Judul: Pengaruh Kerentanan Keluarga dan Sikap Keuangan terhadap Perilaku Berhutang Nasabah Bank Emok
Abstrak: Keberadaan Bank Emok sulit dihilangkan dari kehidupan masyarakat karena dianggap memberikan kemudahan, meskipun memiliki beban bunga yang sangat besar. Penelitian ini bertujuan untuk menganalisis pengaruh kerentanan keluarga dan sikap keuangan terhadap perilaku berhutang nasabah Bank Emok. Desain penelitian menggunakan cross-sectional study dengan pengambilan contoh 150 istri dilakukan menggunakan teknik simple random sampling. Lokasi penelitian dipilih secara purposive di Kecamatan Tanah Sereal, Kota Bogor. Pengumpulan data dilakukan melalui kuesioner terstruktur dan wawancara. Hasil penelitian menunjukkan bahwa hampir setengah nasabah memiliki kerentanan keluarga terkategori rendah, sikap keuangan rendah, dan perilaku berhutang pada kategori sedang. Uji korelasi menunjukkan bahwa perilaku berhutang berhubungan positif signifikan dengan sikap keuangan dan mekanisme kehadiran. Uji regresi menunjukkan bahwa sikap keuangan, lama pendidikan suami, pendapatan per kapita, dan mekanisme kehadiran berpengaruh positif signifikan terhadap perilaku berhutang. Keluarga dapat meningkatkan keterampilan dalam mengelola keuangan rumah tangga dengan bijak sehingga dapat mengurangi perilaku berhutang di Bank Emok.
Keyword: Bank Emok, debt behavior, financial attitudes, vulnerability

Judul: Pengaruh Gaya Hidup dan Tekanan Ekonomi terhadap Kesejahteraan Subjektif-Ekonomi Keluarga Nasabah Bank Emok
Abstrak: Pemanfaatan uang yang belum optimal, menjadikan kondisi keuangan keluarga tidak efisien, kondisi ini menjadi motif keluarga memutuskan untuk berutang pada Bank Emok. Penelitian ini secara umum bertujuan untuk menganalisis pengaruh karakteristik keluarga, karakteristik pinjaman, gaya hidup, dan tekanan ekonomi terhadap kesejahteraan subjektif-ekonomi pada keluarga nasabah Bank Emok. Desain penelitian yang digunakan adalah cross sectional study dengan melibatkan 150 istri nasabah Bank Emok yang dipilih secara simple random sampling. Analisis data yang digunakan analisis deskriptif dan analisis inferensia. Hasil uji korelasi menunjukkan adanya hubungan positif signifikan gaya hidup dengan kesejahteraan subjektif-ekonomi. Hasil uji regresi menunjukkan bahwa adanya pengaruh positif signifikan gaya hidup terhadap kesejahteraan subjektif ekonomi. Semakin tinggi gaya hidup cermat (frugal) yang dianut oleh keluarga, maka akan semakin tinggi kesejahteraan subjektif ekonomi pada keluarga yang berutang pada Bank Emok. Keluarga dapat melakukan memulai kebiasaan menabung dan bekerja sama mengatur keuangan untuk meningkatkan kesejahteraan subjektif-ekonomi.
Keyword: Bank Emok, economic pressure, lifestyle, subjective economic well-being

Judul: Application of phycocyanin from microalgae Spirulina platensis as light harvesting in anatase TiO2 nanoparticle solar cell.
Abstrak: The dye sensitized solar cell (DSSC) has been assemblied used hybrid titanium oxide (TiO2) film/phycocyanin. The TiO2 film was synthesized by sol gel method with titanium chlorida (TiCl4) as precursor by hydrolysis used sulfuric acid (H2SO4). Furthermore, it calcinated for 2,5 hours in variation of annealing temperature (400oC, 600oC, 800oC, dan 1000oC). In XRD patterns exhibited which annealing temperature at 400oC to 800oC were anatase phase all. When annealed at temperature 1000oC, it caused phase transformation from anatase to rutile. The crystals size according to XRD patterns were 13,75 nm, 20,79 nm, 25,25 nm, 48,88 nm and particle size from SEM images were 43,06 nm, 44,91 nm dan 64,99 nm, 80,40 nm, respectively. The crystals and particle size increased with annealing temperature. The film thickness influenced material absorption. The optical measurement of TiO2 film and TiO2/phycocyanin hybrid film used UV-Vis spectrophotometer. Additional phycocyanin caused peak width of absorbed region from ultraviolet to visible region. The band gap energy of TiO2 can be calculated using the cut off wavelength obtained from the absorbance spectrum of a nanoparticles TiO2 films. Based on intersection between linear and energy (hv) axis. In this study just limited for anatase phase. It was caused anatase band gap is wider than rutile phase. That’s meaningful for solar cell application such as dye sensitized solar cell (DSSC). The absorption coefficient average at difference annealing temperature such as at 400oC, 600oC, 800oC were 8,1600x102, 1,7535x103 and 4,0154x102, where α < 104 include to direct transition. Band gap energy 400oC, 600oC, 800oC were 3,79 eV, 3,59 eV, and 3,35 eV, respectively. Based on this result, exhibition that band gap energy of TiO2 semiconductor film decreased with increasing annealing temperature. Spirulina platensis was cultivated in technical modification (Hastuti) with aeration under light intensity about 3000 lux. The cell density (stationer phase) for eighth day which OD value was more than 0,5. It means, the culture can be harvested. In 80 liters Spirulina platensis culture have been produced biomass dry about 10,46 gram and extracted phycocyanin in dry powders was 5,50 gram. The phycocyanin absorption spectrum at the wavelength of 619,36 nm (visible region) which had relaxation energy was 2,945 eV. The emission peak at the wavelength of 708,55 nm with relaxation energy about 2,793 eV. The Stokes shift based on difference energy absorption and emission calculated about 0,152 eV. Both of this showed phycocyanin can absorbed and radiated the sun light which received. This choice characteristic pigment was a good one related to sensitizer in solar cell application. Integration between light harvesting protein and TiO2 semiconductor surface had important role in improving of output as solar cell materials. The presence of carboxylate group (-COOH) made pigment be more efficient was due to anchored to the surface of TiO2 ampoter. The phycocyanin pigment had carboxylate group which reacted with TiO2 surface formed ester. The carboxylate group increased of dye electronics couple from excited state (p anti bonding orbital) to semiconductor acceptor state (TiO2 conduction band). The samples which made based on annealing temperature variation formed be solar cell respectively. Furthermore, cells be assembled for
Keyword: anatase, dye sensitized solar cell, efficiency, gap energy, phycocyanin