Judul: Karakterisasi Morfologi dan Anatomi Tanaman Jambu Air di Mekarsari Bogor, Jawa Barat
Abstrak: Jambu air merupakan salah satu komoditas buah yang telah banyak dibudidayakan karena mempunyai kemampuan adaptasi dan toleransi yang tinggi terhadap semua jenis tanah. Karakter lengkap tanaman tersebut masih belum diketahui. Tujuan penelitian ini adalah menguraikan karakter dan melengkapi data karakterisasi morfologi tanaman jambu air di Taman Buah Mekarsari. Metode yang dilakukan yaitu pengamatan karakter morfologi, pengamatan data sekunder tanaman, dan pengamatan karakter anatomi sayatan paradermal abaksial dan adaksial daun dengan metode whole mount. Karakterisasi morfologi dari beberapa varietas jambu air menunjukkan banyak keunikan berdasarkan karakter generatif, seperti bunga dan buah. Perbedaan karakter vegetatif, seperti batang dan daun, lebih sedikit dibandingkan karakter generatif. Perbedaan karakter morfologi disebabkan oleh faktor genetik dan lingkungan. Karakterisasi anatomi daun Varietas Citra menunjukkan bahwa terdapat banyak stomata pada sisi abaksial daun, namun tidak terdapat stomata pada sisi adaksial daun. Trikoma pada kedua sisi adaksial dan abaksial daun tidak ditemukan pada Varietas Citra.
Keyword: karakter generatif, karakter vegetatif, stomata, Varietas Citra

Judul: Karakterisasi Morfologi dan Anatomi Tanaman Jambu Biji (Psidium guajava L.) di Taman Buah Mekarsari Bogor
Abstrak: Jambu biji merupakan salah satu komoditas buah di Indonesia yang kaya akan manfaat. Terdapat lima varietas jambu biji di Taman Buah Mekarsari. Karakterisasi perlu dilakukan terhadap tanaman jambu biji sebagai upaya pelestarian tanaman dan juga sebagai informasi karakter atau data referensi pengetahuan. Penelitian ini dilakukan untuk mempelajari serta melengkapi data karakterisasi morfologi dan anatomi tanaman jambu biji di Taman Buah Mekarsari. Metode yang dilakukan yaitu penentuan dan pengambilan sampel, pengamatan karakter morfologi dan anatomi, serta pengamatan data sekunder tanaman. Karakter morfologi dari beberapa varietas menunjukkan ciri yang berbeda, terutama pada daun dan buah. Karakter anatomi dari lima varietas menunjukkan hasil yang sama pada stomata dengan tipe anomositik dan dua trikoma tipe berkelenjar, yaitu: uniseriat dan multiseriat
Keyword: anatomi, jambu biji (Psidium guajava L.), karakterisasi, morfologi

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