Judul: Sharia-based Micro Investment Modeling Using Profit Loss Sharing Model
Abstrak: Investasi merupakan aktivitas ekonomi yang sering dilakukan untuk mendapatkan keuntungan. Salah satu cara yang dapat dilakukan adalah dengan memberikan pinjaman kepada individu atau kelompok yang membutuhkan dana. Peminjam membutuhkan modal untuk membangun usahanya, sedangkan pemberi pinjaman menginvestasikan uangnya kepada peminjam dengan bunga sebagai keuntungannya. Akan tetapi, praktik bunga ini sering kali merugikan salah satu pihak, yaitu pedagang dengan laba harian yang kecil. Oleh karena itu, investasi syariah menghadirkan praktik investasi pinjaman yang lebih adil bagi kedua belah pihak. Dengan konsep bagi hasil yang ditawarkan, pedagang dengan laba harian kecil bisa mendapatkan keuntungan tanpa khawatir dirugikan. Dalam penelitian ini, model bunga atau rentenir dan model bagi hasil atau Profit Loss Sharing (PLS) diterapkan dalam suatu transaksi pinjaman antara pedagang dan investor, dengan nilai bunga dan porsi bagi hasil yang beragam dan besar pinjaman beragam pula. Selanjutnya dari masing-masing model, dilakukan penghitungan return yang didapatkan oleh investor dan pedagang lalu dibandingkan hasilnya. Hasil yang didapat menyatakan bahwa model PLS lebih aman bagi pedagang dibandingkan dengan model rentenir., Investment is a common economic transaction for gaining profit. Issuing loans to individuals or groups who need funds is one of the ways to invest. Lender, as the investor, will acquire profit from their investment in the form of interest on the loan from the borrower. However, this interest model is a burden for the borrower, especially traders with very low daily profit. Thus, a fair way of investing for both investor and borrower such as sharia investment is considered. This investment model is based on the concept of Profit Loss Sharing (PLS), which enables traders to access the capital they need without having to endure the excessive risks of loan. In this study, investment modelling is established for the interest model (loan shark model) and the PLS model with various interest and profit sharing portions and various credit sizes. The calculation of return of both models for the investor and borrower are performed and then compared. The result shows that the PLS model is safer for the traders than the loan shark model.
Keyword: Sharia Investment, Profit Loss Sharing Model, Loan Shark Model

Judul: Investor Preference Toward Sharia Financial Products
Abstrak: Investor Preference Toward Sharia Financial Products is a research about investor behavior which explains factors influencing investment decision. In essential, how the behavior pattern of investor describes about what, why, and how to invest. This research is useful for financial institutions to help in analyzing investor need. Investor need can be learned through investment decision process. Furthermore, this research also useful as investors reference in determining investment decision. This research aims to describe the development of sharia financial investment in Indonesia and to compare between sharia financial products and conventional financial products, and to analyze factors influencing investor preference of sharia financial investment. This research was based on primary and secondary data. Primary data have been obtained through a structure questionaire. The sample size was 87 and the respondents were consisted of participant and non participant of sharia capital market school in Jakarta. The secondary data have been collected from various books, journals, and websites. The sampling technique followed in this research is purposive sampling. In order to analyze the collected data, the following tools were used. Descriptive analysis is used to describe the development of sharia financial investment in Indonesia and the comparison between sharia financial products and conventional financial product. Logit analysis is used to analyze factors influencing sharia financial investment compared to conventional financial investment. Afterward, multinomial logit is used to analyze factors influencing sharia mutual fund, sharia deposit, sharia insurance, and dinar compared to sharia stock. The result of the logit model shows that the factor influencing investor preference toward sharia financial investment is the level of knowledge. If the level of knowledge increases, then the investors will prefer to put their fund in sharia financial investment than conventional financial investment. This is because that to have a knowledge about sharia financial theory, is the initial process in determining investment decision. Therefore, the level of knowledge positively correlated with investor preference in sharia financial investment. Multinomial logit model indicates that the participation of sharia capital market school influences toward investment preference in sharia financial products. So it’s hoped to the institution related to sharia capital market and other sharia financial institutions to increase literacy program about sharia financial investment. Beside that, the level of saving shows significant influence toward sharia insurance preference, which the investors with a higher saving more prefer to put most of their funds in sharia stock than to put in sharia mutual fund and sharia insurance. Afterward, the level of education also shows a significant relation toward sharia insurance preference, which the investors with a higher education tend to take more risk and consequently they prefer to invest in sharia stock than sharia insurance. This result also suggest that age of respondent correlates with the investment preference of sharia mutual fund, which the young investor tend to have their money in sharia stock than sharia mutual fund.
Keyword: Investor Preference, Sharia Finance, Logit, Multinomial Logit

Judul: Sintesis Superkonduktor YBCO Dengan Metode Evaporasi Dan Karakterisasinya
Abstrak: Telah berhasil dibuat pelet superkonduktor YBCO-123 dengan metode evaporasi dengan menghasilkan Tc = 100 K. Sintesis dilakukan dengan mencampur garam-garam nitrat Y(NO3)2, Ba(NO3), Cu(NO3)2 di dalam pelarut H2O pada suhu 150 oC. Setelah melalui proses pirolisis pada 350 oC selama 1 jam, prekursor dikalsinasi pada 900 oC selama 4 jam kemudian serbuk dikompaksi dengan tekanan hidrolik 5 ton untuk membentuk pelet dengan diameter 1,5 cm dan tebal 0,24 mm. Sintering dilakukan pada suhu 940 oC selama 20 jam. Efek meissner menunjukkan fenomena levitasi pada temperatur sekitar 80 K. Hal ini menunjukkan fasa superkonduktor telah terbentuk. Data XRD memberi mengkonfirmasi bahwa fasa kristal 123 telah terbentuk. Nilai konduktivitas didapat dari hasil pengukuran dengan LCR pada temperatur 300 K sebesar 4 x 10-5 S/cm. Pada penurunan temperatur dari 100 K ke 80 K terjadi kenaikan nilai konduktansi yang tajam dari 4.2 x 10-4 S/cm ke nilai 1.309 x 10-1 S/cm.
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