Judul: Organogenesis dan embriogenesis  tanaman nerium oleander secara In vitro
Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi BAP dan IBA serta tipe eksplan pada perbanaykan organogenesis dan pengaruh konsentrasi 2,4 D serta tipe eksplan pada perbanyakan embriogenesis serta menentukan teknik mana yang lebih efisien antara organogenesis dengan embriogenesis. Eksplan yang dipakai berupa bagian kecambah Nerium oleander berumur 15 hari untuk kotiledon, berumur 30 hari untuk tunas ujung dan biji (tanpa dikecambahkan terlebih dahulu).
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Judul: Pengaruh 2,4-D dan BAP terhadap Organogenesis Anthurium vittariifolium secara In Vitro
Abstrak: Anthurium vittariifolium merupakan tanaman hias pot yang belum banyak dikenal dan dipelajari sehingga perlu dilakukan perbanyakan secara in vitro untuk dapat diproduksi secara massal. Penelitian ini bertujuan mempelajari pengaruh 2,4-D dan BAP serta interaksinya terhadap organogenesis A. vittariifolium secara in vitro. Penelitian dilaksanakan pada bulan November 2022 sampai April 2023 di Laboratorium Kultur Jaringan 3, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor. Penelitian ini menggunakan Rancangan Kelompok Lengkap Teracak dua faktor. Faktor pertama yaitu auksin 2,4-D (0; 0,3; dan 0,6 mg L-1). Faktor kedua yaitu sitokinin BAP (0; 1; 2; dan 3 mg L-1). Terdapat 12 perlakuan dengan 5 ulangan sehingga diperoleh 60 satuan percobaan. Hasil penelitian menunjukkan perlakuan 2,4-D secara tunggal memberikan pengaruh nyata terhadap persentase eksplan membentuk kalus. Perlakuan BAP secara tunggal memberikan pengaruh nyata hingga sangat nyata terhadap persentase kalus beregenerasi membentuk tunas. Interaksi 2,4-D dengan BAP memberikan pengaruh nyata hingga sangat nyata pada eksplan membentuk kalus dan jumlah tunas. Tunas terbanyak dihasilkan dari media yang diperkaya BAP 1 mg L-1 yang berinteraksi dengan pemberian 2,4-D 0 dan 0,6 mg L-1 yang menghasilkan 10 tunas walaupun tidak berbeda nyata dengan beberapa perlakuan lainnya., Anthurium vittariifolium is a cut flower that is not widely known and studied, hence in vitro propagation is necessary for mass production. This study aims to investigate the effects of 2,4-D and BAP and their interactions on the organogenesis of A. vittariifolium in vitro. The research was conducted from November 2022 to April 2023 at the Tissue Culture Laboratory 3, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University. This study used a Completely Randomized Block Design with two factors. The first factor was the auxin 2,4-D (0; 0.3; and 0.6 mg L-1). The second factor was the cytokinin BAP (0; 1; 2; and 3 mg L-1). There were 12 treatments with 5 replications, resulting in a total of 60 experimental units. The results showed that the single treatment of 2,4-D had a significant effect on the percentage of explants inducing callus. The single treatment of BAP had a significant effect on the percentage of regenerating callus-forming shoots. The interaction between 2,4-D and BAP had a significant to highly significant effect on the percentage of explants inducing callus and the number of shoots. The majority of callus colors formed were white, yellow, light green, green, and dark green, with 100% compact callus formation. The highest number of shoots resulted from media enriched with BAP 1 mg L-1 which interacted with 2,4-D 0 and 0.6 mg L-1 which produced 10 shoots although not significantly different from some of the other treatments.
Keyword: auxin, regenerating callus, somatic embryo

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