Judul: Respon Pertumbuhan Semai Bakau (Rhizophora mucronata Lamk.) terhadap Tingkat Kedalaman dan Lama Penggenangan
Abstrak: Bakau (R. mucronata) represents the type of mangrove plant that growing in a group, located closely or in tidal area. Global warming affected the rise of sealevel brought the longer and deeper inundate of tidal water to mangrove zone. This research aims to analyze the tolerance of bakau seedling from various inundations level and duration. This research was conducted factorial 3 x 3 in Randomize Complete Design with the first treatment is the inundation duration (3-6, 6-9 and 12-15 hours) and the second treatment is the inundation level (until the the root neck, between ¼-½ stem height and between ½-¾ stem height). Results of this research clearly showed that inundation duration bring significant effect to height growth and amount of internodes. Duration inundation treatment on 3-6 hours and 6-9 hours gave better responses than 12-15 hours.
Keyword: Rhizophora mucronata, inundation level, inundation duration

Judul: Pertumbuhan Bakau Merah (Rhizophora mucronata) di Persemaian Mangrove Desa Muara, Kecamatan Teluk Naga, Kabupaten Tangerang
Abstrak: The success of mangrove rehabilitations are influenced by various factors which one of them is the availability of seedling stocks over time. The knowledge about growth process and development of plants which will be used as seedlings are several factors of success of nursery development. Red mangrove (Rhizophora mucronata) is one species of plants which grows in mangrove forest. The conservation of this species is very important because its habitat is at the central zone of mangrove formation and has high reproduction over time so it can be easier to do rehabilitation. The aim of this research is to get the information about R.mucronata growth and development to get better cultivation technique. The treatments were planting of propagul that had pieces of fruit and planting of propagul without pieces of fruit. Based on this research, the planting of propagul without pieces of fruit gave significant effect toward the heigth and length of red mangrove (R.mucronata) propagules development.
Keyword: Rhizophora mucronata, propagul, nursery, growth

Judul: Employee Bus Route Determination Using Integer Linear Programming.
Abstrak: Tulisan ini memberikan formulasi masalah penentuan rute bus karyawan menggunakan pemrograman linear integer. Rute setiap bus berawal dan berakhir di suatu tempat (depot) untuk menjemput karyawan melalui beberapa pos. Setiap pos dikunjungi tepat sekali oleh suatu bus dengan memperhatikan kapasitas setiap bus dan jarak tempuh maksimum setiap bus sehingga dapat dipastikan bahwa bus sampai depot (tempat kerja) sebelum jam kerja dimulai. Fungsi objektif masalah ini adalah meminimumkan biaya operasional seluruh bus yang dioperasikan. Biaya operasional setiap bus diasumsikan sepadan dengan biaya perawatan tetap dan biaya penggunaan yang sesuai dengan jarak perjalanan bus tersebut. Pada contoh studi kasus dengan menggunakan data hipotetik dalam karya ilmiah ini, biaya yang paling minimum diperoleh jika digunakan 4 unit bus. Total jarak yang ditempuh oleh keempat unit bus dalam menjemput atau mengantar karyawan adalah 247 km. Total biaya yang harus dikeluarkan untuk biaya operasional bus karyawan per harinya adalah 894000 rupiah
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