A Design Methodology for Energy-Aware Processing in Unmanned Aerial Vehicles

Unmanned Aerial Vehicles (UAVs) have rapidly become popular for monitoring, delivery, and actuation in many application domains such as environmental management, disaster mitigation, homeland security, energy, transportation, and manufacturing. However, the UAV perception and navigation intelligence (PNI) designs are still in their infancy and demand fundamental performance and energy optimizations to be eligible for mass adoption. In this article, we present a generalizable three-stage optimization framework for PNI systems that (i) abstracts the high-level programs representing the perception, mining, processing, and decision making of UAVs into complex weighted networks tracking the interdependencies between universal low-level intermediate representations; (ii) exploits a differential geometry approach to schedule and map the discovered PNI tasks onto an underlying manycore architecture. To mine the complexity of optimal parallelization of perception and decision modules in UAVs, this proposed design methodology relies on an Ollivier-Ricci curvature-based load-balancing strategy that detects the parallel communities of the PNI applications for maximum parallel execution, while minimizing the inter-core communication; and (iii) relies on an energy-aware mapping scheme to minimize the energy dissipation when assigning the communities onto tile-based networks-on-chip. We validate this approach based on various drone PNI designs including flight controller, path planning, and visual navigation. The experimental results confirm that the proposed framework achieves 23% flight time reduction and up to 34% energy savings for the flight controller application. In addition, the optimization on a 16-core platform improves the on-time visit rate of the path planning algorithm by 14% while reducing 81% of run time for ConvNet visual navigation.

Application of Smoothed Particle Hydrodynamics (SPH) for the Simulation of Flow-like Landslides on 3D Terrains

Flow-type landslide is one type of landslide that generally exhibits characteristics of high flow velocities, long jump distances, and poor predictability. Simulation of it facilitates propagation analysis and provides solutions for risk assessment and mitigation design. The smoothed particle hydrodynamics (SPH) method has been successfully applied to the simulation of two-dimensional (2D) and three-dimensional (3D) flow-like landslides. However, the influence of boundary resistance on the whole process of landslide failure is rarely discussed. In this study, a boundary algorithm considering the friction is proposed, and integrated into the boundary condition of the SPH method, and its accuracy is verified. Moreover, the Navier-Stokes equation combined with the non-Newtonian fluid rheology model was utilized to solve the dynamic behavior of the flow-like landslide. To verify its performance, the Shuicheng landslide event, which occurred in Guizhou, China, was taken as a case study. In the 2D simulation, a sensitivity analysis was conducted, and the results showed that the shearing strength parameters have more influence on the computation accuracy in comparison with the coefficient of viscosity. Afterwards, the dynamic characteristics of the landslide, such as the velocity and the impact area, were analyzed in the 3D simulation. The simulation results are in good agreement with the field investigations. The simulation results demonstrate that the SPH method performs well in reproducing the landslide process, and facilitates the analysis of landslide characteristics as well as the affected areas, which provides a scientific basis for conducting the risk assessment and disaster mitigation design.

A Machine Learning Framework for Multi-Hazard Risk Assessment at the Regional Scale in Earthquake and Flood-Prone Areas

Communities are confronted with the rapidly growing impact of disasters, due to many factors that cause an increase in the vulnerability of society combined with an increase in hazardous events such as earthquakes and floods. The possible impacts of such events are large, also in developed countries, and governments and stakeholders must adopt risk reduction strategies at different levels of management stages of the communities. This study is aimed at proposing a sound qualitative multi-hazard risk analysis methodology for the assessment of combined seismic and hydraulic risk at the regional scale, which can assist governments and stakeholders in decision making and prioritization of interventions. The method is based on the use of machine learning techniques to aggregate large datasets made of many variables different in nature each of which carries information related to specific risk components and clusterize observations. The framework is applied to the case study of the Emilia Romagna region, for which the different municipalities are grouped into four homogeneous clusters ranked in terms of relative levels of combined risk. The proposed approach proves to be robust and delivers a very useful tool for hazard management and disaster mitigation, particularly for multi-hazard modeling at the regional scale.

How Indonesian People in the Past Deal with Disaster Mitigation? An archaeological perspective

Bencana alam adalah bagian dari riwayat bangsa kita sejak masa prasejarah. Meskipun bencana alam merupakan hal yang tidak terpisahkan dari kehidupan masyarakat Indonesia, namun disadari masih kurang kesadaran dan kesiapan terhadap kondisi ini. Hal tersebut ditunjukkan dengan tingginya angka kerugian material dan non material dalam setiap kejadian bencana. Keadaan ini disebabkan oleh belum optimalnya pelaksanaan penanggulangan bencana di Indonesia, khususnya dalam mitigasi bencana. Untuk merumuskan konsepsi baru penanggulangan bencana, masyarakat saat ini harus belajar menghadapi bencana alam dari manusia di masa lalu. Nilai dan kearifan lokal masih relevan hingga saat ini karena kita hidup di nusantara yang sama. Sebagai ilmu yang mempelajari budaya manusia yang telah punah, arkeologi dapat membantu menjelaskan sejarah bencana di suatu wilayah dan dampaknya terhadap kehidupan manusia di masa lalu. Dengan menggunakan pendekatan studi kepustakaan, tulisan ini bertujuan untuk mendeskripsikan aksi mitigasi bencana yang dilakukan oleh leluhur bangsa Indonesia sebagai acuan mitigasi bencana di zaman modern ini. Setidaknya ada dua sorotan nilai yang masih relevan. Pertama, pembinaan mental dan karakter masyarakat yang tinggal di daerah rawan bencana, dan kedua pembangunan fisik mengenai sifat bencana di masing-masing daerah. A natural disaster is part of our nation’s journey from the prehistoric era. Even though natural disaster is an inseparable matter with Indonesian people’s lives, but there is still a lack of awareness and readiness due to this issue. The high number sees it as material and non-material losses in every disaster event. This situation is caused by non-optimally disaster management implementation in Indonesia, especially in disaster mitigation. To formulate the new conception of disaster management, modern people should learn how to deal with natural disasters from ancient people. Values and local wisdom are still relevant today since we live in the same archipelago. As a science that studies extinct human culture, archaeology can help explain the history of disasters in a region and its impact on human life in the past. Using the literature study approach, this paper aims to describe disaster mitigation actions implemented by Indonesia’s ancestors as a reference to disaster mitigation in modern times. At least there are two highlights of values that are still relevant. First is the mental and character building of people who live in a disaster-prone area, and second is the physical development regarding the nature of disaster in each region.

Collective space on residential as a resilience measure to disaster mitigation earthquakes and liquefaction

Disasters have just hit Palu, Sigi, and Donggala, resulting in the fall of so many victims, not only humans but also city and village physicals (residential buildings, facilities, and infrastructure). Several villages hit by the disaster were hamlet 3 Vou, Langaleso village, Dolo sub-district, Jono Oge village, Biromaru sub-district, and Sigi district. The village’s condition was damaged, but most of the buildings and plants were lost to the mud. Settlement neighborhoods that should be full of activity are nowhere to be seen, and people become apathetic. They just accept this situation and are always waiting for help. Huntara, a form of assistance provided by funders, temporarily occupy the settlers’ land because the condition of the land or land needs to be cleared for the rebuilding process. The provision of inclusive spaces is one of the efforts to mitigate disasters in residential areas, namely public spaces that can be used by all settlers. These spaces must be safe and provide comfort, easy to reach, and become part of the residential environment. Village arrangement is one way that can be done to minimize the impact of a disaster. Arrangement of buildings, facilities, and environmental infrastructure are necessary not to create chaos in development. Also, aspects of environmentally friendly residential (village) spatial patterns, structural systems, and building construction that meet the requirements (SNI), the application of local and humane wisdom are no less important to consider in the process of procuring inclusive spaces in settlements, structuring villages, especially after a disaster.

Flood Disaster Mitigation Through Citizen Lawsuit

The state is responsible for providing protection and management in accordance with the authority it has so that environmental damage does not occur that causes flooding and is able to anticipate the possibility of flooding again in the future. However, in practice it cannot be denied that state administrators, in this case the central government to local governments, have the possibility of committing a mistake as an act against the law because it does not provide fulfillment of the rights of citizens, so that the community can sue the state for that mistake. Citizen lawsuits do not lead to claims for losses, but demands in the form of issuing general policies by the government. The purpose of this study is to find out about the efforts of citizens to obtain protection from the threat of flooding through the citizen lawsuit mechanism and to find out how the potential citizen lawsuit mechanism in resolving floods so that it does not happen again. This study uses a normative juridical approach by using perspective analysis. The results showed that the problem of flooding resulted in citizens not getting their rights to a good and healthy environment. The citizen lawsuit is carried out so that state officials issue a general regulatory policy as a preventive one (disaster mitigation) so that floods do not occur again in the future.

Women, Development, and Flooding Disaster Research in Nigeria: A Scoping Review

The growing threat of disasters caused by climate change, of which flooding is the most prevalent has led to a call for a change in the design of, and roll-out of disaster mitigation and response policies. A more inclusive approach to Disaster Risk Reduction has been advocated with the Sendai Framework for Disaster Risk Reduction calling for the involvement of women and marginalized groups for more effectiveness and efficiency. The rapidly urbanizing countries of sub-Saharan Africa are particularly vulnerable to the threats and impacts of disasters, including flooding, and women in these countries are differentially vulnerable and marginalized. In response to the call for the inclusion of women in disaster risk management, this scoping review seeks to understand to what extent Nigerian women have been engaged or included in urban flooding research. This review finds that very little research has been conducted on gender and flooding. In addition, 85% of the papers reviewed focus on rural women, while the prevalence and rising threats of flooding in urban areas are given little attention. As urban centers throughout the region are becoming more feminized, a better understanding of urban women’s experiences with flooding will help ensure a more inclusive and effective disaster response.

MAPPING A ERUPTION DISASTER-PRONE AREA IN THE BROMO-TENGGER-SEMERU NATIONAL TOURISM STRATEGIC AREA (CASE STUDY OF MOUNT SEMERU, INDONESIA)

Tourism is a sector of the world's economy, a macro-industry, and dynamic that has the fastest growth rate in the world. Tourism is often associated with beauty and pleasure. But behind that tourism is an economic activity that is very vulnerable to natural disasters, including volcanic eruptions. Management of tourism mapping in the Semeru Volcano disaster-prone area (Bromo Tengger Semeru National Park Tourism Strategic Area) can be used as a reference in development guidelines, disaster mitigation, and recovery in tourist areas. Thus, the purpose of this study is to produce a mapping of disaster-prone areas and the distribution of tourist attractions around Semeru Volcano. The research method used is the use of ArcGIS and Microsoft Excel applications. The data used is from the Population, Tourism, and Disaster Data of Semeru Volcano. The analysis technique uses map buffering and overlaying. Based on the results of the mapping, 57 villages are predicted to be affected and experience heavy losses. The number of villages is divided into 17 villages in Malang Regency and 40 villages in Lumajang Regency. These villages belong to several sub-districts, namely Ampelgading, Poncokusumo, Tirto Yudo, Wajak, Pasrujambe, Candipuro, Pronojiwo, Pasirian, Candipuro, Tempursari, Tempeh, Sumbersuko, and Tempursari. In addition, these disaster-prone areas are areas that have a lot of tourism potential. Most of the tourist attractions are affected by the eruption zone and affected by the lava flow. The tourism objects studied in this study amounted to 23. While the tourist objects that are classified as safe amounted to 11 objects. All tourist attractions around Semeru Volcano require the provision of pre-disaster knowledge, disaster mitigation, and restoration of tourist areas. With this knowledge, tourism will become the main economic sector of the community and can recover quickly after volcanic activity.

HOTSEP Analysis to Develop Disaster Research Integrated Book for Vocational Education (Drica) in 21st-Century

This study analyzed Higher-Order Thinking Skills of Environmental Problem (HOTSEP). It was conducted in March 2021. The sample comprised 114 vocational high school students, 66 male and 49 female students from several schools in Jakarta, Indonesia. The data was collected online using Google Form and Microsoft Excel for data analysis. The results showed that the HOTS score with analyzing environmental problems (C4) obtained an average score of 50. The thinking aspect of evaluating environmental problems (C5) obtained an average score of 49. The thinking aspect of making programs to overcome environmental problems (C6) obtained an average score of 47. Therefore, the study showed that the HOTS scores were relatively low since the average score was 51. The results showed that the HOTSEP score on the criticizing environmental problems (C4) obtained an average score of 24. The thinking aspect of environmental problem solving (C5) obtained an average score of 25. Furthermore, the thinking aspect of environmental innovation development (C6) obtained an average score of 23. Therefore, the study showed that the HOTSEP score was poor since the average score was 26. The research results suggest that learning media employed requires an improvement related to disaster mitigation. One media that can be developed is Disaster Research integrated book for Vocational Education (Drica). It can be concluded that the research results generally indicate that the vocational education students remain lacking in the HOTSEP aspect.