1,720,956 research outputs found
PROGRAM KOMPUTER UNTUK ANALISIS DISTRIBUSI SUHU YANG DIOPERASIKAN DENGAN WINDOWS
Full text linkABSTRAKPROGRAM KOMPUTER UNTUK ANALISIS DISTRIBUSI SUHU YANG DIOPERASIKAN DENGAN WINDOWS.. Saat ini di P2PN telah berhasil dikembangkan empat buah program berbasis elemen hingga untuk komputasi teknik, satu diantaranya adalah untuk analisis distribusi suhu. Tetapi keempat program ini masih dioperasikan dengan DOS.. Kelemahan program yang masih dioperasikan dengan DOS adalah tampilan yang kurang menarik, sedang untuk dapat dipasarkan tampilan program harus cukup menarik. Penelitian ini bertujuan mengembangkan program komputer yang masih dioperasikan dengan DOS ke dalam program komputer yang dioperasikan dengan WINDOWS. Alih bahasa dilakukan dengan Visual Basic 5.0 secara bertingkat agar proses debugging mudah dilakukan..Hal pokok yang masih dipertahankan adalah sedikit mungkin mengoperasikan hardisk selama proses analisis. ABSTRACT COMPUTER PROGRAMME FOR TEMPERATURE DISTRIBUTION ANALYSIS OPERATED UNDER WINDOWS. Four programmes for engineering computation base on finite element have been developed successfully in P2PN.. One of the programmes is for temperature distribution analysis. Unfortunately the programmes is still runned under DOS. The weakness of the programme run under DOS is bad presentation, and meanwhile for marketing need interesting presentation. The purpose of this reseercn is developing the present programme running under DOS into programme running under WINDOWS. The translation is done by Visual Basic 5.0 step by step so the debugging is done easily.. The main feature kept during translation is to minimize hardisk operation
PENENTUAN EFISIENSI TERMAL PLTN DENGAN ALGORITMA YANG DAPAT DIOLAH KOMPUTER
Full text linkABSTRAKPENENTUAN EFISIENSI TERMAL PLTN DENGAN ALGORITMA YANG DAPAT DIOLAH KOMPUTER. Efisiensi PLTN merupakan parameter yang penting untuk menentukan harga I istrik yang dibangkitkan.. Untuk itu efisiensi tennal PLTN akan ditentukan dengan algoritma yang dapat diolah komputer. Dalam rnakalah ini akan ditinjau efisiensi PLTN dengan siklus Rankine uap jenuh. Algoritma didasarkan pada pembacaan data uap, inter-polasi, pemilihan harga empirik Salisbury dan penampilan grafik.. Harga yang diolah meliputi tekanan, suhu, entalpi, entropi dan volume jenis uap. Pengolahan komputer menqqunakan bahasa pemrograman BASIC dengan kompiler Power BASIC 3.0. Hasil ditampilkan dalam bentuk grafik, baik grafik suhu vs entropi maupun diagram balok. Dari grafik suhu vs entropi yang dihasilkan pengaruh tekanan uap dan banyaknya tingkat regenerasi dengan mudah dapat diketahui
PROGRAM KOMPUTER UNTUK MENENTUKAN AKTIVITAS RELATIV PADA TLA
Full text linkABSTRAKPROGRAM KOMPUTER UNTUK MENENTUKAN AKTIVITAS RELATIP PADA TLA. Teknik TLA (Thin Layer Activation) dapat digunakan untuk menentukan tingkat keausan suatu komponen. Bila penentuan tersebut dilakukan secara manual membutuhkan proses perhitungan yang melelahkan. Untuk itu dikembangkan sebuah program komputer yang akan mempercepat proses kompuputasi. Metode yang dipakai pada program ini ialah perhitungan perulangan (iterasi). Perulangan perhitungan meliputi perhitungan energi. laju penurunan energi. fator koreksi dan pemakaian data impirik.. Hasil perhitungan teoritis yang didasarkan program komputer akan dibandingkan dengan hasil ekperimen.. Perbedaan hasil perhitungan teoritis dari program dan hasil eksperimen kurang dari 10%. Sedang waktu komputasi kurang dari satu detik sehingga dapat dimanfaatkan untuk pengukuran secara on line.. Dari hasil ini dapat disimpulkan bahwa program komputer sangat membantu penentuan tingkat aktivitas relatip. ABSTRACTTHE COMPUTER PROGRAM FOR RELATIV ACTIVITY DETERMINATION ON TLA. The TLA (Thin Layer Activation) method can be used for wear measurement of a component. If the measurement is done by hand calculation, .it is need tedious work. For this purpose the computer program for computing speed up is developed. The method used on this program is iteration. The iteration cover the energy degradation of energy. correction factor and empirical data. The result of this program will be compared by the experimental.. The different between the two results is less than 10% and the time process less than 1 second so it is can be used for on line measuring. From this reality it can be concluded that the program is use-full for relative activity measurement.
Simulasi Distribusi Tegangan Sisa Dalam Proses Pengelasan Plat Dengan Metode Elemen Hingga
No full textSimulation of Residual Stress Distribution on Welding Process For Plate Using Finite Element Method. Simulation and modeling were performed to calculate the residual stress on plate welding. The calculation was carried out on the 3 kinds of butt welding types of I, V and Y type. The steel plate St E460 with 16 mm thick, and the welding material standard with the heat conductivity of k = 12 x106 WI °K.m2 and thermal expansion of a = 1 Ox1 0-6 mm/mm were used as a model. The residual stress was calculated by iteration of the strain which was obtained from the temperature distribution during the cooling process on the welding temperature of 25000C to the room temperature by the transient calculation model. The calculation was done by the finite element method using the 2 dimension modeling of ANSYS 5.4. program. The stress distribution showed the residual stress on the welded area was 100 to 550 MPa, depends on the welded junction type. Simulasi dan pemodelan dilakukan untuk menghitung distribusi tegangan sisa dalam proses pengelasan pelat. Perhitungan dilakukan untuk 3 macam tipe sambungan tumpu (butt welded joint) yaitu tipe I, tipe V dan tipe Y. Untuk model perhitungan ditentukan pelat dari baja St E460 dengan tebal sama 16 mm, sedangkan material standard las dengan data koefisien konduksi panas, k = 12 x106 WI °K.m2, dan angka muai termal, a = 10 x10-6 mm/mm. Tegangan sisa dihitung berdasarkan iterasi regangan yang timbul akibat distribusi suhu selama pendinginan dari suhu pengelasan sebesar 2500°C menuju temperatur ruang dengan model perhitungan kondisi transient. Perhitungan berdasarkan metode elemen hingga dengan program ANSYS 5.4. model 2 dimensi. Distribusi tegangan menunjukkan harga tegangan total pad a bahan las berkisar antara 100 sampai dengan 550 MPa, bergantung pada tipe sambungan la
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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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