Judul: Analisis Thermal dari Bangunan Greenhouse Serre dan Sree Modifikasi untuk Tanaman Krisan (Chrysanthemum Morifolium Ramat)
Abstrak: Micro climate in the building is one of the greenhouse effect on plant growth inside. So it was very important to know the thermal characteristics of the greenhouse building. The method used in this study is to analyze and simulation the thermal characteristics of distribution in two types Serre different greenhouse on the roof by using the software surfer 9. Object under study is the distribution of temperature, humidity, light intensity, wind speed and move the heat. Measurements were performed for 12 hours in 4 days from 06:00 until 18:00, using thermocouples, recorder, anemometer, and fluxmeter. Simulation results are an average of 4 days using the software surfer 9 can be seen that the usual greenhouse Serre have higher temperatures than greenhouse Serre modifications especially during the daytime, which is indicated by a red contour color.
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Judul: Analisis distribusi suhu dalam bangunan greenhouse tunnel berventilasi ganda
Abstrak: Setiap jenis tanaman dalan pertun~buhannya memerlukan kondisi lingkungan yang spesifik, khususnya bnamai] krisan. Lingkungan yang sesuai dengan kebutuhan tanaman akan membuat tanaman dapat berkenlbang dengan optimal. Di dalam greenhouse, rekayasa faktor lingkungan dapat dikendalii. Junllah radiasi matahari yang masuk ke dalam greenhouse dipengaruhi oleh jenis atap, dinding, dan lantai. Temperatur dm kelembaban udara di dalan~ bangunan bergantung pada kondisi iklim lingkt~ngan luar dan adanya proses pindah panas yang terjadi. I-lal ini dapat i n e m p e n g a ~pe~ru~b ahan distribusi sdlu yang terjadi di &lam bangunan sedangkan keccpatan dan laju aliran udara bergantxmg pada bentuk ventilasi dan bahan penutup ventilasi. Salah satu bentuk greenhouse yang telah digunakan di Indonesia yaitu Greenhouse Tunnel (setengah liagkaran). Bangunan nunah tanatnan ini bjasa digunakan di negm yang beriklim su1,lropis karcna merupakm pengumpd panas yang baik. Greenhouse ini dapat digunakan di iklim tropis, sepcrti lndonesia yang n~emerlukan beberapa inodifikilsi pada konstruksi bangunan. Untuk mengctahui kesesuaiai bangunan sesudah dinlodifktasi dengan kondisi iklim iropis lembab di Indonesia khwwnya di lokasi penelitian &darn budidaya tanaman krisan, perlu adanya pengkajian inengenai analisa didribusi suhu di dalam Greenhouse Tunnel berventilasi ganda di dalam Greenhouse Tunnel berventilasi ganda di PT. Alam Indah Bunga Nusantara, Cipanas, Cianjur.
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Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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