Judul: Pengaruh Ekowisata Berbasis Masyarakat terhadap Perubahan Kondisi Ekologi, Sosial dan Ekonomi di Kampung Batusuhunan, Sukabumi
Abstrak: Ecotourism is responsible travel journey towards environmental sustainability and well being of local communities. Active role in managing ecotourism potential is important because people have the knowledge of nature and culture potential sale value as ecotourism attraction. The development of community managed ecotourism affects the ecological, social, and economic communities. The purpose of this study was to analyze the influence of community based ecotourism in village Batusuhunan to changing ecological, social, and economic community. The results showed that the presence of community based ecotourism Batusuhunan give change for the community especially in the ecological and social aspects. On ecological aspect, the population has had the awareness to protect the environment by disposing of waste in place and environmentally friendly lifestyle. In the social aspect, ecotourism increase cooperation of community especially in the field ecotourism. Social activities in the community often held in line with the development of ecotourism. On the economic, employment opportunities derived from ecotourism sector could be extra income for the family. However, changes in the standard of living can not be perceived by the Batusuhunan community because ecotourism development has just started and has been running for about 3 years.
Keyword: Community Based Ecotourism, ecological, social, economic

Judul: Persepsi Masyarakat terhadap Pengembangan Kawasan Ekowisata Islami Curug Cigangsa (Kasus: Kampung Batusuhunan, Kelurahan Surade, Kabupaten Sukabumi, Provinsi Jawa Barat)
Abstrak: Eco-tourism as one of tourism activity, that attracts attention from many participant. As a tourism activity, eco-tourism not only offering a beauty of nature but also the unique of social and cultural in some community. The research explained about the local community perception towards eco-tourism development. The research is conducted in Kampung Batusuhunan, Kelurahan Surade, Kabupaten Sukabumi, Provinsi Jawa Barat. The purposes of this research are 1) to analyze level of knowledge and attitude towards myth’s and norm in Kampung Batusuhunan. That may support to protect the community from any devastating effect from tourism, 2) to analyze the local community perception in the development of “Waterfall Cigangsa Islamic Eco-tourism” area, 3) to analyze people expectations about ”Waterfall Cigangsa Islamic Eco-tourism” development. The methodology of research is based on qualitative and quantitative approaches. A quantitative data are earned from the questionnaire, while the qualitative data are earned from the open question. The results of this research showed 1) characteristic of respondent unrelated to level of knowledge and attitude towards myth’s and norm in Kampung Batusuhunan because on the best of age and sex the local people have a high level of knowledge and a firm attitudes to against the norm and myth’s, 2) the result also proved, some respondent approved to the Islamic Eco-tourism development at Kampung Batusuhunan because this idea may prevent negative effect from the ecotourism development, 3) people expectations about “Waterfall Cigangsa Islamic Ecotourism” development mainly in economic sector because the respondents want an economic progress for the local people and Kampung Batusuhunan
Keyword: 

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