Heterogeneity, politics of ethnicity, and multiculturalism: What is a viable framework for Indonesia?

Indonesia is a plural society that consists of several hundred ethnic and sub-ethnic groups. One of its generic characteristics is heterogeneity. In the last ten years after the implementation of regional autonomy, we have witnessed the emergence of strong ethnic and religiously flavoured local identity politics in various places in Indonesia that created open and vicious conflicts. This periodical violence exploded especially during the election of district and provincial heads. The intimate relation multiculturalism, with the actual political praxis of everyday life as an alternative to the existing paradigm of the “homogenization” of nationhood, has not been discussed. I believe it is time to discuss the strategic junctures between heterogeneity, politics of ethnicity (and religion) and multiculturalism as well as their possible realization at the local and national levels in order to find a viable framework for a future Indonesia.KEYWORDSHeterogeneity, regional autonomy, identity politics, ethnicity, religion, domination, conflict, multiculturalism, hybrid, and policy framework

Dual dynamic programming for stochastic programs over an infinite horizon

We consider a dual dynamic programming algorithm for solving stochastic programs over an infinite horizon. We show non-asymptotic convergence results when using an explorative strategy, and we then enhance this result by reducing the dependence of the effective planning horizon from quadratic to linear. This improvement is achieved by combining the forward and backward phases from dual dynamic programming into a single iteration. We then apply our algorithms to a class of problems called hierarchical stationary stochastic programs, where the cost function is a stochastic multi-stage program. The hierarchical program can model problems with a hierarchy of decision-making, e.g., how long-term decisions influence day-to-day operations. We show that when the subproblems are solved inexactly via a dynamic stochastic approximation-type method, the resulting hierarchical dual dynamic programming can find approximately optimal solutions in finite time. Preliminary numerical results show the practical benefits of using the explorative strategy for solving the Brazilian hydro-thermal planning problem and economic dispatch, as well as the potential to exploit parallel computing.Comment: 45 pages. New experiments for hierarchical problem and writing update

Virtual world-supported contextualized multimodal EFL learning at a library

This study aims to investigate the influence of story creation on young EFL learners’ reading performance. Action research was adopted to examine the effects of two different story reading projects in a library setting in Taiwan. Each project comprised a group of 19 young EFL learner from Grades 4 to 6 (aged 10-12). The first group’s activities consisted of picture storybook reading and word games. The results obtained from the pre- and post-reading tests on the learners’ performance revealed an increase in their English reading scores. But the results of the learners’ motivation and anxiety questionnaire were unsatisfactory. To overcome this discrepancy, a 3D virtual construction task using Omni-immersion Vision, an online VR construction tool, was added to the reading activity. This let the students express their ideas through multimodal resources including text and images in their stories and their 3D virtual contexts. The results showed that the second group made improvements not only in their English language reading but also in their learning motivation, and they demonstrated lower levels of anxiety than the first group. It appears that a combination of multimodal stories and context construction in virtual worlds benefited EFL learners