Judul: Perception, Preference, and Willingness to Pay Young Generation towards Organic Rice
Abstrak: Proses budidaya organik adalah upaya yang dapat dilakukan dalam mewujudkan pembangunan pertanian yang berkelanjutan. Pertanian organik akan terus berkembang jika sektor hilirnya turut merespon dengan baik. Segmen generasi muda adalah segmen potensial yang memiliki kesadaran akan pangan berkelanjutan. Penelitian ini dilakukan dengan tujuan untuk menganalisis persepsi, preferensi, dan tingkat kesediaan membayar generasi muda terhadap beras organik. Penelitian ini dilaksanakan pada bulan Januari hingga Mei tahun 2023. Jenis data yang digunakan pada penelitian ini bersumber dari data primer berupa 161 responden generasi muda di Indonesia. Metode yang digunakan dalam penelitian ini adalah analisa deskriptif dan Discrete Choice Experiment (DCE). Hasil penelitian ini menunjukkan generasi muda memiliki potensi dan persepsi yang positif terhadap beras organik, namun besaran willingness to pay terhadap beras organik masih lebih rendah dibandingkan harga rata-rata riil beras organik. Generasi muda bersedia membayar lebih beras organik lebih tinggi Rp10.776,83 dibandingkan beras konvensional., The process of organic cultivation is an effort that can be done in realizing sustainable agricultural development. Organic agriculture will continue to grow if the downstream sector also responds well. The younger generation is a potential segment that has awareness of sustainable food. This research was conducted with the aim of analyzing the perception, preference, and willingness to pay for organic rice by the younger generation. This research was carried out from January to May 2023. The type of data used in this study comes from primary data in the form of 161 respondents from the younger generation in Indonesia. The method used in this research is descriptive analysis and Discrete Choice Experiment (DCE). The results of this research indicate that the younger generation has potential and positive perceptions of organic rice, however, the amount of willingness to pay for organic rice is still lower than the real average price of organic rice. The younger generation is willing to pay more for organic rice which is Rp. 10,776.83 higher than conventional rice.
Keyword: beras organik, discrete choice experiment, generasi muda, persepsi, willingness to pay

Judul: Young Generation’s Willingness to Pay for Organic Vegetables and Factors Affecting It in Bogor and Tasikmalaya
Abstrak: Generasi muda menjadi generasi yang memiliki awareness terhadap lingkungan dan kesehatan. Generasi ini cenderung memilih makanan yang bersih, organik, dan alami. Sayuran organik merupakan produk dengan tingkat konsumsi tertinggi diantara produk pertanian organik lainnya. Sayuran organik umumnya memiliki harga lebih mahal, namun dapat memberikan manfaat lebih bagi kesehatan dibandingkan non organik. Tujuan penelitian yaitu (1) mengidentifikasi persepsi generasi muda terhadap sayuran organik dibandingkan sayuran non organik, (2) mengestimasi nilai willingness to pay (WTP) sayuran organik, dan (3) menganalisis faktor-faktor yang memengaruhi WTP. Pengumpulan data dilakukan melalui penyebaran kuesioner online pada akhir Februari hingga awal Mei 2023. Jumlah responden sebanyak 200 responden yang tersebar di wilayah Bogor dan Tasikmalaya. Analisis data pada penelitian meliputi analisis faktor, contingent valuation method (CVM), dan regresi logistik biner. Hasil penelitian menunjukkan (1) persepsi generasi muda terhadap sayuran organik meliputi persepsi kualitas sayuran organik, persepsi manfaat sayuran organik bagi lingkungan, persepsi kepercayaan terhadap sayuran organik, dan persepsi manfaat sayuran organik bagi kesehatan. (2) Sebagian besar responden bersedia membayar sayuran organik dengan harga lebih tinggi dan nilai WTP Bogor lebih rendah dibandingkan nilai WTP Tasikmalaya. (3) Faktor yang berpengaruh signifikan terhadap WTP generasi muda yaitu persepsi kepercayaan terhadap sayuran organik dan persepsi manfaat sayuran organik bagi kesehatan., The younger generation is the generation that has awareness of the environment and health. This generation tends to choose clean, organic, and natural foods. Organic vegetables are products with the highest consumption level among other organic agricultural products. Organic vegetables generally have a higher price, but can provide more health benefits than non-organic. The research objectives are (1) to identify young generation’s perceptions of organic vegetables compared to non organic vegetables, (2) to estimate willingness to pay (WTP) value of organic vegetables, and (3) to analyze the factors that influence WTP. Data collection was carried out by distributing online questionnaires from late February to early May 2023. The number of respondents was 200 respondents spread across the Bogor and Tasikmalaya areas. Data analysis in this research includes factor analysis, contingent valuation method (CVM), and binary logistic regression. The results showed (1) young generations’ perceptions of organic vegetables included perceived quality of organic vegetable products, perceived benefits of organic vegetables for the environment, perceived trust in organic vegetables, and perceived benefits of organic vegetables for health. (2) Most of the respondents are willing to pay for organic vegetables at a higher price and Bogor's WTP value is lower than Tasikmalaya's WTP value. (3) Factors that have a significant effect on the younger generation’s WTP are the perception of trust in organic vegetables and the perception of the benefits of organic vegetables for health.
Keyword: CVM, green consumerism, perception, WTP, young generation

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