1,721,009 research outputs found
Studi Awal Fabrikasi DSSC (Dye Sensitized Solar Cell) dari Ekstra Daun dan Bunga Putri Malu (Mimosa Pudica Linn) Sebagai Fotosensitizer
Get PDFSalah satu energi potensial sebagai sumber energi altenatif yang terbaharui setiap saat dan untuk mencegah terjadinya krisis energi dimasa depan yaitu dengan pemanfaatan energi sinar matahari. Oleh karena itu, penelitian ini dilakukan untuk menghasilkan sel surya dalam mengkonversi energi matahari menjadi energi listrik. DSSC (Dye Sensitized Solar Cell) telah difabrikasi dengan menggunakan serbuk TiO2 (Titanium Dioksida) yang dilapisi dengan kaca ITO (Indiun Tin Oxide) dan diberi temperatur sintering 450 oC dengan waktu 30 menit yang kemudian disensitasi dalam larutan Dye daun dan bunga putri malu (Mimosa Pudica Linn) dengan waktu perendamam selama 24 jam. Penelitan ini dilakukan pengujian karakterisasi zat warna dengan menggunakan spektrofotometer UV-Vis dan pengujian lapisan morfologi TiO2 serta dye pada permukaan subtrak kaca. DSSC ini di analisa karakteristik Arus (I) dan Tegangan (V) dengan menggunakan penyinaran sinar matahari yaitu pada dye daun putri malu (Voc) 320 mV, arus rangkaian pendek (Isc) 273 μA dengan efisiensi (η) 0,01394 % dan pada bunga putri malu (Voc) 298 mV, arus rangkaian pendek (Isc) 298 μA dengan efisiensi (η) 0.0070 %
Studi Tentang Penyelenggaraan Kegiatan Ekstrakurikuler Batik di SD Negeri Tunjungsekar 1 Kota Malang
No full textABSTRAK Andarweni, Bunga Putri. 2015. . Skripsi, Jurusan Seni dan Desain, Fakultas Sastra, Universitas Negeri Malang. Pembimbing: (I) Drs. Iriaji, M.Pd,(II) Fenny Rochbeind, S.Pd, M.Sn. Kata kunci: penyelenggaran, ektrakurikuler, batik, SD Negeri Tunjungsekar 1. Penyelenggaraan kegiatan ekstrakurikuler bertujuanuntuk mengembangkan potensi, bakat, minat peserta didik. Ekstrakurikuler batik di SD Negeri Tunjungsekar 1 Kota Malang memiliki keunggulan yaitu memperoleh prestasi dalam berbagai perlombaan.Penelitian ini bertujuan untuk mendeskripsikan pengembangan, pelaksanaan, penilaian guru terhadap proses dan hasil karya batik peserta didik, evaluasi program, serta faktor pendukung dan penghambat kegiatan ekstrakurikuler batik di SDN Tunjungsekar 1 Kota Malang. Penelitian ini termasuk dalam penelitian deskriptif kualitatif. Lokasi penelitian di SDN Tunjungsekar 1 Kota Malang yang berada di Jl. Ikan Piranha Atas No. 187 Kecamatan Lowokwaru Kota Malang. Sumber data primer dari hasil wawancara kepala sekolah, guru ekstrakurikuler, koordinator ekstrakurikuler serta peserta didik.Data sekunder dari perangkat pembelajaran guru. Prosedur pengumpulan data dilakukan dengan teknik dokumentasi, wawancara, dan observasi. Analisa data dilakukan dengan cara reduksi, penyajian data, dan pengambilan simpulan. Pengecekan keabsahan data dilakukan dengan cara memperpanjang kehadiran, ketekunan pengamatan, dan triangulasi. Hasil penelitian: (1) ekstrakurikuler batik termasuk jenis ekstrakurikuler pilihan. Pihak yang terlibat terdiri dari pihak sekolah, orang tua, dan peserta didik. Kegiatan diadakan setiaphariRabu pukul 13.00-14.00WIB, (2)pada tahap tahap pelaksanaan, guru merencanakan pembelajaran sesuai dengan langkah-langkah proses membatik, dimulaidariteoridilanjutkanpadapraktekmembatik. Guru menerapkan pendekatan prosedural.Metode pembelajaran yang digunakan yaitu metode imitasi/mencontoh,drill, dan metode karya cipta terarah. Materi pembelajaran terdiri dari materi pengetahuan batik tulis tradisional, pengetahuan alat dan bahan serta teknik membatik. Media membatik yang digunakan adalah canting, wajan, dan kompor minyak, serta taplak. Bahan yang dipergunakan terdiri dari kain mori, malam/lilin, dan pewarna batik remasol. Proses membatik yaitumemola kain, membatik, medelatau mewarna kain,dan ngelorot. Teknik penilaian proses berkarya guru adalah teknik observasi. Teknik penilaian hasil karya adalah teknik penilaian produk, (3)fokus penilaian program kepada keaktifan pembimbing dan peserta didik serta kelengkapan sarana prasarana penunjang kegiatan ekstrakurikuler,(4) faktor pendukung meliputi faktor intern yaitu bakat, minat, dan motivasi peserta didik, sedangkan faktor ekstern adalah dukungan sarana prasarana dari keluarga dan sekolah. Faktor penghambat kegiatan ekstrakurikuler batik yaitupenyesuaian jadwalkegiatan. Saran yang dapat diberikan dalam penelitian ini hendaknya lebih mematangkan dalam membuat perencanaan pembelajaran dandiharapkandapat menambahkanalokasi waktu penyelenggaraan yang masih terlalu singkat
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
- …
