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This article examines umpasa as the determinant of the validity of the Mangalahat Horbo ritual and as a vehicle for transmitting the cultural values of the Batak Toba people from an anthropolinguistic perspective. Mangalahat Horbo is a buffalo sacrifice ritual that functions simultaneously as a cosmological, political, and linguistic event. This study employs a descriptive qualitative approach using three theoretical frameworks: Dell Hymes' (1974) SPEAKING model to analyze the ritual as a speech event, Roland Barthes' (1968) semiotics to dissect the denotative and connotative meanings of umpasa, and Kluckhohn's (1953) theory of cultural values and Sibarani's (2014) local wisdom theory to identify embedded cultural values. The findings reveal that umpasa operates on three simultaneous layers of meaning: pragmatic-performative, social-hierarchical, and cosmological-ecological. Umpasa is not merely an aesthetic ornament but a constitutive element of the ritual that shapes the social and cosmological reality of the Bius community. Eight cultural values are identified: communicative courtesy, adat knowledge transmission, self-restraint, collective responsibility, cultural preservation, cosmological reciprocity, distributive justice, and ecological harmony. This study affirms the urgency of anthropolinguistic documentation of Mangalahat Horbo before the Parhata masters of umpasa diminish further.

Public facility cleanliness is a reflection of cultural values and collective social responsibility. Bus stops, as daily transit points for thousands of commuters, often face declining cleanliness due to limited user participation and management. This community service program was conducted on April 22, 2026, at RSAL Bus Stop, Surabaya, Indonesia, with one researcher as the sole implementer. The objectives were to improve physical cleanliness, provide environmental education, and enhance aesthetics through greening. The method consisted of three activities: installing cleanliness reminder posters, cleaning the bus stop area, and adding ornamental plants in flower pots. Evaluation employed qualitative descriptive techniques, including observation, photographic documentation, and informal interviews. Findings revealed that the bus stop floor, initially littered with plastic waste, cigarette butts, and dry leaves, became clean after sweeping. Posters were successfully placed in visible positions, and three flower pots containing Sansevieria trifasciata and Epipremnum aureum created a fresher atmosphere. Users responded positively, noting improved comfort and cleanliness. The synthesis indicates that simple interventions by a single individual can generate meaningful improvements when combining physical cleaning, visual education, and greening. This initiative demonstrates that small-scale university-led social responsibility programs can serve as replicable models for sustainable public facility management.

Chrysanthemum is an ornamental plant widely cultivated in Indonesia, with various varieties that have unique and attractive characteristics. Each variety responds differently to changes in light intensity. Providing shade can help regulate the light intensity received by chrysanthemum seedlings during the acclimatization stage. This study aimed to determine the best shade percentage for the acclimatization growth of three chrysanthemum varieties. The research was conducted in the screenhouse of the Faculty of Agriculture, Tanjungpura University, for three months, from October to December 2024. The experiment used a Split Plot Design (Split Plot) with a Randomized Block Design (RBD), consisting of two factors: shade percentage and variety. There were three levels of shade and three chrysanthemum varieties, resulting in nine treatment combinations. Each treatment was repeated three times, with each replication consisting of three sample plants, resulting in 81 experimental units. The shade percentages used were 25% (n1), 50% (n2), and 75% (n3), and the varieties tested were Xanne (v1), Suciyono (v2), and Pinka Pinky (v3). Observed variables included plant survival rate, plant height, stem diameter, internode length, number of internodes, number of flower primordia, leaf color changes, along with supporting data such as temperature, humidity, and light intensity. The results showed that 50% shade was effective in promoting plant height and the number of flower primordia in the three varieties: Xanne, Suciyono, and Pinka Pinky. The Suciyono variety exhibited good vegetative and generative growth under all shade percentages.

This research aims to recontextualize the local wisdom embedded in the visual culture of the Muara Jambi Temple through the development of folklore-inspired batik motif designs. As a traditional Indonesian textile craft, batik serves not only functional purposes but alsp embodies profound cultural values and indigenous knowledge systems. Batik as a medium of cultural expression that invites multidimensional interpretaion within both practical and theoretical academic discourses. Its visual strength lies in the richness of colors, ornaments, and symbolic elements, which generate diverse interpretative meanings. These interpretations subsequently shape value systems that function as guiding principles in the everyday lives of Indonesian communities. The research used an experimental design method integrated with computer vision techniques to generate distinctive folklore batik motifs rooted in the cultural heritage of Muara Jambi, Sumatra. The research results are the creation of a Muara Jambi folklore batik motif that represents cultural expression, resilience, and continuity through the preservation of traditional patterns and environmentally conscious practices within the Jambi community. The transformation of motifs derived from artifacts from the Muara Jambi temple complex, serves as a primary source of inspiration for contemporary folklore batik design. The application of computer vision in the batik design process constitutes a form of sustainable digital innovation, facilitating the preservation, reinterpretation, and adaptive transformation of traditional visual heritage.

The lompong flower is an ornamental plant that requires stable soil moisture conditions and a stable environment so that it can grow optimally. Moisture level mismatches often hinder growth and even have the potential to cause plant damage. This research aims to design and implement an Internet of Things (IoT)-based humidity monitoring system that is able to monitor the humidity condition of the pond flower in real-time. The system developed uses soil moisture sensors as input devices, microcontrollers as data processors, and internet networks as a medium for sending data to the monitoring platform. The data obtained is displayed directly so that users can know the actual humidity conditions and take appropriate maintenance actions. The results show that the system is able to display moisture data with a good level of accuracy, as well as provide relevant information for users in plant care decision-making. The implementation of this system has proven to be effective in supporting the maintenance of lompong flowers, especially in maintaining soil moisture stability. This research is expected to be a reference for the development of IoT-based ornamental plant monitoring technology, as well as contribute to improving the quality of plant care in a more efficient and measurable manner.

Technological developments and modern lifestyles have indirectly changed the way elementary school children interact with their surroundings. Most of them spend all day playing with gadgets. The lack of physical interaction with the natural environment is not just a matter of preference, but can also affect many important aspects of child development. Therefore, an innovative approach is needed to bridge this gap, namely, through aquascape training. Aquascape is the art of arranging and combining aquatic plants, water, sand, stones, driftwood, and other elements in a playful manner through a combination of underwater aesthetic styles in an aquarium. The purpose of this training is for children to be invited to directly recognize and understand aquatic ecosystems, but also to actively practice their responsibility, creativity, and awareness. Thus, it is hoped that aquascape training can divert a small portion of screen time to more meaningful real experiences, shaping a generation that is more connected to nature and the surrounding environment. The community service program was conducted for 110 fifth-grade students at Kebalenan State Elementary School in Banyuwangi Regency on January 14, 2025. The activity was carried out in person. Session 1 focused on Environmental Education and Ornamental Fish, while Session 2 involved training in creating a simple aquascape. During the training, the students showed high motivation, enthusiasm, and interest in participating in the activity.