Judul: Analisis Keberterimaan Stakeholders terhadap Konsep Adaptive Ecotourism (Studi Kasus: Taman Nasional Bromo Tengger Semeru, Jawa Timur)
Abstrak: Taman Nasional Bromo Tengger Semeru (TNBTS) pada tahun 2020 mengalami penurunan jumlah kunjungan sampai mencapai 524.691 pengunjung akibat ditetapkannya pandemi Covid-19. Tujuan dari penelitian ini untuk mengidentifikasi keberterimaan serta peluang dan kendala dari stakeholders terhadap Konsep Adaptive Ecotourism serta menganalisis strategi pengembangan ekowisata adaptif di TNBTS. Data dikumpulkan melalui Focus Group Discussion dan wawancara secara virtual kepada para pihak. Data dianalisis menggunakan analisis deskriptif kualitatif dan analisis SWOT. Berdasarkan hasil keberterimaaan para pihak, pengembangan Konsep Adaptive Ecotourism di TNBTS diterima dengan baik, namun masih diperlukan persiapan lebih matang untuk memastikan implementasinya. Hasil analisis dapat disimpulkan bahwa keberterimaan para pihak terhadap pengembangan Konsep Adaptive Ecotourism di TNBTS dinyatakan positif serta Konsep Adaptive Ecotourism dapat dikembangkan di TNBTS dengan memanfaatkan kekuatan TNBTS sebagai faktor internal yang dipadukan untuk menangkap peluang yang ada (faktor eksternal).
Keyword: Pandemi Covid-19, adaptive ecotourism, acceptability, Analisis SWOT

Judul: Development Strategy of Adaptive Ecotourism Based on the Acceptance of Many Parties (Case study: Gunung Gede-Pangrango National Park)
Abstrak: Pandemi COVID-19 memberikan dampak pada jumlah kunjungan wisatawan dan penerimaan negara bukan pajak (PNBP) di Taman Nasional Gunung Gede-Pangrango. Oleh karena itu, dibutuhkan pengembangan wisata yang dapat beradaptasi dengan kondisi terkini melalui konsep Adaptive Ecotourism. Penelitian ini bertujuan untuk merumuskan strategi pengembangan ekowisata adaptif di TNGGP pada masa (pasca) pandemi COVID-19. Data dikumpulkan melalui Focus Group Discussion dan wawancara kepada para pihak model pentahelix, serta kuesioner yang diajukan kepada potential demand. Data dianalisis menggunakan analisis deskriptif kualitatif, analisis korelasi, dan analisis kekuatan, kelemahan, peluang, dan ancaman (SWOT). Hasil penelitian menunjukkan bahwa keberterimaan para pihak memberikan respon positif, termasuk dukungan serta persepsi dan preferensi potential demand dapat dikatakan baik. Strategi pengembangan ekowisata adaptif dapat diterapkan melalui perjanjian kerja sama dengan pihak lain dalam penyediaan sarana prasarana, koordinasi dengan para pihak mengenai perencanaan dan promosi, penyiapan objek wisata di kawasan sebagai objek visit/ekstensi dari objek atau destinasi lain.
Keyword: Acceptance of many parties, adaptive ecotourism, SWOT Analysis

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