Judul: Pola komunikasi, pengambilan keputusan, dan kesejahteraan keluarga jarak jauh pada mahasiswa pascasarjana IPB
Abstrak: Banyaknya motivasi untuk mendapatkan pendidikan yang layak dan tinggi dari berbagai pihak menyebabkan banyak masyarakat Indonesia mencoba untuk mencapai pendidikan pada jenjang yang semakin tinggi. Institusi pendidikan yang dicari masyarakat adalah yang memiliki kualitas baik. Banyak yang meninggalkan atau berpisah dengan keluarganya untuk menempuh pendidikan karena jauh dari tempat tinggalnya. Jarak antaranggota keluarga yang jauh mengakibatkan adanya pola komunikasi yang berbeda dibandingkan dengan keluarga yang hidup dalam satu rumah. Pola komunikasi yang tidak langsung (jarak jauh) akan mengakibatkan keluarga harus memiliki cara tersendiri untuk tetap bisa melakukan proses pengambilan keputusan keluarga. Manajemen sumberdaya keluarga yang terhambat oleh jarak akan berdampak pula dengan kesejahteraan keluarga.
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Judul: Alokasi Pengeluaran untuk Pendidikan, Pola Asuh Akademik Orang Tua, dan Motivasi Belajar Siswa SMA pada Keluarga Miskin
Abstrak: There are many Indonesian people who does not complete their education in senior high school level because of economic problem. This study aimed to analyze the influence of family expenditure for education and academic caring practices on learning motivation of high school students. The study involved 60 high school students and their mothers whom the family as beneficiaries of “Bantuan Langsung Tunai (BLT)” in Cibungbulang Subdistrict, Bogor District. The average of family expenditure that was allocated for senior high school education amounted to 16,42 percent of the total expenditure. Academic caring practices consist of self discipline and achievement support. More than half mothers (61,67%) have implemented good academic parenting. Learning motivation consist of intrinsic and extrinsic motivation. More than half of the students have medium learning motivation (51,67%). The result of regression indicate that the factor that can increase student’s learning motivation is academic caring practices
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Judul: Mercury Toxicity and It’s Effect on Histopathology Change of Nile Tilapia (Oreochromis niloticus).
Abstrak: Nile tilapia (Oreochromis niloticus) is one of fish species that oportunity to contaminated with mercury. The effects of pollutants can damage living organisms organs and can cause death. The effects caused mercury had acute or chronic character. The aims of this study are to determine threshold and acute toxicity of mercury chloride (HgCl2) of Nile tilapia (Oreochromis niloticus), to assess the effect of mercury chloride (HgCl2) on several biometric parameters (survival, growth rate of average daily weighted, liver condition, bile and reproductive variability of Nile tilapia (Oreochromis niloticus), assess the level of damage to the histological structure of the gills, liver and kidney of Nile tilapia (Oreochromis niloticus) caused mercury chloride (HgCl2) exposure. This study was conducted from February to June 2013. Nile Tilapia (Oreochromis niloticus) were used in this study were female with average weight 20 grams or 11-13 cm length range. Toxicant materials used in this study was mercury chloride (HgCl2). Fish were reared in each aquarium 60x40x30 containing 48 liters of water. This study consists of three stages: a preliminary test, acute test, and sub-chronic test. To determine the changes in biometric condition of tilapia approximated by measuring the survival rate (SR), the growth rate of average daily weight , the content of mercury in the fish organs, hepatosomatic index (HSI), the relative bile volume (VER), gonadal soamtic index (IKG), fecundity and oocit diameter, tissue damage caused by mercury in fish organs by making histological preparations stained with hematoxylin and eosin. The median lethal concentration (96 hr, LC50) of Mercury Chloride was calculated as 1,64 mgL--1.The survival rate was highest in the control treatment (46,67 %) . Mercury chloride with concentration 0.196 mgL--1 show significant effect to changes HSI and relative bile volume, and oocyte diameter of Nile tilapia (p < 0,05). Mercury chloride with a concentration of 0,164 mgL-1 and 0,196 mgL-1 have not a significant effect on the growth rate of weight, gonadal somatic index and fecundity of Nile tilapia (p > 0,05). Mercury chloride cause damage to gills (hyperplasia, hypertrophy, proliferation and neukrosis), liver (hyperplasia, hemorhage, shrinkage of hepatocytes, proliferation and neukrosis) and kidney (hyperplasia, hemorrhage, shrinkage of the glomerulus, proliferation and neukrosis).
Keyword: Nile tilapia, Hepatosomatic indexs (HSI), histopathology