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| 1 | Analysis of Multi-Dimensional Space-Filling Curves显示文摘 | Mohamed F. Mokbel Walid G. Aref Ibrahim Kamel | 2003 | GeoInformatica2003，，3： | 1 |
| 2 | Estimation of the Shape and Scale Pa- rameters of Pareto Distribution Using Ranked Set Sampling显示文摘 | WALID ABU-DAYYEH AISSA ASSRHANI KAMARUL ZAMAN IBRAHIM | 2013 | Statistical Papers2013，54，1： | 1 |
| 3 | Ordering and parameterizing scattered 3D data for B-spline surface approximation显示文摘 | Cohen Fernand S Ibrahim Walid Pintavirooj Chuchart | 2000 | IEEE Transactions on Pattern Analysis and Machine Intelligence2000，22，6： | 1 |
| 4 | Multimedia digital signal processing laboratory显示文摘 | Fernand S Cohen Athina Petropulu Georgia Georgiou Walid Ibrahim | 2000 | Computer Applications in Engineering Education2000，8，34： | 1 |
| 5 | Status of Liver Transplantation in the Arab World显示文摘 | Hatem Khalaf Ibrahim Marwan Mohammed Al-Sebayel Mahmoud El-Meteini Adel Hosny Mohamed Abdel-Wahab Khaled Amer Mohamed El-Shobari Refaat Kamel Mohammed Al-Qahtani Iftikhar Khan Abdulla Bashir Saeb Hammoudi Sameer Smadi Mohamad Khalife Walid Faraj Kamel Ben | 2014 | Transplantation2014，，7： | 1 |
| 6 | Analysis of Multi-Dimensional Space-Filling Curves显示文摘 | Mohamed F. Mokbel Walid G. Aref Ibrahim Kamel | 2003 | GeoInformatica2003，，3： | 1 |
| 7 | Fludarabine-Based Conditioning Chemotherapy for Allogeneic Hematopoietic Stem Cell Transplantation in Acquired Severe Aplastic Anemia显示文摘 | Hazzaa Al-Zahrani Amr Nassar Fahad Al-Mohareb Fahad Al-Sharif Said Mohamed Khalid Al-Anazi Moosa Patel Walid Rasheed Abu Jafar Mohammed Saleh Mahmoud Bakr Shad Ahmed Khalid Ibrahim Fazal Hussain Naser Elkum Tusneem Elhassan Zubeir Nurgat Naeem Chaudhri Ma | 2011 | Biology of Blood and Marrow Transplantation2011，，5： | 1 |
| 8 | Multimedia digital signal processing laboratory显示文摘 | Fernand S Cohen Athina Petropulu Georgia Georgiou Walid Ibrahim | 2000 | Computer Applications in Engineering Education2000，8，34： | 1 |
| 9 | Inhaled Foreign Bodies: Presentation, Management and Value of History and Plain Chest Radiography in Delayed Presentation显示文摘 | Sameh Ibrahim Sersar Walid Hassan Rizk Maha Bilal Mohammed M. El Diasty Tarik Abudlla Eltantawy Bahaa Badry Abdelhakam Adel Mohamed F. Elgamal Alaa Ali Abou Bieh | 2006 | Otolaryngology - Head and Neck Surgery2006，，1： | 1 |
| 10 | Proposed Different Signal Processing Tools for Efficient Optical Wireless Communications显示文摘Optical Wireless Communication(OWC)is a new trend in communication systems to achieve large bandwidth,high bit rate,high security,fast deployment,and low cost.The basic idea of the OWC is to transmit data on unguided media with light.This system requires multi-carrier modulation such as Orthogonal Frequency Division Multiplexing(OFDM).This paper studies optical OFDM performance based on Intensity Modulation with Direct Detection(IM/DD)system.This system requires a non-negativity constraint.The paper presents a framework for wireless optical OFDM system that comprises(IM/DD)with different forms,Direct Current biased Optical OFDM(DCO-OFDM),Asymmetrically Clipped Optical OFDM(ACO-OFDM),Asymmetrically DC-biased Optical OFDM(ADO-OFDM),and Flip-OFDM.It also considers channel coding as a tool for error control,channel equalization for reducing deterioration due to channel effects,and investigation of the turbulence effects.The evaluation results of the proposed framework reveal enhancement of performance.The performance of the IM/DD-OFDM system is investigated over different channel models such as AWGN,log-normal turbulence channel model,and ceiling bounce channel model.The simulation results show that the BER performance of the IM/DD-OFDM communication system is enhanced while the fading strength is decreased.The results reveal also that Hamming codes,BCH codes,and convolutional codes achieve better BER performance.Also,two algorithms of channel estimation and equalization are considered and compared.These algorithms include the Least Squares(LS)and the Minimum Mean Square Error(MMSE).The simulation results show that the MMSE algorithm gives better BER performance than the LS algorithm. | Hend Ibrahim Abeer D.Algarni Mahmoud Abdalla Walid El-Shafai Fathi E.Abd El-Samie Naglaa F.Soliman | 2022 | Computers, Materials & Continua2022，，5： | 0 |
| 11 | Hepatobiliary manifestations following two-stages elective laparoscopic restorative proctocolectomy for patients with ulcerative colitis:A prospective observational study显示文摘BACKGROUND Hepatobiliary manifestations occur in ulcerative colitis(UC)patients.The effect of laparoscopic restorative proctocolectomy(LRP)with ileal pouch anal anastomosis(IPAA)on hepatobiliary manifestations is debated.AIM To evaluate hepatobiliary changes after two-stages elective laparoscopic restorative proctocolectomy for patients with UC.METHODS Between June 2013 and June 2018,167 patients with hepatobiliary symptoms underwent two-stage elective LRP for UC in a prospective observational study.Patients with UC and having at least one hepatobiliary manifestation who underwent LRP with IPAA were included in the study.The patients were followed up for four years to assess the outcomes of hepatobiliary manifestations.RESULTS The patients'mean age was 36±8 years,and males predominated(67.1%).The most common hepatobiliary diagnostic method was liver biopsy(85.6%),followed by Magnetic resonance cholangiopancreatography(63.5%),Antineutrophil cytoplasmic antibodies(62.5%),abdominal ultrasonography(35.9%),and Endoscopic retrograde cholangiopancreatography(6%).The most common hepatobiliary symptom was Primary sclerosing cholangitis(PSC)(62.3%),followed by fatty liver(16.8%)and gallbladder stone(10.2%).66.4%of patients showed a stable course after surgery.Progressive or regressive courses occurred in 16.8%of each.Mortality was 6%,and recurrence or progression of symptoms required surgery for 15%.Most PSC patients(87.5%)had a stable course,and only 12.5%became worse.Two-thirds(64.3%)of fatty liver patients showed a regressive course,while one-third(35.7%)showed a stable course.Survival rates were 98.8%,97%,95.8%,and 94%at 12 mo,24 mo,36 mo,and at the end of the follow-up.CONCLUSION In patients with UC who had LRP,there is a positive impact on hepatobiliary disease.It caused an improvement in PSC and fatty liver disease.The most prevalent unchanged course was PSC,while the most common improvement was fatty liver disease. | Tamer A A M Habeeb Abdulzahra Hussain Mauro Podda Pasquale Cianci Bruce Ramshaw Khaled Safwat Wesam M Amr Tamer Wasefy Alaa A Fiad Mohamed Ibrahim Mansour Adel Mahmoud Moursi GamalOsman Anass Qasem Mohamed Fawzy Mohamed Ibrahim Abo Alsaad Abd-Elfattah Kalmoush MohammedShaaban Nassar Fawzy M Mustafa Mahmoud Hassib Morsi Badawy Ahmed Hamdy Hamdi Elbelkasi Bassam Mousa Abd-Elrahman M Metwalli Walid A Mawla Mostafa M Elaidy Muhammad Ali Baghdadi Ahmed Raafat | 2023 | World Journal of Gastrointestinal Surgery2023，15，2： | 0 |
| 12 | Automated classification technique for edge-on galaxies based on mathematical treatment of brightness data显示文摘Classification of edge-on galaxies is important to astronomical studies due to our Milky Way galaxy being an edge-on galaxy.Edge-on galaxies pose a problem to classification due to their less overall brightness levels and smaller numbers of pixels.In the current work,a novel technique for the classification of edge-on galaxies has been developed.This technique is based on the mathematical treatment of galaxy brightness data from their images.A special treatment for galaxies’brightness data is developed to enhance faint galaxies and eliminate adverse effects of high brightness backgrounds as well as adverse effects of background bright stars.A novel slimness weighting factor is developed to classify edge-on galaxies based on their slimness.The technique has the capacity to be optimized for different catalogs with different brightness levels.In the current work,the developed technique is optimized for the EFIGI catalog and is trained using a set of 1800 galaxies from this catalog.Upon classification of the full set of 4458 galaxies from the EFIGI catalog,an accuracy of 97.5% has been achieved,with an average processing time of about 0.26 seconds per galaxy on an average laptop. | Mohamed Eassa Ibrahim Mohamed Selim Walid Dabour Passent Elkafrawy | 2021 | Research in Astronomy and Astrophysics2021，21，10： | 0 |
| 13 | Securing Healthcare Data in IoMT Network Using Enhanced Chaos Based Substitution and Diffusion显示文摘Patient privacy and data protection have been crucial concerns in Ehealthcare systems for many years.In modern-day applications,patient data usually holds clinical imagery,records,and other medical details.Lately,the Internet of Medical Things(IoMT),equipped with cloud computing,has come out to be a beneficial paradigm in the healthcare field.However,the openness of networks and systems leads to security threats and illegal access.Therefore,reliable,fast,and robust security methods need to be developed to ensure the safe exchange of healthcare data generated from various image sensing and other IoMT-driven devices in the IoMT network.This paper presents an image protection scheme for healthcare applications to protect patients’medical image data exchanged in IoMT networks.The proposed security scheme depends on an enhanced 2D discrete chaotic map and allows dynamic substitution based on an optimized highly-nonlinear S-box and diffusion to gain an excellent security performance.The optimized S-box has an excellent nonlinearity score of 112.The new image protection scheme is efficient enough to exhibit correlation values less than 0.0022,entropy values higher than 7.999,and NPCR values around 99.6%.To reveal the efficacy of the scheme,several comparison studies are presented.These comparison studies reveal that the novel protection scheme is robust,efficient,and capable of securing healthcare imagery in IoMT systems. | Musheer Ahmad Reem Ibrahim Alkanhel Naglaa FSoliman Abeer D.Algarni Fathi E.Abd El-Samie Walid El-Shafai | 2023 | Computer Systems Science & Engineering2023，47，11： | 0 |
| 14 | Improved RC6 Block Cipher Based on Data Dependent Rotations显示文摘This paper introduces an Improved RC6(IRC6)cipher for data encryption based on data-dependent rotations.The proposed scheme is designed with the potential of meeting the needs of the Advanced Encryption Standard(AES).Four parameters are used to characterize the proposed scheme.These parameters are the size of the word(w)in bits,the number of rounds(r),the length of the secret key(b)in bytes,and the size of the block(L)in bits.The main feature of IRC6 is the variable number of working registers instead of just four registers as in RC6,resulting in a variable block size for plaintext and ciphertext.The IRC6 cipher is designed to improve the robustness against attacks by increasing the diffusion for each round and providing greater security with fewer rounds.The effectiveness of the proposed IRC6 scheme is verified against theoretical attacks.The proposed IRC6 scheme depends on full diffusion and confusion mechanisms regardless of the utilized block size.The proposed IRC6 scheme saves 70%of the encryption time and 64%of the decryption time of RC6.The simulation results prove that the IRC6 achieves a better encryption/decryption time compared to the traditionalRC6.Therefore,the proposed IRC6 is anticipated to fulfill the market needs and system security requirements. | Osama S.Faragallah Ibrahim F.Elashry Ahmed AlGhamdi Walid El-Shafai S.El-Rabaie Fathi E.Abd El-Samie Hala S.El-sayed Mohamed A.Elaskily | 2022 | Computers, Materials & Continua2022，，1： | 0 |
| 15 | Comparison of QT Correction Methods in the Pediatric Population of a Community Hospital: A Retrospective Study显示文摘Objective:Accurate measurement of QT interval,the ventricular action potential from depolarization to repolarization,is important for the early detection of Long QT syndrome.The most effective QT correction(QTc)formula has yet to be determined in the pediatric population,although it has intrinsically greater extremes in heart rate(HR)and is more susceptible to errors in measurement.The authors of this study compare six dif-ferent QTc methods(Bazett,Fridericia,Framingham,Hodges,Rautaharju,and a computer algorithm utilizing the Bazett formula)for consistency against variations in HR and RR interval.Methods:Descriptive Retrospective Study.We included participants from a pediatric cardiology practice of a community hospital who had an ECG performed in 2017.All participants were healthy patients with no past medical history and no regular med-ications.Results:ECGs from 95 participants from one month to 21 years of age(mean 9.7 years)were included with a mean HR of 91 beats per minute(bpm).The two-sample paired t-test or Wilcoxon signed-rank test assessed for any difference between QTc methods.A statistically significant difference was observed between every combination of two QTc formulae.The Spearman’s rank correlation analysis explored the QTc/HR and QTc/RR relationships for each formula.Fridericia method was most independent of HR and RR with the lowest absolute value of correlation coefficients.Bazett and Computer had moderate correlations,while Framingham and Rautaharju exhibited strong correlations.Correlations were positive for Bazett and Computer,reflecting results from prior studies demonstrating an over-correction of Bazett at higher HRs.In the linear QTc/HR regression analysis,Bazett had the slope closest to zero,although Computer,Hodges,and Fridericia had comparable values.Alternatively,Fridericia had the linear QTc/RR regression coefficient closest to zero.The Bland-Altman method assessed for bias and the limits of agreement between correction formulae.Bazett and Computer exhibited good agreement with minimal bias along with Framingham and Rautaharju.To account for a possible skewed distri-bution of QT,all the above analyses were also performed excluding the top and bottom 2%of data as sorted by heart rate ranges(N=90).Results from this data set were consistent with those derived from all participants(N=95).Conclusions:Overall,the Fridericia correction method provided the best rate correction in our pedia-tric study cohort. | Koren Hyogene Kwag Ibrahim Kak Ying Li Walid Khass Alec McKechnie Oksana Nulman Brande Brown Manoj Chhabra | 2024 | Congenital Heart Disease2024，19，1： | 0 |
| 16 | Efficient Hardware Design of a Secure Cancellable Biometric Cryptosystem显示文摘Biometric security is a growing trend,as it supports the authentication of persons using confidential biometric data.Most of the transmitted data in multi-media systems are susceptible to attacks,which affect the security of these sys-tems.Biometric systems provide sufficient protection and privacy for users.The recently-introduced cancellable biometric recognition systems have not been investigated in the presence of different types of attacks.In addition,they have not been studied on different and large biometric datasets.Another point that deserves consideration is the hardware implementation of cancellable biometric recognition systems.This paper presents a suggested hybrid cancellable biometric recognition system based on a 3D chaotic cryptosystem.The rationale behind the utilization of the 3D chaotic cryptosystem is to guarantee strong encryption of biometric templates,and hence enhance the security and privacy of users.The suggested cryptosystem adds significant permutation and diffusion to the encrypted biometric templates.We introduce some sort of attack analysis in this paper to prove the robustness of the proposed cryptosystem against attacks.In addition,a Field Programmable Gate Array(FPGA)implementation of the pro-posed system is introduced.The obtained results with the proposed cryptosystem are compared with those of the traditional encryption schemes,such as Double Random Phase Encoding(DRPE)to reveal superiority,and hence high recogni-tion performance of the proposed cancellable biometric recognition system.The obtained results prove that the proposed cryptosystem enhances the security and leads to better efficiency of the cancellable biometric recognition system in the presence of different types of attacks. | Lamiaa A.Abou Elazm Walid El-Shafai Sameh Ibrahim Mohamed G.Egila H.Shawkey Mohamed K.H.Elsaid Naglaa F.Soliman Hussah Nasser AlEisa Fathi E.Abd El-Samie | 2023 | Intelligent Automation & Soft Computing2023，，4： | 0 |
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