Pengenalan Karakter Tulisan Tangan Dengan K-Support Vector Nearest Neighbor

Wijaya, Aditya Surya; Chamidah, Nurul; Santoni, Mayanda Mega

doi:10.22146/ijeis.38729

Cited by 3 publications

(5 citation statements)

References 10 publications

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“…2b), the absorption band showing Brønsted acid site reappeared after impregnation with Ni metal. The characterization results show that the IR spectra could hardly give a clear indication of the presence of zirconium oxide as a pillar within the interlayer of bentonite [8].…”

Section: X-ray Fluorosence Analysismentioning

confidence: 92%

“…In previous study, it was found that the clay samples used were montmorillonite minerals with typical peaks in d 001 at 2θ = 5.29º (d = 16.69 Å) [8]. The typical peak of montmorillonite is still visible but has shifted to angle 2θ smaller than 5º.…”

Section: X-ray Fluorosence Analysismentioning

confidence: 93%

“…However, some factors such as thermal stability and weak acidity of its in-between layers still need to be overcome. Thus, modifications such as pillarization using metal oxide can be used as an alternative to overcome subdue problems [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Diffractogram of (a) ZrO2-bentonite and (b) Ni/ZrO2-bentonite d 001[8]. Lower intensity indicates that the thermal treatment and chemical reactions have considerable effects on the montmorillonite structure.…”

mentioning

confidence: 99%

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Synthesis and Characterization of Ni/ZrO2-Bentonite

Mirzan¹,

Wijaya²,

Falah³

et al. 2018

Asian J. Chem.

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Clay is a natural material constructed from the tetrahedral silica sheet and octahedral alumina. The most important minerals in clays are those that have layered structures and are classified as phyllosilicate. Phyllosilicate is structured lattice silicates which are formed from a series of silica tetrahedral sheets with octahedral alumina bonded due to oxygen atoms used together. Among the most commonly used phyllosilicate clay minerals for making pillared layered solids is the montmorillonite group (bentonite). Montmorillonite attracts a lot of attention as it has the ability to expand (swell) has exchangeable cations and can be intercalated. Montmorillonite is included in the smectite group, having molecular formula Nax[Al(x-2)Mgx(Si4O10)(OH)]· mH2O [1,2].It is easy to expand nature and its ability to exchange ions through the cations exchange mechanism are potential key points for clay modifications. The modifications inferred include intercalation, which is the replacement of ions between the silicate layers with the cationic polymer in the form of organic Bentonite as a carrier was modified by means of pillarization using ZrOCl2·8H2O pillaring solution. Calcination was performed to obtain ZrO2 bounded bentonite. To create a bifunctional catalyst, ZrO2-bentonite was impregnated using Ni(NO3)2·6H2O precursor as nickel metal source. Subsequently, calcination and reduction steps were performed to obtain Ni/ZrO2-bentonite catalyst. The physical-chemical properties of catalyst was characterized by XRD, XRF and the surface area was analyzed with BET, surface acidity with gravimetric method using NH3 vapour, FT-IR and TEM. The characterized results by XRD showed specific peaks of montmorillonite mineral still visible after the pillarization and impregnation process with nickel metal. The XRD analysis also showed an increase in basal spacing d001 of the catalyst sample after the pillarization process characterized by the shifting of specific peaks d001 to the left (2θ < 5º). The XRF analysis showed that the nickel content in bentonite sample was increased after impregnation with the Ni(NO3)2·6H2O precursor. Qualitatively, acidity of the catalysts was determined by FTIR showing characteristics for Brønsted and Lewis acids at wavenumbers 1635-1381 cm -1 . Surface area analysis results showed an increase in specific surface area after pillarization and impregnation with nickel metal.This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License, which allows others to copy and redistribute the material in any medium or format, remix, transform, and build upon the material, as long as appropriate credit is given and the new creations are licensed under the identical terms.

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Section: X-ray Fluorosence Analysismentioning

confidence: 92%

Section: X-ray Fluorosence Analysismentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Synthesis and Characterization of Ni/ZrO2-Bentonite

Mirzan¹,

Wijaya²,

Falah³

et al. 2018

Asian J. Chem.

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“…Tahap ini adalah tahap untuk menemukan dan memperbaiki kualitas citra judul buku TGA. Citra asli berupa citra berwarna diubah menjadi citra gray [11] dengan persamaan (1). Gray=0.2989xR+0.5870xG+0.1140xB…”

Section: Preprocessingunclassified

Untitled

Mellyssa¹

2021

JETT

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Pendokumentasian buku Tugas Akhir (TGA) mahasiswa sangat penting untuk pemetaan penelitian serta meminimalisir adanya tindakan plagiarisme Pada beberapa kasus banyak buku TGA yang belum terdata dengan benar, sehingga staf administrasi perpustakaan baik tingkat institusi dan jurusan harus mendata ulang dengan sistem manual sehingga kegiatan ini dapat menghabiskan waktu yang tidak sedikit. Dengan alasan tersebut, maka penelitian ini bertujuan untuk membangun suatu sistem yang dapat membantu proses dokumentasi yang cepat dan mudah. Sistem berupa perangkat lunak berbasis pengolahan citra digital. Citra sampul buku TGA diambil menggunakan webcam dan selanjutnya diproses dengan tahapan preprocessing, binerisasi, segmentasi dan pengenalan karakter. Hasil penelitian berupa data judul buku. Metode yang akan digunakan dalam penelitian ini antara lain proses akuisisi dibantu dengan kotak peletakan buku, Otsu Thresholding, segmentasi, dan pengenalan pola menggunakan metode Koefisian Korelasi. Dari hasil penelitian yang telah dilakukan didapatkan hasil bahwa tingkat keberhasilan keseluruhan sistem dalam mengenali pola citra huruf pada buku TGA mahasiswa sebesar 95%.

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