Judul: Pengetahuan dan Sikap Murid, Guru, Kepala Sekolah dan Orang Tua terhadap Konservasi Tumbuhan Obat di SDN Pengadilan 5 Bogor
Abstrak: At this time many people use medicinal plants as natural remedy. Excessive use of medicinal plants which was not accompanied by cultivation can cause scarcity. Low of knowledge and negative attitude could influence the conservation of medicinal plants. The research was carried out to obtain information about (1) the knowledge and attitude of students, teachers, principal and parents towards the conservation of medicinal plants, and (2) problems of the development of medicinal plant conservation in the school. The research was conducted in Pengadilan 5 Bogor Elementary School from September to October 2011. Data was collected through structured interview with interview guidelines and literature study. The resulting data was tabulated and descriptively analyzed. Respondents consisted of 120 students from 3rd to 6th grade classes, 9 teachers, 1 principal and 80 parents. The result showed that the meaning of medicinal plants was known by most student (73%), all teacher, principal and most parents (81%). Respondents knew the meaning of medicinal plants, examples of and how to use the medicinal plants from their experience and various sources of information, example books, internet and televition. Almost off respondents like to use medicinal plants, most of them agreed on the existence of medicinal plants at the school. Medicinal plant conservation problems in Pengadilan 5 Bogor Elementary School were limited area, the lack of applicable knowledge and quality of the teachers, lack of allocation and clear resources of funds, and the lack of optimal role of the school committee. The conclusion of this research was that’s the respondents knowledge of medicinal plants was very high and they had positive attitude toward the conservation of medicinal plants in the school. The main problem for conservation of medicinal plants in the school was limited area.
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Judul: Medicinal Plants’ Ex situ Conservation in Bogor Botanic Gardens
Abstrak: Bogor Botanic Gardens (Kebun Raya Bogor) has a long history of medicinal plant conservation. In order to improve the quality of the medicinal plant collections and their uses, Kebun Raya Bogor (KRB) needs to adopt relevant public and visitor expectations and manage key aspects of medicinal plant conservation and utilization. This study aims to establish a management strategy for the KRB medicinal plants collection. A set of questionnaires were used in this study. The data were processed using the Likert scale, set scoring method, and the AHP (analytic hierarchy process). The study suggested a total of 60 species to be given more attention. Of the 60 species assessed 9 species of which were prioritized, including Anaxagorea javanica, Coscinium fenestratum, Eusideroxylon zwageri, Heritiera littoralis, Kadsura scandens, Santalum album, Lunasia amara, Scorodocarpus borneensis, and Terminalia bellirica. Three basic conservation aspects (“tri-stimulus amar”) and the key KRB functions need to be strengthened and should be in line with the public expectations in order to achieve an integrated medicinal plant ex situ conservation.
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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