Judul: Manajemen Pemupukan Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Buatan, PT Inti Indosawit Subur, Kabupaten Pelalawan, Riau
Abstrak: Kelapa sawit merupakan komoditas perkebunan terbesar yang memiliki peran strategis dan potensial di Indonesia. Kegiatan magang dilaksanakan di Kebun Buatan, PT Inti Indosawit Subur, Kabupaten Pelalawan, Riau pada Januari hingga Mei 2023. Kegiatan magang terdiri dari aspek teknis dan manajerial dengan mengikuti kegiatan di lapangan pada budidaya kelapa sawit. Kegiatan magang bertujuan mempelajari dan menganalisis manajemen pemupukan tanaman kelapa sawit. Pengamatan yang dilakukan pada penerapan kaidah 5T (tepat jenis, tepat dosis, tepat cara, tepat waktu dan tepat tempat), dan ketepatan alat pemupukan. Hasil pengamatan menunjukkan bahwa manajemen pemupukan di Kebun Buatan sudah sesuai dengan standar yang telah ditetapkan oleh perusahaan dan menerapkan kriteria Indonesian Sustainable Palm Oil (ISPO) dan Roundtable on Sustainable Palm Oil (RSPO). Hal ini dapat dilihat dari seluruh aspek ketepatan mencapai nilai > 95%. Ketepatan alat pemupukan mencapai 100%. Perusahaan dalam pelaksanaan pemupukan telah sesuai dengan kriteria ISPO dan RSPO., Oil palm is the largest plantation commodity that has a strategic role and potential in Indonesia. Intership activites were carried out at the Buatan Estate, PT Inti Indosawit Subur, Pelalawan Regency, Riau on January to May 2023. Internship activities consist of technical, and managerial aspects by following oil palm cultivation in the field. The internship aims to study and analyze the fertilization management of oil palm plants. Observations were made on the application on the 5T rule (right type, right dose, right time, right method and right place), and the accuracy of fertilization tools. The observation results show that fertilization management in Buatan Estate is in accordance with the standards set by the company and comply with Indonesian Suistable Palm Oil (ISPO) and Roundtable on Sustainable Palm Oil (RSPO) criteria. The “5T” were observed in the range accuracy of > 95%. The accuracy of fertilization tools reached 100%. The company in implementing fertilization is in accordance with ISPO dan RSPO criteria.
Keyword: 5T rules, fertilization tools, ISPO, RSPO

Judul: Labour Management of Oil Palm Plantation (Elaeis guineensis Jacq.) at Buatan Estate PT. Inti Indosawit Subur, Pelalawan, Riau
Abstrak: Pengelolaan manajemen ketenagakerjaan menjadi salah satu kunci utama keberhasilan dalam mengelola perkebunan kelapa sawit. Kegiatan magang dilaksanakan di PT. Inti Indosawit Subur, Kabupaten Pelalawan, Riau yang dilaksanakan pada bulan Januari hingga bulan Mei 2023. Kegiatan magang dilaksanakan secara langsung di lapangan sebagai pekerja harian lepas (PHL), pendamping mandor, dan pendamping asisten untuk mempelajari aspek teknis dan manajerial. Manajemen tenaga kerja menjadi salah satu aspek khusus yang diamati penulis dalam kegiatan magang berlangsung. Dalam perusahaan perkebunan, tenaga kerja panen menjadi faktor utama yang dapat menentukan kualitas serta kuantitas produksi yang diperoleh perusahaan perkebunan. Aspek khusus yang diamati yakni adanya pengorganisasian tenaga kerja, prestasi kerja, disiplin dan kualitas kerja dan penerapan Indonesian Sustainable Palm Oil (ISPO). Perusahaan menerapkan prinsip dan kriteria ISPO dalam perkebunan yakni pada nomor 5 tentang tanggung jawab tenaga kerja. PT. Inti Indosawit Subur terdiri dari karyawan staf dan non staf. Tingkat kehadiran di Afdeling 1 sudah memenuhi standar dan kualitas kerja panen. Pengelola kebun memberikan sistem pengupahan bukan hanya berupa uang namun juga dalam berupa bahan baku. Perusahaan kebun menyediakan alat pelindung diri (APD) layak pakai dan fasilitas sarana dan prasarana untuk kesejahteraan dan Kesehatan pekerja., Management employment be one key main success in manage plantation coconut palm. Activity apprenticeship carried out at PT. Inti Indosawit Subur, District Pelalawan, Riau which was held in the month January until in May 2023. Activities apprenticeship held in a manner right on the field as worker daily freelance (PHL), companion the foreman, and the companion assistant. For learn aspect technical and managerial. Management power work be one aspect specifically observed writer in activity apprenticeship going on. In company plantation, power Work harvest become factor main can determine quality as well as quantity obtained production company plantation. Aspect specifically observed ie exists organizing power work, achievement work, discipline and quality work, and implementation of Indonesian Sustainable Palm Oil (ISPO). The company applies ISPO principles and criteria in plantation namely in number 5 about not quite enough answer power work. PT. Inti Indosawit Subur Fertile consists from employee staff and non staff. The level of attendance in Afdeling 1 has fulfil standard of quality Work harvest. Manager garden provide a reward system No only in the form of money but also in form material raw. Garden company provide tool protector (PPE) is appropriate use and facilities facilities and infrastructure For worker welfare and health.
Keyword: attendance rate, ISPO, work performance, work quality

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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