There are few allometric equations available for dipterocarp forests, despite the fact that this forest type covers extensive areas in tropical Southeast Asia. This study aims to develop a set of equations to estimate tree aboveground biomass (AGB) in dipterocarp forests in Vietnam and to validate and compare their predictive performance with allometric equations used for dipterocarps in Indonesia and pantropical areas. Diameter at breast height (DBH), total tree height (H), and wood density (WD) were used as input variables of the nonlinear weighted least square models. Akaike information criterion (AIC) and residual plots were used to select the best models; while percent bias, root mean square percentage error, and mean absolute percent error were used to compare their performance to published models. For mixed-species, the best equation was AGB = 0.06203 × DBH 2.26430 × H 0.51415 × WD 0.79456 . When applied to a random independent validation dataset, the predicted values from the generic equations and the dipterocarp equations in Indonesia overestimated the AGB for different sites, indicating the need for region-specific equations. At the genus level, the selected equations were AGB = 0.03713 × DBH 2.73813 and AGB = 0.07483 × DBH 2.54496 for two genera, Dipterocarpus and Shorea, respectively, in Vietnam.Compared to the mixed-species equations, the genus-specific equations improved the accuracy of the AGB estimates. Additionally, the genus-specific equations showed no significant differences in predictive performance in different regions (e.g., Indonesia, Vietnam) of Southeast Asia.
In the world, university autonomy is considered the advanced governance method targeting improving the quality of higher education. In Vietnam, university autonomy, in particular, financing among public universities, has been experiencing the positive outcomes in line with both world trends and general guidelines of Vietnam’s Communist Party. As one of two National universities in Vietnam, Vietnam National University – Ho Chi Minh has been given a high level of autonomy in terms of training, research, financing, international relations, organization, and personnel since it was founded. Its current effectiveness has, however, witnessed negative results in the autonomous aspect, particularly financing. This paper examines the current situation to point out weaknesses and the cause of such weaknesses in financial autonomy effectiveness of Vietnam National University – Ho Chi Minh; this paper also offers some policy implications including (i) reforming the legal framework towards university autonomy, namely financial autonomy among public tertiary education; (ii) financing allocation reform from the state budget; (iii) improved financial autonomy mechanism at Vietnam National University – Ho Chi Minh; (iv) re-organizing the apparatus and improving personnel quality at Vietnam National University – Ho Chi Minh; (v) strengthening monitoring and internal control.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.