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Analisis Tekstur Stainless Steel (SS) SS 316-L menggunakan Metode Difraksi Neutron.
No full textTexture analysis of bulk Stainless Steel 316-L (SS 316-L) have been performed using
neutron diffraction method. The presence of phase formed in SS 316-L were analyzed
qualitatively using the Four Circle Diffractometer/Texture Diffractometer(FCD/TD).
The diffraction data were analyzed by means of the Rietveld refinement method
utilizing MAUD (Material Analysis Using Diffraction) software. In this research, the
standard sample Silicon 640-d has been selected as the instrument calibration. From
analysis the instrument calibration data, were obtained the neutron wavelength λ
equals to λ= 1,281±10-4 Å and caglioti factor U= 0,05±2x10-2%, V= 0,22±5x10-2%,
W= -0,28±2x10-4%. From analysis diffraction pattern, were collected Reliability
profile factor respectively(Rwp) and Reliability profile factor expectation(Rexp) are
37,91% and 33,66%. The analysis result shows that the fitting chi square χ2 equals to
1,14. The diffraction data of bulk SS 316-L were analyzed by enter the refinement
instrument calibration data, the neutron wavelength and caglioti factor. From
diffraction data, were obtained that SS 316-L consist gamma Iron(γ-Fe) phase and
the lattice parameters a=b=c=3.61±2x10-4 Å. The lattice parameters are used as one
of the input parameter for the texture experiment. By entering the data of three peaks
of Bragg were obtained three pole figures (111), (200), and (220) that crystallite
orientation (texture) occur for bulk SS 316-L. From the pole figures of (111), (200)
and (220), it is shown that maximum orientation distribution density is 1,80 m.r.d
(multiple of a random distribution). Pole figure analysis performed by using
stereographic projection to show the location of the pole that indicates the texture of
bulk SS 316-L. From the result of the analysis plane (111), (200) and (220) were
obtained the location of the poles are (112), (211), and (121). From analysis showed
that the stereographic projection method can be used to determine the direction of
the texture orientation of the pole figure (111), (200) and (220) are {211},
{211}, and {211}.92 HalamanSkripsi Sarjan
Analisis Tekstur Stainless Steel (SS) 316-L Menggunakan Metode Difraksi Neutron
No full textTexture analysis of bulk Stainless Steel 316-L (SS 316-L) have been performed using neutron diffraction method. The presence of phase formed in SS 316-L were analyzed qualitatively using the Four Circle Diffractometer/Texture Diffractometer(FCD/TD). The diffraction data were analyzed by means of the Rietveld refinement method utilizing MAUD (Material Analysis Using Diffraction) software. In this research, the standard sample Silicon 640-d has been selected as the instrument calibration. From analysis the instrument calibration data, were obtained the neutron wavelength λ equals to λ= 1,281±10-4 Å and caglioti factor U= 0,05±2x10-2%, V= 0,22±5x10-2%, W= -0,28±2x10-4%. From analysis diffraction pattern, were collected Reliability profile factor respectively(Rwp) and Reliability profile factor expectation(Rexp) are 37,91% and 33,66%. The analysis result shows that the fitting chi square χ2 equals to 1,14. The diffraction data of bulk SS 316-L were analyzed by enter the refinement instrument calibration data, the neutron wavelength and caglioti factor. From diffraction data, were obtained that SS 316-L consist gamma Iron(γ-Fe) phase and the lattice parameters a=b=c=3.61±2x10-4 Å. The lattice parameters are used as one of the input parameter for the texture experiment. By entering the data of three peaks of Bragg were obtained three pole figures (111), (200), and (220) that crystallite orientation (texture) occur for bulk SS 316-L. From the pole figures of (111), (200) and (220), it is shown that maximum orientation distribution density is 1,80 m.r.d (multiple of a random distribution). Pole figure analysis performed by using stereographic projection to show the location of the pole that indicates the texture of bulk SS 316-L. From the result of the analysis plane (111), (200) and (220) were obtained the location of the poles are (112), (211), and (121). From analysis showed that the stereographic projection method can be used to determine the direction of the texture orientation of the pole figure (111), (200) and (220) are {211}, {211}, and {211}.Telah dilakukan analisis tekstur pada bulk Stainless Steel 316-L (SS 316-L) menggunakan metode difraksi neutron. Keberadaan fasa yang terbentuk didalam cuplikan SS 316-L dianalisis secara kualitatif dengan difraktometer tekstur empat sumbu/difraktometer tekstur (FCD/TD). Data difraksi dianalisis dengan metode penghalusan Rietveld memanfaatkan software MAUD (Material Analysis Using Diffraction). Dalam penelitian ini dipilih sampel standar Silikon 640-d sebagai kalibrasi alat. Dari analisis data kalibrasi alat, diperoleh panjang gelombang neutron sebesar λ= 1,281±10-4 Å dan faktor caglioti U= 0,05±2x10-2%, V= 0,22±5x10-2%, W= -0,28±2x10-4%. Dari analisis pola difraksi diperoleh Reliabilitas faktor profil dengan pembobotan (Rwp) dan Reliabilitas faktor profil yang diharapkan (Rexp) masing-masing adalah 37,91% dan 33,66%. Hasil analisis menunjukkan fitting chi square (χ2) sebesar 1,14. Data difraksi bulk SS 316-L dianalisis dengan memasukkan hasil penghalusan data kalibrasi alat, yakni panjang gelombang dan faktor caglioti. Dari data difraksi neutron diperoleh bahwa SS 316-L terdiri dari fasa gamma Fe (γ-Fe) dengan parameter kisi sebesar a=b=c=3.61±2x10-4 Å. Parameter kisi digunakan sebagai salah satu parameter masukan untuk eksperimen tekstur. Dengan memasukkan tiga puncak Bragg sehingga diperoleh tiga gambar kutub (111), (200), dan (220) bahwa telah terjadi orientasi kristalit (tekstur) pada bulk SS 316-L. Dari gambar kutub (111), (200) dan (220) ditunjukkan bahwa kerapatan distribusi orientasi maksimum sebesar 1,80 m.r.d (multiple of a random distribution). Untuk menganalisis gambar kutub, dilakukan dengan menggunakan proyeksi stereografi untuk menunjukkan letak pole yang mengindikasikan tekstur pada bulk SS 316-L. Dari hasil analisis tersebut bidang (111), (200) dan (220) diperoleh letak pole masing-masing adalah (112), (211), dan (121). Dari analisis tersebut menyimpulkan bahwa proyeksi stereografi dapat digunakan untuk menentukan arah orientasi tekstur pada gambar kutub (111), (200) dan (220) masing-masing memiliki orientasi{211}, {211}, dan {211}.95 HalamanSkripsi Sarjan
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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