During the recent years, remarkable rise occurs into spreading of wireless networks since it offers flexibility, mobility and popularity due to the increase in mobile phones application users. Despite real time applications consume more bandwidth than others which is a big challenge for network designers. Newer VoIP applications start to use codecs that are used to compress and decompress speech signals in addition to coding and decoding. Codecs need to use high compression ratios for the VoIP implementation to generate maximum value of Quality of Service ( QoS )to be Competitor to other traditional public switching networks. Also, Internet protocol version 6 is becoming more popular than version 4 since shortage of address space and additional features have been added to ipv6. In this paper, Different audio codecs G.711, G.729 and GSM that are widely utilized in VoIPv6 applications were studied and compared. These codecs were tested in WiMAX network through an IPv6 environment to determine their performance efficiency and find out the appropriate codec that suits VoIP transmission by observing various QoS parameters such as jitter, Delay, packet loss rate and Mean Opinion Score (MOS) value that affects the quality of voice transmission. These transmissions had taken place while the nodes were stationary or moving with different speeds. All simulation scenarios are performed with OPNET modeller 14.5.

تم اشتقاق تعبير عن الحيود من المبادئ الأولى عند واجهة موجة إهليلجية.يظهر حيود واجهات الموجات الكروية والمستوية كحالات محددة من نفس الشيء. تبين أن مناطق نصف فترة فريسنل من واجهة الموجة الإهليلجية تعتمد على الإهليلجية لواجهة الموجة.

Mouayed M. Mahmoud (University College, Diyala, Iraq) moaed.mahmood.2020.4040@gmail.com

Nasser Adin Ali. Almaufe (University Of Gharyan faclty of science.) Almaufe1976@gmail.com

Abstract

    The petrophysical analysis plays a significant role in determining the physical properties of reservoir rocks such as volume of shale, porosity and water saturation which in turn are  key factors in identifying the hydrocarbon zone possibilities (net pay). The study was conducted on Belhedan field which located in Sirt Basin. The targeted aria was the Gargaf formation, on which five wells were utilized for the investigation. The logging data studied comprises of gamma ray to determine volume of shale, density log, neutron log, whereas for porosity- and water saturation determination sonic log and resistivity were applied respectively. The results and data derived from the different logs of the current research work were analyzed by using Techlog Software2015 application. Based on the results derived from the software mentioned above the volume of shale for the five wells was calculated to be between (6.8-25.4 %), whereas average porosity was found to be between (8.5- 17%). Finally, water saturation and net pay thickness were computed to be  between (9.6- 49.6%)  and (18.5- 183.5 ft) respectively.

A new robust blind image watermarking method based on lifting wavelet transform (LWT), and Schur decomposition in combination with discrete cosine transform (DCT), and entropy analysis for copyright protection of multimedia information is introduced in this paper. At first, the 2-level LWT is applied to the original image to improve the invisibility of the watermarking method and then the high-frequency sub-band of 2-level LWT is decomposed by DCT. Then, the DCT coefficients are divided into 4×4 non-overlapping blocks. After that, Schur decomposition applies to each selected block, while the first row, the first column element of the upper triangular matrix is used to embed the watermark. For evaluation, the invisibility and robustness of the proposed watermarking method, the peak signal to noise ratio (PSNR), and normalized cross-correlation (NC) are used to measure the quality and the ability of the proposed watermarking method to be robust against signal processing operations and geometric attacks. Experimental results have demonstrated that the proposed method is achieved a very good tradeoff between invisibility and robustness. The comparisons with other scheme have shown that the proposed digital watermarking scheme has a superior performance in terms of invisibility than other. 

Abstract:

In this research study, we investigate the effectiveness of a proposed automated framework that leverages AI algorithms to improve the accuracy, scalability, and efficiency of data analysis. We compare the performance of the proposed framework to traditional data analysis methods in terms of accuracy, time and effort required for data analysis, and scalability. We conducted a questionnaire-based survey to collect data on the application of the proposed framework and traditional data analysis methods in real-world scenarios. We used statistical analyses, including t-tests and regression analyses, to analyze the data and draw conclusions. Our findings indicate that the proposed automated framework outperforms traditional data analysis methods in terms of accuracy, reduces the time and effort required for data analysis, and has better scalability for processing large datasets in real-time. Our results suggest that the proposed framework offers significant benefits for organizations seeking to improve their data analysis processes. However, we also note the importance of considering the costs and benefits of implementing the framework, as well as any ethical or legal implications. Further research is recommended to confirm the findings and to investigate the effectiveness of the proposed framework in different contexts and with different datasets.