Jumlah timbulan sampah domestik di Kabupaten Sumbawa Barat pada tahun 2018 sebesar 43.556,81Kg/per-hari (Dinas Lingkungan Hidup dan Kehutanan Provinsi NTB, 2018). Desa Tuananga merupakan salah satu desa yang berada di Kabupaten Sumbawa Barat, tepatnya di kecamatan Poto Tano. Desa Tuananga terletak di pedalaman sekitar pesisir pantai dan jauh dari jalan raya sehingga mempersulit truk pengangkut sampah masuk ke Desa Tuananga, yang menyebabkan sampah terus menumpuk di tempat pembuangan akhir yakni sungai. Hal ini mendorong penulis menjalankan program daur ulang sampah plastik untuk dijadikan barang yang berguna dan bernilai jual melalui program Kampung Lestari sebagai salah satu kegiatan dalam pelaksanaan Kuliah Kerja Nyata (KKN) Universitas Mataram. Produk yang kami hasilkan adalah meja belajar dan pot bunga yang berbahan dasar Plastik bekas. Bahan-bahan yang digunakan untuk memproduksi meja belajar dan pot antara lain: sampah plastik, resin, katalis, pipa besi, dan baut. Alat-alat yang digunakan antara lain: panci, kompor, cetak produk, dan pengaduk. Lokasi pembuatan produk terletak di Desa Tuananga Kecamatan Poto Tano, Kabupaten Sumbawa Barat, NTB dan lokasi pemasaran produk antara lain: Desa Tuananga, Pasar Seteluk, dan Buen Telu. Harga dari produk ini sangat terjangkau oleh kalangan yang ekonominya rendah. Strategi yang digunakan dalam pemasaran atau promosi produk secara online dengan menggunakan sosial media berupa Facebook dan endorse.
This study uses panel data, using multiple linear regression for statistical data processing. This study aims to analyze the effect of Working Capital Turnover (X1), Firm Size (X2), Liquidity (X3), Leverage (X4) on profitability (Y) in mining companies on the Indonesia Stock Exchange (BEI) 2015-2019. Statistical calculations produce a regression equation Y = -0.006571 + 0.000812X1 - 0.000143X2 + 0.036545X3 - 0.011253X4 + e. This study concludes first, Working Capital Turnover does not have a significant positive effect on profitability. Second, Firm Size does not have a significant negative effect on profitability. Third, liquidity has a significant positive effect on profitability. Fourth, Leverage does not have a significant positive effect on profitability of mining companies on the Indonesia Stock Exchange (IDX). Fifth, Working Capital Turnover, Firm Size, Liquidity, Leverage together, positively and significantly affect profitability (Y) in mining companies on the Indonesia Stock Exchange (IDX). The researcher gives the first suggestion, mining companies listed on the Indonesia Stock Exchange must maintain the stability of their financial performance, if necessary, increase their working capital, firm size, liquidity and leverage in order to maintain and increase the company's profitability. Second, shareholders of Mining Companies listed on the Indonesia Stock Exchange do not immediately withdraw their shares when the share price drops, because it is hoped that stability will not take too long and working capital, firm size, liquidity and leverage will increase again so that they can increase the
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