1,720,954 research outputs found
ANALISA PROPAGASI KA-BAND PADA SATELIT TELEDESIC UNTUK KOMUNIKASI DATA (KA-BAND PROPAGATION ANALYSIS ON TELEDESIC SATELLITE FOR DATA COMMUNICATION)
Full text linkABSTRAKSI: Perkembangan teknologi informasi mendorong peningkatan penggunaan komunikasi data yang semakin besar. Frekuensi C-band yang dipakai saat ini, tidak akan mampu menampung kebutuhan informasi user yang terus meningkat. Solusi untuk mengatasi masalah tersebut adalah dengan menggunakan frekuensi Ka-band. Namun penggunaan frekuensi Ka-band tidak mudah untuk diterapkan, banyak hal yang mempengaruhinya antara lain : redaman hujan, redaman awan, redaman gas-gas atmosfir, redaman scintilasi, dan depolarisasi. Dalam tugas akhir ini dibahas masalah propagasi pada frekuensi Ka-band. Masalah utamanya adalah redaman hujan yang begitu besar. Didalam tugas akhir ini, perhitungan redaman hujan menggunakan beberapa model prediksi, yaitu : ITU-R-618-5, ITU-R-618-6, Global-Crane, serta Simple Attenuation model (SAM). Dalam pembahasan ini digunakan satelit LEO, khususnya satelit Teledesic yang memiliki coverage global. Untuk melayani wilayah indonesia mulai dari 12,95 o LU sampai dengan 12,95 o LS dibutuhkan 6 buah satelit pada ketinggian 1375 Km dengan sudut elevasi minimum 40 o , luas 1 footprint efektif adalah 13,619952 x 106 Km 2 dan waktu pelayan satelit untuk satu titik di bumi adalah 4,791 menit. Perhitungan redaman hujan dilakukan di 8 kota besar, dihasilkan bahwa redaman maksimum pada availability 99,99 % untuk uplink 139,75 dB (Global crane) dan downlink 73,66 dB (SAM). Redaman awan maksimum uplink 1,27 dB, downlink 0,56 dB. Redaman gas-gas atmosfir maksimum uplink 2,21 dB, downlink 1,81 dB. Redaman scintilasi maksimum uplink 0,79 dB, downlink 0,62 dB. Spesifikasi sistem meliputi: diameter antena VSAT 0,8 meter dengan power transmit 1 watt, antena HUB 5 meter dengan power transmit 5 watt, mampu melayani user dengan bitrate inbound 2 Mbps dan outbound 64 Mbps pada kondisi terburuk (sudut elevasi minimum dan kondisi hujan) dengan availability 99,2 %.Kata Kunci : ABSTRACT: Information technology development has made increase of data communication. C-band frequency used until now, will not afford user requirement. Solution for the problem is using Ka-band frequency, alto Ka-band frequency isn’t easy to applied. Many factor influence it, such as rain attenuation, cloud attenuation, gaseous atmosphere attenuation, scintillation attenuation, and depolarization. On this final assignment being studied about propagation of Ka-band frequency. The main problem is rain attenuation. Calculation of rain attenuation using prediction models, such as ITU-R-618-5, ITU-R-618-6, Global-Crane, and Simple Attenuation model (SAM). On this studies, LEO satellite is being use especially teledesic satellite which have global coverage. To serve Indonesia from12,95 o LU to 12,95 o LS need 6 satellites at 1375 Km of altitude and minimum elevation angle of 40 o , coverage of 1 footprint effectively 13,619952 19952 x 106 Km 2 wide and visibility time 4,791 minutes. Calculation of rain attenuation used on 8 cities, confirm attenuation availability at 99,99% is 139,75 dB uplink (Global crane), 73,66 dB downlink (SAM). maximum Cloud attenuation 1,27 dB uplink, 0.56 dB downlink. Maximum gaseous atmosphere attenuation 2.21 dB uplink, 1,81 dB downlink. Maximum scintillation attenuation 0,95 dB uplink, 0,75 dB downlink. System specification are VSAT antenna diameter of 0,8 meters with power transmitter of 1 watt, HUB antenna diameter of 5 meters with power transmitter 5 watt, can cover user with bit rate inbound of 2 Mbps and outbound of 64 Mbps at worst condition (minimum elevation angle and rainy) with availability of 99,2 %Keyword
PENGARUH SUKU BUNGA, INFLASI DAN PENGELUARAN PEMERINTAH TERHADAP PERTUMBUHAN EKONOMI DI PROVINSI ACEH
No full textPENGARUH SUKU BUNGA, INFLASI DAN PENGELUARAN PEMERINTAH TERHADAP PERTUMBUHAN EKONOMI DI PROVINSI ACEHNama: Dedi Satria HasmaNIM: 1209200010055Pembimbing :1.Prof. DR. Raja Masbar, M. Sc2.Prof. DR. Mohd. Nursyechalad, MSABSTRAKPenelitian ini bertujuan untuk menganalisa apakah suku bunga, inflasi dan pengeluaran pemerintah berpengaruh terhadap tingkat pertumbuhan ekonomi di Provinsi Aceh. Model yang digunakan dalam penelitian ini adalah regresi linear berganda (Multiple Regressions). Hasil estimasi menunjukkan bahwa pengujian secara umum maupun secara parsial, semua variabel bebas dalam penelitian ini yaitu suku bunga, inflasi dan pengeluaran pemerintah berpengaruh signifikan terhadap pertumbuhan ekonomi di Provinsi Aceh. Berdasarkan hasil estimasi variabel inflasi dan suku bunga berpengaruh negatif dan signifikan dan pengeluaran pemerintah berpengaruh positif dan signifikan terhadap pertumbuhan ekonomi di Provinsi Aceh, hal ini sesuai dengan hipotesis yang dirumuskan dalam penelitian ini. Koefisien determinan (R2) sebesar 51,3 persen menunjukkan bahwa variabel, inflasi, suku bunga dan pengeluaran pemerintah berpengaruh terhadap pertumbuhan ekonomi di Provinsi Aceh sebesar 51,3 persen dan sisanya sebesar 48,7 persen dipengaruhi oleh variabel lainnya seperti investasi, kredit, ekspektasi adaftif, ekspektasi rasional dan lain-lain.Kata Kunci : Suku Bunga, Inflasi, Pengeluaran Pemerintah dan Pertumbuhan EkonomiTHE IMPACT OF INTEREST RATE, INFLATION AND GOVERMENT EXPENDITURE TO ECONOMICS GROWTH IN PROVINCE OF ACEHName: Dedi Satria HasmaNIM: 1209200010055Supervisor :1.Prof. DR. Raja Masbar, M. Sc2.Prof. DR. Mohd. Nursyechalad, MSABSTRACTThis research aims to analyze whether interest rate, inflation and government expenditure have effect to level of economics growth in Province of Aceh. The research model is Multiple Regressions. Generally and partially, The estimation result show that all independent variables (interest rate, inflation and government expenditure) effect economics growth significantly in Province of Aceh. Based on estimation result showthat inflation and interest rate have negative effect and significantly influence to level of economic growth in province of Aceh. The government expinditure has positive effect and significantly influence to economics growth in Province of Aceh. The result is accordance with the formulated hypothesis research which the determinant coefficients (R2) is 51.3 percent that indicates The estimation result showthat all independent variables (interest rate, inflation and government expenditure) effect economics growth 51,3 percent and 48.7 percent, the economics growth are influenced by other variables such as investments, credit, adaptive and rational expectations, etc.Keyword : Interest Rate, Inflation, Government Expenditure, Economics Growth
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
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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