AbstrakDalam bidang kesehatan, segmentasi biasa digunakan untuk mempermudah tenaga medis untuk menginterpretasikan citra medis pasien khususnya di bidang radiografi. Dengan memanfaatkan intensitas dan nilai piksel citra, segmentasi citra radiografi dengan metode k-means clustering dapat dilakukan. Pada penelitian ini, citra yang digunakan adalah citra paru hasil Computed Radiography (CR). Adapun tujuan dari penelitian ini adalah untuk mengetahui nilai k (jumlah cluster) yang tepat untuk memvisualisasikan citra CR dengan mengabaikan citra jantung yang terbentuk pada citra paru kiri. Jumlah cluster yang terbentuk divisualisasikan dengan jumlah warna yang terbentuk pada citra hasil clustering. Algoritma clustering disusun dengan menggunakan program Matlab 2013a, dengan menguji coba nilai k = 3, 4, 5,...,10. Dari penelitian diperoleh bahwa k = 8 dapat memvisualisasikan pembentukan warna yang lebih nyata dibanding dengan jumlah cluster yang lain. Kata kunci: citra paru, segmentasi, k-means clustering Lung Image Segmentation Using k-Means Clustering Abstract In the field of health, segmentation is commonly used to facilitate medical personnel to interpret the patient's medical image, especially in the field of radiography. By utilizing the intensity and value of image pixels, radiographic image segmentation by k-means clustering method can be done. In this study, the image used is the Computed Radiography (CR) lung image. The purpose of this study is to

This study aims to analyze the effect of financial ratios and company size on the financial distress condition of manufacturing companies. Financial distress is measured by an interest coverage ratio, a ratio that is smaller than 1 in the category of financial distress.the financial ratio in this study use liquidity ratios measured by the current ratio, leverage ratio as measured by debt to total asset ratio, and profitability ratio measured by return on investment. The size of the company in this study uses a proxy ln for total assets. The population in this study is manufacturing sector companies in 2015-2017. The sampling technique uses purposive sampling.the sample used inthis study was 69 companies consisting of 24 companies categorized as financial distress and 45 non-financial distres.data analysis techniques using logistic regression analysis with dummy cariables. The results showed hat the liquidity ratio had a significant negative effect, leverage ratio has no significant effect, profitability ratios have a negative and significant effect,and firm size does not significantly influence financial distress. For company manager, it is recommended to pay attention to the factors that influence financial distress in order to be able to overcome the problem earlier. For the next researchers is expected to add a number of other variables that are suspected to have an influence of financial distress and it is recommended to choose other research objects, in order to expand the research objects so that it is able to generalize the result of the study and use other types of financial distress measurement in addition to the interest coverage ratio (ICR). Keyword: liquidity, leverage, profitability, firm size, financial distress

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Program Pengabdian kepada Masyarakat ini dilakukan dalam bentuk penyuluhan kepada 60 orang siswa (peserta penyuluhan) SMAN 1 Talang Kelapa, Banyuasin Sumatera Selatan dengan tujuan untuk memperkenalkan peran ilmu fisika dalam bidang kesehatan sehingga dapat meningkatkan minat peserta terhadap pembelajaran fisika. Materi penyuluhan terdiri atas 3 materi pokok yaitu pengenalan fisika kesehatan/medis secara umum, peran serta radiasi dalam bidang kesehatan dan pengenalan alat-alat medis yang menggunakan prinsip fisika. Diakhir kegiatan, peserta penyuluhan diberikan kuisioner untuk mengetahui tingkat efektivitas kegiatan penyuluhan serta mengetahui daya tarik peserta terhadap fisika medis. Berdasarkan hasil kuisioner, diketahui sebelum kegiatan penyuluhan sebanyak 54% peserta kurang tertarik dengan fisika dan 13% menyatakan tidak menyukai fisika. Namun setelah kegiatan penyuluhan, nilai ini mengalami penurunan. Hanya 13% dari peserta yang menyatakan kurang tertarik dan 3% dari peserta menyatakan tidak tertarik dengan fisika. Dapat disimpulkan bahwa kegiatan penyuluhan yang diberikan ini dinilai cukup efektif karena dapat meningkatkan minat peserta penyuluhan terhadap pembelajaran fisika. Kata kunci : fisika medis, radiasi, alat kesehatan Abstract This community service program was conducted in the form of counseling to 60 students (counseling participants) of SMAN 1 Talang Kelapa, Banyuasin South Sumatra with the aim to introduce the role of physics in the field of health so this can increase participants' interest in learning physics. The material consists of 3 main subjects, introduction of health physics / medical physics in general, the role of physics and radiation, and the introduction of medical devices that use the principles of physics. At the end of the activity, the participants were given a questionnaire to find out the effectiveness of the program and to know the attractiveness of the participants on medical physics. Based on the results, it was known that before the counseling activity, as much as 54% of the participants were less interested in physics and 13% said that they did not like physics. However, after program, this value has decreased. Only 13% of the participants less interest and 3% of the participants still had no interest in physics. It can be concluded that the program are considered quite effective because it can increase the interest of participants towards the physics learning. Key words :medical physics, radiation, medical devices

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