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Soft Tissue Chondroma: Two Cases Report and Literature Review

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Case Reports in Clinical Medicine 2014年第12期3卷 644-649页

作者： khadija benhayoune Hinde El Fatemi Hassan El Fettach Siham Tizniti Faouzi Boutayeb Mohammed El Merini Taoufik Harmouch Department of Anatomic Pathology CHU Hassan II of Fez Fez Morocco Department of Radiology CHU Hassan II of Fez Fez Morocco Department of Orthopaedics I CHU Hassan II of Fez Fez Morocco Department of Orthopaedics II CHU Hassan II of Fez Fez Morocco

Introduction: Soft tissue chondroma is a very rare, slow progressing, benign tumor. It has a specific tendency for hands and feet. It can exhibit worrisome radiographic and histologic features mimicking chondrosarcomas. Case 1: A 54-year-old man was presented with a big mass in the left thigh. At magnetic resonance imaging (MRI), the lesion exhibited a heterogeneous pattern, localized in muscle without infiltration. Open biopsy was performed showed a soft tissue chondroma. Case 2: A 40 years old man presented with a hard mass on the right iliac fossa. TDM showed a well circumscribed soft tissue mass with a heterogeneous pattern. Histological assessment of the resected specimen confirmed a soft tissue chondroma. Conclusion: Soft tissue chondroma is a very rare benign tumor. In our case, the tumor presented with an unusual location and radiological appearance, suggesting a malignant process. The diagnosis was rectified thanks to pathological examination.

关键词： Soft Tissue Chondroma Calcification MRI Thigh The Right Iliac Fossa

Scrotal Skin Metastases of Renal Cell Carcinoma: A Case Report

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Case Reports in Clinical Medicine 2015年第3期4卷 93-96页

作者： khadija benhayoune Hinde El Fatemi Jamal El Fassi Soufiane Mellas Hassan Farih Laila Chbani Nawal Hammas Taoufiq Harmouch Laboratory of Surgical Pathology CHU Hassan II Fez Morocco Department of Urology CHU Hassan II Fez Morocco

Cutaneous metastasis from renal cell carcinoma is believed to be rare. We present a 66-year-old man operated for kidney cancer 20 years ago and has consulted for a scrotal lesion that had started 20 days. The physical examination revealed an erythematous lesion. A biopsy of the scrotal skin was made. We found a scrotal metastasis of renal cell carcinoma.

关键词： Scrotal Skin Renal Cell Carcinoma Metastasis 20 Years

A stochastic vaccinated epidemic model incorporating Levy processes with a general awareness-induced incidence

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International Journal of Biomathematics 2021年第6期14卷 189-216页

作者： khadija Akdim Department of Mathematics Faculty of Sciences and Technology Cadi Ayyad UniversityB.P.549Marrakesh C.P.40.000 Morocco

In this paper,we investigate a stochastic vaccinated epidemic model with a general awareness-induced incidence perturbed by Levy ***,we show that this model has a unique global positive ***,we establish the dynamic behavior of the solution around both disease-free and endemic equilibrium ***,when R_(0)>1,we give sufficient conditions for the existence of an ergodic stationary distribution to the model when the jump part in the Levy noise is ***,we present some examples to illustrate the analytical results by numerical simulations.

关键词： Epidemic model vaccination media awareness Levy process.

Second Order Sliding Mode Control for Discrete Decouplable Multivariable Systems via Input-output Models

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International Journal of Automation and computing 2015年第6期12卷 630-638页

作者： Houda Romdhane khadija Dehri Ahmed Said Nouri Numerical Control of Industrial Processes National Engineering School of Gabes University of Gabes

The problem of the chattering phenomenon is still the main drawback of the classical sliding mode control. To resolve this problem, a discrete second order sliding mode control via input-output model is proposed in this paper. The proposed control law is synthesized for decouplable multivariable systems. A robustness analysis of the proposed discrete second order sliding mode control is carried out. Simulation results are presented to illustrate the effectiveness of the proposed strategy.

关键词： Discrete second order sliding mode control decoupl

Deterministic and probabilistic analysis of great-depth braced excavations:A 32 m excavation case study in Paris

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第5期16卷 1505-1521页

作者： Tingting Zhang Julien Baroth Daniel Dias khadija Nejjar Université Grenoble Alpes CNRSGrenoble INP3SRGrenoble38000France Antea Group Antony92160France School of Automotive and Transportation Engineering Hefei University of TechnologyHefei23009China Terrasol 42-52 Quai de la RapéeParis75012France

The Fort d’Issy-Vanves-Clamart(FIVC)braced excavation in France is analyzed to provide insights into the geotechnical serviceability assessment of excavations at great depth within deterministic and probabilistic *** FIVC excavation is excavated at 32 m below the ground surface in Parisian sedimentary basin and a plane-strain finite element analysis is implemented to examine the wall deflections and ground surface settlements.A stochastic finite element method based on the polynomial chaos Kriging metamodel(MSFEM)is then proposed for the probabilistic *** with field measurements and former studies are carried *** academic cases are then conducted to investigate the great-depth excavation stability regarding the maximum horizontal wall deflection and maximum ground surface *** results indicate that the proposed MSFEM is effective for probabilistic analyses and can provide useful insights for the excavation design and construction.A sensitivity analysis for seven considered random parameters is then *** soil friction angle at the excavation bottom layer is the most significant one for *** soil-wall interaction effects on the excavation stability are also given.

关键词： Braced deep excavation Soil-wall interaction Stochastic finite element method Horizontal wall deflection Settlement Failure probability

Automotive Visible-Light Communication: Alternative Devices and Systems

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Tsinghua Science and Technology 2023年第4期28卷 719-728页

作者： Lin Cheng Yue Wu Chenren Xu khadija Ashraf Ashwin Ashok Department of Engineering Trinity CollegeHartfordCT 06106USA Department of Computer Science Yale UniversityNew HavenCT 06520USA Department of Computer Science and Technology Peking UniversityBeijing 100084China Department of Computer Science Georgia State UniversityAtlantaGA 30302USA

Continuous advancements in visible-light communication(VLC)technology have paved the way for future high-capacity communication links that can simultaneously provide data transmission and *** is being accepted as a potential complementary technology in 5G networks,and standardization efforts through IEEE 802.15.7 are on their ***,vehicular networking applications have become increasingly complex with tight power and performance ***,devices and systems that can meet diverse vehicular networking applications are in great *** this article,we discuss three alternatives for vehicular networking applications in(1)LED–photodiode-based active VLC,(2)VLC with a multicamera array receiver,and(3)passive VLC based on decoding information from optical *** also present our recent experimental and modeling work using our camera-based and passive VLC prototype implementations.

关键词： visible-light communications automobile camera communications

Visible light communication for intelligent transportation systems:A review of the latest technologies

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第4期8卷 483-492页

作者： Khaled Shaaban Md Hosne Mobarok Shamim khadija Abdur-Rouf Department of Engineering Utah Valley UniversityOremUT 84058United States Department of Electrical and Computer Engineering McGill UniversityMontréalQC H3A 0E9Canada Department of Civil&Architectural Engineering Qatar UniversityDohaQatar

In seeking to improve traffic congestion and safety on roads and highways,there has been an increased interest in intelligent transportation systems(ITS).The emerging visible light communication(VLC)technology is a new candidate to enable wireless access in *** purpose of this study is to present a comprehensive review of the current studies related to *** VLC facilitates illumination and data communication simultaneously,it reduces energy consumption ***,VLC is immune to electromagnetic interference,provides high data security,and utilizes unregulated visible light spectrum,showing promise as a potentially cheaper alternative to existing radio frequency(RF)based ***,recent advances in semiconductor materials and solid-state technologies have enabled the development of efficient light-emitting diodes(LEDs)and laser diodes(LDs)which are used as transmitters in a VLC *** 10 s of Gbits/s data rate has been demonstrated in indoor VLC links,successful implementation of it in outdoor environments requires further research to overcome the challenges presented by environmental factors,unwanted lights,non-line of sight communication,directional radiation pattern,frequent fragmentation,and so ***,in recent years,semiconductor LDs have been garnering more attention since they can transmit more data over longer distances due to their high quantum efficiency and modulation bandwidth compared to *** a result,urban planners,policy-makers,transportation engineers,and vehicle manufacturers are considering LD-based VLC to facilitate vehicle-to-vehicle and vehicle-to-infrastructure ***,this paper reviews and compares the most recent developments in VLC technologies,identifies their benefits and potential use in ITS applications,discusses the probable barriers for their implementation in our existing transportation infrastructure,and suggests future research directions and recommendations to overcome

关键词： Vehicle-to-vehicle(V2V)communication Vehicle-to-infrastructure(V2I) communication Light-emitting diodes Laser diodes Internet of things Transportation network

Elastic Optimization for Stragglers in Edge Federated Learning

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Big Data Mining and Analytics 2023年第4期6卷 404-420页

作者： khadija Sultana Khandakar Ahmed Bruce Gu Hua Wang Institute for Sustainable Industries and Liveable Cities(ISILC) Victoria UniversityMelbourne 3011Australia Intelligent Technology Innovation Lab(ITIL) Institute for Sustainable Industries and Liveable Cities(ISILC)Victoria UniversityMelbourne 3011Australia. Shandong Computer Science Center(National Supercomputer Center) Jinan 250101China

To fully exploit enormous data generated by intelligent devices in edge computing,edge federated learning(EFL)is envisioned as a promising *** distributed collaborative training in EFL deals with delay and privacy issues compared to traditional centralized model ***,the existence of straggling devices,responding slow to servers,degrades model *** consider data heterogeneity from two aspects:high dimensional data generated at edge devices where the number of features is greater than that of observations and the heterogeneity caused by partial device *** large number of features,computation overhead on the devices increases,causing edge devices to become *** incorporation of partial training results causes gradients to be diverged which further exaggerates when more training is performed to reach local *** this paper,we introduce elastic optimization methods for stragglers due to data heterogeneity in edge federated ***,we define the problem of stragglers in ***,we formulate an optimization problem to be solved at edge *** customize a benchmark algorithm,FedAvg,to obtain a new elastic optimization algorithm(FedEN)which is applied in local training of edge *** mitigates stragglers by having a balance between lasso and ridge penalization thereby generating sparse model updates and enforcing parameters as close as to local *** have evaluated the proposed model on MNIST and CIFAR-10 *** experiments demonstrate that our approach improves run time training performance by achieving average accuracy with less communication *** results confirm the improved performance of our approach over benchmark algorithms.

关键词： edge computing federated learning distributed machine learning regularization stragglers

Valorization of mining waste and tailings through paste backfilling solution, Imiter operation, Morocco

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International Journal of Mining Science and Technology 2016年第3期26卷 511-516页

作者： Khaldoun Abdelhadi Ouadif Latifa Baba khadija Bahi Lahcen Mohammadia Engineering School Mohammed V University

Mine waste and process tailings storage is one of important challenge for which mining operations are increasingly confronted. Treatment discharges of plants and main part of waste rock development are generally stored on surface areas. The volume and chemical characteristics of these materials generate serious problem for required storage spaces and mainly environmental degradation. Paste backfill(PBF) is one of ingenious solutions to minimize the quantity of tailings to store. PBF is basically defined as a combination of mine processing tailings, binder, and water mixing. The purpose of this paper is to present backfilling components characterization and formula verification for a waste valorization solution through paste backfilling technology in Imiter operation. Obtained results and realized analysis demonstrate PBF conformity and adequacy with assigned underground functions. However the studied recipe can be more ameliorated to obtain an optimal mixture ensuring the required mechanical strength.

关键词： Mining waste Process tailings Valorization Paste backfill Uni-axial compressive strength