1,720,957 research outputs found
PENENTUAN KETIDAKPASTIAN ANALISIS Ti,V, Al, Mn, Cl, Ce, Cr, Cs, Sc, Co, Fe, DAN Ca DALAM SAMPEL PADAT SECARA AANI MENGGUNAKAN STANDAR ADISI SESUAI ISO 17025
Full text linkPENENTUAN KETIDAKPASTlAN ANALlSIS Ti, V, Cl, Ce, Cr, Cs, Sc, Co, Fe, dan Ca DALAM SAMPEL PADAT SECARA AANI MENGGUNAKAN STANDAR ADISI SESUAl SNI-I7025. Telah ditentukan ketidakpastian dalam analisis unsur-unsur Ti, V, Cl, Ce, Cr, Cs, Sc, Co, Fe, dan Ca, dalam sampel padat secara AANI (Analisis Aktivasi Neutron Instrumental) dengan metode komparatif dan standar adisi di P3TM BATAN. Sebagai contoh telah disajikan perhitunlgan ketidakpastian analisis unsur Ti. Ketidakpastian dalam INAA berasal dari cara sampling, preparasi sample, preparasi standar, irradiasi dan pencacahan. Sampel dalam percobaan ini diperoleh dari IAEA sudah siap analisis sehingga hanya faktor-faktor, preparasi sampel, preparasi standar, irradiasi dan pencacahan yang dipertimbangkan. Analisis dilakukan secara relatif, sampel maupun standar diirradiasi bersama-sama dalam satu kelongsong agar ketidakpastian dari faktor-faktor irradiasi (meliputi lama irradiasi, fluks neutron, geometri irradiasi), dan sifat-sifat isotopik dapat tereliminasi. Ketidakpastian yang diperoleh dari faktor pencacahan meliputi ketidakpastian dari peluruhan nuklida selama periode pencacahan, hilangnya pulsa karena penjumlahan random, geometri pencacahan. dan laju cacah. Cara relatif ini juga menyebabkan perbedaan waktu pencacahan (diatur dengan alat yang sama), perbedaan geometri pencacahan, ketebalan sampel, fluks neutron, waktu irradiasi dapat teriliminasi. Hasil fisi tidak ada karena tidak terdeteksi adanya uranium dalam sampel yang dianalisis. Tidak adanya perubahan jumlah nuklida target karena selama irradiasi tidak terjadi pembakaran, dan perubahan status kimia tidak mempengaruhi hasil analisis
Pengembangan Bahan Ajar Tematik Berbasis Nilai-Nilai Keislaman Kelas VI Madrasah Ibtidaiyah
Full text linkDevelopment of thematic teaching materials based on Islamic values, especially those related to the contents of the verses of the Alqur\u27an and / or hadith as the basis of all science. In the available books, there are no thematic teaching materials that are integrated with the Al-Quran and Hadith, as well as Islamic values ??that are able to implement the core competencies of the 2013 curriculum, namely the competence of spiritual attitudes in thematic learning. The formulation of this research is: (1) producing thematic teaching materials based on Islamic values ??theme 7 (Leadership) class 6 Madrasah Ibtidaiyah Negeri 2 Jember. (2) to determine the effectiveness of thematic teaching materials based on Islamic values ??in learning. This study uses a research and development research type, the Borg and Gall model which is divided into 10 steps, namely: (1) research and data collection (2) planning, (3) product draft development, (4) initial field trials, ( 5) revising the results of trials, (6) field trials, (7) improving products from field tests, (8) conducting field trials, (9) improving product results, and (10) disseminating and implementing. The testing technique was carried out by comparing the pre-test and post-test values. The data was calculated using the t-test and processed using the SPSS application to determine the effectiveness of teaching materials. The results of this study indicate: the validation test produces an average of 88.79% with the criteria that the book is very suitable for use in learning. In terms of attractiveness, this book is very interesting to use for students, this is based on the results of the questionnaire data given to students with an average of 88.24% with very attractive qualifications. Meanwhile, from the results of the pre-test and post-test based on the t count which shows that it is greater than the t table, it means that the book is effective for use in learning.
Keywords: Teaching Materials; Thematic Learning; Islamic Value
Pengembangan bahan ajar tematik berbasis nilai keislaman, terutama yang terkait dengan isi ayat Alqur\u27an dan/atau hadits sebagai dasar dari semua sains. Dalam buku yang telah tersedia tidak ada bahan ajar tematik yang terintegrasi dengan Al-Quran, dan Hadits, serta nilai-nilai Islam yang mampu mengimplementasikan kompetensi inti dari kurikulum 2013 yaitu kompetensi sikap spiritual dalam pembelajaran tematik. Perumusan penelitian ini yaitu: (1) menghasilkan bahan ajar tematik berbasis nilai keislaman tema 7 (Kepemimpinan) kelas 6 Madrasah Ibtidaiyah Negeri 2 Jember. (2) mengetahui efektifitas bahan ajar tematik berbasis nilai-nilai keislaman dalam pembelajaran. Penelitian ini menggunakan jenis penelitian pengembangan Research and Development, model Borg and Gall yang terbagi menjadi 10 langkah, yaitu: (1) penelitian dan pengumpulan data (2) perencanaan, (3) pengembangan draf produk, (4) uji coba lapangan awal, (5) merevisi hasil uji coba, (6) uji coba lapangan, (7) penyempurnaan produk hasil uji lapangan, (8) uji pelaksanaan lapangan, (9) penyempurnaan produk hasil, dan (10) diseminasi dan implementasi. Teknik uji coba dilakukan dengan membandingkan nilai pre-test dan post-test. Data dihitung dengan uji-t dan diolah menggunakan aplikasi SPSS untuk mengetahui efektifitas bahan ajar. Hasil penelitian ini menunjukkan: uji validasi tersebut rata-rata menghasilkan 88,79 % dengan kriteria bahwa buku tersebut sangat layak untuk digunakan dalam pembelajaran. Dari segi kemenarikan, buku ini sangat menarik untuk digunakan pada siswa, hal ini berdasarkan dari hasil data angket yang diberikan kepada siswa dengan rata-rata 88,24% dengan kualifikasi sangat menarik. Sedangkan dari hasil pre-test dan pos-test berdasarkan uji t hitung yang menunjukan lebih besar dari t tabel, berarti buku tersebut efektif untuk digunakan dalam pembelajaran.
Kata Kunci: Bahan Ajar; Pembelajaran Tematik; Nilai Keislama
SEBARAN RADIOAKTIVITAS RADIONUKLIDA ALAM DAN FAKTOR AKUMULASINYA DALAM AIR, SEDIMEN DAN TANAMAN DI PERAIRAN SUNGAI DAN LAUT SURABAYA
Full text linkSEBARAN RADIOAKTIVITAS RADIONUKLIDA ALAM DAN FAKTOR AKUMULASINYA DALAM AIR, SEDIMEN DAN TANAMAN DI PERAIRAN SUNGAI DAN LAUT SURABAYA. Telah dilakukan analisis radioaktivitas beberapa sampel di beberapa lokasi perairan Surabaya. Sampel untuk penelitian berupa air laut dan air sungai, sedimen permukaan dasar perairan dan eceng gondok. Lokasi pengambilan cuplikan di sungai dan laut pesisir Surabaya yang ditetapkan secara terpilih (bertujuan khusus) di lima (5) titik. Air diuapkan, sedimen dibersihkan, dikeringkan dan dihaluskan; eceng gondok diabukan pada 500 oC kemudian ditentukan paparan radioaktivitas α, β dan γ-nya. Dari hasil penelitian dapat disimpulkan bahwa aktivitas cacah cuplikan lingkungan alam sangat rendah. Aktivitas gross β cuplikan air masih di bawah nilai ambang menurut Men KLH No. Kep.02/MENKLH/I/1988 sebesar 1000 mBq/L dan aktivitas α cuplikan air lebih tinggi dari batas ambang (100 mBq/L) dari SK Men KLH tersebut. Aktivitas paparan radiasi dalam cuplikan eceng gondok ternyata lebih tinggi daripada aktivitas cuplikan air dan sedimen yang menunjukkan adanya perpindahan radionuklida menurut jalur air-sedimen-biota dan terjadinya akumulasi radionuklida dalam organisme perairan. Hasil identifikasi radioisotop dengan teknik spektrometri-γ menunjukkan adanya 2 jenis radioisotop yang terdeteksi K-40 dan Tl-208 dalam beberapa cuplikan dan beberapa lokasi. Keberadaan radioisotop alam ini menunjukkan bahwa sampai saat pencuplikan dilakukan, perairan sungai dan pesisir Surabaya belum terkontaminasi oleh radionuklida buatan hasil fisi. Faktor distribusi FD pada umumnya < Faktor bioakumulasi FB
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
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