Judul: Dampak dan Motivasi Perubahan Pola Migrasi dari Sirkuler ke Komuter
Abstrak: The objective of this research was to identifies economic and social impact which is received by migrant from changing of type migration from circular to commuter and identifies the influence from that impact to social and economic motivation migrant make decision to change of type migration from circular to commuter. Methods of this research using survey methods that are supported by in-depth interviews. Respondents were obtained using purposive sampling technique by 30 respondents. The research was conducted in Parakan Muncang Village, Nanggung District, Bogor Regency, West Java. The research was conducted from April through July 2013. Economic impact of migrants obtained after transfer to increase the income. Social effects obtained after transfer of increased social prestige and closeness of family relationships. Social impacts can arise, due to the purchase of by a status symbol things and intensity of communication with migrant families to become commuter. The other result showed that the change of type migration from circular to commuters affected by economic motivations.
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Judul: The Effect of Circular Migration on the SocioEconomic Conditions of Migrant Households
Abstrak: Keputusan melakukan migrasi dipengaruhi oleh beragam faktor. Selain faktor di daerah asal, pandangan terhadap daerah tujuan migrasi pun memainkan peran penting. Perubahan kondisi sosial ekonomi yang positif menjadi hal yang didambakan oleh para pelaku migrasi, mengingat alasan umum yang mendasari peristiwa migrasi adalah faktor ekonomi. Tujuan penelitian ini yaitu menganalisis pengaruh migrasi sirkuler terhadap kondisi sosial ekonomi rumah tangga migran. Metode penelitian menggunakan pendekatan kuantitatif didukung pendekatan kualitatif. Pendekatan kuantitatif menggunakan metode penelitian survei dan pendekatan kualitatif menggunakan wawancara mendalam serta studi literatur. Data kuantitatif dianalisis dengan menggunakan uji t. Hasil penelitian menunjukkan terdapat perbedaan tingkat partisipasi dan tingkat pendapatan rumah tangga migran terhadap rumah tangga nonmigran. Sementara itu, tidak ada perbedaan signifikan antara kondisi rumah tinggal dan kepemilikan aset antara rumah tangga migran dengan rumah tangga nonmigran., The decision to migrate is influenced by a variety of factors. Apart from factors in the area of origin, the view of the migration destination also plays an important role. Changes in positive socio-economic conditions are something that migrants covet, considering that the general reason underlying the migration event is economic factors. The purpose of this study is to analyze the effect of circular migration on the socioeconomic conditions of migrant households. The research method uses a quantitative approach supported by qualitative approach. The quantitative approach uses survey research methods and a qualitative approach uses in-depth interviews and literature studies. Quantitative data were analyzed using t test. The results showed that there were differences in the level of participation and income levels of migrant households to non-migrant households. Meanwhile, there is no significant difference between housing conditions and asset ownership between migrant and non-migrant households.
Keyword: circular migration, migrant households, socio-economic conditions,

Judul: Pengujian Virus Newcastle Disease Gen VII Isolat Lapang Sebagai Virus Standar Pada Uji Tantang Vaksin
Abstrak: This study was conducted to determine the standard of Newcastle disease virus Gene VII field isolate as a virus challenge to vaccine test. A virus suspension that has previously been tested by HA test then titrated with EID50 using 30 Specific Pathogen Free (SPF) of 10 day old chicken embryonated eggs. In addition, chicken lethal dose50 (CLD50) test were used to determine the virus titer that could cause 50% death of the chicken population. The CLD50 test was used 25 day-old-chickens (DOC) divided into 5 groups. The virus was diluted from 10-1 to 10-8. The 104 to 10-8 dilution of NDV was infected to every group of chicken via eyedrop and intranasal with 0.1 ml/chicken dosage. Haemagglutination test showed that the allantoic fluid were contain high titers of NDV is 512 HAU. The infective NDV that had been titrated by EID50 test showed the virus titers is 109 EID50/0.1 ml or 1010 EID50/ml and the virus titers of CLD50 test e.i 106.48 CLD50/0.1 ml or 107.48 CLD50/ml. These results can be concluded that the NDV Gene VII field isolates were most appropriate to be used as a standard virus to vaccine test
Keyword: Newcastle Disease Virus Gene VII, HA tes, EID50 test, CLD50 test