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Journal : MIX : Jurnal Ilmiah Manajemen

PENGARUH SERTIFIKASI SISTEM MANAJEMEN LINGKUNGAN ISO 14001 PADA KINERJA PERUSAHAAN Zeffa Aprilasani; Chairil Abdini Abidin Said; Tri Edhi Budhi Soesilo; Adis Imam Munandar
MIX: JURNAL ILMIAH MANAJEMEN Vol 7, No 2 (2017): MIX: Jurnal Ilmiah Manajemen
Publisher : Universitas Mercu Buana

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Abstract. Various studies revealed that ISO 14001 is an integrated environmentalmanagement system which are considered to be capable for improving firms‟environmental and financial performance. This study aims to analyze the effect of ISO14001 Environmental Management System certification on firm‟s environmental andfinancial performance. The samples of the research were ISO 14001 certified firmswhich listed in Indonesia Stock Exchange. Yearly data were collected for the period of2007-2015. The research employed multivariate data panel regression as the mainmethod. The results showed there is no impact from ISO 14001 certification towardsenvironmental performace and no solid evidence that ISO 14001 has an effect on thefinancial performance. In addition, there is an indication that older firms (over 30 yearsold) tend to pursue ISO 14001 certification based on firm‟s characteristics in thesamples.
VOLATILITAS HARGA KOMODITAS TIMAH Adis Imam Munandar; Hermanto Siregar; Trias Andati; Lukytawati Anggraeni
MIX: JURNAL ILMIAH MANAJEMEN Vol 6, No 2 (2016): MIX: Jurnal Ilmiah Manajemen
Publisher : Universitas Mercu Buana

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Abstract. The aim of this research is to analyse the factors which influence the pricevolatility of tin commodity. Monthly basis data were collected from 1990 to 2015. Weemployed ARCH-GARCH models and verified by interview with tin expert. Theresults showed that model EGARCH (1,1,1) is the best model to explain the pricevolatility of tin commodity. Changing factors from crude oil price, copper price, leadprice and T-Bill 3M were significantly affecting volatility in tin price. Experts believethe high volatility from 2001 to 2015 led to the difficulties in developing ofdownstream tin industry in Indonesia.Keyword: ARCH-GARCH, Price, Tin, VolatilityAbstract. Tujuan penelitian menganalisis faktor-faktor yang mempengaruhi volatilitasharga komoditas timah. Data yang digunakan bersifat bulanan dari tahun 1990 hinggatahun 2015. Metode penelitian menggunakan ARCH-GARCH model dan verfikasidengan interview pakar timah. Hasil penelitian menunjukkan model EGARCH (1,1,1)merupakan model terbaik menjelaskan volatilitas harga komoditas timah. Faktorperubahan harga minyak mentah, perubahan harga tembaga, perubahan harga timbaldan perubahan T-Bill 3M secara signifikan mempengaruhi volatilitas perubahan hargatimah. Pakar berpendapat volatilitas tinggi sejak tahun 2001 hingga 2015 menyebabkanindustri hilir komoditas timah sulit berkembang di Indonesia.Kata kunci: ARCH-GARCH, Harga, Timah, Volatilitas.