Judul: Implementasi Digital signature dalam Validasi Online Local E-Government Menggunakan Algoritme RSA dan MD5.
Abstrak: E-Government merupakan salah satu komponen penting dalam instansi pemerintahan. Masyarakat dapat sangat terbantu dengan adanya e-government dalam aktivitas pelayanan publik. Namun seringkali aspek keamanan kurang diperhatikan dalam pengembangan e-government seperti pada validasi permohonan surat keterangan secara online. Hal ini dapat menjadi celah keamanan karena konten dalam permohonan tersebut dapat dengan mudah dirubah dan penerima tidak dapat melakukan verifikasi terhadap keaslian permohonan tersebut. Tujuan penelitian ini adalah mengimplementasikan digital signature pada validasi online sistem local e-government menggunakan algoritme RSA dan MD5. Penelitian ini menghasilkan sistem yang dapat melakukan fungsi dasar pengajuan permohonan dan penerimaan permohonan, serta mampu memberikan layanan standar digital signature seperti pembangkitan kunci, pembangkitan tanda tangan digital, dan verifikasi permohonan. Pengujian terhadap sistem dilakukan berdasarkan skenario yang dibuat serta uji fungsional sistem.
Keyword: digital signature, e-government, keamanan

Judul: Protokol Keamanan Dokumen Digital pada Sistem E-Procurement menggunakan AES, RSA, dan SHA1
Abstrak: Digital signature is an authentic evidence and also has a function like a signature on the printed document, but its use in digital documents. Documents that was sent through the internet, should be ensured their source and destination. This research is decided to implement a security protokol on file transfer process on e-procurement system using AES, RSA, and SHA1 algorithm. Data used in this research is a compressed digital document with ZIP format. The result of this research indicate that the system has been created already capable of generating and verify digital signature. The security services that owned by this system such as confidentiality, entity authentication, data origin authentication, integrity, and non repudiation. The testing process is performed on these security services including confidentiality test, authentication test, integrity test, and non repudiation test. Confidentiality is guaranteed by the encryption process using AES algorithm. In addition, authentication, integrity, and non repudiation service is guaranteed by the digital signature mechanism.
Keyword: Bogor Agricultural University (IPB), tender, digital signature, E-Procurement

Judul: Biology and ecology of the buffalo fly, haematobia exigua de meijere (diptera:muscidae)
Abstrak: The life history of the buffalo fly was observed at room temperature of 27°-29.5°C and at a relative humidity of 48-68 percent. The eggs hatched after 17-22 hours, with an average of 18 hours. First instar larvae measured 1.25 + 0.16 mm long and 0.27 + 0.037 mm wide. reach the second larval stage. It took 6-12 hours to the second instar larvae measured 2.676 +0.187 mm long and 0.353 +0.028 mm wide. The second instar took about 12-24 hours to reach the third larval stage. The third instar measured 6.833 + 0.189 mm long and 0.919 + 0.051 mm wide. It took about 2-3 days for the third instar to become pupae. Duration of the pupal stage was about 5-7 days before the adults emerged. Under laboratory condition, the buffalo fly completed its life cycle in 9.5 to 10.5 days, whereas under field condition it took 9-14 days with an average of 10.5 days. The growth ratio which was based on the measurements of the cephalo-pharyngeal skeleton of each instar was 1.797. The preoviposition period was 8-12 days and mating usually occurred on the 6th or 7th day. The longevity of the male was 29 days, whereas it was 32 days in the female. The range of egg production under laboratory condition was between 20-139 per female fly. The belly and hind legs of the carabao were the most preferred habitat either during cloudy and cool dry or shiny and warm day. When the weather was clear and the carabao was in the shade, the flies tended to be more distributed particularly on the shoulder, dewlap, back and horns. The carabaos had relatively fewer Musca sp. and Stomoxys calcitrans than cattle; never the less carabaos had a higher infestation of buffalo fly than cattle. Oviposition occured either during the day or night but the buffalo flies were more active during the night than in the day time. The effect of various lengths of exposure time of manure in relation to the oviposition was profound. observed, the maximum number of the buffalo flies was occurred when the dung was exposed for 30 minutes. With increasing time of exposure the number and variety of insects also increase. It was evident that Sepsidae and psychodidae were the most dominant insects emerging from the dung. The number of buffalo flies also increased with increasing
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