Judul: Aplikasi Keamanan Data Shapefile Menggunakan Algoritme Kriptografi AES
Abstrak: Geographic Information System (GIS) is an important part of information systems because GIS contains classified spatial data and information in any fields. This research is focused on securing GIS vector data (shapefiles) and also reading the shapefiles. A shapefile combines maps and tables, both have a related information on each other. The usage of Rijndael (AES) cryptography algorithm and Key Derivation Function (KDF) would assist in improving the security of shapefiles. However, besides cryptography algorithm, authentication service is also implemented to improve the security mechanism in order to prevent unauthorized users gain full access to the application which provides the shapefile security. The application was executed using fifteen shapefiles and analyzed in terms of loading time, size, and iteration count between the encrypted and non-encrypted shapefiles. The biggest shapefile (33.79 MB) could be decrypted and displayed in two seconds with 10000 iterations (ten times in complexity from the standard iteration, which is 1000) and fifteen characters of salt. By using this application, authorized users could read their shapefiles with common functions (zoom, extent, pan, etc) and protect the classified one with no penalty in overall performance.
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Judul: Pengembangan Bagian Offline pada Shapefile Encryption System (SES)
Abstrak: Geographical Information System (GIS) data are classified as expensive and sensitive data. The biggest threat to be dealed by GIS data at the moment is the spread of illegally accessed and distributed by unauthorized party. Currently, most of protection methods that are applied on GIS data focused on the use of digital watermarking. But, this method does not restrict GIS data from being accessed and distributed illegally. This research intends to develop a protection system for GIS data in shapefile form by combining Advanced Encryption Standard (AES) algorithm, Rivest Shamir Adleman (RSA) algorithm, and image steganography technique Least Significant Bit (LSB) which can provide confidentiality and authentication service. As a result, a standalone application is built using the security life cycle development method. The application is being tested on five different shapefile data to measure the effect from four different RSA key lengths towards the execution times needed to perform encryption and decryption process.
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Judul: Proses Kelahiran Pada Ternak Sapi, Kuda, Domba dan Babi
Abstrak: Tanda-tanda akan datangnya suatu kelahiran pada hewan ternak pada umumnya hampir sama dari spesies ke spesies. Tanda-tanda itu misalnya hewan induk gelisah, ligamenta sacrospinosum et tuberosum mengendor, edema pada vulva, lendir sumbat cervix mencair, kolostrum telah mencair dan mudah dipijit keluar dari puting susu dan sebagainya. Sebelum perejanan normal mulai berlangsung, fetus bia sanya mengambil posisi dalam uterus yang khas untuk hewan bersangkutan. Pada waktu kelahiran fetus ditempatkan sede mikian rupa sehingga dapat dikeluarkan melalui saluran ke- lahiran dengan kesulitan seminimal mungkin. Proses kelahiran normal dibagi atas tiga stadia, yai- tu (a) Stadium persiapan; (b) Stadium pengeluaran fetus; (c) Stadium pengeluaran plasenta. Interval waktu dari ke- tiga stadia tersebut berbeda-beda antara tipe dan bangsa ternak dan antara individu dalam suatu bangsa ternak. Setelah ketiga stadia diatas selesai kemudian dilan- jutkan dengan tahap yang disebut puerperium. Puerperium adalah suatu perubahan-perubahan yang terjadi pada hewan induk setelah selesai melahirkan anak beserta plasentanya sampai hewan induk itu kembali masuk ke dalam siklus bera- hinya yang normal. Perubahan-perubahan yang penting dalam periode puerperium adalah regenerasi endometrium, involusi uterus dan berahi setelah kelahiran. Banyak teori yang mencoba menerangkan bagaimana kelahiran seekor anak hewan dimulai; mekanisme apa yang membuat inisiatif hingga urat daging uterus berkontrasi belum seca- ra pasti diketahui. Menurut Partodihardjo (1980) ada empat teori tentang mekanisme inisiasi kelahiran. Teori yang per tama ialah mekanisme stimulasi mekanik. Kedua, ialah meka- nisme hormonal. Ketiga, ialah mekanisme intern fetus. Ke- empat, ialah gabungan dari ketiga teori di atas….
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