Konstruksi dan Analisis Dinamik Model Matematika Sistem Penangkapan Ikan (Studi Kasus Pelabuhan Perikanan Nusantara Brondong)

Penangkapan ikan berlebihan di Laut Jawa menyebabkan populasi ikan terus menurun. Untuk menangani hal ini, diperlukan sosialisasi dan kajian terkait sistem penangkapan ikan. Penelitian ini bertujuan untuk mengkonstruksi model matematika sistem penangkapan ikan yang mengacu pada kondisi Pelabuhan Perikanan Nusantara Brondong Kabupaten Lamongan. Model matematika yang telah dikonstruksi kemudian dianalisis kestabilannya dengan menggunakan kriteria Routh-Hurwitz. Analisis kestabilan menunjukkan bahwa model matematika yang dikonstruksi memiliki tiga titik kesetimbangan, yaitu titik kesetimbangan trivial, titik kesetimbangan tanpa penangkapan ikan dan titik kesetimbangan bioekonomis. Ketiga titik kesetimbangan yang diperoleh bersifat stabil bersyarat. Simulasi numerik menunjukkan bahwa tanpa tindakan penangkapan, populasi ikan dapat menjadi tidak seimbang, sedangkan penangkapan ikan yang tidak terkondisikan, yakni yang tidak memenuhi syarat kestabilan titik kesetimbangan bioekonomis, dapat mengakibatkan kepunahan ikan

NATRIUM CARBONATE (NA2CO3) AS INHIBITOR IN THE CORROSION PROTECTION ON STEEL PIPE ST 41 IN WATER PLUMBING ENVIRONMENTAL

This study aimed to analyze the effect of adding to the rate of steel corrosion inhibitor and comparing the rate of corrosion on steel pipes with and without inhibitors. The testing conducted in Puspitek shown that the most optimum of the inhibitor contained with the addition of 1% due to changes of the pH from 7.30 to 11.80. This shows the increasing of pH occurred sizable value and followed by the declines of potential value (Ecorr) -700.53 mV to -512.39 mV. Thus, the decreasing occurred to the current corrosion value (Icorr) from 2.71 μA/cm2 to 0.31 μA/cm2, while the corrosion rate of carbon steel St 41 decreased most effective after adding 1% Na2CO3 as an inhibitor, the corrosion rate is changed from 1.2437 mpy to 0.1427 mpy

Segmentation of Overlapping Cervical Cells in Normal Pap Smear Images Using Distance-Metric and Morphological Operation

The automatic interpretation of Pap Smear image is one of challenging issues in some aspects. Accurate segmentation for each cell is an important procedurethat must be done so that no information is lost during the evaluation process. However, the presence of overlapping cells in Pap Smear image make the automated analysis of these cytology images become more difficult. In most ofthe studies, cytoplasm segmentation is the difficult stage because the boundaries between cells are very thin. In this study, we propose an algorithm that can segment the overlapping cytoplasm. First, the morphology operation and global thresholding to segment cytoplasm is done. Second, the overlapping area on cytoplasm region is separated using morphological operation and distance criteria on each pixel. The proposed method has been evaluated against the results of manual tracing by experts. The experiment results show that the proposed method can segment the overlapping cytoplasm as similar as experts do, i.e., 2:897 3:632 (mean std) using Hausdorff distance

Segmentasi Mikrofilaria untuk Diagnosis Penyakit Kaki Gajah Berbasis Citra Mikroskopis

Elephantiasis is a chronic disease (chronic) that could attack humans and animals, and causes a permanent disability if not immediately given treatment. Some filaria species in Indonesia include Wuchereria bancrofti, Brugia malayi, and Brugia timori. The main goal in the early treatment of people with this disease is to eradicate parasites or larvae that develop in the patient\u27s body, so that the level of transmission can be reduced. To help identifying the type of microfilaria that develops in the body of the patient, the authors took the initiative to create a computer-assisted program that is expected to recognize microfilaria on peripheral blood preparation. In this case, there are 4 stages of analysis of the microscopic images, namely image readings, preprocessing, segmentation, and shape analysis to identity the microfilaria

Application of Logistic Regression in Analysis of Factors That Affect Implementation of Electronic Medical Record

Electronic Medical Record (EMR) has now become a trend in the world of health care. Lot of obstacles and barriers that interfere implementation of EMR. This paper discussed the eleven factors suspected to affect the implementation of EMR, with a case study hospital in Banyumas. By using logistic regression analysis obtained eight of the eleven factors that significantly affect the implementation of RME. The eight factors are financial factors, Human Resources (HR), the process of changing, psychological factors, legal factors, the time factor, organizational factors, and ICT trends. Technology, infrastructure, and social is a factor that does not significantly affect the implementation of EMR in hospital. ICT trends are new factors that significantly affect the implementation of EMR in hosital