Modeling Si/SiGe/Si Quantum Well Solar Cell Using Different Well Width and Mole Fraction

Quantum Well Solar Cell ( QWSC) was proposed as a means to achieve higher efficiencies compare with conventional monolithic solar cell structures. Quantum well formed by adding lower band gap material within intrinsic region of p-i-n solar cell with less than 100 A thicknesses. In this research, five structure of QWSC device were designed with different quantum well thickness. Each structure using different SiGe mole fraction in order to achieve the influence of mole fraction variation to quantum efficiency (QE). Parameters of SiGe in simulations were obtained from various references to use with PC1D and Simwin Software. From simulation result, quantum efficiency will increase from mole fraction 0.2 (84.5135 %) until reaching maximum efficiency at mole fraction 0.75 (91.5703 %). Quantum efficiency begin to decrease at mole fraction higher than 0.75. At mole fraction 0.85 quantum efficiency equal to 90.4830 % and at mole fraction 0.95 quantum efficiency sharply become 71.6327 %.Index Terms— Solar cell, quantum well solar cell, SiGe

Analisis Implementasi Load Balancing Dengan Metode Source Hash Scheduling Pada Procol SSL

The Course programming period give the highest load for academic server (SIAM) of UB. More than 65000 student will access the system concurrently. There for, the load balancing mechanism is required to improve system capacity and prevent the access failure SIAM using SSL mechanism to provide protection for academik data transaction. SSL do the handshaking process to maintain the connectivity of the web browser. In addition, the client and the server will establish a session recording mechanism to keep the identity of a connection to prevent repeat login. This study tried to implement a source-hash scheduling mechanism on the load balancing system. This mechanism subjected to prevent the termination of a session connection which has been formed. The results shows that the source hash scheduling has increased the capacity of the system to handle as many as 9.02594 million requests from 65 087 different IP within 1 day. And provide total data throughput of 169 537 010 395 Bytes (169 GB) in a single day getIndex Terms—Load Balancing, Source Hash Schedulin

Efektifitas Kebijakan Moneter terhadap Inflasi di Indonesia

The purpose of this research is to determine the effect of monetary policy through the discount rate and reserve requirement by the Central Bank as well as the previous inflation towards the inflation rate, and to investigate the effectiveness of monetary policy through the discount rate and reserve requirement as well as the previous inflation in influencing the rate of inflation. The data that is used to determine the discount rate and reserve requirements affect inflation in Indonesia is using multiple linear regression model with the approach of the Partial Adjustment Model (PAM) and statistical (partial, simultaneous tests and the coefficient of determination) as well as classical assumption or econometrics (test normality, linearity, autocorrelation, multicolinearity and heteroscedasticity). From these results, it is known that monetary policy from the first quarter 1985 to first quarter 2010 was still less effective direct influence on inflation, this can be known from a partial test done even though the relationship of monetary policy is consistent with monetarist theory. Keywords: inflation, discount rate, reserve requiremen

Penilaian Kinerja Keuangan Pada Emiten Lq-45 Periode 2007 – 2011 Di Bursa Efek Indonesia

LQ 45 indexes is an index consisting of 45 shares of stocks that have a high liquidity and also consider the capitalization of stock market shares are. Financial performance is an illustration of achieving financial success on the company. Financial performance on the issuers of LQ 45 during the period 2007 - 2011 experienced an increase in the different areas of each issuer. This can occur because of action for investors who speculate, economic conditions in the country, conditions in the financial performance of issuers LQ 45 and the appreciation of the stock that investors of the stock issuers LQ 45 that active transactions in the Indonesian capital market. Results from this research can be concluded that there are six values of the financial ratio (QR, DER, ROE, ITO, PBV, and PER), which shows an improvement in financial performance of issuers LQ 45 during the period 2007-2011, and only the value of the ratio of the market assessment can increased the most dominant performance in the financial of issuers LQ 45

Analisis Neraca Air Hidrometeorologis dengan Pendekatan Karakteristik Fisik DAS di DAS Gondang, Kabupaten Nganjuk, Provinsi Jawa Timur

Sumberdaya air merupakan sumberdaya alam yang penting untuk memenuhi kebutuhan dasar makhluk hidup. Kebutuhan akan sumberdaya air dipengaruhi oleh aktivitas penduduk dalam berbagai aspek pembangunan (Simonovic, 2002). Permasalahan terkait dengan sumberdaya air di DAS Gondang adalah kekurangan air setiap tahun. Penanganan yang dilakukan selama ini berupa dropping air sebanyak warga yang terdampak. Penelitian ini bertujuan untuk: 1) menghitung besar ketersediaan air dengan pendekatan debit limpasan; 2) mengidentifikasi faktor-faktor yang mempengaruhi ketersediaan air dan 3) menentukan neraca air hidrometeorologis untuk menilai ketersediaan air. Metode yang digunakan adalah sampling dengan analisa spasial. Hasil analisis menunjukkan ketersediaan air di DAS Gondang tergolong kecil dengan nilai 0 - 2,5 m3/detik. DAS Gondang lebih berpotensi untuk mengalami kekurangan air yang didasarkan dari nilai defisit. Kondisi defisit terjadi selama 7 bulan dengan kisaran kekurangan air sebesar 20 – 189 mm/bulan. Defisit terbesar terjadi pada daerah dataran sedangkan surplus terbesar berada di daerah lereng perbukitan. Penggunaan lahan berupa pertanian dan pemukiman memicu terjadinya defisit yang cukup besar dikarenakan jumlah kebutuhan air pada penggunaan lahan ini lebih besar dibandingkan ketersediaan air

Komunikasi Persuasif Guru dalam Membangun Kreativitas Anak Usia Dini pada Tk Melati Putih Desa Bukit Kratai

This the is under the guildance of father Ir. Rusmadi Awza, S.Sos, M.SiWhite jasmine TK school is the frits school kindergarten in the village Kratai hill. Inthis study the quthors wanted to see how persuasive comunication teacher in earlychildhod creativity to build on TK White Jasmine.As for the purpose of this research is to know: 1) learning methodsapplied at school TK White Jasmine. 2)To devermine the components of the learningcurriculum that is in White Jasmine TK. Research uning descriptive qualitatifresearch method informen that has been set using purposive sampling method amongthe principal TK, TK two permanent teachersin budget parents, students TK WhiteJasmine. Data celecting interviews, observation, and documentation. Results of thestudy stated that the method applied learning school TK White Jasmine.so buildchildren creativity in developthing their thinking at an early agel. The learningmethods inclued : preparation of teachers in the learning process, control andassesment techniquen, build confidance in learning, learning how to build creativitychildren. And the role of theachers in a creative game in curriculum componentsapplied in school TK White Jasmine include : the development of the curriculumstucture, curriculum, princeples of curriculum development,aswellascomponentofthecurriculum.Keywood : Communication teacher in kreativity childhoo