Publication Search

Vegetables are food commodities widely consumed by the public due to their high nutritional content. Chili (Capsicum annuum L.), green beans (Phaseolus vulgaris L.), and Chinese cabbage (Brassica pekinensia L.) are among the vegetables that can be processed into various delicious dishes or consumed fresh as raw vegetables. To obtain healthy and high-quality vegetable crops, pesticides are commonly used to control pests that may damage the plants. One of the widely used pesticides is chlorpyrifos, which can leave residues that may pose both acute and chronic health risks. Therefore, it is necessary to analyze the levels of chlorpyrifos pesticide residues in vegetables. The residue levels were determined using a UV-Vis spectrophotometer at a wavelength of 230 nm with dichloromethane as the solvent, while qualitative analysis was performed using HPLC by comparing the retention times of standard solutions and vegetable samples. In this study, washing treatments were applied to the vegetables using dichloromethane, distilled water, well water, and tap water (PDAM) to evaluate the effect of washing on pesticide residue levels. The concentrations of pesticide residues in unwashed vegetables were chili (2.6680 ± 0.0214 mg/kg), green beans (2.4658 ± 0.0193 mg/kg), and Chinese cabbage (2.7950 ± 0.0379 mg/kg). The washing process was carried out three times for each solvent. After three washings using dichloromethane and distilled water, pesticide residues were no longer detected, whereas washing with tap water (PDAM) and well water still left residues, although at levels much lower than the Maximum Residue Limit (MRL). The health risk assessment showed that the aHQ and cHQ values were < 1, indicating that consumption within the recommended limits of these samples does not pose health risks, either in the short term or long term. This study provides important information that repeated washing is necessary to effectively reduce pesticide residue levels in vegetables before consumption.  

Coastal areas are highly dynamic and increasingly exposed to physical pressures such as coastal erosion, shoreline change, inundation, and sea-level rise. In Indonesia, most coastal vulnerability studies remain focused on physical mapping and have not been systematically integrated with spatial planning evaluation. This study aims to analyze physical coastal vulnerability using the Coastal Vulnerability Index (CVI) and integrate the results with the Regional Spatial Plan (RTRW) in the coastal areas of Mangarabombang and Laikang Sub-districts, Takalar Regency. A quantitative spatial approach was applied using eight parameters, which were reclassified into vulnerability scores, transformed into CVI values, and classified using quartile methods. The results show that high and very high vulnerability classes dominate the coastal area. Spatial integration reveals that several development zones intersect with high vulnerability levels, indicating potential spatial mismatch. This study confirms that CVI can be operationalized as a spatial evaluation tool to support adaptive and risk-based coastal planning.

Self-Compacting Concrete (SCC) requires a high cement content, which contributes to increased carbon emissions; therefore, this study evaluates the effect of partial cement substitution with fly ash (5%, 10%, and 15%) and the addition of Polyethylene Terephthalate (PET) waste (0.5% and 0.7%) on the mechanical properties of SCC with a target strength of f’c 30 MPa. The research employed laboratory experimental methods, including fresh concrete tests (slump flow, L-box, and V-funnel) and hardened concrete tests (compressive, tensile, and flexural strength) at 7 and 28 days. The results indicate that fly ash substitution enhances compressive strength, with the highest value of 49.59 MPa achieved at 5% fly ash at 28 days, exceeding normal concrete (34.73 MPa). The addition of PET tends to reduce compressive strength due to increased porosity; however, it significantly improves flexural strength, as the combination of 5% fly ash and 0.5% PET achieved 4.7 MPa compared to 2.9 MPa for normal concrete. Overall, the combination of fly ash and PET waste shows potential for application in structural elements requiring high flexural performance.

Sea Surface Temperature (SST) is an important parameter in oceanographic studies because it influences climate dynamics, ocean circulation, and marine ecosystems. Continuous monitoring of SST in open sea areas requires a reliable system capable of operating autonomously. This study develops a solar-powered ocean buoy designed to measure sea surface temperature while simultaneously evaluating the performance of a solar panel as the main energy source. The system uses a DS18B20 sensor to measure SST and an INA219 sensor to monitor the voltage, current, and power of the solar panel, while an ESP32 microcontroller functions as the central data processing unit. The results show that sea surface temperature tends to remain relatively stable with small daily variations, whereas the temperature and performance of the solar panel exhibit larger fluctuations due to direct exposure to solar radiation and changing weather conditions. Solar panel performance also shows significant variations in current and power depending on the intensity of sunlight. To analyze the influence of SST variations on solar panel performance, a statistical analysis using Analysis of Variance (ANOVA) was conducted. The ANOVA results, based on the calculated F-value and the significance value (p-value) at a confidence level of α = 0.05, indicate that SST variations have a significant effect on solar panel performance, demonstrating that the proposed solar-powered buoy system can operate autonomously and has potential for long-term SST monitoring in offshore areas.

This study examines customer churn prediction in subscription-based telecommunications from a digital marketing perspective using machine learning. The analysis utilizes a secondary dataset of 7,043 customer records that simulate behavioral, contractual, and financial attributes commonly found in telecom services. Three classification algorithms Logistic Regression, Random Forest, and Gradient Boosting are applied to model churn behavior. Data preprocessing includes handling missing values, encoding categorical variables, and splitting data into training and testing sets. Model performance is evaluated using accuracy, recall, and ROC-AUC, with emphasis on recall due to its importance in identifying at-risk customers. The results show that Gradient Boosting achieves the highest overall performance with an ROC-AUC of 0.84, while Logistic Regression provides relatively higher recall. Key drivers of churn include short-term contracts, higher monthly charges, and lower service engagement. However, recall remains moderate, indicating limitations in capturing complex behavioral factors. These findings suggest the need to combine predictive models with behavioral insights and highlight the importance of early customer engagement and long-term retention strategies.

Cultural education plays a vital role in fostering children’s creative thinking skills. Batik, as Indonesia’s cultural heritage, embodies artistic values, symbols, and life meanings that can be utilized as a medium of learning. This study aims to describe the implementation of batik-based cultural education in enhancing the creativity of Indonesian children at Sanggar Bimbingan Al Ikhlas Sungai Penchala, Malaysia. The research method employed is qualitative with a case study design. Data were collected through observation, interviews, and documentation. The findings reveal that batik activities improve children’s ability to generate ideas, select colors, and create patterns based on imagination. Moreover, children demonstrate increased confidence in expressing ideas through artwork. Teachers serve as facilitators who guide, motivate, and provide examples during the creative process. The conclusion indicates that batik-based cultural education enhances creativity, self-confidence, and cultural identity awareness among Indonesian children living abroad. This study contributes to the discourse on cultural education by highlighting batik as an effective medium for creative learning and identity development in diaspora contexts.

In the face of Indonesia’s escalating family crises amid rapid digital disruption and post-pandemic social recovery, this study proposes a novel “Dual-Ethos Synergy Model” that integrates the Fruits of the Spirit (Galatians 5:22–23) with the second principle of Pancasila, namely “Just and Civilized Humanity.” The study is grounded in qualitative fieldwork conducted at Gereja Bethel Indonesia Pemulihan Keluarga Allah (GBI PKA). The findings demonstrate that the integration of Christian spiritual values and civic ethics fosters restorative character formation within families and church communities. This synergy produces practical outcomes, including stronger empathy in community service, improved interpersonal relationships, and more constructive conflict resolution practices. Using data gathered through nine in-depth interviews, participant observations, and document analysis, the study addresses existing gaps in urban church discipleship by combining spiritual transformation with social responsibility and civic engagement. The proposed model also offers implications for scalable digital-hybrid ministry programs focused on family restoration and contributes to the development of contextual theological praxis within pluralistic and multicultural societies. Limitations of the study and recommendations for future research are also discussed.

Tiku Beach in Tanjung Mutiara District, Agam Regency, West Sumatra is a 12.77 km coastal area experiencing continuous shoreline changes due to abrasion and accretion. This study aims to identify and map shoreline changes and calculate the area of abrasion and accretion in 2014, 2019, and 2024 using the Modified Normalized Difference Water Index (MNDWI) method based on Landsat 8 OLI satellite imagery. The MNDWI method utilizes the reflectance difference in the Green band (Band 3) and SWIR band (Band 6) to automatically separate the land-water boundary. Shoreline change analysis was performed using Net Shoreline Movement (NSM) and End Point Rate (EPR) methods through ArcGIS 10.8 software with the Digital Shoreline Analysis System (DSAS) extension. Analysis of 336 transects shows that accretion is more dominant than abrasion along Tiku Beach. The largest accretion was recorded at transect 230 with an NSM value of 71.3 m and an EPR rate of 7.12 m/year, while extreme abrasion occurred at transect 249 with an NSM value of -121.67 m and an EPR rate of -12.15 m/year. The evolution of the shoreline shows that in 2014 the coastline was still relatively stable, then in 2019 mild abrasion occurred in the west along with accretion in the east, and by 2024 this pattern became more pronounced. The results of this study are expected to serve as a scientific basis for decision-making in coastal disaster mitigation planning and sustainable coastal management in Agam Regency.

Penelitian ini bertujuan memahami pelaksanaan pembelajaran Pendidikan Pancasila dan Kewarganegaraan (PPKn) sebagai upaya meningkatkan pemahaman nilai-nilai Pancasila pada siswa kelas 5A di SDN 1 Bendogerit Kota Blitar. Penelitian ini dilatarbelakangi pentingnya pendidikan karakter berlandaskan Pancasila dalam membentuk generasi berakhlak, disiplin, dan bertanggung jawab di tengah tantangan globalisasi. Pendekatan yang digunakan adalah kualitatif deskriptif dengan metode wawancara terpusat dan observasi langsung terhadap guru serta proses pembelajaran. Data dianalisis melalui tahapan reduksi, penyajian, dan penarikan kesimpulan secara sistematis. Hasil penelitian menunjukkan guru berperan aktif sebagai teladan dalam membentuk nilai disiplin, tanggung jawab, kerja sama, sopan santun, dan kejujuran siswa. Penguatan nilai Pancasila juga didukung budaya sekolah melalui program pagi rutin dan kegiatan literasi berkelanjutan. Faktor pendukung utama ialah keteladanan guru dan lingkungan yang kondusif, sedangkan tantangan meliputi kebutuhan siswa yang beragam serta keterbatasan sarana digital. This study aims to understand the implementation of Pendidikan Pancasila dan Kewarganegaraan (PPKn) as an effort to enhance students’ understanding of Pancasila values among fifth-grade students at SDN 1 Bendogerit, Blitar City. The research is motivated by the importance of character education based on Pancasila in shaping a generation that is virtuous, disciplined, and responsible amid the challenges of globalization. A descriptive qualitative approach was employed, using focused interviews and direct classroom observations involving teachers and the learning process. Data were analyzed through the stages of data reduction, presentation, and conclusion drawing systematically. The results indicate that teachers play an active role as role models in cultivating students’ values of discipline, responsibility, cooperation, politeness, and honesty. The reinforcement of Pancasila values is also supported by the school culture through regular morning programs and continuous literacy activities. The main supporting factors include teacher exemplarity and a conducive school environment, while challenges involve diverse student needs and limited digital learning facilities. 

This research aims to examine the values contained in Dalihan Na Tolu through the perspective of Christian eschatology and examine its relevance to the mission of the Catholic Church in society. Dalihan Na Tolu as a socio-cultural system of the Batak community contains the values of respect, solidarity, responsibility, and brotherhood which play an important role in building social harmony. This research uses a qualitative method with a library research approach through the collection of data from various books, journals, Church documents, and scientific sources relevant to the research theme. The results of the study show that the values in Dalihan Na Tolu are related to eschatological expectations in the Christian faith, especially in building a life that reflects the love, brotherhood, and fellowship that God wills. In addition, Dalihan Na Tolu also has relevance in the Church's mission as a means of inculturation in the proclamation of the Gospel that is more contextual in the Batak community. Thus, local culture is not seen as an obstacle to faith, but rather as a means that can support the realization of the values of God's Kingdom in common life.

PT Telkom Indonesia (Persero) Tbk (Telkom) is a company that is part of the state-owned enterprises (SOEs) and operates specifically in the field of information technology, communication, and digital telecommunications services in Indonesia. For that reason, financial statement analysis is needed as a source of information about the company's financial condition. Based on the financial reports of PT Telekomunikasi Tbk for the period from 2019 to 2023, there has been a fluctuating increase despite Indonesia being hit by the COVID-19 pandemic in 2020 to 2021. The type of research is quantitative descriptive research with data sourced from the financial reports of PT Telekomunikasi Tbk as of December 31 from 2019 to 2023. The first result, the assessment of the financial performance of PT Telekomunikasi Tbk based on liquidity ratio analysis using the current ratio, shows that the current ratio from 2019 to 2023 has experienced fluctuating conditions but remains in the very good category, above the industry's minimum standard of 200%. Secondly, the results of the solvency ratio analysis using the Debt to Asset ratio (DAR) indicate that the DAR value from 2019 to 2023 is in the very good category, with a value below the industry's maximum standard of 35%. Thirdly, the analysis of profitability ratios using the Return on Equity (ROE) ratio reveals that the ROE value from 2019 to 2023 has experienced fluctuating conditions but remains above the industry standard of 40%.

Abstract. This study aims to determine the effect of Work-Life Imbalance on Customer Service Performance among banking employees who are also university students in Bandung City. Dual roles as employees and students have the potential to create an imbalance between work and academic life, which may affect the quality of customer service. This study employed a quantitative approach with a sample of 25 respondents consisting of active banking employees who are currently pursuing higher education. Data were collected through questionnaires and analyzed using simple linear regression with the assistance of IBM SPSS software. The results indicate that Work-Life Imbalance has a significant effect on Customer Service Performance. The coefficient of determination (R Square) value of 0.837 shows that the Work-Life Imbalance variable explains 83.7% of the variance in Customer Service Performance, while the remaining percentage is influenced by other variables outside the scope of this study. Therefore, banking companies are expected to provide appropriate support for employees who carry dual roles as workers and students.

This study explores the themes of poverty and educational values in the novel Al-Bidayah wa al-Nihayah by Naguib Mahfouz using the sociology of literature approach developed by Alan Swingewood. The novel is selected because it portrays the social reality of Egyptian society in the 1940s, particularly the lower class facing economic hardship, social inequality, and limited social mobility. This research employs a qualitative descriptive method through reading, note-taking, and library research. The data are drawn from narratives, dialogues, and events in the novel that reflect both poverty and educational values. The analysis is conducted by relating the textual content to its social and historical context. The findings indicate that poverty is not merely an economic issue but also a structural condition affecting the psychological, moral, and social aspects of the characters. Furthermore, the novel conveys educational values, including religious, moral, social, and cultural dimensions, which are closely linked to the realities of pre-revolutionary Egyptian society. Overall, Swingewood’s approach highlights the novel as a form of social critique as well as a medium for fostering readers’ social awareness.

Indonesia is a country rich in cultural diversity, one of which is Javanese culture which is full of philosophical values ​​and symbolic meanings in every practice, including in the traditional wedding procession. One of the important rituals in Javanese traditional weddings is the Panggih Manten ritual, which represents the meeting between the bride and groom with various symbols of life, hope and blessings. Along with the development of the times and the flow of modernization, people's understanding of the philosophical meaning of the ritual has shifted. Some people still carry out this tradition as a hereditary custom without understanding the values ​​contained in it, even giving rise to debates regarding its suitability with Islamic teachings. This study aims to analyze the practice of the Panggih Manten ritual in Javanese traditional wedding traditions and review its suitability with the 'Urf argument in Islamic law. The research method used is qualitative with a juridical-normative approach, while the research location was carried out in Pengkol village, Mantingan District. The results of the study show that the Panggih Manten ritual is basically acceptable in Islamic law as long as it does not conflict with the principles of sharia. Based on analysis from the perspective of al-'urf, several aspects of the Panggih Manten ritual, such as muter asem (the act of making offerings), and the belief in disasters, contain elements that are inconsistent with Islamic law and could potentially lead to idolatry, thus being categorized as al-'urf al-fāsid. Therefore, the Panggih Manten tradition can be preserved through reinterpretation of its meaning and the elimination of elements that contradict Islamic teachings, thus aligning it with Islamic principles.

This community service activity is motivated by the suboptimal implementation of sharing values during Ramadan in Taman Sepanjang Village, Sidoarjo, particularly among economically disadvantaged communities who require both material and spiritual support. This study aims to enhance religious awareness, strengthen social solidarity, and empower the community through a takjil-sharing program based on charity. The method used is the Asset Based Community Development (ABCD) approach, consisting of discovery, dream, design, define, and destiny stages. Data collection techniques include participatory observation, interviews, Focus Group Discussions (FGD), and documentation. The results indicate an increase in community understanding of charity and piety, higher participation of residents as volunteers and donors, and stronger social relationships among community members. Furthermore, the program successfully fostered a sustainable culture of sharing and strengthened social cohesion. Despite challenges such as limited funding and coordination, the program is considered effective in providing positive social and spiritual impacts and has the potential for sustainable development.

This study aims to examine Deuteronomy 22:13-30 using a hermeneutic approach and relate it to the current level of awareness of early marriage among Christian congregations. The method used was a qualitative literature study, with the Bible as the primary source, supplemented by various related theological literature. The results indicate that this section of the text contains important theological values, such as holiness, justice, responsibility, and respect for human dignity, especially women, in the context of marriage. Although this text originates from the patriarchal culture of ancient Israel, its principles remain relevant in today's context. Regarding the phenomenon of early marriage, it was found that this practice often occurs without adequate preparation, whether emotional, spiritual, or economic, and thus risks causing various problems in the household. Therefore, the church has a responsibility to raise congregational awareness through faith formation, premarital education, and contextual pastoral care. This study confirms that marriage is a life calling that requires maturity and serious commitment, not simply a solution to social problems.

This study aims to examine the application of an expository approach in the scriptwriting of the documentary film "Jejak Rasa," which highlights Southern Chinese cuisine in Bandung as a representation of cultural acculturation. The background of this research is based on the declining interest of the younger generation in traditional culinary arts due to the influence of globalization and social media trends. The methods used included literature research, field observations, and interviews with relevant sources, such as culinary entrepreneurs and museum officials. The results show that the expository approach is effective in conveying information systematically, factually, and easily understood through the use of voice-over narration as the main direction of the story. Furthermore, the use of an implied first-person perspective creates an emotional connection between the audience and the material presented. This documentary serves not only as an information medium but also as a means of education and preservation of Peranakan Chinese culinary culture. By combining visual elements, narrative, and interviews, this documentary comprehensively presents historical, social, and cultural values. Therefore, this work is expected to raise public awareness of the importance of preserving culinary cultural heritage amidst modern developments.

This study is motivated by the importance of psychological readiness of students in the Guidance and Counseling Study Program at Universitas Jambi in facing various academic and non-academic demands. Problems commonly experienced by students include decreased motivation, feelings of hopelessness, and the risk of dropping out due to the inability to cope with academic pressures. Grit is a combination of perseverance and consistency of interest in achieving long-term goals. Meanwhile, resilience is the ability of individuals to bounce back from difficulties and adapt positively to pressure. This study is limited to two main variables, namely grit and resilience among active students of the Guidance and Counseling Study Program at Universitas Jambi. The indicators of grit include consistency of interest and perseverance of effort. The indicators of resilience include emotional regulation, impulse control, optimism, causal analysis, empathy, self-efficacy, and reaching out. The purpose of this study is to determine the level of grit, the level of resilience, and the relationship between grit and resilience among active students of the Guidance and Counseling Study Program at Universitas Jambi. This study uses a quantitative correlational research design. The sampling technique used is simple random sampling with a total sample of 211 respondents. The instrument used in this study is a Likert scale.The results show that the level of grit is in the high category with a percentage of 76%. The level of resilience is also in the high category with a percentage of 76%. The results of hypothesis testing using Spearman’s Rho correlation technique show a correlation coefficient value of r = 0.439 with a significance value of 0.000 < 0.05. This indicates a significant positive relationship between grit and resilience, which falls into the moderate correlation category

Low-rank coal generally has a high moisture content, which results in a low calorific value and suboptimal quality for utilization as an energy source. One method that can be applied to improve coal quality is the Upgrading Brown Coal (UBC) process, which functions to reduce moisture content and increase fixed carbon value. This study aims to analyze the effect of heating time and the ratio of used oil composition on improving coal quality based on proximate parameters. The research method includes collecting coal samples from four locations in Samarinda and its surrounding areas, namely SMAN 1 Samarinda, Bhineka Street, Palaran Stadium, and Tani Bakti Village. The samples were analyzed using proximate analysis, including inherent moisture (IM), ash content (AC), volatile matter (VM), and fixed carbon (FC), both before and after the UBC process. The upgrading process was carried out with variations in heating time and used oil composition as a coating medium to enhance coal stability and prevent moisture reabsorption. The final results of the upgrading process showed the best values of inherent moisture at 13.64%, ash content at 4.66%, volatile matter at 55.06%, and fixed carbon at 44.94%. The results indicate that the UBC process is capable of reducing inherent moisture and increasing fixed carbon, thereby improving coal quality. Variations in heating time and used oil composition have a significant effect on changes in proximate parameters. Longer heating time and an appropriate ratio of used oil composition result in a more optimal improvement in coal quality.

This study aims to examine and analyze the implementation of digital-based public services through the Digikel website in Biawao Village and Limba U1 Village,Gorontalo City. The main focus of this study includes three aspects:(1) support, (2)capacity, and (3) value. This study employs a qualitative approach with a descriptiveresearch design. Data were collected through observation, interviews, and documentation. The study's findings indicate that the implementation of the Digikel website hasbeen effective across the three aspects. (1) Support: The implementation of Digikelis supported by leadership commitment, active employee involvement, and policysupport from the city government through clear regulations. However, there are stillchallenges in the community's socialization process, which has not been optimal.(2) Capacity: Human resources in Biawao Village and Limba U1 Village are considered to have adequate competence through technical guidance. Nevertheless,there are still infrastructure-related obstacles, including unstable internetconnectivity and limited computer equipment. The absence of a dedicated budgetat the village level has also been a constraint in system development. (3) Value: The implementation of Digikel has had a positive impact, particularly in improving efficiency in terms of time, cost, and labor, as well as in accelerating, simplifying, and enhancing the transparency of public services. However use of this system has not yet been fully optimized due to low levers of diritalitgacy among somemembers of the community.