SISTEM INFORMASI PENGOLAHAN IKAN TUNA UNTUK KETERTELUSURAN PERIKANAN SKALA KECIL

Pencatatan data pengolahan tuna secara manual kadangkala terjadi kesalahan pencatatan, kehilangan dan kerusakan dokumen data dan proses pencarian data manual yang memerlukan waktu yang lama. Tujuan penelitian ini adalah untuk mendigitalisasi pencatatan data pengolahan tuna melalui penggunaan kode internal lot pada setiap tahapan proses pengolahan tuna . Data sampel yaitu berat tuna sejumlah 32,6 ton dari 16 supplier, dan loin yang diproduksi sejumlah 24,5 ton. Metode yang digunakan pada penelitian ini adalah studi kasus dengan mengamati dan mendeskripkan sistem informasi pada perusahaan pengolahan tuna. Kajian sistem pengolahan tuna dilakukan pada periode 26 Januari-15 Februari 2018 melalui implementasi sistem pada jaringan komputer lokal dengan perangkat komputer, timbangan digital, printer label, dan scanner QR Code dengan penempatan komputer pada tiap tahapan proses yang terdiri dari receiving, cutting, retouching, packing dan stuffing. Hasil penelitian menunjukkan bahwa Informasi label berupa kode quick response code (QR Code) yang berisi kode loin, jenis species, grade, berat loin, kode lot internal, kode supplier, jenis ikan, tanggal pengolahan, dan lokasi penangkapan. Melalui penerapan sistem informasi pengolahan tuna, membantu pengelolaan informasi yang baik untuk memudahkan penelusuran produk tuna. Kata Kunci: Pencatatan, Pengolahan Data Tuna, Ketertelusuran, Digital, Sistem Informasi

The Research on Special Printing Effects Based on Gray Component Replacement

The data of CMY ink’s gray balance are got to define the replacement relationship between CMY and K ink by experiment with the digital printer. A special image was got by using CMY and K ink according to the principle of Gray Component Replacement (GCR).The image will have two different appearances by using the spectral response properties of CMY and K ink under visible light and infrared light．This kind of image can achieve the purpose of anti-counterfeiting printing.

Research on a Method for Evaluating the Line Sharpness in Digital Printings

A method for evaluating the line sharpness in digital printings is established. First of all, a test diagram, with some lines spaced with the same distance as the lines width, orienting in horizontal and vertical direction, was designed. A digital printer was used to output the test diagram on eighteen kinds of paper commonly used in market. From the eight attributes of line quality in ISO/IEC 13660 standard, three attributes, that are contrast, edge raggedness and line width, which were extracted our to be the main index describing the line sharpness. Furthermore, connecting them with the subjective evaluation, an evaluation model for predicting the perceived line sharpness were established, and the model show that the perceived line sharpness was highly correlated with these three attributes, among which quantified contrast exhibits the highest correlation with subjective, while raggedness and width exhibits a similar and weaker correlation. The perceived line sharpness was able to be predicted through a linear model.