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: 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: 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.
Keyword: