Judul: Strategi Pengelolaan Limbah Cair Industri Pengolahan Ikan di Pelabuhan Perikanan Nusantara Tanjungpandan
Abstrak: Pelabuhan Perikanan Nusantara (PPN) Tanjungpandan belum memiliki Instalasi Pengolahan Air Limbah (IPAL) yang menyebabkan industri pengolahan ikan yang ada di dalam kawasan pelabuhan membuang limbah cair hasil produksi langsung ke kolam pelabuhan. Kondisi tersebut menyebabkan kolam pelabuhan terindikasi telah terjadi pencemaran lingkungan perairan. Penelitian ini bertujuan untuk menghitung status mutu air pada kolam pelabuhan, mengidentifikasi pengelolaan limbah cair industri pengolahan ikan, dan merumuskan strategi pengelolaan limbah cair industri pengolahan ikan. Data kualitas air diperoleh dari dokumen hasil pengukuran kualitas air milik PPN Tanjungpandan sedangkan data penilaian pengelolaan limbah cair dikumpulkan melalui wawancara dengan kuesioner. Analisis STORET, analisis deskriptif, analisis SWOT, dan analisis USG digunakan dalam penelitian ini. Hasil penelitian menunjukkan bahwa status mutu air pada kolam pelabuhan di PPN Tanjungpandan memperoleh nilai indeks sebesar -40. Nilai indeks tersebut menunjukkan status mutu air termasuk klasifikasi tercemar berat. Pengelolaan limbah cair industri pengolahan ikan dinilai menggunakan tiga parameter sebagai indikator penilaian dengan total skor yang diperoleh ialah tujuh yang artinya pengelolaan limbah cair industri di PPN Tanjungpandan termasuk dalam ketegori buruk. Strategi pengelolaan limbah cair industri pengolahan ikan di PPN Tanjungpandan terdiri dari delapan strategi. Strategi menyediakan fasilitas IPAL terpadu agar industri dapat mengolah limbah cair hasil kegiatan produksi menjadi strategi prioritas. Kata kunci: industri pengolahan ikan, limbah cair, pencemaran lingkungan, PPN Tanjungpandan, strategi, The Tanjungpandan Fishing Port (TFP) does not yet have a Wastewater Treatment Plant (WTP), which causes the fish processing industry in the port area to dispose of the liquid waste produced directly into the port basin. This condition causes port basin to have indicated that there pollution of the aquatic environment. This study aims to measure the status of water quality in port ponds, identify wastewater management from the fish processing industry, and formulate a strategy for managing liquid waste from the fish processing industry. Water quality data was obtained from the water quality measurement document belonging to TFP, while data on liquid waste management assessment was collected through interviews with questionnaires. STORET analysis, descriptive analysis, SWOT analysis, and USG analysis were used in this study. The results showed that the water quality status in the port pool at TFP obtained an index value of -40. The index value indicates the status of water quality included in the classification as heavily polluted. The assessment of the wastewater management of the fish processing industry uses three parameters for the assessment indicator with a total score of seven, which means that the management of industrial wastewater at TFP is in a bad category. The strategy for managing liquid waste from the fish processing industry at TFP consists of eight strategies. Providing integrated IPAL facilities so that the industry can process liquid waste resulting from production activities is a priority strategy. Keywords: fish processing industry, liquid waste, strategy, environmental pollution, Tanjungpandan Fishing Port, strategy
Keyword: fish processing industry, liquid wate, strategy, enviromental pollution, Tanjungpandan Fishing Port

Judul: Pengelolaan Limbah Cair Industri Perikanan di Pelabuhan Perikanan Pantai Tegalsari, Provinsi Jawa Tengah
Abstrak: Perairan Pelabuhan Perikanan Pantai (PPP) Tegalsari mengalami pencemaran yang disebabkan oleh limbah cair dari industri perikanan tanpa proses pengolahan. Penelitian ini bertujuan untuk membandingkan kualitas limbah cair dan mutu air laut di PPP Tegalsari dengan baku mutu yang berlaku, mengidentifikasi eksisting pengelolaan limbah cair di PPP Tegalsari, dan merumuskan strategi pengelolaan limbah cair industri perikanan di PPP Tegalsari. Data dianalisis menggunakan analisis komparatif dengan baku mutu PERMEN LH No.05 Tahun 2014, analisis deskriptif, metode STORET (Storage and Retrieval of Water Quality Data System), SWOT (Strength, Weakness, Opportunities, Threats) dan USG (Urgency, Seriousness, Growth). Hasil penelitian menunjukkan bahwa kualias air limbah melebihi baku mutu dengan memperoleh skor -50 sehingga status mutu air laut di PPP Tegalsari dalam kategori tercemar berat. Pengelolaan limbah cair industri perikanan di PPP Tegalsari termasuk dalam ketegori buruk. Strategi pengelolaan limbah cair industri perikanan di PPP Tegalsari terdiri dari delapan strategi., The waters of the Tegalsari Coastal Fishing Port (PPP) are experiencing pollution caused by liquid waste from the fishing industry without processing. This research aims to compare the quality of liquid waste and sea water quality at PPP Tegalsari with applicable quality standards, identify existing liquid waste management at PPP Tegalsari, and formulate a strategy for managing liquid waste for the fishing industry at PPP Tegalsari. Data were analyzed using comparative analysis with quality standards PERMEN LH No.05 of 2014, descriptive analysis, STORET (Storage and Retrieval of Water Quality Data System), SWOT (Strength, Weakness, Opportunities, Threats) and USG (Urgency, Seriousness, Growth) methods. The research results show that the quality of waste water exceeds the quality standard by obtaining a score of -50 so that the quality status of sea water at PPP Tegalsari is in the heavily polluted category. Management of liquid waste from the fishing industry at PPP Tegalsari is included in the bad category. The fishing industry liquid waste management strategy at PPP Tegalsari consists of eight strategies.
Keyword: fishing industry, liquid waste, pollution, Tegalsari fishing port, water quality

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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