Judul: The Effectiveness of Balanced Nutrition Online Education Using WhatsApp Application for Adolescents
Abstrak: Masa remaja merupakan masa perubahan yang berlangsung sangat cepat sehingga dapat menimbulkan masalah gizi. Salah satu cara dalam mengatasi permasalahan gizi pada remaja adalah edukasi gizi. Edukasi menggunakan aplikasi WhatsApp menunjukkan hasil yang baik. Namun, penelitian remaja di Jawa Barat masih jarang ditemukan sehingga peneliti ingin mengembangkan media edukasi gizi berupa edukasi online yang diberikan melalui aplikasi WhatsApp berdasarkan pesan gizi seimbang serta melakukan analisis pengaruh media edukasi gizi tersebut terhadap perubahan pengetahuan dan sikap remaja. Penelitian dilakukan dengan partisipasi 83 remaja yang sebagian besar subjek berjenis kelamin perempuan (63,9%), berusia 17 tahun (56,6%), berada dalam keluarga yang kecil (92,8%), dan memiliki status gizi yang normal (66,3%). Pemberian edukasi online dengan menggunakan aplikasi WhatsApp mampu meningkatkan pengetahuan (p=0,000) dan sikap (p=0,000) terkait gizi seimbang pada subjek. Analisis daya terima menunjukkan bahwa sebagian besar subjek menyatakan bahwa edukasi online yang diberikan cukup menarik (82,9%), durasi video cukup (97,6%), sangat mudah dipahami (80,5%), dan sangat mudah diakses (61%)., Adolescence is a period of rapid change that could cause nutritional problems. One way to overcome nutritional problems in adolescents is nutrition education. Education using WhatsApp application shows good results but research on adolescents in West Java is still rarely found. Therefore, researcher wants to develop nutrition education media in the form of online education provided through WhatsApp application based on balanced nutrition and analyze the effect of the nutritional education media on changes in adolescent knowledge and attitudes. The study was conducted with the participation of 83 adolescents, most of whom were female (63,9%), aged 17 years (56,6%), were in a small family (92,8%), and had normal nutritional status (66,3%). Online education using WhatsApp application increased knowledge (p = 0,000) and attitudes (p = 0,000) related to balanced nutrition of subjects. Acceptance analysis showed that most of the subjects stated that the online education provided was quite interesting (82,9%), the video duration was sufficient (97,6%), very easy to understand (80,5%), and very accessible (61%).
Keyword: nutrition attitude, nutrition knowledge, online education, WhatsApp, nutrition education

Judul: The Effect of Nutrition Education through Nutri-c Media and Lecture Methods on Knowledge and Attitudes of Balanced Nutrition in Elementary School Students
Abstrak: Pendidikan gizi seimbang menjadi salah satu upaya untuk meningkatkan penerapan Pedoman Gizi Seimbang (PGS) pada anak usia sekolah. Penelitian ini bertujuan menganalisis pengaruh pemberian pendidikan gizi seimbang melalui media nutri-c terhadap pengetahuan dan sikap gizi siswa sekolah dasar. Penelitian ini menggunakan desain quasi experimental yang dilaksanakan pada bulan Maret-Mei 2023 di SDN Ciherang 04, Kabupaten Bogor. Subjek merupakan siswa kelas 5 SD dengan jumlah 44 orang yang dipilih secara purposive dan dibagi ke dalam dua kelompok penelitian. Kelompok intervensi 1 mendapatkan intervensi menggunakan media nutri-c sedangkan kelompok intervensi 2 menggunakan metode ceramah. Hasil uji beda Wilcoxon menunjukkan terdapat perbedaan pengetahuan gizi seimbang yang signifikan setelah intervensi pada kelompok intervensi 1 (p=0,000). Tidak terdapat perbedaan yang signifikan terkait sikap gizi seimbang setelah intervensi pada kelompok intervensi 1 (p=0,063). Perbedaan pengetahuan (p=0,000) dan sikap (p=0,002) gizi seimbang sebelum dan setelah intervensi pada kelompok intervensi 2 menunjukkan hasil yang signifikan. Media nutri-c lebih efektif meningkatkan pengetahuan subjek. Hasil uji beda Mann Whitney U menunjukkan tidak terdapat perbedaan yang signifikan terkait pengetahuan (p=0,924) dan sikap (p=0,212) gizi seimbang antara kelompok penelitian. Tidak terdapat hubungan yang signifikan antara pengetahuan dengan sikap gizi seimbang subjek setelah mendapatkan intervensi berdasarkan hasil uji korelasi Spearman (p<0,05)., Balanced nutrition education is one of the efforts to improve the implementation of Balanced Nutrition Guidelines (PGS) for school-age children. This study aimed to analyze the effect of providing balanced nutrition education through nutri-c media on the nutritional knowledge and attitudes of elementary school students. This study used a quasi-experimental design which was conducted from March to May 2023 at SDN Ciherang 04, Bogor Regency. The subjects were 5th grade elementary school students with a total of 44 people selected purposively and divided into two research groups. The intervention group 1 received intervention using nutri-c media while the intervention group 2 used the lecture method. The results of the Wilcoxon differential test showed that there were significant differences in knowledge of balanced nutrition after the intervention in the intervention group 1 (p=0.000). There was no significant difference regarding the attitude of balanced nutrition after the intervention in the intervention group 1 (p=0.063). Differences in knowledge (p=0.000) and attitudes (p=0.002) about balanced nutrition before and after the intervention in the intervention group 2 showed significant results. Nutri-c media is more effective in increasing subject knowledge. The results of the Mann Whitney U test showed that there were no significant differences in knowledge (p=0.924) and attitude (p=0.212) to balanced nutrition between the study groups. There was no significant relationship between knowledge and balanced nutrition attitudes of the subjects after receiving the intervention based on the results of Spearman's correlation test (p<0.05).
Keyword: balance diet guideline, nutri-c, nutrition attitude, nutrition education media, nutrition knowledge

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology