bluuebunny/crossref_metadata_2025 huggingface dataset:
Ketrampilan Bahasa Jepang Bagi Karyawan PT. Java Agritech Semarang
Authors: Muryati Sri , Astuti Bekti Setio
Published: July 2023

This study aims to determine the Japanese language skills needed by employees of PT. Java PT. Java Agritech Semarang. This research is the basis for Japanese language training activities that will be carried out as a form of cooperation between PT. Java Agritech Semarang and Japanese Language Study Program, so that training can run effectively and efficiently. Needs analysis is important to be carried out so that teachers can determine the right material, teaching methods, and references and can answer employee needs. The population of this study were employees of PT JAT Semarang not Japanese language professionals. Survey, questionnaire and interview methods are used to obtain data on employee needs for Japanese which refers to Target Needs and Learning Needs. . The results showed that 92.8% of respondents needed mastery of Japanese. Specifically, the mastery needed is work-related vocabulary, basic grammar and expressions in communicating. This aspect has an important role in four language skills, namely listening, reading, speaking, and writing. Of the four skills, respondents sequentially need speaking skills, listening skills, writing and reading. Speaking and listening skills include the ability to convey and identify greetings, name and point objects, ask and understand questions and simple explanations in Japanese. Reading and writing skills are only needed by 24% of respondents, to read and write emails in Japanese.
Sebutan Gaijin untuk Orang Asing: Sebuah Gambaran Bagaimana Orang Jepang Memandang Budayanya Sendiri
Authors: Wibowo Robi , Putra Heddy Shri Ahimsa , Simatupang G.R. Lono
Published: July 2023

Foreigners in Japanese are called gaijin. There is debate among the Japanese themselves regarding the meaning of this word, some people do not interpret it negatively, some others say that the word should be avoided because it has a discriminatory meaning. This was then explored further in order to get an initial picture of the research. This study aims to describe how the term gaijin relates to the mindset of Japanese society. To achieve this goal, this research will reveal how the Japanese interpret the term gaijin. It also reveals the early history of the use of the term, and the relationship between the use of the term gaijin and the mindset of Japanese society. The theoretical assumption used in this study is the opinion of Sapir and Whorf which states that every society in a certain culture, with their own language codes, will represent the world in their own way. Research data were obtained from the internet and in- depth interviews with Japanese people. The results of the analysis show that the use of the term gaijin that they practice when referring to foreigners is not a conscious characterization, but is more appropriate to be understood as a linguistic representation that shows their own cultural ideology. The use of the term gaijin is not a representation of their awareness to directly discriminate against foreigners, but rather how the Japanese show their identity in viewing people outside of themselves and their group.
Perilaku Bullying dalam Drama 3 Nen a Gimi: Ima Kara Mina-san wa, Hitojichi desu, karya Komura Naoko dan Suzuki Yuma
Authors: Pratama Oktaviani Nindi , Lusiana Yusida , Kadafi Muammar
Published: July 2023

This research aims to analyze the forms of bullying and the factors that cause bullying in 3 Nen A Gumi: Ima Kara Mina-san wa, Hitojichi Desu drama by Komuro Naoko and Suzuki Yuma. The method used in this research is descriptive qualitative method. Screenshot of scenes and dialogues are used as data sources. This research is a sociological study of literature. The data retrieval method uses reading and note-taking technique. Data analysis techniques are presented descriptively. The theory used for the analysis is  theory of bullying by Coloroso. The conclusion of the analysis shows that in this drama there are four forms of bullying, including verbal bullying, physical bullying, relational bullying, and cyberbullying. The most common form of bullying is verbal bullying. Morever, there are two factors that cause bullying, that is peer factor and social environmental conditions.
Eksistensi Perempuan Pada Manga Arte Karya Okubo Kei (Kajian Feminisme Eksistensial)
Authors: Salsabila Farah Diva , Puspitasari Diana , Kadafi Muammar
Published: July 2023

This research begins with several problems found around women, one of which is about gender equality. Because of these conditions, the research was conducted with the aim of knowing how women struggle in achieving their existence. The method used in this research is descriptive qualitative. This research data uses dialogues and pictures taken from the manga Arte as data sources. The data retrieval method used is a reading and note-taking technique. Data analysis techniques are presented descriptively. This study uses Simone de Beauvoir's existentialist feminism theory. The results of the study show that women because of their otherness often get injustice in gender relations. In order for women to gain their own existence, women must fight back by carrying out four strategies of self-transcendence according to Beauvoir, namely working, becoming an intellectual figure, working to achieve social transformation, and rejecting the other. Through research from Arte's manga, it can be concluded that a woman who wants to achieve her existence is not an easy thing to achieve. Women who want to get out of the shackles of patriarchy do not always get a positive response, and it takes more effort and hard work to achieve that existence.
Pergeseran Penerjemahan Pada Teks Terjemahan Lagu Berbahasa Jepang Yang Dibawakan Oleh Andi Adinata
Authors: Fauzah Nunik Nur Rahmi , Hidayati Yanti , Gumelar Wawan Agung
Published: July 2023

(Translation Shift on Songs from Japan Into Indonesia by Andi Adinata) The purpose of this study was to find out which words experienced a translation shift and to describe the translation shift in the text of the Japanese song translation performed by Andi Adinata. The data is the translation of the lyrics of the song which is sourced from the song entitled 'Harusnya Aku' from Armada, 'Surat Cinta Untuk Starla' from Virgoun, 'Ceria' from J-Rocks, 'Munajat Cinta' from The Rock, 'Semua Tentang Kita' from Peterpan and 'Bukti' from Virgoun. The method is a qualitative descriptive method. Data collection was done by observing and note-taking methods. Data analysis was carried out using the translational equivalent method and the determining element sorting technique (PUP). In this study found as many as 45 data. Words that experienced a translation shift were 42 words and a total of 83 translation shifts, namely level shifts totaling 4 shifts and category shifts totaling 79 shifts. Of the 79 category shifts, there are 3 structure shifts, 25 words class shifts, 14 unit shifts and 37 intrasystem shifts. This study concludes that there are two types of translation shifts, namely level shifts and category shifts and there are four types of category shifts, namely structure shifts, class shifts, unit shifts and intrasystem shifts.
Multimodal Writing in The Spanish Classroom: A Pedagogical Tool to Empower and Heal from The Covid-19 Pandemic
Authors: Sanchez Ana
Published: July 2023

This paper explores the multimodal compositions of seven students in an intermediate Spanish class which took place during the Summer of 2021. The class met virtually by zoom due to the Covid-19 pandemic, which limited face-to-face interactions. The Covid-19 pandemic had a profound effect on people's lives around the world, causing not only physical health issues but also mental health problems such as stress, anxiety, and depression among others. Multimodal writing is a tool to empower students and help them heal from the trauma of the Covid-19 pandemic. In addition, multimodality allows students to produce texts that reflect their experiences, identity, and voices through the various modes of communication available on the internet. Even though writing has become an important language skill due to technology and all the social platforms, some scholars don’t give the same importance to writing than to other skills in language learning (Valdez et al., 1992). Multimodal texts combine two or more modes of communication, such as written language, spoken language, visual, audio among others (The New London Group, 1994). As Edwards-Groves (2011) strongly stated “A contemporary focus on writing highlights how technology use also enables new possibilities for creativity – new creativities – in multimodal text construction and meaning making (p. 51).
Effects of High-Impact Learning Practices: A Review
Authors: Arıkan Simla , Dochy Filip , Segers Mien
Published: July 2023

One of the biggest concerns that has come to the fore in the field of education recently is whether colleges and higher education institutions offer educational programs providing their students with the basic skills and competences necessary to meet the requirements of the globalising and rapidly changing world and the accordingly changing labour market. To answer this question, this review investigated the effects of 11 high impact practices (HIPs) based on single HIPs (RQ1), limited combinations (LC) of HIPs (RQ2), and extended combinations (EC) of HIPs (RQ3). For this study, selected 56 studies were analysed by narrative analysis. As a result, 18 different positive effects were determined on which single HIPs enhanced. Among these effects critical thinking, communication and collaboration were the most promoted ones. In addition, fourteen LC of HIPs with 17 different positive effects were detected. Communication, collaboration and career related opportunities were the most common effects of LC of HIPs. Furthermore, 16 different positive effects of EC of HIPs can be grouped under five main headings as achievement-focused effects, motivation-focused effects, competence development-focused effects, personal development-focused effects and learning process-focused effects. EC of HIPs have the most competence/skills development-focused effects with their features of developing transformative learning, leadership skills, student and faculty/peer/community interaction, critical thinking, time management and job-readiness skills. Also, the most common effects of EC of HIPs were increased student engagement and motivation, increased critical thinking, higher academic achievements, higher graduation rates and retention.
Harnessing the Power of Infographics in Education
Authors: Sobhana Nandyal Panduranga
Published: July 2023

Infographics are visual representations of knowledge or data meant to present complex information quickly and clearly. They use pictures, diagrams, maps, charts, graphs, and statistics to present information. They often prove effective in educational contexts as they use imagery to highlight, explain, or enhance text-based information. They capture attention, convey information, and encourage data retention among learners. This study was an ardent effort towards using static infographics in English linguistic contexts to know the students’ perceptions and attitudes as infographics is still a new trend in education.  The sample comprised 70 female undergraduate students of the Department of English, Samtah University College, Jazan University. A structured questionnaire was adapted to meet the requirements of the study. The results revealed that using infographics as a teaching strategy motivates students to become active participants in the classes to comprehend the relationship between the graphics and data. Using infographics as a learning strategy inspires students to learn from their peers and as an assessment tool,  drives them to introspect themselves to improve their oral presentations/assignments/course projects. The students develop critical thinking, analytical ability, logical reasoning, collaborative learning, and information analysis. Summing up this study, it is recommended that university students should enhance their digital awareness and willingness to use infographics in learning contexts. It is suggested that if the teachers support, facilitate, and encourage Saudi students to use infographics they would become autonomous learners and be successful in their academic endeavors.
ON THE RATIONALIZATION, SURVEILLANCE AND ALIENATION POTENTIAL OF ONLINE DISTANCE EDUCATION IN THE PERIOD OF COVID-19: A QUALITATIVE RESEARCH WITH ACADEMICS IN TURKEY
Authors: CİZMECİ ÜMİT Esra , AY Aysel
Published: July 2023

The COVID-19 pandemic is an epidemic that has led to many changes and transformations in individuals’ lives, which may even be called revolutionary. The most significant impact of the pandemic is causing high and permanent digitalization in every area of daily lives, from shopping to working from home, from participating in virtual events to education. In many countries of the world, within the scope of total closure measures, online education has been started at all education levels, and in this sense, experiences that are similar or different at some points have been gained. Online education experience in higher education has displayed rationalization in education and alienation from the profession due to the surveillance and supervision of academicians and the characteristics of the online environment. In this study, which was prepared with this framework at the center, in-depth interviews were conducted with 16 academicians working at universities in different regions of Turkey. According to the findings obtained from the interviews, online education in higher education creates problems such as surveillance, rationalization, and alienation for Turkish academicians. The details of these experiences achieved results, and recommendations for future education models will be discussed throughout the article.
A Tale of Two “Sisikus”: The Evolving Trajectory of the Anglophone Crisis in Cameroon
Authors: Fon Nguh Nwei Asanga , Formella Collins Nkapnwo , Achu Nancy Ngum
Published: July 2023

Cameroon has been plunged into a devastating civil conflict since December 2017 when President Paul Biya declared war on secessionists after the killing of four soldiers and two police officers in the South West Region. This paper approaches the Cameroon Anglophone Crisis from the theoretical premise of remedial secession. It argues that the evolution of the crisis from a moderate return to federalism pursued by “Sisiku” Agbor Felix Nkongho to the radical secession espoused by “Sisiku” Julius Ayuk Tabe can be understood within the framework of remedial secession. The cogency of this argument is examined against efforts made by the Cameroon government to tackle the crisis and the concept of territorial integrity. This paper concludes that the protracted nature of the conflict reflects the theoretical impasse between remedial secession and territorial integrity.
Terrorism on the rise – What can WCA countries do to combat difficulties with international trade?
Authors: Neszmélyi György Iván , Hrabovszki Dorottya , Hrabovszki Ágnes Zsuzsa
Published: July 2023

In the last 5 years, the center of gravity of terrorism has shifted from the Middle East and North Africa (MENA) region to sub-Saharan Africa. As of 2018, this region had the highest number of fatalities and the greatest material damage. This paper assesses the situation of the countries most affected by terrorism in the WCA (West and Central-Africa) region by examining economic complexity, the costs of cross-border trade and corruption. The AEO (Authorized Economic Operator) program is a means of ensuring the security of international supply chains while simultaneously facilitating the cross-border flow of goods. By 2020, 97 countries in the world had operational AEO programs, but only one country in the WCO (World Customs Organization) WCA region had implemented one. The threat of terrorism is very high in seven countries of the region: Nigeria, Burkina Faso, Cameroon, Democratic Republic of Congo, Niger, Chad and Mali. As a result of the evaluation, it can be concluded that these countries need mechanisms to facilitate international trade and would benefit from the implementation of the AEO program.
Stakeholders' Perspectives About Cultural Strategies to Support PrEP for Latino Sexual Minority Men
Authors: Zapata Juan Pablo , Avila Andres Alvarado , Hurtado Manuel , de St. Aubin Ed , Rodriguez-Diaz Carlos E. , Robles Gabriel
Published: July 2023

Compared with non-Latino White sexual minority men, Latino sexual minority men (LSMM) have lower engagement with HIV pre-exposure prophylaxis (PrEP) and likelihood of discussing PrEP with a health care provider. The overall goal of the current study was to collect data from community stakeholders to inform the integration of culturally relevant factors into an empirically supported PrEP prevention program. Between December 2020 and August 2021, 18 interviews were conducted with 18 stakeholders with experience delivering health and social services. Themes identified are: (1) stakeholders' perspectives of new HIV infections among LSMM; (2) stakeholders' perspectives of general cultural variables; and (3) the development of culturally tailored programs. Our findings demonstrate how culturally competent stakeholders can leverage their established rapport and trust to reduce the negative effects of machismo and/or homophobia in the Latinx community to promote HIV prevention.
Solidification and stabilization of mercury-contaminated tailings in artisanal and small-scale gold mining using tras soil
Authors: Rachman Ranno Marlany , Mangidi Uniadi , Trihadiningrum Yulinah
Published: July 2023

Artisanal and small-scale gold is known to be sources of mercury pollution. This mercury contamination occurs when gold is isolated by the amalgamation method, contamination occurs. Mercury pollution in small-scale artisanal gold mining in the Kulon Progo area of Yogyakarta, the lowest tailing content was 164.49 mg kg-1, and the highest was 383.21 mg kg-1. This value exceeded the quality standard stipulated by Indonesian Government Regulation 22 of 2021 of 75 mg kg-1. The technology that can control pollution is stabilization/solidification (S/S). This research aimed to determine the optimum composition of the tailings mixture with tras soil. Variations in the design of tras soil with tailings were 100:0, 90:10, 80:20, 70:30, 60:40, 50:50, 40:60, 30:70, 20:80, and 10:90. The results showed that the optimum tras: tailings soil composition was 90:10, with a compressive test of 31 t m-2. Toxicity Characteristic Leaching Procedure (TCLP) was 0.0033 mg L-1 according to the quality standard of Indonesian Government Regulation no. 22, 2021, with a value of 0.05 mg L-1. The compressive strength results follow the quality of the US EPA of 35 t m-2.
Mapping heavy metals accumulation in conventional rice farming system at Banyumas Regency of Central Java, Indonesia
Authors: Ahadiyat Yugi R , Fauzi Ahmad , Herliana Okti , Hadi Sapto Nugroho
Published: July 2023

Rice grains produced in the conventional system are a prime source of heavy metal exposure in the human body leading to various health problems. The objective of this study was to assess heavy metals concentration in soil and rice grain under the conventional rice farming system in Banyumas, Indonesia, the pollution index, and the bioaccumulation factor. There were thirty-seven samples collected based on soil type, elevation, and irrigation system. The heavy metals level in soil ranged from 2.7 to 39.92 ppm of Pb, 0.11 to 3.01 ppm of Cd, and 4.79 to 61.32 ppm of Cr. Pb and Cr accumulation levels were below the maximum permissible concentration (MPC). A different result in Cd exceeded the MPC in 56.75% of sampling sites. Rice grain showed a high accumulation in Pb (6.85 ppm) and Cr (5.73 ppm) that exceeds the maximum standard. Cd exceeded 24.32% of sampling sites with an average of 0.54 ppm. The Pollution Index (PI) was medium in Cd and low in Pb and Cr. The Bioaccumulation Factor (BAF) of heavy metals in rice was Cd>Pb>Cr with averages of 0.64, 0.53, and 0.30, respectively. A high correlation resulted in Pb and Cd in soils and rice grains. Remediation is must done to reduce the heavy metals accumulation in soils and rice grains for environmental and health safety to prevent further contamination.
The potential of legume cover crops and soil microbes for gold mine tailings revegetation
Authors: Dewi Triyani , Sukarjo Sukarjo , Handayani C O , Hindersah Reginawanti , Waas Edwen D , Kalay A M , Zu’amah Hidayatuz
Published: July 2023

Mercury (Hg) is commonly utilized in artisanal gold mining on Buru Island; the Hg-contaminated tailing possibly contaminates the agricultural land nearby. In general, tailings contain very low organic carbon and plant nutrients but are high in mercury and have extreme soil acidity. The objective of this study was to observe the growth of various legume cover crops (LCC) and the change of Hg in tailing inoculated with Azotobacter-Trichoderma. The field trial was conducted on Buru Island of Maluku by using a split-plot design with three replications. The main plot was LCC species, composed of Centrosema pubescens (CP), Mucuna sp. (MC), and Crotalaria sp. (CR); the subplots were microbial inoculants composed of two formulations of Azotobacter-Trochoderma inoculants. The results showed that the Mucuna sp. and consortia Azotobacter-Trichoderma (2:1) had the highest survival rate in the tailings and Hg uptake by 8.83 mg kg-1 per plant. Consortia Azotobacter-Trichoderma inoculant with the composition of 2:1 (v:v) was able to increase soil pH, total bacterial population, LCC biomass, and Hg uptake by LCC plants. The highest Hg removal effectivity was observed in the plot treated with Crotalaria sp. and in a plot with Azotobacter-Trichoderma (2:1), which was 34.0% and 33.6%, respectively.
Heavy metals content in sweet potato (Ipomoea batatas L.) grown on soil contaminated by gold mine tailings with composted cow manure amendment
Authors: Noviardi Rhazista , Karuniawan Agung , Sofyan Emma Trinurani , Suryatmana Pujawati
Published: July 2023

Artisanal gold miners usually dispose of gold mine tailings in storage ponds or agricultural land used for farming. However, the gold mine tailings still contain heavy metals such as cadmium, copper, lead, and zinc and can lead to bioaccumulation in food chains. This study investigated the influence of composted cow manure as organic fertilizer on heavy metals (Cd, Cu, Pb and Zn) content in sweet potatoes grown on soil contaminated by gold mine tailing. The MZ119 clone sweet potato plants were grown on soils added with mixtures of gold mine tailings at ratios of 0% (control), 30%, 50%, 70%, and 100% (w/w), and composted cow manure (0, 250, 500, and 750 g/10 kg of soil). The results showed that the higher the ratio of gold mine tailings to the soil, the higher the accumulation of metals in sweet potatoes. According to the translocation factor (TF) value, heavy metals (Cd, Cu, Pb and Zn) accumulated higher in the shoots than in the roots of sweet potatoes. Accumulation of heavy metals in sweet potato occurred in the following order: Zn>Cu>Pb>Cd. This study recommends that sweet potatoes could be used for the phytoremediation of heavy metals (Cd, Cu, Pb and Zn) in polluted soils, but the plants may not be used for consumption.
Socio-economic baseline, economic feasibility study and processing activities ASGM in Obi Island, South Halmahera District, North Maluku Province, Indonesia
Authors: Puspita Angella Natalia Ghea , Sudiyanto Yanto , Haryanto Irwan , Madra Quinta Nadya
Published: July 2023

Artisanal and Small-Scale Gold Mining (ASGM) is mining of gold deposits with simple physical and chemical characteristics using simple equipment and technology. In 2005, total mercury release in the environment in ASGM was more than twice from this sector, around 35% of total mercury, with an annual estimate at 727 tons, becoming the largest global resource of anthropogenic mercury release. In Indonesia, total mercury released to the environment is estimated at 340 metric tons per year and also among the top 3 global emitters of mercury, with 57.5% from the ASGM sector, where 60% is being emitted to air, 20% to water, and the remaining 20% to land. The location of artisanal and small-scale gold mining (ASGM) in this study are in Anggai village and Air Mangga village in Obi sub-district, South Halmahera district, North Maluku Province. Amalgamation has been the preferred method for treating the gold ores in both Anggai and Air Mangga Villages. The methodology provides a suggested approach for collecting and analyzing data and guidance for analyzing policy, regulatory, and institutional aspects and health aspects in the ASGM sector, mainly covering the Socio Economy ASGM research methodology. An assessment of the practicality of a proposed plan or project is also called Feasibility Study. The objective of this research was to describe the socio-economic impact and feasibility of gold processing of ASGM in Obi Island, South Halmahera district, North Maluku Province.
The prediction of land use and land cover change and its impact on soil erosion and sedimentation in the Musi Hydropower-Plant catchment area in Bengkulu Province
Authors: Sukisno Sukisno , Widiatmaka Widiatmaka , Purwanto Moh. Yanuar Jarwadi , Noorachmat Bambang Pramudya , Munibah Khursatul
Published: July 2023

The Musi Hydropower-Plant catchment area is susceptible to soil erosion and sedimentation. Therefore, this research aimed to predict land use and land cover changes (LULCC) as well as their impact on soil erosion and sedimentation in the Musi Hydropower-Plant catchment area. The prediction of LULCC was calculated using Land Change Modeler module on IDRISI Terrset, while soil erosion and sedimentation were estimated with the Revised Universal Soil Loss Equation (RUSLE) and Sediment Delivery Ratio (SDR) models. The result showed that forest cover and paddy fields decreased significantly from 18.580 ha and 4.044 ha to 12.907 ha and 2.019 ha, respectively, in the periods of 1993 to 2019 and were predicted to reduce until 2032. Meanwhile, the built-up area and dry agricultural land increased from 818 ha and 2.116 ha in 1993 to 2.229 ha and 5.778 ha in 2019, which is expected to increase until 2032. The estimation of soil erosion rate also gave an increase from 75 t/ha/year to 113 t/ha/year, continuing to reach 122 t/ha/year until 2032. The escalation of soil erosion rate contributed to the change of sediment yield from 68.048 t/year in 1993 to 103.190 t/year in 2019,which is estimated to reach 111.028 t/year. These results are expected to be used by decision-makers and policymakers for the operation of the Musi Hydropower-Plant and the catchment area maintenance.
Land management semi-arid archipelago based on water carrying capacity: Studies on Labuan Bajo, East Nusa Tenggara
Authors: Muchtar Farah Syuraih , Hasibuan Hayati Sari , De Rozari Philiphi
Published: July 2023

Archipelago areas have high marine tourism resource potential, so they are often exploited for tourism needs. The characteristics of the Labuan Bajo region in the form of islands with geomorphological conditions in the form of hills have the potential to reduce the carrying capacity of the environment. Regional development in Labuan Bajo, classified as a semi-arid area for tourism purposes, can potentially cause a clean water crisis. This study aimed to analyze the environmental carrying capacity related to water availability to support the development of the Labuan Bajo region to become a super-priority tourism destination. The research method used is quantitative in the form of spatial analysis, literature studies, and water-carrying capacity analysis based on the Decree of the Minister of Environment and Forestry No. 297 of 2019. The research data were obtained from field observations and government agencies. The results show that the carrying capacity of water in 56.87% of the area in West Manggarai Regency has a deficit status. Most areas experiencing a deficit are on the mainland of Flores Island, especially in the urban area of Labuan Bajo. This is due to low rainfall, low soil ability to absorb water, and high anthropogenic activity from both local residents and tourism activities. In addition, the content of salinity, detergent, and BOD (biological oxygen demand) in groundwater samples in the urban area of Labuan Bajo has exceeded the water quality standard threshold. The results of this study can be considered for policy directions related to land use for regional development in semi-arid island areas.
The evaluation of land use cover changes through the composite approach of Landsat 8 and the land use capability index for the Bedadung watershed
Authors: Basuki Basuki , Hermiyanto Bambang , Budiman Subhan Arif , Alfarisy Fariz Kustiawan
Published: July 2023

Land use changes become a problem that contributes to the decline in the watershed function and performance. Bedadung watershed divides Jember Regency, which has upstream from Mount Raung and a downstream Indonesian Ocean. During the last ten years in Jember, there has been a flood from the overflow of the Bedadung river, which is unable to accommodate water from upstream. It is alleged that the cause of flooding in upstream of the Bedadung watershed is land cover and land capability that has changed. The purpose of this study was to assess land use changes using a composite approach to Landsat 8 imagery and land capability index for the upstream of the Bedadung watershed. The results showed that land cover of the Kesambi sub-watershed during 1995-2020, forest decreased by 34.74%, settlements and open land decreased by 47.25%, dry land increased by 120%, while plantations and rainfed rice fields were fixed. The decrease in forest area can disrupt the water cycle, thereby increasing runoff volume and water discharge, causing flooding downstream of the Bedadung watershed and upstream of the Bedadung watershed. Land capability evaluation of the upstream of Kesambi sub-watershed, area of Bedadung watershed was mostly in class III, covering 5782.9 hectares (85.53%), class IV covering 214.8 hectares (3.18%), class VI covering 379.7 hectares (5.62%), and class VII covering 383.9 hectares (5.68%) with limiting factors of effective soil depth, land slope/slope, erosion sensitivity, and drainage. Areas with class III land capability covering land mapping units 1, 2, 3, 6, and 7 can be utilized as agricultural with good conservation technology, while land mapping units 4.5, and 8 are only capable for forest areas.
Developing energy production from Eucalyptus urophylla plantation in dryland ecosystem at East Nusa Tenggara, Indonesia
Authors: Sadono Ronggo , Wardana Wahyu , Idris Fahmi , Wirabuana Pandu Yudha Adi Putra
Published: July 2023

Forest rehabilitation of Timor Island's dryland ecosystems using eucalyptus plants plays an important role in improving land cover but also in mitigating climate change and providing an alternative renewable energy source. The aim of this study is to explore the enormous energy storage potential of eucalyptus plants for commercial purposes using a high spatial resolution remote sensing approach. The Pléiades satellite imagery acquired on 10/09/2021 covering ca. 27 ha study area managed by Timor Tengah Selatan Forest Management Unit was used to identify the density of eucalyptus plants using Normalized Difference Vegetation Index (NDVI) values greater than 0.699. The density of eucalyptus plants is classified into low, moderate, and high tree density with NDVI values greater than 0.699 to 0.765, greater than 0.765 to 0.833, and greater than 0.833 to 0.901, respectively. The total potential energy production of the study area was estimated using a combination of assumed eucalyptus tree density, the calculated area of each density, and the average energy storage of individual trees. The results showed that the density of eucalyptus trees was classified as low, moderate, and high, with coverage areas of 6.8 ha, 12.9 ha, and 3.0 ha, respectively. The potential energy production of low, moderate, and high density approaches 1,103,432.33 MJ; 5,522,999.19 MJ; and 2,120,715.04 MJ, respectively, with a total estimated energy storage of 8,747,146.57 MJ. This obtained number of potential energy estimations indicates that forest rehabilitation of dryland ecosystems through eucalyptus plantations has a promising future as an alternative renewable energy source.
Strategies of water flow treatment of Paringin Pit Lake to meet wastewater discharge compliance
Authors: Suhernomo Suhernomo , Fatah Luthfi , Saidy Akhmad Rizalli , Priatmadi Bambang Joko , Noor Ihsan , Triwibowo Didik
Published: July 2023

Coal mining by the open-pit mining method creates the formation of a pit lake. The ex-mining site, over time, was gradually filled with contaminated water and must be returned to the water quality standard of compliance level. With proper treatment, the pit lakes have the potential for several benefits and subsequent uses. This study aimed to analyze the existing condition of the Paringin Pit Lake at South Kalimantan by identifying the quality of the water flow, and it is compliance with the parameter threshold values. The results showed that the pit lake water management had been carried out supported by good management of the catchment area and was indicated the stable category by geology technical study. The success of its revegetation processed in the area was shown by an erosion study in which the result was a very low-level category. No less important is the management of runoff water both in the quantity of water balance control and consistent water quality treatment to meet the quality standard values that have been set. The Paringin Pit Lake water management strategy is a form of activity that demonstrates compliance with good and responsible mining principles to support sustainable development that can serve as a good reference and example for other mining activities in terms of mine closure preparation.
Community resilience to natural resource vulnerability due to sand mining through the application of Integrated Farming System (IFS)
Authors: Handono Setiyo Yuli , Hidayat Kliwon , Purnomo Mangku , Toiba Hery
Published: July 2023

Changes in natural resources have presented major problems for farming communities in rural areas. In general, farmers diversify their livelihoods in the non-agricultural sector without paying attention to the impact on the availability of natural resources in the future. Sand mining activity has become one of the short-term solutions for farming communities in rural areas. As a result, a problem such as land degradation occurs in the village, thereby generating negative impacts on the availability of nature for the next generation. This study aimed to analyze the causes of land degradation and describe the Integrated Farming System (IFS) as a solution to address the land degradation problem in Bambang Village, Wajak District, Malang Regency. This study applied a qualitative case study research design, and the research methods included in-depth interviews with 40 informants, observation, and Focus Group Discussion (FGD). The location of this study was determined by purposive sampling, considering that Bambang Village is one of the villages affected by land degradation due to sand mining. The results of the study revealed that land degradation was due to the vulnerability of the farming community; thus, another alternative was proposed to utilize part of the land (20%) as a sand mining area without neglecting environmental preservation as a reward for environmental services. In addition, IFS and the actors as ecopreneurs were considered as alternative solutions to meet the needs and to prepare the farming community resilience through ecological preservation by sustaining the ecosystem balance. In practice, IFS requires integration among stakeholders, farmers and concerned institutions.
A GIS-based multi-criteria evaluation of landfill site selection in the region of Hodna, Algeria
Authors: Magoura Abderazak , Dehimi Salim , Redjem Ali
Published: July 2023

In Algeria, solid waste management (SWM) is considered a major problem; most of this waste is dumped in landfills without any control. The Algerian authorities have developed a national strategy for the integrated management of urban solid waste by 2035 by working on the implementation, development and equipping of technical landfill centers (TLC). Therefore, the aim of this study was to help local authorities in choosing the optimal locations for the completion of the proposed TLC between municipalities. This research used a combination of the multi-criteria decision aid (MCDA) and geographic information systems (GIS). It combines two aggregation methods: Linear Combination of Weights (WCL) and Criteria Weighting. The analytical hierarchy process (AHP) pair-wise comparison method was applied for assigning weights to the 11 criteria that were divided into environmental, social, and economic criteria according to previous studies in the field and the characteristics of the HODNA area. The results showed that 22.56% is the most suitable location for a landfill site, especially on the southeastern side, while 20.70% was suitable and 18.40% was moderately suitable. Finally, the process of assessing the spatial suitability of public emptying sites based on the results obtained in the final digital map,4.76% of the landfill sites are located in inappropriate areas, 14.29% are located in less suitable areas, 33.33% are located in suitable areas, 33.33% are located in moderately suitable areas and 14.29% are located in very suitable areas.
Spatial distribution of landslide potentials and landslide vulnerability in Sukawana and Awan Villages, Kintamani District, Bangli Regency, Bali Province
Authors: Sumarniasih Made Sri , Dewi I Gusti Ayu Sintya , Diara I Wayan
Published: July 2023

Landslide is one of the disasters that often occurs in Indonesia. Bangli is one of the areas in Bali with a high potential for landslides, especially in Kintamani. This study aimed to identify the potential and vulnerability of landslides in Sukawana and Awan Villages, Kintamani District, Bangli Regency. This study used survey and scoring methods according to the Natural Disaster Center at Gadjah Mada University for the parameters that cause landslides, namely, landform, rainfall, slope, geological structure, land use, and soil type. The landslide potential in Sukawana Village is low landslide potential with an area of 71.97 ha (1.81%) in Banjar Kubusalya, a medium potential with an area of 2,198.07 ha (55.30%) in Banjar Kubusalya, Banjar Sukawana and Banjar Paketan and high potential with an area of 932.81 ha (23.47%) located in Banjar Kuum and Banjar Sukawana. Awan Village has medium potential with an area of 772.20 ha (19.43%). For areas with high vulnerability, settlements are 110.96 ha (69.97%) in Sukawana Village, and the road network is dominated by local roads along 28.82 km (34.81%), which are in Sukawana Village.
Substantiation of the technology of mineral extraction from the bottom of the continental shelf with an autonomous underwater vehicle
Authors: Kislyakov Victor Evgenyevich , Katyshev Pavel Viktorovich , Linkov Yaroslav Evgen`evich , Sharova Alexandra Vadimovna , Lopatina Anna Nikolaevna , Kirsanov Aleksandr K
Published: July 2023

The extraction of mineral resources from the bottom of the continental shelf is presently becoming very promising in terms of their current depletion on the continents. However, the development of the mineral resource base of the world ocean requires the creation of specialized equipment and technological schemes for its use. Such equipment should ensure safe, environmentally friendly, trouble-free operation in difficult hydrosphere conditions. One of the innovative ways of such development is the use of autonomous mining vehicles. The most energy-consuming part of the work of these vehicles is the process of lifting the loaded vehicle to the surface. This article discusses the optimization of energy costs for lifting an autonomous mining vehicle from the bottom of the continental shelf with the use of gases formed during the detonation of explosives.
Modeling the impact of land use/land cover change on soil erosion: in Suluh River Basin, Northern Ethiopia
Authors: Entahabu Hailay Hagos , Minale Amare Sewnet , Birhane Emiru
Published: July 2023

The Suluh river basin is subjected to soil erosion due to land use and land cover change. Yet, the impact of land use/land cover change soil erosion has not been applied in the study area. Thus, the current study focused on the modeling of the impact of land use/land cover changes on soil erosion in the Suluh river basin, the northern highland part of Ethiopia. Landsat image data sources were used to achieve the objectives. Ancillary data was also used. The nearest neighbor's fuzzy way of classification and the land change modeler for modeling, and the revised universal soil loss equation model for estimating the soil erosion rate were employed. Both qualitative and quantitative data were analyzed qualitatively and quantitatively. The study's findings confirmed that cultivated land, bare land, and built-up areas significantly increased while areas occupied by natural vegetation such as forest land, shrub lands, and grazing lands decreased at a rapid rate in between 1990 to 2018. The predicted results suggest the continuation of the trend up to 2048 if business as usual is continued. The annual mean of soil lost in the study area was about 36.31, 43.32, and 47.78 in the years 1990, 2002, 2018, and will be 56.54, and 71.62 tons per hectare per year in 2028, and 2048, respectively. When we consider 15 t ha−1 year−1 as the maximum tolerable soil loss (TSL) rate for ease of presentation, the areas above the TSL have increased from 88.3% in 1990 to 88.6% in 2002 and to 89.6% in 2018, and are expected to increase to 89.9% and 99.8% in 2028 and 2048 periods, respectively. Thus, land use and land cover change information and its impact on soil erosion should be taken under consideration by land use planners to apply sustainable land management activities in the Suluh river basin.
Heavy metal contamination of Batanghari River, Jambi, Indonesia: determination based on sediment enrichment factor value
Authors: Badariah Badariah , Sukmawati Nisa , Heraningsih Sarah Fiebrina , Rainiyati Rainiyati , Riduan Ahmad , Putri Riski Dwimalida
Published: July 2023

Batanghari River is the primary source of water for the people of Jambi. Batanghari River’s condition nowadays is worrying because its color is no longer clear. This research focused on determining the content of heavy metals in the Batanghari River's water and sediment. The conducted analysis is an ICP-MS analysis to determine the level of heavy metal (Cu, Cr, Co, Cd, Hg), and an enrichment factor calculation is conducted to determine the source of pollution. The enrichment factor value from the Batanghari River sediment sample declined with the following sequence Cd>Hg>Cu>Cr>Co, in 10 pinpoint locations. These indicate a high degree of anthropogenic activities along the Batanghari River which become the source of heavy metals entering the Batanghari River. The average concentration of heavy metals in the Batanghari River showed that the metal concentrations of Cd, Cu, and Hg are higher than the quality standards that have been set, whereas the metal concentrations of Cr and Co are still by the quality standards that have been set in PP 22 the year 2021.
Spatio-temporal of landslide potential in upstream areas, Bali tourism destinations: remote sensing and geographic information approach
Authors: Diara I Wayan , Wiradharma I Ketut Agus Wahyu , Suyarto R , Wiyanti W , Saifulloh Moh
Published: July 2023

Upstream Bali has tourist destinations with beautiful natural panoramas such as mountains, forest areas, and lakes. Characteristics of the area with steep slopes, high rainfall, and altitude above 1,500 masl. The area is inseparable from the threat of disasters, such as landslides, especially in the Baturiti District. This area often experiences landslides but has not been mapped spatially. Mitigation efforts are needed to minimize the impact of landslides. This study aimed to determine the potential for landslides and their distribution in different periods, namely 2000, 2010, and 2020. The scoring method considers four parameters: rainfall, slope, soil type, and vegetation density, using ArcGIS 10.8 Apps. Parameters extracted from remote sensing data include Landsat with ETM+ and OLI sensors, rainfall from the CHIRPS satellite, and slopes from DEMNAS. Geographic Information System (GIS) data includes soil types. Another role of GIS is to quantify raster data to build a landslide potential prediction model. Baturiti Subdistrict has a low to high potential for landslides, which are administratively distributed in Candikuning, Baturiti, Antapan, Batunya, and Bangli villages. The landslide potential in the high category in 2000, 2010, and 2020 respectively, is 70.12 ha (1%), 597.05 ha (5%), and 39.12 ha (1%). Based on the findings of this study, the leading cause of landslides is high rainfall followed by reduced vegetation density. Other factors include steep slopes (>45%) and soil types of Andosol and Regosol.
Modelling of mechanical roots on slope stability
Authors: Fata Yulia Amirul , Hendrayanto Hendrayanto , Erizal Erizal , Tarigan Suria Darma , Katsumi Takeshi
Published: July 2023

Root system mechanical reinforcement through root-soil cohesion on slope stability is important. However, the root cohesion of Tectona grandis, Maesopsis eminii, and shrubs (Chromolaena odorata) on slope stability is rarely studied and modelled. This study aimed to model the mechanical effect of vegetation through root cohesion, namely teak (Tectona grandis), Maesopsis eminii, and shrubs (Chromolaena odorata). The study was conducted in a simultaneous landslide on January 1, 2020, that dominantly occurred on vegetated slopes of Sukajaya District, Bogor Regency, West Java. The Wu model's root cohesion (CR) was modelled on slope stability using a modified Bishop model. The modelling used the data from field and laboratory-measured. The study found that the presence of a root system increases slope stability's factor of safety (FOS). The root system of young Maesopsiss eminii produces the largest effect of FOS compared to the root system of shrubs, teak, and old Maesopsis eminii. The slope stability of vegetated slopes is a function of the CR and the effective root zone depth. The highest total CR of vegetation was teak with 0.398 kPa, followed by shrubs, young Maesopsis eminii, and old Maesopsis eminii with 0.202 kPa, 0.191 kPa, and 0.087 kPa, respectively. The effective root zone of teak, young Maesopsis eminii, and shrub were 500, 230, 140, and 66 cm, respectively.
Durability characterization of landslide material from mudrock of Jatiluhur formation
Authors: Misbahudin Misbahudin , Pardede Ismail Suny
Published: July 2023

The infrastructure project has many lies on the mudrock foundation. Some reports in Hambalang, West Java, Indonesia, state the engineering problem related to landslides and foundation failure due to mudrock material's existence. The mudrock originated from Jatiluhur Formation. The problem is also present in slope stability, such as surface erosion and landslide on the many slopes. Landslide material from mudrock material has easily broken into smaller fragments. This research used the wet-dry cycle to evaluate mudrock's durability to weathering on a laboratory scale. The preparation of the test samples in the form of intact rock with a weight of 450-550 grams and then open exposure under sun dry was conducted. The sample was then immersed in water for 24 hours. ISRM physical properties were conducted and correlated with statistical analyses to determine factors affecting the mudrock's durability. From the index of durability, mudrock in Jatiluhur Formation in this research area had various degrees of disintegration. The siltstone samples remained intact until the 15th cycle, unlike shale and claystone samples had expressed low durability and rapid disintegration rate. A series of investigation durability characteristics of mudrock in this study can be applied to other samples and formations that are quantitively and qualitatively.