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A Triple-Channel Encrypted Hybrid Fusion Technique to Improve Security of Medical Images

Computers, Materials & Continua 2021年第7期68卷 431-446页

作者： ahmed S.Salama Mohamed Amr Mokhtar Mazhar B.Tayel Esraa Eldesouky ahmed ali Future University in Egypt CairoEgypt Cairo Higher Institute for Engineering Computer Science and ManagementCairoEgypt Department of Electrical Engineering Faculty of EngineeringAlexandria UniversityAlexandria21544Egypt Department of Computer Science Faculty of Computers and InformaticsSuez Canal UniversityIsmailia CityEgypt Higher Future Institute for Specialized Technological Studies CairoEgypt Department of Computer Science College of Computer Engineering and SciencesPrince Sattam Bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia

Assuring medical images protection and robustness is a compulsory necessity *** this paper,a novel technique is proposed that fuses the wavelet-induced multi-resolution decomposition of the Discrete Wavelet Transform(DWT)with the energy compaction of the Discrete Wavelet Transform(DCT).The multi-level Encryption-based Hybrid Fusion Technique(EbhFT)aims to achieve great advances in terms of imperceptibility and security of medical images.A DWT disintegrated sub-band of a cover image is reformed simultaneously using the DCT ***,a 64-bit hex key is employed to encrypt the host image as well as participate in the second key creation process to encode the ***,a PN-sequence key is formed along with a supplementary key in the third layer of the ***,the watermarked image is generated by enclosing both keys into DWT and DCT *** fusions ability of the proposed EbHFT technique makes the best use of the distinct privileges of using both DWT and DCT *** order to validate the proposed technique,a standard dataset of medical images is *** results show higher performance of the visual quality(i.e.,57.65)for the watermarked forms of all types of medical *** addition,EbHFT robustness outperforms an existing scheme tested for the same dataset in terms of Normalized Correlation(NC).Finally,extra protection for digital images from against illegal replicating and unapproved tampering using the proposed technique.

关键词： Medical image processing digital image watermarking discrete wavelet transforms discrete cosine transform encryption image fusion hybrid fusion technique

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National guidelines for the diagnosis and treatment of hilar cholangiocarcinoma

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World Journal of Gastroenterology 2024年第9期30卷 1018-1042页

作者： Faisal Saud Dar Zaigham Abbas Irfan ahmed Muhammad Atique Usman Iqbal Aujla Muhammad Azeemuddin Zeba Aziz Abu Bakar Hafeez Bhatti Tariq ali Bangash Amna Subhan Butt Osama Tariq Butt Abdul Wahab Dogar Javed Iqbal Farooqi Faisal Hanif Jahanzaib Haider Siraj Haider Syed Mujahid Hassan Adnan Abdul Jabbar Aman Nawaz Khan Muhammad Shoaib Khan Muhammad Yasir Khan Amer Latif Nasir Hassan Luck Ahmad Karim Malik Kamran Rashid Sohail Rashid Mohammad Salih Abdullah Saeed Amjad Salamat Ghias-un-Nabi Tayyab Aasim Yusuf Haseeb Haider Zia Ammara Naveed Department of Hepatopancreatic Biliary Surgery&Liver Transplant Pakistan Kidney and Liver Institute&Research CentreLahore 54000Pakistan Department of Hepatogastroenterology and Liver Transplantation Dr.Ziauddin University HospitalKarachi 75600SindhPakistan University of Aberdeen Aberdeen B243FXUnited Kingdom Department of Pathology Pakistan Kidney and Liver Institute&Research CentreLahore 54000Pakistan Department of Gastroenterology&Hepatology Pakistan Kidney and Liver Institute&Research CentreLahore 54000Pakistan Department of Radiology Aga Khan UniversityKarachi 74800Pakistan Department of Oncology Hameed Latif HospitalLahore 54000Pakistan Division of Hepatopancreatic Biliary Surgery&Liver Transplantation Shifa International HospitalIslamabad 44000Pakistan Department of Hepatopancreatic Biliary Surgery&Liver Transplant Shaikh Zayed Hospital and Post Graduate Medical InstituteLahore 54000Pakistan Department of Medicine Aga Khan University HospitalKarachi 74800Pakistan Department of Liver Transplant Pir Abdul Qadir Shah Jeelani Institute of Medical SciencesGambat 66020Pakistan Department of Medicine&Gastroenterology Lifecare Hospital and Research CentrePeshawar 25000Khyber PakhtunkhwaPakistan Department of Hepatopancreatobiliary&Liver Transplant Bahria International HospitalLahore 54000Pakistan Department of Surgery Hepatopancreatobiliary&Liver TransplantDow University of Health SciencesKarachi 74800Pakistan Department of Gastroenterology Hepatology&NutritionPir Abdul Qadir Shah Jeelani Institute of Medical SciencesGambat 66020Pakistan Department of Oncology Dr.Ziauddin HospitalKarachi 74800Pakistan Department of Radiology Rehman Medical InstitutePeshawar 25000Pakistan Army Liver Transplant Unit Pak Emirates Military HospitalRawalpindi 46000Pakistan Department of Gastroenterology Sindh Institute of Urology and TransplantationKarachi 75500Pakistan Rashid Nursing Home and Cancer Clinic Rashid Nursing Home and Cancer ClinicRawalpindi 46000Pakistan Department of Gastroentero

A consensus meeting of national experts from all major national hepatobiliary centres in the country was held on May 26,2023,at the Pakistan Kidney and Liver Institute&Research Centre(PKLI&RC)after initial consultations with the *** Pakistan Society for the Study of Liver Diseases(PSSLD)and PKLI&RC jointly organised this *** effort was based on a comprehensive literature review to establish national practice guidelines for hilar cholangiocarcinoma(hCCA).The consensus was that hCCA is a complex disease and requires a multidisciplinary team approach to best manage these *** coordinated effort can minimise delays and give patients a chance for curative treatment and effective *** diagnostic and staging workup includes high-quality computed tomography,magnetic resonance imaging,and magnetic resonance *** cytology or biopsy utilizing endoscopic retrograde cholangiopancreatography is a mainstay for ***,histopathologic confirmation is not always required before *** ultrasound with fine needle aspiration of regional lymph nodes and positron emission tomography scan are valuable adjuncts for *** only curative treatment is the surgical resection of the biliary tree based on the Bismuth-Corlette *** patients with unresectable hCCA can be considered for liver *** chemotherapy should be offered to patients with a high risk of *** use of preoperative biliary drainage and the need for portal vein embolisation should be based on local multidisciplinary *** with acute cholangitis can be drained with endoscopic or percutaneous biliary *** chemotherapy with cisplatin and gemcitabine has shown improved survival in patients with irresectable and recurrent hCCA.

关键词： Hilar cholangiocarcinoma Bismuth-Corlette classification Memorial Sloan Kettering Cancer Centre Staging Preoperative biliary drainage Portal vein embolisation Surgical resection Hepatectomy

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Performance analysis of multi-GNSS static and RTK techniques in estimating height differences

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International Journal of Digital Earth 2020年第5期13卷 586-601页

作者： ahmed Elaksher Tarig ali Franck Kamtchang Christian Wegmann Adalberto Guerrero College of Engineering New Mexico State UniversityLas CrucesNew MexicoUSA Department of Civil Engineering College of EngineeringAmerican University of SharjahSharjahUAE Geomatics Engineering Lassonde School of EngineeringYork UniversityTorontoCanada Surveying Engineering Program College of EngineeringNew Mexico State UniversityLas CrucesNew MexicoUSA

Establishing reliable elevation differences is imperative for most geoscience and engineering *** work has traditionally been accomplished through spirit leveling techniques;however,surveyors have been utilizing satellite positioning systems in measuring height differences for more than a *** the quality of these heights needs to be evaluated in order to adopt them in different *** this article,we present the outcome of an accuracy assessment of height differences obtained with static and RTK *** control points with an average baseline length of 1 km were occupied with dual-frequency GNSS receivers for different time *** signals were processed using open-source software and verified with an online processing *** were estimated by processing the GPS and the GLONASS data individually,and combined(***).Height differences were determined and compared with those measured by spirit levels and corrected through geoid *** results were achieved by combining GPS and GLONASS solutions for both static and RTK *** with either GPS or GLONASS satellites were comparable,but in most cases,the GPS solutions performed *** the static surveys,longer occupation provided much accurate height *** among 10 different RTK surveys were minimum for the GPS+GLONASS solutions and worst for the GLONASS *** ANOVA,LSD,F,and χ^(2) statistical tests confirmed our findings at the 95%confidence level.

关键词： GNSS static RTK multipath height differences

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Natural Propulsion with Lorentz Force and Nanoparticles in a Bioinspired Lopsided Ciliated Channel

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Journal of Bionic Engineering 2017年第1期14卷 172-181页

作者： Noreen Sher Akbar Liaqat ali Khan Zafar Hayat Khan Nazir ahmed Mir DBS&H CEME National University of Sciences and Technology Islamabad Pakistan Basic Science Department Ripha International University Islamabad Pakistan Department of Mathematics University of Malakand Chakdara Dir (Lower) Khyber Pakhtunkhwa Pakistan

The transportation of biological and industrial nanofluids by natural propulsion like cilia movement and self-generated contraction-relaxation of flexible walls has tremendous applications in various fields. Inspired by multidisciplinary invention in this direction, a fuid mechanical model is proposed to study the Magneto-hydrodynamics （MHD） and heat transfer for nanofluids fabricated by the dispersion of nanoparticles in water as base fluid. The steady flow is induced by metachronal wave propulsion due to beating cilia. The flow regime is asymmetric channel. The flow is restricted under the low Reynolds number and long wavelength approximations. Cilia boundary conditions for velocity components are employed to find the exact solutions. The impacts of pertinent physical parameters on temperature profile, velocity profile, pressure, and stream lines are computed numerically. It is observed that velocity is inversely proportional to magnetic Reynolds number, Reynolds number, Strommer＇s number and velocity is directly proportional to flow rate. It is analyzed that temperature is inversely proportional to Strommer＇s number and magnetic Reynolds number and directly proportional to Brinkmann number and flow rate. The temperature is maximum at the center of the channel and it starts decreasing towards the boundary walls.

关键词： copper water nanoparticles induced magnetic field asymmetric ciliated channel

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Association of Allergic Symptoms with Dengue Infection and Severity:A Systematic Review and Meta-analysis

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Virologica Sinica 2020年第1期35卷 83-92页

作者： Nguyen Dang Kien Amr Ehab El-Qushayri ali mahmoud ahmed Adnan Safi Sarah Abdel Mageed Samar Muhammed Mehyar Mohammad Rashidul Hashan Sedighe Karimzadeh Kenji Hirayama Nguyen Tien Huy Department of Obstetrics and Gynecology Thai Binh University of Medicine and PharmacyThai Binh 410000Vietnam Online Research Club(http://***/) NagasakiJapan Faculty of Medicine Minia UniversityMinia 61519Egypt Faculty of Medicine Al-Azhar UniversityCairo 11865Egypt Nishtar Medical University Multan 60000Pakistan Faculty of Medicine Tanta UniversityTanta 31511Egypt Istishari Hospital Amman 11953Jordan Infectious Disease Division Respiratory and Enteric Infections DepartmentInternational Center for Diarrheal Disease ResearchDhakaGPO Box 128Dhaka 1000Bangladesh School of Medicine Sabzevar University of Medical SciencesSabzevar ***Iran Department of Immunogenetics Institute of Tropical Medicine(NEKKEN)Leading Graduate School Programand Graduate School of Biomedical SciencesNagasaki University1-12-4 SakamotoNagasaki 852-8523Japan Evidence Based Medicine Research Group Ton Duc Thang UniversityHo Chi Minh City 70000Vietnam Faculty of Applied Sciences Ton Duc Thang UniversityHo Chi Minh City 70000Vietnam

The relationship between the severity of dengue infection and allergy is still obscure. We conducted an electronic search across 12 databases for relevant articles reporting allergic symptoms, dengue infection, and dengue classification. These studies were categorized according to dengue severity and allergy symptoms, and a meta-analysis was performed by pooling the studies in each category. Among the included 57 articles, pruritus was the most common allergic sign followed by non-specified allergy and asthma(28.6%, 13%, and 6.5%, respectively). Despite the reported significant association of dengue with pruritus and total Ig E level(P \ 0.05), in comparison with non-dengue cases and healthy controls, there was no association between the different severe dengue group with pruritus, skin allergy, food allergy or asthma. However,removing the largest study revealed a significant association between asthma with dengue hemorrhagic fever(DHF) rather than dengue fever(DF). In comparison with DF, DHF was associated with Ig E positivity. Furthermore, specific-Ig E level was higher in secondary DF rather than primary DF. There was a possible association between allergy symptoms and dengue severity progression. Further studies are needed to clarify this association.

关键词： Dengue Allergy Severity IgE Asthma Association

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Data Reliability and Sensors Lifetime in Bridge Health Monitoring using LoRaWAN-Zigbee

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Computers, Materials & Continua 2022年第11期73卷 2663-2678页

作者： Awad ali Reyazur Rashid Irshad ahmed Abdu Alattaab Aamir Fatahayab Department of Computer Science College of Science and Arts-SharourahNajran UniversityNajranKingdom of Saudi Arabia Department of Computer Science JJTUJhunjhunuRajasthanIndia

The Wireless Sensor Network(WSN)is regarded as the fastest expanding technological trend in recent years due its application in a variety of *** the monitoring region,several sensor nodes with various sensing capabilities are installed to gather appropriate data and communicate it to the *** proposed system of the heterogeneous WSN employing LoRaWAN-Zigbee based hybrid communication is explored in this research *** communicate in a network,two Long–Range Wide Area Network(LoRaWAN)sensor clusters and two Zigbee sensor clusters are employed,together with two Zigbee and LoRaWAN *** suggested Golden eagle shepherd optimization(GESO)method then forms Zigbee as well as LoRaWAN networking ***,depending on energy usage and data packet size,the fitness of each sensor node is assessed using the Dynamic Intelligent Reasoning Based Neural(DIRN)*** software is used to implement and execute this *** the Zigbee network’s transmission distance is 650 m and the LoRaWAN network’s transmission range is 3.5 km,the system can function with a packet loss rate of less than 0.04 *** study shows significant gains in the performance of the system when compared to traditional approaches based on digital findings obtained on software solutions.

关键词： Zigbee LoRaWAN wireless sensor network health monitoring routing protocol

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Decision Support System for Diagnosis of Irregular Fovea

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Computers, Materials & Continua 2022年第6期71卷 5343-5353页

作者： Ghulam ali Mallah Jamil ahmed Muhammad Irshad Nazeer Mazhar ali Dootio Hidayatullah Shaikh Aadil Jameel Shah Abdul Latif University Khairpur77150Pakistan Sukkur IBA University Sukkur7720Pakistan Shaheed Benazir University Layari Karachi77202Pakistan

Detection of abnormalities in human eye is one of the wellestablished research areas of Machine *** Learning techniques are widely used for the diagnosis of RetinalDiseases(RD).Fovea is one of the significant parts of retina which would be prevented before the involvement of Perforated Blood Vessels(PBV).Retinopathy Images(RI)contains sufficient information to classify structural changes incurred upon PBV but Macular Features(MF)and Fovea Features(FF)are very difficult to detect because features ofMFand FF could be found with Similar Color Movements(SCM)with minor *** paper presents novel method for the diagnosis of Irregular Fovea(IF)to assist the doctors in diagnosis of irregular *** considering all above problems this paper proposes a three-layer decision support system to explore the hindsight knowledge of RI and to solve the classification problem of *** first layer involves data preparation,the second layer builds the decision model to extract the hidden patterns of fundus images by using Deep Belief Neural Network(DBN)and the third layer visualizes the results by using confusion *** paper contributes a data preparation algorithm for irregular fovea and a highest estimated classification accuracy measured about 96.90%.

关键词： Machine learning deep belief neural network eye disease fovea

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Navigating Interoperability in Disaster Management:Insights of Current Trends and Challenges in Saudi Arabia

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International Journal of Disaster Risk Science 2023年第6期14卷 873-885页

作者： Zakaria ahmed Mani Mohammed ali Salem Sultan Virginia Plummer Krzysztof Goniewicz College of Nursing Jazan University45142 JazanSaudi Arabia Healthcare Transformation Model of CareRegional Health Directorate 66255 NajranSaudi Arabia 3 Institute of Health and Care SciencesSahlgrenska AcademyGothenburg University40530 GothenburgSweden Institute of Health and Wellbeing Federation University AustraliaBerwick 3806Australia Department of Security Studies Polish Air Force University08-521 DeblinPoland

In this rapid review,we critically scrutinize the disaster management infrastructure in Saudi Arabia,illuminating pivotal issues of interoperability,global cooperation,established procedures,community readiness,and the integration of cuttingedge *** exploration uncovers a significant convergence with international benchmarks,while pinpointing areas primed for *** recognize that continual commitments to infrastructural progression and technology adoption are ***,we underscore the value of robust community involvement and cross-border collaborations as key factors in bolstering disaster response ***,we spotlight the transformative influence of emerging technologies,such as artificial intelligence and the Internet of Things,in elevating the effectiveness of disaster management *** review champions in all-encompassing approach to disaster management,which entails harnessing innovative technologies,nurturing resilient communities,and promoting comprehensive disaster management strategies,encapsulating planning,preparedness,response,and *** a result of our analysis,we provide actionable recommendations to advance Saudi Arabia's disaster management *** insights are timely and crucial,considering the escalating global focus on disaster response in the face of increasing disaster and humanitarian events.

关键词： Community preparedness Cooperation Disaster management Emergency response Healthcare Interoperability

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Gap acceptance behavior of drivers at uncontrolled T-intersections under mixed traffic conditions

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Journal of Modern Transportation 2018年第2期26卷 119-132页

作者： Manish Dutta Mokaddes ali ahmed National Institute of Technology Silchar Silchar Assam 788010 India

Explicit traffic control measures are absent in uncontrolled intersections which make them susceptible to frequent conflicts and resulting collisions between vehicles. In developing countries like India, drivers at such intersections do not yield to higher priority movements which cause more crashes between vehicles. The objective of this study is to analyze and model the gap acceptance behavior of minor street drivers at uncontrolled T-intersections considering their aggressive nature. Three intersections in the northeast region of India have been selected as the case study area. Preliminary analysis of the data revealed that drivers behave aggressively, not because they have to wait for a long time at the stop line, but because of their lack of respect for traffic rules. Binary logit models are developed for minor road right turning vehicles which show that gap acceptance behavior is influenced by gap duration, clearing time and aggressive nature of drivers. The equations obtained were used to estimate the critical gaps for aggressive and non-aggressive drivers. Critical gaps are also calculated using an existing method called clearing behavior approach. It is also shown that the estimation of critical gap is more realistic if clearing time and aggressive behavior of drivers are considered.

关键词： Mixed traffic acceptance Clearing timemodel Uncontrolled intersection Gap Aggressive behavior Logit

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Does financial development moderate the link between technological innovation and environmental indicators?An advanced panel analysis

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Financial Innovation 2023年第1期9卷 2885-2903页

作者： Hossein ali Fakher Zahoor ahmed Department of Business Management Ayandegan Institute of Higher EducationTonekabonIran Department of Business Admistration Faculty of EconomicsAdministrative and Social SciencesBahçeşehir Cyprus UniversityNicosiaTurkey Department of Economic&Data Sciences New Uzbekistan University54 Mustaqillik Ave.Tashkent 100007Uzbekistan

This study analyzes the role of financial development(FD)on the impact of technologi-cal innovation(TI)on six environmental quality indicators for the 25 economies that are part of the Organization for Economic Cooperation and Development for the period from 2000 to *** use a two-step dynamic generalized method of moments approach to understand this *** results show that FD augments the posi-tive effects of TI on four of the six environmental indicators,namely ecological foot-print,adjusted net savings,pressure on nature,and environmental ***,no significant effects on environmental sustainability and environmental vulnerability indices were *** considering all of the environmental quality indicators,TI appears to enhance environmental *** find evidence to support the existence of the environmental Kuznets curve in the context of each environmen-tal indicator and economic ***,FD and energy consumption appear to accelerate environmental *** on these results,FD should be viewed as an important parameter in designing policies for innovation to achieve the goal of net-zero carbon *** innovation and environmental quality nexus is *** moderating role of financial development is *** different environmental quality indicators are used for OECD *** development intensifies the environmental benefits of innovation.•The EKC hypothesis is confirmed for all six environmental indicators.

关键词： Technological innovation Financial development Two-step dynamic Sys-GMM estimator Environmental quality indicators Environmental sustainability

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