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Aproksimasi Distribusi Panas Dengan Menggunakan Metode Forward-Backward Difference
Get PDFAbstract
Distribution of heat occurs from a place that has a high temperature to elsewhere a low temperature. In a work process in industry revenue or expenditure necessary to achieve and maintain hot temperature conditions specified as needed. On the distribution of the one-dimensional heat conduction heat only propagate in a single direction, for example, only on-axis direction. Equation of one-dimensional conduction heat distribution modeled by the diffusion equation, which is a form of parabolic partial differential equations. Parabolic partial differential equations is one of the two order partial differential equations. Solution heat distribution equation can be determined by the analytical method called exact solution and numerical method called solution approximation. This research will be determined exact solution and the solution distribution approximation one-dimensional heat. Solution approximation using the method of forward difference and backward difference methods. After analysis turns backward difference method yield solutions a better approximation than the results approximating solution with forward difference method.
Keywords:
Keywords : heat distribution, exact solution, the solution approximation, forward method.
Abstrak
Distribusi panas terjadi dari suatu tempat yang memiliki temperatur tinggi ke tempat lain yang bertemperatur rendah. Pada suatu proses pekerjaan di bidang industri dibutuhkan pemasukan ataupun pengeluaran panas untuk mencapai dan mempertahankan keadaan suhu tertentu sesuai kebutuhan. Pada proses distribusi panas konduksi satu dimensi maka panas hanya merambat dalam satu arah, misalnya hanya pada arah sumbu - . Persamaan distribusi panas konduksi satu dimensi dimodelkan dengan persamaan difusi yang merupakan suatu bentuk persamaan diferensial parsial parabolik. Persamaan diferensial parsial parabolik adalah salah satu jenis persamaan diferensial parsial order dua. Solusi persamaan distribusi panas dapat ditentukan dengan metode analitik yang disebut solusi eksak dan metode numerik yang disebut solusi aproksimasi. Pada penelitian ini akan ditentukan solusi eksak dan solusi aproksimasi distribusi panas satu dimensi. Solusi aproksimasi dilakukan dengan menggunakan metode forward difference dan metode backward difference. Setelah dianalisa ternyata metode backward difference memberikan hasil solusi aproksimasi yang lebih baik dibandingkan dengan hasil solusi aproksimasi dengan metode forward difference.
Kata kunci : distribusi panas, solusi eksak, solusi aproksimasi, metode forward difference, metode backward difference
Aproksimasi Distribusi Panas Dengan Menggunakan Metode Forward-Backward Difference
Get PDFAbstract
Distribution of heat occurs from a place that has a high temperature to elsewhere a low temperature. In a work process in industry revenue or expenditure necessary to achieve and maintain hot temperature conditions specified as needed. On the distribution of the one-dimensional heat conduction heat only propagate in a single direction, for example, only on-axis direction. Equation of one-dimensional conduction heat distribution modeled by the diffusion equation, which is a form of parabolic partial differential equations. Parabolic partial differential equations is one of the two order partial differential equations. Solution heat distribution equation can be determined by the analytical method called exact solution and numerical method called solution approximation. This research will be determined exact solution and the solution distribution approximation one-dimensional heat. Solution approximation using the method of forward difference and backward difference methods. After analysis turns backward difference method yield solutions a better approximation than the results approximating solution with forward difference method.
Keywords:
Keywords : heat distribution, exact solution, the solution approximation, forward method.
Abstrak
Distribusi panas terjadi dari suatu tempat yang memiliki temperatur tinggi ke tempat lain yang bertemperatur rendah. Pada suatu proses pekerjaan di bidang industri dibutuhkan pemasukan ataupun pengeluaran panas untuk mencapai dan mempertahankan keadaan suhu tertentu sesuai kebutuhan. Pada proses distribusi panas konduksi satu dimensi maka panas hanya merambat dalam satu arah, misalnya hanya pada arah sumbu - . Persamaan distribusi panas konduksi satu dimensi dimodelkan dengan persamaan difusi yang merupakan suatu bentuk persamaan diferensial parsial parabolik. Persamaan diferensial parsial parabolik adalah salah satu jenis persamaan diferensial parsial order dua. Solusi persamaan distribusi panas dapat ditentukan dengan metode analitik yang disebut solusi eksak dan metode numerik yang disebut solusi aproksimasi. Pada penelitian ini akan ditentukan solusi eksak dan solusi aproksimasi distribusi panas satu dimensi. Solusi aproksimasi dilakukan dengan menggunakan metode forward difference dan metode backward difference. Setelah dianalisa ternyata metode backward difference memberikan hasil solusi aproksimasi yang lebih baik dibandingkan dengan hasil solusi aproksimasi dengan metode forward difference.
Kata kunci : distribusi panas, solusi eksak, solusi aproksimasi, metode forward difference, metode backward difference
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
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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