Land surface water bodies, an essential part of the Earth's water cycle such as rivers, lakes, swamp, and reservoirs, influence the global ecosystem and climate global significantly. Makassar, one of the most populated cities in Indonesia, recently experiences massive development that affects the existence of vegetation area and urban aquatic ecosystem. This study attempts to detect the urban surface water bodies and to monitor the change by using Landsat OLI TIRS. In order to extract the high accuracy of data, the image data utilized in this study was acquired by Landsat 8 OLI TIRS sensor on (USGS) portal analyzed by Normalized Difference Water Index (NDWI) and Modified Normalized Difference Water Index (MNDWI). These methods are scientifically used to classify the data into two categories consisted of water and non-water objects. The result shows that in the last nine years, urban surface water bodies increased around 129.8 ha distributed mostly in Manggala area. Due to rapid urban development such as housing, makes the urban runoff concentrating in low land and creates giant swamp as well as an urban wetland. In coastal areas however decline of the water body due to dominantly by massive reclamation, housing and factory settlement. The increase of urban surface water bodies can lower the urban heat while massive development in the built-up area can worsen the urban heat. Keywords-Landsat OLI TIRS; urban water bodies; water index; urban heat.

Employability can be an alternative solution to increase individual chances of getting a job. The study aims to identify indicators that can measure students' employability skills and attributes. The research model, based on The Conference Board of Canada (Employability Skills 2000+), is divided into fundamental skills, personal management skills, and cooperative skills. The method used Confirmatory Factor Analysis (CFA) with primary data obtained from surveys of students through a questionnaire will be analyzed using the AMOS program. These samples included 528 respondents who had done the work practices of the industry. The research respondents were students of the Faculty of Engineering, Universitas Negeri Makassar, divided into several majors. The results of the study identified that the low value of communication indicators in the variable of fundamental skills compared to other indicators was due to the lack of foreign language communication activities in the learning process. Communication is a vital aspect possessed by students, especially in global level competition. The study results were used to measure educational institutions to develop and improve low work skills indicators so that new graduates will better be prepared for work.

Makassar is one of the metropolitan cities located in Indonesia which recently experiences massive an increased construction because of population growth. Mapping the spatial distribution and development of the built-up region is the best method that can use as an indicator to set the urban planning policy. The purpose of this study is to identify changes in land use and density in Makassar City that occurred in 2013 and 2017 primarily for built areas, including settlements using optical data, especially Landsat data. The data analyzed by using multi-temporal Landsat OLI 8 data taken from 2013 to 2017. Normalized Difference Built-Up Index (NDBI), Urban Index (UI) and Normalized Difference Vegetation Index (NDVI) are the spectral indices produced from Landsat OLI band covering Short Wave Infrared (SWIR) wavelength, visible Red (R) and Near Infrared (NIR) areas that can be revealed by examining changes in land use and area cover. The result shows that both spectral indices namely NDBI and UI indicate an increased built-up area approximately 18 and 6%, respectively over four years. Also, based on NDBI reveals that most an increased built-up area distributes in the north of Makassar (Biringkanaya sub-district), meanwhile UI shows that Biringkanaya and Manggala sub-districts experience an increased built-up area. The development of the city will also never be separated from the history of city growth, current conditions, and the growth of the town to come. The phenomenon of the development of the town will include the development of city elements in detail, aspects of the shape of the town and the development of city regulations.

The aim of this study was to see the effectiveness of aeration in decreased levels of iron (Fe) in water wells before and after the aeration process using multiple tray aerator methods. The use of multiple tray aeration is expected to reduce the levels of iron (Fe) in water wells. This research is an experiment with 30 samples of good water that had higher levels of iron (Fe), which do not qualify as water obtained by non-random sampling in Gowa Regency. To find out the effectiveness decreased levels of iron (Fe) before and after aeration performed with SPSS statistical testing. The results obtained show the rate of decline in levels of iron (Fe) average about 2.21 mg/L with an average percentage of 68.01% decline. Value levels of iron (Fe) on average after aeration obtained at 1.12 mg/L. Although it has seen a decline the effective look at the results showed significant before and after the aeration is done but not yet clean water requirements with value levels of iron (Fe) up to 1.00. In contrast to the results of another study that the results of decreased levels of iron (Fe) obtained only around 0.20 mg/L or simply a decline of about 10%. The difference in the results achieved by the research conducted in the laboratory with a reduction of circulating air in the rooms was not big. To achieve the levels of iron (Fe) to fit the requirements it is necessary to further processing after aeration. Aeration method with multiple tray aerator can reduce levels of iron (Fe) in water wells. significantly but the results are not yet qualified to clean water

The aim of this study was to see the effectiveness of aeration in decreased levels of iron (Fe) in water wells before and after the aeration process using multiple tray aerator methods. The use of multiple tray aeration is expected to reduce the levels of iron (Fe) in water wells. This research is an experiment with 30 samples of good water that had higher levels of iron (Fe), which do not qualify as water obtained by non-random sampling in Gowa Regency. To find out the effectiveness decreased levels of iron (Fe) before and after aeration performed with SPSS statistical testing. The results obtained show the rate of decline in levels of iron (Fe) average about 2.21 mg/L with an average percentage of 68.01% decline. Value levels of iron (Fe) on average after aeration obtained at 1.12 mg/L. Although it has seen a decline the effective look at the results showed significant before and after the aeration is done but not yet clean water requirements with value levels of iron (Fe) up to 1.00. In contrast to the results of another study that the results of decreased levels of iron (Fe) obtained only around 0.20 mg/L or simply a decline of about 10%. The difference in the results achieved by the research conducted in the laboratory with a reduction of circulating air in the rooms was not big. To achieve the levels of iron (Fe) to fit the requirements it is necessary to further processing after aeration. Aeration method with multiple tray aerator can reduce levels of iron (Fe) in water wells significantly but the results are not yet qualified to clean water. Published in:Eco. Env. & Cons. 24 (1) : 2018; pp. (22-25)Copyright@ EM InternationalISSN 0971–765X