Judul: Study Procurements and Rental of Plants at the Sentra Tanaman Hias Permata Buana Bojongsari, Depok City
Abstrak: Industri lanskap di Indonesia semakin berkembang seiring dengan munculnya berbagai perusahaan yang bergerak di bidang lanskap, salah satunya adalah nurseri. Sentra Tanaman Hias Permata Buana merupakan sebuah tempat berisi kumpulan nurseri yang menyediakan berbagai jenis tanaman, tidak hanya menjual tetapi juga menyediakan penyewaan tanaman untuk keperluan dekorasi indoor maupun outdoor. Tempat tersebut ramai dikunjungi baik oleh para pecinta tanaman hias maupun perusahaan lanskap yang mencari tanaman untuk kebutuhan lanskap, sehingga pengadaan tanaman pada nurseri perlu diperhatikan. Oleh karena itu diperlukan penelitian ini untuk menemukan kendala/permasalahan pada sistem pengadaan tanaman dan memberikan rekomendasi strategis terkait pengadaan tanaman di nurseri agar usaha nurseri dapat berkembang lebih baik dan berkelanjutan. Selain itu, penelitian ini juga bertujuan untuk mempelajari sistem penyewaan tanaman yang dapat menjadi peluang usaha baru dalam bidang tanaman. Penelitian dilaksanakan di Sentra Tanaman Hias Permata Buana Bojongsari, Kota Depok dari Bulan Januari 2023 sampai dengan September 2023. Pengumpulan data dilakukan dengan observasi langsung di lapangan, wawancara dengan pengelola dan studi pustaka. Data dianalisis secara kualitatif dan kuantitatif menggunakan metode analisis SWOT. Hasil penelitian menunjukkan bahwa sistem pengadaan tanaman di Sentra Tanaman Hias Permata Buana yang terdiri atas perbanyakan, pemeliharaan, dan penjualan masih bersifat konvensional, tetapi beberapa nurseri sudah mulai bergeser ke arah modern dimana pada beberapa nurseri sudah memanfaatkan media digital dan kemajuan teknologi. Berdasarkan pendekatan SWOT, sistem pengadaan Sentra Tanaman Hias Permata Buana berada pada kuadran I (Grow and build strategy) sehingga membutuhkan strategi seperti pengembangan penelitian, sosialisasi/edukasi, atau pengembangan usaha kedepannya. Dengan demikian, rekomendasi strategis yang diberikan untuk sistem pengadaan tanaman di Sentra Tanaman Hias Permata Buana ini berfokus untuk pengembangan pada sistem pengadaan tanaman di nurseri yaitu pengembangan upaya promosi melalui media digital, meningkatkan keterampilan sumber daya dan legalitas, dan memperluas target pasar., The landscape industry in Indonesia is growing along with the emergence of various companies engaged in the landscape sector, one of which is a nursery. Permata Buana Ornamental Plant Center is a place with a collection of nurseries that provide various types of plants, not only selling but also selling plants for indoor and outdoor decoration needs. The place is get crowded with both ornamental and landscape plant lovers who are looking for plant companies for landscape needs, so it is necessary to pay attention to the procurement of plants in nurseries. Therefore, this research is needed to find constraints/problems in the plant procurement system and provide strategic recommendations related to plant procurement in nurseries so that nursery businesses can develop better and sustainably. In addition, this research also aims to study the plant rental system which can be a new business opportunity in the field of plants. The research was conducted at the Sentra Tanaman Hias Permata Buana Bojongsari, Depok from January 2023 to September 2023. Data collection was carried out by direct field observation, interviews with managers and literature study. Data were analyzed qualitatively and quantitatively using the SWOT analysis method. The results showed that the plant procurement system at the Permata Buana Ornamental Plant Center which consisted of propagation, maintenance, and sales was still conventional, but several nurseries had started to move towards modernity
Keyword: landscape industry, nursery, plants rental, plants maintenance, SWOT analysis

Judul: Studi Sistem Pengadaan Tanaman Lanskap di Kelurahan Bojongsari Baru, Kecamatan Bojongsari, Kota Depok, Jawa Barat
Abstrak: Plants are important elements in landscape design so that nurseryman are also required in landscape industry besides landscape architects, landscape contractors and landscape managers. This research was conducted in Bojongsari Baru village which is one of the business centers of ornamental plants, in July-December 2013. The purpose of this study was to study the procurement system of small-scale nurseries run by Bojongsari Baru citizens and to compose some strategies for ornamental plant business development. Research methods with observation and interviews of citizens then performed descriptive and quantitative analysis to get an overview of plant business conditions and SWOT analysis for business development strategy. The results of this study indicate cultivation, plant maintenance, and marketing is still done using conventional methods and simple tools due to the limited availability of agricultural land and capital, but citizens have a desire to develop this business. Several strategies recommended for nurserymen in Bojongsari Baru are careful production planning, optimization of land use, and more detailed financial records.
Keyword: ornamental plant., nurseryman, nursery, landscape

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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