Judul: Action Plan for Community Based Mangrove Tourism in Pasar Banggi Rembang Regency
Abstrak: Rencana aksi diperlukan untuk mengelola ekowisata ekosistem mangrove di Pasar Banggi yang memiliki potensi mangrove yang tinggi guna meningkatkan kesejahteraan masyarakat. Penelitian ini bertujuan membuat rencana aksi pengembangan wisata mangrove yang berbasis masyarakat di Desa Pasar Banggi Kabupaten Rembang. Penelitian lapang dilakukan selama bulan Febaruari 2021 sampai Mei 2021 dilanjutkan bulan Desember 2022. Hasilnya, nilai kerapatan mangrove tertinggi sebesar 9767 ind/ha, jumlah tegakan berbeda disetiap stasiun Berdasarkan Indeks kesesuaian ekologi, kawasan wisata mangrove pasar banggi termasuk kategori sesuai. Daya dukung kawasan ekowisata mangrove Pasar Banggi sebanyak 46 orang perhari, sedangkan jumlah kunjungan rata rata saat ini masih 40 orang perhari. Rencana aksi berbasis masyarakat yang diajukan adalah: penambahan tempat parkir, sentra kuliner, menara pemantau, plantasi mangrove, penambahan akses jalan menuju tempat wisata, dan penambahan pembatas jembatan., An action plan is needed to manage mangrove ecosystem ecotourism in Banggi Market which has high mangrove potential to improve people's welfare. This study aims to create an action plan for the development of community-based mangrove tourism in Pasar Banggi Village, Rembang Regency. Field research was conducted from February 2021 to May 2021 followed by December 2022. As a result, the highest mangrove density value was 9767 ind/ha, the number of stands was different at each station. Based on the ecological suitability index, the Pasar Banggi mangrove tourism area is in the appropriate category. The carrying capacity of the Pasar Banggi mangrove ecotourism area is 46 people per day, while the average number of visits is currently still 40 people per day. The proposed community-based action plans are: additional parking lots, culinary centers, monitoring towers, mangrove planting, additional access roads to tourist attractions, and additional bridge barriers.
Keyword: tourism suitability, potential, action plan, carrying capacity

Judul: Konsep Pengembangan Ekowisata Berbasis Masyarakat Di Desa Pasar Banggi, Kabupaten Rembang
Abstrak: Kabupaten Rembang merupakan salah satu kabupaten yang berada di pesisir Utara Jawa Tengah yang mempunyai potensi kawasan rekreasi pantai. Salah satu potensi kawasan rekreasi pantai di Kabupaten Rembang adalah kawasan rehabilitasi mangrove. Ekosistem mangrove di Kabupaten Rembang dapat ditemui salah satunya di Desa Pasar Banggi, Kecamatan Rembang. Pada tahun 2014, kawasan konservasi hutan mangrove Pasar Banggi mendapat perhatian besar dari pemerintah sebagai objek wisata mangrove dengan pembangunan beberapa fasilitas wisata. Namun, aktivitas wisata tersebut saat ini kurang melibatkan partisipasi masyarakat sehingga menimbulkan kerusakan pada ekosistem mangrove. Oleh karena itu, dibutuhkan konsep pengembangan ekowisata hutan mangrove berbasis masyarakat di Desa Pasar Banggi sebagai alternatif pemecahan masalah. Tujuan dari penelitian ini antara lain: 1) mengevaluasi hutan mangrove Desa Pasar Banggi melalui analisis kelayakan ekowisata, 2) mengidentifikasi kesiapan masyarakat Desa Pasar Banggi dalam pengembangan ekowisata hutan mangrove, dan 3) menyusun konsep pengembangan ekowisata mangrove berbasis masyarakat di kawasan Hutan Mangrove Pasar Banggi sebagai bahan rekomendasi untuk pemerintah Kabupaten Rembang. Penelitian dilakukan dari bulan Februari sampai Mei 2015. Hasil penelitian menunjukkan bahwa kawasan mangrove di Desa Pasar Banggi layak untuk menjadi kawasan ekowisata, penilaian SBE menunjukkan bahwa kawasan mangrove Desa Pasar Banggi memiliki banyak lanskap dengan estetika tinggi. Masyarakat Desa Pasar Banggi memiliki nilai kesiapan yang baik dalam mendukung pengembangan ekowisata. Diperlukan beberapa pelatihan untuk masyarakat lokal dalam mendukung program ekowisata mangrove berbasis masyarakat dalam kaitannya bentuk kerjasama dengan pemangku kebijakan. Selain itu, program wisata pendidikan dan penerapan kebijakan sangat diperlukan dalam menjaga keberlangsungan kawasan mangrove.
Keyword: Berbasis masyarakat, ekosistem mangrove, ekowisata, konsep pembangunan

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