Malang is the second largest city in East Java after Surabaya. In general, the problems in Malang are similar to those in other big cities in Indonesia. Although urbanization is especially important for economic growth, it results in the degradation of environmental quality and promotes flooding, congestion, urban infrastructure problems, and slums. The tendency of the built-up area of Malang to increase faster, along with the population growth and development expansion, indicates that the city will surpass the region's holding capacity sooner than it should. Such conditions create an uncomfortable living environment. One way to make the city more comfortable, safe and in harmony with nature is to apply the green city (GC) concept. The purpose of this study is to analyse and evaluate the implementation of the GC concept in Malang. This research employs the gap analysis method, which compares the ideal GC conditions with the actual conditions in Malang. The results indicate that of the eight GC indicators, Malang focuses on three: green planning and design, green open space, and green community. Building construction comprises the lowest score of 0%, while the highest score is green open space indicator with 50%.

This paper aims to discuss and summarise research that has been conducted to provide an understanding of the development of spatial patterns of houses, housing, and the city master plan in Indonesia through the space syntax approach. The development of the house and the city essentially follows a basic pattern. This study provides an overview and understanding of the method of development of patterns by a study of deviations and ratios from an earlier pattern. Various approaches are taken to find the development of these structured patterns, both qualitatively and quantitatively. Data is collected using city master plans that are digitalised and analysed using Depth Map software. This study is a comprehensive study that has been carried out that supports sustainable urban forms. The study was conducted on Javanese houses, HBEs settlements, kampongs and three colonial cities in Indonesia. It found an understanding of the development of patterns, deviations, and similarities with previous spatial patterns. The results of this study are expected to guide housing designers, housing developers, urban planners and urban development policymakers to achieve a sustainable urban form.

This study proposes an easy method for calculating the spatial arrangement of Indonesian city planning, in line with sustainable urban forms. Several Indonesian cities originated during the Dutch colonial era. Although it is very important to consider the original plans of these cities to maintain their sustainability, generally, the original plans tend to be ignored. The master plans investigated in this work are those of three cities in Indonesia designed by Dutch planners of Semarang, Bandung, and Malang, and which are compared to two cities in the Netherlands (Delft and Amsterdam). The method used was by collecting images of ancient maps of Amsterdam, Delft, Bandung, Semarang, and Malang, then digitising the image from raster to vector so that it can be calculated using DepthMapX. This study utilised maps for computing the Depth of the cities. Then, a space syntax approach using Depth Calculation (DC) techniques is deployed for determining the similarity ratio among the cities. Based on the results of the assessment, it is found that there is similarity in Depth in the cities of Amsterdam and Delft against three Dutch colonial cities in Indonesia. This study supports that the DC in the master plan of cities in Indonesia is similar. The resulting ratio shows the extent of the difference between the pattern of Indonesian colonial cities and the pattern of Dutch cities. It is expected that this study will contribute to urban planners' and city governments' determination of the direction of development of a city designed during the Dutch colonial period. Maintaining the sustainability of the old colonial urban form requires harmony between urban planning and the policies made by the city government.

This service activity is the application of an innovative submersible solar pump in a hydro-organic greenhouse environment in Grangsil Jambangan, Malang Regency. This is motivated by the need for water that can only be obtained through deep wells with submersible pumps in hydro-organic greenhouses that already use solar power plants but have insufficient power. The purpose of this service is to provide theoretical and practical understanding for Tour conscious group (POKDARWIS) Jambangan members as managers of the hydro-organic greenhouse. The methods used include focus group discussions (FGD) and joint practice in developing solar power plants for submersible pumps. After the implementation of this program, there was an increase in the capacity of the solar power plants, which has been able to turn on submersible pumps, hydroganic circulation pumps, and other needs. In one day, the submersible pump only needs to be turned on for 2 hours and produces 4,572 liters of water, sufficient for greenhouse hydroganic needs and other needs. Another positive impact is that POKDARWIS Jambangan members have been able to manage and maintain PLTS for a hydro-organic greenhouse. The submersible water pump prototype for hydroganic agriculture at the greenhouse using independent energy is very practical and efficient so it is expected to become a prototype for modern agricultural facilities in the context of a national-scale food security improvement program.

In Indonesia, a kampong is an urban village region where about 75% of the city populace resides. Of late, kampongs have been drawing the attention of city government authorities with regards to formulation of kampong improvement initiatives and the conservation of kampongs by adhering to specific themes. This includes Malang city as well. Concerning one of the many urban planning challenges regarding sustainability, it is essential to monitor the kampong pattern in Malang. This pattern may be used for creating other kampongs using the template. The space syntax approach is utilised for determining the attributes of the kampong spatial patterns in Malang city. Moreover, kampong patterns were compared to determine the anticipated pattern. Depth computation and map connectivity concerning any theme-based Malang kampongs were used. Computing such patterns requires connectivity and depth computations. Justified plots are mathematical tools used for such computations; the DepthMapX software is used for the same. The present research aims to determine computations used for kampong pattern identification utilised for city planning. This computation will help determine which kampong has the most superior depth and connectivity among the reviewed kampongs and which kampong has the most intricate spatial syntax.