Judul: Kesuburan Sapi Perah Mengikuti Penyuntikan Norgestoment Dan Estradiol Valerate (Syncro-Mate B) (Studi Kasus di Kabupaten Sukabumi -Jawa Barat)
Abstrak: Masalah usaha peternakan sapi (perah, potong) semakin banyak dibicarakan berbagai pihak terutama pemerintah dalam kaitannya dengan uoaya menunjang program perbaikan gizi masyarakat yang berasal dari susu maupun daging. salah satu aspek cukup penting yang turut menunjang pelipat gandaan jumlah maupun mutu genetik ternak adalah bidang reproduksi. Banyak hal ini yang terkait dan saling memberikan manfaat untuk dapat merealisasikan pengembangan usaha ternak sapi.
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Judul: Studi kasus tentang gangguan reproduksi pada sapi perah di KUD Makmur, Kecamatan Sukabumi, Kabupaten Dati II Sukabumi Propinsi Jawa Barat
Abstrak: Sejarah perkembangan sapi perah di Kecamatan Sukabumi telah dimulai sejak zaman Belanda. Pada tahun 1980 baru dilakukan introduksi sapi perah import yang berasal dari bantuan kredit Menteri Koperasi. Tahap I yaitu pada tanggal 13- Januari 1980 mendapat jatah 100 ekor, kemudian menyusul pada tanggal 27 Januari 1981 sebanyak 100 ekor, dan tahap III datang lagi 100 ekor pada tanggal 8 Oktober 1982. Melalui Program Pengembangan Usaha Sapi Perah (PUSP) dikirim 100 ekor lagi pada tanggal 31 Maret 1983. Perkembangan populasi sampai dengan bulan Januari 1989 tinggal 360 ekor yang dimi liki oleh 41 orang peternak. Perkawinan sapi perah seluruh- nya memanfaatkan teknologi inseminasi buatan. Pengetahuan peternak tentang pengelolaan peternakan sapi perah diperoleh dari kursus kilat menjelang saat akan menerima paket kredit, dari tetangga atau teman yang telah lebih dahulu beternak. Akibat kurangnya pengetahuan ini berpengaruh terhadap sikap dalam mengelola peternakannya. Teta- pi KUD Makmur terus berupaya memperbaiki kondisi ini menuju kearah yang lebih baik. Gangguan reproduksi yang sering timbul pada peternakan sapi perah di KUD Makmur Kecamatan Sukabumi adalah gangguan fungsional berupa Corpus Luteum Persisten (CLP), Hypofungsi Ovari dan Siste Ovari, serta komplikasi kelahiran yakni abortus dan Retensio Secundinae. Faktor predisposisi timbulnya gangguan reproduksi adalah kurangnya menjaga kebersihan pada ternak maupun perkandangannya, serta petugas saat eksplorasi rectal. melakukan Angka Service per Conception (S/C) rata-rata 2,96 dimana angka ini masih diatas normal yaitu 1,6 2,0. Sedangkan Cunception Rate (CR) juga masih rendah yaitu 30 prosen, jika dibanding angka normalnya sebesar 60 prosen. Tingginya nilai S/C dan rendahnya CR ini dapat disebabkan oleh beberapa faktor antara lain kesuburan betina, kesuburan semen dan teknik inseminasi…dst
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Judul: Algorithm construction of HLI hash function
Abstrak: Cryptography is a study of mathematical techniques related to aspects of information security regarding on confidentiality, data integrity, entity authentication, and data origin authentication. Data integrity is a service, which is associated with the conversion of data carried out by unauthorized parties. To maintain data integrity, one can use hash functions. An hash function is a computationally efficient function to map an arbitrary length bitstring to a fixed length bitstring called as hash value. The use of hash function in maintaining the information integrity and authentication is in digital signatures, virus protection, and software distribution. Illustration of the hash function in the integrity and authentication of information that is emailed as follow. The sender sends the information and hash value to the recipient. If the hash value of the information is equal to the hash value that is sent by the sender, then information has not been changed. Otherwise the information has been changed. An hash function has two properties, one way and collision resistance. An hash function is called one way if it is computationally infeasible to find any input such that when given any hash value . Meanwhile an hash function is called collision resistant if it is computationally infeasible to find any two inputs where such that . The purpose of this study is to construct a HLI hash function algorithm, to analyze the speed and security of the hash functions as a results of construction. Furthermore, it is to compare it with SWIFFT. Hash function is constructed based on the result of algebraic operations on modular polynomial ringwith . Modular polynomial ring noted as is a set of all polynomials of degree at most with coefficients in . can be represented as a set of integer vector of modulo in dimension . So, it is simple to implement in a computer. In vector operations, is lattice . Furthermore, alattice that is defined from certain polynomial ring is called ideal lattice. HLI hash function is consists of addition and multiplication algorithm in the ring. Addition algorithm consists of sumation operations of modulo and multiplication consists of multiplication operations of modulo . Generally, algorithm of HLI hash function consists of multiplication operations of modulo and addition operations of modulo . However, if the input is binary number then multiplication algorithm only consists of multiplication operation of modulo , so algorithm of HLI hash function consists of multiplication operations of modulo and addtion operations of modulo . An hash function is secured if it has two properties, i.e., one way and collision resistance. HLI hash function hash is one way, it is following the proof of Micciancio. It is has collision resistant because of polynomial is irreducible over and monic. Moreover, it is proved that for every unit vector , the vector is small vector. If the input of hash function is a binary number then HLI hash function only involves addition operations of modulo . So the time that used almost same with SWIFFT. The excellence of HLI hash function is the key size smaller than SWIFFT. This effect on
Keyword: hash function, modular polynomial ring, lattice