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All Journal Jurnal Informatika Jurnal Nuansa: Publikasi Ilmu Manajemen dan Ekonomi Syariah
Maruli Tua Siahaan
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Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance

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RANCANG BANGUN SISTEM PENDIAGNOSA PENYAKIT OSTEOPOROSIS PADA WANITA MENGGUNAKAN METODE FUZZY INFERENCE SISTEM TSUKAMOTO Septilia Arfida; Maruli Tua Siahaan
Jurnal Informatika Vol 16, No 1 (2016): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v16i1.941

Abstract

Osteopororsis is rotten bones, which is a disease that signed by the shortage of low bone mass, also bone micro arsitexture disorder and decreasing of bone tissue quality. Those signs causes bone fragility therefore it is easily broken. Osteoporosis can be detected by certain tool through radiology chek up. Because the tool is still limited and also the check up and the tool quite expensive, so the community do not understand the osteoporosis disease. The diagnose system application of osteoporosis at women uses Tsukamoto Fuzzy Inference System method. This method is choosen to do the diagnose of osteoporosis has 5 variables, such as age, activity, calsium, height, and weight. Each variable has 3 fuzzy group, from all group it is taken 27 fuzzy rules and then used in inference step. At inference step, it is searched the antecendent membership value (α) and diagnose score (z) from each rule. This system creates recommendation value which is the information of the diagnose of osteoporosis therefore it is able to know the type of osteoporosis that is suffered. Beside that it also gives the information of how to handling and treatment of osteoporosis. Key Words :Osteoporosis, Fuzzy Logic, Fuzzy Inference System Tsukamoto 
Analisis Gaya Kepemimpinan, Lingkungan Kerja dan Motivasi terhadap Kinerja Karyawan Melalui Komitmen Organisasi pada Industri Food and Beverage di Jakarta Maruli Tua Siahaan; Subarto Subarto; I Nyoman Marayasa
Jurnal Nuansa : Publikasi Ilmu Manajemen dan Ekonomi Syariah Vol. 4 No. 3 (2026): September: Jurnal Nuansa : Publikasi Ilmu Manajemen dan Ekonomi Syariah
Publisher : Asosiasi Riset Ilmu Manajemen Kewirausahaan dan Bisnis Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/nuansa.v4i3.2851

Abstract

This study aims to analyze the effects of leadership style, work environment, and motivation on employee performance through organizational commitment in Jakarta. The study is motivated by the importance of effective human resource management in the Food and Beverage industry to improve employee performance and maintain the quality of the company’s services. This research employed a quantitative method with a descriptive and causal approach. The study population consisted of 135 employees, and a saturated sampling technique was used, whereby all members of the population were included as respondents. Data were collected through questionnaires and analyzed using Structural Equation Modeling (SEM) based on Partial Least Squares (PLS) with the assistance of SmartPLS 4. The results showed that leadership style, work environment, and motivation had positive and significant effects on organizational commitment. Organizational commitment also had a positive and significant effect on employee performance. Regarding the direct effects, motivation had a positive and significant effect on employee performance, whereas leadership style and work environment did not have significant direct effects on employee performance. The results of the indirect-effect analysis demonstrated that organizational commitment positively and significantly mediated the effects of leadership style, work environment, and motivation on employee performance. These findings indicate that improving employee performance is not solely determined by motivation directly, but can also be achieved by strengthening organizational commitment, supported by effective leadership and a conducive work environment. Therefore, the company should strengthen organizational commitment by improving leadership quality, creating a supportive work environment, and continuously developing employee motivation.
Co-Authors I Nyoman Marayasa septilia arfida Subarto Subarto