Judul: IPB (Bogor Agricultural University)
Abstrak: The abundance and species richness of herbivore insects are not only determined by its host plants, instead it is also determined by its natural enemy complexes. Altitude and habitat types are two environmental factors that may also influence the herbivores as well as its parasitoids. To investigate the influence of these factors toward the abundance and diversity of pod borers, a research was conducted in Palu city (altitude until 90 m dpl) and Toro village, district Kulawi, regency Donggala, about 92 km from Palu (altitude above 700 m dpl). The aim of this research is to study the community structure of herbivore insects and its parasitoid communities. Insect communities studied are the pod borers of various legumes plants, its niche breadth, its herbivore load and parasitoid load of a diverse legum plant community. Pod borers diversity and parasitoid community of Crotalaria striata was studied at different altitude and habitat type.
Keyword: herbivore load, parasitoid load, habitat type, parasitoid composition, Central Sulawesi

Judul: Dinamika Keanekaragaman Jenis dan Karakteristik Habitat Kupu-kupu di Kawasan Kampus IPB Darmaga
Abstrak: The diversity of wildlife including butterfly is one of the factors that becomes a consideration on the declaration of Bogor Agricultural Institute (IPB) as Campus Biodiversity. The development of land use at IPB Darmaga requires a research on the relationship between habitat characteristics with the diversity of butterfly as a comparison with the previous study to provide habitat management data for the management of IPB Darmaga campus. The study was conducted at eight habitat types in IPB Darmaga, which are: 1) Arboretum of Landscape, 2) Al Hurriyah Forest, 3) Sengon Forest, 4) Akasia Forest, 5) DAR Area, Faculty of Forestry, 6) Residential of Lecturers (Perumahan dosen), 7) Cikabayan and 8) Gymnasium Area. The result of this research gets 707 butterfly consisting 55 species of butterfly. Butterflies which were found consists of five families, namely Papilionidae (8 species), Nymphalidae (29 species), Pieridae (8 species), Lycaenidae (4 species) and Hesperidae (6 species). Residential of Lecturers (Perumahan dosen) habitat has the highest species diversity value of 2.93 with an average temperature characteristics of 30.330C, relative humidity average of 75.89%, the value of Leaf Area Index (LAI) of 1.507 and has a diversity of larvae feed plants, butterflies feed plants and shelters. Generally, species diversity index values and the number of butterfly species has decreased compared to previous studies due to changes in land use on IPB Darmaga campus that disturbs the habitat of butterfly.
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Judul: Analisis RSA dengan Penambahan Chinese Remainder Theorem untuk Mempercepat Proses Dekripsi.
Abstrak: RSA merupakan algoritma kunci publik yang keamanannya bertumpu pada kesulitan untuk memfaktorkan modulus n yang sangat besar, tetapi kelebihan ini mengakibatkan lambatnya waktu untuk menyelesaikan proses. Penambahan CRT pada RSA diperlukan untuk mengefisienkan kinerja RSA. Penelitian ini bertujuan untuk mempelajari kinerja RSA dari segi kecepatan dan keamanannya, serta menganalisis algoritmanya. Analisis kecepatan dilakukan dengan mengukur waktu kecepatan rata-rata enkripsi dan dekripsi RSA dan RSA-CRT. Analisis keamanan dilakukan melalui studi literatur. Dari hasil analisis algoritma, dapat ditarik kesimpulan bahwa RSA dan RSA-CRT memiliki kompleksitas yang sama untuk algoritma pembangkitan kunci dan proses enkripsi, yaitu O((lg n)3). Tetapi pada pembangkitan kunci RSA-CRT, ada bagian yang kompleksitasnya O((lg (n/2))2). Algoritma dekripsi RSA memiliki kompleksitas O((lg n)3), sedangkan RSA-CRT memiliki kompleksitas O((lg (n/2))3). Hasil ini dikuatkan oleh hasil implementasi yang memperoleh waktu dekripsi RSA-CRT yang lebih cepat dibandingkan waktu dekripsi RSA. Waktu rata-rata running time proses dekripsi RSA adalah 4211.79 ms, sedangkan pada RSA-CRT diperoleh running time rata-rata proses dekripsi 1372.44 ms. Kata kunci : RSA, RSA-CRT, Chinese Remainder Theorem.
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