bluuebunny/crossref_metadata_2025_split huggingface dataset:
Land use change analysis and the impact on the streamflow of the Keureuto River
Authors: Alief M R , Khairullah Y , Fadhliani  
Published: March 2024

Abstract
The increasing of population is proportional to the natural resource’s exploitation. Over the past few decades, the activity has converted the natural land into agricultural and plantation fields, urbanized areas, and other types of use. In some watershed systems, land use conversion has reduced the system’s capability both in sustaining water resources and in preventing extreme runoff. Such is the case of the 302 km2 Krueng Keureuto Watershed which supports the water supply for the North Aceh District, both for irrigation and municipal use. Therefore, this study aims to investigate the land use change in the system and its impact on the streamflow. The land use is classified based on the Landsat satellite images of the year 2015 and 2021, using the Supervised Classification tool in ArcGIS. The impact is investigated using a Hydrologic Modelling System (HEC-HMS). The outlet is defined based on the Automatic Water Level Recording (AWLR) station downstream of the Keureuto River. A significant reduction of the forest is estimated at 27.67% in seven years. In contrast, the land use types such as urbanized areas, agricultural fields, and shrubs are increasing to 6.34%; 4.75%; and 5.75%, respectively. Based on the model simulation it is confirmed that the changes in land use have altered the river flow regime.
Study of the influence of raw water infrastructure performance on drinking water
Authors: Sudiarti S U , Andawayanti U , Siswoyo H 
Published: March 2024

Abstract
Water utilities are assessed on financial, customer service, operational, and HR performance, according to Government Regulation 122/2015. Environmental, operational, and physical factors impact cooling system performance. Local governments and water utilities assess water supply efficiency using distribution networks. In West Nusa Tenggara, researchers explored Lombok and Sumbawa. Water is abundant in Lombok but insufficient in Sumbawa. Despite the continual requirement for drinking water, this study concentrates on these two criteria since regional climates fluctuate. The former has superior local government water supplies, which affect Lombok and Sumbawa citizens’ health. This research outlines a single drinking water system’s two most important performance criteria. Researchers employ fuzzy c-means clustering, statistical regressive analysis, and questionnaire combinations for indeterminate parameters. The survey concluded that a water distribution authority has a good performance value if its intake and distribution network works effectively and the negative balance decreases. PDAM control will be less effective and the body less healthy if one portion fails, especially if fluctuations of water discharge. This research may result from an integrated drinking water collection and distribution performance model. The study found that water treatment plant performance, especially water discharge, increases water usage.
Planning For Kucica Residential Drainage System in South Tangerang City Using SWMM Modelling
Authors: Cahyono C , Wjaya D , Juliastuti  
Published: March 2024

Abstract
Planning an efficient drainage facility in residential areas is necessary to drain run-off water on the surface. To minimize the potential for inundation that can cause flooding. This research aims to design an efficient drainage system in one of the residential areas in BSD and to analyze the ability of drainage channels using the EPA SWMM 5.1 application for a 10-year return period. The results of this study for secondary channels with a maximum discharge plan of 0.101 m3/s can use a U-Ditch with dimensions of 30 cm × 40 cm, while primary channels with a maximum discharge plan of 0.288 m3/s can use a U-Ditch with dimensions of 40 cm × 60 cm. In this analysis only taking into account rainwater run-off from household sewage is not taken into account. In the main channel, using retention pond only can reduce around 12% of maximum discharge, so the alternative of flood prevention for this residential area can be implemented by using bio pore holes, which reduce 27.85% of maximum discharge. From these analyses, it can be concluded that the drainage system design can already accommodate the flood discharge, and adding retention pond does not affect decreasing flood discharge on the main channel too much.
Effect of material quality on cemented sand and gravel (CSG) dam slope design of Cibeet
Authors: Pribadi H , Juwono P T 
Published: March 2024

Abstract
The construction of the Cibeet Dam is crucial to mitigate downstream flooding in the Citarum River. Initially planned as an embankment dam with a 1:3.50 upstream slope, a 1:30 downstream slope, and a height of 47 meters, challenges arose due to foundation and earthquake considerations. The excessive requirement of embankment material at the dam site, which was insufficiently available, prompted the exploration of a more resource-efficient alternative. Consequently, a slimmer type of dam, specifically a Cemented Sand and Gravel (CSG) dam, was deemed necessary. The CSG dam, designed with minimal cement (80 kg/m3) and a mixture of sand and gravel (105.5 kg/m3), boasts a more upright slope, reducing material demand. This research examines the impact of material quality on the CSG dam slope. The finite element method assesses the dam’s stability using dynamic seismic forces. To achieve a stable dam slope design with existing materials, an extensive analysis was conducted on various slopes upstream and downstream, ranging from 1:0.70 to 1:1.20. The results indicate that a slope of 1:1.10 with a cement compound of 105.5 kg/m3 offers optimal stability. Implementing the CSG Dam effectively minimizes material requirements, mitigating the need for excessive exploration of material supplies.
Local wisdom-based flood early warning system: a case study on Glintung Water Street (GWS) Malang City
Authors: Sedyowati L , Yuniarti S , Sufiyanto  , Pratama F 
Published: March 2024

Abstract
A flood early warning system as part of flood risk management must be applied in a flood-prone area. This study aims to develop and examine a flood early warning system using an information and communication technology (ICT) appropriate to the local wisdom values of the Glintung Water Street (GWS) community, Malang City. This study used a descriptive qualitative research method. Data collection techniques include interviews, observation, and documentation/literature studies. The flood early warning system was developed using the SMS system. The warning information sent by the system consists of alert-1 for a water level of 0 cm - 20 cm, alert-2 for a water level of 20 cm - 30 cm, and alert-3 for a water level of 30 cm - 50 cm and probe sensors for electronic devices that play an important role in this system consisting of probe sensors as water level detectors, the GSM/GPRS SIM900 module, as the sending medium to the cellphone and Arduino which functions as the control system. Based on the research results, the design of a flood early warning system using the Probe Sensor combined with Arduino and the SMS Program is appropriate for the study area concerning the local wisdom values already embedded in the community.
Diversity induction with gamma-ray irradiation on Phalaenopsis amboinensis var. Common natural orchid generation M1V0
Authors: Hartati S , Samanhudi  , Sukaya  , Aji T A 
Published: March 2024

Abstract

Phalaenopsis is a popular genus in the Orchidaceae family. Phalaenopsis amboinensis orchid is an endangered natural orchid, so it needs to be preserved. Conservation of natural orchid Phalaenopsis amboinensis var. Common way is by increasing genetic diversity. This research aims to determine the characteristics and morphological diversity of Phalaenopsis amboinensis natural orchid irradiated gamma-ray results and without gamma-ray irradiation; this research was conducted in two places: the implementation of gamma-ray irradiation at the PAIR-BATAN Laboratory and in Matesih, Karanganyar with an average height of 450 m above sea level. The research was conducted from December 2022 to May 2023. The study used a simple design of one factor, the doses of gamma-ray irradiation with 5 levels: 0 Gy (R0), 7.5 Gy (R1), 15 Gy (R2), 22.5 Gy (R3), 30 Gy (R4). Each treatment contained five accessions. So, there are 25 experimental units. Observational data were analyzed descriptively by comparing observational data from Phalaenopsis amboinensis var. Common Generation M1V0 orchids irradiated with control plants. The results showed diversity in the morphology of the Phalaenopsis amboinensis var. Common orchid Generation M1V0 results from gamma-ray irradiation based on qualitative morphology with phenotypic observations, showing two orchid leaf shapes: oblanceolate and elliptic. There are accessions with fasciated root conditions.
Normative juridical analysis of strict liability in environmental cases
Authors: Purwanto E , Susanto  , Wiyono B 
Published: March 2024

Abstract
The Indonesian Supreme Court rejected the cassation and imposed a fine of IDR 199 billion on PT. Rambang Agro Jaya (RAJ), a subsidiary of Malaysia’s Kulim Berhad, for a 500-hectare forest and land fire case in Ogan Komering Ilir Regency, South Sumatra. This study aims to conduct a normative juridical analysis of the courts’ decision, holding PT. Rambang Agro Jaya was strictly liable for the environmental damage caused by the fire. The research reveals: (1) Central Jakarta District Court Decision No. 445/Pdt.G/2019/PN Jkt.Pst establishes strict liability and orders the Defendant to pay material losses totaling IDR 137.57 billion. (2) Jakarta High Court Decision No. 398/PDT/2021/PT DKI upholds the Central Jakarta District Court’s decision, reinforcing strict liability and increasing the total compensation to IDR 199.57 billion. (3) Supreme Court Decision No. 2196 K/PDT/2022 rejects PT. Rambang Agro Jaya’s cassation confirmed the Defendant’s unlawful actions and strict liability and imposed a material loss compensation of IDR 199.57 billion. The rulings signify a progressive step in enforcing environmental responsibility, with the substantial fine signaling a strict stance against ecological violations. The Supreme Court’s consistent rejection of cassation strengthens legal certainty and establishes a robust legal precedent for similar future cases, and underscores the significance of corporate accountability in promoting environmental sustainability.
Less optimized blue economy sectors in Joko Widodo era
Authors: Wiryawan R D , Murakabhi E C , Djarwono L F 
Published: March 2024

Abstract
According to the United Nations (UN), the Blue Economy is defined as an economy with several economic sectors and policies that exploit the ocean resources sustainably. This development concept is the continuation of the green economy that was conceived in 2012 by the UN. In Indonesia, the blue economy development concept became an alternative to the green economy in the governance of Joko Widodo era, considering that the green economy was considered detrimental because of its high cost and its exploitative way. The United Nation has defined many sectors that are key subjects in the blue economy. Indonesia has implemented the blue economy through six sectors and the most dominant sectors are marine capture fisheries, aquaculture and fish processing. The intention of this paper is to discover the unimplemented sectors in the Indonesian blue economy as previously programmed by the UN and to analyse its consideration. This paper uses a descriptive qualitative method to understand and analyse the real, complex social phenomena and presents them through the detailed narratives.
Estimation of carrying capacity and price discrimination using carrying capacity analysis and willingness to pay for sustainable tourism (case of Bukit Kehi, East Java, Indonesia)
Authors: Vibriyanto N , Utomo SJ , Azizah N 
Published: March 2024

Abstract

Bukit Kehi is one of the natural tourism in East Java. One of the factors that can influence tourists' decisions to travel is the natural scenery and comfort of tourist attractions which can be obtained by maintaining the condition of the tourist environment. Given that the number of visits during the peak season is more than the low season, it can affect the condition of the natural tourism environment which is prone to damage and can reduce the comfort of tourists, therefore the purpose of this study is to estimate the carrying capacity and price discrimination on natural tourism. This research was conducted by carrying capacity analysis and Willingness to Pay (WTP). The data used are primary data derived from interviews with tourists, tourism managers and secondary data from related documents or literature. The results showed that Bukit Kehi has a carrying capacity for recreational activities of 371 people / day or 11,130 people / month or 134,515 people / year. The ticket price that should be applied during peak season is IDR 8,000. Based on these findings, Bukit Kehi tourist attraction is still under carrying capacity and can increase the number of tourist visits to the maximum limit of the carrying capacity of the tourism destination.
Assessing regional food security: A spatial analysis of food carrying capacity in Baki Subdistrict, Sukoharjo Regency – Indonesia
Authors: Khabibur Rahman MS , Rohsulina Pranichayudha , Hidayat Agung 
Published: March 2024

Abstract
In Indonesia, addressing food security is challenged by a rapidly growing population, leading to increased consumption and diminished agricultural land availability due to ongoing land conversion. This study focuses on assessing the food carrying capacity in the Baki Sub-District as a critical component of regional food security. From a geographical perspective, the research employs spatial analysis to evaluate the food carrying capacity in the Baki Sub-District. Data collection involved the utilization of mathematical formulas, enabling a comprehensive analysis of the food carrying capacity. Spatial analysis was facilitated through a Geographic Information System (GIS). The findings reveal that a significant portion of the Baki Sub-District maintains a high food carrying capacity, particularly in the southern regions. However, areas proximate to Surakarta City, impacted by regional development, experience a reduction in food carrying capacity due to the conversion of agricultural land to residential use. This study contributes valuable insights into the spatial dynamics of food carrying capacity in the Baki Sub-District, providing essential information for regional food security planning.
Exploring Waste Processing Technology in Animal Husbandry Practices among Millennial Farmers in Sleman District
Authors: Wahyuni T , Setyono P , Handoko C T 
Published: March 2024

Abstract
Integrated sustainable agricultural systems prioritize the return of all generated byproducts to nature, aiming to prevent degradation of vital resources like land and water while minimizing environmental impact. This study delves into the adoption of waste processing technology within the domain of animal husbandry farming among millennial farmers in Sleman district. Utilizing qualitative and literature study methods, the research unveils the current practices of millennial farmers in the area regarding waste management in various animal husbandry categories. The findings indicate a proactive approach among millennial farmers, showcasing the implementation of technology in processing waste from different animal husbandry segments. In the case of large animal husbandry, waste is harnessed for both biogas production and organic fertilizer. Small animal husbandry operations exhibit a practice of repurposing waste into valuable organic fertilizer. Similarly, poultry farming operations in the region demonstrate a commitment to sustainability by converting waste into organic fertilizer. This research sheds light on the positive strides made by millennial farmers in Sleman district towards integrating innovative waste processing technologies into their animal husbandry practices, contributing to both environmental conservation and agricultural sustainability. This conclusion underscores the diversity in the strategies employed for the implementation of animal husbandry waste processing technology, with various approaches taken depending on the type of animal husbandry owned by millennial farmers.
Study of the removal of nitrate and dissolved iron pollutants from industrial wastewater to become raw water using nanofiltration
Authors: Slamet A , Firdaus A A F , Yuniarto A , Mussa R O , Said N I 
Published: March 2024

Abstract
Nowadays, industrial nanofiltration membrane technology is widely used, particularly when it comes to recovering and recycling water for preservation. This research is related to the processing of wastewater from one of the industrial areas in Indonesia into raw water using nanofiltration on a pilot scale. This research aims to identify the removal of nitrate and dissolved iron from industrial area wastewater through flow recirculation in nanofiltration and identify the effect of variations in wastewater concentration and variations in product recovery. The wastewater being treated is wastewater from an industrial area owned by PT. Jababeka Infrastruktur is composed of a ratio of 100% WWTP effluent, 9:1, 8:2, 7:3, and 6:4 between WWTP influent and effluent ratio. This study’s membrane module employs a two-stage membrane system and a spiral wound with model specifications NF2-4040. Recirculation is used in the reactor to process the material and provide cross flow. The results of the study stated that variations in concentration made a significant difference to the removal of nitrate and dissolved iron (p value < 0.05), but variations in product recovery the opposite response. The processed water meets the raw water quality standards for nitrate parameters, but not for dissolved iron parameters at processed water concentrations of 7:3 and 6:4.
Preparation and antimicrobial activity of solid soap from kefir cheese wastewater
Authors: Estikomah S A , Kurniawan  , Hanifa Dea , Wiranita R T , Husna A 
Published: March 2024

Abstract
All Soap made from chemicals causes side effects on the skin. making soap with natural ingredients kefir cheese wastewater whey) is safe for the skin and has antibacterial properties. The research aim was to produce solid soap-made kefir cheese wastewater, with determined physicochemical characteristics, and better antibacterial activity. The materials used in this research are cheese wastewater (whey). This research was making a kefir formula with the main ingredient of a varied concentration of whey added with turmeric. The solid soap kefir cheese whey contains olive oil, palm oil, VCO, sodium hydroxide, and variations of kefir whey. The characteristic test was conducted by determining free alkali, water content, pH, and foam height. The well diffusion method was applied to test the antibacterial activity. The results show that all formulas of solid soap from kefir cheese wastewater indicated that the quality test kefir whey meets the requirements established by SNI 3532: 2016 and ASTM-D 2002. Soap kefir whey cheese with variant dyes Curcuma Longa potential alternative to the cosmetic industry in anti-acne soap production.
Assessment of fracturing and blockiness of the Pshenychne gabbro deposit massif
Authors: Iskov Sergii , Korobiichuk Valentyn , Leonets Iryna , Levytskyi Volodymyr , Shlapak Volodymyr 
Published: March 2024

Abstract
Proper development of the deposit and the choice and use of effective technologies for block stone extraction are impossible without evaluating the structural indicators of the massif. It consists in studying the propagation of cracks in the array, orientation of the main crack systems, studying the anisotropic properties of stone, and predicting the yield of commercial stone blocks in the deposit. This allows both to increase the efficiency of block extraction and to reduce the loss of stone during its extraction, which increases the economic performance of field development. The assessment of fracturing and blockiness of the Pshenychne gabbro deposit was carried out based on the results of studying the core documentation of 11 exploration wells and the documentation of a pilot production quarry. Rose diagrams, pie charts, and fracturing plans were constructed in isolines, and crack systems common in the field were identified.
Comprehensive approach to the accounting and restoration of land resources disturbed as a result of military actions in Ukraine
Authors: Trehub Mykola , Trehub Yuliia , Dzhyha Vladyslava 
Published: March 2024

Abstract
The article proposes a comprehensive approach to the accounting and restoration of disturbed lands as a result of military operations in Ukraine, which requires careful analysis, planning and implementation of various measures aimed at restoring land resources and ensuring the sustainable development of land uses. The proposed approach requires joint efforts of the state, society, domestic enterprises and international partners.
Fault distance measurement method for wind power transmission lines based on improved NSGA II
Authors: Qi Entie , Zhang Qi , Liu Gang , Zhang Zimeng , Wang Minzhen , Song Zhijie , Zhong Caiming 
Published: March 2024

Abstract
A fault distance measurement method that is suitable for long-distance wind power transmission lines is proposed by this paper. By combining the voltage and current at both ends of the line during normal operation, a dynamic line parameter correction method based on improved NSGA II is proposed to ensure measurement errors caused by parameter changes are avoided. Based on the construction of the fault distance measurement function, a global optimization method that is based on adaptive golden section search is proposed, where only the power frequency measurement data at both ends of the bus is required and synchronization is not required for the measurement of fault distance. A large number of experimental results demonstrate that the method this paper proposes is highly adaptable, with a relative distance measurement error of less than 0.2 km, and high accuracy is maintained in distance measurement even with certain degrees of noise interference.
Optimal trajectory tracking of tractor-trailer wheeled platforms taken into account wheel dynamics
Authors: Nazemizadeh Mostafa , Kolahi Pouya Mallahi , Gandomkar Mohammad 
Published: March 2024

Abstract
Tractor-trailer wheeled platforms are recognized as articulated robotic systems which consist of a frontrunner active mobile platform (known as tractor) that pulls one or more passive platforms (known as trailers). Regarding to their novel features such as maximum load carrying capacity and minimum energy consumption, this category of mobile platforms is widely employed for conveying purposes and transportation. The presented article deals with path tracking optimization of the tractor-trailer platform using the indirect method of the optimal control. First, nonlinear motion relations of the modular platform are obtained considering kinematic constraints and inertia characteristics of the wheels. Then, the obtained dynamic equations are considered as constraints of the optimal problem, and as a result an appropriate objective criterion is determined for the optimal trajectory tracking. In the following, a proper solution for the optimal problem is developed and accordingly some simulations are presented. In view of the wheels dynamics, the obtained results reveal competency and applicability of the proposed procedure for the optimal tracking of the tractor-trailer wheeled mobile platforms.