Indonesia University of Education

For generations, the Sundanese cultural tradition of ‘Dogdog Lojor’ has been preserved within the Kasepuhan Adat Sinar Resmi community. Since the 1980s, women’s participation in the traditional performance art has notably increased. This ethnographic study examines women’s evolving roles within ‘Dogdog Lojor’ through participant observation, in-depth interviews with three female performers and two traditional community leaders, and document analysis. Our findings reveal that women’s growing involvement in ‘Dogdog Lojor’ represents a significant shift in traditional Sundanese gender dynamics. Women now serve as singers, instrumentalists, and dancers, while also playing vital roles in preparations for the sacred ritual, ‘Seren Taun’. Their contributions enhance the artistic quality of performances while reflecting broader societal transformations. Through their participation in ancestral traditions, women demonstrate community loyalty and affirm their cultural identity. This development corresponds with Indonesia’s social progression, particularly the women’s emancipation movement, and illustrates evolving gender roles within both Kasepuhan Adat Sinar Resmi and wider Sundanese culture. Women’s engagement in ‘Dogdog Lojor’ not only enriches the art form but also ensures the transmission of Sundanese cultural heritage to future generations.

The current study examines and evaluates the direct influence of perfectionism, self-efficacy, academic stress, and workload on students’ learning outcomes. The study applied a quantitative survey approach. We implemented a survey as the data collection method. A sample size of 218 students was determined using *G-power to determine the sample size. The data collection technique involved distributing and collecting questionnaires through Google Forms. Quantitative data analysis was performed using the partial least squares-structural equation model method. The results indicate that a relationship between perfectionism and academic fatigue emerged, as well as perfectionism and academic achievement. Self-efficacy is a robust positive determinant of academic fatigue, while academic stress is an affecting factor of academic fatigue. The relationship between workload and academic fatigue appeared significant. Workload and academic achievement are also correlated. Finally, academic fatigue significantly affects academic achievement. Self-efficacy and coping strategies are two main factors influencing learning outcomes.

This study aims to analyze the patterns of social engineering competency selection among prospective teacher students, as well as the factors influencing these choices, including educational background, access to technology, and gender differences. A quantitative approach was employed, utilizing descriptive statistical analysis, chi-square tests, Spearman correlation, and logistic regression. Data were collected through a survey of 376 prospective teacher students at Universitas Pendidikan Indonesia and analyzed to identify gaps between theoretical and practical competencies, along with selection patterns based on demographic factors. The results indicate that prospective teacher students tend to favor theory-based competencies over practical skills. Theoretical understanding emerged as the most dominant competency, whereas practice-oriented competencies were selected less frequently. These findings suggest that the higher education system continues to place greater emphasis on theoretical knowledge rather than its practical application in the context of social engineering. To better prepare prospective teacher students for real-world social challenges, higher education institutions should strive for a more balanced integration of theory and practice. The implementation of project-based learning, service-learning, and interdisciplinary approaches is recommended to cultivate more applicable and transformative social engineering competencies.

Coastal communities in the north of Java Island are one of the areas most vulnerable to climate change. They cannot work because of tidal flooding. Children's education is disrupted because they cannot go to school. Damaged roads and building facilities cause a lack of public access in various ways. The vulnerability experienced by these communities causes social problems in the form of poverty in this area. Taking rapid action to adapt to these conditions is one of the global goals outlined in the Sustainable Development Agenda (SDGs). This article aims to describe the form of integrated resilience in the coastal communities north of Java Island (Indonesia) in adapting to climate change. The research method used is qualitative because it emphasizes the ideas and experiences of the community regarding adaptation to climate change. Data were obtained through interviews, observations, and focus group discussions (FGD). The locations of this research are Tangerang, DKI Jakarta, Cirebon, Demak, and Pasuruan. These locations represent all provinces in Java Island. The results of the study describe various forms of adaptation in multiple aspects of life, including Economic Vulnerability, Social Vulnerability, Educational Vulnerability, and Environmental Vulnerability. This condition requires an integrated resilience model in coastal communities as an adaptation strategy. In the long term, planting mangroves is very effective in dealing with abrasion. Some other adaptations are raising houses and building floating houses.

Energy research is evolving to address human needs, environmental protection, and corporate responsibility. Nuclear power plants (NPPs) present a viable energy solution, but their siting remains a significant challenge. This study aims to investigate trends and insights in NPP siting using multi-criteria approach. Scopus served as the primary database, enabling the collection of research data from 1968 to 2024, encompassing 464 articles. Data analysis and visualization were performed using VOSViewer, spreadsheet applications, and the RStudio package. The findings reveal significant growth in publications and citations, with Nuclear Engineering and Design emerging as the leading journal, contributing 15 publications. The United States leads in research output with 94 publications, while Indonesia ranks ninth with 13 publications. Keyword network analysis identified four primary clusters: nuclear reactor safety and design, NPP site selection and environmental impacts, seismic risk in nuclear site evaluation, and radioactive waste management. Emerging research trends include the integration of geographic information systems (GIS) and multi-criteria decision-making (MCDM), particularly after 2016. Thematic mapping reveals NPP site selection and accident prevention as central themes, with GIS and MCDM, particularly the analytic hierarchy process (AHP), standing out as key areas for future research. This analysis highlights opportunities for international collaboration and identifies methodological gaps in NPP site selection.

One of the educational programs implemented in Indonesia is the independent learning program, or it is called as Merdeka Belajar program. The objective is to provide flexible opportunities for students to study according to their interests and abilities. Although the program has been implemented, there is no effective evaluation model to assess its process and result. This research aims to examine the structural effects of different evaluation types in measuring the effectiveness of the Merdeka Belajar program. A mixed-method approach was used with a sequential explanatory research design. The sample was taken from 167 students in higher education through cluster random sampling. Questionnaires, interviews, and documentation were used as data collection techniques. Descriptive statistics, Structural Equation Modeling, and qualitative data analysis were used to process the data. The results show that there are structural effects of the evaluation types on students’ competence. Context and input evaluations influence process evaluations, while process evaluations impact output evaluations and student achievement, with non-academic achievements serving as the more dominant indicator. The research findings contribute to the development of Stufflebeam’s CIPP evaluation model and, in practice, can be utilized to enhance the quality of Merdeka Belajar program management.

Islamic historical literacy is essential for Islamic Religious Education (PAI) teachers, as it involves understanding the context of Islamic teachings. For prospective PAI teachers, this literacy is fostered through courses in Islamic civilization history, with development influenced by their academic self-concept. This research’s first-year study aimed to explore the academic self-concept and Islamic historical literacy levels of prospective PAI teachers, without assessing the relationship between these two variables. A quantitative survey approach was used, involving students from the 2021 to 2023 cohorts at a state university in Bandung who had enrolled in the History of Islamic Civilization course. Data were collected through a Likert-scale questionnaire and analyzed descriptively. Results showed that nearly all respondents possessed a good academic self-concept, although a small number required improvement, particularly in the cognitive aspect. Similarly, 91% of respondents demonstrated a good level of Islamic historical literacy, with 31% achieving very high literacy. These findings suggest that Islamic civilization history courses positively impact both academic self-concept and Islamic historical literacy. In the second year, experimental research will be conducted to assess the effectiveness of collaborative learning within this course in further enhancing these attributes among prospective PAI teachers.

This research examines natural dyes' chemical and physical characteristics for potential use in dye-sensitized solar cells (DSSCs). Chlorophyll pigments were extracted from two macroalgae species, Caulerpa racemosa and Gymnogongrus flabelliformis, and analyzed using absorbance spectroscopy, band gap energy calculations, and dye-sensitized solar cell performance evaluation. Fourier Transform Infrared (FTIR) characterisation was used to identify the pigments contained in the dye. The absorbance spectra of chlorophyll pigments extracted from both macroalgae species showed broad peaks at 400–800 nm wavelengths, with Gymnogongrus flabelliformis showing the highest absorbance peak at 403 nm. The redox potential analysis for both macroalgae species showed energy gaps (HOMO/LUMO) of 1.3 eV, 1.4 eV, 2.3 eV, and 2.4 eV, respectively, indicating that these natural dyes are suitable for use in DSSC applications. DSSC devices were fabricated using components such as liquid electrolyte, mesoporous titanium dioxide (TiO₂) photoelectrode, reduced graphene oxide (rGO) as counter electrode, and ITO glass as conductive substrate. Meanwhile, to evaluate how well the photovoltaic system worked, we looked at short-circuit current density (Jsc), open circuit voltage (Voc), fill factor (FF), and overall photoelectric conversion efficiency (η). The results showed that the highest performance for Gymnogongrus flabelliformis was Jsc 0.041 mA/cm², Voc 0.28 V, FF 0.239, and η 0.020%, while the highest performance of Caulerpa racemosa was Jsc 0.023 mA/cm², Voc 0.46 V, FF 0.244, and η 0.019%. These findings indicate the potential for using and developing natural dyes derived from these two macroalgae species in DSSC technology. This research offers insight into the feasibility of marine-derived pigments as a sustainable and environmentally friendly alternative for photovoltaic applications.

This study aims to explore how e-rebuttal texts on Newton’s laws can reconstruct students’ mental models by altering existing misconceptions. A mixed methods approach (quantitative and qualitative) was used in the research. Participants were 31 students (15 boys and 16 girls, aged 15–16 years) in the 10th grade of one public high school in Sukabumi, West Java, Indonesia. The instrument used Multi-representation on Tier Instrument of Newton’s laws (MOTION), consists of 36 subject matter questions about Newton’s First Law, Newton’s Second Law, Newton’s Third Law, and the type of forces. The data were analyzed using the categories of conception, mental model, and correction of a mental model. The result shows positive changes in each mental model from the pre-test to the post-test. The rate of correction in students’ mental models from pre-test to post-test occurred primarily in the Acceptable Correction (ACo) category. It was concluded that e-rebuttal texts can be used to reconstruct students’ mental models in conceptual change to become Scientific (SC) models. Other researchers may use learning models and strategies to involve students in groups to facilitate the discussion process.

Inositol hexakisphosphate (InsP6) requires relatively high concentrations to induce apoptosis of cancer cells, which can possibly cause apoptosis of normal cells. Anticancer ability of InsP6 could be preserved by combining with histone, so InsP6 can be used at low concentrations. The effect of InsP6 and histone combination has not been investigated on nasopharyngeal cancer cells. The current study elucidated the effect of InsP6 and its combination with histone on the apoptosis of HONE-1 cells. The most effective concentration and the cellular mechanisms by which this combination exerts its anticancer effects were also investigated. HONE-1 and NIH3T3 cells (as normal control cells) were treated with InsP6 and/or histone in different concentrations. Apoptosis percentages of the treated cells were measured with sub-G1 assay. Nuclear fragmentation and mitochondrial membrane potential (∆Ψm) reduction in the treated HONE-1 cells were confirmed with 4',6-diamidino-2-phenylindole (DAPI) staining and ∆Ψm assay, respectively. The combination of 10 μM InsP6 and 10 μg/mL histone had the optimal ability to induce the apoptosis of HONE-1 cells. This combination did not induce apoptosis of NIH3T3 cells. The apoptosis-inducing ability of this combination was higher than that of 10 μM InsP6 merely. The ability of InsP6 to induce apoptosis of HONE-1 cells could be enhanced by histone application. Combination of 10 μM InsP6 and 10 μg/mL histone might be the optimal concentrations for inducing apoptosis in HONE-1 cells.

Background Indonesia has a high production of cassava, and cassava waste has significant potential as an alternative feed. However, the high levels of hydrogen cyanide (HCN) and crude fiber in cassava waste pose safety risks for its use as animal feed. Aim This study aimed to identify the morphology and molecular characteristics of cyanolytic and cellulolytic bacteria from cassava waste and evaluate their potential in reducing cyanide levels and improving its nutritional value to ensure feed safety. Methods The first step of this research involved the isolation and screening of cyanolytic and cellulolytic bacteria from cassava waste using DNA sequence homology analysis and constructing a phylogenetic tree. The second step evaluated the potential of the identified bacteria to improve cassava waste as a safe feed. The bacteria were used as inoculants in cassava waste fermentation, employing a factorial, completely randomized design with two factors: types of inoculants and fermentation duration. Data were analyzed using analysis of variance followed by Duncan’s Multiple Range Test. Results This study identified two novel bacterial strains, namely Proteus vulgaris HT3, and Citrobacter freundii HT1. The application of these bacteria as inoculants in cassava waste fermentation at different durations significantly reduced cyanide content, crude fiber, and pH, while significantly increasing protein content. This improved the quality of cassava feed as a safe feed. Conclusion Cassava waste fermented for 15 days with C. freundii HT1 produced the best feed quality and safety, with the lowest HCN and crude fiber and high crude protein content.

The hippocampus is essential for learning and memory, with the p53 protein serving as a critical regulator of these cognitive processes. While p53 is predominantly recognized for its role in apoptosis, it also plays a vital role in modulating synaptic plasticity and preserving hippocampal health. This review explores the influence of p53 on synaptic function and long-term potentiation (LTP) in CA1 neurons, emphasizing its neuroprotective properties within the central nervous system. A comprehensive literature search was conducted across databases such as PubMed and ScienceDirect, employing systematic inclusion and exclusion criteria. We limited our analysis to experimental studies published in English between 2001 and 2022, specifically including articles that were not systematic reviews or literature articles, and excluding animal studies, simplified abstracts, and book chapters. A total of six articles were deliberately chosen for review, examining varied patterns of p53 and synaptic function in diverse contextual settings. The findings reveal that p53 gene regulation is integral to neuronal transcription and is influenced by synaptic activity, with LTP induction correlating with increased p53 transcription levels. Furthermore, miR-34c enhances synaptic function by promoting the expression of synaptotagmin 1. Under apoptotic conditions, p53 is localized at synaptic terminals, contributing to mitochondrial dysfunction and oxidative stress, which leads to synaptic mitochondrial depolarization. The activation of p53 in the CA1 region highlights its dual role in facilitating apoptosis while also providing neuroprotection. These findings suggest that targeting p53 pathways may offer novel therapeutic strategies for enhancing synaptic function and protecting against neurodegenerative diseases, emphasizing the need for a balanced approach to modulate its activity for optimal neuronal health.

Background and study aim. Agility, speed, and leg muscle power are considered highly important for every football player. The purpose of this study was to determine the effectiveness of speed, agility, and quickness (SAQ) training in increasing the speed, agility, and leg power of football athletes. Material and methods. This study is experimental. SAQ training was conducted for six weeks with a frequency of three times per week. The population consisted of 31 football players from the Sorong Football Club, aged 13–18 years, who were randomly selected. The instruments used were the agility test (Illinois Agility Test), the vertical jump test, and the speed test (30-meter sprint). The statistical method applied was the t-test, specifically the paired sample test. Results. The results showed that SAQ training is effective in increasing speed (p-value 0.018 < 0.05), agility (p-value 0.000 < 0.05), and leg power (p-value 0.000 < 0.05) in football athletes. The improvements after SAQ training were 0.10 seconds in speed, 0.02 seconds in agility, and 1.00 cm in leg power. Conclusions. These results suggest that SAQ training is effective in improving football players' speed, agility, and leg power performance, but further research is needed to determine the ideal training method for enhancing these attributes. Researchers who intend to continue or replicate this study are advised to implement stricter control measures throughout the experiment to mitigate threats to external and internal validity.

The photocatalytic properties of semiconductors play a crucial role in eliminating water pollutants helping to mitigate significant health risks to humans and ecosystems. This study aims to synthesize rGO/ZnO/NiO nanohybrids (RZN) using the hydrothermal method which demonstrates promising photocatalytic properties for environmental remediation. FESEM and TEM reveal that RZN agglomerated and that rGO exhibited a stacked layer structure. ZnO and NiO were evenly deposited onto the surface of rGO during the hydrothermal synthesis as confirmed by FESEM imaging. The size of RZN was determined to be 24.4 nm from XRD and the band gap was found to be 3.12 eV from UV-DRS analysis. RZN demonstrated superior efficiency in degrading methylene blue (MB) dye compared to pure and binary materials. RZN achieved a remarkable MB degradation rate of 90.24% within 90 min under UV light at pH 11. The degradation of RZN follows pseudo first-order kinetics with a rate constant of 0.0258 min⁻¹. The photocatalytic degradation mechanism was found to involve hydroxyl radicals (•OH) and superoxide anions $({O}_{2}^{\bullet -}$) as the primary active species. Furthermore, the RZN nanohybrids exhibited excellent reusability maintaining high degradation efficiency over five consecutive cycles demonstrating their stability and long term usability. These findings suggest that RZN is a highly efficient sustainable solution for environmental remediation particularly in the degradation of organic dye pollutants making them a promising candidate for real world applications in water treatment.

The tourism sector in West Bandung Regency, Indonesia has enormous potential, as evidenced by the region’s impressive array of over 40 captivating tourist destinations. This fact highlights its significant influence, not only within its borders but also in nearby cities like Bandung and Jakarta. Remarkably, West Bandung Regency hosts several recreation parks close to local communities, defying the conventional wisdom that places such sites away from residential areas. Thus, this paper aims to illuminate the tangible impact of these recreation parks on the lives of nearby residents. The case studies, Farm House and The Great Asia Africa in Lembang District are the district’s most renowned thematic parks. This research employed a descriptive qualitative methodology, gathering data through literature reviews and collecting information from residents surrounding the two theme parks. Through spatial analysis and streetscape scrutiny, this paper examined the physical transformations induced by these thematic parks in their immediate surroundings. The research underscores their profound environmental and socio-economic impacts, particularly in physical transformation. Previous studies on theme parks focused on management rather than their effects on the surrounding communities. This paper tries to urge local authorities and related businesses to consider the symbiotic relationship between theme parks and their residents. Embracing this perspective can lead to more harmonious coexistence and mutual benefits for all stakeholders.

Moral Foundations Theory (MFT) has become one of the most recognized theories in moral psychology. Atari et al. (Journal of Personality and Social Psychology, 125(5), 1157–1188, 2023) answer the call for a cross-culturally valid instrument to measure moral foundations with the Moral Foundations Questionnaire-2 (MFQ-2). We evaluate the psychometric quality of the MFQ-2 in Ghana, a non-WEIRD country (N = 1,049). Following the PROMIS plan (Reeve et al., Medical Care, 45(5), S22–S31, 2007), we assess traditional descriptive statistics in item and scale analysis, Item Response Theory assumptions (IRT), Graded Response Models (GRM) item fit, and Differential Item Functioning (DIF) due to age, gender, religion, and religiosity. While problems occur with traditional descriptive statistical analyses, IRT assumptions are mostly given, GRM item fits are seen as slightly problematic, and items generally display no DIF. The purity scale harbors numerous challenges in terms of validity. To ensure high-quality results across cultures, the instrument needs to be revised or adapted to specific cultures.

Sundanese Classical Dance is a dance developed in a noble environment in West Java whose people speak Sundanese and have a historical background and cultural values that are mutually agreed upon. This study aims to discuss the aesthetic values, ethics and manners, and cultural values in Sundanese Classical Dance, specifically Keurseus Dance danced by male dancers and Sulintang Dance danced by female dancers. This research uses a qualitative approach with ethnographic methods to reveal these values represented by dance movements, make-up and dance costumes. The data were collected through observation, interviews, documentation studies, and literature reviews. The results showed that the aesthetic, ethical and values manners in Sundanese Classical Dance show social behavior, social system, and nobility identity. Social behavior is expressed by subtlety, politeness, neatness, and order reflected in the beauty of dance movements, while the social system is patriarchal. Sundanese nobility identity is reflected in makeup and dance attire. The values manners are reflected in the overall expression of the dance and daylife such as discipline, patience, and responsibility. The results of this study have implications for the relay of aesthetic and cultural values of the next generation as heirs of Sundanese Classical Dance.