1,720,960 research outputs found
Modifikasi Garis Singgung Untuk Mempercepat Iterasi Pada Metode Newton Raphson
Get PDFThe Newton-Raphson method is one of the methods to find solutions or roots of nonlinear equations. This method converges faster than other methods and is more effective in finding doubles. In this study, it will be shown that the Newton-Raphson modification uses modifications to the tangent equation. The results show that for every nth iteration, the speed difference of Newton Raphson modification is __. Furthermore, the convergence of Newton Raphson is __, and for Newton Raphson modification is __
Analisis Faktor yang Mempengaruhi Indeks Prestasi dengan Metode Regresi Logistik Biner
Get PDFPenelitian ini dilakukan mengetahui faktor-faktor yang mempengaruhi indeks prestasi mahasiswa tersebut. Ada beberapa faktor yang diduga mempengaruhi indeks prestasi (IP) mahasiswa. Sampel penelitian adalah mahasiswa program studi Sistem Informasi STMIK Atma Luhur yaitu sebanyak 109 mahasiswa. Teknik sampling yang digunakan pada penelitian ini adalah Cluster sampling yaitu teknik pengambilan sampel yang dilakukan berdasar kelompok tertentu. Teknik analisis data menggunakan analisis deskriptif dan analisis Regresi Logistik Biner dengan prosedur Backward Stepwise yaitu mengamati tingkat pendidikan orang tua, biaya hidup, status pekerjaan, status tempat tinggal, jumlah saudara, jenis kelamin, dan lama belajar. Hasil penelitian menunjukkan bahwa terdapat 3 faktor yang signifikan terhadap IP mahasiswa yaitu pendidikan ibu, status pekerjaan mahasiswa dan lama belajar.
Proving The Fermat Last Theorem for Case q≤n
Get PDFFermat's Last Theorem is a well-known classical theorem in mathematics. Andrew Willes has proven this theorem using the modular elliptic curve. However, the proposed proof is difficult for mathematicians and researchers to understand. For this reason, in this study, we provide evidence of several properties of Fermat's Last Theorem with a simple concept. We use Newton's Binomial Theorem, well-known in Fermat's time. In this study, we prove Fermat's Last Theorem for case . We also use the Newton’s Binomial theorem to verify several cases .
Digital signature scheme with matrix-based approach
No full textThe use of digital signatures in various electronic services such as e-transactions, e-commerce, and e-learning is necessary for today's humans. All types of these services are highly dependent on the privacy, integrity, and authenticity between the sender and recipient of the data. Mathematically, many digital signature schemes such as Rivest Shamir Adleman (RSA), Elgamal, and Elliptic Curve Cryptography (ECC) are made using the concept of integer multiplication. Previous research introduced the RSA signature with a square matrix that changes data as a matrix instead of integers. The security of the scheme depends on the matrix with order . The larger the digit chosen, the better the level of protection. This modification makes this digital signature system more secure than systems using integers because the randomization process is more random and complicated. However, the operating system involves matrix exponentiation, requiring a lot of computing time and space. In this study, researchers changed the matrix exponentiation to ordinary matrix multiplication. The advantage is that the proposed algorithm has a faster computing speed because it only involves ordinary matrix multiplication. In the first step, the researcher forms several rectangular matrices as random variables for the key generation algorithm. Next, the researcher models the signing and signature verification algorithms. After that, the researcher codes in Mathematica and simulates the proposed signature scheme. In the final stage, the researcher performs a mathematical attack test analysis on the algorithm. The results show that the proposed scheme can generate keys and sign and verify signatures well. In addition, the proposed scheme system has also been tested for possible mathematical attacks
PENERAPAN MATRIKS PERSEGI PANJANG SEBAGAI KUNCI PUBLIK DAN KUNCI PRIVAT PADA MODIFIKASI CIPHER HILL
Get PDFMatriks nonsingular memiliki peranan penting dalam kehidupan. Sedangkan, penerapan matriks persegi panjang masih belum banyak ditemukan. Salah satu penerapan matriks nonsingular dalam kriftografi adalah Cipher Hill. Cipher Hill menggunakan kunci bersifat simetris. Selain itu, pada kriftografi dikenal juga kunci asimetris yang diklaim lebih aman dari pada kunci simetris. Pada makalah ini diperkenalkan modifikasi Cipher Hill menggunakan kunci asimetris. Kunci-kunci asimetris dibentuk dari matriks-matriks persegi panjang
Pengelolaan Arsip Secara Digital Menggunakan Algoritma LZSS Modifikasi untuk Kompresi File
Get PDFDokumen yang menumpuk dalam bentuk hardcopy dapat menimbulkan suatu masalah, baik dalam penataan, keamanan dokumen maupun ruang penyimpanan dokumen. Selain itu perawatan ekstra diperlukan untuk mencegah kerusakan pada dokumen penting yang disebabkan oleh serangga dan lain-lain. Dengan teknologi sekarang ini dokumen dapat disimpan dalam bentuk file dan sekaligus ukuran file dapat diperkecil untuk meminimalkan media penyimpanan dan penyusunan dokumen dapat ditata dengan baik sehingga pada saat pencarian dokumen menjadi lebih mudah. File merupakan data digital yang berisi informasi. Untuk memperkecil ukuran file yaitu dengan cara dipadatkan atau biasa disebut dengan kompresi sehingga ukuran file menjadi lebih kecil dari ukuran semula. Pada penelitian ini, metode yang digunakan untuk kompres file adalah LZSS (Lempel Ziv Strorer-Szymanski) yang telah dimodifikasi untuk menghasilkan kompres yang lebih optimal. Algoritma kompresi LZSS modifikasi dikembangkan berdasarkan konsep algoritma kompresi LZSS (pengkodean (offset,len)) serta penambahan pengkodean (offset,-len). Dari 9 sampel file yang dipilih sebagai data simulasi, diperoleh rata-rata rasio kompresi algoritma LZSS adalah 75,40% dan rata-rata kompresi algoritma LZSS modifikasi adalah 67,86%. Hal ini menunjukkan bahwa algoritman LZSS modifikasi menghasilkan tingkat kompresi yang lebih baik
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
- …
