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All Journal MATICS : Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Makara Journal of Science
Herman Tolle, Herman
Universitas Brawijaya
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Perancangan Decision Support System Penilaian Kinerja Dosen Berdasarkan Penilaian Prestasi Kerja Pegawai dan Beban Kinerja Dosen Ramadhan, Rizal Furqan; Tolle, Herman; Muslim, Muhammad Aziz
MATICS Vol 8, No 2 (2016): MATICS
Publisher : Department of Informatics Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (629.739 KB) | DOI: 10.18860/mat.v8i2.3555

Abstract

The lecturer is one of the essentialcomponents in the Higher Education system. Performanceassessment of lecturer needs to be conducted to measurethe lecturer capability based on the Tri Darma’s HigherEducation concept. Related to the nowadays technologydevelopment, to conduct performance assessment oflecturer can use the Decision Support System based onseveral criteria as the assessment material. The providedcriteria in this paper seem to be the obtained criteria fromP2KP and BKD component. P2KP is performanceassessment of lecturer under the Badan KepegawaianNegara (BKN) supervision. Meanwhile BKD isperformance assessment of lecturer under the DIKTIsupervision. The lecturer criteria are taken from those twocomponents because the lecturers’ status cannot beseparated from the officer under BKN and educator underthe DIKTI support. It is expected that the criteria comingfrom both components integration will be able to produceperformance assessment of lecturer objectively. Themethod to proceed the assessment was Weighted Product(WP). The examined data of the lecturers were theBrawijaya University lecturers’ data. The finalexamination data was conducted by taking the datarandomly from 20 Brawijaya University lecturers. Thefinal output from this Decision Support System is thelecturers which are selected from three categories, whichare, less, normal, and good. It is expected that DecisionSupport System is able to categorize the standard eligiblelecturer (Normal/medium category), and the lecturersurpassing the standard (good category).
Educational Media Design for Learning Basic Programming in Branching Control Structure Material Using Problem-Posing Learning Model Syahidi, Aulia Akhrian; Tolle, Herman; Supianto, Ahmad Afif; Hirashima, Tsukasa
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vol 4, No 4, November 2019
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (63.172 KB) | DOI: 10.22219/kinetik.v4i4.803

Abstract

Basic programming is one subject that tends to be difficult for students to learn. Along with the development of technology, several researchers have provided solutions to solve this problem, by developing educational games, educational media, interactive learning media, and other auxiliary media. However, on average they have not used or adhered to the syntax of various existing learning models. This study focuses on designing educational media that uses the problem-posing learning model to study the material of branching control structures in basic programming learning which is recommended as a learning medium for vocational high school students. Educational media named TOLSYASUPI-EduMed. We use the highest type of research and development (R&D), the level 4 that we adopted to be adapted into a number of steps that are in line with the needs of this research area. Observation techniques are used as a form of generative research which is a type of user experience research, to explore information before designing a product/application. The side that we highlight here is how the form of educational media design by following the syntax of the problem-posing learning model. Then do an A/B testing which is assessed by experts to choose the best design with results that are type B designs with a percentage of 90.9%. We also state the analysis of the functional aspects of educational media to strengthen the validity of this design idea.
Microfluidic Paper-Based Analytical Device (μPAD) for Determining Hydroquinone in Facial Whitening Cream using Phloroglucinol Reagent Sulistyarti, Hermin; Puspitaloka, Paradhita Ayu; Putra, Boyfannie Ivan; Retnowati, Rurini; Tolle, Herman
Makara Journal of Science
Publisher : UI Scholars Hub

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Abstract

A microfluidic paper-based analytical device (µPAD) is developed in this work to analyze hydroquinone in facial whitening creams using phloroglucinol. The µPAD features a hydrophobic barrier for detection and was fabricated using a wax printer with Whatman chromatographic paper. Detection was achieved by colorimetry based on the formation of an orange hydroquinone–phloroglucinol complex. The colored reaction product formed on the detection zone of the µPAD was scanned, and the images obtained were processed with Image-J software to determine their color intensity (RGB value). Optimization of the process conditions was conducted to achieve sensitive measurements. The optimum conditions yielding maximum sensitivity included a reagent addition sequence of phloroglucinol à NaOH à sample (hydroquinone), 1 µL of 0.5% phloroglucinol, 1 M NaOH, and 10-minute reaction. Under optimal conditions, the µPAD produced two linear calibration curves for hydroquinone at concentrations of 10–100 mg/L (R2 = 0.9979) and 250–1000 mg/L (R2 = 0.9991). The method demonstrated very good selectivity for the target analyte in the presence of propylene glycol and resorcinol with satisfactory validity and average recovery close to 100%. The proposed µPAD is a very simple and inexpensive technique for hydroquinone analysis and could be applied to cosmetics samples with satisfactory results.
Co-Authors Ahmad Afif Supianto Hermin Sulistyarti Hirashima, Tsukasa Muhammad Aziz Muslim Onny Setyawati Puspitaloka, Paradhita Ayu Putra, Boyfannie Ivan Ramadhan, Rizal Furqan Rurini Retnowati Syahidi, Aulia Akhrian W., Rieke Adriati