A Web-Based Rain Gauge Calibrator (WBRGC) is a rain gauge calibrator where the calibration result can be downloaded from a specific web as soon as the WBRGC finish the calibration process. This study aimed to design and implement three application software, namely data logger, display, and web application software used in WBRGC. This study was carried out by assessing their performances during the implementation of three application software along a calibration process. The data from fieldwork, namely ambient temperature, ambient humidity, water temperature, calibration duration, and the number of tipping, is sent by the data logger unit to the web unit through the display unit. The result shows that the software worked well for data transfers between the data logger application software and the display application software; and between the display application software and the web application software. It means that all software can operate well to run the WBRGC according to its function.

Some studies show that climate change influences the virtual water of products. Meanwhile, the impact of embedded water to life, especially in water aspect, is extraordinary. For the sake of saving water, studies on shadow water should be encouraged. The aim of this study was to calculate the embedded water of home industry yogurt from a producer in Bogor, Indonesia. The study was carried out using observations and in-depth interviews. The result showed that around 24 litres of virtual water in the form of blue water and grey water for cooling and dilution processes were needed to produce one litre of yogurt.

Monitoring the vibration behavior of buildings during and after an earthquake requires sensors installed in the buildings. Buildings installed with these sensors will transmit data to a monitoring center so that the stakeholders are provided with information on the performance of the buildings during the earthquake and whether the building is still safe or not after the earthquake. This paper discusses the development of optimum sensor systems capable of providing data for the above purposes.