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As a researcher and architect, the author creates several architectural works, most of them are located on the Java island, Indonesia. The author believes that building with ecological principles and green architecture is important today to adapt to climate change and prevent the worst from happening. By testing these projects with the theory of ecology and green architecture, the authors get several conclusions that every project built must be able to answer climate problems that occur at this time. In this paper the author will describe the use of the 17 United Nations Sustainable Development Goals or we commonly knows as SDGs in his works on the island of Java, Indonesia. Architecture is a tool to achieve the Sustainable Development Goals.

The use of waste motorcycle tires as a substitute for coarse aggregate aims to reduce waste accumulation while providing durable road pavement that is resistant to damage. Motorcycle tires have characteristics such as weather resistance, water resistance, sufficient stability, high durability, flexibility, elasticity, and vibration absorption. This study aims to analyse the Marshall characteristics and calculate the Elastic Modulus in an AC-WC asphalt pavement mixture. Additionally, it analyses the stress-strain values of flexible pavement using the KENPAVE program. The testing results show that the Optimum Asphalt Content (OAC) for the AC-WC mixture is 6.5%. Test samples were made with 0%, 25%, 50%, 75%, and 100% variations for replacing aggregate passing through the 1/2” sieve and retained on the 3/8” sieve. The Marshall test results indicated that the higher the use of motorcycle tire pieces, the poorer the mixture’s characteristics became. The elastic modulus also decreased with the increasing use of tire pieces, attributed to the highly elastic and non-porous nature of the motorcycle tires. The best mixture was achieved with 0% tire replacement, which was then further analysed using the KENPAVE program. The analysis combined secondary data with the Elastic Modulus values obtained from the testing for justification purposes. The analysis revealed a tensile strain value (ε t ) of -0.0001847 with an ESAL (N f ) of 1,798,000, a compressive strain value (ε c ) of 0.0005574 with an ESAL (N d ) of 503,900, and a maximum damage ratio of 0.07243, resulting in a road design life of 13.81 years.

Architecture has a major role in the issue of global warming today. Therefore, the architects began to endorse the concept of ecological architecture and green building design. This study aims to examine a project of Omah Harimurti in Jakarta based on ecological and green architecture principle theories by Sim Van Der Ryn and Stuart Cowan as well as Robert and Brenda Vale. Both of their design principles were compared to identify the ecological and green design parameters to test the Omah Harimurti. Results of the study revealed that there are 4 parameters of ecological-green architecture design, such as nature should be the main actor of the design; nature becomes a solution for every problem in the site; honor the user by involved them as a designer; and be a climate conscious building by conserving energy. From the examination conducted, it is also revealed that the Omah Harimurti qualified as an ecologic and green architecture design.

The Government of Indonesia has set a roadmap towards net zero emissions by 2060, which includes accelerating the adoption of electric motorcycles. The government assigned the State Electricity Company (PLN) to accelerate the adoption by optimizing the potential of conventional motorcycle users and ride hailing. The battery swapping scheme is an attractive choice for companies to increase their profits. However, users still experience uncertainty about battery swapping. It is thus imperative to implement a battery reservation strategy to make it easy for battery swapping users to exchange them. The battery swapping industry is a complex system that involves many interrelated elements. Such a development of strategy would require a holistic view of the process and a definition of the relationships between the elements. This research aimed to develop a conceptual model for a battery swapping industry development strategy with a system dynamic modelling approach and a business model canvas framework. The conceptual model is presented in a system diagram, and a causal loop diagram provides the first information that has an impact on the company’s intervention in the battery swapping industry development strategy. Furthermore, the business model canvas should help to communicate the key aspects easily.

The ballast layer is part of the conventional railway track structure widely used in Indonesia due to its ease of maintenance, construction simplicity, and lower costs compared to slab track technology. This study models four types of test specimens, including the use of scrap tire rubber and bitumen materials. The scrap tire rubber and bitumen were added at proportions of 10% and 3%, respectively, using a compression test method to measure deformation, abrasion, and elastic modulus. The results showed that ballast modified with scrap tire rubber had the lowest stiffness value compared to the other three specimens. The deformation value of the ballast modified with rubber was the highest, reaching 9.12 mm with a stress of 77.27 kPa. The addition of elastic materials reduced abrasion by 0.6% and produced an elastic modulus of 81.6% of the unmodified ballast. However, unmodified ballast produced a deformation of 5.72 mm with a load of 196.59 kPa, and the resulting elastic modulus was 9907.64 kPa.

Nuclear grade aluminum capsules (AA-1070) was filled with 2 mg, 4 mg, 6 mg of target Sc 2 O 3 . The irradiation process of the capsule was performed in the Central Irradiation Position (CIP) G.A Siwabessy research reactor for 58.61 h. At the end of irradiation, 46 Sc radioactivity was 26.67; 57.81; 85.48 mCi/capsule. The SS-316 capsule swab test, its was found that 46 Sc radioactivity contamination was 2.198 Bq, 0.089 Bq and 0.218 Bq which were declared free of contamination. The gamma energy attenuation test for the thickness of the SS-304 plate, indicating that there is significant relationship between plate thickness and 46 Sc gamma energy intensity.

A number of researchers prefer using multi-channel surface electromyography (sEMG) pattern recognition in hand gesture recognition to increase classification accuracy. Using this method can lead to computational complexity. Hand gesture classification by employing single channel sEMG signal acquisition is quite challenging, especially for low-rate sampling frequency. In this paper, a study on the pattern recognition method for sEMG signals of nine finger movements is presented. Common surface single channel electromyography (sEMG) was used to measure five different subjects with no neurological or muscular disorder by having nine hand movements. This research had several sequential processes (i.e., feature extraction, feature reduction, and feature classification). Sixteen time-domain features were employed for feature extraction. The features were then reduced using principal component analysis (PCA) into two and three-dimensional feature space. The artificial neural network (ANN) classifier was tested on two different feature sets: (1) using all principal components obtained from PCA (PC1–PC3) and (2) using selected principal components (PC2 and PC3). The third best principal components were then used for classification using ANN. The average accuracy using all subject signals was 86.7% to discriminate the nine finger movements.

The geographical condition of the Pangandaran Regency affects the coastal area, periodically suffering hydrological hazards. Based on the Regional Disaster Management Agency of Pangandaran, Pangandaran Regency experienced Tsunami with a run-up height of 8 to 15.7 meters in 2006. The Tsunami caused 664 people to die, many to be injured, and caused social environment disruption. Therefore, this research aims to support disaster mitigation by identifying additional shelter locations and generating evacuation routes sequentially. This research uses the network analyst method of Geographic Information System (GIS). The identification of evacuation shelters utilizes several parameters, e.g., tsunami hazard catchment area, land slope levels, land cover, and street network. In addition, the spatial analysis considers average travel time as the impedance to resemble the actual evacuation process. The result indicates that 11 evacuation shelters scattered over the study area were dominantly located in Pangandaran Village. Moreover, this research generates 24 evacuation routes from the incident location to each shelter. The closest shelters accessed 8 minutes from incidents 4 and 18 are shelters 3 and 9, respectively. On the contrary, the farthest shelter is shelter 9, with a maximum impedance of 22 minutes from incidents 14 and 15. Furthermore, the most appropriate shelters are shelters 2 and 8, considering the elevation height of 10 and 7 in the open space.

Covid-19 had changed the way we perceived our living environment. As people now spent more time inside, indoor quality especially in terms of environmental factors is considered important in future housing. It is not just one of the indicators for healthy housing, but also green housing. The purpose of this study is to investigate Indonesian’s housing satisfaction and preferences towards indoor quality in terms of environmental factors in the context of the Covid-19 Pandemic. The environmental factors indicators used in this study were daylight, air, acoustic, view , and green space quality . This quantitative study used an online questionnaire to collect data. The data analysis compared mean values and gap differences of values for each indicator. The results showed residents were satisfied enough with almost all of the indicators in their current living environment during the pandemic. As for residents’ preferences, daylight quality, air quality , and green space are the top priorities needed to be considered for their dream houses. As for gap differences, it was found that green space, air quality , and acoustic quality needed to be improved, as respondents’ expectations are higher. Understanding housing satisfaction and preferences from the residents’ perspectives in the context of Covid-19 pandemic is considered important, as their demand can motivate developers and other stakeholders to adopt healthy and green building practices. It is hoped that the results of this research can support the studies on future healthy and green housing, especially in terms of environmental factors quality.

The unmanned aircraft system (UAS) industry in Indonesia is lagging behind in market share and innovation. An effective government policy is crucial to make domestic UAS products more innovative and competitive. However, still not enough academic research discusses the system structure of the UAS industry. Considering the complexity of the UAS industry, this study uses system dynamics in combination with a policy analysis framework to capture a broader perspective on the system. The conceptual model showed that a policy structure to shift customers from imported products to domestic products may help the development of the UAS industry and advance UAS technology.