Explore the vast range of titles available.

Electric Submersible Pumps (ESPs) are widely deployed in high-flowrate wells but are constrained by frequent failures and the need for rig-based interventions. This study presents the development and field validation of a rigless cable-deployed ESP (CDESP) system designed to enhance operational uptime and reduce intervention costs. The system features a corrosion-resistant metal-jacketed power cable, an inverted ESP configuration that eliminates the motor lead extension (MLE), and a vertical cable hanger spool (VCHS) for surface integration without removing the production tree. A field trial in a high-H2S well demonstrated successful rigless deployment using coiled tubing (CT), achieving over two years of continuous runtime. Post-retrieval inspection revealed minimal wear, validating the system’s mechanical durability and reusability. Operational performance demonstrated reduced non-productive time (NPT), enhanced safety, and cost savings, with deployment completed in under 24 h, compared to the typical 10–14 days for rig-based methods. The CDESP system’s compatibility with digital monitoring and its potential for redeployment across wells positions it as a transformative solution for offshore and mature field operations. These findings support the broader adoption of CDESP as a scalable, efficient, and safer alternative to conventional ESP systems.

Dengue hemorrhagic fever (DHF) is a deadly disease that is transmitted through mosquito bites from the genus Aedes especially Aedes aegypti, Aedes aegypti can occur every year and affect any age. DHF has a high case fatality rate (CFR). Therefore we need a method that can detect CFR of DHF in Indonesia, one of which is the decision tree classification based on C4.5 and C5.0 algorithm. C4.5 and C5.0 algorithm starting with forming a root node and ending with a leaf node by evaluating attributes using information gain to measure the effect of attributes in classifying a dataset. In this article, an applied research is carried out, namely applying the decision tree classification with C5.0 and C4.5 algorithm based on R software to detect CFR of DHF in Indonesia. The attributes used are the incidence rate (IR), population density, many hospitals, and many medical personnel. The results show that C5.0 algorithm has a big error than the C4.5 algorithm, while the C5.0 algorithm has a smaller tree than the C4.5 algorithm.

The use of electric motors of the industrial world is as a motor for production equipment. One example of using an electric motor is a conveyor. The conveyor has a long operating time. Conveyors can move objects from one place to another. Therefore, the condition of the conveyor machine must be good so that there are no operational errors. Errors in conveyor operation can result in delays in the production process. From these problems, research is made on a controller and monitoring of electric motors on the conveyor based on current parameters. This electric motor monitoring is based on Programmable Logic Control. This system is designed by utilizing a Current Transformer to measure the current in each electric motor. This current condition detects the condition of the electric motor in real time. If there is a change in a current that is not in accordance with the normal current, the system will detect a disturbance. This system can also control the direction of motor rotation. This system can inform all forms of disturbances to electric motors in the form of indicators and graphs of current movements in real time.

There has been a dramatical change in Indonesia’s tropical peatland ecosystem in the last three decades due to various causes and climate change issues. This decreases the function of peatland ecosystem to support ecosystem balance and the rural livelihoods, including influencing the food systems. This paper highlights the prospects of food security in the changed and degraded peatland landscape in South Sumatra. A case field study was conducted in this research, followed by qualitative analysis. Peatland degradation, mainly from peatland conversion, illegal logging, and recurrent fires, lead to the decline of food availability from the peatland, such as, fish, honey bee, vegetable, and fruit. To deal with, several field actions are taken: (1) Local initiative in vegetable and fruit production on degraded peatland; (2) Government initiative in developing rice fields as part of food estate program; (3) Community, non-government organization (NGO) and government collaboration in introducing adaptive and prospective agroforestry. More prospective food security on the peatland can be achieved through the commodity diversification, improvement of the techniques, infrastructures, market access, and capacity of rural community. Harmonizing the policies between peatland management and food estate potentially can improve food security in tropical peatland landscape in Indonesia.

Community engagement and integrated research are key approaches to solving complex socio-ecological challenges. This paper describes the experience of bringing together a team of natural and social scientists from Australia and Indonesia in the ‘Gambut Kita’ (translated as ‘Our Peat’) project. Gambut Kita aims to produce new knowledge and support efforts to successfully, and equitably, restore Indonesia’s tropical peatlands and ensure that livelihoods can be maintained on restored (rewetted) landscapes. The paper focuses on experiences of using community engagement for integrated research. It discusses three community engagement approaches used in the project—resilience, adaptation pathways and transformation approach (RAPTA), participatory rural appraisal (PRA), and community-led analysis and planning (CLAP). It also describes the qualitative analysis of 14 interviews with the project team of lessons learned in community engagement for integrated research. ‘Criteria for success’ from the literature on international development projects is used to assess progress. The findings highlight the specific complexities of working across countries and cultures. Successful community engagement is not so much about the ‘tool’ but about the trust, agency, and support to change. The tools do, however, have different strengths. PRA and CLAP can build deep community understanding and relationships. RAPTA has strengths in framing visions and pathways to the future, systems thinking, anticipatory learning, and taking a cross-scale systems view which is required to solve many of the problems manifesting at local or community scales. Similarly, success in integrated research is not just about individuals, but structures (e.g. explicit process) and infrastructure (e.g. access to technology). These findings suggest that integrated research needs special considerations in terms of design, and these relate across scales to individual researchers as well as teams, leaders and organisations. Integrated research projects need careful, inclusive, iterative management with a lot of interaction to learn from each other, build a common vision, achieve clarity of roles, and share emerging findings.

Urban green open space area is one of the strategies to deal with climate change mitigation and adaptation issues. As one of the relevant exemplifications of the “Urban Forest” concept and sustainable urban development, legal control of urban green open space is necessary to support the effort. This study examines urban green open space policies, practices, opportunities, and challenges in Bogor city regarding climate change mitigation and adaptation. Furthermore, local regulations, including legal issues, key players, and their roles in urban forest management were also discussed. A desk study with descriptive exploratory was implemented in this paper. The results showed that there are challenges in the implementation of urban green open space area policies into urban forest practices. The land size allocation for urban forests in Bogor, West Java, is still not by the existing policies as their land size is far less than 30%. Moreover, most local regulations have relatively paid little attention to private property policy. Local governments can enact local regulations for technical guidelines in short-term strategy as local regulations are expected to support the regional level of urban forests and green open space development. Multi stakeholders’ cooperation and community engagement are potential initiatives for urban forest development at the local government level for climate change resilience.

High voltage capacitor charging system applied for multi-stage coil consisting of a coil arrangement as a launcher and requires much energy to work. However, large currents and the high voltage required are very limited. High voltage capacitor banks are used as an alternative for energy storage. This capacitor bank is supplied by batteries and requires a charging device. The process of charging a high voltage charging capacitor requires a DC-DC Converter device. In this article, to supply energy to the coilgun, a High Voltage Capacitor Bank is used. 10 capacitors are connected in parallel charging the capacitors with a voltage divider system to avoid swelling at the capacitor charge. This device has been successfully implemented in Multistage Coil Gun. The results achieved indicate an increase in voltage capability up to 1.8 kV DC.

Restoration of degraded peatland has proven to be complex and many activities that have been initiated in recent years have not had a significant impacted on restoring peatland condition. Revitalization activities that have been carried out in several locations have not been effective. Likewise, rewetting actions were often poorly understood by the community. This research aimed to analyze land use-based peatland restoration opportunities and challenges in Kayu Labu village, South Sumatra. Survey methods and interviews with the stakeholders were applied to collect primary data in the field. The results showed that although Kayu Labu has been designated as one of the focus villages for restoration by the Peatland Restoration Agency, the restoration efforts to date have not significantly impacted on people’s lives. The community has not widely known the implementation of the programs, and only those who were directly involved in the activities were aware of the peatland restoration program. Several opportunities are available to support the implementation of land use-based peatland restoration in Kayu Labu: the community has a strong willingness and commitment to restore their peatlands because they have suffered badly from peatland fires in the past. The community also acknowledges the loss of their livelihoods due to peatland degradation, especially for purun craftsmen, gelam collectors, and fishers. There are also opportunities from government and research programs to be implemented in this area to support peatland restoration. However, there are still challenges that must be faced: the increasingly massive expansion of oil palm plantations by clearing the peatlands, the lack of knowledge about peatland, and there is a general feeling from the community that without peatland their lives would be better off because they could grow diverse crops with higher yields. Therefore, capacity building, communication and knowledge enhancement, and partnerships are needed for the success of land use-based peatland restoration in Kayu Labu.

Social forestry program is intended to improve people's welfare and at the same time as an effort to conserve the forest. This paper examines the awareness of local communities toward social forestry programmes implemented by Ministry of Environment and Forestry of Republic Indonesia. This research was taken place in Bumi Kawa Village, Ogan Komering Ulu District. Survey, interview and focus group discussion methods were employed to collect the data. Descriptive qualitative method was used to analyze the data obtained during the research. Almost all of the people interviewed have a particularly favourable perception of the social forestry programmes implemented. Currently, the community has accessed the forest area and planted it with coffee. With the existence of social forestry program, community access to forests becomes a legal activity. The community can manage the land by implementing agroforestry system that is developing agricultural crops under forest trees. The type of tree that has been well known by the community is bambang lanang (Michelia champaca). This type of plant is suitable to grow in this region and has economic value. Based on the discussion, social forestry program is the best type of management for running the forests in this area. Communities were willing to further participate in tree planting activities. Moreover, women also had positive perception towards social forestry program although they were not fully involved in managing the forest. Some incentives were needed so that the local people will continue to participate in the long term environmental preservation.

With the price of UAV or people often call Drone getting cheaper, making this technology can be enjoyed not only for limited communities but also for the general public. The camera features mounted on the drone can be used for face detection and recognition. In this paper, we implement Haar-Cascade based classifier for face detection and recognition using OpenCV Python on a micro UAV that only 34.7 gr weight. The face detection process is done in real-time using an FPV camera that is controlled indoors at a distance of less than 50m. From the results of the experiment, it appears that the angle of the face is very influential, especially on the face that is not fully open, like a woman who wears a hijab. The best angle to take is in the position of flying in front of the face in accordance with the slope of the FPV camera mounted on the micro UAV.