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"Recently the low of labour from China to Indonsia has fuelled many discussions but is not a new Phenomenon. It can be traced back to the eighteenth century and continued until the twetieth century. In colonial Indonesia, the Chinese labour force was recruted to wok in the economic sector of mining, plantations, fisheries and forestry. Unfortunately, previos studies about Chinese sociey indonesia more focused on economic and political elites rather than the social history of the Chinese contract coolies. This article attempts to look at the labour history of the Chinese coolie in the forest explotation companies, know as panglong. By focusing on the ways in which they were treated in the recruitement process and workplace, this article show that change for the better did take place in the appalling working conditions of the labourers. Until the second decade of the twentieth century, recruitment, food,and health care were rife with manupulations, exacerbated by arduous working condition and insecurity in the workplace, abuse of power by mandors and forms of non-economics coercion like the use of opium. All these factors were meants to ensure that the Chinese contract laboureres could not break koose form their indentures, a modern form of slavery. Hampered by budgetary restrictions, lack of personnel, and marine transport facility, the state colonial offcial were hamstrung But in the second decade of twetienth century, when the abysmal working conditions of the CHinese coolies were debated on a higher lebel by policians and bureanracts state control was tightened. More effectual contorl by the state had a positive effect on improving of the working and living conditions."

"A phase field model has been successfully constructed to simulate the behavior of the semi-crystalline polymer solidification phenomenon. It is a model that has been widely and successfully utilized to simulate solidification phenomena in metals. However, the non-conserved phase field equation can be extended to include unique polymer parameters that do not exist in metals; for example, polymer melt viscosity and the diffusion coefficient. In order to extend this model, we incorporate free energy density and non-local free energy density based on the Harrowell-Oxtoby and Ginzburg-Landau theorems for polymer. By using the expansion principle for the higher order of binary phase field parameter, a full modified phase field equation can be obtained. The solidification phenomenon in polymer is very important to optimize the final properties of the products. Here, we use our modified equation to investigate the effect of melting temperature on the rate of solidification. It was found that the rate of solidification is correlated with melting temperature in a non-straightforward manner."

"The phenomenon of rapid economic growth has caused a rise in energy consumption in Jakarta, including a rise in the need for electricity. To supply the population’s needs, Perusahaan Listrik Negara (PLN), Indonesia’s state-owned electricity company has a plan to build an additional power plant; the energy industry in Indonesia is currently dominated by coal-based power plants. However, this mega project will have an impact on Jakarta’s economy (gross domestic regional product, GDRP) and the CO2 emissions will have an effect as a result of the social cost of carbon because the coal-fired power plant has the highest emission rate compared with other power-plant types. Through the system-dynamics (SD) approach, this study aimed to examine several alternative policy scenarios and determine the best options that can be applied by the Jakarta government to ensure the success of electricity production, which can help to grow Jakarta’s economy and minimize the effects of CO2 emissions simultaneously. Three policies were simulated in the model: business as usual (BAU), a green policy, and a good economic policy. The results of simulation show that each scenario has its own advantages and disadvantages to achieve government target. This study reveals that using combination of green and economic policy is highly recommended to help Jakarta’s growth sustainably."