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Kota semarang,
Jawa tengah
INDONESIA
International Journal of Science and Engineering (IJSE)
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
The scope of journal covers all area in the application on chemical, physical, mathematical, biological, agricultural, corrossion, and computer science to solve the engineering problems.
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Articles 5 Documents
Search results for , issue " Vol 9, No 1 (2015)" : 5 Documents clear
Prediction of Weekly Rainfall in Semarang City Use Support Vector Regression (SVR) with Quadratic Loss Function Prahutama, Alan; Yasin, Hasbi
International Journal of Science and Engineering Vol 9, No 1 (2015)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.613 KB) | DOI: 10.12777/ijse.0.0.

Abstract

Semarang city is one of the busiest city in Indonesia. Doe to its role as the capital city of Central Java, Semarang is known as having a relativity high rate economic activities. The geographic of Semarang city bordered by the Java sea, thus whenever the rainfall is high, there could be flood at certain area. Therefore, prediction of rainfall is very important. Support vector machine (SVM) is one of the most popular methods in nonlinear approach. One of the branches of this method for prediction is support vector regression (SVR). SVR can be approached by quadratic loss function. The study is focus on Semarang rainfall prediction during 2009 to 2013 using several kernel function. Kernel Function can provide optimal weight Some of kernel functions are linear, polynomial, and Radial Basis Function (RBF). Using this method, the study provide 71.61% R-square in the training data, for C parameter 2 with polynomial (p=2), and 71.46% R-square for the testing data  
Six-Correction Logic (SCL) Gates in Quantum-dot Cellular Automata (QCA) Rahman, Md. Anisur; Waheed, Sajjad; Habib, Md. Ahsan; Bahar, Ali Newaz
International Journal of Science and Engineering Vol 9, No 1 (2015)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (346.745 KB) | DOI: 10.12777/ijse.9.1.9-12

Abstract

Quantum Dot Cellular Automata (QCA) is a promising nanotechnology in Quantum electronics for its ultra low power consumption, faster speed and small size features. It has significant advantages over the Complementary Metal–Oxide–Semiconductor (CMOS) technology. This paper present, a novel QCA representation of Six-Correction Logic (SCL) gate based on QCA logic gates: the Maj3, Maj AND gate and Maj OR. In order to design and verify the functionality of the proposed layout, QCADesigner a familiar QCA simulator has been employed. The simulation results confirm correctness of the claims and its usefulness in designing a digital circuits.
Non Oblivious Watermarking Technique for JPEG2000 Compressed images using Arnold Scrambling of Unequal Size Watermark Blocks Kasana, Geeta; Singh, Kulbir; Bhatia, Satvinder Singh
International Journal of Science and Engineering Vol 9, No 1 (2015)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1233.48 KB) | DOI: 10.12777/ijse.9.1.

Abstract

In this paper, a watermarking technique for JPEG2000 compressed image is proposed. Scrambling of secret message is performed block-wise using Arnold Transform. Secret message is divided into non-overlapping blocks of unequal size and then Arnold transform is applied on each block and secret key is generated based on the periodicity of each block. Scrambled secret message is embedded into qualified significant wavelet coefficients of a cover image. After embedding the secret message into wavelet coefficients, the remaining processes of JPEG2000 standard are executed to compress the watermarked image at different compression rates. Scaling Factor (SF) is used to embed watermark into wavelet coefficients and the value of SF is stored into COM box of the code stream of JPEG2000 compressed image and this SF value and secret key are used to extract the embedded watermark on the receiver side. The performance of the proposed technique is robust to a variety of attacks like image cropping, salt and pepper noise, and rotation. Proposed technique is compared with the existing watermarking techniques for JPEG2000 compressed images to show its effectiveness.
Dual solutions for MHD stagnation-point flow of a nanofluid over a stretching surface with induced magneticfield Naramgari, Sandeep; C, Sulochana
International Journal of Science and Engineering Vol 9, No 1 (2015)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (363.602 KB) | DOI: 10.12777/ijse.9.1.1-8

Abstract

Present study deals with the buoyancy-driven MHD mixed convection stagnation-point flow, heat and mass transfer of a nanofluid over a non-isothermal stretching sheet in presence of induced magneticfield, radiation, chemical reaction, suction/injection and heat source/sink. The basic governing partial differential equations are reduced to a set of ordinary differential equations by using appropriate similarity transformation. The resulting system is solved numerically by bvp5c Matlab package. Numerical results are validated by comparing with the published results. The influence of non-dimensional governing parameters on velocity, induced magneticfield, temperature and concentration profiles along with coefficient of skin friction, local Nusselt and Sherwood numbers are discussed and presented with the help of graphs and tables. Comparisons are made with the existed studies. Results indicate that dual solutions exists only for certain range of suction/ injection parameter and injection parameter have tendency to enhance the momentum, thermal and concentration boundary layer thickness.
The role of fluoxetine on macrophage function in chronic pain (Experimental study in Balb/c mice) Pudjonarko, Dwi; Dharmana, Edi; Hartanto, OS
International Journal of Science and Engineering Vol 9, No 1 (2015)
Publisher : Chemical Engineering Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (651.319 KB) | DOI: 10.12777/ijse.9.1.27-33

Abstract

Chronic pain raises stress conditions such as depression that can lower the cellular immunity. Fluoxetine is an antidepressant  used as an adjuvant in pain management but no one has been linked it with the body immune system. The objectives of this research were to proof the benefits of fluoxetine in  preventing degradation of macrophage function in chronic pain by measuring the macrophage phagocytic index , macrophage NO levels and the liver bacterial count in BALB/c mice infected with Listeria Monocytogenes.A Post Test - Only Control Group Design was conducted using 28 male mice strain BALB /c, age 8-10 weeks. The control group (C), mice got the same standard feed as the other groups. Chronic pain group (P), mice were injected with 20μL intraplantar CFA on day-1. Pain + fluoxetine early group (PFE) were treated with P + fluoxetine 5 mg / kg ip day-1, the 4th, the 7th and the 10th, while the Pain + fluoxetine late group (PFL) were treated with P + fluoxetine 5 mg / kg ip on day 7th and 10th. All mice were injected with 104 live Listeria monocytogenes iv on day 8th. Termination was performed on day 13th. Differences within groups  were analyzed using  One-way ANOVA and Kruskall Wallis, whereas the correlation of variables were analyzed using  Pearsons product moment. The experimental results showed that The macrophage phagocytic index and NO macrophage level (pg/mL) in PFE group(2,24±1,013; 0,24±0,239) was higher than than P group (1,68±0,920; 0,21±0,263) and there was no different in the macrophage phagocytic index of PFE group compared to C group (p=0,583; p=0,805). In PFL group (4,32±1,459; 0,54±0,294) the macrophage phagocytic index as well as NO macrophage level (pg/mL) was higher than P group (1,68±0,920; 0,21±0,263) with p=0,002; p=0,017. P group Bacterial count (log cfu/gram) (2,30±0,849) was significantly higher than C group(1,15±0,223) (p=0,007), while PFE group bacterial count (1,96±0,653) and PFL group bacterial count (1,84±0,403) compared to C (1,15± 0,223) was not significantly different (p=0,093; p=0,220). Correlation found between macrophage phagocytic index and macrophage NO (r=0,515, p=0,005).Macrophage phagocytic index and macrophage NO showed no correlation with bacterial count (r=-0,051, p=0,798; r=-0,071, p=0,719).It can be concluded that fluoxetine significantly incerases macrophage phagocytosis index and macrophages NO level in mice with chronic pain,  on the other hand fluoxetine decreases liver bacterial count . There is a positive correlation between macrophage phagocytosis index and macrophages NO level, while no correlation observed  among two variables with mice liver bacterial count in chronic pain.

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