This study aims to apply integral calculus methods to calculate the volume and arc length of an ice cream cone design shaped like a flower petal. The cone design is modeled using a quadratic function derived from three reference points on the petal curve. Using the solid of revolution method around the y-axis, the calculated petal volume is 150.8 cm³, and the arc length is 7.14 cm. The results demonstrate that calculus-based modeling supports efficient material usage while enhancing aesthetic and functional aspects of packaging. This research highlights the connection between mathematical concepts and practical product design in the food industry

This research aims to examine the relationship between emotional maturity and adjustment in migrant students at Universitas Negeri Padang. The subjects in this research were migrant students at Universitas Negeri Padang. The number of subjects taken in this research was 109 students. The method used in this research is nonprobability sampling, namely purposive sampling. The measuring instruments used in this research are the emotional maturity scale and the self-adjustment scale. The data obtained in this research were analyzed using the Pearson correlation technique. The results of this study show that there is no significant relationship between emotional maturity and self-adjustment, as shown by the value of r = 0.117 with p = 0.227 (p> 0.05). This shows that there is no relationship between emotional maturity and self-adjustment in Padang State University Migrant Students.
 
 

This study discusses the conflict between Government Regulation Number 28 of 2024 concerning the provision of contraceptives for students with the principles contained in the Child Marriage Law and the National Education System in Indonesia. Although this policy aims to prevent early pregnancy and transmission of sexually transmitted diseases, the provision of contraceptives for students raises concerns because it is considered to legitimize sexual activity among adolescents. This is compared to child protection efforts as stated in the Marriage Law which stipulates the minimum age of marriage and moral values ??in education. This study uses a normative legal approach to analyze the implications of the policy on children's rights, the education system, and social and cultural values. The results of the study indicate that this policy has the potential to violate the goals of national education and child protection. Therefore, a more balanced policy revision is needed, by integrating comprehensive sex education based on moral values, in order to protect children's rights while providing appropriate education for adolescents.

This study examines the comparative role of local governments in achieving Sustainable Development Goal 14 (SDG 14) concerning Marine Geoparks in the Riau Islands and West Papua. The primary focus is on analyzing regulatory hierarchy gaps to demonstrate the importance of local government involvement in achieving sustainable development goals and the need for regulatory improvements to support effective marine resource management. This research employs a normative analysis method and a statutory approach to compare regulations and local government roles in the Riau Islands and West Papua. The study utilizes secondary data obtained through library research and processed using descriptive analysis techniques. The data consists of secondary sources, including primary legal sources and relevant literature. The findings indicate that sustainable development implementation under SDG 14 in the Raja Ampat Marine Geopark is more effective and well-organized, supported by Raja Ampat Regional Regulation No. 27 of 2008 and No. 8 of 2016. In contrast, the Natuna Marine Geopark faces several challenges, such as the lack of specific Geopark regulations, limited accessibility, and minimal utilization of digital technology for promotion and monitoring.
Penelitian ini membahas perbandingan peran pemerintah daerah dalam pembangunan berkelanjutan tujuan 14 Sustainable Development Goals (SDGs) atau yang disebut pembangunan berkelanjutan terkait Marine Geopark di Kepulauan Riau dan Papua Barat. Fokus utama penelitian ini adalah menganalisis kekosongan hierarki peraturan perundang-undangan dengan tujuan untuk menunjukkan bahwa keterlibatan pemerintah daerah dapat digunakan untuk mencapai tujuan pembangunan berkelanjutan dan perlunya perbaikan dalam hierarki peraturan untuk mendukung pengelolaan sumber daya laut secara efektif. Penelitian ini menggunakan metode penelitian yaitu analisis normatif dan jenis pendekatan penelitian peraturan perundang-undangan (Statue Approach) untuk mengkaji pemahaman melalui perbandingan regulasi dan peran pemerintah daerah di Kepulauan Riau dan Papua Barat. Jenis data yang dikaji adalah data sekunder yang diperoleh dengan teknik studi kepustakaan (library research) yang diolah menggunakan teknik deskriptif analisis. Data yang digunakan terdiri dari data sekunder, mencakup sumber hukum primer, serta literatur yang relevan. Hasil penelitian menunjukkan bahwa implementasi pengelolaan pembangunan berkelanjutan dengan tujuan 14 SDGs yang diterapkan terhadap Marine Geopark Raja Ampat jauh lebih efektif dan teroganisir dengan didukung oleh Peraturan Daerah Kabupaten Raja Ampat Nomor 27 Tahun 2008 dan Perda Nomor 8 Tahun 2016. Sebaliknya, Marine Geopark Natuna masih menghadapi beberapa tantangan, seperti keterbatasan regulasi yang spesifik untuk Geopark, aksesibilitas yang terbatas, serta minimnya pemanfaatan teknologi digital untuk promosi dan monitoring kawasan.

Every student must have personal problems both from behavior to emotional, especially in the context of education, so that these problems can interfere with the process of self-development. This can be overcome with the help of group counseling. The purpose of this study is to determine the effectiveness of group counseling in finding solutions to students’ personal problems. The method used is the literature study method, which obtains research from various reading sources such as journals. This research produces evidence from various literatures that group counseling is very effective in finding solutions to students’ personal problems both from behavior to emotional problems. Therefore, group counseling services are highly recommended for guidance and counseling in schools to be carried out regularly and periodically to help students overcome their problems effectively.

The community service program entitled Bunga Rampai Desain represents the contribution of the Visual Communication Design Study Program at STEKOM University in promoting public literacy on art and design as educational, social, and cultural mediums. Held at Tan Art Space Gallery in Semarang, the program integrated an exhibition of visual works such as posters, installations, photography, and graphic design with interactive workshops and open discussions. The implementation involved students, academics, artists, and local communities to create a participatory and collaborative ecosystem. Evaluation results indicate a significant increase in public appreciation of visual arts, as well as the emergence of interdisciplinary engagement. Students gained direct experience in curating, event management, and public visual communication. These findings affirm that visual-based approaches can serve as effective strategies in community engagement programs, particularly in fostering critical awareness and sustaining creative dialogue. The program provides a model for future replication and development of similar initiatives

This research aims to explore the effectiveness of a joint healthy exercise habit program in increasing children's awareness of the importance of exercise for health. With the increasing prevalence of health problems related to a sedentary lifestyle among children, fun and educational interventions have become increasingly important. The program involves a series of exercise sessions designed to encourage active participation in children, accompanied by education about the benefits of exercise for physical and mental health. This study aims to evaluate the influence of the habit of healthy exercise together on children's awareness at SDN Tumaritis regarding the importance of exercise for health. The method used in this research is a direct approach in the field, where exercise sessions are held every Saturday for eight weeks. During the activities, observations were made to assess the children's level of participation and changes in their behavior regarding physical activity. The results of the study showed a significant increase in children's awareness about the benefits of sport after participating in the gymnastics program. In addition, there was a clear improvement in children's physical fitness as measured through physical fitness tests. These findings indicate that healthy exercise habits can be an effective strategy in increasing children's awareness and interest in physical activity.

Secure image transmission is increasingly vital in the digital era, especially against emerging quantum threats. This study proposes a hybrid image encryption scheme that integrates Quantum Key Distribution (QKD) using the BB84 protocol with a combination of 7-dimensional (7D) and 2-dimensional (2D) hyperchaotic systems to achieve robust security. The BB84 protocol facilitates quantum-assisted key exchange, ensuring resistance to eavesdropping, while the hyperchaotic systems provide high entropy and complex randomness, utilized in a layered permutation-substitution encryption framework. The initial seeds for chaotic sequences are derived using a SHA-512 hash of both the input image and quantum-generated key, ensuring uniqueness and sensitivity. Experimental validation was conducted using several benchmark images. The information entropy values of the ciphered images reached up to 7.9993, indicating excellent randomness. Differential analysis showed high resistance to small perturbations, with NPCR exceeding 99.61% and UACI averaging around 33.47%, which meet standard security thresholds. Histogram and chi-square tests confirmed the uniform pixel distribution, with chi-square values below 280, satisfying the randomness criterion for 8-bit images. Furthermore, correlation coefficients of adjacent pixels dropped to near zero, evidencing effective decorrelation. The encryption scheme also demonstrated robustness to data loss, as shown by the successful decryption of partially corrupted cipher images. Robustness testing under partial data loss (200×200-pixel blocks) also demonstrated visual recoverability and algorithm resilience. Overall, the proposed BB84-assisted dual-hyperchaotic encryption scheme offers a secure and computationally effective solution for protecting sensitive image data, making it suitable for post-quantum secure communications.

The enzymes laccase (Lac), manganese peroxidase (MnP), and lignin peroxidase (LiP) are ligninolytic enzyme groups that have a crucial role in degrading lignin compounds. These complex components are abundant in plant biomass. This research aims to isolate and characterize microorganisms producing the enzymes Lac, MnP, and LiP from leaf litter, rhizosphere soil, and sediment in the Gunung Lumut Protected Forest (GLPF) and Sungai Wain Protected Forest (SWPF), East Kalimantan. The bacterial and fungal isolates obtained were cultured on NA and PDA media enriched with 0.05% guaiacol as a substrate. Initial selection was carried out based on the colony growth rate and the formation of a brownish discoloration zone, which indicates ligninolytic enzyme activity. The superior isolates were then tested for extracellular enzyme activity quantitatively using a UV-Vis spectrophotometer. Among the bacterial isolates, the highest Lac activity is isolated GLS 5.1.2 (173.44 U L-1); the highest MnP activity is isolated GLS 5.3 (177.41 U L-1); and the highest LiP activity is isolated GLS 5.1.2 (1034.05 U L-1). In the group of fungi, isolate SS2 was detected with the highest Lac activity (20.66 U L-1), MnP activity (333.75 U L-1), and LiP activity (2516.13 U L-1). Biodiversity sources in the Gunung Lumut Protected Forest (GLPF) and Sungai Wain Protected Forest (SWPF), East Kalimantan have the potential to produce microbial isolates with unique enzymatic characteristics that have never been reported before. The resulting microbial isolate can be used as a bioactivator in composting organic waste to produce high-quality organic fertilizer.

Education is a key element in improving the quality of human resources in the world. When the quality of human resources increases, life on earth will be better, which in turn encourages high productivity. Conversely, if the quality of human resources decreases, life on earth will also decline. The method used is a qualitative research method with a type of literature review, namely a review of research results and books on existing concepts to be studied in depth with a qualitative approach analysis so as to find new knowledge that can be used in the future. The results of the study are Physical education and sports provide various benefits, including physical health which can reduce the risk of chronic diseases, social development through interaction in time. Character education basically aims to form individuals who have integrity, empathy, a sense of responsibility for themselves and society, and a commitment to upholding truth and justice. Physical activity in physical education also plays an important role in reducing stress and anxiety levels.