Judul: The Effect of Ambient Temperature and Light Intensity on the Performance of Non-Invasive Hemoglobin Measuring Instruments
Abstrak: Banyak peneliti yang telah mengembangkan teknik pengukuran hemoglobin dengan metode non-invansive. Tetapi penelitian yang telah dilakukan masih perlu adanya penyempurnaan pada alat. Salah satunya alat ukur hemoglobin non-invasive yang dikembangkan oleh IPB. Penelitian yang sudah dilakukan menghasilkan nilai pengukuran yang berbeda ketika pengukuran dilakukan di dalam ruangan dengan di luar ruangan. Hal tersebut kemungkinan terjadi karena adanya kegagalan alat yang dipengaruhi oleh perubahan suhu serta intensitas cahaya lingkungan pengukuran yang masuk ke dalam alat. Oleh karena itu dilakukan penelitian mengenai pengaruh suhu dan intensitas cahaya lingkungan terhadap performa alat ukur hemoglobin non-invasive. Penelitian diawali dengan melakukan uji kestabilan pada alat dengan tiga kondisi yang berbeda. Diperoleh hasil bahwa alat tersebut memiliki kestabilan yang cukup baik pada satu kondisi tetapi menghasilkan perbedaan nilai pengukuran yang cukup signifikan pada kondisi yang berbeda. Hasil yang didapatkan menunjukan bahwa komponen pada alat memerlukan waktu untuk menyesuaikan dengan perubahan kondisi lingkungan pengukuran agar hasil pengukuran yang didapat optimal dan stabil. Perbandingan hasil pengukuran hemoglobin darah pada alat non-invasive dengan alat invasive menunjukan bahwa alat ukur hemoglobin non-invasive yang dikembangkan sudah mengikuti tren perubahan hemoglobin yang terukur pada alat invasive, Many researchers have developed hemoglobin measurement techniques with non-invasive methods. But the research that has been done still needs improvement in the tool. One of them is a non-invasive hemoglobin measurement tool developed by IPB. The research that has been done produces different measurement values when measurements are taken indoors and outdoors. This is likely due to the failure of the device which is affected by changes in temperature and the light intensity of the measurement environment that enters the device. Therefore, a study was carried out on the effect of ambient temperature and light intensity on the performance of a non-invasive hemoglobin measuring instrument. The research begins by conducting a stability test on the tool with three different conditions. The results show that the tool has fairly good stability in one condition but produces significant differences in measurement values under different conditions. The results obtained show that the components of the tool need time to adjust to changing environmental conditions of measurement so that the measurement results obtained are optimal and stable. Comparison of the results of blood hemoglobin measurements on non-invasive devices with invasive devices shows that the non-invasive hemoglobin measurement tool developed has followed the trend of changes in hemoglobin measured on invasive devices.
Keyword: hemoglobin, light intensity, non-invasive, temperature

Judul: Non-Invasive Hemoglobin Measurement Tool Calibration
Abstrak: Di seluruh dunia prosentase penderita anemia, yaitu suatu keadaan rendahnya kadar hemoglobin dalam darah, masih tinggi. Oleh karena itu alat ukur hemoglobin sangat diperlukan. Namun sampai sekarang kebanyakan alat ukur hemoglobin masih menggunakan metoda invasive yang mengambil sampel darah dengan melukai pasien. Walaupun memiliki ketelitian yang sangat tinggi namun metoda invasive bisa menyebabkan ketidaknyamanan atau trauma bagi sebagian orang. Oleh karena itu dibutuhkan alat ukur hemoglobin non-invasive yang mudah digunakan dan hasilnya bisa diandalkan. Penelitian ini melakukan kalibrasi sekaligus pengembangan terhadap alat ukur hemoglobin non-invasive hasil penelitan sebelumnya. Alat ini bekerja menggunakan prinsip reflektansi dimana LED pada probe memancarkan cahaya yang menembus kulit hingga mencapai pembuluh vena yang berisi darah yang mengandung hemoglobin. Pantulan cahaya dari vena diterima sensor photodiode, yang kemudian dikonversi menjadi data digital oleh ADS1115 dan disimpan dalam bentuk database di dalam Raspberry Pi. Data kemudian diolah menggunakan regresi linear berganda untuk kalibrasi dengan data pengukuran hemoglobin metoda SLS sebagai ground truth sehingga didapatkan persamaan linear berganda. Nilai Root Mean Squared Error (RMSE) pada tahap kalibrasi didapatkan sebesar 1,332, yang berarti memenuhi syarat karena berdasarkan Jurnal Biomedical and Health Informatics persyaratan alat ukur hemoglobin nilai maksimal RMSE sebesar 1,352. Selanjutnya persamaan ini kemudian dimasukkan pada alat untuk proses validasi. Hasil validasi yang mendapatkan nilai RSME sebesar 1,264 yang berarti cukup rendah, atau alatnya cukup teliti., Throughout the world the percentage of people with anemia, which is a condition of low levels of hemoglobin in the blood, is still high. Therefore a hemoglobin measuring tool is needed. However, until now most hemoglobin measuring tools still use invasive methods which take blood samples by injuring the patient. Even though it has very high accuracy, the invasive method can cause discomfort or trauma for some people. Therefore, a non-invasive hemoglobin measuring tool is needed that is easy to use and has reliable results. This study calibrated as well as developed a non-invasive hemoglobin measuring tools resulting from previous research. This tool works using the principle of reflectance where the LED on the probe emits light that penetrates the skin until it reaches the veins which contain blood containing hemoglobin. The light reflected from the veins is received by the photodiode sensor, which is then converted into digital data by the ADS1115 and stored in a database on the Raspberry Pi. The data was then processed using multiple linear regression for calibration with hemoglobin measurement data using the SLS method as the ground truth so that a multiple linear equation was obtained. The Root Mean Squared Error (RMSE) value at the calibration stage was 1.332, which means that it meets the requirements because based on the Biomedical and Health Informatics Journal the maximum RMSE value for the hemoglobin measuring instrument is 1.352. Furthermore, this equation is then entered into the tool for the validation process. The validation results obtained an RSME value of 1,264 which means it is quite low, or the tool is quite thorough.
Keyword: Anemia, hemoglobin, non-invasive, Raspberry Pi

Judul: Konstruksi Hukum Grup Kurva Eliptik Atas F3m
Abstrak: Elliptic curves upon F3m can be divided in two cases, i.e. supersingular and nonsupersingular case. Based on group laws on elliptic curves, a new arithmetic upon F3m can be formulated as an addition process of two random points on the curve. This addition process can then be applied to the ElGamal algorithm.
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