Judul: Preservation Techniques and Visitor Perception  Towards Conservation Efforts at TMII Jakarta Bird Park Jakarta
Abstrak: Kuau raja merupakan jenis burung yang populasinya semakin terbatas sehingga diperlukan upaya konservasi ex-situ untuk mendukung upaya pelestariannya. Taman Burung TMII merupakan lembaga konservasi ex situ, sekaligus sebagai sarana eduwisata bagi masyarakat. Penelitian ini bertujuan mengidentifikasi aspek pemeliharaan kuau raja, persepsi dan pengetahuan pengunjung, dan nilai WTP pengunjung terhadap upaya pelestarian kuau raja di Taman Burung TMII. Penelitian ini dilaksanakan di Taman Burung TMII Jakarta pada bulan Maret sampai April 2022. Metode yang digunakan adalah observasi lapang, wawancara, survei, dan studi literatur. Hasil penelitian menunjukkan aspek pemeliharaan sudah cukup baik, namun perlu beberapa perbaikan dan penambahan fasilitas perkandangan dan pakan. Pengunjung memiliki persepsi positif dan pengetahuan cukup tinggi tentang kuau raja sebagai spesies burung dilindungi, dan perlunya usaha pelestariannya baik insitu maupun exsitu. Pengunjung bersedia membayar untuk mendukung pelestarian kuau raja dengan nilai rataan WTP sebesar Rp. 36.111 dengan perkiraan nilai ekonomi total sebesar Rp. 188.968.000,00 perbulan. Faktor tingkat pendidikan terakhir dan besarnya pendapatan pengunjung berpengaruh nyata terhadap besar-kecilnya nilai WTP dari pengunjung., Great argus is a species of bird whose population is increasingly limited so ex-situ conservation efforts are needed to support its conservation efforts. TMII Bird Park is an ex situ conservation and as of tourism-based education for public. This study aims to identify aspects of the maintenance of Great argus, the perception and knowledge of visitors, and the value of visitors' WTP for efforts to preserve Great argus in the TMII Bird Park. This research was conducted at TMII Bird Park Jakarta from March to April 2022. The methods used are field observations, interviews, surveys, and literature studies. The results showed that the maintenance aspect was quite good, but it needed some improvements and additional cage and feed facilities. Visitors have a positive perception and high knowledge about the great argus as a protected bird species, and the need for conservation efforts both in situ and exsitu. The average value of the visitor's WTP is Rp. 36.111 with an estimated total economic value of Rp. 188.968.000 / month. Factors influencing the WTP value of visitor respondents are the last level of education and income.
Keyword: Great argus, preservation techniques, visitor perception

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: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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