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OPTIMASI ECONOMIC DISPATCH PADA UNIT PEMBANGKIT PLTU TANJUNG JATI B MENGGUNAKAN METODE SINE COSINE ALGORITHM Yulianto, Agam; Winardi, Bambang; Karnoto, Karnoto
Transient: Jurnal Ilmiah Teknik Elektro TRANSIENT, VOL. 6, NO. 4, DESEMBER 2017
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (880.71 KB) | DOI: 10.14710/transient.6.4.534-341

Abstract

Biaya pembangkitan energi listrik terbesar ada pada biaya bahan bakar. Diperlukan adanya penjadwalan operasi pembangkit untuk mendapatkan pengoperasian pembangkit yang optimal. Sine Cosine Algorthm (SCA) diusulkan sebagai metode penjadwalan ekonomis pada Pembangkit Listrik Tenaga Uap (PLTU) di Tanjung Jati B. Untuk melihat perfoma dari simulasi metode SCA maka metode ini dibandingkan dengan metode Lagrange Mulptiplier. Hasil simulasi optimasi metode SCA menunjukkan performa yang baik. Hasil simulasi identik dengan metode Lagrange Mulptiplier, sedangkan dalam perbandingan biaya operasi,optimasi metode SCA lebih hemat dibandingkan  dengan biaya operasi pembebanan PLTU Tanjung Jati B. Pada perbandingan 2 generator aktif  rata – rata penghematan sebesar 226,6527 $/Jam, selisih biaya terbesar pada daya 914 MW dengan selisih biaya 294,7016 $/Jam dan selisih biaya terkecil pada pembebanan 1289,1 MW dengan selisih biaya 48,0029 $/Jam. Pada perbandingan 3 generator penghematan rata-rata sebesar 244,4534 $/Jam, selisih biaya terbesar pada daya1756,8 MW dengan selisih biaya 404,1260 $/Jam dan selisih biaya terkecil pada pembebanan 1968,4 MW dengan selisih biaya 36,2246 $/Jam. Pada perbandingan 4 generator aktif  rata – rata penghematan sebesar 373.8583 $/Jam, selisih biaya terbesar pada pembebanan 2223 MW dengan selisih biaya 511,0109 $/Jam dan selisih biaya terkecil pada pembebanan 1735,1 MW dengan selisih biaya 213,0795 $/Jam.
PENGARUH OPINI AUDIT, REPUTASI AUDITOR DAN AUDIT DELAY TERHADAP MINAT INVESTASI Yulianto, Agam; Noegroho, Yefta Andi Kos
Jurnal Ilmiah Akuntansi Indonesia Vol 5, No 1 (2020): JIAI (JURNAL ILMIAH AKUNTANSI INDONESIA)
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jiai.v5i1.3354

Abstract

This study aims to look at the effect of Audit Opinion, Auditor Reputation and Audit Delay on investment interests, especially among students. This study will use primary data obtained through a questionnaire distributed directly to respondents during face-to-face capital market school courses and also through Google forms distributed via email to respondents who did not attend capital market school courses in the even semester of the 2019 school year / 2020 as a research instrument. Data collected through the questionnaire will then be processed using quantitative methods. The population in this study are active students who have already or are investing. Of the total population that matches the predetermined criteria, 100 data will be taken as samples to be processed. The collected data will be analyzed using the multiple linear regression method with the help of the Statistical Package for the Social Sciences application. Before the data was processed, the validity and reliability of the questionnaire was tested and also the classic assumption test to see the effect of the three independent variables on investment interest as the dependent variable used in this study. The results of this study indicate that the Auditor's Reputation does not influence the students' interest to invest. While the Audit Opinion and Audit Delay examined in this study have an influence on student investment interests.