bluuebunny/crossref_metadata_2025_split huggingface dataset:
Slope stability analysis at coal mining sites in Central Kalimantan
Authors: Prabowo H , Barlian E , Syah N , Sastra A T 
Published: May 2023

Abstract
Slope stability is an important factor in the planning and operation of open pits and mines. Currently the company has been mining up to a height of 20 meters. In the implementation of mining activities, the potential for landslides on the side walls of the slopes of sector X occurs on one of the slopes, namely at an elevation of +70 masl. The company made two design choices, one of which was confirmed by researchers in overcoming the potential for landslides. In carrying out slope analysis, information about the general properties of rock mass consists of testing the physical properties of rocks and testing the mechanical properties of rocks. The results of the safety factor analysis of the A-A cross-section with 2.476 saturated MAT (Stable) and dry MAT 3.159 (Stable), while the B-B cross-section with saturated MAT 2.161 (Stable) and dry MAT MAT is 2.771 (Stable). Meanwhile, for the two segments, A-A’ with saturated MAT of 2,459 (Stable) and dry MAT of 3,131 (Stable), while the B-B’ section with saturated MAT of 1,653 (Stable) and dry MAT of 2,464 (Stable). The researcher recommends using option 1 based on the safety factor value which shows a higher value.
Analysis of extreme wind wave based on weibull and fisher tippett I (gumbel) distribution
Authors: Pratiwi D , Pratama R , Fitri A , Lestari F 
Published: May 2023

Abstract
Extreme waves are an important factor in coastal structures both offshore structures and onshore structure design. However, due to the difficulty of measuring ocean waves, many areas still do not have measured wave height data. Data processing is required to transform the measured wind data into wind-wave value in order to solve this issue. This study aims to analyze extreme waves based on wind data from BMKG Panjang and BMKG Radin Inten II stations. For analysis of determination of extreme waves can be done by using Fisher Tippet Type I (Gumbel) and Weibull methods. The result show that Weibull method gives the higher value than Gumbel method, with the maximum percentage of 43.04% at the 2-year return period.
Adsorption using fly ash from stam power plants for acid mine drainage treatment
Authors: Siswati S , Pratama H , Giatman M 
Published: May 2023

Abstract
Acid mine drainage has a negative impact on the environment. Adsorption is an effective and efficient method for acid mine drainage treatment, besides that adsorption does not have a negative impact on the environment. This study aims to analyze the ability of fly ash from a steam power plant as an adsorbent in acid mine drainage treatment. Using experimental methods and batch adsorption mechanisms, with variations of adsorption parameters carried out including adsorbent dose, stirring time, and stirring speed. The test results show that fly ash is very effective in acid mine drainage treatment. Where there is an increase in pH and a decrease in the concentration of Mn and Fe metals in acid mine drainage to match the quality standard. The increase in pH was in the range of 6.3 to 7.4 with the highest effectiveness of 54.05%. In the reduction of Mnmetalthe highest effectiveness was 78.14%, while in Fe metal the highest effectiveness was 85.83%. Fly ash can be used and is very useful in reducing the impact on public health.
Performance Index of Anai I Irrigation-Area, Padang Pariaman
Authors: Junaidi  , Ulfa Jf Radhiatul , Mera Mas 
Published: May 2023

Abstract
The irrigation area of Anai River I which has an area of 6,764 hectares is one of the main irrigation-area in West Sumatra Province. The objective of the present study is to determine the performance index of the main irrigation network (main building, primary canal and secondary canal) of the Batang Anai I Irrigation-Area based on the Minister of Public Works and Public Housing Regulation No. 12/PRT/M/2015, and to determine the level of service of it based on the MASSCOTE method. The method based on Permen PU No.12/PRT/M/2015 examines six aspects. They are physical infrastructure, planting productivity, supporting facilities, personnel organization, documentation and farmer association (WUA). The MASSCOTE method is based on the Rapid Appracial Procedure (RAP) which has four indicators in its assessment, namely; indicators of service, farmer association, human resources and of channel-operation modernization. Based on the Minister Regulation, the Batang Anai I is in the moderate category (76.85%) in the physical performance. Meanwhile, based on the MASSCOTE method, it is in the good category (3.22 in 4-scale) in the level of service. Based on both those categories, the management of the irrigation area only needs the operation and maintenance action.
Detection of flood inundation in serayu watershed using landsat-8 and sentinel-2 satellite imagery
Authors: Suroso  , Zikri A , Santoso P B , Ardiansyah  
Published: May 2023

Abstract
Floods are natural disasters that occur routinely almost every year in various regions in Indonesia, especially on the island of Java. According to the National Disaster Management Authority (BNPB), in 2001-2021 there were 5542 floods in Java. Determining the area of flood inundation is very important to know the potential and risk of the impact of flooding in an area. The purpose of this study is to develop a method of detecting flood inundation areas based on Landsat-8 and Sentinel-2 satellite imagery data using the Normalized Difference Water Index (NDWI) parameter. The Maximum Likelihood Classification (MLC) method was chosen to classify inundated areas and non-flooded areas. The Landsat-8 and Sentinel-2 satellite images were selected during the wet months that usually rain, January, February, March, November and December in 2020. The results show that the Landsat-8 satellite can detect water inundation better than the Sentinel-2 satellite. The results are influenced by the difference in recording time between the two satellites, the presence of clouds that cover the research location, and Landsat-8 imagery data that does not cover the entire location area.
Backwater flow analysis due to the construction of the check dam series on Aie Dingin River using HEC-RAS
Authors: Daoed D , Sunaryo  , Arsyad F 
Published: May 2023

Abstract
River profiles with steep slopes and loose-grained soil types will easily be carried away by river currents. One way to reduce the sediment rate is by constructing a check dam or a series of check dams. However, the effect of a series of check dams can influence each other, due to backwater flow. On the one hand, it is advantageous because the flow velocity is reduced, but it will raise the water level downstream of the dam and increase the height of the embankments and ponds. Based on the foregoing, an analysis of the backwater flow was carried out using HEC-RAS. The results obtained are that water backflow occurs in two water structures, namely the Koto Tuo and Koto Pulai check dams. The backwater flow is quite long, almost reaching the previous check dam. Where the length of the backwater flow is only up to the final threshold and it is advisable to observe local sedimentation behavior due to backwater flow.
Effects of COVID-19 on transportation services and travel behaviour in Malaysia
Authors: Gungat L , Deh D R , Putri E E 
Published: May 2023

Abstract
Movement restrictions implementation due the COVID-19 pandemic affected people’s mobility and and transportation sectors globally. Tourism, retail, transportation, and hospitality also suffered significant consequences that indirectly impacted a country’s economic stability. Hence, this paper presents the Malaysian experience with the effects of the pandemic on transportation services and travel behaviour. Online sources, secondary data and a questionnaire survey were employed to collect the relevant data. These data were further analysed and presented in this paper. In general, transportation sectors involving air, rail and public bus showed decreased demand and services. A severe drop in services was observed in air transportation which is more than 97%. Most people prefer not to use public transportation to avoid the risk of COVID-19 infection. Noticeable changes in travel behaviour and mode preference during and pre-pandemic are observed, particularly on trips related to work/school. Key pandemic factors concerning transportation were fear of infection and social distance. Hence, most people prefer to use a private vehicle. The changes in transportation service and travel behaviour result in severe losses in the transportation sector in Malaysia.
Developing pedestrian evacuation path parameters based on the requirements of Indonesia National Agency of Disaster Management and the Indicators of the Global Walkability
Authors: Rifwan F , Yosritzal  , Purnawan  , Yossyafra  
Published: May 2023

Abstract
The tsunami incident in 2004, in Aceh, was killed around 230,000 people and destroyed more than 1,000 buildings. Many accidents also occurred related to the earthquakes and tsunamis in Indonesia. For example, when the big earthquakes happened in Padang City, people evacuated themselves by using cars or motorbikes (motorized movement). It created a problem; and became worse when the movement was not effective. All research related to evacuation movement suggested that walking is better than moving using vehicles. Thus, people who will evacuate by walking should be supported by good and sufficient infrastructure, such as the path. Up to recent time, there has been no research conducted in relation to finding the solution this problem. Therefore, this article reports on the research that focused on the parameters of the path design. The validity and reliability of the test, were measured by experts. The research respondents filled the form and their responses were taken as the data analyzed to get the parameters, indicators, and levels based on the adjustment of BNPB (National Agency of Disaster Management) and GWI (Global Walkability Indicators) guidelines. In conclusion, the four parameters: walking path mode conflict, availability of walking path, amenities, and obstruction were found.
Upstream Brantas Watershed management strategies for flood mitigation (a review: Batu District)
Authors: Handayani D A , Kurniadi A , Bahar F 
Published: May 2023

Abstract
The floods that occurred in Batu in November 2021 were the result of improper management of the upstream area of the Brantas river. This paper reviewing the parties involved in s watershed management strategies with floods. We start by reviewing the watershed management by the stakeholder in upperment areas Brantas. Then we discuss the mitigation strategies’ role in invoicing the negative impact of floods. This research uses qualitative descriptive methods through secondary data collection and literature studies on previous research on management strategies for the upstream area of the Brantas River. This result of the analysis showed that the watershed manages by several leading sectors. The good carrying capacity of the upstream area of the Brantas river is a collaboration of management by the stakeholders. That ability to generate the desired output of basic resources to reduce the risk of several flooding disasters, while maintaining the desired environmental quality. Efforts to develop the regional management can be pursued through community empowerment activities which in practice are carried out through various forms of cooperation/partnerships including community groups. That ability to generate the desired output of basic resources to reduce disaster risk of more severe flooding disasters, while maintaining the environmental quality.
The Importance of Village Resilience Assessment in Village Based Programs to Support Regional Resilience
Authors: Nurmala Virana Fatwa , Pelita Panjaitan Berton Suar , Subiyanto Adi 
Published: May 2023

Abstract
Village Resilience Assessment is a process of assessing resilience that is carried out by the community independently to determine the level of resilience. This assessment framework adopts village and urban village disaster resilience standards in SNI 8357:2017 and adapts the DROP (Disaster Resilience of Place) model. The methodology in this study uses a qualitative method with a descriptive analysis approach. Assessment of village disaster resilience produces several outputs, such as Village Resilience Index Values, Village Resilience Levels, and recommendations for action to increase village capacity. The Village Resilience Index value consists of three levels, namely Tangguh Utama <83.33, Tangguh Madya 58.3 – 83.33, and Tangguh Pratama <58.3. The results show that the Village resilience assessment is important because the Village Resilience Assessment is a tool to measure the level of village resilience in a simple way so that it will make it easier for village communities to carry out action plans to reduce vulnerability and increase capacity. disaster resilience village which aims to map the conditions and initial description of the level of risk, level of vulnerability and level of village capacity in dealing with disaster threats.
Numerical Modelling of Constructed Wetland using Software HYDRUS 2D
Authors: Adek Rizaldi M. , Limantara Lily Montarcih , Suhartanto Ery , Harisuseno Donny , Izzaty Nadia Karima 
Published: May 2023

Abstract
One of the problems involving water bodies is the pollution of water sources, which later becomes the parent of various social, economic, and health problems. One of these conditions can be overcome by utilizing phytoremediation through constructed wetlands. HYDRUS is a software that offers easy modelling of pollutant decay mechanisms in water bodies and constructed wetlands using finite element method. This study aims to show and analyse how HYDRUS software can model the mechanism in constructed wetland by using finite element method. The parameters observed are the time for the pollutant, namely ammonia, nitrate, and inorganic phosphorous, to reach the outlet, and the response curve of the pollutant loading on the model. From the simulation, it can be inferred that the maximum velocity of the water going through the constructed wetland is 8.11 m/day, or 811 cm/day. The dominating velocity in the wetland is around 160 cm/day, or 1.6 m/day. The response curve of the pollutant transport is also in accordance with theoretical response for impulse loading. The result yields the effectivity of simulated constructed wetland, which are 90.33% for ammonia and nitrate, and 90.26% for inorganic phosphorous. The result yields quite optimistic effectivity of the constructed wetland, which may be caused by the assumptions made in the model, which goes through simplification method. It can also be caused by the differences in plants assumption. In the HYDRUS simulation, the plant used is grass, which does not specify what kind of grass. Meanwhile, the physical simulation uses water bamboo.
Village resilience to tsunami hazard: a Desk Research on the west-coastal villages of the Regency of Serang, Province of Banten, Indonesia
Authors: Tiwi D A , Ganesha D , Akhirianto N A , Putra A P , Umbara R P , Shomim A F , Astisiasari  
Published: May 2023

Abstract
This desk research delivers an introductory study of village resilience on the western coastline of the Regency of Serang, Province of Banten, Indonesia. It aims to preliminary characterize the level of village resilience to a tsunami hazard. This study utilizes secondary dataset, retrieved from the authorized institutions (statistical bureau and regional government) and accredited news (government bulletin and news agency). It adopts and modifies the four notable methods on resilience analysis, in order to accommodate the relevancy to study area’s dataset availability. The reformulated method is developed by taking into account the variables of: vulnerability (physical, social, and economical aspects) and capacity (preparedness and mitigation measures) within a village as its unit analysis. Furthermore, SWOT analysis is conducted to present the appropriate recommendations for strengthening the resilience. The study finds that generally, tsunami resilience in study area is still considered inadequate, where among the eleven villages, seven villages set low for the Resilience Index (RI). In regards to this, SWOT analysis assembles a total of fifteen possible strategies and seventeen desk-based recommendations to promote the tsunami-resilient village.
Community-based disaster risk reduction efforts in facing the threat of abrasion disasters at Bungin Beach, Bekasi Regency during the covid-19 pandemic
Authors: Fathoni S , Sutisna S , Supriyatno M 
Published: May 2023

Abstract
Abrasion causes coastal areas to have a very high level of dynamics and often has an impact on environmental damage, so it needs to be anticipated. In the last 2 years, the whole world has faced a crisis caused by the pandemic due to Corona Virus Disease (Covid-19). During the pandemic, the environment where coastal communities live is still threatened with abrasion. Some mangrove planting and rehabilitation activities had to be stopped to suppress the spread of the virus. The purpose of this study was to identify the role of community groups (Tourism Awareness Group) as a key factor in overcoming abrasion events during the Covid-19 pandemic at Bungin Beach. Interviews and direct observations were conducted to obtain survey data. Additional analyzes were then carried out through relevant journals and literature reviews. As a result, from 1997 to 2021 there has been abrasion on Bungin beach. The Tourism Awareness Group plays a role in post-pandemic recovery, especially in the economic sector. Through mangrove planting activities, not only to restore the economy of coastal communities during the pandemic but also to protect coastal ecosystems from the threat of abrasion on Bungin Beach.
Underground-caves connectedness preview using the geoelectrical profiling method as an effort to revive natural tourism in “Gua Pandan,” East Lampung Regency
Authors: Antosia R M , Akbar H H , Santoso N A , Putri I A , Farishi B A , Natalia H C 
Published: May 2023

Abstract
The Covid-19 pandemic has made one of the tourists in the East Lampung regency inactive, namely “Gua Pandan.” Due to its unique location geologically, efforts must be made to revive the area. One of the approaches is applying an indirect method, namely the geophysical method. One of them is the geoelectrical profiling method. Six lines are spread in the study area with a length of 70-105 m. The target is a cave filled with air because it is suitable as a tourist spot. Based on the measurement results, a very high resistivity value of more than 5,000 Ωm is suspected to be an air-filled cave. The cave area that is probably safe is about 120 m long with 1-3 m depth below the ground surface, 2-8 m width, and 2-6 m height. However, a safety assessment is necessary for feasibility so that the cave is worthy of being re-activated as a tourist spot.
Junior high school students preparedness toward earthquake in urban and rural areas in Pesisir Selatan
Authors: Salsabila R , Alfian A R , Rahman A 
Published: May 2023

Abstract
The earthquake on September 30th, 2009, damaged 35 schools in Pesisir Selatan, so student preparedness really needs to be improved to reduce fatalities and the impact of earthquake. This study aims to determine preparedness differences of junior high school students in urban and rural areas against earthquake in Pesisir. This study is quantitative with a cross-sectional design. The research was conducted in junior high school located in urban and rural areas in Pesisir Selatan in July-August 2021 with 84 students selected using the proportional systematic random sampling technique. Data collection was done through interview with questionnaire. The parameter employed was LIPI’s which consists of multiple facets such as knowledge, emergency response, early warning, and resource mobilization. Data were then analyzed using the Mann-Whitney test with α= 0.05 and CI = 95%. The results showed there were differences preparedness of junior high school students in urban and rural areas with p-value = 0.000. Therefore, the Government through the Health Office and Education Office, and regional disaster management agency can cooperate regularly and periodically regarding the provision of simulations/training and monitoring regarding disasters to students.
Vulnerability Assessment of non-engineered houses related to earthquake in West Pasaman District
Authors: Zakir Rahmat Fadli , Hakam Abdul , Istijono Bambang , Noer Melinda , Rahmadilla Hape Syafira 
Published: May 2023

Abstract
The earthquake on February 25, 2022, in West Pasaman resulted in damage to people’s houses as well as fatalities. The quake happened just under the Mount of Talamau, 18 km northeast of the city of Simpang Empat City, with a magnitude of 5.2 M. This earthquake was followed by small earthquakes that occurred until February 27, 2022. Damage to houses in the earthquake-affected area became the focus of attention in this research to assess the housing vulnerability related to the earthquake hazard. The vulnerability assessment of house buildings is critical in earthquake-prone areas because it can provide information about the impacts on the buildings. The vulnerability of house buildings is closely related to the potential for damage due to earthquake hazards. The benefit of the vulnerability assessment of house buildings is to arrange the mitigation action plan to reduce the level of damage to building structures. The method, in turn, can reduce the number of fatalities as well. Buildings with a high level of vulnerability to earthquakes are non-engineered or residential buildings that are built without considering essential factors in planning, such as the necessary technical requirements.
Broadband structured light using digital micro-mirror devices (DMDs): a tutorial
Authors: Perumal Leerin , Forbes Andrew 
Published: May 2023

Abstract
Laser beam shaping is a venerable topic that enjoyed an explosion in activity in the late 1990s with the advent of diffractive optics for arbitrary control of coherent fields. Today, the topic is experiencing a resurgence, fuelled in part by the emerging power of tailoring light in all its degrees of freedom, so-called structured light, and in part by the versatility of modern day implementation tools. One such example is that of digital micro-mirror devices (DMDs), for fast, cheap and dynamic laser beam shaping. In this tutorial we outline the basic theory related to shaping light with DMDs, give a practical guide on how to get started, and demonstrate the power of the approach with several case studies, from monochromatic to broadband light.