Judul: Penentuan Tingkat Kemiskinan Menggunakan Logika Fuzzy pada Koperasi Baytul-Ikhtiar Bogor
Abstrak: Poverty is a problem for every country in the world, including Indonesia. Many indicators have been used to determining the level of poverty. Baytul-Ikhtiar cooperation (BAIK) is a cooperation that offers a micro-credit to the middle lower economy level. The cooperation has a problem to determine the level poverty of a person. The use of fuzzy logic system is one way to determine the level of poverty. One of model using the fuzzy logic is Mamdani model. There are some steps being taken in Mamdani model, namely fuzzification, evaluation, aggregation, and defuzzification. Inputs used in this paper are income, the number of dependent, the condition of building, and the consumption of rice. The output of this model is the level of poverty. It is compared to the output using data from the BAIK. It shows that the conformity percentage is 93,33 percent. It can be concluded that fuzzy model can be used to determine the level of poverty in BAIK cooperation.
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Judul: Penentuan tingkat kemiskinan menggunakan logika fuzzy pada Koperasi Baytul-Ikhtiar Bogor
Abstrak: Kemiskinan merupakan masalah di setiap negara di dunia, termasuk di Indonesia. Banyak indikator yang digunakan untuk menentukan tingkat kemiskinan. Koperasi Baytul-Ikhtiar (BAIK) merupakan koperasi yang melayani kebutuhan mikro kredit pada masyarakat menengah ke bawah. Koperasi ini memiliki permasalahan untuk menentukan tingkat kemiskinan seseorang. Pemanfaatan sistem logika fuzzy merupakan cara yang tepat untuk menentukan tingkat kemiskinan sebuah keluarga, dalam hal ini digunakan model Mamdani. Ada beberapa tahapan yang dilakukan dalam model Mamdani, yaitu fuzzifikasi, evaluasi aturan-aturan, agregasi, serta defuzzifikasi. Masukan (input) yang digunakan dalam karya ilmiah ini adalah pendapatan keluarga, jumlah tanggungan, kondisi bangunan, dan konsumsi beras. Keluaran (output) dari sistem ini adalah tingkat kemiskinan. Output tersebut dibandingkan dengan data dari BAIK. Hasilnya menunjukkan bahwa persentase kecocokan dari sistem logika fuzzy adalah 93,33 persen. Hal ini menunjukkan bahwa model fuzzy dapat digunakan untuk menentukan tingkat kemiskinan pada Koperasi BAIK
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, BAIK cooperation, Fuzzy logic, povertyP

Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell