Judul: Economic Impact Analysis of the Serulingmas  Zoo Banjarnegara Area after the Change in Management
Abstrak: Taman Rekreasi Margasatwa (TRM) Serulingmas merupakan salah satu objek wisata sekaligus kawasan konservasi di Banjarnegara yang mengalami perubahan pengelolaan manajemen dari Unit Pelaksana Teknis Daerah (UPTD) menjadi Perusahaan Umum Daerah (Perumda). Namun, setelah dua tahun transisi pengelolaan sempat ditutup sementara karena pandemi Covid-19. Berdasarkan hasil wawancara, dari tahun 2022 sampai saat ini, jumlah kunjungan sudah mulai membaik. Berdasarkan hal tersebut tujuan dari penelitian ini yaitu (1) Menganalisis sistem pengelolaan wisata konservasi Kebun Binatang Serulingmas Banjarnegara setelah adanya perubahan pengelolaan manajemen. (2) Menganalisis persepsi wisatawan terhadap kondisi lingkungan wisata. (3) Menganalisis dampak ekonomi dari keberadaan Kebun Binatang Serulingmas saat ini. Metode yang digunakan dalam penelitian ini adalah analisis deskriptif, Skala Likert, dan analisis Multiplier Effect. Hasil penelitian menunjukkan bahwa: (1) Setelah perubahan pengelolaan ke pihak Perumda, terjadi peningkatan total setoran ke pemerintah daerah yang signifikan. (2) kondisi lingkungan Kebun Binatang Serulingmas Banjarnegara dalam kondisi baik. (3) Nilai Keynesian Income Multiplier yaitu 0,063, artinya dampak ekonomi Kebun Binatang Serulingmas pada masyarakat lokal masih rendah. Namun, pengeluaran wisatawan sudah mampu memberikan dampak baik pada pendapatan unit usaha dan tenaga kerja lokal, dengan nilai Ratio Income Multiplier Type I dan Type II berturut-turut sebesar 1,55 dan 1,65., Taman Rekreasi Margasatwa (TRM) Serulingmas is a tourist attraction and conservation area in Banjarnegara, Indonesia. It underwent a management change from the Technical Implementation Unit (UPTD) to the Regional Public Company (Perumda). After two years of transition, it was temporarily closed due to the Covid 19 pandemic. The objectives of the research are : (1) Analyzing the management system of Serulingmas Banjarnegara Conservation Tourism after the change management;(2) analyzing tourism perception of tourism environment conditions; (3)Analyzing the economic impact of the current existence of the Serulingmas Zoo. This research uses the descriptive analysis, Likert Scale, and Multiplier Effect analysis. The results of this research indicate that (1) the management change led to a significant increase in revenue for the local government. (2) visitors perceived the environmental condition of the zoo positively. (3) the economic impact of the zoo on the local community was still low, with a Keynesian Income Multiplier value of 0.063. However, tourist spending had a positive impact on the income of local businesses and workers, with Ratio Income Multiplier Type I and Type II values of 1.55 and 1.65.
Keyword: Conservation area, descriptive analysis, likert scale, multiplier effect, perception

Judul: Management of Sumatran Elephant Welfare and Utilization as a Tourism Object in Serulingmas Wildlife Recreation Park, Banjarnegara
Abstrak: Gajah Sumatra merupakan satwa kategori kritis terancam punah. Kondisi tersebut menyebabkan perlu peran lembaga konservasi eksitu, salah satunya adalah Taman Rekreasi Margasatwa Serulingmas. Penelitian bertujuan menganalisis pengelolaan dan tingkat kesejahteraan Gajah Sumatra, mengidentifikasi bentuk pemanfaatan Gajah Sumatra, menganalisis persepsi dan preferensi pengunjung terhadap pemanfaatan Gajah Sumatra, serta merumuskan strategi pengembangan pemanfaatan Gajah Sumatra. Data didapatkan dari observasi lapang, studi literatur, wawancara dengan animal keeper dan pengunjung. Penilaian implementasi kesejahteraan Gajah Sumatra dalam kategori sangat baik dengan nilai rata-rata 89,96. Bentuk pemanfaatan Gajah Sumatra di TRM Serulingmas meliputi kegiatan pemberian pakan, berfoto, menyentuh gajah dan display gajah. Secara keseluruhan pengunjung memiliki persepsi yang baik, dengan nilai rata-rata TCR 82,94% untuk pengelolaan kesejahteraan Gajah Sumatra dan TCR untuk pemanfaatan gajah sebagai objek wisata sebesar 79,22%. Mayoritas pengunjung tertarik dengan keberadaan Gajah Sumatra di TRM Serulingmas. Strategi pengembangan pemanfaatan Gajah Sumatra dapat dilakukan dengan penetapan harga biaya tambahan, pengembangan program wisata dan peningkatan sarana dan prasarana wisata., Sumatran elephants are critically endangered. This condition calls for the role of exsitu conservation institutions, one of which is Taman Rekreasi Margasatwa Serulingmas. The study aimed to analyze the management and welfare level of sumatran elephants, identify the form of utilization of sumatran elephants, analyze visitor perceptions and preferences for the use of sumatran elephants, and formulate a development strategy for the use of sumatran elephants. Data were obtained from field observations, literature studies, interviews with animal keepers and visitors. The assessment on sumatran elephants welfare management resulted in a score of 89.96, or in good category. Sumatran elephants were used in tourism activities, which included feeding, taking pictures, touching elephants and elephant displays. Overall, visitors had good perception of welfare management of sumatran elephants with TCR score of 82.94% and the use of sumatran elephant as a tourist attraction with TCR score of 79.22%. The majority of visitors were interested in the presence of sumatran elephants in TRM Serulingmas. The strategy propose for developing the use of sumatran elephants include setting surcharge prices, special member promotions, developing tourism programs and improving tourist facilities and infrastructure.
Keyword: gajah sumatra, kesejahteraan satwa, pemanfaatan, wisata

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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