Judul: Analisis tingkat pemahaman tentang konservasi dalam kaitannya dengan pendidikan konservasi di Sekolah Dasar : Studi kasus di beberapa Sekolah Dasar Negeri Kecamatan Kaliwungu, Kabupaten Kendal
Abstrak: Menjaga sumberdaya alam adalah tanggung jawab semua manusia yang hidup dan bergantung pada bumi. Prinsip pemanfaatan sumberdaya yang dianggap paling tepat saat ini adalah pemanfaatan secara lestari yang dikenal dengan istilah konservasi. Kesadaran tentang konservasi dapat dan harus ditumbuhkan melalui pendidikan, baik di sekolah (formal) maupun di luar sekolah (non-formal). Kecamatan Kaliwungu merupakan salah satu kota yang sedang berkembang pesat, terutama guna mengimbangi perluasan kegiatan akibat pengaruh jalan utama Semarang- Jakarta. Terdesaknya lahan pertanian oleh industri dan pemukiman serta banjir di musim penghujan merupakan masalah-masalah yang harus dihadapi pemerintah dan masyarakat. Dengan demikian masyarakat perlu dipersiap- kan untuk menghadapi hal-hal tersebut. Oleh karena itu perlu upaya untuk mengetahui tingkat pengetahuan dan pemahaman masyarakat mengenai prinsip-prinsip konservasi serta pelaksanaannya dalam kehidupan sehari-hari, terutama pada masyarakat sekolah dasar, karena pendidikan dasar dipandang sebagai tahap dasar yang sangat penting bagi semua orang sebagai landasan pendidikan lebih lanjut sepanjang hidup (Ranaweera, 1989). Melalui pengenalan terhadap alam dan peranannya bagi kehidupan manusia dapat merangsang siswa untuk memiliki motivasi konservasi secara berantai dan meluas (Yatim, 1990).
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Judul: Pengetahuan, Sikap dan Perilaku Konservasi Hutan pada Siswa Sekolah Dasar di Sekitar Hutan Kawasan Gunung Salak Endah, Taman Nasional Gunung Halimun Salak
Abstrak: Gunung Halimun Salak National Park (GHSNP) is a conservation area that is experiencing conflict with people who lived around the Park in the area of Gunung Salak Endah (GSE). Conflicts had arisen because the people did not have awareness and knowledge of the importance of national parks for their livelihood. Knowledge, positive attitude and behavior towards the forest should be instilled in the community to resolve conflict and prevent further problems. Elementary school students, as young generation that will preserve the forest in the future, had great potential for the development of knowledge, positive attitude and behavior about forest conservation. When students were taught about forest conservation and encouraged to apply positive behavior toward forest, then the students would likely participate actively in forest conservation efforts. The purpose of this research was to identify the characteristics of sample schools; to measure students’ knowledge, attitude, and behavior in relation to forest conservation , and; to evaluate forest conservation education for elementary school students in the area of GSE, GHSNP. Four sample schools, namely SDN Gunung Bunder 03, SDN Gunung Bunder 04, SDN Gunung Picung 06 and SDN Gunung Sari 01, were selected using purposive sampling method based on criteria of proximity to the forest. Data were collected through direct observation, the distribution of questionnaires to students through questionnaires and structured interviews with teachers and principals through structured interviews with an interview guide. Students’ respondents were selected from the 5th grade students who had obtained forest conservation subjects in grade 4. The number of respondents was determined using a Slovin formula. Closed-form questions and statements were used in the questionnaire to measure students’ knowledge, attitude and behavior. Knowledge was measured using Thurstone scale, while attitude and behavior using Likert scale. In general, students from all four sample schools had average score of 10 – 20 on knowledge, 14 – 16 on attitude, and 9 – 11 on behavior. SDN Gunung Sari 01 had the largest percentage of respondents who obtained score in high category both for knowledge (46.2%) and attitude (30.8%), however the largest percentage of good behavior category was obtained by SDN Gunung Bunder 03 (41.2%). Respondents from SDN Gunung Sari 01 had also obtained the highest mean score of knowledge, attitude and behavior, but the mean score of behavior was only 0.1 point above the mean score of respondents from SDN Gunung Bunder 03. Better learning process occurred in SDN Gunung Sari 01 was assumed to have produce students with better achievement than the other sample schools. There were more subjects related to forest conservation taught in the school, supported by better infrastructure, more varying media, and more time allocation on lecture and practice. However, the students of SDN Gunung Bunder 03 had the advantage from the extracurricular activities that encouraged the students to familiarize 6 themselves to forest conservation related activities, which stimulated positive behavior. Therefore, learning about forest conservation should not only be given through curricular learning, but also supported by non-curricular learning, which provided students with opportunities to habituate themselves to the related learning subjects, so that students with
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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