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2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)最新文献

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On-stack replacement to improve JIT-based obfuscation a preliminary study 栈上替换改进基于jit的混淆的初步研究
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-17 DOI: 10.1109/JEC-ECC.2013.6766392
Marwa Yusuf, A. El-Mahdy, Erven Rohou
{"title":"On-stack replacement to improve JIT-based obfuscation a preliminary study","authors":"Marwa Yusuf, A. El-Mahdy, Erven Rohou","doi":"10.1109/JEC-ECC.2013.6766392","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766392","url":null,"abstract":"As more devices are connecting together, more effective security techniques are needed to protect running software from hackers. One possible security technique is to continuously change the binary code running of given software by recompiling it on the fly. This switching need to be done frequently, quickly, and randomly, not constrained by specific locations in code, to make it difficult for the hacker to track the behavior of the running code or predict its functionality. In our research we are working on a technique that recompiles speculatively and concurrently with current execution, and switches to the new compiled version dynamically, at arbitrary points. This paper presents an early analytical study augmented by experimental analysis on manually applying this technique on simple kernels, to study the concept in comparison with other similar techniques.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121475791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Developing the pulse width modulation tool (PWMT) for two timer mechanism technique in microcontrollers 开发了微控制器双定时器技术的脉宽调制工具(PWMT)
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-01 DOI: 10.1109/JEC-ECC.2013.6766403
Mokhtar A. A. Mohamed, A. Elmahalawy, H. Harb
{"title":"Developing the pulse width modulation tool (PWMT) for two timer mechanism technique in microcontrollers","authors":"Mokhtar A. A. Mohamed, A. Elmahalawy, H. Harb","doi":"10.1109/JEC-ECC.2013.6766403","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766403","url":null,"abstract":"Pulse Width Modulation (PWM) plays an important and critical role in many applications and researches as motion control applications and conversion and conserving power energy. There are a wide variety of techniques to generate PWM signals. One of them is microcontroller-based PWM signal as used in PIC microcontroller. PIC-based embedded system developers can invoke a function called “PWM_Init” to program PIC microcontroller to produce PWM signal with a predefined fixed frequency. There are number of obstacles for using this method as: there is no chance to alter the frequency during execution time of the application. Also, there is limited number of PWM channels of PIC. Two-Timer Mechanism (TTM) is proposed to solve these problems. This paper presents a mathematical model and open source computer-based program called Pulse Width Modulation Tool. It is used for deciding the best prescalar value and best initial count value for two PIC timers that are used with TTM technique.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126190545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Link-level simulation for far field UHF RFID with off-line channel coding 带离线信道编码的远场超高频RFID链路级仿真
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-01 DOI: 10.1109/JEC-ECC.2013.6766376
Amr M. Younes, K. Hassan, K. ElMahgoub
{"title":"Link-level simulation for far field UHF RFID with off-line channel coding","authors":"Amr M. Younes, K. Hassan, K. ElMahgoub","doi":"10.1109/JEC-ECC.2013.6766376","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766376","url":null,"abstract":"In this paper, we develop a link-level simulation for a complete radio frequency identification system (RFID). The system is supposed to work at a maximum theoretically distance of 18 m.We simulate two line-coding technique highly used in RFID: FM0 and Miller (MMS) coding. These two codes are implemented to encode the transmitted messages at the tag. Additionally, we save the data at the tag as pre-encoded bits using convolutional channel encoder with different code-rates, e.g., 1/2 and 1/3. Intuitively, our results using FM0 and MMS at the tag show that when M increases (for MMS), the detection improves; however, the data rate decreases. Moreover, the results for channel precoded cases promise for a larger Reader-Tag separation reaching 18 m. Even for extreme environments, assuming Rayleigh Fading channel, the frame-error ratio is promising.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129623780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Preprocessing of color retinal fundus images 彩色视网膜眼底图像的预处理
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-01 DOI: 10.1109/JEC-ECC.2013.6766410
Fatma A. Hashim, N. Salem, A. Seddik
{"title":"Preprocessing of color retinal fundus images","authors":"Fatma A. Hashim, N. Salem, A. Seddik","doi":"10.1109/JEC-ECC.2013.6766410","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766410","url":null,"abstract":"Preprocessing is a primary step in many systems for retinal image segmentation and analysis. It improves segmentation and localization of anatomical structures of the image. In this paper, a new automatic method for preprocessing of digital color fundus images is proposed. First, a binary mask is generated using Gaussian filter to define the region of interest. Then intensity information is extracted from both red and green channels to obtain a modified intensity channel component. The performance of the proposed method has been evaluated using 241 images from three publicly available datasets. Experimental results show a visual enhancement of the retinal images with emphasis on the optic disc boundary.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121488352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
CRLH ZOR metametrial, design, simulation and fabrication CRLH ZOR元晶，设计，模拟和制造
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-01 DOI: 10.1109/JEC-ECC.2013.6766388
M. Mansour, Mostafa El-Mala, A. Shalaby, E. M. El-Rabaie, N. Messiha
{"title":"CRLH ZOR metametrial, design, simulation and fabrication","authors":"M. Mansour, Mostafa El-Mala, A. Shalaby, E. M. El-Rabaie, N. Messiha","doi":"10.1109/JEC-ECC.2013.6766388","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766388","url":null,"abstract":"In this article, a survey about ZOR is illustrated and its characteristics are investigated in a detailed manner. The fabrication process has been presented to focus on the practical limitations of metamaterials. An application based on ZOR like a notch filter is presented. The notch filter is used in UWB applications. Later, a tunable mechanism based on the nonlinear dielectric of ferroelectric has been proposed. The model is only simulated due to technology limitations. All different configurations were designed with both HFSS and CST, what resolve the electromagnetic fields in all the structure that is going to be analyzed.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134140345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Compact size microstrip coupled resonator band pass filter loaded with lumped capacitors 紧凑尺寸微带耦合谐振器带通滤波器负载集总电容器
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-01 DOI: 10.1109/JEC-ECC.2013.6766386
A. Ibrahim, A. Abdel-Rahman, M. Abdalla, H. Hamed
{"title":"Compact size microstrip coupled resonator band pass filter loaded with lumped capacitors","authors":"A. Ibrahim, A. Abdel-Rahman, M. Abdalla, H. Hamed","doi":"10.1109/JEC-ECC.2013.6766386","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766386","url":null,"abstract":"A compact band pass filter based on microstrip coupled resonator is presented. The proposed structure consists of two microstrip open- loop resonators with electrical coupling. The reduction of the size of the proposed bandpass filter is achieved by combining the microstrip resonator with the lumped capacitors. The insertion of lumped capacitors within resonator was designed at maximum electric field.The insertion of lumped capacitors within resonator increases the effective capacitance and reduces the resonant frequency, so the dimensions of the filter will reduce and the performance of the filter will improve by enhancing the energy stored in the resonator. The design represents size reduction of more than 30 % compared to conventional filter without lumped capacitors. The filter has the characteristics of compact structure and low insertion loss. A second order band pass filter has been designed with rejection higher than 20dB and insertion loss lower than 0.7dB has been achieved within pass band.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132728103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Blind separation of noisy images using finite Ridgelet Transform and wavelet de-noising 利用有限脊波变换和小波去噪对噪声图像进行盲分离
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-01 DOI: 10.1109/JEC-ECC.2013.6766408
M. Y. Abbass, S. A. Shehata, S. S. Haggag, S. Diab, B. M. Salam, S. El-Rabaie, F. El-Samie
{"title":"Blind separation of noisy images using finite Ridgelet Transform and wavelet de-noising","authors":"M. Y. Abbass, S. A. Shehata, S. S. Haggag, S. Diab, B. M. Salam, S. El-Rabaie, F. El-Samie","doi":"10.1109/JEC-ECC.2013.6766408","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766408","url":null,"abstract":"This paper deals with the problem of blind separation of digital images from noisy mixtures. It proposes the application of a blind separation algorithm on Ridgelet Transform (RT) of the mixed images, instead of performing the separation on the mixtures in the time domain. Soft Wavelet thresholding denoising of the noisy mixtures is recommended in this paper as a preprocessing step for noise reduction. Ridgelet transform is a new directional multi-resolution transform and is more suitable for describing the signals with high dimensional singularities. Finite Ridgelet Transform (FRIT) is a discrete version of ridgelet transform, which is a numerical precision as the continuous ridgelet transform and has low computational complexity. Comparing with time domain, ridgelets find more application on image separation, hence it represents smooth and edge parts of image with sparsity. In addition, the representation of ridgelets contains more directional information. The mixtures images are extracted using ICA which is based on blind source separation technique. The simulation results reveal that the performance of ridgelet transform is better when compared to time domain in digital images separation. The Peak Signal-to-Noise Ratio (PSNR), Signal-to-Noise Ratio (SNR), Root Mean Square Error (RMSE) and Segmental Signal-to-Noise Ratio (SNRseg) are used to evaluate the quality of the separated images.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127798828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Performance enhancement of QPSK modulation using hybrid QPSK-modified MPPM in optical fiber communications 光纤通信中使用混合QPSK修饰的MPPM提高QPSK调制性能
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-01 DOI: 10.1109/JEC-ECC.2013.6766401
H. Selmy, H. Shalaby, Z. Kawasaki
{"title":"Performance enhancement of QPSK modulation using hybrid QPSK-modified MPPM in optical fiber communications","authors":"H. Selmy, H. Shalaby, Z. Kawasaki","doi":"10.1109/JEC-ECC.2013.6766401","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766401","url":null,"abstract":"A hybrid quadrature phase shift keying-modified multi-pulse pulse-position modulation scheme is proposed as a new modulation technique to improve the performance of conventional quadrature phase shift keying (QPSK) modulation in optical fiber communication systems.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117108835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A modified bit-plane based method for lung region extraction from 3D chest CT images 一种改进的基于位平面的三维胸部CT图像肺区提取方法
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-01 DOI: 10.1109/JEC-ECC.2013.6766381
R. Sammouda, Hassan Ben Mathkour, A. Touir
{"title":"A modified bit-plane based method for lung region extraction from 3D chest CT images","authors":"R. Sammouda, Hassan Ben Mathkour, A. Touir","doi":"10.1109/JEC-ECC.2013.6766381","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766381","url":null,"abstract":"In this paper, we present an enhancement on bit-planes based method in the phase of extracting lung region from 3D chest images which is considered a key challenge in computer aided diagnosis systems designed for early detection of lung cancer. The chest 3D-CT images are used without any preprocessing in order to keep the entire information intact within the raw data. The results show that Bit-plane1 and Bit-plane2 can be considered together as needed and sufficient information to the extraction process of lung region even if other small objects having common pixels with lung walls remain within the extracted objects. Our method is implemented and tested on a database of normal cases composed of more than 1000 CT intensity images, and has successfully extracted lung regions in almost all of the cases.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122461452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A comparative study of different multi-spectral images compression methods 不同多光谱图像压缩方法的比较研究
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC) Pub Date : 2013-12-01 DOI: 10.1109/JEC-ECC.2013.6766409
S. R. Falila, Sayed El-Rabaie, Salah M. Diab, AlaaM. Abbas, A. Tobal, R. Hamzawi, F. A. El-Samie
{"title":"A comparative study of different multi-spectral images compression methods","authors":"S. R. Falila, Sayed El-Rabaie, Salah M. Diab, AlaaM. Abbas, A. Tobal, R. Hamzawi, F. A. El-Samie","doi":"10.1109/JEC-ECC.2013.6766409","DOIUrl":"https://doi.org/10.1109/JEC-ECC.2013.6766409","url":null,"abstract":"In this paper a comparative study between different traditional techniques of multispectral image compression such as JPEG(which depends on discrete cosine transform (DCT)), JPEG2000 (which depends on discrete wavelet transform(DWT)), SPIHT and a proposed technique which depends on making modifications on SPIHT algorithm is presented. In The modified SPIHT algorithm the value of the current pixel in the current band is predicted by the best JPEG predictor on the previously encoded band after that, the difference between the actual value and the predicted value is encoded by a SPHIT algorithm. Experimental results show that the modified SPIHT algorithm has better performance in PSNR than JPEG, JPEG2000, and SPIHT for multispectral image compression and transmission over OFDM communication system.","PeriodicalId":379820,"journal":{"name":"2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers (JEC-ECC)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124043173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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