1,720,958 research outputs found
Kombinasi Algoritma Triple DES dan Algoritma AES dalam Pengamanan File
No full textCryptography is a method to secure data sent from sender to recipient. Triple DES and AES are two symmetric algorithms commonly used in Automatic Teller Machine security and Blackberry Messenger. Since both of these are widely used in society, it is necessary to investigate whether there are weaknesses in the algorithms are and whether there are ways to cope. Key on Triple DES algorithm can be breached by using Differential Attack. For AES, Biclique Attack can reduce the complexity of key from 2128 to 2126.1 (Bogdanov et al, 2011). By combining the methods of Triple DES and AES will get a combined algorithm which is expected to address the weaknesses found in each of these methods.84 HalamanTesis Magiste
APLIKASI GAME BATTLE PUZZLE DENGAN METODE BEST FIRST SEARCH
No full textPerancangan aplikasi ini akan membuat suatu game berbentuk battle puzzle. Penelitian ini bertujuan untuk merancang konten sebuah game yang mendidik dan tetap bisa diterima oleh masyarakat, dimana penelitian ini menggunakan metode Best First Search serta menggunakan software microsoft visual basic.net 2008 dalam perancangannya. Metode Best First Search akan mencari ruang keadaan yang paling tepat untuk mencapai solusi permasalahan yang dapat diterima dan mempercepat proses kerjanya. Penelitian ini akan sangat bermanfaat bagi masyarakat khususnya anak-anak agar pengguna dapat meningkatkan pengetahuan dan wawasan serta menjadi bahan evaluasi intelligence penggun
Comparative Compression of Wavelet Haar Transformation with Discrete Wavelet Transform on Colored Image Compression
Get PDFIn this research, the algorithm used to compress images is using the haar wavelet transformation method and the discrete wavelet transform algorithm. The image compression based on Wavelet Wavelet transform uses a calculation system with decomposition with row direction and decomposition with column direction. While discrete wavelet transform-based image compression, the size of the compressed image produced will be more optimal because some information that is not so useful, not so felt, and not so seen by humans will be eliminated so that humans still assume that the data can still be used even though it is compressed. The data used are data taken directly, so the test results are obtained that digital image compression based on Wavelet Wavelet Transformation gets a compression ratio of 41%, while the discrete wavelet transform reaches 29.5%. Based on research problems regarding the efficiency of storage media, it can be concluded that the right algorithm to choose is the Haar Wavelet transformation algorithm. To improve compression results it is recommended to use wavelet transforms other than haar, such as daubechies, symlets, and so on
Comparative Compression of Wavelet Haar Transformation with Discrete Wavelet Transform on Colored Image Compression
Get PDFIn this research, the algorithm used to compress images is using the haar wavelet transformation method and the discrete wavelet transform algorithm. The image compression based on Wavelet Wavelet transform uses a calculation system with decomposition with row direction and decomposition with column direction. While discrete wavelet transform-based image compression, the size of the compressed image produced will be more optimal because some information that is not so useful, not so felt, and not so seen by humans will be eliminated so that humans still assume that the data can still be used even though it is compressed. The data used are data taken directly, so the test results are obtained that digital image compression based on Wavelet Wavelet Transformation gets a compression ratio of 41%, while the discrete wavelet transform reaches 29.5%. Based on research problems regarding the efficiency of storage media, it can be concluded that the right algorithm to choose is the Haar Wavelet transformation algorithm. To improve compression results it is recommended to use wavelet transforms other than haar, such as daubechies, symlets, and so on
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
PENGACAKAN CITRA DIGITAL DENGAN MENGGUNAKAN LOGISTIC MAP DAN PIECEWISE LINEAR CHAOTIC MAP
Get PDFTransfer file citra dapat dilakukan melalui jaringan internet yang tidak aman, sehingga citra pada bidang medis, penelitian, bisnis, militer dan bidang lainnya yang mengandung kerahasiaan membutuhkan proteksi. Pengacakan citra dapat dilakukan untuk mengamankan informasi yang terkandung pada citra digital.Metode chaotic map yang dapat digunakan untuk mengacak citra digital adalah Logistic Map dan Piecewise Linear Chaotic Map. Kedua metode chaotic map ini diketahui memiliki siklus yang besar dan memiliki distribusi keseragaman yang acak.Pengacakan citra dengan menggunakan kedua chaotic map ini adalah dengan mengacak nilai intensitas piksel citra menggunakan fungsi gerbang logika xor dan nilai acak yang dihasilkan oleh kedua metode chaotic map.Pengacakan dengan Logistic Map dengan menggunakan nilai parameter = 4 memperoleh hasil pengacakan citra paling baik secara visual dengan nilai MSE = 9496.75862, sedangkan pengacakan dengan Piecewise Linear Chaotic Map dengan menggunakan nilai parameter p = 0.5 memperoleh hasil pengacakan citra paling baik secara visual dengan nilai MSE = 9803.35705
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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