Judul: Welfare Rate and Management with Economic Valuation of Sumatran Tigers in Ragunan Zoo
Abstrak: Keberadaan harimau sumatera sebagai salah satu jenis satwa dilindungi dan menjadi satwa prioritas konservasi di Indonesia, masih dihadapkan pada permasalahan perburuan dan perdagangan ilegal karena tingginya nilai ekonomi. Salah satu upaya konservasi harimau sumatera di ex-situ dilakukan di kebun binatang. Penelitian ini bertujuan untuk menganalisis penerapan aspek manajemen kesejahteraan dan menilai tingkat kesejahteraan satwa, serta menganalisis nilai ekonomi harimau sumatera dan kesediaan membayar dari pengunjung (WTP). Metode yang digunakan yaitu observasi langsung dan wawancara kepada pengunjung dan pengelola TMR. Hasil penelitian menunjukkan bahwa manajemen kesejahteraan harimau sumatera di TMR dilakukan dengan sangat baik. Pencapaian implementasi kesejahteraan harimau sumatera di TMR memiliki nilai sebesar 86 yang termasuk kedalam kategori sangat baik. Biaya pemeliharaan yang dikeluarkan oleh pengelola setiap bulannya sebesar Rp56.709.490 meliputi biaya pemberian pakan, perawatan kandang, perawatan kesehatan dan upah karyawan. Sedangkan nilai WTP (Willingness to Pay) untuk konservasi harimau sumatera di TMR yaitu sebesar Rp1.394.412/individu/tahun.
Keyword: economy, ragunan, sumatran tiger

Judul: Dampak Pandemi COVID-19 terhadap Pengelolaan Kesejahteraan Harimau Sumatera dan Dukungan Masyarakat untuk Pelestariannya di Kebun Binatang Gembira Loka, Yogyakarta
Abstrak: Harimau sumatera merupakan salah satu satwa yang populasi di alam semakin menurun dan berstatus kritis. Upaya untuk meningkatkan populasinya melalui konservasi ex-situ, seperti di KB Gembira Loka. Selama Covid-19, mengharuskan pengelola memikirkan kesejahteraan satwa krismatik dan meningkatkan dukungan dari pengunjung. Penelitan ini bertujuan menghitung besaran dan sumber biaya pengelolaan, menganalisis tingkat kesejahteraan harimau sumatera, serta mengidentifikasi persepsi dan kesediaan pengunjung dalam mendukung pelestariannya. Penelitian menggunakan metode observasi lapang, wawancara, dan kuesioner. Hasil penelitian menunjukkan bahwa sumber biaya pengelolaan berasal dari tiket pengunjung, kerjasama, dan donasi. Pengelolaaan kesejahteraan harimau sumatera telah sesuai dengan PERDIREJEN PHKA yakni 96,65% (sangat baik). Selama Covid-19, terdapat perubahan pada substitusi pakan dan tes PCR bagi satwa. Total capaian pengunjung bernilai 98,37% pada data aktual dan 95,51% pada data potensial, yang berarti pengunjung berpersepsi positif terhadap pernyataan yang diajukan. Kesediaan membayar pengunjung Rp 81.670 pada data aktual dan Rp 80.000 pada data potensial., Sumatran tigers are one of the animals whose population in nature is declining and has a critical status. Efforts to increase its population through ex-situ conservation, such as in KB Gembira Loka. During Covid-19, it requires managers to think about the welfare of chrymatic animals and increase support from visitors. This research aims to calculate the amount and source of management costs, analyze the level of welfare of Sumatran tigers, and identify the perception and willingness of visitors to support their preservation. The study used field observation methods, interviews, and questionnaires. The results showed that the source of management costs came from visitor tickets, cooperation, and donations. The management of Sumatran tiger welfare is in accordance with the PERDIREJEN PHKA, which is 96.65% (very good). During Covid-19, there have been changes in feed substitution and PCR tests for animals. The total visitor achievement was valued at 98.37% in the actual data and 95.51% in the potential data, which means that the visitor had a positive perception of the statement submitted. Willingness to pay visitors IDR 81,670 on actual data and IDR 80,000 on potential data.
Keyword: animal welfare, perception, sumatran tiger

Judul: Design and fabrication of one-dimensional photonic crystal as real time optical sensor for sugar solution concentration detection:
Abstrak: This study is developed from the results of theoretical study of onedimensional photonic crystals with two defects that have unique characteristics in response of Photonic Band Pass (PPB) on the frequency interval of Photonic Band Gap (PBG). This study focused on prototyping photonic crystal sensor based on refractive index changes in a second defect that serves as a receptor in which to respond transmitansi value changes, so that could be used as a single-frequency index sensing. The reference wavelength that used in this study is 525 nm. This research was conducted with some of the following stages: theoretical model of observation through implementation and simulation, fabrication of photonic crystal, characterization, sensing test, assembly and instrumentation devices, and device performance measurement. Fabrication process of a prototype of this system by means of electron beam evaporation equipment in a sample chamber at pressure of 10-3 Pa with BK-7 glass substrate at temperature 573 K. Each of the photonic cells is composed of a high index layer of OS-5 with refractive index of n  2.10 , and an equal optical thickness low index layer of MgF2 with n 1.38. In the first defect cell, the high index layer has twice the thickness of the other layers with the low index layer left unchanged, while in the second defect cell separated by 6 unit cells, the first layer is void to be filled with the sample solution.
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