Judul: Investment Opportunity and Strategy in Developing Laccifer Lacca KERR Cultivation Bussines : Case Study at KPH Probolinggo Perum Perhutani Unit II East Java
Abstrak: Shellac flea Laccifer lacca Kerr is a kind of fitofag insect, which is living at Kesambi Tree (Schleichera oleosa Merr). During its life cycle, shellac flea has been producing secretion in liquid form, known as LAK and having many uses, such as varnish/polish, food cover, drug capsule, cassette ribbon, etc. In 2005, Perum Perhutani has produced 60 547 kg LAK pellets, but has not fulfilled yet market demand. Cultivation technique is still conducted in a very sampling, and easy to be studied. Investment in developing shellac flea is also profitable, and promising. There are two choices of management schemes in it cultivate, the first is by infecting shellac flea to the host tree when the tree is 15 years old (project I) and the second is by infecting shellac flea when the tree is 4 years old (project I). Financially, the Project II is more beneficial than Project I, so that the investment for project II is reasonable to be done. The value of NPV + 22 321 052 395, IRR 16.9%, BCR 1.55 and Net B/C 3.71 with discounted payback period for 10 year 8 months. SWOT analyzing was used in design strategy to face the competition in business world. Strategy of SO (Strength Opportuniy) in SWOT analyzing could be applied in Perum Perhutani to develop shellac flea cultivation in the future.
Keyword: 

Judul: Inventarisasi Parasitoid pada Budidaya Kutu Lak (Laccifer lacca Kerr) di KPH Probolinggo Perum Perhutani Unit II Jawa Timur
Abstrak: Kutu lak (Laccifer lacca Kerr) adalah jenis serangga yang termasuk Famili Kerriidae, Ordo Homoptera, yang hidup secara parasitik pada tanaman inangnya. Serangga tersebut menghasilkan resin alami yang kompak dan tebal, serta menempel pada cabang tanaman tempat hidupnya yang biasa disebut lak. Lak digunakan sebagai bahan baku untuk industri elektronika, percetakan, tekstil, pakaian, kosmetik dan makanan. Penelitian ini bertujuan untuk mengidentifikasi parasitoid kutu lak, menghitung tingkat parasitisasi yang terjadi di BKPH Kabuaran dan Taman, Kesatuan Pemangkuan Hutan (KPH) Probolinggo, Perum Perhutani Unit II Jawa Timur. Metode pengumpulan data dengan mengambil sampel lak cabang dari BKPH Kabuaran dan Taman masing-masing sejumlah 200 sampel lak cabang. Spesies parasitoid yang dominan ditemukan yaitu Famili Aphelinidae, Famili Encyrtidae (spesies Tachardiaephagus tachardiae), serta Famili Eulophidae. Jenis predator yang ditemukan terdiri dari Famili Lathridiidae (Coleoptera), Famili Cosmopterigidae dan Noctuidae (Lepidoptera), Famili Nabidae (Hemiptera), serta Chrysopidae (Neuroptera). Tingkat parasitisasi yang terjadi di lapangan dan gudang memiliki nilai rata-rata sebesar 93% dan 96%.
Keyword: Laccifer lacca Kerr, parasitoid, tingkat parasitisasi

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.
Keyword: