Article Per Year (5 Year)
p-Index From 2020 - 2025
1.376
P-Index
This Author published in this journals
All Journal Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) JURNAL INSTEK (Informatika Sains dan Teknologi) Jurnal Teknologi Elekterika Lontara Journal Of Health Science And Technology
Usman Umar
Program Studi Pendidikan Guru Sekolah Dasar FKIP Untan, Pontianak
Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Mathematics Medicine & Pharmacology Other

Published : 9 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 9 Documents
Search

 1 
PENINGKATAN AKTIVITAS PEMBELAJARAN PKn MENGGUNAKAN METODE KERJA KELOMPOK DI KELAS IV SEKOLAH DASAR Umar, Usman; Margiati, K. Y.; Kresnady, Hery
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 4, No 1 (2015): Januari 2015
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstrak: Masalah pada penelitian ini adalah usaha meningkatkan aktivitas peserta didik melalui metode kerja kelompok pada pelajaran Pendidikan Kewarganegaraan kelas IV Sekolah Dasar Negeri 28 Sungai Raya Kubu Raya. Metode penelitiannya adalah deskriptif, bentuk penelitian yaitu penelitian tindakan kelas (PTK), dan bersifat kolaboratif, subyek nya guru dan peserta didik kelas IV Sekolah Dasar Negeri 28 Sungai Raya Kubu Raya yang berjumlah 21 orang. Teknik yang digunakan adalah teknik observasi langsung, teknik dokumenter, dan alat pengumpul data yang digunakan adalah lembar observasi. Berdasarkan observasi melalui metode kerja kelompok dapat meningkatkan aktivitas peserta didik. Hal ini menunjukkan bahwa hipotesis yang menyatakan penerapan metode kerja kelompokpada pelajaran Pendidikan Kewarganegaraan di kelas IV Sekolah Dasar Negeri 28 Sungai Raya Kubu Raya dapat meningkatkan aktivitas peserta didik, diterima. Kata kunci : Aktivitas, Pembelajaran PKn, Metode kerja Kelompok. Abstract: The problem in this research is an attempt to improve the learners' activitiesby using group workmethod in civic education subjects at the fourth grade students in the Elementary School28 Sungai Raya Kubu Raya. This research method is descriptive, in classroom action research, and the nature of this research is qualitative research, the research subjects are teacher and learners elementary school fourth grade students in the Elementary School 28 Sungai Raya Kubu Raya which consisted of21 people in whole. The techniques used in this researchwere the technique of direct observation, documentary technique, and data collection tool were used as observation guidelines. The result based on observation by using group workmethod had improvedlearners' activities. This shows that the hypothesis that stated the applicationgroup workmethod in civic educationlessons at the fourth grade in the Elementary School 28Sungai Raya Kubu Raya can improve learners' activities, accepted. Keywords: Civic Education, Group Work Method.
Application of Artificial Neural Network and Gray Level Co-occurrence Matrix to detect blood glucose levels through the skin of the hands. Umar, Usman; Syarif, Syafruddin; Nurtanio, Ingrid; Indrabayu, Indrabayu
Jurnal Teknologi Elekterika Vol. 19 No. 2 (2022): Nopember
Publisher : Jurusan Teknik Elektro Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v6i2.3756

Abstract

Increased glucose in the blood can cause a buildup so that it cannot be absorbed by all of the body's cells, this problem can cause various disorders in the body's organs. To avoid problems, it is necessary to check the blood glucose level regularly. Monitoring blood sugar levels is currently still using invasive techniques that are painful, non-invasive monitoring is needed. This study develops a non-invasive method to predict blood glucose through image processing. For investigation, several invasive images and glucose levels were taken. Types of samples based on age classification, 20-60 years. For accuracy and simple analysis, 37 images of participants as volunteers, samples were evaluated and investigated under the gray level co-occurrence matrix (GLCM). In this study, an artificial neural network (ANN) was used for all training and hand texture testing to detect glucose levels. The performance of this model is evaluated using Root Mean Square Error (RMSE) and correlation coefficient (r). Clarke Error Grid Analysis (EGA) variance was used in this investigation to determine the accuracy of the method. The results showed that the RMSE was close to the standard value, the regression coefficient was 0.95, and the Clarke EGA analysis: 81.08 % was in the A zone. So that the blood glucose prediction model using the GLCM-ANN method is feasible to apply.
Simulation Model Design of VHF Omni-Directional Range (VOR) Based on Microcontroller Tristiantoro, Roby; Umar, Usman; Alyah, Risnawaty
Jurnal Teknologi Elekterika Vol. 21 No. 1 (2024)
Publisher : Jurusan Teknik Elektro Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/elekterika.v21i1.4754

Abstract

The process of giving directional information to assist airplanes in making an accurate landing at the airport of destination is known as aviation navigation. The VHF Omnidirectional Range is a crucial navigation tool for guiding planes to the airport (VOR). Since it costs a lot of money to learn how to fly an airplane, a VOR simulator was developed that can mimic the movement of an aircraft passing through the VOR. The simulation that was produced is a prototype that sends and receives signals to the aircraft utilizing an antenna and microcontroller as supporting hardware. The VOR/DME flight navigation system is constructed in this study using mathematical modeling; a formulation representing the essential features of the system is expressed as a set of connected variables. The ESP32 module that powers the system serves as a DME by sending out Bluetooth radio signals. where one ESP32 module serves as a DME object (moving DME) and three ESP32 modules serve as DME stations (ground DME). Information on the distance between the DME station and the DME object will be communicated using the MQTT protocol, and this data will be processed using the trilateration method to predict the location and movement of the DME object. The measurement accuracy at DME station 1, DME station 2, and DME station 3 are 99.52%, 99.92%, and 99.98% respectively. The enhanced capabilities to estimate the position of objects observed from different directions or omni-directionally on a two-dimensional scale are made possible by the performance results of combining the performance of three ESP32 devices as Distance Measurement Equipment (DME). 
Pemantauan Kadar Asam Urat Non Invasive Real Time Menggunakan Sensor Near Infrared Umar, Usman; Alyah, Risnawaty
Lontara Journal of Health Science and Technology Vol. 1 No. 1 (2020): Ilmu dan Teknologi Kesehatan
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Politeknik Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53861/lontarariset.v1i1.35

Abstract

Gout or gout arthritis is a disease caused by the accumulation of monosodium uric crystals in the body. Uric acid is the result of the final metabolism of purines, which is a component of nucleic acids found in the body's cell nucleus. Increased uric acid can cause disturbances in the human body such as feelings of pain. The standard system used to measure uric acid levels in the blood, in general, is an invasive system that uses blood samples and is performed in clinics, health centers, and hospitals at a high cost. This research aims to develop a non-invasive system measuring gout using Near Infrared (NIR) sensor with 940 nm LED and Photodiode as a detector at a wavelength range of 600-1300 nm. The method of developing this tool begins with the stages, conducting a literature study resulting in tool design and tool making as well as tool validation by comparing invasive and non-invasive techniques. The results of this study produce a simple gout monitoring tool with an error value of 4% and low cost and easy to use. Analysis of the results of the tests using analysis of variance P-value> 0.05 and the t-test P (T <= t) 0.45> ? shows that the tool designed can be used to monitor gout.
Analisa Keakuratan Kadar Glukosa Darah Menggunakan Clarke-Error Grid Analisis pada Alat Ukur Non-invasive menggunakan Sensor Photoacoustic Umar, Usman; Alyah, Risnawaty; Amin, Imran
Lontara Journal of Health Science and Technology Vol. 1 No. 2 (2020): Ilmu dan Teknologi Kesehatan
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Politeknik Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53861/lontarariset.v1i2.80

Abstract

Blood glucose is a very important element in the human body, but if it is deficient or excessive, it can cause chronic disease that can lead to death. To prevent this, it is necessary to monitor cholesterol and blood glucose levels regularly, at this time the tool for measuring blood glucose levels is still an invasive method by taking a blood sample at the fingertip by injuring it. This study aims to develop a non-invasive blood glucose measuring device using a Photoacoustic Spectroscopy sensor in the range of values from a laser pulse source (? = 650 nm) which can detect glucose signals in the blood. The method of developing this research is by designing a non-invasive measuring instrument and measuring blood glucose levels in male and female participants to create a linearity equation between blood glucose levels and the output voltage from the sensor, then mathematically obtained a polynominal equation to convert the voltage to values. blood glucose level. Validation of measuring instruments designed by comparing invasive measuring instruments as a reference, using the Clarke EGA to determine accuracy based on the classification of values of blood glucose and blood cholesterol levels based on reference. The results of the Clarke EGA analysis show that all measurement data is in Zone A so that the measuring instrument with a photoacoustic sensor can be accepted.
Desain Alat Ukur Kadar Asam Urat Non-Invasive Dengan Sensor Near Infrared Umar, Usman; Hasmah, Hasmah; Alyah, Risnawaty; Syam, Anita Nur
Lontara Journal of Health Science and Technology Vol. 2 No. 2 (2021): Ilmu dan Teknologi Kesehatan
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Politeknik Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53861/lontarariset.v2i2.217

Abstract

Gout disease or commonly known as gout arthritis is a disease caused by the accumulation of monosodium urate crystals in the body. Monitoring blood uric acid levels is currently still using invasive techniques by taking blood samples to be included in the test strip, this invasive technique measurement requires money and time to come to health clinics so that many people cannot monitor blood uric acid levels on a regular basis. This study aims to develop a measuring instrument for monitoring blood uric acid levels using sensors by utilizing the absorption and reflectance of infrared rays so that gout sufferers and other individuals can monitor blood uric acid levels regularly and are easy to use. The method of developing non-invasive techniques focuses on monitoring blood uric acid levels using a NIR sensor with an IR LED with a wavelength of 940 nm as a transmitter and a photodiode as a detector at a wavelength of 700-1300 nm and a microcontroller as a minimum system for control. The first stage is measuring uric acid levels with invasive techniques on participants and at the same time measuring voltages with sensors, the results with invasive techniques are correlated with sensor output voltages to obtain non-linear equations in polynomial form, for conversion programs on the microcontroller. The second stage is measuring uric acid levels with invasive techniques and invasive measurements on participants at the same time. Both monitoring results were analyzed by simple ANOVA statistics and calculated SEP and RMSE to determine the accuracy of the prediction equation and its accuracy value.
Rancang Bangun Timbangan Otomatis Granula Obat Yang Dilengkapi Chamber Berbasis Arduino Uno Hasmah, Hasmah; Alyah, Risnawaty; Umar, Usman; Fatimang, Sitti; Dandi, LD Muh
Lontara Journal of Health Science and Technology Vol. 4 No. 1 (2023): Ilmu dan Teknologi Kesehatan
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Politeknik Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53861/lontarariset.v4i1.328

Abstract

The terms granule and granulation are familiar terms in the pharmaceutical field. Granulation activities cannot be separated from the weighing process. Granules are lumps of smaller particles with an uneven shape that become like a single larger particle. In general, pharmacists still use analytical balances to weigh. Weighing using an analytical balance tends to be inefficient because it takes a long time. In this study, a weighing system was designed with the function of automatically weighing drug granules and equipped with a container to accommodate the granules so that there is no need to manually load the granules onto the scales. The purpose of designing this tool is to make it easier for pharmacists to weigh drugs during granulation and make drug preparations. The design of this tool uses a load cell sensor, a servo motor to open and close the flow rate of drug granules from the container automatically, and a DC motor to help accelerate the flow rate of drug granules to the container, which is detected by the load cell sensor. Implementation of the results of this study can be used by laboratory personnel to weigh chemical substances in the form of powders and pharmacists to make it easier to weigh medicine granules. The results of the readings from the automatic weighing device are compared with the results from digital scales, which show an average deviation of 40%.
ALAT TERAPI VITILIGO DENGAN ULTRA VIOLET- B BERBASIS MIKROKONTROLLER ARDUINO Umar, Usman
Jurnal INSTEK (Informatika Sains dan Teknologi) Vol 2 No 2 (2017): Volume 2, Nomor 2, oktober 2017
Publisher : Department of Informatics Engineering, Faculty of Science and Technology, Universitas Islam Negeri Alauddin, Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1127.734 KB) | DOI: 10.24252/instek.v2i2.4019

Abstract

Vitiligo adalah penyakit kulit didapat yang ditandai dengan lesi putih yang tidak berpigmen di kulit karena kehilangan fungsi dari melanosit. Prevalensi vitiligo cukup tinggi, yaitu berkisar antara 0.1-2 % dari seluruh penduduk dunia. Penyakit juga dapat terjadi sejak lahir sampai usia lanjut dengan frekuensi tertinggi (50% dari kasus) pada usia 10–30 tahun. Terapi vitiligo sendiri sampai saat ini masih kurang memuaskan. Tabir surya dan kosmetik covermask bisa menjadi pilihan terapi yang murah dan mudah serta dapat digunakan oleh pasien sendiri dibanding dengan terapi lainnya,Tujuan penelitian ini sebagai pengembangan teknologi tepat guna dengan menggunakan sistem automatisasi dan pengembangan teknologi kesehatan khsusnya dibidang  terapi kesehatan dengan membuat sebuah alat terapi vitiligo dengan menggunakan lampu UVB sebagai media terapi dan melakukan evaluasi dampak penggunaan sinar UVB pada penderita vitiligo. Metodologi  penelitian ini melakukan study literatur, dan merancang  alat terapi Vitiligo menggunakan Ultra Violet B (UVB) yang dapat bekerja automatis dengan menggunakan Mikrokontroller Arduino dengan pengaturan  waktu  sesuai dengan  keinginan pengguna Hasil penelitian ini setelah dilakukan pengujian alat tingkat kesalahan alat 1,77%, dan tingkat kepuasan terhapat penggunaan alat pada beberapa pasien menunujkkan hasil yang baik. Kata Kunci. Terapi, Vitiligo, Ultra Violet B, Mikrokontroller Arduino
PEMANTAUAN HEMOGLOBIN DARAH DENGAN NON-INVASIVE MENGGUNAKAN SENSOR NEAR INFRARED LED IR 940NM UMAR, USMAN; ALYAH, RISNAWATY
Jurnal INSTEK (Informatika Sains dan Teknologi) Vol 5 No 1 (2020): APRIL
Publisher : Department of Informatics Engineering, Faculty of Science and Technology, Universitas Islam Negeri Alauddin, Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (484.142 KB) | DOI: 10.24252/instek.v5i1.13690

Abstract

Kandungan hemoglobin umumnya digunakan dalam analisis klinis dalam mendiagnosis anemia, mengidentifikasi perdarahan, dan mengelola transfusi sel darah merah.. Penelitian ini bertujuan untuk mengembangkan alat ukur hemoglobin darah sistem noninvasif. Sistem noninvasif ini menggunakan sensor Near Infrared (NIR) dengan LED dan Photodiodes dengan panjang gelombang 940 nm. Metode pengembangan alat ini dengan tahapan, antara lain, persiapan pembuatan alat dengan melakukan studi literatur menghasilkan model dan pembuatan alat serta alat pengujian. dengan membandingkan teknik invasif dan non-invasif. Hasil penelitian ini menghasilkan alat ukur hemoglobin yang sederhana, mudah digunakan dan tanpa mengambil sampel darah untuk secara rutin mengukur hemoglobin dengan biaya rendah. Analisis hasil pegujian dengan menggunakan analysis varian dan uji-t yang menunjukkan bahwa alat yang didesain dapat digunakan untuk memantau hemoglobin darah...Kata Kunci:  Hemoglobin, Invasive .non-invasive, Sensor, ANOVA
Co-Authors ALYAH, RISNAWATY Amin, Imran Dandi, LD Muh fatimang, sitti Hasmah Hasmah, Hasmah Hery Kresnady Indrabayu Indrabayu Ingrid Nurtanio K. Y. Margiati Syafruddin Syarif Syam, Anita Nur TRISTIANTORO, ROBY