Dampak yang ditimbulkan oleh perubahan iklim dapat mempengaruhi aktivitas kehidupan manusia dan ekosistem lainnya. Tujuan dari kegiatan ini adalah: (1) membentuk komunitas masyarakat atau forum adaptasi masyarakat, (2) melakukan sosialisasi dan pelatihan peningkatan kapasitas pengetahuan dan keterampilan forum, (3) memfasilitasi penyusunan rencana aksi adaptasi untuk menghadapi dampak perubahan iklim. Program ini mengunakan beberapa pendekatan, yaitu: partisipatif, wawancara, observasi, Focus Group Discussion (FGD), survey lapangan, sosialisasi dan pelatihan. Pembentukan komunitas masyarakat dalam rangka penguatan kapasitas kelembagaan merupakan bagian dari upaya adaptasi dalam menghadapi dampak perubahan iklim. Hasil observasi dan identifikasi oleh Forum Adaptasi Masyarakat (ForSIKAT), diketahui bahwa Hutan Mangrove merupakan jenis penggunaan/penutupan lahan yang dominan. Pengetahuan dan keterampilan adalah unsur penting dalam melakukan adaptasi. Rencana aksi adaptasi untuk menghadapi dampak perubahan iklim yang telah dilaksanakan adalah, melakukan identifikasi batas wilayah desa dan dusun, memetakan potensi sumber daya lahan di desa, dan membuat rambu peringatan dini pada lokasi yang telah ditentukan.

Community-based programs emphasize the community as the main actor. It started with recruitment and the establishment of community forums which became the benchmark for the success of the program. Furthermore, the community is equipped with knowledge about the identification and utilization of village potential so that the community can play practical roles in maintaining the balance of the ecosystem in the context of disaster control. The involvement of community forums in best practice is an efficient means because it provides space for forums to exchange knowledge and ideas in offering problem-solving solutions. The mining potential in Hulawa Village has a strategic role in improving the community's economy. However, it has an impact on river water resources in Hulawa Village. The direct impact observed in the field is the color change in river water due to mining activities. The potential of the village-owned by Hulawa Village can be maximized to become a village advantage. This needs to be done because it sees the opportunity for the high involvement of the Hulawa village community in village community empowerment programs.

Suatu graf dikatakan terhubung pelangi jika terdapat lintasan antara dua titik yang setiap sisi-sisinya memiliki warna berbeda. Misalkan terdapat suatu graf G tak trivial dengan definisi warna c:E(G)->{1,2,3,...}, maka bilangan terhubung pelangi dari graf G yaitu minimum k dari pewarnaan-k  pelangi yang digunakan untuk mewarnai graf G dan dinotasikan dengan rc(G). Tujuan dari penelitian ini yaitu untuk menentukan bilangan terhubung pelangi pada graf salju (Sn_m). Metode yang digunakan pada penelitian ini yaitu metode studi literatur dengan prosedur sebagai berikut; menggambar graf salju, mencari pola bilangan terhubung pelangi, dan membuktikan teorema bilangan terhubung pelangi pada graf salju (Sn_m). Sehingga diperoleh rc(Sn_m)=m+1 untuk 3<=m<=7 dan m={9,10} dan rc(Sn_m)=m untuk m=8 dan m>=11.

Rainbow vertex-connection number is the minimum k-coloring on the vertex graph G and is denoted by rvc(G). Besides, the rainbow-vertex connection number can be applied to some special graphs, such as prism graph and path graph. Graph operation is a method used to create a new graph by combining two graphs. Therefore, this research uses corona product operation to form rainbow-vertex connection number at the graph resulting from corona product operation of prism graph and path graph (Pm,2 P3) (P3 Pm,2). The results of this study obtain that the theorem of rainbow vertex-connection number at the graph resulting from corona product operation of prism graph and path graph (Pm,2 P3) (P3 Pm,2) for 3 = m = 7 are rvc (G) = 2m rvc (G) = 2.

OPTIMIZATION OF VILLAGE POTENTIALS FOR THE ACHIEVEMENT OF SUSTAINABLE DEVELOPMENT GOALS. The community service program through disaster mitigation and community adaptation to utilize land was carried out in Bulontala Timur village. The purpose of this program is to increase the adaptive capacity of the community to support development in the village. The program uses several methods, namely; interviews, field observations, document studies, discussions. The main activities implemented in this program are disaster mitigation and food security programs. Disaster mitigation activities are packaged in the form of socialization and field action. The food security program is implemented in several activities, namely; socialization, community action to plant and providing agricultural equipment. The results achieved in the disaster mitigation program are the availability of early warning signs and evacuation routes as well as the distribution of tree planting locations. The result of food security activities is the availability of yards of people's homes that have been planted with seeds and seeds of spice plants. These two main programs are to support the achievement of indicators on the Village Building Index and Village SDGs in East Bulontala village.