Articles

Monitoring and Analyzing Air Quality in Several Locations around Medan City Using IoT-Based Integrated Sensors

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This research is motivated by the importance of monitoring air quality in industrial and non-industrial areas, especially in the city of Medan, Indonesia. Increasing growth of the industrial sector and use of transportation can increase air pollution. Air pollution caused by emissions of harmful gases such as NO2 and CO, as well as microscopic particles such as PM2.5 has a significant impact on human health, especially causing respiratory and heart disease and premature death. The rapid development of Internet of Things (IoT) technology can detect air quality and transmit sensor readings wirelessly via the internet to an Android or PC. This research aims to design an air quality monitoring tool related to the presence of dangerous gases NO2, CO and levels of microscopic particles PM2.5 with an integrated mics-6814 sensor and PMS5003 sensor based on IoT accurately and in real-time and analyze the results of air quality monitoring in research area. The research methodology involves measuring air quality parameters such as PM2.5, CO, NO2, temperature, and humidity using IoT-based integrated design tools. The research location consists of 3 points, namely around the industrial and residential areas of the Kawasan Industri Medan (KIM) Mabar, the Industrial Area in Tanjung Morawa, and the University of North Sumatra. Numerical data will be tabulated from the results of research carried out for 7 hours in 3 days based on the specified time. The results of this research show that the air quality monitoring system designed can measure temperature, humidity, PM2.5, NO2 and CO levels in real time and accurately. Air quality data collected at several research locations shows different trends. Overall, the air quality in the research area is in the healthy category, having no impact on the health of humans, animals and plants which is linked to Peraturan Menteri Lingkungan Hidup Dan Kehutanan Republik Indonesia. Suggestions for further research include selecting components that are more sensitive in detecting air quality and paying attention to environmental conditions which can reduce deviation values ​​from the sensor.

Comparing Solar Heater Designs: Evacuated Tube Vs. Flat-Plate Collectors

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In terms of solar heater designs, this study compares the characteristics of collectors made from evacuated tubes (ETCs) as well as collectors with flat plates (FPCs). Due to their reduced heat loss, ETCs—which have individual tubes made of glass with a sealed under-vacuum double-wall design—perform exceptionally well in colder climates. FPCs, in comparison, are more affordable but less effective since they include a simpler absorbent plate that fits inside of a flat panel. These designs can be implemented using the SolidWorks software, which permits precise 3D modeling as well as simulations. According to research, ETCs are appropriate for colder locations since their vacuum insulation reduces heat loss along maintains greater temperatures. Even while radiation losses make FPCs less efficient, they are still excellent at collecting daylight energy, specifically in warmer climates. Decision-makers looking for sustainable cooling solutions might benefit from analysis that takes into account technical characteristics, financial viability, and geographical compatibility.

The Effect of Supervision and Job Satisfaction on Employee Performance through Organizational Citizenship Behavior at The Body District Region Revenue Labuhan Batu

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Human resources are one of the most determining factors for the success or failure of an organization in achieving its goals, both public and private organizations. Every company needs employees who have high performance in achieving goals. To make employees have high performance, companies must pay attention to the expectations and needs of employees in order to make optimal contributions to the company. This study aims to determine whether supervision and job satisfaction affect employee performance through ocb as an intervening variable at the Regional Revenue Agency of Labuhanbatu Regency. The study was conducted on 52 employees using a saturated sampling technique. The data collection technique used was primary data in the form of questionnaires and secondary data obtained through documentation studies. Data analysis techniques used quantitative data processed with the SPSS version 25 program. The results obtained in this study show 1) there is an insignificant effect between supervision on ocb 2) there is an insignificant effect between job satisfaction variables on ocb 3) there is an insignificant effect between monitoring variables on performance, 4) there is a significant effect between job satisfaction variables on performance, 5) there is no significant effect between the ocb variable on performance, 6) the ocb variable can affect monitoring variables on performance, 7) the ocb variable can affect job satisfaction variables on performance.

Development of Citizen’s Charter to Improve the Service Provision at a Regional Health Services Directorate in Sri Lanka

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Introduction: Citizen’s charter is a means to improve service delivery processes and foster greater customer satisfaction. Unacceptable delays in providing services by the Office of Regional Director of Health Services, Kurunegala (RDHSK) and subsequent re-visits had created customer dissatisfaction. A citizen’s charter was developed to improve the service provision at RDHSK.

Methods: Ten services being provided to nursing officers by the Establishment Branch (EB) of RDHSKwere prioritized for incorporating in the charter. The services were mapped and redesigned, and deficiencies were dealt with developing and implementing the charter, its sub-components and supplementary interventions. The charter and sub-components were designed and implemented as per the Public Administration circular issued in 2008, adopting the participatory approach. To enhance the effectiveness of charter, several supplementary interventions were designed. A focal point, a steering committee, and monitoring, review and appraisal mechanisms were established. Documents that need access by nursing officers were kept at their workplaces in addition to RDHSK and its website. New developments were effectively communicated to the staff of RDHSK through training and to service recipients through multiple routes.

Results: The new developments included the citizen’s charter, its sub-components and supplementary interventions.  Sub-components include summary charter and feedback and response system with complaint and feedback formats, feedback box and feedback and response register. The supplementary interventions comprise document submission checklists, compilations of formats to be filled for receiving services with a relevant checklist on the top, guidelines for nursing officers and their work institutions on new developments, and a booklet on work steps for MAs providing services at EB.

Conclusion: The participatory approach, stakeholder involvement throughout, wider publicity of charter among service recipients and service providers, effective feedback and response system, and mechanisms for monitoring, evaluation, review and appraisal of the charter are useful means to successfully develop, implement and sustain charters.