Judul: Demonstration of Species Composition,  Stand Structure, Biomass, and Carbon Storage in Stands at the Bamboo Arboretum,  IPB Dramaga Campus
Abstrak: Ekosistem hutan dapat menyerap gas rumah kaca dengan cara menyerap CO2 dari udara menjadi simpanan karbon dalam vegetasi. Arboretum Bambu Kampus IPB Dramaga menjadi salah satu ruang terbuka hijau di dalam kampus dalam upaya mengurangi pencemaran lingkungan kota. Tujuan penelitian ini mendeskripsikan komposisi jenis, struktur vegetasi, menduga potensi biomassa, simpanan karbon, dan serapan karbon dioksida (CO2), serta mendeskripsikan sifat-sifat tanah di Arboretum Bambu Kampus IPB Dramaga. Metode yang digunakan yaitu pengukuran diameter dan tinggi (pohon, tiang, pancang, kayu mati, dan pohon mati) serta pengukuran kadar air tumbuhan bawah, semai, serasah, dan ranting. Pengambilan data tanah dilakukan dengan metode purposive sampling. Hasil penelitian menunjukkan komposisi jenis pada tegakan hutan di Arboretum Bambu Kampus IPB Dramaga didominasi oleh jenis Hevea brasiliensis (zona karet dan zona Dipterocarpaceae), Bambusa blumeana (zona bambu), dan Swietenia mahagoni (zona campuran). Kecuali zona bambu struktur horizontal tegakan pohon di Arboretum Bambu Kampus IPB Dramaga berbentuk huruf “J” terbalik. Stratifikasi tajuk hutan di Arboretum Bambu Kampus IPB Dramaga didominasi oleh stratum C. Zona karet menjadi zona dengan nilai tertinggi biomassa (112,54 ton/ha), simpanan karbon (52,89 ton/ha), dan serapan karbon dioksida (196,67 ton/ha). Kandungan C-organik tanah di Arboretum Bambu Kampus IPB Dramaga pada zona Dipterocarpaceae, zona karet, dan zona bambu termasuk tinggi, sedangkan pada zona campuran termasuk sedang.
Keyword: Biomass, carbon dioxide uptake, carbon storage, species composition, stand structure

Judul: Analisis Biomassa dan Kandungan Karbon pada Jenis Serasah Daun Tanaman Hutan Kota di Arboretum Arsitektur Lanskap IPB, Bogor
Abstrak: Urban forest functioned as oxygen balancing (O2) and carbon dioxide (CO2), reduce pollutant, stored and emission carbon. This research aimed to measured biomass, carbon dioxide content, connection between biomass and binding carbon, and measured carbon dioxide absorption ability on manure type of city Forest plant on Arboretum Architecture Landscape IPB, Bogor. Method used in this research was destructive method during 7 weeks to 7 types of city plants were : trembesi (Samana saman), merbau (Intsia bijuga), dahu (Deacontomelon dao),ki putri (Podocarpus neriifolius), kayu manis (Cinnamonum zeylanicum), nangka (Artocarpus heterophylus), simpur (Dillenia indica). Trembesi (Samanea saman) and merbau (Intsia bijuga) was such type that has both highest binding biomass and carbon from seven type of city forest plants. Besides that leaf manure type from trembesi (Samanea saman) and merbau (Intsia bijuga) that have highest ability to absorb CO2 about 4.749 and 4.007 ton/ha/year. Urban forest development by plant both trembesi and timber tree types were as one alternative to reduce increasingly emission of carbon.
Keyword: urban forest., carbon content, biomass

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: