Entropy | An-Najah Staff

Optimizing the Wavelet Parameters to Improve Image Compression

Mon, 2014-06-02 10:42 — Allam Mousa

Journal Title, Volume, Page:

International Journal of Advances in Engineering & Technology, Sept 2012. ISSN: 2231-1963

Year of Publication:

2012

Authors:

Allam Mousa

Department of Telecommunication Engineering, Faculty of Engineering and Information Technology, An-Najah National University, Nablus. Palestine

Current Affiliation:

Department of Telecommunication Engineering, Faculty of Engineering and Information Technology, An-Najah National University, Nablus. Palestine

[email protected]

Nuha Odeh

Department of Telecommunication Engineering, Faculty of Engineering and Information Technology, An-Najah National University, Nablus. Palestine

Preferred Abstract (Original):

Wavelet compression technique is widely used to achieve high good compression factor. In this paper, certain experiments were performed to identify the importance and the sensitivity of this technique to various internal and external parameters. Compression factor and SNR are the main factors to be optimized here against many factors like; image type, division factor, subblock size. Changing these parameters has shown a significant change in the performance leading to verified steps on how to choose these parameters in order to optimize the performance to get better compression and quality

Optimizing The Wavelet Parameters To Improve Image Compressionn

Tue, 2013-06-04 10:47 — Nuha Odeh

Journal Title, Volume, Page:

International Journal of Advances in Engineering & Technology, Sept 2012. ISSN: 2231-1963

Year of Publication:

2012

Authors:

Allam Mousa

Department of Electrical Engineering, Faculty of Engineering, An-Najah National University, Nablus, Palestine

Nuha Odeh

Department of Electrical Engineering, Faculty of Engineering, An-Najah National University, Nablus, Palestine

Current Affiliation:

Department of Electrical Engineering, Faculty of Engineering, An-Najah National University, Nablus, Palestine

[email protected]

Preferred Abstract (Original):

The influence of the type of oil phase on the self-assembly process of γ-oryzanol + β-sitosterol tubules in organogel systems

Thu, 2013-02-14 14:46 — Hassan Ismaiel Sawalha (Manasra)

Journal Title, Volume, Page:

European Journal of Lipid Science and Technology , Volume 115, Issue 3, pages 295–300

Year of Publication:

2013

Link:

http://onlinelibrary.wiley.com/doi/10.1002/ejlt.201100395/abstract

Authors:

Hassan Sawalha

Chemical Engineering Department, An-Najah National University, Nablus, Palestine

Current Affiliation:

Chemical Engineering Department, An-Najah National University, Nablus, Palestine

[email protected]

Giel Margry

Laboratory of Physics and Physical Chemistry of Foods, Department of Agrotechnology and Food Sciences, Wageningen University, Wageningen, The Netherlands

Ruud den Adel

Unilever Research and Development Vlaardingen, Vlaardingen, The Netherlands

Paul Venema

Laboratory of Physics and Physical Chemistry of Foods, Department of Agrotechnology and Food Sciences, Wageningen University, Wageningen, The Netherlands

Arjen Bot

Unilever Research and Development Vlaardingen, Vlaardingen, The Netherlands

Eckhard Flöter

Unilever Research and Development Vlaardingen, Vlaardingen, The Netherlands

Erik van der Linden

Laboratory of Physics and Physical Chemistry of Foods, Department of Agrotechnology and Food Sciences, Wageningen University, Wageningen, The Netherlands

Preferred Abstract (Original):

Mixtures of γ-oryzanol and β-sitosterol were used to structure different oils (decane, limonene, sunflower oil, castor oil, and eugenol). The γ-oryzanol and β-sitosterol mixtures self-assemble into double-walled hollow tubules (∼10 nm in diameter) in the oil phase, which aggregate to form a network resulting in firm organogels. The self-assembly of the sterol molecules into tubules was studied using light scattering and rheology. By using different oils, the influence of the polarity of the oil on the self-assembly was studied. The effects of temperature and structurant concentration on the tubuler formation process were determined and the thermodynamic theory of self-assembly was applied to calculate the change in Gibbs free energy (ΔG0), enthalpy (ΔH0), and entropy (ΔS0) resulting from the aggregation of the structurants was determined. The self-assembly was found to be enthalpy-driven as characterized by a negative ΔH0 and ΔS0. A decreasing polarity of the oil promotes the self-assembly leading to formation of tubules at higher temperatures and lower structurant concentrations.