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Lely Fitriyani,Edwan Kardena,Sukandar,Qomarudin Helmy 대한환경공학회 2021 대한환경공학회지 Vol.43 No.2
Objectives : Solvent extraction is a process in which not only enable to reduce oil contaminant from soil residue, but also capable to recover oil from soil matrix of oily contaminated soil which has opportunity to be reutilized. Optimization process has been simulated by previous studies related to type and dosage of solvents, variances of temperature, additional of surfactants, and other related parameters to increase oil removal from oily contaminated soil. This study seeks an approach of optimization for solvent extraction process to oily contaminated solid waste by conducting statistical analysis into laboratory experimentation from perspective of Total Petroleum Hydrocarbon (TPH) removal. Method : Biosurfactant became single extractors for multistage extraction process and also combined with other solvents which are acetone and toluene. Mixing method that utilized during the study was combination between horizontal shaking at 150 rpm in 15 min duration and centrifugation force at 1,570 g in 10 min duration. Statistical analysis were conducted to seek its multiple regression. Result : Study describing biosurfactant performance single extractor by using multistage extraction process achieve 77% TPH removal, while combination of biosurfactant and solvent extraction by using toluene and acetone also capable to increase TPH removal 7% higher from original performance of both toluene and acetone at solvent extraction. Conclusion : Surfactant and solvents combination is promising to improve TPH removal, while statistics analysis that implemented to observed extraction process has possibility to be used for engineering higher efficiency of extraction process.
KREONET 에서 가상 환경을 위한 sFlow 모니터링 시스템
노르마라티프피트리야니 ( Norma Latif Fitriyani ),김재린 ( Kim Jae-rin ),송왕철 ( Wang-cheol Song ),조부승 ( Buseung Cho ),김승해 ( Sunghae Kim ) 한국정보처리학회 2014 한국정보처리학회 학술대회논문집 Vol.21 No.2
This paper provides insights into the sFlow monitoring system of OF@KREONET. OF@KREONET is software defined network (SDN) testbed adapted by KREONET (Korea Research Environment Open NETwork). OF@KREONET uses SDN-based network virtualization to slice the network among multiple concurrent experimenter. Flow Monitoring of OF@KREONET using sFlow. sFlow and OpenFlow can be used to provide an integrated flow monitoring system where OpenFlow controller can be used to define flows to be monitored by sFlow. OF@KREONET flow monitoring system supports monitoring of per slice FlowSpace. An Experimental can monitor his/her own FlowSpace while network administrator can monitor all spaces.
Why Does a Child Labor Exist in Aceh Province, Indonesia?
T. Zulham,Said Muhammad,Diana Sapha,Fitriyani,Jumadil Saputra 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.3
Child labor is a pervasive issue around the world, especially in developing countries. It is a wide phenomenon issue in which many countries have a similar problem related to child labor. The purpose of this study is to examine the factors determining child labor in Aceh Province. The data used is the primary data of the National Social Economic Survey (SUSENAS) 2016 conducted by the Central Bureau of Statistics. The dependent variable is children aged 10-17 years, while the independent variables are the educational level, the role of child as the head of the household, gender, residence area, single parent status, and age. The logistic regression model is used to describe the relationship between the independent variable (child labor and not child labor) with a number of explanatory variables. The result indicates that there is a relationship between child labor and all variables used in this model. Nonetheless, status as head of household and single parent woman are irrelevant as the significance value (α) is less than 5% by using the Wald Test Statistic. Thus, it is recommended to do some improvements in young people’s education system. Moreover, government policies that protect the human rights of child labors need to be done as a form of government intervention.
Investigating the Public Spending and Economical Growth on the Poverty Reduction in Indonesia
Said Muhammad,T. Zulham,Diana Sapha,Fitriyani,Jumadil Saputra 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.3
Poverty and income inequality are being one of the most challenging issues in many developing countries, including Indonesia. Considering the higher level of the poverty rate in Indonesia, the study about poverty reduction is crucial and currently under discussion in previous studies. Thus, this study is written to examine what is education and health budgets could be reducing the poverty rate in Indonesia. The study utilizes annual data gathered from the Central Bureau of Statistics over the 2007–2017 period and analyzed using panel data by assisting the Eviews-10. The empirical result finds that the budget allocated for education and health significantly reduce the poverty rate in Indonesia. Therefore, it is suggested that to further reduce the poverty level, the government should allocate more budget of education and health for the poor and there is a need to monitor the public service performance with the aim the allocation of expenditure can be more efficient and effective. Besides, it is necessary to increase the number of pro-poor programs such as free public health and education insurance to fulfill the basic needs of the poor.