Air pollution dispersion modeling of runway and apron at Sam Ratulangi international airport

Air pollution generated from airport activities has become public concern and the subject of more rigorous government regulations. The Airport Operators are stipulated to control the pollution and for the accountability of air quality that might affect public health. The main objective of this study is to establish a model for the distribution of air pollutants and to predict their concentrations generated by the runway and apron operations at Sam Ratulangi International Airport (Manado) until 2024, in accordance with the airport expansion program. The data was collected in the airport surrounding area in 2018, while the climate data over a span of 10 years, from 2009 to 2018, was obtained from Sam Ratulangi Meteorological Station. The modeling on dispersion of air pollutant gases was developed by the Gaussian Plume Equation. The simulation was performed using AERMOD software, and the results visualized by GIS software. AERMOD software was recommended by the US-EPA to predict the impact of air pollutants. The results predicted that the maximum concentrations of NOx; HC; and CO generated by runway activities modeling in 2024 were 250 μg.m-3; 6.4 μg.m-3; and 87 μg.m-3 respectively. The results also predicted that the maximum concentrations of NOx; CO; and PM10 due to apron operational activities in 2024 were 260 μg.m-3; 892 μg.m-3; and 2.5 μg.m-3 respectively. The model predicted that in 2024 the air pollution at Sam Ratulangi International Airport will remain under the limit as defined in Indonesian Government Regulation No. 22 of 2021. To mitigate the future increase in air emissions due to the increase in airport capacity, the recommendation were proposed in the several areas, which were including operation management, technology, policies and airport regulations, as well as the provision of green area.

Aplikasi ngresiki untuk pelaporan penumpukan sampah memanfaatkan Global Positioning System (GPS) dan firebase

Increasing human productivity accompanied by increasingly advanced developments has an impact on the need for faster and easier communication and data exchange, one of which is using a mobile smartphone. ReResik application is an application that is used to report the accumulation of garbage. Garbage accumulation is a problem that is often encountered, one of which is in Gunungkidul tourism objects, so there needs to be a solution to solve this problem. One solution is to utilize Global Positioning System (GPS) and Firebase technology to create a waste reporting application. The use of GPS can make it easier to report the accumulation of garbage in a place by utilizing geo tagging technology and the complexity of the features found in Firebase provide user convenience both in terms of application development and the use of features in applications that can facilitate reporting and recipients of waste reports. All functions in the ReResik Application run according to design. Tests in the field can show the location of the accumulation of waste with photos sent with the difference in the accuracy of the location where the report of accumulation of waste occurs 1.38 meters from the location point sent by the application. The average data transfer capability of the ReResik Application upload is 1161.8 ms for the reporting section and 1004.2 ms for the cleaning staff. Functional testing of photos uploaded to Firebase has gone through the process of automatically compressing photos with an average value percentage of 61.22% of the uploaded photo size.

Improving employee job satisfaction in aviation industry

Job satisfaction is an important issue in an organization. Job satisfaction has been talked about over and over again because of the importance it has in both individual and group behaviour, which will affect in the productivity of an organization. Even though the role of job satisfaction is important in an organization, it is sometimes unnoticed and ignored by the management which in turn results in a decrease of organizational work performance. This study aims to answer why job satisfaction is important and how to improve it in aviation industry. The method used in this research is a literature review by finding specific researches that corresponds to the topic discussed, which is job satisfaction, to integrate them into a concise conclusion. This research uses samples from published journals in the last 10 years (2011 – 2021) found through google scholar with the main variable job satisfaction. The result of this study shows that based on the literature reviews of different journals, job satisfaction proves to strengthen employee engagement and organizational commitment, decreases the rate of employee turnover and improves employee productivity. There are a few proven ways to increase job satisfaction in aviation industry which is creating a conducive/positive work environment, applying reward and recognition management, developing the potential skills of employees and continuous evaluation and measurement of employee job satisfaction.