Judul: Management Training and Utilization of Palm Cockatoo as Display Animal in TMII Jakarta Bird Park
Abstrak: Kakatua raja merupakan salah satu spesies burung dilindungi di Indonesia yang dikonservasi dan dimanfaatkan sebagai satwa peraga untuk menarik minat pengunjung di Taman Burung TMII Jakarta. Penelitian ini bertujuan mengidentifikasi manajemen pelatihan, menganalisis persepsi dan preferensi responden, serta menghitung nilai ekonomi berdasarkan kesediaan membayar untuk pemanfaatan kakatua raja di taman Burung TMII Jakarta. Penelitian ini dilaksanakan di Taman Burung TMII Jakarta pada Maret sampai April 2022. Metode yang digunakan adalah observasi lapang, wawancara, survey, dan studi literatur. Hasil penelitian menunjukkan bahwa manajemen pelatihan kakatua raja terdiri dari tiga tahap yaitu adaptasi, bonding, dan latihan. Persepsi responden cenderung setuju mengenai pemanfaatan dan konservasi kakatua raja di Taman Burung TMII Jakarta. Nilai total kesediaan membayar yang bersedia responden keluarkan terhadap interaksi kakatua raja sebagai satwa peraga adalah sebesar Rp 13.474 dengan rataan jumlah pengunjung 7268 orang per bulan dengan total pendapatan ekonomi sebesar Rp 97.926.737/bulan., Palm cockatoo (Probosciger aterrimus) is one of the protected bird species in Indonesia that is conserved and used as a display animal to attract visitors at TMII Jakarta Bird Park. This study aims to identify training management, analyze respondents’perceptions and preferences, and calculate the economic value based on willingness to pay (WTP) for the use palm cockatoo at TMII Jakarta Bird Park. This research was conducted at TMII Jakarta Bird Park on March to April 2022. The methods used in this research are field observations, interviews, surveys, and literature studies. The results showed that the palm cockatoo management training consisted of three stages, namely adaption, bonding, and training. Respondents’perceptions tend to agree about the use and conservation of palm cockatoo at TMII Jakarta Bird Park. The total value of willingness to pay that respondents are willing to spend on the interactions of the palm cockatoo as a display animal is Rp. 13.474. with an average number of visitor of 7268 people/month with a total economic income of Rp 97.926.737/month.
Keyword: Palm cockatoo, perception, preference, training management, willingness to pay

Judul: Javan Hawk-eagle Welfare Management and Utilization as Display Animal in TMII Jakarta Bird Park
Abstrak: Ketertarikan pengunjung merupakan salah satu aspek yang menjadi pertimbangan bagi pengelola Taman Burung TMII dalam memanfaatkan elang jawa sebagai satwa peraga. Penelitian ini bertujuan menilai tingkat kesejahteraan elang jawa di Taman Burung TMII Jakarata dan menghitung nilai ekonomi elang jawa berdasarkan kesediaan membayar oleh pengunjung atas setiap bentuk atraksi elang jawa sebagai satwa peraga. Penelitian ini dilaksanakan di Taman Burung TMII Jakarta pada bulan Maret sampai April 2021. Metode yang digunakan adalah observasi lapang, wawancara, dan studi literatur. Hasil penelitian menunjukkan bahwa capaian implemetasi kesejahteraan elang jawa di Taman Burung TMII termasuk kedalam kategori sangat baik. Persepsi responden cenderung setuju mengenai pemanfaatan elang jawa sebagai satwa peraga. Nilai total WTP yang bersedia responden keluarkan terhadap interaksi elang jawa sebagai satwa peraga adalah sebesar Rp 57.050 dengan rataan jumlah pengunjung 8474 orang per bulan dengan total pendapatan ekonomi sebesar Rp 483.441.700/bulan., Visitors' interest is one aspect that becomes a consideration for the management of the TMII Bird Park in utilizing the Javan hawk-eagle as a display animal. This study aims to assess the welfare of the Javan hawk-eagle in the TMII Jakarta Bird Park and calculate the economic value of Javan hawk-eagle based on the visitors’ willingness to pay for every form of Javan hawk-eagle attraction as a display animal. This research will be conducted at the TMII Bird Park in Jakarta from March to April 2021. Methods used for data collection are field observations, interviews, and literature studies. The Results that the achievement of the implementation of the welfare of the Javan eagle in the TMII Bird Park is included in the very good. Respondents' perceptions tend to agree about the use of the Javan eagle as a display animal. The total value of WTP that respondents are willing to spend on the interactions and attractions of the Javan eagle as a display animal is Rp. 57,050. with an average number of visitor of 8747 people/month with a total economic income of Rp 483.441.700/month.
Keyword: Javan Hawk-eagle, welfare, willingness to pay (WTP) analysis

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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