Judul: Nilai Manfaat Ekonomi Dan Dampak yang Ditimbulkan Wisata Alam Terhadap Perilaku Orang utan di Pusat Rehabilitasi Orangutan Bohorok
Abstrak: Banyaknya orangutan yang dipelihara atau yang diperjualbelikan oleh masyarakat di daerah Aceh dan Sumatcra Utara mendorong dibentuknya Pusat Rehabilitasi Orangutan Bohorok. Pembukaan Pusat Rehabilitasi Orangutan untuk pengunjung tclalt menaikkan perritintaan wisata alam ke Bukit Lawaog. Banyaknya pcngunjung tidak menjadi jaminan semakin banyaknya masukan dana bagi pengelola pusat Rchabilitasi 0rang utan. namun semakin banyaknya pengunjung menyebabkan orang utan semakin terbiasa dengan kehadiran pengunjung sehingga proses peliaran kembali orangutan rehabilitasi akan semakin lambat dan orang utan liar akan ikut terkontaminasi keadaan sedemikian sehingga pola aktivitas hariannya ikut berubah
Keyword: 

Judul: Experience and the Impact of Voluntourism at Samboja Lestari Orangutan Rehabilitation Center
Abstrak: Voluntourism is a form of alternative tourism that growing rapidly in recent years, mixing voluntary works and tourism activity in developing countries, including Indonesia. Borneo Orangutan Survival Foundation (BOSF), alongside with The Great Project (TGP) are organizations that managed this program. The objective of the research was to analyze how program implemented, identify voluntourists‟ characteristics, motives, perceptions, and satisfactions towards the program, also the impact of the voluntourism program. The research was conducted in Samboja Lestari Orangutan Rehabilitation Center on June 1 –July 23 2018 through questionnaires, interview, and field observation. Voluntourist activities were mainly prepares food (for orangutan and sunbear) and enrichment on weekdays, tourism activity on weekends. The biggest groups of voluntourist were female, UK nationality, youth and late adult age class, and working on finance. Environment aspect was the main motivation and benefit for voluntourists, while staff quality and supervision were aspect that received best perception and satisfaction from voluntourists. Various impacts from voluntourism program were received local staff, BOSF, TGP, orangutan and sunbear.
Keyword: experience, impact, Samboja Lestari, voluntourism

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: