Judul: Agrotourism Landscape Planning as an Agrotourism Support based on New Normal in Jambu Village Tourism Area, Kediri Regency East Java
Abstrak: Desa Wisata Jambu merupakan desa yang memiliki sektor pertanian yang menjadi sumber penghasilan utama bagi warganya. Desa Wisata Jambu menjadi salah satu desa yang terdampak akan pandemi COVID-19, sehingga menurunkan aktivitas wisatawan. Oleh karena itu, diperlukan perencanaan lanskap berbasis new normal terhadap wisata pendukung di Desa Wisata Jambu. Tujuan penelitian ini yaitu (1) mengidentifikasi karakteristik dengan memperhatikan aspek fisik dan biofisik, sosial budaya, potensi pengembangan agrowisata, dan new normal di Desa Wisata Jambu untuk pengembangan agrowisata, (2) menganalisis dan mensintesis potensi dan kedala pengembangan agrowisata Kawasan Desa Wisata Jambu, dan (3) menyusun landscape plan Desa Wisata Jambu sebagai kawasan agrowisata berbasis era new normal pandemi COVID-19. Metode yang digunakan yaitu dengan tahapan persiapan, invetarisasi, analisis, sintesis, dan perencanaan. Berdasarkan analisis wisata pendukung Spillane (1994), menunjukkan terdapat objek wisata yang dapat dijadikan wisata pendukung yaitu Kebun Bibit. Konsep pengembangan agrowisata yang digunakan yaitu dengan mengoptimalkan tanaman pertanian dan perkebunan lokal serta mengembangkan potensi sumberdaya alam secara optimal dan berkelanjutan. Selain itu, konsep wisata pendukung menyesuaikan dengan kondisi era new normal dengan menambahkan fasilitas new normal dan memperhatikan sirkulasi yang digunakan baik pengunjung atapun masyarakat Desa Jambu agar aktivitas pada setiap ruang dapat dibatasi. Hasil dari penelitian ini berupa rencana lanskap agrowisata Desa Wisata Jambu yang terbagi dalam ruang agrowisata yang meliputi ruang utama agrowisata, ruang pendukung agrowisata, ruang konservasi, ruang masyarakat, ruang penyangga dan ruang produksi., Jambu Tourism Village is a village that has an agricultural sector which is the main source of income for its citizens. Jambu Tourism Village is one of the villages affected by the COVID-19 pandemic, thereby reducing tourist activity. Therefore, it is necessary to plan a new normal-based landscape for supporting tourism in Jambu Tourism Village. The objectives of this study are (1) to identify the characteristics by taking into account the physical and biophysical, sociocultural aspects, the potential for agro-tourism development, and the new normal in the Jambu Tourism Village for agro-tourism development, (2) to analyze and synthesize the potential and constraints of agrotourism development in the Jambu Tourism Village Area, and (3) compiling a landscape plan for the Jambu Tourism Village as an agro-tourism area based on the new normal era of the COVID-19 pandemic. The method used is the stages of preparation, inventory, analysis, synthesis, and planning. Based on the analysis of supporting tourism, Spillane (1994) shows that there are tourist attractions that can be used as supporting tourism, namely the Nursery. The concept of agro-tourism development used is by optimizing crops and local plantations as well as developing the potential of natural resources optimally and sustainably. In addition, the idea of supporting tourism adapts to the conditions of the new normal era by adding new normal facilities and paying attention to the circulation used by both visitors and the people of Jambu Village. So that, activities in each space can be limited. The results of this study are Jambu Village agrotourism landscape plan which is divided into agrotourism area which includes the main agrotourism area, agrotourism support area, conservation area, community area, buffer, and production area.
Keyword: agrotourism, Jambu Village, new normal era, landscape planning, supporting tourism

Judul: Perencanaan Lanskap Wisata Pendukung Agrowisata Perkebunan Teh Gambung Desa Mekarsari Kabupaten Bandung Jawa Barat
Abstrak: Desa Mekarsari merupakan desa wisata yang berada di Kecamatan Pasirjambu, Kabupaten Bandung, dengan keunggulan yang cukup beragam seperti perkebunan dan peternakan. Namun Agrowisata Perkebunan Teh Gambung Desa Mekarsari kurang diketahui oleh masyarakat walaupun banyak potensi wisata yang dapat dikembangkan. Oleh sebab itu, diperlukan perencanaan lanskap wisata pendukung area agrowisata agar dapat membuat objek wisata yang ada tetap berkembang dengan baik tanpa merugikan wisata lainnya. Metode perencanaan dilakukan sesuai metode Gold (1980) yaitu tahap persiapan, inventarisasi, analisis, sintesis, dan perencanaan lanskap. Analisis dilakukan pada aspek biofisik, objek daya tarik wisata, akseptibilitas dan preferensi masyarakat, dan potensi objek dan atraksi wisata pendukung. Hasil analisis tersebut menghasilkan perencanaan lanskap yang terdiri dari rencana ruang, rencana sirkulasi, rencana aktivitas dan fasilitas, rencana wisata pendukung yang menunjukkan bahwa ketiga wisata pendukung mampu dijadikan objek pendukung untuk wisata utama, walaupun diperlukan pengembangan fasilitas keamanan dan kenyamanan di sekitar desa., Mekarsari Village is a tourist village located in Pasirjambu District, Bandung Regency, with various advantages such as plantations and livestock. However, the Gambung Tea Plantation Agrotourism in Mekarsari Village is less known by the public even though there is a lot of tourism potential that can be developed. Therefore, it is necessary to plan a tourism landscape that supports agro-tourism areas in order to make existing tourist attractions continue to develop properly without harming other tourism. The planning method is carried out according to the Gold (1980) method, namely the stages of preparation, inventory, analysis, synthesis, and landscape planning. The analysis was carried out on biophysical aspects, tourist attraction objects, community acceptability and preferences, and potential supporting tourist objects and attractions. The results of the analysis produce a landscape plan consisting of a spatial plan, circulation plan, activity and facility plan, a supporting tourism plan which shows that the three supporting tours can be used as supporting objects for the main tourism, although it is necessary to develop security and comfort facilities around the village.
Keyword: Agrotourism, Landscape planning, Supporting tourism

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