20 research outputs found

    PENYISIPAN PESAN RAHASIA PADA CITRA GAMBAR DENGAN TEKNIK STEGANOGRAFI DAN ALGORITMA ASIMETRIS ENKRIPSI RIVEST SHAMIR ADLEMAN (RSA)

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    Steganografi adalah seni menyembunyikan informasi dan upaya untuk menyembunyikan keberadaan informasi yang disematkan. Steganografi berfungsi sebagai sebuah cara yang lebih baik untuk mengamankan pesan dari pada kriptografi, steganografi menyembunyikan isi pesan bukan mengacak pesan. Pesan asli disembunyikan di dalam citra gambar sedemikian rupa sehingga perubahan yang terjadi pada gambar tidak dapat diketahui perbedaannya dengan gambar tanpa pesan. Pada penelitian ini dikombinasikan algoritma RSA yang digunakan untuk mengenkripsi pesan rahasia dan teknik LSB digunakan untuk menyembunyikan pesan terenkripsi dengan tujuan untuk menghasilkan stego file yang lebih aman dan lebih baik secara kualitas. Berdasarkan hasil implementasi dan pengujian citra gambar yang dihasilkan sistem memiliki nilai diatas 40 dB sehingga kualitas citra gambar stego file memiliki kualitas yang baik

    NASA Tech Briefs, August 1992

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    Topics include: Electronic Components and Circuits; Electronic Systems; Physical Sciences; Materials; Computer Programs; Mechanics; Machinery; Fabrication Technology; Mathematics and Information Sciences; Life Sciences

    Law and Policy for the Quantum Age

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    Law and Policy for the Quantum Age is for readers interested in the political and business strategies underlying quantum sensing, computing, and communication. This work explains how these quantum technologies work, future national defense and legal landscapes for nations interested in strategic advantage, and paths to profit for companies

    19th Brazilian Logic Conference: Book of Abstracts

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    This is the book of abstracts of the 19th Brazilian Logic Conferences. The Brazilian Logic Conferences (EBL) is one of the most traditional logic conferences in South America. Organized by the Brazilian Logic Society (SBL), its main goal is to promote the dissemination of research in logic in a broad sense. It has been occurring since 1979, congregating logicians of different fields — mostly philosophy, mathematics and computer science — and with different backgrounds — from undergraduate students to senior researchers. The meeting is an important moment for the Brazilian and South American logical community to join together and discuss recent developments of the field. The areas of logic covered in the conference spread over foundations and philosophy of science, analytic philosophy, philosophy and history of logic, mathematics, computer science, informatics, linguistics and artificial intelligence. Previous editions of the EBL have been a great success, attracting researchers from all over Latin America and elsewhere. The 19th edition of EBL takes place from May 6-10, 2019, in the beautiful city of João Pessoa, at the northeast coast of Brazil. It is conjointly organized by Federal University of Paraíba (UFPB), whose main campus is located in João Pessoa, Federal University of Campina Grande (UFCG), whose main campus is located in the nearby city of Campina Grande (the second-largest city in Paraíba state) and SBL. It is sponsored by UFPB, UFCG, the Brazilian Council for Scientific and Technological Development (CNPq) and the State Ministry of Education, Science and Technology of Paraíba. It takes place at Hotel Luxxor Nord Tambaú, privileged located right in front Tambaú beach, one of João Pessoa’s most famous beaches

    Space station systems: A bibliography with indexes (supplement 6)

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    This bibliography lists 1,133 reports, articles, and other documents introduced into the NASA scientific and technical information system between July 1, 1987 and December 31, 1987. Its purpose is to provide helpful information to the researcher, manager, and designer in technology development and mission design according to system, interactive analysis and design, structural and thermal analysis and design, structural concepts and control systems, electronics, advanced materials, assembly concepts, propulsion, and solar power satellite systems. The coverage includes documents that define major systems and subsystems, servicing and support requirements, procedures and operations, and missions for the current and future Space Station

    NASA Tech Briefs, April 1993

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    Topics include: Optoelectronics; Electronic Components and Circuits; Electronic Systems; Physical Sciences; Materials; Computer Programs; Mechanics; Machinery; Fabrication Technology; Mathematics and Information Sciences; Life Sciences

    NASA Tech Briefs, January 1992

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    Topics include: New Product Ideas; Electronic Components and Circuits; Electronic Systems; Physical Sciences; Materials; Computer Programs; Mechanics; Machinery/Automation; Fabrication; Mathematics and Information Sciences; Life Sciences

    Recommender system performance evaluation and prediction: information retrieval perspective

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    Tesis doctoral inédita. Universidad Autónoma de Madrid, Escuela Politécnica Superior, octubre de 201
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