost equation was a linear regression equation. The lowest AIC was 6,103. The 2 was 0.2. The total cost equation of the large center was approximately equal to = 2,490,545 + 2,205 0 . Even there was only one additional youth, a large center would cost $69. 3) The cost per unit analysis was analyzed from the total cost equations used to estimate Average Cost equations, Average Fixed Cost ( ), Average Variable Cost ( ), and Marginal Cost ( ). It was found that the AC line was U-curved with point e being the lowest AC point with 518 children in the center [Figure 2]. The cost per unit was $168 (annually $2,018). At point e, it was the point where the incremental cost line crosses the mean cost curve and was the point of efficiency correction of juvenile rehabilitation. 4) Economics Size analysis was based on AC curve of AC, , and . In the case of the AC curve of a large center, all cost lines were straight-line equations, the additional cost per unit equal to AVC equally to $69. Therefore, the AC curve was parallel to the horizontal axis. From Figure 3, the was drawn down into the horizontal axis and intersected with all Center AC curves at point b. At this point, it was the lowest AC. The was U-curved, where the minimum AC was upper the AC. The point at which the minimum AC was pointe. The AC was equal to the MC with 518 youths and the cost per unit was $168. It was found that the operations of small and large centers did not have Economies of Scale analysis. An Economic Evaluation of Thailand Juvenile Vocational Training Centers © 2021 Global Journals 1 Global Journal of Science Frontier Research Volume XXI Issue VI Year 2021 4 ( H ) Version I