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EVALUASI KETIDAKPASTIAN PENGUKURAN MULTI-UNSUR DALAM MINERAL ZIRKON DENGAN METODE ANALISIS AKTIVASI NEUTRON sukirno, Sukirno; Murniasih, Sri; Rosidi, Rosidi; Samin, Samin
Eksplorium Buletin Pusat Teknologi Bahan Galian Nuklir Vol 36, No 1 (2015): Vol 35, No 1 (2015): Mei 2015
Publisher : Pusat Teknologi Bahan Galian Nuklir - BATAN

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Evaluasi analisis multi-unsur yang disertai perhitungan ketidakpastian unsur pada mineral zirkon yang berasal dari Sampit, Kalimantan Tengah dan Pulau Bangka telah dilakukan dengan metode Analisis Aktivasi Neutron (AAN). Tujuan penelitian ini adalah menentukan komposisi dan nilai ketidakpastian multi-unsur dalam mineral zirkon untuk memenuhi persyaratan ISO/IEC guide 17025-2008 yang telah diterapkan pada laboratorium AAN. Analisis menggunakan spektrometri gamma dengan detektor HPGe menghasilkan 21 unsur terdeteksi yang dibagi menjadi tiga kelompok (mayor, minor, dan kelumit). Evaluasi ketidakpastian pengukuran perlu dilakukan untuk meningkatkan kualitas dan tingkat kepercayaan hasil analisis. Hasil pengujian tidak akan bermakna tanpa disertai perhitungan ketidakpastian. Oleh karena itu, dilakukan evaluasi nilai perhitungan ketidakpastian pada hasil analisis semua unsur yang terkandung dalam mineral zirkon. Hasil analisis kuantitatif tertinggi adalah zirkonium (Zr) dengan konsentrasi 38,986% dan mempunyai nilai ketidakpastian 0,33% sehingga nilai konsentrasi nyata adalah 38,986Â±0,33%, dalam oksida (ZrO2) mempunyai konsentrasi 52,661Â±0,45%. Unsur stibium (Sb) adalah unsur yang terdeteksi paling rendah dengan nilai konsentrasi dan ketidakpastian adalah 7Â±0,3 Î¼g/g sedangkan dalam oksida (Sb2O3) mempunyai konsentrasi 17Â±0,9 Î¼g/g. Komposisi oksida dan bahan kimia dalam mineral pasir zirkon yang lebih signifikan berasal dari Sampit dengan kandungan ZrO2+HfO2 (53-55%), F2O3 (5-6%), TiO2 (13-14%), Al2O3 (1,5-2%) dan SiO2. Unsur Si (SiO2) tidak dapat ditentukan dengan metode AAN sebab tampang lintang Si sangat kecil.Kata kunci: evaluasi unsur, ketidakpastian, komposisi oksida, AAN

IMPLIKASI KINERJA DAN INDEPENDENSI DEWAN DIREKSI TERHADAP KECENDERUNGAN PERUBAHAN STRATEGI PERUSAHAAN Samin, Samin; Wijaya, Satria Yudhia
EQUITY: Jurnal Ekonomi, Manajemen, Akuntansi Vol 18, No 2 (2015): EQUITY
Publisher : Fakultas Ekonomi dan Bisnis UPN "Veteran" Jakarta

This study examined the implications of the firm financial performance and composition of indepedencies the board of directors tendency to change strategy. Firm financial performance parameters used in this research include : total assets, profitability, and leverage, while measuring changes in the company’s strategy is the implementation of low cost and differentiation. The sample of this research consisted of 26 companies in the Indonesia Stock Market with the data period 2009-2012. Hypothesis testing techniques using logistic regression. When company suffered in poor performance become possible change of the board of directors. Company will replace the director with independent directors. These changes are believed to change the company’s strategy. The result showed a significant relationship between the independence of the board of directors with financial performance ((r = 0.311, p = 0.025) that the high performance associated with the independence of the board of directors. Result for logistic regression is that the predictions sign on IND_BOD is ppropriate that the presence of independent directors lead chages into a differentiation strategy. However this is not statistically ignificant.

PENGARUH LABA PER SAHAM, NILAI BUKU EKUITAS DAN ARUS KAS OPERASI TERHADAP HARGA SAHAM Puspita, Yumna; samin, Samin
EQUITY: Jurnal Ekonomi, Manajemen, Akuntansi Vol 20, No 1 (2017): EQUITY
Publisher : Fakultas Ekonomi dan Bisnis UPN "Veteran" Jakarta

This study was conducted to examine the effect of variable Earning Per Share, Book Value of Equity, and Cash Flow of Operation on the Stock Price in manufacture sector listed on the Indonesia Stock Exchange (IDX) during the period 2012-2014. The data obtained in this study were published financial statements. The population in this study amounted to 44 companies and 132 samples obtained from 44 companies during the 3 years of observation. Techniques in sampling using purposive sampling method. The analysis technique used is multiple linear regression to examine the effect between dependent and independent variables and hypothesis testing using the simultan test and parsial test with a confidence level of 5%. The results showed that simultaneous Earning Per Share, Book Value of Equity, and Cash Flow of Operation have a significant effect on the Stock Price. While the partial test results showed that Earning Per Share, book value of Equity and Cash Flow of Operation have significant effect on the Stock Price.

PENGARUH DEWAN KOMISARIS, LEVERAGE, DAN STRUKTUR KEPEMILIKAN TERHADAP PENGUNGKAPAN ENTERPRISE RISK MANAGEMENT (ERM) Cecasmi, Jetmi Ade; samin, Samin
EQUITY: Jurnal Ekonomi, Manajemen, Akuntansi Vol 20, No 2 (2017): EQUITY
Publisher : Fakultas Ekonomi dan Bisnis UPN "Veteran" Jakarta

The purpose of this study was to examine the influence of Board of Commissioner, Leverage, and Ownership Structure on the Enterprise Risk Management disclosure of banking firm listed in Indonesian Stock Exchange for the period from 2013 to 2015. Sampling technique using purposive sampling (purposive sampling method). The sampel used in this study is a banking company that meets the criteriaas set out in this study to obtain 21 banking. The data obtained derived from the annualreport and financial report of the banks publishe. The analysis technique used in this research is multiple linear regression to test the classical assumption first. The result showed that the Board of Commissioner have a significant influence on the Enterprise Risk Management Disclosure. Leverageand Ownership Structure is not significantly effects on Enterprise Risk Management Disclosure.

PENGARUH SKEPTISISME PROFESIONAL AUDITOR, KOMPETENSI, INDEPENDENSI DAN KOMPLEKSITAS AUDIT TERHADAP KUALITAS AUDIT Nugrahaeni, Suci; Samin, Samin; Nopiyanti, Anita
EQUITY: Jurnal Ekonomi, Manajemen, Akuntansi Vol 21, No 2 (2018): EQUITY
Publisher : Fakultas Ekonomi dan Bisnis UPN "Veteran" Jakarta

This study was conducted with the aim to examine the influence of The Auditor’s Professional Skepticism, Competence, Independence and Complexity of The Audit on Audit Quality. The sample used in this study is 70 auditor by using purposive sampling method. The analysis technique that used in this study is multiple linear regression with significance level of 5%. The results of this study indicate that the value of Adjusted R Square is 0.547 or 54,7% which means that the ability ofindependent variables namely the Auditor’s Professional Skepticism, Competence, Independence and Complexity Audit in explaining the dependent variable that is Audit Quality is 54,7% and the rest 45,3%is explained by other variables outside of that variables used in this study. The results of this study also show that (1) The Auditor’s Professional Skepticism has significant effect on Audit Qualitybecause it has a significance value lower than the level of significance of 5% that is equal to 0,002 or 0,2% (2) Competence has significant effect on Audit Quality because it has a significance value lower than the level of significance of 5% that is equal to 0,024 or 2,4% (3) Independence has no significant effect on Audit Quality because it has a significance value greater than the level of significance of 5% that is equal to 0,610 or 61% (4) Complexity of The Audit has no significant effect on Audit Quality because it has a significance value greater than the level of significance of 5% that is equal to 0,341 or 34,1%.

PENGARUH PROFITABILITAS, LEVERAGE DAN UKURAN PERUSAHAAN TERHADAP LAMA WAKTU LAPORAN AUDIT Putri, Syifa Tamara; Samin, Samin
EQUITY: Jurnal Ekonomi, Manajemen, Akuntansi Vol 19, No 1 (2016): EQUITY
Publisher : Fakultas Ekonomi dan Bisnis UPN "Veteran" Jakarta

This study aims to test and provide empirical the effect of profitability, leverage and firm size of the audit report lag. The population in this study is a sub company property and real estate sectors listed on the Indonesia Stock Exchange 2012-2014. Sample of 34 companies was selected by purposive sampling method. The data used in this study as much as 102 samples. This study uses several stage of calculation, using outlier test that is by converting the data into a standardized score or so-called z-score. After going through the process of outlier samples were chosen in this study to 93 samples. Analysis of the data using multiple linear regression with a significance level of 5% and determine the hypothesis used t test and f test. The results test showing that profitability, leverage and firm size are simultaneous positive and significant effect on audit report lag. The results test this study indicate that profitability has significance on audit report lag are partial. Meanwhile leverage and firm size has no significance on audit report lag

PENGARUH UKURAN PERUSAHAAN DAN KEPEMILIKAN INSTITUSIONAL TERHADAP KINERJA PERUSAHAAN DENGAN KEBIJAKAN HUTANG SEBAGAI VARIABEL INTERVENING Martawati, Esa; Samin, Samin
Ekonomi dan Bisnis Vol 2, No 2 (2015): Ekonomi dan Bisnis
Publisher : Fakultas Ekonomi dan Bisnis, Universitas Pembangunan Nasional Veteran Jakarta

This study aims to examines the effect of firm size and institutional ownership on company performance with debt policy as intervening variable in consumer goods company listed on the Indonesian Stock Exchange. The sample of this research amount 25 consumer goods company listed on the Indonesian Stock Exchange during the period 2008-2011 that were selected by using purposive sampling method. The data used are secondary data from financial statements published by the Indonesian Stock Exchange. The analysis technique used here is path analysis. The result of the research show firm size and institutional ownership simultaneously significant effect on debt policy. Partially, firm size has no significant effect on debt policy, while institutional ownership has a significant effect on debt policy. In addition, firm size, institutional ownership, and debt policy simultaneously significant effect on company performance. Partially, firm size and institutional ownership has a significant effect on company performance, whereas no significant effect on company performance is debt policy. There is not indirect effect between firm size and institutional ownership on company performance through debt policy as intervening variable.

PENGARUH PROFITABILITAS, STRUKTUR ASET, DAN LIKUIDITAS TERHADAP STRUKTUR MODAL Sari, Nita Puspita; Samin, Samin
Ekonomi dan Bisnis Vol 3, No 1 (2016): Ekonomi dan Bisnis
Publisher : Fakultas Ekonomi dan Bisnis, Universitas Pembangunan Nasional Veteran Jakarta

This study aims to determine the effect of Profitability, Asset Structure, Liquidity, and Capital Structure for the manufacturing company in Indonesia Stock Exchange 2010 - 2013. The study uses secondary data sources of the data derived by the Indonesia Stock Exchange with four years study period, namely 2010-2013. The population in this study a number of 40 companies manufacturing miscellaneous industry sectors listed on the Indonesia Stock Exchange period 2010-2013. Sampling was purposive sampling method with the provisions of these companies include financial statements for duration of the study period and has positive net income and then a total sample of 18 companies. Data analysis using classical assumption test, multiple linear regression analysis, t test, F test, and coefficient of determination, and profitability, asset structure, and liquidity as independent variabel. The data of this study are qualified classical assumption test and conformance tes models with adjusted R2 of 46,4%. Results of the analysis done of profitability, and liquidity strukturaset significant effect on the capital structure.

PERENCANAAN TEMPAT PEMROSESAN AKHIR SAMPAH DENGAN MENGGUNAKAN METODE SANITARY LANDFILL Samin, Samin; Sunarto, Sunarto; Rijalurrahman, Mohammad
Media Teknik Sipil Vol 15, No 2 (2017): Agustus
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Pertumbuhan jumlah penduduk dan kemajuan tingkat perekonomian di suatu kota mempengaruhi peningkatan jumlah sampah. Peningkatan jumlah sampah akan menimbulkan permasalahan pada lingkungan, proses akhir di TPA (Tempat Pemrosesan Akhir Sampah). TPA Randuagung adalah TPA yang aktif di Kabupaten Malang. Â Metode yang digunakan saat ini adalah open dumping. TPA Randuagung memiliki daerah cakupan pelayanan yang mencakup 4 Kecamatan antara lain Singosari, Lawang, Karangploso, dan Dau. Luas Lahan yang tersedia Â± 17,65 Ha. Sistem open dumping sudah tidak layak lagi untuk menjadi tempat pembuangan akhir sampah, maka dari itu perlu dilakukan pengembangan perencanaan TPA Randuagung menggunakan metode sanitary landfill. Perencanaan TPA Randuagung dengan sistem sanitary landfill meliputi: perencanaan area pembuangan sampah 60.678m2 (ada 3 Fase), dapat menampung sampah sampai dengan 10 tahun ke depan; Analisa stabilitas lereng sampah menggunakan metode fellenius dengan angka aman 1,61; perletakan pipa gas metan secara horizontal dan vertikal; perencanaan drainase; pemasangan pipa lindi menggunakan metode tulang ikan dengan diameter pipa yang berbeda-beda;kolam penampung sementara lindi dimensi dengan ukuran 25 m Ã— 21 m Ã— 5 m dan dengan debit air lindi 0,00984 m3/detik. Dan pengaliran lindi dilanjutkan ke area kolam IPAL (Instalasi Pengolahan Air Lindi) yang menggunakan 3 kolam, yaitu kolam stabilisasi, kolam aerasi dan kolam maturasi.

ANALISIS SISTEM DISTRIBUSI AIR BERSIH DAN PEMBUANGAN AIR LIMBAH GEDUNG NEO CONDOTEL BATU Samin, Samin; Setyono, Ernawan; Anugrah, Wisnu Tri
Media Teknik Sipil Vol 16, No 2 (2018): Agustus
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Sistem pendistribusian air bersih merupakan bagian yang sangat utama untuk pembangunan suatu gedung, terutama untuk hotel karena sistem pendistribusian air bersih yang baik dapat memberikan kenyamanan bagi para pengguna hotel. Tidak hanya pendistribusian air bersih, namun juga sistem pembuangan air limbah juga harus direncanakan dengan baik. Neo Condoel memiliki 7 lantai. Gedung ini dibangun di atas tanah seluas 2.575 m2. Apabila ditinjau dari SNI 03-7065-2005, suatu bangunan hotel diharuskan memiliki jaringan air bersih yang mampu melayani sedikitnya 250 liter/orang/hari untuk kebutuhan tamu hotel dan 120 lier/orang/hari untuk kebutuhan karyawan. Pada bangunan tinggi seperti hotel, tekanan air yang disyaratkan adalah kurang lebih sebesar 1 atm. Apabila tekanan air belum memenuhi syarat yang telah ditetapkan, maka dibutuhkanlah pompa booster agar kebutuhan tekanan air dapat dicapai.

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