Judul: Kajian pencegahan penambangan pasir di taman nasional Bromo Tengger Semeru Jawa Timur melalui pengembangan budidaya jamur tiram putih (Pleuratus ostreatus) (studi kasus di dusun Karangsuko, desa Taman Satrian kecamatan Tirtoyudo kabupaten Malang Jawa Timur)
Abstrak: One of countryside that abut on TNBTS is Taman Satrian Countryside and as countryside prop. Status is referred as indirectly will push them to interact and exploit forest resources like wood intake or sand mining. Sand Mining is one of interaction that happened in the countryside referred as to forest resources specially in national park.Factor that push the happening of interaction .is have not yet enough basic needs , so society still need earnings addition, because if society basic needs has been fulfilled from prop zone, then will not enter national park and to maintain and protect it (Nasendi, 1986). An implementable program to improve society prosperity and remain to care of continuity Bromo Tengger Semeru National park is by develop conducting effort.Mushroom White Oyster (Pleuratus ostreatus). This Research bent on to know mineworker perception to national park, sand mining and anticipate wether development Mushroom white oyster can prevent mining with three indicators, that is perception, economy value and in working networ.
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Judul: Identifikasi Gangguan dan Kerusakan Flora dan Fauna di Kawasan Wisata Gunung Bromo Taman Nasional Gunung Bromo Jawa Timur
Abstrak: Bromo Tengger Semeru National Park (TNBTS) is a conservation area which has tourism object potential. One of tourism object that owned by area TNBTS and has the unique natural phenomenon is Gunung Bromo, which is encircled by sand sea, found on Tengger Laut Pasir Resort. The visitors in Bromo Mountain Tourism Area consist of various age level, most visitors don't know clearly th efunction of national park, so that seldom their activity generate damage at environment, especially flora and fauna. This research's purpose is for identifiying and evaluating the influence of tourism activity to flora and fauna in Bromo Mountain Tourism Area. Perception result in every tourism trail shown that there're happened some damages to some species of flora and some dirturbances of fauna. These disturbance and damage weren't only because of visitor but also by the society. The result of disturbance and damage identification to flora and fauna that caused by tourism activity are fracturing of branch, combustion, tannery, vandalism, throwing, garbage and hunt. Tourism activities that causing the disturbance and damage of flora and fauan are tracking, camping, hiking, cultural tourism, sunrise seeing, picnic, agrotourism and sight seeing. The result of disturbance and damage identification to flora and fauna that caused by society actibity are wood cutting, combusting and hunt. Society activities that causing the disturbance and damage of flora and fauna are seeking of firewood, seeking of cattle's food and accomplishment of food requirement
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Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular