Judul: Studi potensi danpemanfaatan konyal Passiflora ligularis dai Taman Nasional Gunung Gede Pangrango Jawa Barat
Abstrak: Konyal (Passiflora ligularis) merupakan vegetasi exotic di kawasan Taman Nasional Gunung Gede Pangrango, khususnya di Resort Cibodas dan Resort Gunung Putri. Sumberdaya hutan ini kemudian dimanfaatkan untuk dijual sebagai sumber penghasilan tambahan oleh masyarakat sekitar Resort Cibodas, karena daerah ini merupakan daerah wisata. Masuknya masyarakat ke dalam hutan secara ilegal ini dikhawatirkan dapat merusak vegetasi dan ekosistem hutan, padahal taman nasional merupakan salah satu bentuk kawasan konservasi yang harus dijaga kelestariannya. Tujuan dari penelitian ini adalah untuk mengetahui potensi konyal dan komposisi jenis vegetasi di lokasi tumbuh konyal di dalam Resort Cibodas dan untuk mengetahui manfaat buah konyal bagi masyarakat sekitar kawasan tersebut sehingga pada akhirnya dapat dicarikan jalan keluar pola pemanfaatan konyal yang tidak mengganggu taman nasional yaitu antara lain dengan cara tindakan pembudidayaan konyal di daerah penyangga. Penelitian ini menggunakan cara analisis vegetasi untuk mengetahui kerapatan, frekwensi ditemukan konyal, derajat asosiasi konyal dengan jenis vegetasi lainnya, komposisi jenis vegetasi, dan keragaman jenis vegetasi. Sedangkan untuk mengetahui pemanfaatan konyal oleh masyarakat Desa Cimacan dilakukan pengamatan langsung, wawancara, dan studi literatur. Hasil analisis vegetasi seluas 2 hektar, tercatat 90 jenis vegetasi terdiri dari 34 famili, dan jenis yang mendominasi Altingia excelsa (INP pohon, Villebrunea rubescens (INP tiang, Ardisia fuliginosa (INP = 54,6%) untuk tingkat 58,5%) untuk tingkat 18,1%) untuk tingkat pancang, dan Villebrunea rubescens (INP = 22,4%) untuk tingkat anakan. Keanekaragaman jenis vegetasi relatif tinggi, dengan keanekaragaman jenis tertinggi pada vegetasi tingkat pancang yaitu 3,72. Nilai kerapatan dan frekwensi ditemukan konyal tinggi yaitu 187 individu per hektar dan frekwensinya 84%. Derajat asosiasi konyal dengan vegetasi jenis lain berkisar -1,0 sampai 0,2….dst
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Judul: Studi Etnobotani Tumbuhan Eksotik di Desa Penyangga Resort Bodogol, Taman Nasional Gunung Gede Pangrango
Abstrak: Taman Nasional Gunung Gede Pangrango menjadi salah satu kawasan konservasi yang menghadapi permasalahan adanya keberadaan tumbuhan eksotik yang mengancam kelestarian ekosistem. Namun di sisi lain masyarakat di sekitar kawasan secara turun temurun sudah memanfaatkan spesies eksotik tersebut. Tujuan penelitian ini yaitu mendokumentasikan pengetahuan etnobotani dan mengidentifikasi spesies tumbuhan eksotik yang memiliki nilai budaya penting bagi masyarakat di desa penyangga Resort Bodogol. Kegiatan penelitian dilaksanakan pada November 2022 - Januari 2023 di Kampung Babakan Kencana, Desa Benda, Kecamatan Cicurug, Kabupaten Sukabumi, Jawa Barat. Penelitian ini menggunakan metode studi pustaka, observasi lapang, dan wawancara. Analisis data menggunakan metode ICS, UV dan ICI. Terdapat 60 spesies tumbuhan eksotik dari 26 famili yang dimanfaatkan dengan kegunaan tertinggi sebagai tumbuhan obat. Spesies eksotik yang memiliki nilai budaya penting diantaranya yaitu; M. eminii, C. hirta, O. barrelieri, S. torvum, A. inulifolium, dan C. calothyrsus. Penelitian ini diharapkan dapat menjadi salah satu pertimbangan dalam mendukung keberhasilan pengelolaan spesies eksotik di kawasan TNGGP melalui pendekatan sosial budaya masyarakat dalam pemanfaatan spesies eksotik., Gunung Gede Pangrango National Park is one of the conservation areas that faces the problem of the existence of exotic plants that threaten the sustainability of the ecosystem. But on the other hand, the people around the area have been using these exotic species for generations. The purpose of this study was to document ethnobotanical knowledge and identify exotic plant species that have important cultural alues for the buffer village communities around Bodogol Resort. Research activities were carried out in November 2022 - Januari 2023 in Babakan Kencana Village, Benda Village, Cicurug District, Sukabumi Regency, West Java. This study used the method of literature study, field observation, and interviews. Data analysis using ICS, UV and ICI methods. There are 60 species of exotic plants from 26 families which are utilized with the highest use as medicinal plants. Exotic species that have important cultural values include; M. eminii, C. hirta, O. barrelieri, S. torvum, A. inulifolium, and C. calothyrsus. This research is expected to be one of the considerations in supporting the successful management of exotic species in the TNGGP area through a socio-cultural approach to the community in the utilization of exotic species.
Keyword: tumbuhan eksotik, sosial budaya, TNGGP

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