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The prevalence of myopia is increasing, especially among students, along with the increasing use of gadgets. This study aims to measure the prevalence of myopia and identify the relationship between the duration of gadget use and the incidence of myopia among students of Ma Chung University Malang in July 2023. This study design uses a quantitative approach with a cross-sectional method, involving 125 students aged 17–24 years who were selected using convenience sampling techniques. The research instruments were questionnaires and direct eye examinations. Data analysis used a simple linear regression test to see the relationship between independent and dependent variables. The results showed that 96.8% of respondents used gadgets for more than 2 hours per day and 58.4% of them experienced symptoms of myopia. Factors such as visual habits and outdoor activities moderate the relationship between the duration of gadget use and the incidence of myopia. This study confirms that unhealthy gadget usage habits increase the risk of myopia. Education is needed regarding good visual habits and increased activity.

Kegiatan bermain di sekolah memberikan dampak yang baik pada banyak aspek seperti kesehatan anak melalui aktivitas fisik, aspek kognitif yang membantu anak mengenal lingkungan sekitar, hingga pada aspek sosial melalui komunikasi antar anak dan tenaga pengajar. Elemen lingkungan outdoor sekolah dasar menyediakan ruang yang dapat digunakan anak untuk melakukan eksplorasi berbagai macam permainan, tetapi dengan layout yang dimiliki saat ini oleh sekolah dasar negeri masih terdapat limitasi khususnya pada penyediaan playground. Penelitian ini bertujuan untuk mengetahui pemanfaatan ruang outdoor sekolah dasar sebagai ruang bermain anak pada jam istirahat. Penelitian dilakukan di SDN Gondolayu, Yogyakarta melalui metode behavior mapping yang menghasilkan temuan yang menunjukkan bahwa adanya perbedaan pemanfaatan ruang oleh anak laki-laki dan perempuan serta perbedaan aktivitas bermain oleh anak dalam kelompok usia kelas rendah (kelas 1-3) dengan kelompok usia yang lebih tua (kelas 4-6).

Historically, the outer space structure of the Sentani traditional defense settlement is an ancestral formation aimed at protecting its citizens from outside intervention and defending themselves from tribal wars. The phenomenon of this ancestral formation is maintained until now as a pattern of traditional Sentani defense settlements. From the previous research has been stated, research on traditional settlement patterns on the meaning of defense and the sacredness of outer spatial planning has never been carried out. No research reveals that the sacred outer space in the traditional Sentani settlement is a phenomenon formed by a sacred defense space to protect indigenous peoples from intervention and tribal wars. The research method used is a qualitative approach using the Intrisic Case Study Approach model with the nature of descriptive research. Data analysis in this study used the method of Discovering Cultural Themes. The locus of this research is the oldest village written in historical references and the Sentani traditional village on Lake Sentani today. The data collection method used observation, in-depth participant interviews, measurable pictures, and photographs. The study results found that the structure of the sacred outer space of the traditional settlements formed by the ancestors is still maintained today as a pattern of traditional Sentani defense settlements. The structural pattern of the sacred space forms a defense space in the traditional Sentani settlement forming a sacred outdoor layout for the Sentani indigenous people with one entrance for visitors or guests to the traditional village, namely a wooden pier for the boat landing. The sacred outer spatial arrangement is indicated by the position of the "Obe Imae" traditional house as the center of activity and customary activities are located at the very front, the two customary zones as the seat of tribal chiefs (traditional devices), the third community zone as the residential space of indigenous peoples, the fourth zone ancestors (traditional graves) and the fifth highest worship zone, namely the church as a place of worship to God.

Building security is a mandatory requirement that must be met by a building. Before being built, it is necessary to review academic studies and structural analysis in advance regarding the technical requirements of the building whether it meets the standards or not against existing regulations in Indonesia. Currently, the Brebes Regency Education, Youth and Sports Office has an outdoor tennis court that is not yet representative. So it is planned that the field will be upgraded to become a semi-indoor field, by adding a curved roof in the 2022 fiscal year. The purpose of this community service activity is to determine the safety of semi-indoor roof coverings from a structural point of view. The method of activities carried out to achieve the goal of Community Service (PPM) is the method of literature, field surveys, data processing and report preparation.

Learning activities outside the classroom (Outdoor Study) and outside reading book texts will create a different atmosphere and understanding. One of the ways to study outdoors is to visit museums, the museum informs the public, especially students and teachers, about history classes. Museums are the best place to find historical sources, feel more grateful, get to know the world more broadly. The purpose of this community service writing is to disseminate information about the existence of the OSF Semarang Mission Study House as an alternative to visit, as an interesting place and provide additional knowledge. The methods used in this activity are preparation, visit and evaluation. The result of this dissemination is that the OSF Semarang Study house is an interesting place to visit with relics of interesting items to be known by students and the visiting public. Arrangement of items in a neat and attractive room will make students and the public feel at home and will visit again