Judul: Pelepasan Fosfor dari Keramba Jaring Apung Ikan Mas (Cyprinus carpio) di Waduk Cirata
Abstrak: Waduk Cirata dibangun dengan fungsi utama sebagai PLTA serta perikanan keramba jaring apung (KJA). Banyaknya jumlah keramba akan menyebabkan banyaknya pakan yang diberikan serta pakan yang terbuang ke perairan Waduk. Pakan yang terbuang akan menambah beban sedimentasi dan meningkatkan kesuburan perairan. Peningkatan kesuburan perairan dapat terlihat dari pelepasan unsur fosfor ke perairan. Penelitian dilakukan dari bulan Januari hingga Maret 2013. Jenis ikan yang dipelihara di keramba adalah ikan mas dengan masa pemeliharaan selama 4 bulan. Ikan diberi pakan berupa pelet dengan FCR 2:1. Kandungan fosfor pada pakan CF adalah 5.58% dan pada pakan PL sebesar 3.38%. Beban jumlah fosfor yang dikeluarkan dari keramba jaring apung ikan mas untuk pakan CF adalah sebesar 104.6 kg per ton ikan dan untuk pakan PL sebesar 60,6 kg per ton ikan. Apabila keramba jaring apung ikan mas yang diberi pakan CF dan ditambahkan jaring lapis kedua berisi ikan nila, fosfor yang dilepas ke perairan adalah sebesar 95.6 kg per ton ikan sedangkan untuk pakan PL adalah sebesar 51.6 kg per ton ikan. Dengan adanya pemeliharaan ikan nila di jaring lapis kedua dapat menurunkan pelepasan fosfor sebesar 9 %.
Keyword: Common carp, Floating net cages, Phosphorus loading

Judul: Pelepasan Fosfor dari Keramba Jaring Apung Ikan Mas (Cyprinus carpio) di Waduk Cirata
Abstrak: Cirata Reservoir was built with the main function as hydropower and for fisheries floating net cages (KJA). A large number of cages will increasing amount of feed and will impact the discharged waste into the waters of the reservoir. Wasted feed will increase the burden of sedimentation and improve water enrichment. Increased of enrichment can be seen from the loading of phosphor element. This study was conducted from January to March 2013. Species of fish that are reared Common carp (Cyprinus carpio) with the rear period for 4 months. The fish were fed with a pellet with 2:1 of FCR. The content of phosphorus in CF feed is 5.58% and at 3.38% for PL feed. The calculations showed that the amount of phosphorus loads from floating net cages for CF feed is 104.6 kg per ton of fish and for PL feed is 60.6 kg per ton of fish. If the common carp floating cages that fed by CF was added a second layer of tilapia net, it will release phosphorus 95.6 kg per ton of fish, whereas the PL of 51.6 kg per ton of fish. With the rear of tilapia in the second layer nets can reduce the release of phosphorus by 9%.
Keyword: Phosphorus loading., Floating net cages, Common carp

Judul: Demographic Segmentation of Cosmetics Product Customers Based on CHAID Method
Abstrak: Chi-square Automatic Interaction Detection (CHAID) is one of decision tree method with chi-square criteria that will build non-binary trees based on a relatively simple algorithm. In this method, nominal, ordinal, and continuous data type can be used. However, the continuous predictors were splitted into categories with approximately equal number of observations. This research used CHAID method on building SHP Inc demographic segmentation. The sampling was performed to obtain relatively balance categories to produce a model that predict each category. There were three explanatory variables having structural linkage toward number of transaction variable. With depth equals to three, there were nine segments related to gender, age, and transaction period variable. These segmentation provided an overview about customers shopping pattern. Therefore, a more targetted campaign could be implemented perfectly according to the segmet characteristics.
Keyword: CHAID, customers, demographic, segmentation